Annotation of src/usr.bin/ssh/scp.c, Revision 1.50
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"
1.50 ! markus 78: RCSID("$OpenBSD: scp.c,v 1.49 2001/01/13 18:03:07 markus Exp $");
1.1 deraadt 79:
80: #include "ssh.h"
81: #include "xmalloc.h"
1.50 ! markus 82: #include "pathnames.h"
1.1 deraadt 83:
1.11 aaron 84: /* For progressmeter() -- number of seconds before xfer considered "stalled" */
1.4 aaron 85: #define STALLTIME 5
86:
1.11 aaron 87: /* Visual statistics about files as they are transferred. */
88: void progressmeter(int);
89:
90: /* Returns width of the terminal (for progress meter calculations). */
91: int getttywidth(void);
1.35 deraadt 92: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
1.11 aaron 93:
1.41 markus 94: /* setup arguments for the call to ssh */
95: void addargs(char *fmt, ...) __attribute__((format(printf, 1, 2)));
96:
1.11 aaron 97: /* Time a transfer started. */
1.4 aaron 98: static struct timeval start;
1.11 aaron 99:
100: /* Number of bytes of current file transferred so far. */
1.47 markus 101: volatile u_long statbytes;
1.11 aaron 102:
103: /* Total size of current file. */
1.15 markus 104: off_t totalbytes = 0;
1.11 aaron 105:
106: /* Name of current file being transferred. */
107: char *curfile;
1.4 aaron 108:
1.1 deraadt 109: /* This is set to non-zero to enable verbose mode. */
1.17 markus 110: int verbose_mode = 0;
1.1 deraadt 111:
1.6 aaron 112: /* This is set to zero if the progressmeter is not desired. */
113: int showprogress = 1;
114:
1.34 deraadt 115: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 ! markus 116: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 117:
1.41 markus 118: /* This is the list of arguments that scp passes to ssh */
119: struct {
120: char **list;
121: int num;
122: int nalloc;
123: } args;
124:
1.20 markus 125: /*
126: * This function executes the given command as the specified user on the
127: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
128: * assigns the input and output file descriptors on success.
129: */
1.1 deraadt 130:
1.27 markus 131: int
1.35 deraadt 132: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
1.1 deraadt 133: {
1.18 markus 134: int pin[2], pout[2], reserved[2];
135:
136: if (verbose_mode)
1.41 markus 137: fprintf(stderr, "Executing: program %s host %s, user %s, command %s\n",
138: ssh_program, host, remuser ? remuser : "(unspecified)", cmd);
1.18 markus 139:
1.20 markus 140: /*
141: * Reserve two descriptors so that the real pipes won't get
142: * descriptors 0 and 1 because that will screw up dup2 below.
143: */
1.18 markus 144: pipe(reserved);
145:
146: /* Create a socket pair for communicating with ssh. */
147: if (pipe(pin) < 0)
148: fatal("pipe: %s", strerror(errno));
149: if (pipe(pout) < 0)
150: fatal("pipe: %s", strerror(errno));
151:
152: /* Free the reserved descriptors. */
153: close(reserved[0]);
154: close(reserved[1]);
155:
156: /* For a child to execute the command on the remote host using ssh. */
1.41 markus 157: if (fork() == 0) {
1.18 markus 158: /* Child. */
159: close(pin[1]);
160: close(pout[0]);
161: dup2(pin[0], 0);
162: dup2(pout[1], 1);
163: close(pin[0]);
164: close(pout[1]);
165:
1.41 markus 166: args.list[0] = ssh_program;
167: if (remuser != NULL)
1.42 markus 168: addargs("-l%s", remuser);
1.41 markus 169: addargs("%s", host);
170: addargs("%s", cmd);
1.18 markus 171:
1.41 markus 172: execvp(ssh_program, args.list);
1.34 deraadt 173: perror(ssh_program);
1.18 markus 174: exit(1);
175: }
176: /* Parent. Close the other side, and return the local side. */
177: close(pin[0]);
178: *fdout = pin[1];
179: close(pout[1]);
180: *fdin = pout[0];
181: return 0;
1.1 deraadt 182: }
183:
184: typedef struct {
185: int cnt;
186: char *buf;
187: } BUF;
188:
189: extern int iamremote;
190:
1.18 markus 191: BUF *allocbuf(BUF *, int, int);
192: char *colon(char *);
193: void lostconn(int);
194: void nospace(void);
195: int okname(char *);
196: void run_err(const char *,...);
197: void verifydir(char *);
1.1 deraadt 198:
199: struct passwd *pwd;
1.18 markus 200: uid_t userid;
1.1 deraadt 201: int errs, remin, remout;
202: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
203:
204: #define CMDNEEDS 64
205: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
206:
1.18 markus 207: int response(void);
208: void rsource(char *, struct stat *);
209: void sink(int, char *[]);
210: void source(int, char *[]);
211: void tolocal(int, char *[]);
212: void toremote(char *, int, char *[]);
213: void usage(void);
1.1 deraadt 214:
215: int
216: main(argc, argv)
217: int argc;
218: char *argv[];
219: {
220: int ch, fflag, tflag;
221: char *targ;
222: extern char *optarg;
223: extern int optind;
224:
1.41 markus 225: args.list = NULL;
226: addargs("ssh"); /* overwritten with ssh_program */
227: addargs("-x");
228: addargs("-oFallBackToRsh no");
229:
1.1 deraadt 230: fflag = tflag = 0;
1.49 markus 231: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
1.18 markus 232: switch (ch) {
233: /* User-visible flags. */
1.23 markus 234: case '4':
1.41 markus 235: case '6':
236: case 'C':
237: addargs("-%c", ch);
238: break;
239: case 'o':
240: case 'c':
241: case 'i':
1.42 markus 242: addargs("-%c%s", ch, optarg);
1.23 markus 243: break;
1.41 markus 244: case 'P':
1.42 markus 245: addargs("-p%s", optarg);
1.41 markus 246: break;
247: case 'B':
1.42 markus 248: addargs("-oBatchmode yes");
1.23 markus 249: break;
1.1 deraadt 250: case 'p':
251: pflag = 1;
252: break;
253: case 'r':
254: iamrecursive = 1;
255: break;
1.34 deraadt 256: case 'S':
1.41 markus 257: ssh_program = xstrdup(optarg);
258: break;
259: case 'v':
260: verbose_mode = 1;
261: break;
262: case 'q':
263: showprogress = 0;
1.34 deraadt 264: break;
265:
1.18 markus 266: /* Server options. */
1.1 deraadt 267: case 'd':
268: targetshouldbedirectory = 1;
269: break;
1.18 markus 270: case 'f': /* "from" */
1.1 deraadt 271: iamremote = 1;
272: fflag = 1;
273: break;
1.18 markus 274: case 't': /* "to" */
1.1 deraadt 275: iamremote = 1;
276: tflag = 1;
277: break;
278: case '?':
279: default:
280: usage();
281: }
282: argc -= optind;
283: argv += optind;
284:
285: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 286: fatal("unknown user %d", (int) userid);
1.1 deraadt 287:
1.18 markus 288: if (!isatty(STDERR_FILENO))
1.7 deraadt 289: showprogress = 0;
290:
1.1 deraadt 291: remin = STDIN_FILENO;
292: remout = STDOUT_FILENO;
293:
1.18 markus 294: if (fflag) {
295: /* Follow "protocol", send data. */
296: (void) response();
1.1 deraadt 297: source(argc, argv);
298: exit(errs != 0);
299: }
1.18 markus 300: if (tflag) {
301: /* Receive data. */
1.1 deraadt 302: sink(argc, argv);
303: exit(errs != 0);
304: }
305: if (argc < 2)
306: usage();
307: if (argc > 2)
308: targetshouldbedirectory = 1;
309:
310: remin = remout = -1;
311: /* Command to be executed on remote system using "ssh". */
1.18 markus 312: (void) sprintf(cmd, "scp%s%s%s%s", verbose_mode ? " -v" : "",
1.35 deraadt 313: iamrecursive ? " -r" : "", pflag ? " -p" : "",
314: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 315:
1.18 markus 316: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 317:
318: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
319: toremote(targ, argc, argv);
320: else {
1.18 markus 321: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 322: if (targetshouldbedirectory)
323: verifydir(argv[argc - 1]);
324: }
325: exit(errs != 0);
326: }
327:
1.23 markus 328: char *
329: cleanhostname(host)
330: char *host;
331: {
332: if (*host == '[' && host[strlen(host) - 1] == ']') {
333: host[strlen(host) - 1] = '\0';
334: return (host + 1);
335: } else
336: return host;
337: }
338:
1.1 deraadt 339: void
340: toremote(targ, argc, argv)
341: char *targ, *argv[];
342: int argc;
343: {
344: int i, len;
345: char *bp, *host, *src, *suser, *thost, *tuser;
346:
347: *targ++ = 0;
348: if (*targ == 0)
349: targ = ".";
350:
351: if ((thost = strchr(argv[argc - 1], '@'))) {
352: /* user@host */
353: *thost++ = 0;
354: tuser = argv[argc - 1];
355: if (*tuser == '\0')
356: tuser = NULL;
357: else if (!okname(tuser))
358: exit(1);
359: } else {
360: thost = argv[argc - 1];
361: tuser = NULL;
362: }
363:
364: for (i = 0; i < argc - 1; i++) {
365: src = colon(argv[i]);
1.18 markus 366: if (src) { /* remote to remote */
1.1 deraadt 367: *src++ = 0;
368: if (*src == 0)
369: src = ".";
370: host = strchr(argv[i], '@');
1.34 deraadt 371: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 372: strlen(src) + (tuser ? strlen(tuser) : 0) +
373: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 374: bp = xmalloc(len);
1.1 deraadt 375: if (host) {
376: *host++ = 0;
1.23 markus 377: host = cleanhostname(host);
1.1 deraadt 378: suser = argv[i];
379: if (*suser == '\0')
380: suser = pwd->pw_name;
381: else if (!okname(suser))
382: continue;
1.44 deraadt 383: sprintf(bp,
1.34 deraadt 384: "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 385: ssh_program, verbose_mode ? " -v" : "",
386: suser, host, cmd, src,
387: tuser ? tuser : "", tuser ? "@" : "",
388: thost, targ);
1.23 markus 389: } else {
390: host = cleanhostname(argv[i]);
1.44 deraadt 391: sprintf(bp,
1.34 deraadt 392: "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'",
1.44 deraadt 393: ssh_program, verbose_mode ? " -v" : "",
394: host, cmd, src,
395: tuser ? tuser : "", tuser ? "@" : "",
396: thost, targ);
1.23 markus 397: }
1.18 markus 398: if (verbose_mode)
399: fprintf(stderr, "Executing: %s\n", bp);
400: (void) system(bp);
401: (void) xfree(bp);
402: } else { /* local to remote */
1.1 deraadt 403: if (remin == -1) {
404: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 405: bp = xmalloc(len);
406: (void) sprintf(bp, "%s -t %s", cmd, targ);
1.23 markus 407: host = cleanhostname(thost);
1.35 deraadt 408: if (do_cmd(host, tuser, bp, &remin,
409: &remout, argc) < 0)
1.18 markus 410: exit(1);
1.1 deraadt 411: if (response() < 0)
412: exit(1);
1.18 markus 413: (void) xfree(bp);
1.1 deraadt 414: }
1.18 markus 415: source(1, argv + i);
1.1 deraadt 416: }
417: }
418: }
419:
420: void
421: tolocal(argc, argv)
422: int argc;
423: char *argv[];
424: {
425: int i, len;
426: char *bp, *host, *src, *suser;
427:
428: for (i = 0; i < argc - 1; i++) {
1.18 markus 429: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 430: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 431: strlen(argv[argc - 1]) + 20;
1.1 deraadt 432: bp = xmalloc(len);
1.18 markus 433: (void) sprintf(bp, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 434: iamrecursive ? " -r" : "", pflag ? " -p" : "",
435: argv[i], argv[argc - 1]);
1.18 markus 436: if (verbose_mode)
437: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 438: if (system(bp))
439: ++errs;
1.18 markus 440: (void) xfree(bp);
1.1 deraadt 441: continue;
442: }
443: *src++ = 0;
444: if (*src == 0)
445: src = ".";
446: if ((host = strchr(argv[i], '@')) == NULL) {
447: host = argv[i];
448: suser = NULL;
449: } else {
450: *host++ = 0;
451: suser = argv[i];
452: if (*suser == '\0')
453: suser = pwd->pw_name;
454: else if (!okname(suser))
455: continue;
456: }
1.23 markus 457: host = cleanhostname(host);
1.1 deraadt 458: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 459: bp = xmalloc(len);
460: (void) sprintf(bp, "%s -f %s", cmd, src);
1.35 deraadt 461: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 462: (void) xfree(bp);
463: ++errs;
464: continue;
1.1 deraadt 465: }
1.18 markus 466: xfree(bp);
1.1 deraadt 467: sink(1, argv + argc - 1);
1.18 markus 468: (void) close(remin);
1.1 deraadt 469: remin = remout = -1;
470: }
471: }
472:
473: void
474: source(argc, argv)
475: int argc;
476: char *argv[];
477: {
478: struct stat stb;
479: static BUF buffer;
480: BUF *bp;
481: off_t i;
482: int amt, fd, haderr, indx, result;
483: char *last, *name, buf[2048];
484:
485: for (indx = 0; indx < argc; ++indx) {
1.18 markus 486: name = argv[indx];
1.11 aaron 487: statbytes = 0;
1.1 deraadt 488: if ((fd = open(name, O_RDONLY, 0)) < 0)
489: goto syserr;
490: if (fstat(fd, &stb) < 0) {
491: syserr: run_err("%s: %s", name, strerror(errno));
492: goto next;
493: }
494: switch (stb.st_mode & S_IFMT) {
495: case S_IFREG:
496: break;
497: case S_IFDIR:
498: if (iamrecursive) {
499: rsource(name, &stb);
500: goto next;
501: }
502: /* FALLTHROUGH */
503: default:
504: run_err("%s: not a regular file", name);
505: goto next;
506: }
507: if ((last = strrchr(name, '/')) == NULL)
508: last = name;
509: else
510: ++last;
1.11 aaron 511: curfile = last;
1.1 deraadt 512: if (pflag) {
513: /*
514: * Make it compatible with possible future
515: * versions expecting microseconds.
516: */
1.18 markus 517: (void) sprintf(buf, "T%lu 0 %lu 0\n",
1.47 markus 518: (u_long) stb.st_mtime,
519: (u_long) stb.st_atime);
1.29 deraadt 520: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 521: if (response() < 0)
522: goto next;
523: }
524: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.44 deraadt 525: sprintf(buf, "C%04o %lu %s\n",
1.47 markus 526: (u_int) (stb.st_mode & FILEMODEMASK),
527: (u_long) stb.st_size, last);
1.18 markus 528: if (verbose_mode) {
529: fprintf(stderr, "Sending file modes: %s", buf);
530: fflush(stderr);
531: }
1.29 deraadt 532: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 533: if (response() < 0)
534: goto next;
535: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 536: next: (void) close(fd);
1.1 deraadt 537: continue;
538: }
1.12 aaron 539: if (showprogress) {
540: totalbytes = stb.st_size;
1.6 aaron 541: progressmeter(-1);
1.12 aaron 542: }
1.1 deraadt 543: /* Keep writing after an error so that we stay sync'd up. */
544: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
545: amt = bp->cnt;
546: if (i + amt > stb.st_size)
547: amt = stb.st_size - i;
548: if (!haderr) {
1.30 deraadt 549: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 550: if (result != amt)
551: haderr = result >= 0 ? EIO : errno;
552: }
553: if (haderr)
1.29 deraadt 554: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 555: else {
1.29 deraadt 556: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 557: if (result != amt)
558: haderr = result >= 0 ? EIO : errno;
1.4 aaron 559: statbytes += result;
1.1 deraadt 560: }
561: }
1.18 markus 562: if (showprogress)
1.6 aaron 563: progressmeter(1);
1.4 aaron 564:
1.1 deraadt 565: if (close(fd) < 0 && !haderr)
566: haderr = errno;
567: if (!haderr)
1.29 deraadt 568: (void) atomicio(write, remout, "", 1);
1.1 deraadt 569: else
570: run_err("%s: %s", name, strerror(haderr));
1.18 markus 571: (void) response();
1.1 deraadt 572: }
573: }
574:
575: void
576: rsource(name, statp)
577: char *name;
578: struct stat *statp;
579: {
580: DIR *dirp;
581: struct dirent *dp;
582: char *last, *vect[1], path[1100];
583:
584: if (!(dirp = opendir(name))) {
585: run_err("%s: %s", name, strerror(errno));
586: return;
587: }
588: last = strrchr(name, '/');
589: if (last == 0)
590: last = name;
591: else
592: last++;
593: if (pflag) {
1.18 markus 594: (void) sprintf(path, "T%lu 0 %lu 0\n",
1.47 markus 595: (u_long) statp->st_mtime,
596: (u_long) statp->st_atime);
1.29 deraadt 597: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 598: if (response() < 0) {
599: closedir(dirp);
600: return;
601: }
602: }
1.18 markus 603: (void) sprintf(path, "D%04o %d %.1024s\n",
1.47 markus 604: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 605: if (verbose_mode)
606: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 607: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 608: if (response() < 0) {
609: closedir(dirp);
610: return;
611: }
612: while ((dp = readdir(dirp))) {
613: if (dp->d_ino == 0)
614: continue;
615: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
616: continue;
617: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
618: run_err("%s/%s: name too long", name, dp->d_name);
619: continue;
620: }
1.18 markus 621: (void) sprintf(path, "%s/%s", name, dp->d_name);
1.1 deraadt 622: vect[0] = path;
623: source(1, vect);
624: }
1.18 markus 625: (void) closedir(dirp);
1.29 deraadt 626: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 627: (void) response();
1.1 deraadt 628: }
629:
630: void
631: sink(argc, argv)
632: int argc;
633: char *argv[];
634: {
635: static BUF buffer;
636: struct stat stb;
1.18 markus 637: enum {
638: YES, NO, DISPLAYED
639: } wrerr;
1.1 deraadt 640: BUF *bp;
641: off_t i, j;
642: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 643: off_t size;
644: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 645: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.18 markus 646: int dummy_usec;
1.40 markus 647: struct timeval tv[2];
1.1 deraadt 648:
649: #define SCREWUP(str) { why = str; goto screwup; }
650:
651: setimes = targisdir = 0;
652: mask = umask(0);
653: if (!pflag)
1.18 markus 654: (void) umask(mask);
1.1 deraadt 655: if (argc != 1) {
656: run_err("ambiguous target");
657: exit(1);
658: }
659: targ = *argv;
660: if (targetshouldbedirectory)
661: verifydir(targ);
1.18 markus 662:
1.29 deraadt 663: (void) atomicio(write, remout, "", 1);
1.1 deraadt 664: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
665: targisdir = 1;
666: for (first = 1;; first = 0) {
667: cp = buf;
1.30 deraadt 668: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 669: return;
670: if (*cp++ == '\n')
671: SCREWUP("unexpected <newline>");
672: do {
1.30 deraadt 673: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 674: SCREWUP("lost connection");
675: *cp++ = ch;
676: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
677: *cp = 0;
678:
679: if (buf[0] == '\01' || buf[0] == '\02') {
680: if (iamremote == 0)
1.29 deraadt 681: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 682: buf + 1, strlen(buf + 1));
1.1 deraadt 683: if (buf[0] == '\02')
684: exit(1);
685: ++errs;
686: continue;
687: }
688: if (buf[0] == 'E') {
1.29 deraadt 689: (void) atomicio(write, remout, "", 1);
1.1 deraadt 690: return;
691: }
692: if (ch == '\n')
693: *--cp = 0;
694:
695: #define getnum(t) (t) = 0; \
696: while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
697: cp = buf;
698: if (*cp == 'T') {
699: setimes++;
700: cp++;
1.40 markus 701: getnum(tv[1].tv_sec);
1.1 deraadt 702: if (*cp++ != ' ')
703: SCREWUP("mtime.sec not delimited");
704: getnum(dummy_usec);
1.40 markus 705: tv[1].tv_usec = 0;
1.1 deraadt 706: if (*cp++ != ' ')
707: SCREWUP("mtime.usec not delimited");
1.40 markus 708: getnum(tv[0].tv_sec);
1.1 deraadt 709: if (*cp++ != ' ')
710: SCREWUP("atime.sec not delimited");
711: getnum(dummy_usec);
1.40 markus 712: tv[0].tv_usec = 0;
1.1 deraadt 713: if (*cp++ != '\0')
714: SCREWUP("atime.usec not delimited");
1.29 deraadt 715: (void) atomicio(write, remout, "", 1);
1.1 deraadt 716: continue;
717: }
718: if (*cp != 'C' && *cp != 'D') {
719: /*
720: * Check for the case "rcp remote:foo\* local:bar".
721: * In this case, the line "No match." can be returned
722: * by the shell before the rcp command on the remote is
723: * executed so the ^Aerror_message convention isn't
724: * followed.
725: */
726: if (first) {
727: run_err("%s", cp);
728: exit(1);
729: }
730: SCREWUP("expected control record");
731: }
732: mode = 0;
733: for (++cp; cp < buf + 5; cp++) {
734: if (*cp < '0' || *cp > '7')
735: SCREWUP("bad mode");
736: mode = (mode << 3) | (*cp - '0');
737: }
738: if (*cp++ != ' ')
739: SCREWUP("mode not delimited");
740:
1.18 markus 741: for (size = 0; *cp >= '0' && *cp <= '9';)
1.1 deraadt 742: size = size * 10 + (*cp++ - '0');
743: if (*cp++ != ' ')
744: SCREWUP("size not delimited");
745: if (targisdir) {
746: static char *namebuf;
747: static int cursize;
748: size_t need;
749:
750: need = strlen(targ) + strlen(cp) + 250;
751: if (need > cursize)
1.18 markus 752: namebuf = xmalloc(need);
753: (void) sprintf(namebuf, "%s%s%s", targ,
1.35 deraadt 754: *targ ? "/" : "", cp);
1.1 deraadt 755: np = namebuf;
756: } else
757: np = targ;
1.12 aaron 758: curfile = cp;
1.1 deraadt 759: exists = stat(np, &stb) == 0;
760: if (buf[0] == 'D') {
761: int mod_flag = pflag;
762: if (exists) {
763: if (!S_ISDIR(stb.st_mode)) {
764: errno = ENOTDIR;
765: goto bad;
766: }
767: if (pflag)
1.18 markus 768: (void) chmod(np, mode);
1.1 deraadt 769: } else {
1.18 markus 770: /* Handle copying from a read-only
771: directory */
1.1 deraadt 772: mod_flag = 1;
773: if (mkdir(np, mode | S_IRWXU) < 0)
774: goto bad;
775: }
776: vect[0] = np;
777: sink(1, vect);
778: if (setimes) {
779: setimes = 0;
1.40 markus 780: if (utimes(np, tv) < 0)
1.18 markus 781: run_err("%s: set times: %s",
782: np, strerror(errno));
1.1 deraadt 783: }
784: if (mod_flag)
1.18 markus 785: (void) chmod(np, mode);
1.1 deraadt 786: continue;
787: }
788: omode = mode;
789: mode |= S_IWRITE;
1.18 markus 790: if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) {
1.1 deraadt 791: bad: run_err("%s: %s", np, strerror(errno));
792: continue;
793: }
1.29 deraadt 794: (void) atomicio(write, remout, "", 1);
1.1 deraadt 795: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 796: (void) close(ofd);
1.1 deraadt 797: continue;
798: }
799: cp = bp->buf;
800: wrerr = NO;
1.7 deraadt 801:
802: if (showprogress) {
803: totalbytes = size;
804: progressmeter(-1);
805: }
1.12 aaron 806: statbytes = 0;
1.1 deraadt 807: for (count = i = 0; i < size; i += 4096) {
808: amt = 4096;
809: if (i + amt > size)
810: amt = size - i;
811: count += amt;
812: do {
1.43 markus 813: j = read(remin, cp, amt);
814: if (j == -1 && (errno == EINTR || errno == EAGAIN)) {
815: continue;
816: } else if (j <= 0) {
1.1 deraadt 817: run_err("%s", j ? strerror(errno) :
1.18 markus 818: "dropped connection");
1.1 deraadt 819: exit(1);
820: }
821: amt -= j;
822: cp += j;
1.18 markus 823: statbytes += j;
1.1 deraadt 824: } while (amt > 0);
825: if (count == bp->cnt) {
826: /* Keep reading so we stay sync'd up. */
827: if (wrerr == NO) {
1.30 deraadt 828: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 829: if (j != count) {
830: wrerr = YES;
1.18 markus 831: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 832: }
833: }
834: count = 0;
835: cp = bp->buf;
836: }
837: }
1.7 deraadt 838: if (showprogress)
839: progressmeter(1);
1.1 deraadt 840: if (count != 0 && wrerr == NO &&
1.30 deraadt 841: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 842: wrerr = YES;
1.18 markus 843: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 844: }
845: #if 0
846: if (ftruncate(ofd, size)) {
847: run_err("%s: truncate: %s", np, strerror(errno));
848: wrerr = DISPLAYED;
849: }
850: #endif
851: if (pflag) {
852: if (exists || omode != mode)
853: if (fchmod(ofd, omode))
854: run_err("%s: set mode: %s",
1.18 markus 855: np, strerror(errno));
1.1 deraadt 856: } else {
857: if (!exists && omode != mode)
858: if (fchmod(ofd, omode & ~mask))
859: run_err("%s: set mode: %s",
1.18 markus 860: np, strerror(errno));
1.1 deraadt 861: }
1.33 provos 862: if (close(ofd) == -1) {
863: wrerr = YES;
864: wrerrno = errno;
865: }
1.18 markus 866: (void) response();
1.1 deraadt 867: if (setimes && wrerr == NO) {
868: setimes = 0;
1.40 markus 869: if (utimes(np, tv) < 0) {
1.1 deraadt 870: run_err("%s: set times: %s",
1.18 markus 871: np, strerror(errno));
1.1 deraadt 872: wrerr = DISPLAYED;
873: }
874: }
1.18 markus 875: switch (wrerr) {
1.1 deraadt 876: case YES:
877: run_err("%s: %s", np, strerror(wrerrno));
878: break;
879: case NO:
1.29 deraadt 880: (void) atomicio(write, remout, "", 1);
1.1 deraadt 881: break;
882: case DISPLAYED:
883: break;
884: }
885: }
886: screwup:
887: run_err("protocol error: %s", why);
888: exit(1);
889: }
890:
891: int
892: response()
893: {
894: char ch, *cp, resp, rbuf[2048];
895:
1.30 deraadt 896: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 897: lostconn(0);
898:
899: cp = rbuf;
1.18 markus 900: switch (resp) {
901: case 0: /* ok */
1.1 deraadt 902: return (0);
903: default:
904: *cp++ = resp;
905: /* FALLTHROUGH */
1.18 markus 906: case 1: /* error, followed by error msg */
907: case 2: /* fatal error, "" */
1.1 deraadt 908: do {
1.30 deraadt 909: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 910: lostconn(0);
911: *cp++ = ch;
912: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
913:
914: if (!iamremote)
1.29 deraadt 915: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 916: ++errs;
917: if (resp == 1)
918: return (-1);
919: exit(1);
920: }
921: /* NOTREACHED */
922: }
923:
924: void
925: usage()
926: {
1.34 deraadt 927: (void) fprintf(stderr, "usage: scp "
928: "[-pqrvC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2; or:\n"
929: " scp [options] f1 ... fn directory\n");
1.1 deraadt 930: exit(1);
931: }
932:
933: void
1.18 markus 934: run_err(const char *fmt,...)
1.1 deraadt 935: {
936: static FILE *fp;
937: va_list ap;
938: va_start(ap, fmt);
939:
940: ++errs;
941: if (fp == NULL && !(fp = fdopen(remout, "w")))
942: return;
1.18 markus 943: (void) fprintf(fp, "%c", 0x01);
944: (void) fprintf(fp, "scp: ");
945: (void) vfprintf(fp, fmt, ap);
946: (void) fprintf(fp, "\n");
947: (void) fflush(fp);
948:
949: if (!iamremote) {
950: vfprintf(stderr, fmt, ap);
951: fprintf(stderr, "\n");
952: }
1.1 deraadt 953: va_end(ap);
954: }
955:
956: char *
957: colon(cp)
958: char *cp;
959: {
1.23 markus 960: int flag = 0;
961:
1.1 deraadt 962: if (*cp == ':') /* Leading colon is part of file name. */
963: return (0);
1.23 markus 964: if (*cp == '[')
965: flag = 1;
1.1 deraadt 966:
967: for (; *cp; ++cp) {
1.23 markus 968: if (*cp == '@' && *(cp+1) == '[')
969: flag = 1;
970: if (*cp == ']' && *(cp+1) == ':' && flag)
971: return (cp+1);
972: if (*cp == ':' && !flag)
1.1 deraadt 973: return (cp);
974: if (*cp == '/')
975: return (0);
976: }
977: return (0);
978: }
979:
980: void
981: verifydir(cp)
982: char *cp;
983: {
984: struct stat stb;
985:
986: if (!stat(cp, &stb)) {
987: if (S_ISDIR(stb.st_mode))
988: return;
989: errno = ENOTDIR;
990: }
991: run_err("%s: %s", cp, strerror(errno));
992: exit(1);
993: }
994:
995: int
996: okname(cp0)
997: char *cp0;
998: {
999: int c;
1000: char *cp;
1001:
1002: cp = cp0;
1003: do {
1004: c = *cp;
1005: if (c & 0200)
1006: goto bad;
1.46 markus 1007: if (!isalpha(c) && !isdigit(c) &&
1008: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 1009: goto bad;
1010: } while (*++cp);
1011: return (1);
1012:
1.25 markus 1013: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1014: return (0);
1015: }
1016:
1017: BUF *
1018: allocbuf(bp, fd, blksize)
1019: BUF *bp;
1020: int fd, blksize;
1021: {
1022: size_t size;
1023: struct stat stb;
1024:
1025: if (fstat(fd, &stb) < 0) {
1026: run_err("fstat: %s", strerror(errno));
1027: return (0);
1028: }
1.18 markus 1029: if (stb.st_blksize == 0)
1030: size = blksize;
1031: else
1032: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1033: stb.st_blksize;
1.1 deraadt 1034: if (bp->cnt >= size)
1035: return (bp);
1.18 markus 1036: if (bp->buf == NULL)
1037: bp->buf = xmalloc(size);
1038: else
1039: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1040: bp->cnt = size;
1041: return (bp);
1042: }
1043:
1044: void
1045: lostconn(signo)
1046: int signo;
1047: {
1048: if (!iamremote)
1049: fprintf(stderr, "lost connection\n");
1050: exit(1);
1051: }
1.4 aaron 1052:
1.10 deraadt 1053:
1.8 deraadt 1054: void
1055: alarmtimer(int wait)
1.4 aaron 1056: {
1.18 markus 1057: struct itimerval itv;
1.4 aaron 1058:
1.18 markus 1059: itv.it_value.tv_sec = wait;
1060: itv.it_value.tv_usec = 0;
1061: itv.it_interval = itv.it_value;
1062: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1063: }
1064:
1.8 deraadt 1065: void
1.26 markus 1066: updateprogressmeter(int ignore)
1.4 aaron 1067: {
1.9 deraadt 1068: int save_errno = errno;
1069:
1.4 aaron 1070: progressmeter(0);
1.9 deraadt 1071: errno = save_errno;
1.4 aaron 1072: }
1073:
1.16 deraadt 1074: int
1075: foregroundproc()
1076: {
1077: static pid_t pgrp = -1;
1078: int ctty_pgrp;
1079:
1080: if (pgrp == -1)
1081: pgrp = getpgrp();
1082:
1.18 markus 1083: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1084: ctty_pgrp == pgrp));
1.16 deraadt 1085: }
1086:
1.8 deraadt 1087: void
1088: progressmeter(int flag)
1.4 aaron 1089: {
1090: static const char prefixes[] = " KMGTP";
1091: static struct timeval lastupdate;
1.11 aaron 1092: static off_t lastsize;
1.4 aaron 1093: struct timeval now, td, wait;
1094: off_t cursize, abbrevsize;
1095: double elapsed;
1096: int ratio, barlength, i, remaining;
1097: char buf[256];
1098:
1099: if (flag == -1) {
1.18 markus 1100: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1101: lastupdate = start;
1.11 aaron 1102: lastsize = 0;
1.18 markus 1103: }
1.16 deraadt 1104: if (foregroundproc() == 0)
1105: return;
1106:
1.18 markus 1107: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1108: cursize = statbytes;
1.13 aaron 1109: if (totalbytes != 0) {
1.21 markus 1110: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1111: ratio = MAX(ratio, 0);
1112: ratio = MIN(ratio, 100);
1.18 markus 1113: } else
1.13 aaron 1114: ratio = 100;
1115:
1.18 markus 1116: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1117:
1.11 aaron 1118: barlength = getttywidth() - 51;
1.4 aaron 1119: if (barlength > 0) {
1120: i = barlength * ratio / 100;
1121: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1122: "|%.*s%*s|", i,
1123: "*****************************************************************************"
1124: "*****************************************************************************",
1125: barlength - i, "");
1.4 aaron 1126: }
1127: i = 0;
1128: abbrevsize = cursize;
1129: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1130: i++;
1131: abbrevsize >>= 10;
1132: }
1133: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ",
1.44 deraadt 1134: (quad_t) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1135:
1136: timersub(&now, &lastupdate, &wait);
1137: if (cursize > lastsize) {
1138: lastupdate = now;
1139: lastsize = cursize;
1140: if (wait.tv_sec >= STALLTIME) {
1141: start.tv_sec += wait.tv_sec;
1142: start.tv_usec += wait.tv_usec;
1143: }
1144: wait.tv_sec = 0;
1145: }
1146: timersub(&now, &start, &td);
1.6 aaron 1147: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1148:
1.44 deraadt 1149: if (flag != 1 &&
1150: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1151: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1152: " --:-- ETA");
1.4 aaron 1153: } else if (wait.tv_sec >= STALLTIME) {
1154: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1155: " - stalled -");
1.4 aaron 1156: } else {
1.28 deraadt 1157: if (flag != 1)
1.44 deraadt 1158: remaining = (int)(totalbytes / (statbytes / elapsed) -
1159: elapsed);
1.28 deraadt 1160: else
1161: remaining = elapsed;
1162:
1.14 aaron 1163: i = remaining / 3600;
1.4 aaron 1164: if (i)
1165: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1166: "%2d:", i);
1.4 aaron 1167: else
1168: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1169: " ");
1.4 aaron 1170: i = remaining % 3600;
1171: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1172: "%02d:%02d%s", i / 60, i % 60,
1173: (flag != 1) ? " ETA" : " ");
1.4 aaron 1174: }
1.10 deraadt 1175: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1176:
1177: if (flag == -1) {
1.26 markus 1178: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1179: alarmtimer(1);
1180: } else if (flag == 1) {
1.10 deraadt 1181: alarmtimer(0);
1.29 deraadt 1182: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1183: statbytes = 0;
1.4 aaron 1184: }
1185: }
1186:
1.8 deraadt 1187: int
1188: getttywidth(void)
1.4 aaron 1189: {
1190: struct winsize winsize;
1191:
1192: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1193: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1194: else
1.18 markus 1195: return (80);
1.41 markus 1196: }
1197:
1198: void
1199: addargs(char *fmt, ...)
1200: {
1201: va_list ap;
1202: char buf[1024];
1203:
1204: va_start(ap, fmt);
1205: vsnprintf(buf, sizeof(buf), fmt, ap);
1206: va_end(ap);
1207:
1208: if (args.list == NULL) {
1209: args.nalloc = 32;
1210: args.num = 0;
1211: args.list = xmalloc(args.nalloc * sizeof(char *));
1212: } else if (args.num+2 >= args.nalloc) {
1213: args.nalloc *= 2;
1214: args.list = xrealloc(args.list, args.nalloc * sizeof(char *));
1215: }
1216: args.list[args.num++] = xstrdup(buf);
1217: args.list[args.num] = NULL;
1.4 aaron 1218: }