Annotation of src/usr.bin/ssh/scp.c, Revision 1.33
1.1 deraadt 1: /*
1.27 markus 2: *
1.19 deraadt 3: * scp - secure remote copy. This is basically patched BSD rcp which uses ssh
4: * to do the data transfer (instead of using rcmd).
1.27 markus 5: *
1.19 deraadt 6: * NOTE: This version should NOT be suid root. (This uses ssh to do the transfer
7: * and ssh has the necessary privileges.)
1.27 markus 8: *
1.19 deraadt 9: * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
1.27 markus 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"
1.33 ! provos 48: RCSID("$OpenBSD: scp.c,v 1.32 2000/06/20 01:39:44 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:
1.27 markus 112: int
1.18 markus 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";
1.18 markus 158: if (verbose_mode)
159: args[i++] = "-v";
160: if (compress)
161: args[i++] = "-C";
162: if (batchmode)
163: args[i++] = "-oBatchMode yes";
164: if (cipher != NULL) {
165: args[i++] = "-c";
166: args[i++] = cipher;
167: }
168: if (identity != NULL) {
169: args[i++] = "-i";
170: args[i++] = identity;
171: }
172: if (port != NULL) {
173: args[i++] = "-p";
174: args[i++] = port;
175: }
176: if (remuser != NULL) {
177: args[i++] = "-l";
178: args[i++] = remuser;
179: }
180: args[i++] = host;
181: args[i++] = cmd;
182: args[i++] = NULL;
183:
184: execvp(SSH_PROGRAM, args);
185: perror(SSH_PROGRAM);
186: exit(1);
187: }
188: /* Parent. Close the other side, and return the local side. */
189: close(pin[0]);
190: *fdout = pin[1];
191: close(pout[1]);
192: *fdin = pout[0];
193: return 0;
194: }
1.1 deraadt 195:
1.27 markus 196: void
1.18 markus 197: fatal(const char *fmt,...)
198: {
199: va_list ap;
200: char buf[1024];
201:
202: va_start(ap, fmt);
203: vsnprintf(buf, sizeof(buf), fmt, ap);
204: va_end(ap);
205: fprintf(stderr, "%s\n", buf);
206: exit(255);
1.1 deraadt 207: }
208:
209: /* This stuff used to be in BSD rcp extern.h. */
210:
211: typedef struct {
212: int cnt;
213: char *buf;
214: } BUF;
215:
216: extern int iamremote;
217:
1.18 markus 218: BUF *allocbuf(BUF *, int, int);
219: char *colon(char *);
220: void lostconn(int);
221: void nospace(void);
222: int okname(char *);
223: void run_err(const char *,...);
224: void verifydir(char *);
1.1 deraadt 225:
226: /* Stuff from BSD rcp.c continues. */
227:
228: struct passwd *pwd;
1.18 markus 229: uid_t userid;
1.1 deraadt 230: int errs, remin, remout;
231: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
232:
233: #define CMDNEEDS 64
234: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
235:
1.18 markus 236: int response(void);
237: void rsource(char *, struct stat *);
238: void sink(int, char *[]);
239: void source(int, char *[]);
240: void tolocal(int, char *[]);
241: void toremote(char *, int, char *[]);
242: void usage(void);
1.1 deraadt 243:
244: int
245: main(argc, argv)
246: int argc;
247: char *argv[];
248: {
249: int ch, fflag, tflag;
250: char *targ;
251: extern char *optarg;
252: extern int optind;
253:
254: fflag = tflag = 0;
1.23 markus 255: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46")) != EOF)
1.18 markus 256: switch (ch) {
257: /* User-visible flags. */
1.23 markus 258: case '4':
1.27 markus 259: IPv4 = 1;
1.23 markus 260: break;
261: case '6':
1.27 markus 262: IPv6 = 1;
1.23 markus 263: break;
1.1 deraadt 264: case 'p':
265: pflag = 1;
266: break;
267: case 'P':
1.18 markus 268: port = optarg;
269: break;
1.1 deraadt 270: case 'r':
271: iamrecursive = 1;
272: break;
1.18 markus 273: /* Server options. */
1.1 deraadt 274: case 'd':
275: targetshouldbedirectory = 1;
276: break;
1.18 markus 277: case 'f': /* "from" */
1.1 deraadt 278: iamremote = 1;
279: fflag = 1;
280: break;
1.18 markus 281: case 't': /* "to" */
1.1 deraadt 282: iamremote = 1;
283: tflag = 1;
284: break;
285: case 'c':
286: cipher = optarg;
1.18 markus 287: break;
1.1 deraadt 288: case 'i':
1.18 markus 289: identity = optarg;
1.1 deraadt 290: break;
291: case 'v':
1.17 markus 292: verbose_mode = 1;
1.18 markus 293: break;
1.1 deraadt 294: case 'B':
1.18 markus 295: batchmode = 1;
296: break;
1.1 deraadt 297: case 'C':
1.18 markus 298: compress = 1;
299: break;
1.6 aaron 300: case 'q':
1.18 markus 301: showprogress = 0;
302: break;
1.1 deraadt 303: case '?':
304: default:
305: usage();
306: }
307: argc -= optind;
308: argv += optind;
309:
310: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 311: fatal("unknown user %d", (int) userid);
1.1 deraadt 312:
1.18 markus 313: if (!isatty(STDERR_FILENO))
1.7 deraadt 314: showprogress = 0;
315:
1.1 deraadt 316: remin = STDIN_FILENO;
317: remout = STDOUT_FILENO;
318:
1.18 markus 319: if (fflag) {
320: /* Follow "protocol", send data. */
321: (void) response();
1.1 deraadt 322: source(argc, argv);
323: exit(errs != 0);
324: }
1.18 markus 325: if (tflag) {
326: /* Receive data. */
1.1 deraadt 327: sink(argc, argv);
328: exit(errs != 0);
329: }
330: if (argc < 2)
331: usage();
332: if (argc > 2)
333: targetshouldbedirectory = 1;
334:
335: remin = remout = -1;
336: /* Command to be executed on remote system using "ssh". */
1.18 markus 337: (void) sprintf(cmd, "scp%s%s%s%s", verbose_mode ? " -v" : "",
338: iamrecursive ? " -r" : "", pflag ? " -p" : "",
339: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 340:
1.18 markus 341: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 342:
343: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
344: toremote(targ, argc, argv);
345: else {
1.18 markus 346: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 347: if (targetshouldbedirectory)
348: verifydir(argv[argc - 1]);
349: }
350: exit(errs != 0);
351: }
352:
1.23 markus 353: char *
354: cleanhostname(host)
355: char *host;
356: {
357: if (*host == '[' && host[strlen(host) - 1] == ']') {
358: host[strlen(host) - 1] = '\0';
359: return (host + 1);
360: } else
361: return host;
362: }
363:
1.1 deraadt 364: void
365: toremote(targ, argc, argv)
366: char *targ, *argv[];
367: int argc;
368: {
369: int i, len;
370: char *bp, *host, *src, *suser, *thost, *tuser;
371:
372: *targ++ = 0;
373: if (*targ == 0)
374: targ = ".";
375:
376: if ((thost = strchr(argv[argc - 1], '@'))) {
377: /* user@host */
378: *thost++ = 0;
379: tuser = argv[argc - 1];
380: if (*tuser == '\0')
381: tuser = NULL;
382: else if (!okname(tuser))
383: exit(1);
384: } else {
385: thost = argv[argc - 1];
386: tuser = NULL;
387: }
388:
389: for (i = 0; i < argc - 1; i++) {
390: src = colon(argv[i]);
1.18 markus 391: if (src) { /* remote to remote */
1.1 deraadt 392: *src++ = 0;
393: if (*src == 0)
394: src = ".";
395: host = strchr(argv[i], '@');
396: len = strlen(SSH_PROGRAM) + strlen(argv[i]) +
1.18 markus 397: strlen(src) + (tuser ? strlen(tuser) : 0) +
398: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
399: bp = xmalloc(len);
1.1 deraadt 400: if (host) {
401: *host++ = 0;
1.23 markus 402: host = cleanhostname(host);
1.1 deraadt 403: suser = argv[i];
404: if (*suser == '\0')
405: suser = pwd->pw_name;
406: else if (!okname(suser))
407: continue;
1.18 markus 408: (void) sprintf(bp,
409: "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'",
410: SSH_PROGRAM, verbose_mode ? " -v" : "",
411: suser, host, cmd, src,
412: tuser ? tuser : "", tuser ? "@" : "",
413: thost, targ);
1.23 markus 414: } else {
415: host = cleanhostname(argv[i]);
1.18 markus 416: (void) sprintf(bp,
417: "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'",
418: SSH_PROGRAM, verbose_mode ? " -v" : "",
1.23 markus 419: host, cmd, src,
1.18 markus 420: tuser ? tuser : "", tuser ? "@" : "",
421: thost, targ);
1.23 markus 422: }
1.18 markus 423: if (verbose_mode)
424: fprintf(stderr, "Executing: %s\n", bp);
425: (void) system(bp);
426: (void) xfree(bp);
427: } else { /* local to remote */
1.1 deraadt 428: if (remin == -1) {
429: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 430: bp = xmalloc(len);
431: (void) sprintf(bp, "%s -t %s", cmd, targ);
1.23 markus 432: host = cleanhostname(thost);
1.18 markus 433: if (do_cmd(host, tuser,
1.1 deraadt 434: bp, &remin, &remout) < 0)
1.18 markus 435: exit(1);
1.1 deraadt 436: if (response() < 0)
437: exit(1);
1.18 markus 438: (void) xfree(bp);
1.1 deraadt 439: }
1.18 markus 440: source(1, argv + i);
1.1 deraadt 441: }
442: }
443: }
444:
445: void
446: tolocal(argc, argv)
447: int argc;
448: char *argv[];
449: {
450: int i, len;
451: char *bp, *host, *src, *suser;
452:
453: for (i = 0; i < argc - 1; i++) {
1.18 markus 454: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 455: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.18 markus 456: strlen(argv[argc - 1]) + 20;
1.1 deraadt 457: bp = xmalloc(len);
1.18 markus 458: (void) sprintf(bp, "exec %s%s%s %s %s", _PATH_CP,
459: iamrecursive ? " -r" : "", pflag ? " -p" : "",
460: argv[i], argv[argc - 1]);
461: if (verbose_mode)
462: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 463: if (system(bp))
464: ++errs;
1.18 markus 465: (void) xfree(bp);
1.1 deraadt 466: continue;
467: }
468: *src++ = 0;
469: if (*src == 0)
470: src = ".";
471: if ((host = strchr(argv[i], '@')) == NULL) {
472: host = argv[i];
473: suser = NULL;
474: } else {
475: *host++ = 0;
476: suser = argv[i];
477: if (*suser == '\0')
478: suser = pwd->pw_name;
479: else if (!okname(suser))
480: continue;
481: }
1.23 markus 482: host = cleanhostname(host);
1.1 deraadt 483: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 484: bp = xmalloc(len);
485: (void) sprintf(bp, "%s -f %s", cmd, src);
486: if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
487: (void) xfree(bp);
488: ++errs;
489: continue;
1.1 deraadt 490: }
1.18 markus 491: xfree(bp);
1.1 deraadt 492: sink(1, argv + argc - 1);
1.18 markus 493: (void) close(remin);
1.1 deraadt 494: remin = remout = -1;
495: }
496: }
497:
498: void
499: source(argc, argv)
500: int argc;
501: char *argv[];
502: {
503: struct stat stb;
504: static BUF buffer;
505: BUF *bp;
506: off_t i;
507: int amt, fd, haderr, indx, result;
508: char *last, *name, buf[2048];
509:
510: for (indx = 0; indx < argc; ++indx) {
1.18 markus 511: name = argv[indx];
1.11 aaron 512: statbytes = 0;
1.1 deraadt 513: if ((fd = open(name, O_RDONLY, 0)) < 0)
514: goto syserr;
515: if (fstat(fd, &stb) < 0) {
516: syserr: run_err("%s: %s", name, strerror(errno));
517: goto next;
518: }
519: switch (stb.st_mode & S_IFMT) {
520: case S_IFREG:
521: break;
522: case S_IFDIR:
523: if (iamrecursive) {
524: rsource(name, &stb);
525: goto next;
526: }
527: /* FALLTHROUGH */
528: default:
529: run_err("%s: not a regular file", name);
530: goto next;
531: }
532: if ((last = strrchr(name, '/')) == NULL)
533: last = name;
534: else
535: ++last;
1.11 aaron 536: curfile = last;
1.1 deraadt 537: if (pflag) {
538: /*
539: * Make it compatible with possible future
540: * versions expecting microseconds.
541: */
1.18 markus 542: (void) sprintf(buf, "T%lu 0 %lu 0\n",
543: (unsigned long) stb.st_mtime,
544: (unsigned long) stb.st_atime);
1.29 deraadt 545: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 546: if (response() < 0)
547: goto next;
548: }
549: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.18 markus 550: (void) sprintf(buf, "C%04o %lu %s\n",
551: (unsigned int) (stb.st_mode & FILEMODEMASK),
552: (unsigned long) stb.st_size,
553: last);
554: if (verbose_mode) {
555: fprintf(stderr, "Sending file modes: %s", buf);
556: fflush(stderr);
557: }
1.29 deraadt 558: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 559: if (response() < 0)
560: goto next;
561: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 562: next: (void) close(fd);
1.1 deraadt 563: continue;
564: }
1.12 aaron 565: if (showprogress) {
566: totalbytes = stb.st_size;
1.6 aaron 567: progressmeter(-1);
1.12 aaron 568: }
1.1 deraadt 569: /* Keep writing after an error so that we stay sync'd up. */
570: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
571: amt = bp->cnt;
572: if (i + amt > stb.st_size)
573: amt = stb.st_size - i;
574: if (!haderr) {
1.30 deraadt 575: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 576: if (result != amt)
577: haderr = result >= 0 ? EIO : errno;
578: }
579: if (haderr)
1.29 deraadt 580: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 581: else {
1.29 deraadt 582: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 583: if (result != amt)
584: haderr = result >= 0 ? EIO : errno;
1.4 aaron 585: statbytes += result;
1.1 deraadt 586: }
587: }
1.18 markus 588: if (showprogress)
1.6 aaron 589: progressmeter(1);
1.4 aaron 590:
1.1 deraadt 591: if (close(fd) < 0 && !haderr)
592: haderr = errno;
593: if (!haderr)
1.29 deraadt 594: (void) atomicio(write, remout, "", 1);
1.1 deraadt 595: else
596: run_err("%s: %s", name, strerror(haderr));
1.18 markus 597: (void) response();
1.1 deraadt 598: }
599: }
600:
601: void
602: rsource(name, statp)
603: char *name;
604: struct stat *statp;
605: {
606: DIR *dirp;
607: struct dirent *dp;
608: char *last, *vect[1], path[1100];
609:
610: if (!(dirp = opendir(name))) {
611: run_err("%s: %s", name, strerror(errno));
612: return;
613: }
614: last = strrchr(name, '/');
615: if (last == 0)
616: last = name;
617: else
618: last++;
619: if (pflag) {
1.18 markus 620: (void) sprintf(path, "T%lu 0 %lu 0\n",
621: (unsigned long) statp->st_mtime,
622: (unsigned long) statp->st_atime);
1.29 deraadt 623: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 624: if (response() < 0) {
625: closedir(dirp);
626: return;
627: }
628: }
1.18 markus 629: (void) sprintf(path, "D%04o %d %.1024s\n",
630: (unsigned int) (statp->st_mode & FILEMODEMASK),
631: 0, last);
632: if (verbose_mode)
633: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 634: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 635: if (response() < 0) {
636: closedir(dirp);
637: return;
638: }
639: while ((dp = readdir(dirp))) {
640: if (dp->d_ino == 0)
641: continue;
642: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
643: continue;
644: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
645: run_err("%s/%s: name too long", name, dp->d_name);
646: continue;
647: }
1.18 markus 648: (void) sprintf(path, "%s/%s", name, dp->d_name);
1.1 deraadt 649: vect[0] = path;
650: source(1, vect);
651: }
1.18 markus 652: (void) closedir(dirp);
1.29 deraadt 653: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 654: (void) response();
1.1 deraadt 655: }
656:
657: void
658: sink(argc, argv)
659: int argc;
660: char *argv[];
661: {
662: static BUF buffer;
663: struct stat stb;
1.18 markus 664: enum {
665: YES, NO, DISPLAYED
666: } wrerr;
1.1 deraadt 667: BUF *bp;
668: off_t i, j;
669: int amt, count, exists, first, mask, mode, ofd, omode;
670: int setimes, size, targisdir, wrerrno = 0;
671: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.18 markus 672: struct utimbuf ut;
673: int dummy_usec;
1.1 deraadt 674:
675: #define SCREWUP(str) { why = str; goto screwup; }
676:
677: setimes = targisdir = 0;
678: mask = umask(0);
679: if (!pflag)
1.18 markus 680: (void) umask(mask);
1.1 deraadt 681: if (argc != 1) {
682: run_err("ambiguous target");
683: exit(1);
684: }
685: targ = *argv;
686: if (targetshouldbedirectory)
687: verifydir(targ);
1.18 markus 688:
1.29 deraadt 689: (void) atomicio(write, remout, "", 1);
1.1 deraadt 690: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
691: targisdir = 1;
692: for (first = 1;; first = 0) {
693: cp = buf;
1.30 deraadt 694: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 695: return;
696: if (*cp++ == '\n')
697: SCREWUP("unexpected <newline>");
698: do {
1.30 deraadt 699: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 700: SCREWUP("lost connection");
701: *cp++ = ch;
702: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
703: *cp = 0;
704:
705: if (buf[0] == '\01' || buf[0] == '\02') {
706: if (iamremote == 0)
1.29 deraadt 707: (void) atomicio(write, STDERR_FILENO,
1.18 markus 708: buf + 1, strlen(buf + 1));
1.1 deraadt 709: if (buf[0] == '\02')
710: exit(1);
711: ++errs;
712: continue;
713: }
714: if (buf[0] == 'E') {
1.29 deraadt 715: (void) atomicio(write, remout, "", 1);
1.1 deraadt 716: return;
717: }
718: if (ch == '\n')
719: *--cp = 0;
720:
721: #define getnum(t) (t) = 0; \
722: while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
723: cp = buf;
724: if (*cp == 'T') {
725: setimes++;
726: cp++;
727: getnum(ut.modtime);
728: if (*cp++ != ' ')
729: SCREWUP("mtime.sec not delimited");
730: getnum(dummy_usec);
731: if (*cp++ != ' ')
732: SCREWUP("mtime.usec not delimited");
733: getnum(ut.actime);
734: if (*cp++ != ' ')
735: SCREWUP("atime.sec not delimited");
736: getnum(dummy_usec);
737: if (*cp++ != '\0')
738: SCREWUP("atime.usec not delimited");
1.29 deraadt 739: (void) atomicio(write, remout, "", 1);
1.1 deraadt 740: continue;
741: }
742: if (*cp != 'C' && *cp != 'D') {
743: /*
744: * Check for the case "rcp remote:foo\* local:bar".
745: * In this case, the line "No match." can be returned
746: * by the shell before the rcp command on the remote is
747: * executed so the ^Aerror_message convention isn't
748: * followed.
749: */
750: if (first) {
751: run_err("%s", cp);
752: exit(1);
753: }
754: SCREWUP("expected control record");
755: }
756: mode = 0;
757: for (++cp; cp < buf + 5; cp++) {
758: if (*cp < '0' || *cp > '7')
759: SCREWUP("bad mode");
760: mode = (mode << 3) | (*cp - '0');
761: }
762: if (*cp++ != ' ')
763: SCREWUP("mode not delimited");
764:
1.18 markus 765: for (size = 0; *cp >= '0' && *cp <= '9';)
1.1 deraadt 766: size = size * 10 + (*cp++ - '0');
767: if (*cp++ != ' ')
768: SCREWUP("size not delimited");
769: if (targisdir) {
770: static char *namebuf;
771: static int cursize;
772: size_t need;
773:
774: need = strlen(targ) + strlen(cp) + 250;
775: if (need > cursize)
1.18 markus 776: namebuf = xmalloc(need);
777: (void) sprintf(namebuf, "%s%s%s", targ,
778: *targ ? "/" : "", cp);
1.1 deraadt 779: np = namebuf;
780: } else
781: np = targ;
1.12 aaron 782: curfile = cp;
1.1 deraadt 783: exists = stat(np, &stb) == 0;
784: if (buf[0] == 'D') {
785: int mod_flag = pflag;
786: if (exists) {
787: if (!S_ISDIR(stb.st_mode)) {
788: errno = ENOTDIR;
789: goto bad;
790: }
791: if (pflag)
1.18 markus 792: (void) chmod(np, mode);
1.1 deraadt 793: } else {
1.18 markus 794: /* Handle copying from a read-only
795: directory */
1.1 deraadt 796: mod_flag = 1;
797: if (mkdir(np, mode | S_IRWXU) < 0)
798: goto bad;
799: }
800: vect[0] = np;
801: sink(1, vect);
802: if (setimes) {
803: setimes = 0;
804: if (utime(np, &ut) < 0)
1.18 markus 805: run_err("%s: set times: %s",
806: np, strerror(errno));
1.1 deraadt 807: }
808: if (mod_flag)
1.18 markus 809: (void) chmod(np, mode);
1.1 deraadt 810: continue;
811: }
812: omode = mode;
813: mode |= S_IWRITE;
1.18 markus 814: if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) {
1.1 deraadt 815: bad: run_err("%s: %s", np, strerror(errno));
816: continue;
817: }
1.29 deraadt 818: (void) atomicio(write, remout, "", 1);
1.1 deraadt 819: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 820: (void) close(ofd);
1.1 deraadt 821: continue;
822: }
823: cp = bp->buf;
824: wrerr = NO;
1.7 deraadt 825:
826: if (showprogress) {
827: totalbytes = size;
828: progressmeter(-1);
829: }
1.12 aaron 830: statbytes = 0;
1.1 deraadt 831: for (count = i = 0; i < size; i += 4096) {
832: amt = 4096;
833: if (i + amt > size)
834: amt = size - i;
835: count += amt;
836: do {
1.30 deraadt 837: j = atomicio(read, remin, cp, amt);
1.1 deraadt 838: if (j <= 0) {
839: run_err("%s", j ? strerror(errno) :
1.18 markus 840: "dropped connection");
1.1 deraadt 841: exit(1);
842: }
843: amt -= j;
844: cp += j;
1.18 markus 845: statbytes += j;
1.1 deraadt 846: } while (amt > 0);
847: if (count == bp->cnt) {
848: /* Keep reading so we stay sync'd up. */
849: if (wrerr == NO) {
1.30 deraadt 850: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 851: if (j != count) {
852: wrerr = YES;
1.18 markus 853: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 854: }
855: }
856: count = 0;
857: cp = bp->buf;
858: }
859: }
1.7 deraadt 860: if (showprogress)
861: progressmeter(1);
1.1 deraadt 862: if (count != 0 && wrerr == NO &&
1.30 deraadt 863: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 864: wrerr = YES;
1.18 markus 865: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 866: }
867: #if 0
868: if (ftruncate(ofd, size)) {
869: run_err("%s: truncate: %s", np, strerror(errno));
870: wrerr = DISPLAYED;
871: }
872: #endif
873: if (pflag) {
874: if (exists || omode != mode)
875: if (fchmod(ofd, omode))
876: run_err("%s: set mode: %s",
1.18 markus 877: np, strerror(errno));
1.1 deraadt 878: } else {
879: if (!exists && omode != mode)
880: if (fchmod(ofd, omode & ~mask))
881: run_err("%s: set mode: %s",
1.18 markus 882: np, strerror(errno));
1.1 deraadt 883: }
1.33 ! provos 884: if (close(ofd) == -1) {
! 885: wrerr = YES;
! 886: wrerrno = errno;
! 887: }
1.18 markus 888: (void) response();
1.1 deraadt 889: if (setimes && wrerr == NO) {
890: setimes = 0;
891: if (utime(np, &ut) < 0) {
892: run_err("%s: set times: %s",
1.18 markus 893: np, strerror(errno));
1.1 deraadt 894: wrerr = DISPLAYED;
895: }
896: }
1.18 markus 897: switch (wrerr) {
1.1 deraadt 898: case YES:
899: run_err("%s: %s", np, strerror(wrerrno));
900: break;
901: case NO:
1.29 deraadt 902: (void) atomicio(write, remout, "", 1);
1.1 deraadt 903: break;
904: case DISPLAYED:
905: break;
906: }
907: }
908: screwup:
909: run_err("protocol error: %s", why);
910: exit(1);
911: }
912:
913: int
914: response()
915: {
916: char ch, *cp, resp, rbuf[2048];
917:
1.30 deraadt 918: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 919: lostconn(0);
920:
921: cp = rbuf;
1.18 markus 922: switch (resp) {
923: case 0: /* ok */
1.1 deraadt 924: return (0);
925: default:
926: *cp++ = resp;
927: /* FALLTHROUGH */
1.18 markus 928: case 1: /* error, followed by error msg */
929: case 2: /* fatal error, "" */
1.1 deraadt 930: do {
1.30 deraadt 931: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 932: lostconn(0);
933: *cp++ = ch;
934: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
935:
936: if (!iamremote)
1.29 deraadt 937: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 938: ++errs;
939: if (resp == 1)
940: return (-1);
941: exit(1);
942: }
943: /* NOTREACHED */
944: }
945:
946: void
947: usage()
948: {
1.18 markus 949: (void) fprintf(stderr,
1.24 markus 950: "usage: scp [-pqrvC46] [-P port] [-c cipher] [-i identity] f1 f2; or:\n scp [options] f1 ... fn directory\n");
1.1 deraadt 951: exit(1);
952: }
953:
954: void
1.18 markus 955: run_err(const char *fmt,...)
1.1 deraadt 956: {
957: static FILE *fp;
958: va_list ap;
959: va_start(ap, fmt);
960:
961: ++errs;
962: if (fp == NULL && !(fp = fdopen(remout, "w")))
963: return;
1.18 markus 964: (void) fprintf(fp, "%c", 0x01);
965: (void) fprintf(fp, "scp: ");
966: (void) vfprintf(fp, fmt, ap);
967: (void) fprintf(fp, "\n");
968: (void) fflush(fp);
969:
970: if (!iamremote) {
971: vfprintf(stderr, fmt, ap);
972: fprintf(stderr, "\n");
973: }
1.1 deraadt 974: va_end(ap);
975: }
976:
977: /* Stuff below is from BSD rcp util.c. */
978:
979: /*-
980: * Copyright (c) 1992, 1993
981: * The Regents of the University of California. All rights reserved.
982: *
983: * Redistribution and use in source and binary forms, with or without
984: * modification, are permitted provided that the following conditions
985: * are met:
986: * 1. Redistributions of source code must retain the above copyright
987: * notice, this list of conditions and the following disclaimer.
988: * 2. Redistributions in binary form must reproduce the above copyright
989: * notice, this list of conditions and the following disclaimer in the
990: * documentation and/or other materials provided with the distribution.
991: * 3. All advertising materials mentioning features or use of this software
992: * must display the following acknowledgement:
993: * This product includes software developed by the University of
994: * California, Berkeley and its contributors.
995: * 4. Neither the name of the University nor the names of its contributors
996: * may be used to endorse or promote products derived from this software
997: * without specific prior written permission.
998: *
999: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
1000: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1001: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1002: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
1003: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1004: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1005: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1006: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1007: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1008: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1009: * SUCH DAMAGE.
1010: *
1.33 ! provos 1011: * $OpenBSD: scp.c,v 1.32 2000/06/20 01:39:44 markus Exp $
1.1 deraadt 1012: */
1013:
1014: char *
1015: colon(cp)
1016: char *cp;
1017: {
1.23 markus 1018: int flag = 0;
1019:
1.1 deraadt 1020: if (*cp == ':') /* Leading colon is part of file name. */
1021: return (0);
1.23 markus 1022: if (*cp == '[')
1023: flag = 1;
1.1 deraadt 1024:
1025: for (; *cp; ++cp) {
1.23 markus 1026: if (*cp == '@' && *(cp+1) == '[')
1027: flag = 1;
1028: if (*cp == ']' && *(cp+1) == ':' && flag)
1029: return (cp+1);
1030: if (*cp == ':' && !flag)
1.1 deraadt 1031: return (cp);
1032: if (*cp == '/')
1033: return (0);
1034: }
1035: return (0);
1036: }
1037:
1038: void
1039: verifydir(cp)
1040: char *cp;
1041: {
1042: struct stat stb;
1043:
1044: if (!stat(cp, &stb)) {
1045: if (S_ISDIR(stb.st_mode))
1046: return;
1047: errno = ENOTDIR;
1048: }
1049: run_err("%s: %s", cp, strerror(errno));
1050: exit(1);
1051: }
1052:
1053: int
1054: okname(cp0)
1055: char *cp0;
1056: {
1057: int c;
1058: char *cp;
1059:
1060: cp = cp0;
1061: do {
1062: c = *cp;
1063: if (c & 0200)
1064: goto bad;
1.25 markus 1065: if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-' && c != '.')
1.1 deraadt 1066: goto bad;
1067: } while (*++cp);
1068: return (1);
1069:
1.25 markus 1070: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1071: return (0);
1072: }
1073:
1074: BUF *
1075: allocbuf(bp, fd, blksize)
1076: BUF *bp;
1077: int fd, blksize;
1078: {
1079: size_t size;
1080: struct stat stb;
1081:
1082: if (fstat(fd, &stb) < 0) {
1083: run_err("fstat: %s", strerror(errno));
1084: return (0);
1085: }
1.18 markus 1086: if (stb.st_blksize == 0)
1087: size = blksize;
1088: else
1089: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1090: stb.st_blksize;
1.1 deraadt 1091: if (bp->cnt >= size)
1092: return (bp);
1.18 markus 1093: if (bp->buf == NULL)
1094: bp->buf = xmalloc(size);
1095: else
1096: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1097: bp->cnt = size;
1098: return (bp);
1099: }
1100:
1101: void
1102: lostconn(signo)
1103: int signo;
1104: {
1105: if (!iamremote)
1106: fprintf(stderr, "lost connection\n");
1107: exit(1);
1108: }
1.4 aaron 1109:
1.10 deraadt 1110:
1.8 deraadt 1111: void
1112: alarmtimer(int wait)
1.4 aaron 1113: {
1.18 markus 1114: struct itimerval itv;
1.4 aaron 1115:
1.18 markus 1116: itv.it_value.tv_sec = wait;
1117: itv.it_value.tv_usec = 0;
1118: itv.it_interval = itv.it_value;
1119: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1120: }
1121:
1.8 deraadt 1122: void
1.26 markus 1123: updateprogressmeter(int ignore)
1.4 aaron 1124: {
1.9 deraadt 1125: int save_errno = errno;
1126:
1.4 aaron 1127: progressmeter(0);
1.9 deraadt 1128: errno = save_errno;
1.4 aaron 1129: }
1130:
1.16 deraadt 1131: int
1132: foregroundproc()
1133: {
1134: static pid_t pgrp = -1;
1135: int ctty_pgrp;
1136:
1137: if (pgrp == -1)
1138: pgrp = getpgrp();
1139:
1.18 markus 1140: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1141: ctty_pgrp == pgrp));
1.16 deraadt 1142: }
1143:
1.8 deraadt 1144: void
1145: progressmeter(int flag)
1.4 aaron 1146: {
1147: static const char prefixes[] = " KMGTP";
1148: static struct timeval lastupdate;
1.11 aaron 1149: static off_t lastsize;
1.4 aaron 1150: struct timeval now, td, wait;
1151: off_t cursize, abbrevsize;
1152: double elapsed;
1153: int ratio, barlength, i, remaining;
1154: char buf[256];
1155:
1156: if (flag == -1) {
1.18 markus 1157: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1158: lastupdate = start;
1.11 aaron 1159: lastsize = 0;
1.18 markus 1160: }
1.16 deraadt 1161: if (foregroundproc() == 0)
1162: return;
1163:
1.18 markus 1164: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1165: cursize = statbytes;
1.13 aaron 1166: if (totalbytes != 0) {
1.21 markus 1167: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1168: ratio = MAX(ratio, 0);
1169: ratio = MIN(ratio, 100);
1.18 markus 1170: } else
1.13 aaron 1171: ratio = 100;
1172:
1.18 markus 1173: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1174:
1.11 aaron 1175: barlength = getttywidth() - 51;
1.4 aaron 1176: if (barlength > 0) {
1177: i = barlength * ratio / 100;
1178: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1179: "|%.*s%*s|", i,
1180: "*****************************************************************************"
1181: "*****************************************************************************",
1182: barlength - i, "");
1.4 aaron 1183: }
1184: i = 0;
1185: abbrevsize = cursize;
1186: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1187: i++;
1188: abbrevsize >>= 10;
1189: }
1190: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ",
1.18 markus 1191: (quad_t) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' :
1192: 'B');
1.4 aaron 1193:
1194: timersub(&now, &lastupdate, &wait);
1195: if (cursize > lastsize) {
1196: lastupdate = now;
1197: lastsize = cursize;
1198: if (wait.tv_sec >= STALLTIME) {
1199: start.tv_sec += wait.tv_sec;
1200: start.tv_usec += wait.tv_usec;
1201: }
1202: wait.tv_sec = 0;
1203: }
1204: timersub(&now, &start, &td);
1.6 aaron 1205: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1206:
1207: if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes) {
1208: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1209: " --:-- ETA");
1.4 aaron 1210: } else if (wait.tv_sec >= STALLTIME) {
1211: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1212: " - stalled -");
1.4 aaron 1213: } else {
1.28 deraadt 1214: if (flag != 1)
1215: remaining =
1216: (int)(totalbytes / (statbytes / elapsed) - elapsed);
1217: else
1218: remaining = elapsed;
1219:
1.14 aaron 1220: i = remaining / 3600;
1.4 aaron 1221: if (i)
1222: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1223: "%2d:", i);
1.4 aaron 1224: else
1225: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1226: " ");
1.4 aaron 1227: i = remaining % 3600;
1228: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.28 deraadt 1229: "%02d:%02d%s", i / 60, i % 60,
1230: (flag != 1) ? " ETA" : " ");
1.4 aaron 1231: }
1.10 deraadt 1232: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1233:
1234: if (flag == -1) {
1.26 markus 1235: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1236: alarmtimer(1);
1237: } else if (flag == 1) {
1.10 deraadt 1238: alarmtimer(0);
1.29 deraadt 1239: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1240: statbytes = 0;
1.4 aaron 1241: }
1242: }
1243:
1.8 deraadt 1244: int
1245: getttywidth(void)
1.4 aaron 1246: {
1247: struct winsize winsize;
1248:
1249: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1250: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1251: else
1.18 markus 1252: return (80);
1.4 aaron 1253: }
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