Annotation of src/usr.bin/ssh/scp.c, Revision 1.34
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"
1.34 ! deraadt 48: RCSID("$OpenBSD: scp.c,v 1.33 2000/07/13 23:19:31 provos 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:
1.34 ! deraadt 106: /* This is the program to execute for the secured connection. ("ssh" or -S) */
! 107: char *ssh_program = SSH_PROGRAM;
! 108:
1.20 markus 109: /*
110: * This function executes the given command as the specified user on the
111: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
112: * assigns the input and output file descriptors on success.
113: */
1.1 deraadt 114:
1.27 markus 115: int
1.18 markus 116: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
1.1 deraadt 117: {
1.18 markus 118: int pin[2], pout[2], reserved[2];
119:
120: if (verbose_mode)
121: fprintf(stderr, "Executing: host %s, user %s, command %s\n",
122: host, remuser ? remuser : "(unspecified)", cmd);
123:
1.20 markus 124: /*
125: * Reserve two descriptors so that the real pipes won't get
126: * descriptors 0 and 1 because that will screw up dup2 below.
127: */
1.18 markus 128: pipe(reserved);
129:
130: /* Create a socket pair for communicating with ssh. */
131: if (pipe(pin) < 0)
132: fatal("pipe: %s", strerror(errno));
133: if (pipe(pout) < 0)
134: fatal("pipe: %s", strerror(errno));
135:
136: /* Free the reserved descriptors. */
137: close(reserved[0]);
138: close(reserved[1]);
139:
140: /* For a child to execute the command on the remote host using ssh. */
141: if (fork() == 0) {
142: char *args[100];
143: unsigned int i;
144:
145: /* Child. */
146: close(pin[1]);
147: close(pout[0]);
148: dup2(pin[0], 0);
149: dup2(pout[1], 1);
150: close(pin[0]);
151: close(pout[1]);
152:
153: i = 0;
1.34 ! deraadt 154: args[i++] = ssh_program;
1.18 markus 155: args[i++] = "-x";
156: args[i++] = "-oFallBackToRsh no";
1.23 markus 157: if (IPv4)
158: args[i++] = "-4";
159: if (IPv6)
160: args[i++] = "-6";
1.18 markus 161: if (verbose_mode)
162: args[i++] = "-v";
163: if (compress)
164: args[i++] = "-C";
165: if (batchmode)
166: args[i++] = "-oBatchMode yes";
167: if (cipher != NULL) {
168: args[i++] = "-c";
169: args[i++] = cipher;
170: }
171: if (identity != NULL) {
172: args[i++] = "-i";
173: args[i++] = identity;
174: }
175: if (port != NULL) {
176: args[i++] = "-p";
177: args[i++] = port;
178: }
179: if (remuser != NULL) {
180: args[i++] = "-l";
181: args[i++] = remuser;
182: }
183: args[i++] = host;
184: args[i++] = cmd;
185: args[i++] = NULL;
186:
1.34 ! deraadt 187: execvp(ssh_program, args);
! 188: perror(ssh_program);
1.18 markus 189: exit(1);
190: }
191: /* Parent. Close the other side, and return the local side. */
192: close(pin[0]);
193: *fdout = pin[1];
194: close(pout[1]);
195: *fdin = pout[0];
196: return 0;
197: }
1.1 deraadt 198:
1.27 markus 199: void
1.18 markus 200: fatal(const char *fmt,...)
201: {
202: va_list ap;
203: char buf[1024];
204:
205: va_start(ap, fmt);
206: vsnprintf(buf, sizeof(buf), fmt, ap);
207: va_end(ap);
208: fprintf(stderr, "%s\n", buf);
209: exit(255);
1.1 deraadt 210: }
211:
212: /* This stuff used to be in BSD rcp extern.h. */
213:
214: typedef struct {
215: int cnt;
216: char *buf;
217: } BUF;
218:
219: extern int iamremote;
220:
1.18 markus 221: BUF *allocbuf(BUF *, int, int);
222: char *colon(char *);
223: void lostconn(int);
224: void nospace(void);
225: int okname(char *);
226: void run_err(const char *,...);
227: void verifydir(char *);
1.1 deraadt 228:
229: /* Stuff from BSD rcp.c continues. */
230:
231: struct passwd *pwd;
1.18 markus 232: uid_t userid;
1.1 deraadt 233: int errs, remin, remout;
234: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
235:
236: #define CMDNEEDS 64
237: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
238:
1.18 markus 239: int response(void);
240: void rsource(char *, struct stat *);
241: void sink(int, char *[]);
242: void source(int, char *[]);
243: void tolocal(int, char *[]);
244: void toremote(char *, int, char *[]);
245: void usage(void);
1.1 deraadt 246:
247: int
248: main(argc, argv)
249: int argc;
250: char *argv[];
251: {
252: int ch, fflag, tflag;
253: char *targ;
254: extern char *optarg;
255: extern int optind;
256:
257: fflag = tflag = 0;
1.34 ! deraadt 258: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S")) != EOF)
1.18 markus 259: switch (ch) {
260: /* User-visible flags. */
1.23 markus 261: case '4':
1.27 markus 262: IPv4 = 1;
1.23 markus 263: break;
264: case '6':
1.27 markus 265: IPv6 = 1;
1.23 markus 266: break;
1.1 deraadt 267: case 'p':
268: pflag = 1;
269: break;
270: case 'P':
1.18 markus 271: port = optarg;
272: break;
1.1 deraadt 273: case 'r':
274: iamrecursive = 1;
275: break;
1.34 ! deraadt 276: case 'S':
! 277: ssh_program = optarg;
! 278: break;
! 279:
1.18 markus 280: /* Server options. */
1.1 deraadt 281: case 'd':
282: targetshouldbedirectory = 1;
283: break;
1.18 markus 284: case 'f': /* "from" */
1.1 deraadt 285: iamremote = 1;
286: fflag = 1;
287: break;
1.18 markus 288: case 't': /* "to" */
1.1 deraadt 289: iamremote = 1;
290: tflag = 1;
291: break;
292: case 'c':
293: cipher = optarg;
1.18 markus 294: break;
1.1 deraadt 295: case 'i':
1.18 markus 296: identity = optarg;
1.1 deraadt 297: break;
298: case 'v':
1.17 markus 299: verbose_mode = 1;
1.18 markus 300: break;
1.1 deraadt 301: case 'B':
1.18 markus 302: batchmode = 1;
303: break;
1.1 deraadt 304: case 'C':
1.18 markus 305: compress = 1;
306: break;
1.6 aaron 307: case 'q':
1.18 markus 308: showprogress = 0;
309: break;
1.1 deraadt 310: case '?':
311: default:
312: usage();
313: }
314: argc -= optind;
315: argv += optind;
316:
317: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 318: fatal("unknown user %d", (int) userid);
1.1 deraadt 319:
1.18 markus 320: if (!isatty(STDERR_FILENO))
1.7 deraadt 321: showprogress = 0;
322:
1.1 deraadt 323: remin = STDIN_FILENO;
324: remout = STDOUT_FILENO;
325:
1.18 markus 326: if (fflag) {
327: /* Follow "protocol", send data. */
328: (void) response();
1.1 deraadt 329: source(argc, argv);
330: exit(errs != 0);
331: }
1.18 markus 332: if (tflag) {
333: /* Receive data. */
1.1 deraadt 334: sink(argc, argv);
335: exit(errs != 0);
336: }
337: if (argc < 2)
338: usage();
339: if (argc > 2)
340: targetshouldbedirectory = 1;
341:
342: remin = remout = -1;
343: /* Command to be executed on remote system using "ssh". */
1.18 markus 344: (void) sprintf(cmd, "scp%s%s%s%s", verbose_mode ? " -v" : "",
345: iamrecursive ? " -r" : "", pflag ? " -p" : "",
346: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 347:
1.18 markus 348: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 349:
350: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
351: toremote(targ, argc, argv);
352: else {
1.18 markus 353: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 354: if (targetshouldbedirectory)
355: verifydir(argv[argc - 1]);
356: }
357: exit(errs != 0);
358: }
359:
1.23 markus 360: char *
361: cleanhostname(host)
362: char *host;
363: {
364: if (*host == '[' && host[strlen(host) - 1] == ']') {
365: host[strlen(host) - 1] = '\0';
366: return (host + 1);
367: } else
368: return host;
369: }
370:
1.1 deraadt 371: void
372: toremote(targ, argc, argv)
373: char *targ, *argv[];
374: int argc;
375: {
376: int i, len;
377: char *bp, *host, *src, *suser, *thost, *tuser;
378:
379: *targ++ = 0;
380: if (*targ == 0)
381: targ = ".";
382:
383: if ((thost = strchr(argv[argc - 1], '@'))) {
384: /* user@host */
385: *thost++ = 0;
386: tuser = argv[argc - 1];
387: if (*tuser == '\0')
388: tuser = NULL;
389: else if (!okname(tuser))
390: exit(1);
391: } else {
392: thost = argv[argc - 1];
393: tuser = NULL;
394: }
395:
396: for (i = 0; i < argc - 1; i++) {
397: src = colon(argv[i]);
1.18 markus 398: if (src) { /* remote to remote */
1.1 deraadt 399: *src++ = 0;
400: if (*src == 0)
401: src = ".";
402: host = strchr(argv[i], '@');
1.34 ! deraadt 403: len = strlen(ssh_program) + strlen(argv[i]) +
1.18 markus 404: strlen(src) + (tuser ? strlen(tuser) : 0) +
405: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
406: bp = xmalloc(len);
1.1 deraadt 407: if (host) {
408: *host++ = 0;
1.23 markus 409: host = cleanhostname(host);
1.1 deraadt 410: suser = argv[i];
411: if (*suser == '\0')
412: suser = pwd->pw_name;
413: else if (!okname(suser))
414: continue;
1.18 markus 415: (void) sprintf(bp,
1.34 ! deraadt 416: "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'",
! 417: ssh_program, verbose_mode ? " -v" : "",
! 418: suser, host, cmd, src,
! 419: tuser ? tuser : "", tuser ? "@" : "",
! 420: thost, targ);
1.23 markus 421: } else {
422: host = cleanhostname(argv[i]);
1.18 markus 423: (void) sprintf(bp,
1.34 ! deraadt 424: "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'",
! 425: ssh_program, verbose_mode ? " -v" : "",
! 426: host, cmd, src,
! 427: tuser ? tuser : "", tuser ? "@" : "",
! 428: thost, targ);
1.23 markus 429: }
1.18 markus 430: if (verbose_mode)
431: fprintf(stderr, "Executing: %s\n", bp);
432: (void) system(bp);
433: (void) xfree(bp);
434: } else { /* local to remote */
1.1 deraadt 435: if (remin == -1) {
436: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 437: bp = xmalloc(len);
438: (void) sprintf(bp, "%s -t %s", cmd, targ);
1.23 markus 439: host = cleanhostname(thost);
1.18 markus 440: if (do_cmd(host, tuser,
1.1 deraadt 441: bp, &remin, &remout) < 0)
1.18 markus 442: exit(1);
1.1 deraadt 443: if (response() < 0)
444: exit(1);
1.18 markus 445: (void) xfree(bp);
1.1 deraadt 446: }
1.18 markus 447: source(1, argv + i);
1.1 deraadt 448: }
449: }
450: }
451:
452: void
453: tolocal(argc, argv)
454: int argc;
455: char *argv[];
456: {
457: int i, len;
458: char *bp, *host, *src, *suser;
459:
460: for (i = 0; i < argc - 1; i++) {
1.18 markus 461: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 462: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.18 markus 463: strlen(argv[argc - 1]) + 20;
1.1 deraadt 464: bp = xmalloc(len);
1.18 markus 465: (void) sprintf(bp, "exec %s%s%s %s %s", _PATH_CP,
466: iamrecursive ? " -r" : "", pflag ? " -p" : "",
467: argv[i], argv[argc - 1]);
468: if (verbose_mode)
469: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 470: if (system(bp))
471: ++errs;
1.18 markus 472: (void) xfree(bp);
1.1 deraadt 473: continue;
474: }
475: *src++ = 0;
476: if (*src == 0)
477: src = ".";
478: if ((host = strchr(argv[i], '@')) == NULL) {
479: host = argv[i];
480: suser = NULL;
481: } else {
482: *host++ = 0;
483: suser = argv[i];
484: if (*suser == '\0')
485: suser = pwd->pw_name;
486: else if (!okname(suser))
487: continue;
488: }
1.23 markus 489: host = cleanhostname(host);
1.1 deraadt 490: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 491: bp = xmalloc(len);
492: (void) sprintf(bp, "%s -f %s", cmd, src);
493: if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
494: (void) xfree(bp);
495: ++errs;
496: continue;
1.1 deraadt 497: }
1.18 markus 498: xfree(bp);
1.1 deraadt 499: sink(1, argv + argc - 1);
1.18 markus 500: (void) close(remin);
1.1 deraadt 501: remin = remout = -1;
502: }
503: }
504:
505: void
506: source(argc, argv)
507: int argc;
508: char *argv[];
509: {
510: struct stat stb;
511: static BUF buffer;
512: BUF *bp;
513: off_t i;
514: int amt, fd, haderr, indx, result;
515: char *last, *name, buf[2048];
516:
517: for (indx = 0; indx < argc; ++indx) {
1.18 markus 518: name = argv[indx];
1.11 aaron 519: statbytes = 0;
1.1 deraadt 520: if ((fd = open(name, O_RDONLY, 0)) < 0)
521: goto syserr;
522: if (fstat(fd, &stb) < 0) {
523: syserr: run_err("%s: %s", name, strerror(errno));
524: goto next;
525: }
526: switch (stb.st_mode & S_IFMT) {
527: case S_IFREG:
528: break;
529: case S_IFDIR:
530: if (iamrecursive) {
531: rsource(name, &stb);
532: goto next;
533: }
534: /* FALLTHROUGH */
535: default:
536: run_err("%s: not a regular file", name);
537: goto next;
538: }
539: if ((last = strrchr(name, '/')) == NULL)
540: last = name;
541: else
542: ++last;
1.11 aaron 543: curfile = last;
1.1 deraadt 544: if (pflag) {
545: /*
546: * Make it compatible with possible future
547: * versions expecting microseconds.
548: */
1.18 markus 549: (void) sprintf(buf, "T%lu 0 %lu 0\n",
550: (unsigned long) stb.st_mtime,
551: (unsigned long) stb.st_atime);
1.29 deraadt 552: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 553: if (response() < 0)
554: goto next;
555: }
556: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.18 markus 557: (void) sprintf(buf, "C%04o %lu %s\n",
558: (unsigned int) (stb.st_mode & FILEMODEMASK),
559: (unsigned long) stb.st_size,
560: last);
561: if (verbose_mode) {
562: fprintf(stderr, "Sending file modes: %s", buf);
563: fflush(stderr);
564: }
1.29 deraadt 565: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 566: if (response() < 0)
567: goto next;
568: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 569: next: (void) close(fd);
1.1 deraadt 570: continue;
571: }
1.12 aaron 572: if (showprogress) {
573: totalbytes = stb.st_size;
1.6 aaron 574: progressmeter(-1);
1.12 aaron 575: }
1.1 deraadt 576: /* Keep writing after an error so that we stay sync'd up. */
577: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
578: amt = bp->cnt;
579: if (i + amt > stb.st_size)
580: amt = stb.st_size - i;
581: if (!haderr) {
1.30 deraadt 582: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 583: if (result != amt)
584: haderr = result >= 0 ? EIO : errno;
585: }
586: if (haderr)
1.29 deraadt 587: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 588: else {
1.29 deraadt 589: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 590: if (result != amt)
591: haderr = result >= 0 ? EIO : errno;
1.4 aaron 592: statbytes += result;
1.1 deraadt 593: }
594: }
1.18 markus 595: if (showprogress)
1.6 aaron 596: progressmeter(1);
1.4 aaron 597:
1.1 deraadt 598: if (close(fd) < 0 && !haderr)
599: haderr = errno;
600: if (!haderr)
1.29 deraadt 601: (void) atomicio(write, remout, "", 1);
1.1 deraadt 602: else
603: run_err("%s: %s", name, strerror(haderr));
1.18 markus 604: (void) response();
1.1 deraadt 605: }
606: }
607:
608: void
609: rsource(name, statp)
610: char *name;
611: struct stat *statp;
612: {
613: DIR *dirp;
614: struct dirent *dp;
615: char *last, *vect[1], path[1100];
616:
617: if (!(dirp = opendir(name))) {
618: run_err("%s: %s", name, strerror(errno));
619: return;
620: }
621: last = strrchr(name, '/');
622: if (last == 0)
623: last = name;
624: else
625: last++;
626: if (pflag) {
1.18 markus 627: (void) sprintf(path, "T%lu 0 %lu 0\n",
628: (unsigned long) statp->st_mtime,
629: (unsigned long) statp->st_atime);
1.29 deraadt 630: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 631: if (response() < 0) {
632: closedir(dirp);
633: return;
634: }
635: }
1.18 markus 636: (void) sprintf(path, "D%04o %d %.1024s\n",
637: (unsigned int) (statp->st_mode & FILEMODEMASK),
638: 0, last);
639: if (verbose_mode)
640: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 641: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 642: if (response() < 0) {
643: closedir(dirp);
644: return;
645: }
646: while ((dp = readdir(dirp))) {
647: if (dp->d_ino == 0)
648: continue;
649: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
650: continue;
651: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
652: run_err("%s/%s: name too long", name, dp->d_name);
653: continue;
654: }
1.18 markus 655: (void) sprintf(path, "%s/%s", name, dp->d_name);
1.1 deraadt 656: vect[0] = path;
657: source(1, vect);
658: }
1.18 markus 659: (void) closedir(dirp);
1.29 deraadt 660: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 661: (void) response();
1.1 deraadt 662: }
663:
664: void
665: sink(argc, argv)
666: int argc;
667: char *argv[];
668: {
669: static BUF buffer;
670: struct stat stb;
1.18 markus 671: enum {
672: YES, NO, DISPLAYED
673: } wrerr;
1.1 deraadt 674: BUF *bp;
675: off_t i, j;
676: int amt, count, exists, first, mask, mode, ofd, omode;
677: int setimes, size, targisdir, wrerrno = 0;
678: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.18 markus 679: struct utimbuf ut;
680: int dummy_usec;
1.1 deraadt 681:
682: #define SCREWUP(str) { why = str; goto screwup; }
683:
684: setimes = targisdir = 0;
685: mask = umask(0);
686: if (!pflag)
1.18 markus 687: (void) umask(mask);
1.1 deraadt 688: if (argc != 1) {
689: run_err("ambiguous target");
690: exit(1);
691: }
692: targ = *argv;
693: if (targetshouldbedirectory)
694: verifydir(targ);
1.18 markus 695:
1.29 deraadt 696: (void) atomicio(write, remout, "", 1);
1.1 deraadt 697: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
698: targisdir = 1;
699: for (first = 1;; first = 0) {
700: cp = buf;
1.30 deraadt 701: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 702: return;
703: if (*cp++ == '\n')
704: SCREWUP("unexpected <newline>");
705: do {
1.30 deraadt 706: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 707: SCREWUP("lost connection");
708: *cp++ = ch;
709: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
710: *cp = 0;
711:
712: if (buf[0] == '\01' || buf[0] == '\02') {
713: if (iamremote == 0)
1.29 deraadt 714: (void) atomicio(write, STDERR_FILENO,
1.18 markus 715: buf + 1, strlen(buf + 1));
1.1 deraadt 716: if (buf[0] == '\02')
717: exit(1);
718: ++errs;
719: continue;
720: }
721: if (buf[0] == 'E') {
1.29 deraadt 722: (void) atomicio(write, remout, "", 1);
1.1 deraadt 723: return;
724: }
725: if (ch == '\n')
726: *--cp = 0;
727:
728: #define getnum(t) (t) = 0; \
729: while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
730: cp = buf;
731: if (*cp == 'T') {
732: setimes++;
733: cp++;
734: getnum(ut.modtime);
735: if (*cp++ != ' ')
736: SCREWUP("mtime.sec not delimited");
737: getnum(dummy_usec);
738: if (*cp++ != ' ')
739: SCREWUP("mtime.usec not delimited");
740: getnum(ut.actime);
741: if (*cp++ != ' ')
742: SCREWUP("atime.sec not delimited");
743: getnum(dummy_usec);
744: if (*cp++ != '\0')
745: SCREWUP("atime.usec not delimited");
1.29 deraadt 746: (void) atomicio(write, remout, "", 1);
1.1 deraadt 747: continue;
748: }
749: if (*cp != 'C' && *cp != 'D') {
750: /*
751: * Check for the case "rcp remote:foo\* local:bar".
752: * In this case, the line "No match." can be returned
753: * by the shell before the rcp command on the remote is
754: * executed so the ^Aerror_message convention isn't
755: * followed.
756: */
757: if (first) {
758: run_err("%s", cp);
759: exit(1);
760: }
761: SCREWUP("expected control record");
762: }
763: mode = 0;
764: for (++cp; cp < buf + 5; cp++) {
765: if (*cp < '0' || *cp > '7')
766: SCREWUP("bad mode");
767: mode = (mode << 3) | (*cp - '0');
768: }
769: if (*cp++ != ' ')
770: SCREWUP("mode not delimited");
771:
1.18 markus 772: for (size = 0; *cp >= '0' && *cp <= '9';)
1.1 deraadt 773: size = size * 10 + (*cp++ - '0');
774: if (*cp++ != ' ')
775: SCREWUP("size not delimited");
776: if (targisdir) {
777: static char *namebuf;
778: static int cursize;
779: size_t need;
780:
781: need = strlen(targ) + strlen(cp) + 250;
782: if (need > cursize)
1.18 markus 783: namebuf = xmalloc(need);
784: (void) sprintf(namebuf, "%s%s%s", targ,
785: *targ ? "/" : "", cp);
1.1 deraadt 786: np = namebuf;
787: } else
788: np = targ;
1.12 aaron 789: curfile = cp;
1.1 deraadt 790: exists = stat(np, &stb) == 0;
791: if (buf[0] == 'D') {
792: int mod_flag = pflag;
793: if (exists) {
794: if (!S_ISDIR(stb.st_mode)) {
795: errno = ENOTDIR;
796: goto bad;
797: }
798: if (pflag)
1.18 markus 799: (void) chmod(np, mode);
1.1 deraadt 800: } else {
1.18 markus 801: /* Handle copying from a read-only
802: directory */
1.1 deraadt 803: mod_flag = 1;
804: if (mkdir(np, mode | S_IRWXU) < 0)
805: goto bad;
806: }
807: vect[0] = np;
808: sink(1, vect);
809: if (setimes) {
810: setimes = 0;
811: if (utime(np, &ut) < 0)
1.18 markus 812: run_err("%s: set times: %s",
813: np, strerror(errno));
1.1 deraadt 814: }
815: if (mod_flag)
1.18 markus 816: (void) chmod(np, mode);
1.1 deraadt 817: continue;
818: }
819: omode = mode;
820: mode |= S_IWRITE;
1.18 markus 821: if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) {
1.1 deraadt 822: bad: run_err("%s: %s", np, strerror(errno));
823: continue;
824: }
1.29 deraadt 825: (void) atomicio(write, remout, "", 1);
1.1 deraadt 826: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 827: (void) close(ofd);
1.1 deraadt 828: continue;
829: }
830: cp = bp->buf;
831: wrerr = NO;
1.7 deraadt 832:
833: if (showprogress) {
834: totalbytes = size;
835: progressmeter(-1);
836: }
1.12 aaron 837: statbytes = 0;
1.1 deraadt 838: for (count = i = 0; i < size; i += 4096) {
839: amt = 4096;
840: if (i + amt > size)
841: amt = size - i;
842: count += amt;
843: do {
1.30 deraadt 844: j = atomicio(read, remin, cp, amt);
1.1 deraadt 845: if (j <= 0) {
846: run_err("%s", j ? strerror(errno) :
1.18 markus 847: "dropped connection");
1.1 deraadt 848: exit(1);
849: }
850: amt -= j;
851: cp += j;
1.18 markus 852: statbytes += j;
1.1 deraadt 853: } while (amt > 0);
854: if (count == bp->cnt) {
855: /* Keep reading so we stay sync'd up. */
856: if (wrerr == NO) {
1.30 deraadt 857: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 858: if (j != count) {
859: wrerr = YES;
1.18 markus 860: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 861: }
862: }
863: count = 0;
864: cp = bp->buf;
865: }
866: }
1.7 deraadt 867: if (showprogress)
868: progressmeter(1);
1.1 deraadt 869: if (count != 0 && wrerr == NO &&
1.30 deraadt 870: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 871: wrerr = YES;
1.18 markus 872: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 873: }
874: #if 0
875: if (ftruncate(ofd, size)) {
876: run_err("%s: truncate: %s", np, strerror(errno));
877: wrerr = DISPLAYED;
878: }
879: #endif
880: if (pflag) {
881: if (exists || omode != mode)
882: if (fchmod(ofd, omode))
883: run_err("%s: set mode: %s",
1.18 markus 884: np, strerror(errno));
1.1 deraadt 885: } else {
886: if (!exists && omode != mode)
887: if (fchmod(ofd, omode & ~mask))
888: run_err("%s: set mode: %s",
1.18 markus 889: np, strerror(errno));
1.1 deraadt 890: }
1.33 provos 891: if (close(ofd) == -1) {
892: wrerr = YES;
893: wrerrno = errno;
894: }
1.18 markus 895: (void) response();
1.1 deraadt 896: if (setimes && wrerr == NO) {
897: setimes = 0;
898: if (utime(np, &ut) < 0) {
899: run_err("%s: set times: %s",
1.18 markus 900: np, strerror(errno));
1.1 deraadt 901: wrerr = DISPLAYED;
902: }
903: }
1.18 markus 904: switch (wrerr) {
1.1 deraadt 905: case YES:
906: run_err("%s: %s", np, strerror(wrerrno));
907: break;
908: case NO:
1.29 deraadt 909: (void) atomicio(write, remout, "", 1);
1.1 deraadt 910: break;
911: case DISPLAYED:
912: break;
913: }
914: }
915: screwup:
916: run_err("protocol error: %s", why);
917: exit(1);
918: }
919:
920: int
921: response()
922: {
923: char ch, *cp, resp, rbuf[2048];
924:
1.30 deraadt 925: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 926: lostconn(0);
927:
928: cp = rbuf;
1.18 markus 929: switch (resp) {
930: case 0: /* ok */
1.1 deraadt 931: return (0);
932: default:
933: *cp++ = resp;
934: /* FALLTHROUGH */
1.18 markus 935: case 1: /* error, followed by error msg */
936: case 2: /* fatal error, "" */
1.1 deraadt 937: do {
1.30 deraadt 938: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 939: lostconn(0);
940: *cp++ = ch;
941: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
942:
943: if (!iamremote)
1.29 deraadt 944: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 945: ++errs;
946: if (resp == 1)
947: return (-1);
948: exit(1);
949: }
950: /* NOTREACHED */
951: }
952:
953: void
954: usage()
955: {
1.34 ! deraadt 956: (void) fprintf(stderr, "usage: scp "
! 957: "[-pqrvC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2; or:\n"
! 958: " scp [options] f1 ... fn directory\n");
1.1 deraadt 959: exit(1);
960: }
961:
962: void
1.18 markus 963: run_err(const char *fmt,...)
1.1 deraadt 964: {
965: static FILE *fp;
966: va_list ap;
967: va_start(ap, fmt);
968:
969: ++errs;
970: if (fp == NULL && !(fp = fdopen(remout, "w")))
971: return;
1.18 markus 972: (void) fprintf(fp, "%c", 0x01);
973: (void) fprintf(fp, "scp: ");
974: (void) vfprintf(fp, fmt, ap);
975: (void) fprintf(fp, "\n");
976: (void) fflush(fp);
977:
978: if (!iamremote) {
979: vfprintf(stderr, fmt, ap);
980: fprintf(stderr, "\n");
981: }
1.1 deraadt 982: va_end(ap);
983: }
984:
985: /* Stuff below is from BSD rcp util.c. */
986:
987: /*-
988: * Copyright (c) 1992, 1993
989: * The Regents of the University of California. All rights reserved.
990: *
991: * Redistribution and use in source and binary forms, with or without
992: * modification, are permitted provided that the following conditions
993: * are met:
994: * 1. Redistributions of source code must retain the above copyright
995: * notice, this list of conditions and the following disclaimer.
996: * 2. Redistributions in binary form must reproduce the above copyright
997: * notice, this list of conditions and the following disclaimer in the
998: * documentation and/or other materials provided with the distribution.
999: * 3. All advertising materials mentioning features or use of this software
1000: * must display the following acknowledgement:
1001: * This product includes software developed by the University of
1002: * California, Berkeley and its contributors.
1003: * 4. Neither the name of the University nor the names of its contributors
1004: * may be used to endorse or promote products derived from this software
1005: * without specific prior written permission.
1006: *
1007: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
1008: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1009: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1010: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
1011: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1012: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1013: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1014: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1015: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1016: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1017: * SUCH DAMAGE.
1018: *
1.34 ! deraadt 1019: * $OpenBSD: scp.c,v 1.33 2000/07/13 23:19:31 provos Exp $
1.1 deraadt 1020: */
1021:
1022: char *
1023: colon(cp)
1024: char *cp;
1025: {
1.23 markus 1026: int flag = 0;
1027:
1.1 deraadt 1028: if (*cp == ':') /* Leading colon is part of file name. */
1029: return (0);
1.23 markus 1030: if (*cp == '[')
1031: flag = 1;
1.1 deraadt 1032:
1033: for (; *cp; ++cp) {
1.23 markus 1034: if (*cp == '@' && *(cp+1) == '[')
1035: flag = 1;
1036: if (*cp == ']' && *(cp+1) == ':' && flag)
1037: return (cp+1);
1038: if (*cp == ':' && !flag)
1.1 deraadt 1039: return (cp);
1040: if (*cp == '/')
1041: return (0);
1042: }
1043: return (0);
1044: }
1045:
1046: void
1047: verifydir(cp)
1048: char *cp;
1049: {
1050: struct stat stb;
1051:
1052: if (!stat(cp, &stb)) {
1053: if (S_ISDIR(stb.st_mode))
1054: return;
1055: errno = ENOTDIR;
1056: }
1057: run_err("%s: %s", cp, strerror(errno));
1058: exit(1);
1059: }
1060:
1061: int
1062: okname(cp0)
1063: char *cp0;
1064: {
1065: int c;
1066: char *cp;
1067:
1068: cp = cp0;
1069: do {
1070: c = *cp;
1071: if (c & 0200)
1072: goto bad;
1.25 markus 1073: if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-' && c != '.')
1.1 deraadt 1074: goto bad;
1075: } while (*++cp);
1076: return (1);
1077:
1.25 markus 1078: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1079: return (0);
1080: }
1081:
1082: BUF *
1083: allocbuf(bp, fd, blksize)
1084: BUF *bp;
1085: int fd, blksize;
1086: {
1087: size_t size;
1088: struct stat stb;
1089:
1090: if (fstat(fd, &stb) < 0) {
1091: run_err("fstat: %s", strerror(errno));
1092: return (0);
1093: }
1.18 markus 1094: if (stb.st_blksize == 0)
1095: size = blksize;
1096: else
1097: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1098: stb.st_blksize;
1.1 deraadt 1099: if (bp->cnt >= size)
1100: return (bp);
1.18 markus 1101: if (bp->buf == NULL)
1102: bp->buf = xmalloc(size);
1103: else
1104: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1105: bp->cnt = size;
1106: return (bp);
1107: }
1108:
1109: void
1110: lostconn(signo)
1111: int signo;
1112: {
1113: if (!iamremote)
1114: fprintf(stderr, "lost connection\n");
1115: exit(1);
1116: }
1.4 aaron 1117:
1.10 deraadt 1118:
1.8 deraadt 1119: void
1120: alarmtimer(int wait)
1.4 aaron 1121: {
1.18 markus 1122: struct itimerval itv;
1.4 aaron 1123:
1.18 markus 1124: itv.it_value.tv_sec = wait;
1125: itv.it_value.tv_usec = 0;
1126: itv.it_interval = itv.it_value;
1127: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1128: }
1129:
1.8 deraadt 1130: void
1.26 markus 1131: updateprogressmeter(int ignore)
1.4 aaron 1132: {
1.9 deraadt 1133: int save_errno = errno;
1134:
1.4 aaron 1135: progressmeter(0);
1.9 deraadt 1136: errno = save_errno;
1.4 aaron 1137: }
1138:
1.16 deraadt 1139: int
1140: foregroundproc()
1141: {
1142: static pid_t pgrp = -1;
1143: int ctty_pgrp;
1144:
1145: if (pgrp == -1)
1146: pgrp = getpgrp();
1147:
1.18 markus 1148: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1149: ctty_pgrp == pgrp));
1.16 deraadt 1150: }
1151:
1.8 deraadt 1152: void
1153: progressmeter(int flag)
1.4 aaron 1154: {
1155: static const char prefixes[] = " KMGTP";
1156: static struct timeval lastupdate;
1.11 aaron 1157: static off_t lastsize;
1.4 aaron 1158: struct timeval now, td, wait;
1159: off_t cursize, abbrevsize;
1160: double elapsed;
1161: int ratio, barlength, i, remaining;
1162: char buf[256];
1163:
1164: if (flag == -1) {
1.18 markus 1165: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1166: lastupdate = start;
1.11 aaron 1167: lastsize = 0;
1.18 markus 1168: }
1.16 deraadt 1169: if (foregroundproc() == 0)
1170: return;
1171:
1.18 markus 1172: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1173: cursize = statbytes;
1.13 aaron 1174: if (totalbytes != 0) {
1.21 markus 1175: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1176: ratio = MAX(ratio, 0);
1177: ratio = MIN(ratio, 100);
1.18 markus 1178: } else
1.13 aaron 1179: ratio = 100;
1180:
1.18 markus 1181: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1182:
1.11 aaron 1183: barlength = getttywidth() - 51;
1.4 aaron 1184: if (barlength > 0) {
1185: i = barlength * ratio / 100;
1186: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1187: "|%.*s%*s|", i,
1188: "*****************************************************************************"
1189: "*****************************************************************************",
1190: barlength - i, "");
1.4 aaron 1191: }
1192: i = 0;
1193: abbrevsize = cursize;
1194: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1195: i++;
1196: abbrevsize >>= 10;
1197: }
1198: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ",
1.18 markus 1199: (quad_t) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' :
1200: 'B');
1.4 aaron 1201:
1202: timersub(&now, &lastupdate, &wait);
1203: if (cursize > lastsize) {
1204: lastupdate = now;
1205: lastsize = cursize;
1206: if (wait.tv_sec >= STALLTIME) {
1207: start.tv_sec += wait.tv_sec;
1208: start.tv_usec += wait.tv_usec;
1209: }
1210: wait.tv_sec = 0;
1211: }
1212: timersub(&now, &start, &td);
1.6 aaron 1213: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1214:
1215: if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes) {
1216: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1217: " --:-- ETA");
1.4 aaron 1218: } else if (wait.tv_sec >= STALLTIME) {
1219: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1220: " - stalled -");
1.4 aaron 1221: } else {
1.28 deraadt 1222: if (flag != 1)
1223: remaining =
1224: (int)(totalbytes / (statbytes / elapsed) - elapsed);
1225: else
1226: remaining = elapsed;
1227:
1.14 aaron 1228: i = remaining / 3600;
1.4 aaron 1229: if (i)
1230: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1231: "%2d:", i);
1.4 aaron 1232: else
1233: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1234: " ");
1.4 aaron 1235: i = remaining % 3600;
1236: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.28 deraadt 1237: "%02d:%02d%s", i / 60, i % 60,
1238: (flag != 1) ? " ETA" : " ");
1.4 aaron 1239: }
1.10 deraadt 1240: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1241:
1242: if (flag == -1) {
1.26 markus 1243: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1244: alarmtimer(1);
1245: } else if (flag == 1) {
1.10 deraadt 1246: alarmtimer(0);
1.29 deraadt 1247: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1248: statbytes = 0;
1.4 aaron 1249: }
1250: }
1251:
1.8 deraadt 1252: int
1253: getttywidth(void)
1.4 aaron 1254: {
1255: struct winsize winsize;
1256:
1257: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1258: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1259: else
1.18 markus 1260: return (80);
1.4 aaron 1261: }
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