Annotation of src/usr.bin/ssh/scp.c, Revision 1.36
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: /*
1.35 deraadt 14: * Parts from:
15: *
1.1 deraadt 16: * Copyright (c) 1983, 1990, 1992, 1993, 1995
17: * The Regents of the University of California. All rights reserved.
18: *
19: * Redistribution and use in source and binary forms, with or without
20: * modification, are permitted provided that the following conditions
21: * are met:
22: * 1. Redistributions of source code must retain the above copyright
23: * notice, this list of conditions and the following disclaimer.
24: * 2. Redistributions in binary form must reproduce the above copyright
25: * notice, this list of conditions and the following disclaimer in the
26: * documentation and/or other materials provided with the distribution.
27: * 3. All advertising materials mentioning features or use of this software
28: * must display the following acknowledgement:
29: * This product includes software developed by the University of
30: * California, Berkeley and its contributors.
31: * 4. Neither the name of the University nor the names of its contributors
32: * may be used to endorse or promote products derived from this software
33: * without specific prior written permission.
34: *
35: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
36: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
38: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
39: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
40: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
41: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
42: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
43: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
44: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
45: * SUCH DAMAGE.
46: *
47: */
48:
49: #include "includes.h"
1.36 ! deraadt 50: RCSID("$OpenBSD: scp.c,v 1.35 2000/08/19 02:50:07 deraadt Exp $");
1.1 deraadt 51:
52: #include "ssh.h"
53: #include "xmalloc.h"
54: #include <utime.h>
55:
56: #define _PATH_CP "cp"
57:
1.11 aaron 58: /* For progressmeter() -- number of seconds before xfer considered "stalled" */
1.4 aaron 59: #define STALLTIME 5
60:
1.11 aaron 61: /* Visual statistics about files as they are transferred. */
62: void progressmeter(int);
63:
64: /* Returns width of the terminal (for progress meter calculations). */
65: int getttywidth(void);
1.35 deraadt 66: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
1.11 aaron 67:
68: /* Time a transfer started. */
1.4 aaron 69: static struct timeval start;
1.11 aaron 70:
71: /* Number of bytes of current file transferred so far. */
72: volatile unsigned long statbytes;
73:
74: /* Total size of current file. */
1.15 markus 75: off_t totalbytes = 0;
1.11 aaron 76:
77: /* Name of current file being transferred. */
78: char *curfile;
1.4 aaron 79:
1.23 markus 80: /* This is set to non-zero if IPv4 is desired. */
81: int IPv4 = 0;
82:
83: /* This is set to non-zero if IPv6 is desired. */
84: int IPv6 = 0;
85:
1.1 deraadt 86: /* This is set to non-zero to enable verbose mode. */
1.17 markus 87: int verbose_mode = 0;
1.1 deraadt 88:
89: /* This is set to non-zero if compression is desired. */
90: int compress = 0;
91:
1.6 aaron 92: /* This is set to zero if the progressmeter is not desired. */
93: int showprogress = 1;
94:
1.1 deraadt 95: /* This is set to non-zero if running in batch mode (that is, password
96: and passphrase queries are not allowed). */
97: int batchmode = 0;
98:
99: /* This is set to the cipher type string if given on the command line. */
100: char *cipher = NULL;
101:
1.18 markus 102: /* This is set to the RSA authentication identity file name if given on
1.1 deraadt 103: the command line. */
104: char *identity = NULL;
105:
106: /* This is the port to use in contacting the remote site (is non-NULL). */
107: char *port = NULL;
108:
1.34 deraadt 109: /* This is the program to execute for the secured connection. ("ssh" or -S) */
110: char *ssh_program = SSH_PROGRAM;
111:
1.20 markus 112: /*
113: * This function executes the given command as the specified user on the
114: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
115: * assigns the input and output file descriptors on success.
116: */
1.1 deraadt 117:
1.27 markus 118: int
1.35 deraadt 119: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
1.1 deraadt 120: {
1.18 markus 121: int pin[2], pout[2], reserved[2];
122:
123: if (verbose_mode)
124: fprintf(stderr, "Executing: host %s, user %s, command %s\n",
1.35 deraadt 125: host, remuser ? remuser : "(unspecified)", cmd);
1.18 markus 126:
1.20 markus 127: /*
128: * Reserve two descriptors so that the real pipes won't get
129: * descriptors 0 and 1 because that will screw up dup2 below.
130: */
1.18 markus 131: pipe(reserved);
132:
133: /* Create a socket pair for communicating with ssh. */
134: if (pipe(pin) < 0)
135: fatal("pipe: %s", strerror(errno));
136: if (pipe(pout) < 0)
137: fatal("pipe: %s", strerror(errno));
138:
139: /* Free the reserved descriptors. */
140: close(reserved[0]);
141: close(reserved[1]);
142:
143: /* For a child to execute the command on the remote host using ssh. */
144: if (fork() == 0) {
1.35 deraadt 145: char *args[100]; /* XXX careful */
1.18 markus 146: unsigned int i;
147:
148: /* Child. */
149: close(pin[1]);
150: close(pout[0]);
151: dup2(pin[0], 0);
152: dup2(pout[1], 1);
153: close(pin[0]);
154: close(pout[1]);
155:
156: i = 0;
1.34 deraadt 157: args[i++] = ssh_program;
1.18 markus 158: args[i++] = "-x";
159: args[i++] = "-oFallBackToRsh no";
1.23 markus 160: if (IPv4)
161: args[i++] = "-4";
162: if (IPv6)
163: args[i++] = "-6";
1.18 markus 164: if (verbose_mode)
165: args[i++] = "-v";
166: if (compress)
167: args[i++] = "-C";
168: if (batchmode)
169: args[i++] = "-oBatchMode yes";
170: if (cipher != NULL) {
171: args[i++] = "-c";
172: args[i++] = cipher;
173: }
174: if (identity != NULL) {
175: args[i++] = "-i";
176: args[i++] = identity;
177: }
178: if (port != NULL) {
179: args[i++] = "-p";
180: args[i++] = port;
181: }
182: if (remuser != NULL) {
183: args[i++] = "-l";
184: args[i++] = remuser;
185: }
186: args[i++] = host;
187: args[i++] = cmd;
188: args[i++] = NULL;
189:
1.34 deraadt 190: execvp(ssh_program, args);
191: perror(ssh_program);
1.18 markus 192: exit(1);
193: }
194: /* Parent. Close the other side, and return the local side. */
195: close(pin[0]);
196: *fdout = pin[1];
197: close(pout[1]);
198: *fdin = pout[0];
199: return 0;
200: }
1.1 deraadt 201:
1.27 markus 202: void
1.18 markus 203: fatal(const char *fmt,...)
204: {
205: va_list ap;
206: char buf[1024];
207:
208: va_start(ap, fmt);
209: vsnprintf(buf, sizeof(buf), fmt, ap);
210: va_end(ap);
211: fprintf(stderr, "%s\n", buf);
212: exit(255);
1.1 deraadt 213: }
214:
215: typedef struct {
216: int cnt;
217: char *buf;
218: } BUF;
219:
220: extern int iamremote;
221:
1.18 markus 222: BUF *allocbuf(BUF *, int, int);
223: char *colon(char *);
224: void lostconn(int);
225: void nospace(void);
226: int okname(char *);
227: void run_err(const char *,...);
228: void verifydir(char *);
1.1 deraadt 229:
230: struct passwd *pwd;
1.18 markus 231: uid_t userid;
1.1 deraadt 232: int errs, remin, remout;
233: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
234:
235: #define CMDNEEDS 64
236: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
237:
1.18 markus 238: int response(void);
239: void rsource(char *, struct stat *);
240: void sink(int, char *[]);
241: void source(int, char *[]);
242: void tolocal(int, char *[]);
243: void toremote(char *, int, char *[]);
244: void usage(void);
1.1 deraadt 245:
246: int
247: main(argc, argv)
248: int argc;
249: char *argv[];
250: {
251: int ch, fflag, tflag;
252: char *targ;
253: extern char *optarg;
254: extern int optind;
255:
256: fflag = tflag = 0;
1.34 deraadt 257: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S")) != EOF)
1.18 markus 258: switch (ch) {
259: /* User-visible flags. */
1.23 markus 260: case '4':
1.27 markus 261: IPv4 = 1;
1.23 markus 262: break;
263: case '6':
1.27 markus 264: IPv6 = 1;
1.23 markus 265: break;
1.1 deraadt 266: case 'p':
267: pflag = 1;
268: break;
269: case 'P':
1.18 markus 270: port = optarg;
271: break;
1.1 deraadt 272: case 'r':
273: iamrecursive = 1;
274: break;
1.34 deraadt 275: case 'S':
276: ssh_program = optarg;
277: break;
278:
1.18 markus 279: /* Server options. */
1.1 deraadt 280: case 'd':
281: targetshouldbedirectory = 1;
282: break;
1.18 markus 283: case 'f': /* "from" */
1.1 deraadt 284: iamremote = 1;
285: fflag = 1;
286: break;
1.18 markus 287: case 't': /* "to" */
1.1 deraadt 288: iamremote = 1;
289: tflag = 1;
290: break;
291: case 'c':
292: cipher = optarg;
1.18 markus 293: break;
1.1 deraadt 294: case 'i':
1.18 markus 295: identity = optarg;
1.1 deraadt 296: break;
297: case 'v':
1.17 markus 298: verbose_mode = 1;
1.18 markus 299: break;
1.1 deraadt 300: case 'B':
1.18 markus 301: batchmode = 1;
302: break;
1.1 deraadt 303: case 'C':
1.18 markus 304: compress = 1;
305: break;
1.6 aaron 306: case 'q':
1.18 markus 307: showprogress = 0;
308: break;
1.1 deraadt 309: case '?':
310: default:
311: usage();
312: }
313: argc -= optind;
314: argv += optind;
315:
316: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 317: fatal("unknown user %d", (int) userid);
1.1 deraadt 318:
1.18 markus 319: if (!isatty(STDERR_FILENO))
1.7 deraadt 320: showprogress = 0;
321:
1.1 deraadt 322: remin = STDIN_FILENO;
323: remout = STDOUT_FILENO;
324:
1.18 markus 325: if (fflag) {
326: /* Follow "protocol", send data. */
327: (void) response();
1.1 deraadt 328: source(argc, argv);
329: exit(errs != 0);
330: }
1.18 markus 331: if (tflag) {
332: /* Receive data. */
1.1 deraadt 333: sink(argc, argv);
334: exit(errs != 0);
335: }
336: if (argc < 2)
337: usage();
338: if (argc > 2)
339: targetshouldbedirectory = 1;
340:
341: remin = remout = -1;
342: /* Command to be executed on remote system using "ssh". */
1.18 markus 343: (void) sprintf(cmd, "scp%s%s%s%s", verbose_mode ? " -v" : "",
1.35 deraadt 344: iamrecursive ? " -r" : "", pflag ? " -p" : "",
345: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 346:
1.18 markus 347: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 348:
349: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
350: toremote(targ, argc, argv);
351: else {
1.18 markus 352: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 353: if (targetshouldbedirectory)
354: verifydir(argv[argc - 1]);
355: }
356: exit(errs != 0);
357: }
358:
1.23 markus 359: char *
360: cleanhostname(host)
361: char *host;
362: {
363: if (*host == '[' && host[strlen(host) - 1] == ']') {
364: host[strlen(host) - 1] = '\0';
365: return (host + 1);
366: } else
367: return host;
368: }
369:
1.1 deraadt 370: void
371: toremote(targ, argc, argv)
372: char *targ, *argv[];
373: int argc;
374: {
375: int i, len;
376: char *bp, *host, *src, *suser, *thost, *tuser;
377:
378: *targ++ = 0;
379: if (*targ == 0)
380: targ = ".";
381:
382: if ((thost = strchr(argv[argc - 1], '@'))) {
383: /* user@host */
384: *thost++ = 0;
385: tuser = argv[argc - 1];
386: if (*tuser == '\0')
387: tuser = NULL;
388: else if (!okname(tuser))
389: exit(1);
390: } else {
391: thost = argv[argc - 1];
392: tuser = NULL;
393: }
394:
395: for (i = 0; i < argc - 1; i++) {
396: src = colon(argv[i]);
1.18 markus 397: if (src) { /* remote to remote */
1.1 deraadt 398: *src++ = 0;
399: if (*src == 0)
400: src = ".";
401: host = strchr(argv[i], '@');
1.34 deraadt 402: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 403: strlen(src) + (tuser ? strlen(tuser) : 0) +
404: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 405: bp = xmalloc(len);
1.1 deraadt 406: if (host) {
407: *host++ = 0;
1.23 markus 408: host = cleanhostname(host);
1.1 deraadt 409: suser = argv[i];
410: if (*suser == '\0')
411: suser = pwd->pw_name;
412: else if (!okname(suser))
413: continue;
1.18 markus 414: (void) sprintf(bp,
1.34 deraadt 415: "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'",
416: ssh_program, verbose_mode ? " -v" : "",
417: suser, host, cmd, src,
418: tuser ? tuser : "", tuser ? "@" : "",
419: thost, targ);
1.23 markus 420: } else {
421: host = cleanhostname(argv[i]);
1.18 markus 422: (void) sprintf(bp,
1.34 deraadt 423: "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'",
424: ssh_program, verbose_mode ? " -v" : "",
425: host, cmd, src,
426: tuser ? tuser : "", tuser ? "@" : "",
427: thost, targ);
1.23 markus 428: }
1.18 markus 429: if (verbose_mode)
430: fprintf(stderr, "Executing: %s\n", bp);
431: (void) system(bp);
432: (void) xfree(bp);
433: } else { /* local to remote */
1.1 deraadt 434: if (remin == -1) {
435: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 436: bp = xmalloc(len);
437: (void) sprintf(bp, "%s -t %s", cmd, targ);
1.23 markus 438: host = cleanhostname(thost);
1.35 deraadt 439: if (do_cmd(host, tuser, bp, &remin,
440: &remout, argc) < 0)
1.18 markus 441: exit(1);
1.1 deraadt 442: if (response() < 0)
443: exit(1);
1.18 markus 444: (void) xfree(bp);
1.1 deraadt 445: }
1.18 markus 446: source(1, argv + i);
1.1 deraadt 447: }
448: }
449: }
450:
451: void
452: tolocal(argc, argv)
453: int argc;
454: char *argv[];
455: {
456: int i, len;
457: char *bp, *host, *src, *suser;
458:
459: for (i = 0; i < argc - 1; i++) {
1.18 markus 460: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 461: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 462: strlen(argv[argc - 1]) + 20;
1.1 deraadt 463: bp = xmalloc(len);
1.18 markus 464: (void) sprintf(bp, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 465: iamrecursive ? " -r" : "", pflag ? " -p" : "",
466: argv[i], argv[argc - 1]);
1.18 markus 467: if (verbose_mode)
468: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 469: if (system(bp))
470: ++errs;
1.18 markus 471: (void) xfree(bp);
1.1 deraadt 472: continue;
473: }
474: *src++ = 0;
475: if (*src == 0)
476: src = ".";
477: if ((host = strchr(argv[i], '@')) == NULL) {
478: host = argv[i];
479: suser = NULL;
480: } else {
481: *host++ = 0;
482: suser = argv[i];
483: if (*suser == '\0')
484: suser = pwd->pw_name;
485: else if (!okname(suser))
486: continue;
487: }
1.23 markus 488: host = cleanhostname(host);
1.1 deraadt 489: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 490: bp = xmalloc(len);
491: (void) sprintf(bp, "%s -f %s", cmd, src);
1.35 deraadt 492: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 493: (void) xfree(bp);
494: ++errs;
495: continue;
1.1 deraadt 496: }
1.18 markus 497: xfree(bp);
1.1 deraadt 498: sink(1, argv + argc - 1);
1.18 markus 499: (void) close(remin);
1.1 deraadt 500: remin = remout = -1;
501: }
502: }
503:
504: void
505: source(argc, argv)
506: int argc;
507: char *argv[];
508: {
509: struct stat stb;
510: static BUF buffer;
511: BUF *bp;
512: off_t i;
513: int amt, fd, haderr, indx, result;
514: char *last, *name, buf[2048];
515:
516: for (indx = 0; indx < argc; ++indx) {
1.18 markus 517: name = argv[indx];
1.11 aaron 518: statbytes = 0;
1.1 deraadt 519: if ((fd = open(name, O_RDONLY, 0)) < 0)
520: goto syserr;
521: if (fstat(fd, &stb) < 0) {
522: syserr: run_err("%s: %s", name, strerror(errno));
523: goto next;
524: }
525: switch (stb.st_mode & S_IFMT) {
526: case S_IFREG:
527: break;
528: case S_IFDIR:
529: if (iamrecursive) {
530: rsource(name, &stb);
531: goto next;
532: }
533: /* FALLTHROUGH */
534: default:
535: run_err("%s: not a regular file", name);
536: goto next;
537: }
538: if ((last = strrchr(name, '/')) == NULL)
539: last = name;
540: else
541: ++last;
1.11 aaron 542: curfile = last;
1.1 deraadt 543: if (pflag) {
544: /*
545: * Make it compatible with possible future
546: * versions expecting microseconds.
547: */
1.18 markus 548: (void) sprintf(buf, "T%lu 0 %lu 0\n",
1.35 deraadt 549: (unsigned long) stb.st_mtime,
550: (unsigned long) stb.st_atime);
1.29 deraadt 551: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 552: if (response() < 0)
553: goto next;
554: }
555: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.18 markus 556: (void) sprintf(buf, "C%04o %lu %s\n",
557: (unsigned int) (stb.st_mode & FILEMODEMASK),
558: (unsigned long) stb.st_size,
559: last);
560: if (verbose_mode) {
561: fprintf(stderr, "Sending file modes: %s", buf);
562: fflush(stderr);
563: }
1.29 deraadt 564: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 565: if (response() < 0)
566: goto next;
567: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 568: next: (void) close(fd);
1.1 deraadt 569: continue;
570: }
1.12 aaron 571: if (showprogress) {
572: totalbytes = stb.st_size;
1.6 aaron 573: progressmeter(-1);
1.12 aaron 574: }
1.1 deraadt 575: /* Keep writing after an error so that we stay sync'd up. */
576: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
577: amt = bp->cnt;
578: if (i + amt > stb.st_size)
579: amt = stb.st_size - i;
580: if (!haderr) {
1.30 deraadt 581: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 582: if (result != amt)
583: haderr = result >= 0 ? EIO : errno;
584: }
585: if (haderr)
1.29 deraadt 586: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 587: else {
1.29 deraadt 588: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 589: if (result != amt)
590: haderr = result >= 0 ? EIO : errno;
1.4 aaron 591: statbytes += result;
1.1 deraadt 592: }
593: }
1.18 markus 594: if (showprogress)
1.6 aaron 595: progressmeter(1);
1.4 aaron 596:
1.1 deraadt 597: if (close(fd) < 0 && !haderr)
598: haderr = errno;
599: if (!haderr)
1.29 deraadt 600: (void) atomicio(write, remout, "", 1);
1.1 deraadt 601: else
602: run_err("%s: %s", name, strerror(haderr));
1.18 markus 603: (void) response();
1.1 deraadt 604: }
605: }
606:
607: void
608: rsource(name, statp)
609: char *name;
610: struct stat *statp;
611: {
612: DIR *dirp;
613: struct dirent *dp;
614: char *last, *vect[1], path[1100];
615:
616: if (!(dirp = opendir(name))) {
617: run_err("%s: %s", name, strerror(errno));
618: return;
619: }
620: last = strrchr(name, '/');
621: if (last == 0)
622: last = name;
623: else
624: last++;
625: if (pflag) {
1.18 markus 626: (void) sprintf(path, "T%lu 0 %lu 0\n",
1.35 deraadt 627: (unsigned long) statp->st_mtime,
628: (unsigned long) statp->st_atime);
1.29 deraadt 629: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 630: if (response() < 0) {
631: closedir(dirp);
632: return;
633: }
634: }
1.18 markus 635: (void) sprintf(path, "D%04o %d %.1024s\n",
1.35 deraadt 636: (unsigned int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 637: if (verbose_mode)
638: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 639: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 640: if (response() < 0) {
641: closedir(dirp);
642: return;
643: }
644: while ((dp = readdir(dirp))) {
645: if (dp->d_ino == 0)
646: continue;
647: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
648: continue;
649: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
650: run_err("%s/%s: name too long", name, dp->d_name);
651: continue;
652: }
1.18 markus 653: (void) sprintf(path, "%s/%s", name, dp->d_name);
1.1 deraadt 654: vect[0] = path;
655: source(1, vect);
656: }
1.18 markus 657: (void) closedir(dirp);
1.29 deraadt 658: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 659: (void) response();
1.1 deraadt 660: }
661:
662: void
663: sink(argc, argv)
664: int argc;
665: char *argv[];
666: {
667: static BUF buffer;
668: struct stat stb;
1.18 markus 669: enum {
670: YES, NO, DISPLAYED
671: } wrerr;
1.1 deraadt 672: BUF *bp;
673: off_t i, j;
674: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 ! deraadt 675: off_t size;
! 676: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 677: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.18 markus 678: struct utimbuf ut;
679: int dummy_usec;
1.1 deraadt 680:
681: #define SCREWUP(str) { why = str; goto screwup; }
682:
683: setimes = targisdir = 0;
684: mask = umask(0);
685: if (!pflag)
1.18 markus 686: (void) umask(mask);
1.1 deraadt 687: if (argc != 1) {
688: run_err("ambiguous target");
689: exit(1);
690: }
691: targ = *argv;
692: if (targetshouldbedirectory)
693: verifydir(targ);
1.18 markus 694:
1.29 deraadt 695: (void) atomicio(write, remout, "", 1);
1.1 deraadt 696: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
697: targisdir = 1;
698: for (first = 1;; first = 0) {
699: cp = buf;
1.30 deraadt 700: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 701: return;
702: if (*cp++ == '\n')
703: SCREWUP("unexpected <newline>");
704: do {
1.30 deraadt 705: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 706: SCREWUP("lost connection");
707: *cp++ = ch;
708: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
709: *cp = 0;
710:
711: if (buf[0] == '\01' || buf[0] == '\02') {
712: if (iamremote == 0)
1.29 deraadt 713: (void) atomicio(write, STDERR_FILENO,
1.18 markus 714: buf + 1, strlen(buf + 1));
1.1 deraadt 715: if (buf[0] == '\02')
716: exit(1);
717: ++errs;
718: continue;
719: }
720: if (buf[0] == 'E') {
1.29 deraadt 721: (void) atomicio(write, remout, "", 1);
1.1 deraadt 722: return;
723: }
724: if (ch == '\n')
725: *--cp = 0;
726:
727: #define getnum(t) (t) = 0; \
728: while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
729: cp = buf;
730: if (*cp == 'T') {
731: setimes++;
732: cp++;
733: getnum(ut.modtime);
734: if (*cp++ != ' ')
735: SCREWUP("mtime.sec not delimited");
736: getnum(dummy_usec);
737: if (*cp++ != ' ')
738: SCREWUP("mtime.usec not delimited");
739: getnum(ut.actime);
740: if (*cp++ != ' ')
741: SCREWUP("atime.sec not delimited");
742: getnum(dummy_usec);
743: if (*cp++ != '\0')
744: SCREWUP("atime.usec not delimited");
1.29 deraadt 745: (void) atomicio(write, remout, "", 1);
1.1 deraadt 746: continue;
747: }
748: if (*cp != 'C' && *cp != 'D') {
749: /*
750: * Check for the case "rcp remote:foo\* local:bar".
751: * In this case, the line "No match." can be returned
752: * by the shell before the rcp command on the remote is
753: * executed so the ^Aerror_message convention isn't
754: * followed.
755: */
756: if (first) {
757: run_err("%s", cp);
758: exit(1);
759: }
760: SCREWUP("expected control record");
761: }
762: mode = 0;
763: for (++cp; cp < buf + 5; cp++) {
764: if (*cp < '0' || *cp > '7')
765: SCREWUP("bad mode");
766: mode = (mode << 3) | (*cp - '0');
767: }
768: if (*cp++ != ' ')
769: SCREWUP("mode not delimited");
770:
1.18 markus 771: for (size = 0; *cp >= '0' && *cp <= '9';)
1.1 deraadt 772: size = size * 10 + (*cp++ - '0');
773: if (*cp++ != ' ')
774: SCREWUP("size not delimited");
775: if (targisdir) {
776: static char *namebuf;
777: static int cursize;
778: size_t need;
779:
780: need = strlen(targ) + strlen(cp) + 250;
781: if (need > cursize)
1.18 markus 782: namebuf = xmalloc(need);
783: (void) sprintf(namebuf, "%s%s%s", targ,
1.35 deraadt 784: *targ ? "/" : "", cp);
1.1 deraadt 785: np = namebuf;
786: } else
787: np = targ;
1.12 aaron 788: curfile = cp;
1.1 deraadt 789: exists = stat(np, &stb) == 0;
790: if (buf[0] == 'D') {
791: int mod_flag = pflag;
792: if (exists) {
793: if (!S_ISDIR(stb.st_mode)) {
794: errno = ENOTDIR;
795: goto bad;
796: }
797: if (pflag)
1.18 markus 798: (void) chmod(np, mode);
1.1 deraadt 799: } else {
1.18 markus 800: /* Handle copying from a read-only
801: directory */
1.1 deraadt 802: mod_flag = 1;
803: if (mkdir(np, mode | S_IRWXU) < 0)
804: goto bad;
805: }
806: vect[0] = np;
807: sink(1, vect);
808: if (setimes) {
809: setimes = 0;
810: if (utime(np, &ut) < 0)
1.18 markus 811: run_err("%s: set times: %s",
812: np, strerror(errno));
1.1 deraadt 813: }
814: if (mod_flag)
1.18 markus 815: (void) chmod(np, mode);
1.1 deraadt 816: continue;
817: }
818: omode = mode;
819: mode |= S_IWRITE;
1.18 markus 820: if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) {
1.1 deraadt 821: bad: run_err("%s: %s", np, strerror(errno));
822: continue;
823: }
1.29 deraadt 824: (void) atomicio(write, remout, "", 1);
1.1 deraadt 825: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 826: (void) close(ofd);
1.1 deraadt 827: continue;
828: }
829: cp = bp->buf;
830: wrerr = NO;
1.7 deraadt 831:
832: if (showprogress) {
833: totalbytes = size;
834: progressmeter(-1);
835: }
1.12 aaron 836: statbytes = 0;
1.1 deraadt 837: for (count = i = 0; i < size; i += 4096) {
838: amt = 4096;
839: if (i + amt > size)
840: amt = size - i;
841: count += amt;
842: do {
1.30 deraadt 843: j = atomicio(read, remin, cp, amt);
1.1 deraadt 844: if (j <= 0) {
845: run_err("%s", j ? strerror(errno) :
1.18 markus 846: "dropped connection");
1.1 deraadt 847: exit(1);
848: }
849: amt -= j;
850: cp += j;
1.18 markus 851: statbytes += j;
1.1 deraadt 852: } while (amt > 0);
853: if (count == bp->cnt) {
854: /* Keep reading so we stay sync'd up. */
855: if (wrerr == NO) {
1.30 deraadt 856: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 857: if (j != count) {
858: wrerr = YES;
1.18 markus 859: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 860: }
861: }
862: count = 0;
863: cp = bp->buf;
864: }
865: }
1.7 deraadt 866: if (showprogress)
867: progressmeter(1);
1.1 deraadt 868: if (count != 0 && wrerr == NO &&
1.30 deraadt 869: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 870: wrerr = YES;
1.18 markus 871: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 872: }
873: #if 0
874: if (ftruncate(ofd, size)) {
875: run_err("%s: truncate: %s", np, strerror(errno));
876: wrerr = DISPLAYED;
877: }
878: #endif
879: if (pflag) {
880: if (exists || omode != mode)
881: if (fchmod(ofd, omode))
882: run_err("%s: set mode: %s",
1.18 markus 883: np, strerror(errno));
1.1 deraadt 884: } else {
885: if (!exists && omode != mode)
886: if (fchmod(ofd, omode & ~mask))
887: run_err("%s: set mode: %s",
1.18 markus 888: np, strerror(errno));
1.1 deraadt 889: }
1.33 provos 890: if (close(ofd) == -1) {
891: wrerr = YES;
892: wrerrno = errno;
893: }
1.18 markus 894: (void) response();
1.1 deraadt 895: if (setimes && wrerr == NO) {
896: setimes = 0;
897: if (utime(np, &ut) < 0) {
898: run_err("%s: set times: %s",
1.18 markus 899: np, strerror(errno));
1.1 deraadt 900: wrerr = DISPLAYED;
901: }
902: }
1.18 markus 903: switch (wrerr) {
1.1 deraadt 904: case YES:
905: run_err("%s: %s", np, strerror(wrerrno));
906: break;
907: case NO:
1.29 deraadt 908: (void) atomicio(write, remout, "", 1);
1.1 deraadt 909: break;
910: case DISPLAYED:
911: break;
912: }
913: }
914: screwup:
915: run_err("protocol error: %s", why);
916: exit(1);
917: }
918:
919: int
920: response()
921: {
922: char ch, *cp, resp, rbuf[2048];
923:
1.30 deraadt 924: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 925: lostconn(0);
926:
927: cp = rbuf;
1.18 markus 928: switch (resp) {
929: case 0: /* ok */
1.1 deraadt 930: return (0);
931: default:
932: *cp++ = resp;
933: /* FALLTHROUGH */
1.18 markus 934: case 1: /* error, followed by error msg */
935: case 2: /* fatal error, "" */
1.1 deraadt 936: do {
1.30 deraadt 937: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 938: lostconn(0);
939: *cp++ = ch;
940: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
941:
942: if (!iamremote)
1.29 deraadt 943: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 944: ++errs;
945: if (resp == 1)
946: return (-1);
947: exit(1);
948: }
949: /* NOTREACHED */
950: }
951:
952: void
953: usage()
954: {
1.34 deraadt 955: (void) fprintf(stderr, "usage: scp "
956: "[-pqrvC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2; or:\n"
957: " scp [options] f1 ... fn directory\n");
1.1 deraadt 958: exit(1);
959: }
960:
961: void
1.18 markus 962: run_err(const char *fmt,...)
1.1 deraadt 963: {
964: static FILE *fp;
965: va_list ap;
966: va_start(ap, fmt);
967:
968: ++errs;
969: if (fp == NULL && !(fp = fdopen(remout, "w")))
970: return;
1.18 markus 971: (void) fprintf(fp, "%c", 0x01);
972: (void) fprintf(fp, "scp: ");
973: (void) vfprintf(fp, fmt, ap);
974: (void) fprintf(fp, "\n");
975: (void) fflush(fp);
976:
977: if (!iamremote) {
978: vfprintf(stderr, fmt, ap);
979: fprintf(stderr, "\n");
980: }
1.1 deraadt 981: va_end(ap);
982: }
983:
984: char *
985: colon(cp)
986: char *cp;
987: {
1.23 markus 988: int flag = 0;
989:
1.1 deraadt 990: if (*cp == ':') /* Leading colon is part of file name. */
991: return (0);
1.23 markus 992: if (*cp == '[')
993: flag = 1;
1.1 deraadt 994:
995: for (; *cp; ++cp) {
1.23 markus 996: if (*cp == '@' && *(cp+1) == '[')
997: flag = 1;
998: if (*cp == ']' && *(cp+1) == ':' && flag)
999: return (cp+1);
1000: if (*cp == ':' && !flag)
1.1 deraadt 1001: return (cp);
1002: if (*cp == '/')
1003: return (0);
1004: }
1005: return (0);
1006: }
1007:
1008: void
1009: verifydir(cp)
1010: char *cp;
1011: {
1012: struct stat stb;
1013:
1014: if (!stat(cp, &stb)) {
1015: if (S_ISDIR(stb.st_mode))
1016: return;
1017: errno = ENOTDIR;
1018: }
1019: run_err("%s: %s", cp, strerror(errno));
1020: exit(1);
1021: }
1022:
1023: int
1024: okname(cp0)
1025: char *cp0;
1026: {
1027: int c;
1028: char *cp;
1029:
1030: cp = cp0;
1031: do {
1032: c = *cp;
1033: if (c & 0200)
1034: goto bad;
1.25 markus 1035: if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-' && c != '.')
1.1 deraadt 1036: goto bad;
1037: } while (*++cp);
1038: return (1);
1039:
1.25 markus 1040: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1041: return (0);
1042: }
1043:
1044: BUF *
1045: allocbuf(bp, fd, blksize)
1046: BUF *bp;
1047: int fd, blksize;
1048: {
1049: size_t size;
1050: struct stat stb;
1051:
1052: if (fstat(fd, &stb) < 0) {
1053: run_err("fstat: %s", strerror(errno));
1054: return (0);
1055: }
1.18 markus 1056: if (stb.st_blksize == 0)
1057: size = blksize;
1058: else
1059: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1060: stb.st_blksize;
1.1 deraadt 1061: if (bp->cnt >= size)
1062: return (bp);
1.18 markus 1063: if (bp->buf == NULL)
1064: bp->buf = xmalloc(size);
1065: else
1066: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1067: bp->cnt = size;
1068: return (bp);
1069: }
1070:
1071: void
1072: lostconn(signo)
1073: int signo;
1074: {
1075: if (!iamremote)
1076: fprintf(stderr, "lost connection\n");
1077: exit(1);
1078: }
1.4 aaron 1079:
1.10 deraadt 1080:
1.8 deraadt 1081: void
1082: alarmtimer(int wait)
1.4 aaron 1083: {
1.18 markus 1084: struct itimerval itv;
1.4 aaron 1085:
1.18 markus 1086: itv.it_value.tv_sec = wait;
1087: itv.it_value.tv_usec = 0;
1088: itv.it_interval = itv.it_value;
1089: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1090: }
1091:
1.8 deraadt 1092: void
1.26 markus 1093: updateprogressmeter(int ignore)
1.4 aaron 1094: {
1.9 deraadt 1095: int save_errno = errno;
1096:
1.4 aaron 1097: progressmeter(0);
1.9 deraadt 1098: errno = save_errno;
1.4 aaron 1099: }
1100:
1.16 deraadt 1101: int
1102: foregroundproc()
1103: {
1104: static pid_t pgrp = -1;
1105: int ctty_pgrp;
1106:
1107: if (pgrp == -1)
1108: pgrp = getpgrp();
1109:
1.18 markus 1110: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1111: ctty_pgrp == pgrp));
1.16 deraadt 1112: }
1113:
1.8 deraadt 1114: void
1115: progressmeter(int flag)
1.4 aaron 1116: {
1117: static const char prefixes[] = " KMGTP";
1118: static struct timeval lastupdate;
1.11 aaron 1119: static off_t lastsize;
1.4 aaron 1120: struct timeval now, td, wait;
1121: off_t cursize, abbrevsize;
1122: double elapsed;
1123: int ratio, barlength, i, remaining;
1124: char buf[256];
1125:
1126: if (flag == -1) {
1.18 markus 1127: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1128: lastupdate = start;
1.11 aaron 1129: lastsize = 0;
1.18 markus 1130: }
1.16 deraadt 1131: if (foregroundproc() == 0)
1132: return;
1133:
1.18 markus 1134: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1135: cursize = statbytes;
1.13 aaron 1136: if (totalbytes != 0) {
1.21 markus 1137: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1138: ratio = MAX(ratio, 0);
1139: ratio = MIN(ratio, 100);
1.18 markus 1140: } else
1.13 aaron 1141: ratio = 100;
1142:
1.18 markus 1143: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1144:
1.11 aaron 1145: barlength = getttywidth() - 51;
1.4 aaron 1146: if (barlength > 0) {
1147: i = barlength * ratio / 100;
1148: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1149: "|%.*s%*s|", i,
1150: "*****************************************************************************"
1151: "*****************************************************************************",
1152: barlength - i, "");
1.4 aaron 1153: }
1154: i = 0;
1155: abbrevsize = cursize;
1156: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1157: i++;
1158: abbrevsize >>= 10;
1159: }
1160: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ",
1.18 markus 1161: (quad_t) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' :
1162: 'B');
1.4 aaron 1163:
1164: timersub(&now, &lastupdate, &wait);
1165: if (cursize > lastsize) {
1166: lastupdate = now;
1167: lastsize = cursize;
1168: if (wait.tv_sec >= STALLTIME) {
1169: start.tv_sec += wait.tv_sec;
1170: start.tv_usec += wait.tv_usec;
1171: }
1172: wait.tv_sec = 0;
1173: }
1174: timersub(&now, &start, &td);
1.6 aaron 1175: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1176:
1177: if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes) {
1178: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1179: " --:-- ETA");
1.4 aaron 1180: } else if (wait.tv_sec >= STALLTIME) {
1181: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1182: " - stalled -");
1.4 aaron 1183: } else {
1.28 deraadt 1184: if (flag != 1)
1185: remaining =
1186: (int)(totalbytes / (statbytes / elapsed) - elapsed);
1187: else
1188: remaining = elapsed;
1189:
1.14 aaron 1190: i = remaining / 3600;
1.4 aaron 1191: if (i)
1192: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1193: "%2d:", i);
1.4 aaron 1194: else
1195: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1196: " ");
1.4 aaron 1197: i = remaining % 3600;
1198: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1199: "%02d:%02d%s", i / 60, i % 60,
1200: (flag != 1) ? " ETA" : " ");
1.4 aaron 1201: }
1.10 deraadt 1202: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1203:
1204: if (flag == -1) {
1.26 markus 1205: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1206: alarmtimer(1);
1207: } else if (flag == 1) {
1.10 deraadt 1208: alarmtimer(0);
1.29 deraadt 1209: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1210: statbytes = 0;
1.4 aaron 1211: }
1212: }
1213:
1.8 deraadt 1214: int
1215: getttywidth(void)
1.4 aaron 1216: {
1217: struct winsize winsize;
1218:
1219: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1220: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1221: else
1.18 markus 1222: return (80);
1.4 aaron 1223: }
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