Annotation of src/usr.bin/ssh/scp.c, Revision 1.76
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: /*
1.60 deraadt 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"
1.76 ! itojun 78: RCSID("$OpenBSD: scp.c,v 1.75 2001/06/23 00:16:16 deraadt Exp $");
1.1 deraadt 79:
80: #include "xmalloc.h"
1.51 markus 81: #include "atomicio.h"
1.50 markus 82: #include "pathnames.h"
1.51 markus 83: #include "log.h"
1.69 mouring 84: #include "misc.h"
1.1 deraadt 85:
1.11 aaron 86: /* For progressmeter() -- number of seconds before xfer considered "stalled" */
1.4 aaron 87: #define STALLTIME 5
88:
1.11 aaron 89: /* Visual statistics about files as they are transferred. */
90: void progressmeter(int);
91:
92: /* Returns width of the terminal (for progress meter calculations). */
93: int getttywidth(void);
1.35 deraadt 94: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
1.11 aaron 95:
1.70 mouring 96: /* Struct for addargs */
97: arglist args;
1.41 markus 98:
1.11 aaron 99: /* Time a transfer started. */
1.4 aaron 100: static struct timeval start;
1.11 aaron 101:
102: /* Number of bytes of current file transferred so far. */
1.68 markus 103: volatile off_t statbytes;
1.11 aaron 104:
105: /* Total size of current file. */
1.15 markus 106: off_t totalbytes = 0;
1.11 aaron 107:
108: /* Name of current file being transferred. */
109: char *curfile;
1.4 aaron 110:
1.1 deraadt 111: /* This is set to non-zero to enable verbose mode. */
1.17 markus 112: int verbose_mode = 0;
1.1 deraadt 113:
1.6 aaron 114: /* This is set to zero if the progressmeter is not desired. */
115: int showprogress = 1;
116:
1.34 deraadt 117: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 118: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 119:
1.20 markus 120: /*
121: * This function executes the given command as the specified user on the
122: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
123: * assigns the input and output file descriptors on success.
124: */
1.1 deraadt 125:
1.27 markus 126: int
1.35 deraadt 127: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
1.1 deraadt 128: {
1.18 markus 129: int pin[2], pout[2], reserved[2];
130:
131: if (verbose_mode)
1.41 markus 132: fprintf(stderr, "Executing: program %s host %s, user %s, command %s\n",
133: ssh_program, host, remuser ? remuser : "(unspecified)", cmd);
1.18 markus 134:
1.20 markus 135: /*
136: * Reserve two descriptors so that the real pipes won't get
137: * descriptors 0 and 1 because that will screw up dup2 below.
138: */
1.18 markus 139: pipe(reserved);
140:
141: /* Create a socket pair for communicating with ssh. */
142: if (pipe(pin) < 0)
143: fatal("pipe: %s", strerror(errno));
144: if (pipe(pout) < 0)
145: fatal("pipe: %s", strerror(errno));
146:
147: /* Free the reserved descriptors. */
148: close(reserved[0]);
149: close(reserved[1]);
150:
151: /* For a child to execute the command on the remote host using ssh. */
1.41 markus 152: if (fork() == 0) {
1.18 markus 153: /* Child. */
154: close(pin[1]);
155: close(pout[0]);
156: dup2(pin[0], 0);
157: dup2(pout[1], 1);
158: close(pin[0]);
159: close(pout[1]);
160:
1.41 markus 161: args.list[0] = ssh_program;
162: if (remuser != NULL)
1.70 mouring 163: addargs(&args, "-l%s", remuser);
164: addargs(&args, "%s", host);
165: addargs(&args, "%s", cmd);
1.18 markus 166:
1.41 markus 167: execvp(ssh_program, args.list);
1.34 deraadt 168: perror(ssh_program);
1.18 markus 169: exit(1);
170: }
171: /* Parent. Close the other side, and return the local side. */
172: close(pin[0]);
173: *fdout = pin[1];
174: close(pout[1]);
175: *fdin = pout[0];
176: return 0;
1.1 deraadt 177: }
178:
179: typedef struct {
180: int cnt;
181: char *buf;
182: } BUF;
183:
1.18 markus 184: BUF *allocbuf(BUF *, int, int);
185: void lostconn(int);
186: void nospace(void);
187: int okname(char *);
188: void run_err(const char *,...);
189: void verifydir(char *);
1.1 deraadt 190:
191: struct passwd *pwd;
1.18 markus 192: uid_t userid;
1.1 deraadt 193: int errs, remin, remout;
194: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
195:
196: #define CMDNEEDS 64
197: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
198:
1.76 ! itojun 199: int main(int, char *[]);
1.18 markus 200: int response(void);
201: void rsource(char *, struct stat *);
202: void sink(int, char *[]);
203: void source(int, char *[]);
204: void tolocal(int, char *[]);
205: void toremote(char *, int, char *[]);
206: void usage(void);
1.1 deraadt 207:
208: int
209: main(argc, argv)
210: int argc;
211: char *argv[];
212: {
213: int ch, fflag, tflag;
214: char *targ;
215: extern char *optarg;
216: extern int optind;
217:
1.41 markus 218: args.list = NULL;
1.70 mouring 219: addargs(&args, "ssh"); /* overwritten with ssh_program */
220: addargs(&args, "-x");
221: addargs(&args, "-oFallBackToRsh no");
1.41 markus 222:
1.1 deraadt 223: fflag = tflag = 0;
1.49 markus 224: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
1.18 markus 225: switch (ch) {
226: /* User-visible flags. */
1.23 markus 227: case '4':
1.41 markus 228: case '6':
229: case 'C':
1.70 mouring 230: addargs(&args, "-%c", ch);
1.41 markus 231: break;
232: case 'o':
233: case 'c':
234: case 'i':
1.70 mouring 235: addargs(&args, "-%c%s", ch, optarg);
1.23 markus 236: break;
1.41 markus 237: case 'P':
1.70 mouring 238: addargs(&args, "-p%s", optarg);
1.41 markus 239: break;
240: case 'B':
1.70 mouring 241: addargs(&args, "-oBatchmode yes");
1.23 markus 242: break;
1.1 deraadt 243: case 'p':
244: pflag = 1;
245: break;
246: case 'r':
247: iamrecursive = 1;
248: break;
1.34 deraadt 249: case 'S':
1.41 markus 250: ssh_program = xstrdup(optarg);
251: break;
252: case 'v':
1.72 markus 253: addargs(&args, "-v");
1.41 markus 254: verbose_mode = 1;
255: break;
256: case 'q':
257: showprogress = 0;
1.34 deraadt 258: break;
259:
1.18 markus 260: /* Server options. */
1.1 deraadt 261: case 'd':
262: targetshouldbedirectory = 1;
263: break;
1.18 markus 264: case 'f': /* "from" */
1.1 deraadt 265: iamremote = 1;
266: fflag = 1;
267: break;
1.18 markus 268: case 't': /* "to" */
1.1 deraadt 269: iamremote = 1;
270: tflag = 1;
271: break;
272: default:
273: usage();
274: }
275: argc -= optind;
276: argv += optind;
277:
278: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 279: fatal("unknown user %d", (int) userid);
1.1 deraadt 280:
1.18 markus 281: if (!isatty(STDERR_FILENO))
1.7 deraadt 282: showprogress = 0;
283:
1.1 deraadt 284: remin = STDIN_FILENO;
285: remout = STDOUT_FILENO;
286:
1.52 stevesk 287: if (fflag) {
1.18 markus 288: /* Follow "protocol", send data. */
289: (void) response();
1.1 deraadt 290: source(argc, argv);
291: exit(errs != 0);
292: }
1.18 markus 293: if (tflag) {
294: /* Receive data. */
1.1 deraadt 295: sink(argc, argv);
296: exit(errs != 0);
297: }
298: if (argc < 2)
299: usage();
300: if (argc > 2)
301: targetshouldbedirectory = 1;
302:
303: remin = remout = -1;
304: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 305: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
306: verbose_mode ? " -v" : "",
1.35 deraadt 307: iamrecursive ? " -r" : "", pflag ? " -p" : "",
308: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 309:
1.18 markus 310: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 311:
312: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
313: toremote(targ, argc, argv);
314: else {
1.18 markus 315: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 316: if (targetshouldbedirectory)
317: verifydir(argv[argc - 1]);
318: }
319: exit(errs != 0);
320: }
321:
322: void
323: toremote(targ, argc, argv)
324: char *targ, *argv[];
325: int argc;
326: {
327: int i, len;
328: char *bp, *host, *src, *suser, *thost, *tuser;
329:
330: *targ++ = 0;
331: if (*targ == 0)
332: targ = ".";
333:
334: if ((thost = strchr(argv[argc - 1], '@'))) {
335: /* user@host */
336: *thost++ = 0;
337: tuser = argv[argc - 1];
338: if (*tuser == '\0')
339: tuser = NULL;
340: else if (!okname(tuser))
341: exit(1);
342: } else {
343: thost = argv[argc - 1];
344: tuser = NULL;
345: }
346:
347: for (i = 0; i < argc - 1; i++) {
348: src = colon(argv[i]);
1.18 markus 349: if (src) { /* remote to remote */
1.1 deraadt 350: *src++ = 0;
351: if (*src == 0)
352: src = ".";
353: host = strchr(argv[i], '@');
1.34 deraadt 354: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 355: strlen(src) + (tuser ? strlen(tuser) : 0) +
356: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 357: bp = xmalloc(len);
1.1 deraadt 358: if (host) {
359: *host++ = 0;
1.23 markus 360: host = cleanhostname(host);
1.1 deraadt 361: suser = argv[i];
362: if (*suser == '\0')
363: suser = pwd->pw_name;
364: else if (!okname(suser))
365: continue;
1.55 deraadt 366: snprintf(bp, len,
367: "%s%s -x -o'FallBackToRsh no' -n "
368: "-l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 369: ssh_program, verbose_mode ? " -v" : "",
370: suser, host, cmd, src,
371: tuser ? tuser : "", tuser ? "@" : "",
372: thost, targ);
1.23 markus 373: } else {
374: host = cleanhostname(argv[i]);
1.55 deraadt 375: snprintf(bp, len,
376: "exec %s%s -x -o'FallBackToRsh no' -n %s "
377: "%s %s '%s%s%s:%s'",
1.44 deraadt 378: ssh_program, verbose_mode ? " -v" : "",
379: host, cmd, src,
380: tuser ? tuser : "", tuser ? "@" : "",
381: thost, targ);
1.23 markus 382: }
1.18 markus 383: if (verbose_mode)
384: fprintf(stderr, "Executing: %s\n", bp);
385: (void) system(bp);
386: (void) xfree(bp);
387: } else { /* local to remote */
1.1 deraadt 388: if (remin == -1) {
389: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 390: bp = xmalloc(len);
1.55 deraadt 391: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 392: host = cleanhostname(thost);
1.35 deraadt 393: if (do_cmd(host, tuser, bp, &remin,
394: &remout, argc) < 0)
1.18 markus 395: exit(1);
1.1 deraadt 396: if (response() < 0)
397: exit(1);
1.18 markus 398: (void) xfree(bp);
1.1 deraadt 399: }
1.18 markus 400: source(1, argv + i);
1.1 deraadt 401: }
402: }
403: }
404:
405: void
406: tolocal(argc, argv)
407: int argc;
408: char *argv[];
409: {
410: int i, len;
411: char *bp, *host, *src, *suser;
412:
413: for (i = 0; i < argc - 1; i++) {
1.18 markus 414: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 415: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 416: strlen(argv[argc - 1]) + 20;
1.1 deraadt 417: bp = xmalloc(len);
1.55 deraadt 418: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 419: iamrecursive ? " -r" : "", pflag ? " -p" : "",
420: argv[i], argv[argc - 1]);
1.18 markus 421: if (verbose_mode)
422: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 423: if (system(bp))
424: ++errs;
1.18 markus 425: (void) xfree(bp);
1.1 deraadt 426: continue;
427: }
428: *src++ = 0;
429: if (*src == 0)
430: src = ".";
431: if ((host = strchr(argv[i], '@')) == NULL) {
432: host = argv[i];
433: suser = NULL;
434: } else {
435: *host++ = 0;
436: suser = argv[i];
437: if (*suser == '\0')
438: suser = pwd->pw_name;
439: else if (!okname(suser))
440: continue;
441: }
1.23 markus 442: host = cleanhostname(host);
1.1 deraadt 443: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 444: bp = xmalloc(len);
1.55 deraadt 445: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 446: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 447: (void) xfree(bp);
448: ++errs;
449: continue;
1.1 deraadt 450: }
1.18 markus 451: xfree(bp);
1.1 deraadt 452: sink(1, argv + argc - 1);
1.18 markus 453: (void) close(remin);
1.1 deraadt 454: remin = remout = -1;
455: }
456: }
457:
458: void
459: source(argc, argv)
460: int argc;
461: char *argv[];
462: {
463: struct stat stb;
464: static BUF buffer;
465: BUF *bp;
1.68 markus 466: off_t i, amt, result;
467: int fd, haderr, indx;
1.1 deraadt 468: char *last, *name, buf[2048];
1.65 deraadt 469: int len;
1.1 deraadt 470:
471: for (indx = 0; indx < argc; ++indx) {
1.18 markus 472: name = argv[indx];
1.11 aaron 473: statbytes = 0;
1.65 deraadt 474: len = strlen(name);
475: while (len > 1 && name[len-1] == '/')
476: name[--len] = '\0';
1.1 deraadt 477: if ((fd = open(name, O_RDONLY, 0)) < 0)
478: goto syserr;
479: if (fstat(fd, &stb) < 0) {
480: syserr: run_err("%s: %s", name, strerror(errno));
481: goto next;
482: }
483: switch (stb.st_mode & S_IFMT) {
484: case S_IFREG:
485: break;
486: case S_IFDIR:
487: if (iamrecursive) {
488: rsource(name, &stb);
489: goto next;
490: }
491: /* FALLTHROUGH */
492: default:
493: run_err("%s: not a regular file", name);
494: goto next;
495: }
496: if ((last = strrchr(name, '/')) == NULL)
497: last = name;
498: else
499: ++last;
1.11 aaron 500: curfile = last;
1.1 deraadt 501: if (pflag) {
502: /*
503: * Make it compatible with possible future
504: * versions expecting microseconds.
505: */
1.55 deraadt 506: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 507: (u_long) stb.st_mtime,
508: (u_long) stb.st_atime);
1.29 deraadt 509: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 510: if (response() < 0)
511: goto next;
512: }
513: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 514: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 515: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 516: (long long)stb.st_size, last);
1.18 markus 517: if (verbose_mode) {
518: fprintf(stderr, "Sending file modes: %s", buf);
519: fflush(stderr);
520: }
1.29 deraadt 521: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 522: if (response() < 0)
523: goto next;
524: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 525: next: (void) close(fd);
1.1 deraadt 526: continue;
527: }
1.12 aaron 528: if (showprogress) {
529: totalbytes = stb.st_size;
1.6 aaron 530: progressmeter(-1);
1.12 aaron 531: }
1.1 deraadt 532: /* Keep writing after an error so that we stay sync'd up. */
533: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
534: amt = bp->cnt;
535: if (i + amt > stb.st_size)
536: amt = stb.st_size - i;
537: if (!haderr) {
1.30 deraadt 538: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 539: if (result != amt)
540: haderr = result >= 0 ? EIO : errno;
541: }
542: if (haderr)
1.29 deraadt 543: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 544: else {
1.29 deraadt 545: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 546: if (result != amt)
547: haderr = result >= 0 ? EIO : errno;
1.4 aaron 548: statbytes += result;
1.1 deraadt 549: }
550: }
1.18 markus 551: if (showprogress)
1.6 aaron 552: progressmeter(1);
1.4 aaron 553:
1.1 deraadt 554: if (close(fd) < 0 && !haderr)
555: haderr = errno;
556: if (!haderr)
1.29 deraadt 557: (void) atomicio(write, remout, "", 1);
1.1 deraadt 558: else
559: run_err("%s: %s", name, strerror(haderr));
1.18 markus 560: (void) response();
1.1 deraadt 561: }
562: }
563:
564: void
565: rsource(name, statp)
566: char *name;
567: struct stat *statp;
568: {
569: DIR *dirp;
570: struct dirent *dp;
571: char *last, *vect[1], path[1100];
572:
573: if (!(dirp = opendir(name))) {
574: run_err("%s: %s", name, strerror(errno));
575: return;
576: }
577: last = strrchr(name, '/');
578: if (last == 0)
579: last = name;
580: else
581: last++;
582: if (pflag) {
1.55 deraadt 583: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 584: (u_long) statp->st_mtime,
585: (u_long) statp->st_atime);
1.29 deraadt 586: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 587: if (response() < 0) {
588: closedir(dirp);
589: return;
590: }
591: }
1.55 deraadt 592: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 593: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 594: if (verbose_mode)
595: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 596: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 597: if (response() < 0) {
598: closedir(dirp);
599: return;
600: }
1.63 stevesk 601: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 602: if (dp->d_ino == 0)
603: continue;
604: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
605: continue;
606: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
607: run_err("%s/%s: name too long", name, dp->d_name);
608: continue;
609: }
1.55 deraadt 610: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 611: vect[0] = path;
612: source(1, vect);
613: }
1.18 markus 614: (void) closedir(dirp);
1.29 deraadt 615: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 616: (void) response();
1.1 deraadt 617: }
618:
619: void
620: sink(argc, argv)
621: int argc;
622: char *argv[];
623: {
624: static BUF buffer;
625: struct stat stb;
1.18 markus 626: enum {
627: YES, NO, DISPLAYED
628: } wrerr;
1.1 deraadt 629: BUF *bp;
630: off_t i, j;
631: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 632: off_t size;
633: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 634: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 635: struct timeval tv[2];
1.1 deraadt 636:
1.66 stevesk 637: #define atime tv[0]
638: #define mtime tv[1]
1.75 deraadt 639: #define SCREWUP(str) do { why = str; goto screwup; } while (0)
1.1 deraadt 640:
641: setimes = targisdir = 0;
642: mask = umask(0);
643: if (!pflag)
1.18 markus 644: (void) umask(mask);
1.1 deraadt 645: if (argc != 1) {
646: run_err("ambiguous target");
647: exit(1);
648: }
649: targ = *argv;
650: if (targetshouldbedirectory)
651: verifydir(targ);
1.18 markus 652:
1.29 deraadt 653: (void) atomicio(write, remout, "", 1);
1.1 deraadt 654: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
655: targisdir = 1;
656: for (first = 1;; first = 0) {
657: cp = buf;
1.30 deraadt 658: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 659: return;
660: if (*cp++ == '\n')
661: SCREWUP("unexpected <newline>");
662: do {
1.30 deraadt 663: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 664: SCREWUP("lost connection");
665: *cp++ = ch;
666: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
667: *cp = 0;
668:
669: if (buf[0] == '\01' || buf[0] == '\02') {
670: if (iamremote == 0)
1.29 deraadt 671: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 672: buf + 1, strlen(buf + 1));
1.1 deraadt 673: if (buf[0] == '\02')
674: exit(1);
675: ++errs;
676: continue;
677: }
678: if (buf[0] == 'E') {
1.29 deraadt 679: (void) atomicio(write, remout, "", 1);
1.1 deraadt 680: return;
681: }
682: if (ch == '\n')
683: *--cp = 0;
684:
685: cp = buf;
686: if (*cp == 'T') {
687: setimes++;
688: cp++;
1.66 stevesk 689: mtime.tv_sec = strtol(cp, &cp, 10);
690: if (!cp || *cp++ != ' ')
1.1 deraadt 691: SCREWUP("mtime.sec not delimited");
1.66 stevesk 692: mtime.tv_usec = strtol(cp, &cp, 10);
693: if (!cp || *cp++ != ' ')
1.1 deraadt 694: SCREWUP("mtime.usec not delimited");
1.66 stevesk 695: atime.tv_sec = strtol(cp, &cp, 10);
696: if (!cp || *cp++ != ' ')
1.1 deraadt 697: SCREWUP("atime.sec not delimited");
1.66 stevesk 698: atime.tv_usec = strtol(cp, &cp, 10);
699: if (!cp || *cp++ != '\0')
1.1 deraadt 700: SCREWUP("atime.usec not delimited");
1.29 deraadt 701: (void) atomicio(write, remout, "", 1);
1.1 deraadt 702: continue;
703: }
704: if (*cp != 'C' && *cp != 'D') {
705: /*
706: * Check for the case "rcp remote:foo\* local:bar".
707: * In this case, the line "No match." can be returned
708: * by the shell before the rcp command on the remote is
709: * executed so the ^Aerror_message convention isn't
710: * followed.
711: */
712: if (first) {
713: run_err("%s", cp);
714: exit(1);
715: }
716: SCREWUP("expected control record");
717: }
718: mode = 0;
719: for (++cp; cp < buf + 5; cp++) {
720: if (*cp < '0' || *cp > '7')
721: SCREWUP("bad mode");
722: mode = (mode << 3) | (*cp - '0');
723: }
724: if (*cp++ != ' ')
725: SCREWUP("mode not delimited");
726:
1.63 stevesk 727: for (size = 0; isdigit(*cp);)
1.1 deraadt 728: size = size * 10 + (*cp++ - '0');
729: if (*cp++ != ' ')
730: SCREWUP("size not delimited");
731: if (targisdir) {
732: static char *namebuf;
733: static int cursize;
734: size_t need;
735:
736: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 737: if (need > cursize) {
1.58 danh 738: if (namebuf)
739: xfree(namebuf);
1.18 markus 740: namebuf = xmalloc(need);
1.55 deraadt 741: cursize = need;
742: }
743: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.35 deraadt 744: *targ ? "/" : "", cp);
1.1 deraadt 745: np = namebuf;
746: } else
747: np = targ;
1.12 aaron 748: curfile = cp;
1.1 deraadt 749: exists = stat(np, &stb) == 0;
750: if (buf[0] == 'D') {
751: int mod_flag = pflag;
752: if (exists) {
753: if (!S_ISDIR(stb.st_mode)) {
754: errno = ENOTDIR;
755: goto bad;
756: }
757: if (pflag)
1.18 markus 758: (void) chmod(np, mode);
1.1 deraadt 759: } else {
1.18 markus 760: /* Handle copying from a read-only
761: directory */
1.1 deraadt 762: mod_flag = 1;
763: if (mkdir(np, mode | S_IRWXU) < 0)
764: goto bad;
765: }
1.58 danh 766: vect[0] = xstrdup(np);
1.1 deraadt 767: sink(1, vect);
768: if (setimes) {
769: setimes = 0;
1.59 deraadt 770: if (utimes(vect[0], tv) < 0)
1.18 markus 771: run_err("%s: set times: %s",
1.59 deraadt 772: vect[0], strerror(errno));
1.1 deraadt 773: }
774: if (mod_flag)
1.59 deraadt 775: (void) chmod(vect[0], mode);
776: if (vect[0])
777: xfree(vect[0]);
1.1 deraadt 778: continue;
779: }
780: omode = mode;
781: mode |= S_IWRITE;
1.71 markus 782: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 783: bad: run_err("%s: %s", np, strerror(errno));
784: continue;
785: }
1.29 deraadt 786: (void) atomicio(write, remout, "", 1);
1.1 deraadt 787: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 788: (void) close(ofd);
1.1 deraadt 789: continue;
790: }
791: cp = bp->buf;
792: wrerr = NO;
1.7 deraadt 793:
794: if (showprogress) {
795: totalbytes = size;
796: progressmeter(-1);
797: }
1.12 aaron 798: statbytes = 0;
1.1 deraadt 799: for (count = i = 0; i < size; i += 4096) {
800: amt = 4096;
801: if (i + amt > size)
802: amt = size - i;
803: count += amt;
804: do {
1.43 markus 805: j = read(remin, cp, amt);
806: if (j == -1 && (errno == EINTR || errno == EAGAIN)) {
807: continue;
808: } else if (j <= 0) {
1.1 deraadt 809: run_err("%s", j ? strerror(errno) :
1.63 stevesk 810: "dropped connection");
1.1 deraadt 811: exit(1);
812: }
813: amt -= j;
814: cp += j;
1.18 markus 815: statbytes += j;
1.1 deraadt 816: } while (amt > 0);
817: if (count == bp->cnt) {
818: /* Keep reading so we stay sync'd up. */
819: if (wrerr == NO) {
1.30 deraadt 820: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 821: if (j != count) {
822: wrerr = YES;
1.18 markus 823: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 824: }
825: }
826: count = 0;
827: cp = bp->buf;
828: }
829: }
1.7 deraadt 830: if (showprogress)
831: progressmeter(1);
1.1 deraadt 832: if (count != 0 && wrerr == NO &&
1.30 deraadt 833: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 834: wrerr = YES;
1.18 markus 835: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 836: }
837: if (ftruncate(ofd, size)) {
838: run_err("%s: truncate: %s", np, strerror(errno));
839: wrerr = DISPLAYED;
840: }
841: if (pflag) {
842: if (exists || omode != mode)
843: if (fchmod(ofd, omode))
844: run_err("%s: set mode: %s",
1.63 stevesk 845: np, strerror(errno));
1.1 deraadt 846: } else {
847: if (!exists && omode != mode)
848: if (fchmod(ofd, omode & ~mask))
849: run_err("%s: set mode: %s",
1.63 stevesk 850: np, strerror(errno));
1.1 deraadt 851: }
1.33 provos 852: if (close(ofd) == -1) {
853: wrerr = YES;
854: wrerrno = errno;
855: }
1.18 markus 856: (void) response();
1.1 deraadt 857: if (setimes && wrerr == NO) {
858: setimes = 0;
1.40 markus 859: if (utimes(np, tv) < 0) {
1.1 deraadt 860: run_err("%s: set times: %s",
1.63 stevesk 861: np, strerror(errno));
1.1 deraadt 862: wrerr = DISPLAYED;
863: }
864: }
1.18 markus 865: switch (wrerr) {
1.1 deraadt 866: case YES:
867: run_err("%s: %s", np, strerror(wrerrno));
868: break;
869: case NO:
1.29 deraadt 870: (void) atomicio(write, remout, "", 1);
1.1 deraadt 871: break;
872: case DISPLAYED:
873: break;
874: }
875: }
876: screwup:
877: run_err("protocol error: %s", why);
878: exit(1);
879: }
880:
881: int
882: response()
883: {
884: char ch, *cp, resp, rbuf[2048];
885:
1.30 deraadt 886: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 887: lostconn(0);
888:
889: cp = rbuf;
1.18 markus 890: switch (resp) {
891: case 0: /* ok */
1.1 deraadt 892: return (0);
893: default:
894: *cp++ = resp;
895: /* FALLTHROUGH */
1.18 markus 896: case 1: /* error, followed by error msg */
897: case 2: /* fatal error, "" */
1.1 deraadt 898: do {
1.30 deraadt 899: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 900: lostconn(0);
901: *cp++ = ch;
902: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
903:
904: if (!iamremote)
1.29 deraadt 905: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 906: ++errs;
907: if (resp == 1)
908: return (-1);
909: exit(1);
910: }
911: /* NOTREACHED */
912: }
913:
914: void
915: usage()
916: {
1.34 deraadt 917: (void) fprintf(stderr, "usage: scp "
1.64 stevesk 918: "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2\n"
919: " or: scp [options] f1 ... fn directory\n");
1.1 deraadt 920: exit(1);
921: }
922:
923: void
1.18 markus 924: run_err(const char *fmt,...)
1.1 deraadt 925: {
926: static FILE *fp;
927: va_list ap;
928:
929: ++errs;
930: if (fp == NULL && !(fp = fdopen(remout, "w")))
931: return;
1.18 markus 932: (void) fprintf(fp, "%c", 0x01);
933: (void) fprintf(fp, "scp: ");
1.73 markus 934: va_start(ap, fmt);
1.18 markus 935: (void) vfprintf(fp, fmt, ap);
1.73 markus 936: va_end(ap);
1.18 markus 937: (void) fprintf(fp, "\n");
938: (void) fflush(fp);
939:
940: if (!iamremote) {
1.73 markus 941: va_start(ap, fmt);
1.18 markus 942: vfprintf(stderr, fmt, ap);
1.73 markus 943: va_end(ap);
1.18 markus 944: fprintf(stderr, "\n");
945: }
1.1 deraadt 946: }
947:
948: void
949: verifydir(cp)
950: char *cp;
951: {
952: struct stat stb;
953:
954: if (!stat(cp, &stb)) {
955: if (S_ISDIR(stb.st_mode))
956: return;
957: errno = ENOTDIR;
958: }
959: run_err("%s: %s", cp, strerror(errno));
960: exit(1);
961: }
962:
963: int
964: okname(cp0)
965: char *cp0;
966: {
967: int c;
968: char *cp;
969:
970: cp = cp0;
971: do {
1.75 deraadt 972: c = (int)*cp;
1.1 deraadt 973: if (c & 0200)
974: goto bad;
1.46 markus 975: if (!isalpha(c) && !isdigit(c) &&
976: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 977: goto bad;
978: } while (*++cp);
979: return (1);
980:
1.25 markus 981: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 982: return (0);
983: }
984:
985: BUF *
986: allocbuf(bp, fd, blksize)
987: BUF *bp;
988: int fd, blksize;
989: {
990: size_t size;
991: struct stat stb;
992:
993: if (fstat(fd, &stb) < 0) {
994: run_err("fstat: %s", strerror(errno));
995: return (0);
996: }
1.18 markus 997: if (stb.st_blksize == 0)
998: size = blksize;
999: else
1000: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1001: stb.st_blksize;
1.1 deraadt 1002: if (bp->cnt >= size)
1003: return (bp);
1.18 markus 1004: if (bp->buf == NULL)
1005: bp->buf = xmalloc(size);
1006: else
1007: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1008: bp->cnt = size;
1009: return (bp);
1010: }
1011:
1012: void
1013: lostconn(signo)
1014: int signo;
1015: {
1016: if (!iamremote)
1.74 markus 1017: write(STDERR_FILENO, "lost connection\n", 16);
1018: if (signo)
1019: _exit(1);
1020: else
1021: exit(1);
1.1 deraadt 1022: }
1.4 aaron 1023:
1.10 deraadt 1024:
1.76 ! itojun 1025: static void
1.8 deraadt 1026: alarmtimer(int wait)
1.4 aaron 1027: {
1.18 markus 1028: struct itimerval itv;
1.4 aaron 1029:
1.18 markus 1030: itv.it_value.tv_sec = wait;
1031: itv.it_value.tv_usec = 0;
1032: itv.it_interval = itv.it_value;
1033: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1034: }
1035:
1.76 ! itojun 1036: static void
1.26 markus 1037: updateprogressmeter(int ignore)
1.4 aaron 1038: {
1.9 deraadt 1039: int save_errno = errno;
1040:
1.4 aaron 1041: progressmeter(0);
1.9 deraadt 1042: errno = save_errno;
1.4 aaron 1043: }
1044:
1.76 ! itojun 1045: static int
1.56 itojun 1046: foregroundproc(void)
1.16 deraadt 1047: {
1048: static pid_t pgrp = -1;
1049: int ctty_pgrp;
1050:
1051: if (pgrp == -1)
1052: pgrp = getpgrp();
1053:
1.18 markus 1054: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1055: ctty_pgrp == pgrp));
1.16 deraadt 1056: }
1057:
1.8 deraadt 1058: void
1059: progressmeter(int flag)
1.4 aaron 1060: {
1061: static const char prefixes[] = " KMGTP";
1062: static struct timeval lastupdate;
1.11 aaron 1063: static off_t lastsize;
1.4 aaron 1064: struct timeval now, td, wait;
1065: off_t cursize, abbrevsize;
1066: double elapsed;
1067: int ratio, barlength, i, remaining;
1068: char buf[256];
1069:
1070: if (flag == -1) {
1.18 markus 1071: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1072: lastupdate = start;
1.11 aaron 1073: lastsize = 0;
1.18 markus 1074: }
1.16 deraadt 1075: if (foregroundproc() == 0)
1076: return;
1077:
1.18 markus 1078: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1079: cursize = statbytes;
1.13 aaron 1080: if (totalbytes != 0) {
1.21 markus 1081: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1082: ratio = MAX(ratio, 0);
1083: ratio = MIN(ratio, 100);
1.18 markus 1084: } else
1.13 aaron 1085: ratio = 100;
1086:
1.18 markus 1087: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1088:
1.11 aaron 1089: barlength = getttywidth() - 51;
1.4 aaron 1090: if (barlength > 0) {
1091: i = barlength * ratio / 100;
1092: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1093: "|%.*s%*s|", i,
1094: "*****************************************************************************"
1095: "*****************************************************************************",
1096: barlength - i, "");
1.4 aaron 1097: }
1098: i = 0;
1099: abbrevsize = cursize;
1100: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1101: i++;
1102: abbrevsize >>= 10;
1103: }
1.54 itojun 1104: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1105: (unsigned long long) abbrevsize, prefixes[i],
1106: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1107:
1108: timersub(&now, &lastupdate, &wait);
1109: if (cursize > lastsize) {
1110: lastupdate = now;
1111: lastsize = cursize;
1112: if (wait.tv_sec >= STALLTIME) {
1113: start.tv_sec += wait.tv_sec;
1114: start.tv_usec += wait.tv_usec;
1115: }
1116: wait.tv_sec = 0;
1117: }
1118: timersub(&now, &start, &td);
1.6 aaron 1119: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1120:
1.44 deraadt 1121: if (flag != 1 &&
1122: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1123: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1124: " --:-- ETA");
1.4 aaron 1125: } else if (wait.tv_sec >= STALLTIME) {
1126: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1127: " - stalled -");
1.4 aaron 1128: } else {
1.28 deraadt 1129: if (flag != 1)
1.44 deraadt 1130: remaining = (int)(totalbytes / (statbytes / elapsed) -
1131: elapsed);
1.28 deraadt 1132: else
1133: remaining = elapsed;
1134:
1.14 aaron 1135: i = remaining / 3600;
1.4 aaron 1136: if (i)
1137: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1138: "%2d:", i);
1.4 aaron 1139: else
1140: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1141: " ");
1.4 aaron 1142: i = remaining % 3600;
1143: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1144: "%02d:%02d%s", i / 60, i % 60,
1145: (flag != 1) ? " ETA" : " ");
1.4 aaron 1146: }
1.10 deraadt 1147: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1148:
1149: if (flag == -1) {
1.26 markus 1150: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1151: alarmtimer(1);
1152: } else if (flag == 1) {
1.10 deraadt 1153: alarmtimer(0);
1.29 deraadt 1154: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1155: statbytes = 0;
1.4 aaron 1156: }
1157: }
1158:
1.8 deraadt 1159: int
1160: getttywidth(void)
1.4 aaron 1161: {
1162: struct winsize winsize;
1163:
1164: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1165: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1166: else
1.18 markus 1167: return (80);
1.4 aaron 1168: }
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