Annotation of src/usr.bin/ssh/scp.c, Revision 1.45
1.1 deraadt 1: /*
1.38 deraadt 2: * scp - secure remote copy. This is basically patched BSD rcp which
3: * uses ssh to do the data transfer (instead of using rcmd).
1.27 markus 4: *
1.38 deraadt 5: * NOTE: This version should NOT be suid root. (This uses ssh to
6: * do the transfer and ssh has the necessary privileges.)
1.27 markus 7: *
1.38 deraadt 8: * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
9: *
10: * As far as I am concerned, the code I have written for this software
11: * can be used freely for any purpose. Any derived versions of this
12: * software must be clearly marked as such, and if the derived work is
13: * incompatible with the protocol description in the RFC file, it must be
14: * called by a name other than "ssh" or "Secure Shell".
1.39 markus 15: */
1.38 deraadt 16: /*
17: * Copyright (c) 1999 Theo de Raadt. All rights reserved.
18: * Copyright (c) 1999 Aaron Campbell. All rights reserved.
1.27 markus 19: *
1.38 deraadt 20: * Redistribution and use in source and binary forms, with or without
21: * modification, are permitted provided that the following conditions
22: * are met:
23: * 1. Redistributions of source code must retain the above copyright
24: * notice, this list of conditions and the following disclaimer.
25: * 2. Redistributions in binary form must reproduce the above copyright
26: * notice, this list of conditions and the following disclaimer in the
27: * documentation and/or other materials provided with the distribution.
1.27 markus 28: *
1.38 deraadt 29: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
30: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
32: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
33: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
34: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
38: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39: */
1.1 deraadt 40:
41: /*
1.35 deraadt 42: * Parts from:
43: *
1.1 deraadt 44: * Copyright (c) 1983, 1990, 1992, 1993, 1995
45: * The Regents of the University of California. All rights reserved.
46: *
47: * Redistribution and use in source and binary forms, with or without
48: * modification, are permitted provided that the following conditions
49: * are met:
50: * 1. Redistributions of source code must retain the above copyright
51: * notice, this list of conditions and the following disclaimer.
52: * 2. Redistributions in binary form must reproduce the above copyright
53: * notice, this list of conditions and the following disclaimer in the
54: * documentation and/or other materials provided with the distribution.
55: * 3. All advertising materials mentioning features or use of this software
56: * must display the following acknowledgement:
57: * This product includes software developed by the University of
58: * California, Berkeley and its contributors.
59: * 4. Neither the name of the University nor the names of its contributors
60: * may be used to endorse or promote products derived from this software
61: * without specific prior written permission.
62: *
63: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
64: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
65: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
66: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
67: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
68: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
69: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
70: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
71: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
72: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73: * SUCH DAMAGE.
74: *
75: */
76:
77: #include "includes.h"
1.45 ! markus 78: RCSID("$OpenBSD: scp.c,v 1.44 2000/12/11 17:27:33 deraadt Exp $");
1.1 deraadt 79:
80: #include "ssh.h"
81: #include "xmalloc.h"
82:
83: #define _PATH_CP "cp"
84:
1.11 aaron 85: /* For progressmeter() -- number of seconds before xfer considered "stalled" */
1.4 aaron 86: #define STALLTIME 5
87:
1.11 aaron 88: /* Visual statistics about files as they are transferred. */
89: void progressmeter(int);
90:
91: /* Returns width of the terminal (for progress meter calculations). */
92: int getttywidth(void);
1.35 deraadt 93: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
1.11 aaron 94:
1.41 markus 95: /* setup arguments for the call to ssh */
96: void addargs(char *fmt, ...) __attribute__((format(printf, 1, 2)));
97:
1.11 aaron 98: /* Time a transfer started. */
1.4 aaron 99: static struct timeval start;
1.11 aaron 100:
101: /* Number of bytes of current file transferred so far. */
102: volatile unsigned long statbytes;
103:
104: /* Total size of current file. */
1.15 markus 105: off_t totalbytes = 0;
1.11 aaron 106:
107: /* Name of current file being transferred. */
108: char *curfile;
1.4 aaron 109:
1.1 deraadt 110: /* This is set to non-zero to enable verbose mode. */
1.17 markus 111: int verbose_mode = 0;
1.1 deraadt 112:
1.6 aaron 113: /* This is set to zero if the progressmeter is not desired. */
114: int showprogress = 1;
115:
1.34 deraadt 116: /* This is the program to execute for the secured connection. ("ssh" or -S) */
117: char *ssh_program = SSH_PROGRAM;
118:
1.41 markus 119: /* This is the list of arguments that scp passes to ssh */
120: struct {
121: char **list;
122: int num;
123: int nalloc;
124: } args;
125:
1.20 markus 126: /*
127: * This function executes the given command as the specified user on the
128: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
129: * assigns the input and output file descriptors on success.
130: */
1.1 deraadt 131:
1.27 markus 132: int
1.35 deraadt 133: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
1.1 deraadt 134: {
1.18 markus 135: int pin[2], pout[2], reserved[2];
136:
137: if (verbose_mode)
1.41 markus 138: fprintf(stderr, "Executing: program %s host %s, user %s, command %s\n",
139: ssh_program, host, remuser ? remuser : "(unspecified)", cmd);
1.18 markus 140:
1.20 markus 141: /*
142: * Reserve two descriptors so that the real pipes won't get
143: * descriptors 0 and 1 because that will screw up dup2 below.
144: */
1.18 markus 145: pipe(reserved);
146:
147: /* Create a socket pair for communicating with ssh. */
148: if (pipe(pin) < 0)
149: fatal("pipe: %s", strerror(errno));
150: if (pipe(pout) < 0)
151: fatal("pipe: %s", strerror(errno));
152:
153: /* Free the reserved descriptors. */
154: close(reserved[0]);
155: close(reserved[1]);
156:
157: /* For a child to execute the command on the remote host using ssh. */
1.41 markus 158: if (fork() == 0) {
1.18 markus 159: /* Child. */
160: close(pin[1]);
161: close(pout[0]);
162: dup2(pin[0], 0);
163: dup2(pout[1], 1);
164: close(pin[0]);
165: close(pout[1]);
166:
1.41 markus 167: args.list[0] = ssh_program;
168: if (remuser != NULL)
1.42 markus 169: addargs("-l%s", remuser);
1.41 markus 170: addargs("%s", host);
171: addargs("%s", cmd);
1.18 markus 172:
1.41 markus 173: execvp(ssh_program, args.list);
1.34 deraadt 174: perror(ssh_program);
1.18 markus 175: exit(1);
176: }
177: /* Parent. Close the other side, and return the local side. */
178: close(pin[0]);
179: *fdout = pin[1];
180: close(pout[1]);
181: *fdin = pout[0];
182: return 0;
183: }
1.1 deraadt 184:
1.27 markus 185: void
1.18 markus 186: fatal(const char *fmt,...)
187: {
188: va_list ap;
189: char buf[1024];
190:
191: va_start(ap, fmt);
192: vsnprintf(buf, sizeof(buf), fmt, ap);
193: va_end(ap);
194: fprintf(stderr, "%s\n", buf);
195: exit(255);
1.1 deraadt 196: }
197:
198: typedef struct {
199: int cnt;
200: char *buf;
201: } BUF;
202:
203: extern int iamremote;
204:
1.18 markus 205: BUF *allocbuf(BUF *, int, int);
206: char *colon(char *);
207: void lostconn(int);
208: void nospace(void);
209: int okname(char *);
210: void run_err(const char *,...);
211: void verifydir(char *);
1.1 deraadt 212:
213: struct passwd *pwd;
1.18 markus 214: uid_t userid;
1.1 deraadt 215: int errs, remin, remout;
216: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
217:
218: #define CMDNEEDS 64
219: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
220:
1.18 markus 221: int response(void);
222: void rsource(char *, struct stat *);
223: void sink(int, char *[]);
224: void source(int, char *[]);
225: void tolocal(int, char *[]);
226: void toremote(char *, int, char *[]);
227: void usage(void);
1.1 deraadt 228:
229: int
230: main(argc, argv)
231: int argc;
232: char *argv[];
233: {
234: int ch, fflag, tflag;
235: char *targ;
236: extern char *optarg;
237: extern int optind;
238:
1.41 markus 239: args.list = NULL;
240: addargs("ssh"); /* overwritten with ssh_program */
241: addargs("-x");
242: addargs("-oFallBackToRsh no");
243:
1.1 deraadt 244: fflag = tflag = 0;
1.41 markus 245: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != EOF)
1.18 markus 246: switch (ch) {
247: /* User-visible flags. */
1.23 markus 248: case '4':
1.41 markus 249: case '6':
250: case 'C':
251: addargs("-%c", ch);
252: break;
253: case 'o':
254: case 'c':
255: case 'i':
1.42 markus 256: addargs("-%c%s", ch, optarg);
1.23 markus 257: break;
1.41 markus 258: case 'P':
1.42 markus 259: addargs("-p%s", optarg);
1.41 markus 260: break;
261: case 'B':
1.42 markus 262: addargs("-oBatchmode yes");
1.23 markus 263: break;
1.1 deraadt 264: case 'p':
265: pflag = 1;
266: break;
267: case 'r':
268: iamrecursive = 1;
269: break;
1.34 deraadt 270: case 'S':
1.41 markus 271: ssh_program = xstrdup(optarg);
272: break;
273: case 'v':
274: verbose_mode = 1;
275: break;
276: case 'q':
277: showprogress = 0;
1.34 deraadt 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 '?':
293: default:
294: usage();
295: }
296: argc -= optind;
297: argv += optind;
298:
299: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 300: fatal("unknown user %d", (int) userid);
1.1 deraadt 301:
1.18 markus 302: if (!isatty(STDERR_FILENO))
1.7 deraadt 303: showprogress = 0;
304:
1.1 deraadt 305: remin = STDIN_FILENO;
306: remout = STDOUT_FILENO;
307:
1.18 markus 308: if (fflag) {
309: /* Follow "protocol", send data. */
310: (void) response();
1.1 deraadt 311: source(argc, argv);
312: exit(errs != 0);
313: }
1.18 markus 314: if (tflag) {
315: /* Receive data. */
1.1 deraadt 316: sink(argc, argv);
317: exit(errs != 0);
318: }
319: if (argc < 2)
320: usage();
321: if (argc > 2)
322: targetshouldbedirectory = 1;
323:
324: remin = remout = -1;
325: /* Command to be executed on remote system using "ssh". */
1.18 markus 326: (void) sprintf(cmd, "scp%s%s%s%s", verbose_mode ? " -v" : "",
1.35 deraadt 327: iamrecursive ? " -r" : "", pflag ? " -p" : "",
328: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 329:
1.18 markus 330: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 331:
332: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
333: toremote(targ, argc, argv);
334: else {
1.18 markus 335: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 336: if (targetshouldbedirectory)
337: verifydir(argv[argc - 1]);
338: }
339: exit(errs != 0);
340: }
341:
1.23 markus 342: char *
343: cleanhostname(host)
344: char *host;
345: {
346: if (*host == '[' && host[strlen(host) - 1] == ']') {
347: host[strlen(host) - 1] = '\0';
348: return (host + 1);
349: } else
350: return host;
351: }
352:
1.1 deraadt 353: void
354: toremote(targ, argc, argv)
355: char *targ, *argv[];
356: int argc;
357: {
358: int i, len;
359: char *bp, *host, *src, *suser, *thost, *tuser;
360:
361: *targ++ = 0;
362: if (*targ == 0)
363: targ = ".";
364:
365: if ((thost = strchr(argv[argc - 1], '@'))) {
366: /* user@host */
367: *thost++ = 0;
368: tuser = argv[argc - 1];
369: if (*tuser == '\0')
370: tuser = NULL;
371: else if (!okname(tuser))
372: exit(1);
373: } else {
374: thost = argv[argc - 1];
375: tuser = NULL;
376: }
377:
378: for (i = 0; i < argc - 1; i++) {
379: src = colon(argv[i]);
1.18 markus 380: if (src) { /* remote to remote */
1.1 deraadt 381: *src++ = 0;
382: if (*src == 0)
383: src = ".";
384: host = strchr(argv[i], '@');
1.34 deraadt 385: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 386: strlen(src) + (tuser ? strlen(tuser) : 0) +
387: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 388: bp = xmalloc(len);
1.1 deraadt 389: if (host) {
390: *host++ = 0;
1.23 markus 391: host = cleanhostname(host);
1.1 deraadt 392: suser = argv[i];
393: if (*suser == '\0')
394: suser = pwd->pw_name;
395: else if (!okname(suser))
396: continue;
1.44 deraadt 397: sprintf(bp,
1.34 deraadt 398: "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 399: ssh_program, verbose_mode ? " -v" : "",
400: suser, host, cmd, src,
401: tuser ? tuser : "", tuser ? "@" : "",
402: thost, targ);
1.23 markus 403: } else {
404: host = cleanhostname(argv[i]);
1.44 deraadt 405: sprintf(bp,
1.34 deraadt 406: "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'",
1.44 deraadt 407: ssh_program, verbose_mode ? " -v" : "",
408: host, cmd, src,
409: tuser ? tuser : "", tuser ? "@" : "",
410: thost, targ);
1.23 markus 411: }
1.18 markus 412: if (verbose_mode)
413: fprintf(stderr, "Executing: %s\n", bp);
414: (void) system(bp);
415: (void) xfree(bp);
416: } else { /* local to remote */
1.1 deraadt 417: if (remin == -1) {
418: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 419: bp = xmalloc(len);
420: (void) sprintf(bp, "%s -t %s", cmd, targ);
1.23 markus 421: host = cleanhostname(thost);
1.35 deraadt 422: if (do_cmd(host, tuser, bp, &remin,
423: &remout, argc) < 0)
1.18 markus 424: exit(1);
1.1 deraadt 425: if (response() < 0)
426: exit(1);
1.18 markus 427: (void) xfree(bp);
1.1 deraadt 428: }
1.18 markus 429: source(1, argv + i);
1.1 deraadt 430: }
431: }
432: }
433:
434: void
435: tolocal(argc, argv)
436: int argc;
437: char *argv[];
438: {
439: int i, len;
440: char *bp, *host, *src, *suser;
441:
442: for (i = 0; i < argc - 1; i++) {
1.18 markus 443: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 444: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 445: strlen(argv[argc - 1]) + 20;
1.1 deraadt 446: bp = xmalloc(len);
1.18 markus 447: (void) sprintf(bp, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 448: iamrecursive ? " -r" : "", pflag ? " -p" : "",
449: argv[i], argv[argc - 1]);
1.18 markus 450: if (verbose_mode)
451: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 452: if (system(bp))
453: ++errs;
1.18 markus 454: (void) xfree(bp);
1.1 deraadt 455: continue;
456: }
457: *src++ = 0;
458: if (*src == 0)
459: src = ".";
460: if ((host = strchr(argv[i], '@')) == NULL) {
461: host = argv[i];
462: suser = NULL;
463: } else {
464: *host++ = 0;
465: suser = argv[i];
466: if (*suser == '\0')
467: suser = pwd->pw_name;
468: else if (!okname(suser))
469: continue;
470: }
1.23 markus 471: host = cleanhostname(host);
1.1 deraadt 472: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 473: bp = xmalloc(len);
474: (void) sprintf(bp, "%s -f %s", cmd, src);
1.35 deraadt 475: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 476: (void) xfree(bp);
477: ++errs;
478: continue;
1.1 deraadt 479: }
1.18 markus 480: xfree(bp);
1.1 deraadt 481: sink(1, argv + argc - 1);
1.18 markus 482: (void) close(remin);
1.1 deraadt 483: remin = remout = -1;
484: }
485: }
486:
487: void
488: source(argc, argv)
489: int argc;
490: char *argv[];
491: {
492: struct stat stb;
493: static BUF buffer;
494: BUF *bp;
495: off_t i;
496: int amt, fd, haderr, indx, result;
497: char *last, *name, buf[2048];
498:
499: for (indx = 0; indx < argc; ++indx) {
1.18 markus 500: name = argv[indx];
1.11 aaron 501: statbytes = 0;
1.1 deraadt 502: if ((fd = open(name, O_RDONLY, 0)) < 0)
503: goto syserr;
504: if (fstat(fd, &stb) < 0) {
505: syserr: run_err("%s: %s", name, strerror(errno));
506: goto next;
507: }
508: switch (stb.st_mode & S_IFMT) {
509: case S_IFREG:
510: break;
511: case S_IFDIR:
512: if (iamrecursive) {
513: rsource(name, &stb);
514: goto next;
515: }
516: /* FALLTHROUGH */
517: default:
518: run_err("%s: not a regular file", name);
519: goto next;
520: }
521: if ((last = strrchr(name, '/')) == NULL)
522: last = name;
523: else
524: ++last;
1.11 aaron 525: curfile = last;
1.1 deraadt 526: if (pflag) {
527: /*
528: * Make it compatible with possible future
529: * versions expecting microseconds.
530: */
1.18 markus 531: (void) sprintf(buf, "T%lu 0 %lu 0\n",
1.35 deraadt 532: (unsigned long) stb.st_mtime,
533: (unsigned long) stb.st_atime);
1.29 deraadt 534: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 535: if (response() < 0)
536: goto next;
537: }
538: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.44 deraadt 539: sprintf(buf, "C%04o %lu %s\n",
540: (unsigned int) (stb.st_mode & FILEMODEMASK),
541: (unsigned long) stb.st_size, last);
1.18 markus 542: if (verbose_mode) {
543: fprintf(stderr, "Sending file modes: %s", buf);
544: fflush(stderr);
545: }
1.29 deraadt 546: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 547: if (response() < 0)
548: goto next;
549: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 550: next: (void) close(fd);
1.1 deraadt 551: continue;
552: }
1.12 aaron 553: if (showprogress) {
554: totalbytes = stb.st_size;
1.6 aaron 555: progressmeter(-1);
1.12 aaron 556: }
1.1 deraadt 557: /* Keep writing after an error so that we stay sync'd up. */
558: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
559: amt = bp->cnt;
560: if (i + amt > stb.st_size)
561: amt = stb.st_size - i;
562: if (!haderr) {
1.30 deraadt 563: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 564: if (result != amt)
565: haderr = result >= 0 ? EIO : errno;
566: }
567: if (haderr)
1.29 deraadt 568: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 569: else {
1.29 deraadt 570: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 571: if (result != amt)
572: haderr = result >= 0 ? EIO : errno;
1.4 aaron 573: statbytes += result;
1.1 deraadt 574: }
575: }
1.18 markus 576: if (showprogress)
1.6 aaron 577: progressmeter(1);
1.4 aaron 578:
1.1 deraadt 579: if (close(fd) < 0 && !haderr)
580: haderr = errno;
581: if (!haderr)
1.29 deraadt 582: (void) atomicio(write, remout, "", 1);
1.1 deraadt 583: else
584: run_err("%s: %s", name, strerror(haderr));
1.18 markus 585: (void) response();
1.1 deraadt 586: }
587: }
588:
589: void
590: rsource(name, statp)
591: char *name;
592: struct stat *statp;
593: {
594: DIR *dirp;
595: struct dirent *dp;
596: char *last, *vect[1], path[1100];
597:
598: if (!(dirp = opendir(name))) {
599: run_err("%s: %s", name, strerror(errno));
600: return;
601: }
602: last = strrchr(name, '/');
603: if (last == 0)
604: last = name;
605: else
606: last++;
607: if (pflag) {
1.18 markus 608: (void) sprintf(path, "T%lu 0 %lu 0\n",
1.35 deraadt 609: (unsigned long) statp->st_mtime,
610: (unsigned long) statp->st_atime);
1.29 deraadt 611: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 612: if (response() < 0) {
613: closedir(dirp);
614: return;
615: }
616: }
1.18 markus 617: (void) sprintf(path, "D%04o %d %.1024s\n",
1.35 deraadt 618: (unsigned int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 619: if (verbose_mode)
620: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 621: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 622: if (response() < 0) {
623: closedir(dirp);
624: return;
625: }
626: while ((dp = readdir(dirp))) {
627: if (dp->d_ino == 0)
628: continue;
629: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
630: continue;
631: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
632: run_err("%s/%s: name too long", name, dp->d_name);
633: continue;
634: }
1.18 markus 635: (void) sprintf(path, "%s/%s", name, dp->d_name);
1.1 deraadt 636: vect[0] = path;
637: source(1, vect);
638: }
1.18 markus 639: (void) closedir(dirp);
1.29 deraadt 640: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 641: (void) response();
1.1 deraadt 642: }
643:
644: void
645: sink(argc, argv)
646: int argc;
647: char *argv[];
648: {
649: static BUF buffer;
650: struct stat stb;
1.18 markus 651: enum {
652: YES, NO, DISPLAYED
653: } wrerr;
1.1 deraadt 654: BUF *bp;
655: off_t i, j;
656: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 657: off_t size;
658: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 659: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.18 markus 660: int dummy_usec;
1.40 markus 661: struct timeval tv[2];
1.1 deraadt 662:
663: #define SCREWUP(str) { why = str; goto screwup; }
664:
665: setimes = targisdir = 0;
666: mask = umask(0);
667: if (!pflag)
1.18 markus 668: (void) umask(mask);
1.1 deraadt 669: if (argc != 1) {
670: run_err("ambiguous target");
671: exit(1);
672: }
673: targ = *argv;
674: if (targetshouldbedirectory)
675: verifydir(targ);
1.18 markus 676:
1.29 deraadt 677: (void) atomicio(write, remout, "", 1);
1.1 deraadt 678: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
679: targisdir = 1;
680: for (first = 1;; first = 0) {
681: cp = buf;
1.30 deraadt 682: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 683: return;
684: if (*cp++ == '\n')
685: SCREWUP("unexpected <newline>");
686: do {
1.30 deraadt 687: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 688: SCREWUP("lost connection");
689: *cp++ = ch;
690: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
691: *cp = 0;
692:
693: if (buf[0] == '\01' || buf[0] == '\02') {
694: if (iamremote == 0)
1.29 deraadt 695: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 696: buf + 1, strlen(buf + 1));
1.1 deraadt 697: if (buf[0] == '\02')
698: exit(1);
699: ++errs;
700: continue;
701: }
702: if (buf[0] == 'E') {
1.29 deraadt 703: (void) atomicio(write, remout, "", 1);
1.1 deraadt 704: return;
705: }
706: if (ch == '\n')
707: *--cp = 0;
708:
709: #define getnum(t) (t) = 0; \
710: while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
711: cp = buf;
712: if (*cp == 'T') {
713: setimes++;
714: cp++;
1.40 markus 715: getnum(tv[1].tv_sec);
1.1 deraadt 716: if (*cp++ != ' ')
717: SCREWUP("mtime.sec not delimited");
718: getnum(dummy_usec);
1.40 markus 719: tv[1].tv_usec = 0;
1.1 deraadt 720: if (*cp++ != ' ')
721: SCREWUP("mtime.usec not delimited");
1.40 markus 722: getnum(tv[0].tv_sec);
1.1 deraadt 723: if (*cp++ != ' ')
724: SCREWUP("atime.sec not delimited");
725: getnum(dummy_usec);
1.40 markus 726: tv[0].tv_usec = 0;
1.1 deraadt 727: if (*cp++ != '\0')
728: SCREWUP("atime.usec not delimited");
1.29 deraadt 729: (void) atomicio(write, remout, "", 1);
1.1 deraadt 730: continue;
731: }
732: if (*cp != 'C' && *cp != 'D') {
733: /*
734: * Check for the case "rcp remote:foo\* local:bar".
735: * In this case, the line "No match." can be returned
736: * by the shell before the rcp command on the remote is
737: * executed so the ^Aerror_message convention isn't
738: * followed.
739: */
740: if (first) {
741: run_err("%s", cp);
742: exit(1);
743: }
744: SCREWUP("expected control record");
745: }
746: mode = 0;
747: for (++cp; cp < buf + 5; cp++) {
748: if (*cp < '0' || *cp > '7')
749: SCREWUP("bad mode");
750: mode = (mode << 3) | (*cp - '0');
751: }
752: if (*cp++ != ' ')
753: SCREWUP("mode not delimited");
754:
1.18 markus 755: for (size = 0; *cp >= '0' && *cp <= '9';)
1.1 deraadt 756: size = size * 10 + (*cp++ - '0');
757: if (*cp++ != ' ')
758: SCREWUP("size not delimited");
759: if (targisdir) {
760: static char *namebuf;
761: static int cursize;
762: size_t need;
763:
764: need = strlen(targ) + strlen(cp) + 250;
765: if (need > cursize)
1.18 markus 766: namebuf = xmalloc(need);
767: (void) sprintf(namebuf, "%s%s%s", targ,
1.35 deraadt 768: *targ ? "/" : "", cp);
1.1 deraadt 769: np = namebuf;
770: } else
771: np = targ;
1.12 aaron 772: curfile = cp;
1.1 deraadt 773: exists = stat(np, &stb) == 0;
774: if (buf[0] == 'D') {
775: int mod_flag = pflag;
776: if (exists) {
777: if (!S_ISDIR(stb.st_mode)) {
778: errno = ENOTDIR;
779: goto bad;
780: }
781: if (pflag)
1.18 markus 782: (void) chmod(np, mode);
1.1 deraadt 783: } else {
1.18 markus 784: /* Handle copying from a read-only
785: directory */
1.1 deraadt 786: mod_flag = 1;
787: if (mkdir(np, mode | S_IRWXU) < 0)
788: goto bad;
789: }
790: vect[0] = np;
791: sink(1, vect);
792: if (setimes) {
793: setimes = 0;
1.40 markus 794: if (utimes(np, tv) < 0)
1.18 markus 795: run_err("%s: set times: %s",
796: np, strerror(errno));
1.1 deraadt 797: }
798: if (mod_flag)
1.18 markus 799: (void) chmod(np, mode);
1.1 deraadt 800: continue;
801: }
802: omode = mode;
803: mode |= S_IWRITE;
1.18 markus 804: if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) {
1.1 deraadt 805: bad: run_err("%s: %s", np, strerror(errno));
806: continue;
807: }
1.29 deraadt 808: (void) atomicio(write, remout, "", 1);
1.1 deraadt 809: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 810: (void) close(ofd);
1.1 deraadt 811: continue;
812: }
813: cp = bp->buf;
814: wrerr = NO;
1.7 deraadt 815:
816: if (showprogress) {
817: totalbytes = size;
818: progressmeter(-1);
819: }
1.12 aaron 820: statbytes = 0;
1.1 deraadt 821: for (count = i = 0; i < size; i += 4096) {
822: amt = 4096;
823: if (i + amt > size)
824: amt = size - i;
825: count += amt;
826: do {
1.43 markus 827: j = read(remin, cp, amt);
828: if (j == -1 && (errno == EINTR || errno == EAGAIN)) {
829: continue;
830: } else if (j <= 0) {
1.1 deraadt 831: run_err("%s", j ? strerror(errno) :
1.18 markus 832: "dropped connection");
1.1 deraadt 833: exit(1);
834: }
835: amt -= j;
836: cp += j;
1.18 markus 837: statbytes += j;
1.1 deraadt 838: } while (amt > 0);
839: if (count == bp->cnt) {
840: /* Keep reading so we stay sync'd up. */
841: if (wrerr == NO) {
1.30 deraadt 842: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 843: if (j != count) {
844: wrerr = YES;
1.18 markus 845: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 846: }
847: }
848: count = 0;
849: cp = bp->buf;
850: }
851: }
1.7 deraadt 852: if (showprogress)
853: progressmeter(1);
1.1 deraadt 854: if (count != 0 && wrerr == NO &&
1.30 deraadt 855: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 856: wrerr = YES;
1.18 markus 857: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 858: }
859: #if 0
860: if (ftruncate(ofd, size)) {
861: run_err("%s: truncate: %s", np, strerror(errno));
862: wrerr = DISPLAYED;
863: }
864: #endif
865: if (pflag) {
866: if (exists || omode != mode)
867: if (fchmod(ofd, omode))
868: run_err("%s: set mode: %s",
1.18 markus 869: np, strerror(errno));
1.1 deraadt 870: } else {
871: if (!exists && omode != mode)
872: if (fchmod(ofd, omode & ~mask))
873: run_err("%s: set mode: %s",
1.18 markus 874: np, strerror(errno));
1.1 deraadt 875: }
1.33 provos 876: if (close(ofd) == -1) {
877: wrerr = YES;
878: wrerrno = errno;
879: }
1.18 markus 880: (void) response();
1.1 deraadt 881: if (setimes && wrerr == NO) {
882: setimes = 0;
1.40 markus 883: if (utimes(np, tv) < 0) {
1.1 deraadt 884: run_err("%s: set times: %s",
1.18 markus 885: np, strerror(errno));
1.1 deraadt 886: wrerr = DISPLAYED;
887: }
888: }
1.18 markus 889: switch (wrerr) {
1.1 deraadt 890: case YES:
891: run_err("%s: %s", np, strerror(wrerrno));
892: break;
893: case NO:
1.29 deraadt 894: (void) atomicio(write, remout, "", 1);
1.1 deraadt 895: break;
896: case DISPLAYED:
897: break;
898: }
899: }
900: screwup:
901: run_err("protocol error: %s", why);
902: exit(1);
903: }
904:
905: int
906: response()
907: {
908: char ch, *cp, resp, rbuf[2048];
909:
1.30 deraadt 910: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 911: lostconn(0);
912:
913: cp = rbuf;
1.18 markus 914: switch (resp) {
915: case 0: /* ok */
1.1 deraadt 916: return (0);
917: default:
918: *cp++ = resp;
919: /* FALLTHROUGH */
1.18 markus 920: case 1: /* error, followed by error msg */
921: case 2: /* fatal error, "" */
1.1 deraadt 922: do {
1.30 deraadt 923: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 924: lostconn(0);
925: *cp++ = ch;
926: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
927:
928: if (!iamremote)
1.29 deraadt 929: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 930: ++errs;
931: if (resp == 1)
932: return (-1);
933: exit(1);
934: }
935: /* NOTREACHED */
936: }
937:
938: void
939: usage()
940: {
1.34 deraadt 941: (void) fprintf(stderr, "usage: scp "
942: "[-pqrvC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2; or:\n"
943: " scp [options] f1 ... fn directory\n");
1.1 deraadt 944: exit(1);
945: }
946:
947: void
1.18 markus 948: run_err(const char *fmt,...)
1.1 deraadt 949: {
950: static FILE *fp;
951: va_list ap;
952: va_start(ap, fmt);
953:
954: ++errs;
955: if (fp == NULL && !(fp = fdopen(remout, "w")))
956: return;
1.18 markus 957: (void) fprintf(fp, "%c", 0x01);
958: (void) fprintf(fp, "scp: ");
959: (void) vfprintf(fp, fmt, ap);
960: (void) fprintf(fp, "\n");
961: (void) fflush(fp);
962:
963: if (!iamremote) {
964: vfprintf(stderr, fmt, ap);
965: fprintf(stderr, "\n");
966: }
1.1 deraadt 967: va_end(ap);
968: }
969:
970: char *
971: colon(cp)
972: char *cp;
973: {
1.23 markus 974: int flag = 0;
975:
1.1 deraadt 976: if (*cp == ':') /* Leading colon is part of file name. */
977: return (0);
1.23 markus 978: if (*cp == '[')
979: flag = 1;
1.1 deraadt 980:
981: for (; *cp; ++cp) {
1.23 markus 982: if (*cp == '@' && *(cp+1) == '[')
983: flag = 1;
984: if (*cp == ']' && *(cp+1) == ':' && flag)
985: return (cp+1);
986: if (*cp == ':' && !flag)
1.1 deraadt 987: return (cp);
988: if (*cp == '/')
989: return (0);
990: }
991: return (0);
992: }
993:
994: void
995: verifydir(cp)
996: char *cp;
997: {
998: struct stat stb;
999:
1000: if (!stat(cp, &stb)) {
1001: if (S_ISDIR(stb.st_mode))
1002: return;
1003: errno = ENOTDIR;
1004: }
1005: run_err("%s: %s", cp, strerror(errno));
1006: exit(1);
1007: }
1008:
1009: int
1010: okname(cp0)
1011: char *cp0;
1012: {
1013: int c;
1014: char *cp;
1015:
1016: cp = cp0;
1017: do {
1018: c = *cp;
1019: if (c & 0200)
1020: goto bad;
1.25 markus 1021: if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-' && c != '.')
1.1 deraadt 1022: goto bad;
1023: } while (*++cp);
1024: return (1);
1025:
1.25 markus 1026: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1027: return (0);
1028: }
1029:
1030: BUF *
1031: allocbuf(bp, fd, blksize)
1032: BUF *bp;
1033: int fd, blksize;
1034: {
1035: size_t size;
1036: struct stat stb;
1037:
1038: if (fstat(fd, &stb) < 0) {
1039: run_err("fstat: %s", strerror(errno));
1040: return (0);
1041: }
1.18 markus 1042: if (stb.st_blksize == 0)
1043: size = blksize;
1044: else
1045: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1046: stb.st_blksize;
1.1 deraadt 1047: if (bp->cnt >= size)
1048: return (bp);
1.18 markus 1049: if (bp->buf == NULL)
1050: bp->buf = xmalloc(size);
1051: else
1052: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1053: bp->cnt = size;
1054: return (bp);
1055: }
1056:
1057: void
1058: lostconn(signo)
1059: int signo;
1060: {
1061: if (!iamremote)
1062: fprintf(stderr, "lost connection\n");
1063: exit(1);
1064: }
1.4 aaron 1065:
1.10 deraadt 1066:
1.8 deraadt 1067: void
1068: alarmtimer(int wait)
1.4 aaron 1069: {
1.18 markus 1070: struct itimerval itv;
1.4 aaron 1071:
1.18 markus 1072: itv.it_value.tv_sec = wait;
1073: itv.it_value.tv_usec = 0;
1074: itv.it_interval = itv.it_value;
1075: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1076: }
1077:
1.8 deraadt 1078: void
1.26 markus 1079: updateprogressmeter(int ignore)
1.4 aaron 1080: {
1.9 deraadt 1081: int save_errno = errno;
1082:
1.4 aaron 1083: progressmeter(0);
1.9 deraadt 1084: errno = save_errno;
1.4 aaron 1085: }
1086:
1.16 deraadt 1087: int
1088: foregroundproc()
1089: {
1090: static pid_t pgrp = -1;
1091: int ctty_pgrp;
1092:
1093: if (pgrp == -1)
1094: pgrp = getpgrp();
1095:
1.18 markus 1096: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1097: ctty_pgrp == pgrp));
1.16 deraadt 1098: }
1099:
1.8 deraadt 1100: void
1101: progressmeter(int flag)
1.4 aaron 1102: {
1103: static const char prefixes[] = " KMGTP";
1104: static struct timeval lastupdate;
1.11 aaron 1105: static off_t lastsize;
1.4 aaron 1106: struct timeval now, td, wait;
1107: off_t cursize, abbrevsize;
1108: double elapsed;
1109: int ratio, barlength, i, remaining;
1110: char buf[256];
1111:
1112: if (flag == -1) {
1.18 markus 1113: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1114: lastupdate = start;
1.11 aaron 1115: lastsize = 0;
1.18 markus 1116: }
1.16 deraadt 1117: if (foregroundproc() == 0)
1118: return;
1119:
1.18 markus 1120: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1121: cursize = statbytes;
1.13 aaron 1122: if (totalbytes != 0) {
1.21 markus 1123: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1124: ratio = MAX(ratio, 0);
1125: ratio = MIN(ratio, 100);
1.18 markus 1126: } else
1.13 aaron 1127: ratio = 100;
1128:
1.18 markus 1129: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1130:
1.11 aaron 1131: barlength = getttywidth() - 51;
1.4 aaron 1132: if (barlength > 0) {
1133: i = barlength * ratio / 100;
1134: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1135: "|%.*s%*s|", i,
1136: "*****************************************************************************"
1137: "*****************************************************************************",
1138: barlength - i, "");
1.4 aaron 1139: }
1140: i = 0;
1141: abbrevsize = cursize;
1142: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1143: i++;
1144: abbrevsize >>= 10;
1145: }
1146: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ",
1.44 deraadt 1147: (quad_t) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1148:
1149: timersub(&now, &lastupdate, &wait);
1150: if (cursize > lastsize) {
1151: lastupdate = now;
1152: lastsize = cursize;
1153: if (wait.tv_sec >= STALLTIME) {
1154: start.tv_sec += wait.tv_sec;
1155: start.tv_usec += wait.tv_usec;
1156: }
1157: wait.tv_sec = 0;
1158: }
1159: timersub(&now, &start, &td);
1.6 aaron 1160: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1161:
1.44 deraadt 1162: if (flag != 1 &&
1163: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1164: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1165: " --:-- ETA");
1.4 aaron 1166: } else if (wait.tv_sec >= STALLTIME) {
1167: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1168: " - stalled -");
1.4 aaron 1169: } else {
1.28 deraadt 1170: if (flag != 1)
1.44 deraadt 1171: remaining = (int)(totalbytes / (statbytes / elapsed) -
1172: elapsed);
1.28 deraadt 1173: else
1174: remaining = elapsed;
1175:
1.14 aaron 1176: i = remaining / 3600;
1.4 aaron 1177: if (i)
1178: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1179: "%2d:", i);
1.4 aaron 1180: else
1181: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1182: " ");
1.4 aaron 1183: i = remaining % 3600;
1184: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1185: "%02d:%02d%s", i / 60, i % 60,
1186: (flag != 1) ? " ETA" : " ");
1.4 aaron 1187: }
1.10 deraadt 1188: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1189:
1190: if (flag == -1) {
1.26 markus 1191: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1192: alarmtimer(1);
1193: } else if (flag == 1) {
1.10 deraadt 1194: alarmtimer(0);
1.29 deraadt 1195: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1196: statbytes = 0;
1.4 aaron 1197: }
1198: }
1199:
1.8 deraadt 1200: int
1201: getttywidth(void)
1.4 aaron 1202: {
1203: struct winsize winsize;
1204:
1205: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1206: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1207: else
1.18 markus 1208: return (80);
1.41 markus 1209: }
1210:
1211: void
1212: addargs(char *fmt, ...)
1213: {
1214: va_list ap;
1215: char buf[1024];
1216:
1217: va_start(ap, fmt);
1218: vsnprintf(buf, sizeof(buf), fmt, ap);
1219: va_end(ap);
1220:
1221: if (args.list == NULL) {
1222: args.nalloc = 32;
1223: args.num = 0;
1224: args.list = xmalloc(args.nalloc * sizeof(char *));
1225: } else if (args.num+2 >= args.nalloc) {
1226: args.nalloc *= 2;
1227: args.list = xrealloc(args.list, args.nalloc * sizeof(char *));
1228: }
1229: args.list[args.num++] = xstrdup(buf);
1230: args.list[args.num] = NULL;
1.4 aaron 1231: }
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