Annotation of src/usr.bin/ssh/scp.c, Revision 1.71
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"
1.71 ! markus 78: RCSID("$OpenBSD: scp.c,v 1.70 2001/05/08 19:45:24 mouring 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:
1.18 markus 199: int response(void);
200: void rsource(char *, struct stat *);
201: void sink(int, char *[]);
202: void source(int, char *[]);
203: void tolocal(int, char *[]);
204: void toremote(char *, int, char *[]);
205: void usage(void);
1.1 deraadt 206:
207: int
208: main(argc, argv)
209: int argc;
210: char *argv[];
211: {
212: int ch, fflag, tflag;
213: char *targ;
214: extern char *optarg;
215: extern int optind;
216:
1.41 markus 217: args.list = NULL;
1.70 mouring 218: addargs(&args, "ssh"); /* overwritten with ssh_program */
219: addargs(&args, "-x");
220: addargs(&args, "-oFallBackToRsh no");
1.41 markus 221:
1.1 deraadt 222: fflag = tflag = 0;
1.49 markus 223: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
1.18 markus 224: switch (ch) {
225: /* User-visible flags. */
1.23 markus 226: case '4':
1.41 markus 227: case '6':
228: case 'C':
1.70 mouring 229: addargs(&args, "-%c", ch);
1.41 markus 230: break;
231: case 'o':
232: case 'c':
233: case 'i':
1.70 mouring 234: addargs(&args, "-%c%s", ch, optarg);
1.23 markus 235: break;
1.41 markus 236: case 'P':
1.70 mouring 237: addargs(&args, "-p%s", optarg);
1.41 markus 238: break;
239: case 'B':
1.70 mouring 240: addargs(&args, "-oBatchmode yes");
1.23 markus 241: break;
1.1 deraadt 242: case 'p':
243: pflag = 1;
244: break;
245: case 'r':
246: iamrecursive = 1;
247: break;
1.34 deraadt 248: case 'S':
1.41 markus 249: ssh_program = xstrdup(optarg);
250: break;
251: case 'v':
252: verbose_mode = 1;
253: break;
254: case 'q':
255: showprogress = 0;
1.34 deraadt 256: break;
257:
1.18 markus 258: /* Server options. */
1.1 deraadt 259: case 'd':
260: targetshouldbedirectory = 1;
261: break;
1.18 markus 262: case 'f': /* "from" */
1.1 deraadt 263: iamremote = 1;
264: fflag = 1;
265: break;
1.18 markus 266: case 't': /* "to" */
1.1 deraadt 267: iamremote = 1;
268: tflag = 1;
269: break;
270: default:
271: usage();
272: }
273: argc -= optind;
274: argv += optind;
275:
276: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 277: fatal("unknown user %d", (int) userid);
1.1 deraadt 278:
1.18 markus 279: if (!isatty(STDERR_FILENO))
1.7 deraadt 280: showprogress = 0;
281:
1.1 deraadt 282: remin = STDIN_FILENO;
283: remout = STDOUT_FILENO;
284:
1.52 stevesk 285: if (fflag) {
1.18 markus 286: /* Follow "protocol", send data. */
287: (void) response();
1.1 deraadt 288: source(argc, argv);
289: exit(errs != 0);
290: }
1.18 markus 291: if (tflag) {
292: /* Receive data. */
1.1 deraadt 293: sink(argc, argv);
294: exit(errs != 0);
295: }
296: if (argc < 2)
297: usage();
298: if (argc > 2)
299: targetshouldbedirectory = 1;
300:
301: remin = remout = -1;
302: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 303: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
304: verbose_mode ? " -v" : "",
1.35 deraadt 305: iamrecursive ? " -r" : "", pflag ? " -p" : "",
306: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 307:
1.18 markus 308: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 309:
310: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
311: toremote(targ, argc, argv);
312: else {
1.18 markus 313: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 314: if (targetshouldbedirectory)
315: verifydir(argv[argc - 1]);
316: }
317: exit(errs != 0);
318: }
319:
320: void
321: toremote(targ, argc, argv)
322: char *targ, *argv[];
323: int argc;
324: {
325: int i, len;
326: char *bp, *host, *src, *suser, *thost, *tuser;
327:
328: *targ++ = 0;
329: if (*targ == 0)
330: targ = ".";
331:
332: if ((thost = strchr(argv[argc - 1], '@'))) {
333: /* user@host */
334: *thost++ = 0;
335: tuser = argv[argc - 1];
336: if (*tuser == '\0')
337: tuser = NULL;
338: else if (!okname(tuser))
339: exit(1);
340: } else {
341: thost = argv[argc - 1];
342: tuser = NULL;
343: }
344:
345: for (i = 0; i < argc - 1; i++) {
346: src = colon(argv[i]);
1.18 markus 347: if (src) { /* remote to remote */
1.1 deraadt 348: *src++ = 0;
349: if (*src == 0)
350: src = ".";
351: host = strchr(argv[i], '@');
1.34 deraadt 352: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 353: strlen(src) + (tuser ? strlen(tuser) : 0) +
354: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 355: bp = xmalloc(len);
1.1 deraadt 356: if (host) {
357: *host++ = 0;
1.23 markus 358: host = cleanhostname(host);
1.1 deraadt 359: suser = argv[i];
360: if (*suser == '\0')
361: suser = pwd->pw_name;
362: else if (!okname(suser))
363: continue;
1.55 deraadt 364: snprintf(bp, len,
365: "%s%s -x -o'FallBackToRsh no' -n "
366: "-l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 367: ssh_program, verbose_mode ? " -v" : "",
368: suser, host, cmd, src,
369: tuser ? tuser : "", tuser ? "@" : "",
370: thost, targ);
1.23 markus 371: } else {
372: host = cleanhostname(argv[i]);
1.55 deraadt 373: snprintf(bp, len,
374: "exec %s%s -x -o'FallBackToRsh no' -n %s "
375: "%s %s '%s%s%s:%s'",
1.44 deraadt 376: ssh_program, verbose_mode ? " -v" : "",
377: host, cmd, src,
378: tuser ? tuser : "", tuser ? "@" : "",
379: thost, targ);
1.23 markus 380: }
1.18 markus 381: if (verbose_mode)
382: fprintf(stderr, "Executing: %s\n", bp);
383: (void) system(bp);
384: (void) xfree(bp);
385: } else { /* local to remote */
1.1 deraadt 386: if (remin == -1) {
387: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 388: bp = xmalloc(len);
1.55 deraadt 389: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 390: host = cleanhostname(thost);
1.35 deraadt 391: if (do_cmd(host, tuser, bp, &remin,
392: &remout, argc) < 0)
1.18 markus 393: exit(1);
1.1 deraadt 394: if (response() < 0)
395: exit(1);
1.18 markus 396: (void) xfree(bp);
1.1 deraadt 397: }
1.18 markus 398: source(1, argv + i);
1.1 deraadt 399: }
400: }
401: }
402:
403: void
404: tolocal(argc, argv)
405: int argc;
406: char *argv[];
407: {
408: int i, len;
409: char *bp, *host, *src, *suser;
410:
411: for (i = 0; i < argc - 1; i++) {
1.18 markus 412: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 413: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 414: strlen(argv[argc - 1]) + 20;
1.1 deraadt 415: bp = xmalloc(len);
1.55 deraadt 416: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 417: iamrecursive ? " -r" : "", pflag ? " -p" : "",
418: argv[i], argv[argc - 1]);
1.18 markus 419: if (verbose_mode)
420: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 421: if (system(bp))
422: ++errs;
1.18 markus 423: (void) xfree(bp);
1.1 deraadt 424: continue;
425: }
426: *src++ = 0;
427: if (*src == 0)
428: src = ".";
429: if ((host = strchr(argv[i], '@')) == NULL) {
430: host = argv[i];
431: suser = NULL;
432: } else {
433: *host++ = 0;
434: suser = argv[i];
435: if (*suser == '\0')
436: suser = pwd->pw_name;
437: else if (!okname(suser))
438: continue;
439: }
1.23 markus 440: host = cleanhostname(host);
1.1 deraadt 441: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 442: bp = xmalloc(len);
1.55 deraadt 443: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 444: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 445: (void) xfree(bp);
446: ++errs;
447: continue;
1.1 deraadt 448: }
1.18 markus 449: xfree(bp);
1.1 deraadt 450: sink(1, argv + argc - 1);
1.18 markus 451: (void) close(remin);
1.1 deraadt 452: remin = remout = -1;
453: }
454: }
455:
456: void
457: source(argc, argv)
458: int argc;
459: char *argv[];
460: {
461: struct stat stb;
462: static BUF buffer;
463: BUF *bp;
1.68 markus 464: off_t i, amt, result;
465: int fd, haderr, indx;
1.1 deraadt 466: char *last, *name, buf[2048];
1.65 deraadt 467: int len;
1.1 deraadt 468:
469: for (indx = 0; indx < argc; ++indx) {
1.18 markus 470: name = argv[indx];
1.11 aaron 471: statbytes = 0;
1.65 deraadt 472: len = strlen(name);
473: while (len > 1 && name[len-1] == '/')
474: name[--len] = '\0';
1.1 deraadt 475: if ((fd = open(name, O_RDONLY, 0)) < 0)
476: goto syserr;
477: if (fstat(fd, &stb) < 0) {
478: syserr: run_err("%s: %s", name, strerror(errno));
479: goto next;
480: }
481: switch (stb.st_mode & S_IFMT) {
482: case S_IFREG:
483: break;
484: case S_IFDIR:
485: if (iamrecursive) {
486: rsource(name, &stb);
487: goto next;
488: }
489: /* FALLTHROUGH */
490: default:
491: run_err("%s: not a regular file", name);
492: goto next;
493: }
494: if ((last = strrchr(name, '/')) == NULL)
495: last = name;
496: else
497: ++last;
1.11 aaron 498: curfile = last;
1.1 deraadt 499: if (pflag) {
500: /*
501: * Make it compatible with possible future
502: * versions expecting microseconds.
503: */
1.55 deraadt 504: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 505: (u_long) stb.st_mtime,
506: (u_long) stb.st_atime);
1.29 deraadt 507: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 508: if (response() < 0)
509: goto next;
510: }
511: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 512: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 513: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 514: (long long)stb.st_size, last);
1.18 markus 515: if (verbose_mode) {
516: fprintf(stderr, "Sending file modes: %s", buf);
517: fflush(stderr);
518: }
1.29 deraadt 519: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 520: if (response() < 0)
521: goto next;
522: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 523: next: (void) close(fd);
1.1 deraadt 524: continue;
525: }
1.12 aaron 526: if (showprogress) {
527: totalbytes = stb.st_size;
1.6 aaron 528: progressmeter(-1);
1.12 aaron 529: }
1.1 deraadt 530: /* Keep writing after an error so that we stay sync'd up. */
531: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
532: amt = bp->cnt;
533: if (i + amt > stb.st_size)
534: amt = stb.st_size - i;
535: if (!haderr) {
1.30 deraadt 536: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 537: if (result != amt)
538: haderr = result >= 0 ? EIO : errno;
539: }
540: if (haderr)
1.29 deraadt 541: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 542: else {
1.29 deraadt 543: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 544: if (result != amt)
545: haderr = result >= 0 ? EIO : errno;
1.4 aaron 546: statbytes += result;
1.1 deraadt 547: }
548: }
1.18 markus 549: if (showprogress)
1.6 aaron 550: progressmeter(1);
1.4 aaron 551:
1.1 deraadt 552: if (close(fd) < 0 && !haderr)
553: haderr = errno;
554: if (!haderr)
1.29 deraadt 555: (void) atomicio(write, remout, "", 1);
1.1 deraadt 556: else
557: run_err("%s: %s", name, strerror(haderr));
1.18 markus 558: (void) response();
1.1 deraadt 559: }
560: }
561:
562: void
563: rsource(name, statp)
564: char *name;
565: struct stat *statp;
566: {
567: DIR *dirp;
568: struct dirent *dp;
569: char *last, *vect[1], path[1100];
570:
571: if (!(dirp = opendir(name))) {
572: run_err("%s: %s", name, strerror(errno));
573: return;
574: }
575: last = strrchr(name, '/');
576: if (last == 0)
577: last = name;
578: else
579: last++;
580: if (pflag) {
1.55 deraadt 581: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 582: (u_long) statp->st_mtime,
583: (u_long) statp->st_atime);
1.29 deraadt 584: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 585: if (response() < 0) {
586: closedir(dirp);
587: return;
588: }
589: }
1.55 deraadt 590: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 591: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 592: if (verbose_mode)
593: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 594: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 595: if (response() < 0) {
596: closedir(dirp);
597: return;
598: }
1.63 stevesk 599: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 600: if (dp->d_ino == 0)
601: continue;
602: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
603: continue;
604: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
605: run_err("%s/%s: name too long", name, dp->d_name);
606: continue;
607: }
1.55 deraadt 608: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 609: vect[0] = path;
610: source(1, vect);
611: }
1.18 markus 612: (void) closedir(dirp);
1.29 deraadt 613: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 614: (void) response();
1.1 deraadt 615: }
616:
617: void
618: sink(argc, argv)
619: int argc;
620: char *argv[];
621: {
622: static BUF buffer;
623: struct stat stb;
1.18 markus 624: enum {
625: YES, NO, DISPLAYED
626: } wrerr;
1.1 deraadt 627: BUF *bp;
628: off_t i, j;
629: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 630: off_t size;
631: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 632: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 633: struct timeval tv[2];
1.1 deraadt 634:
1.66 stevesk 635: #define atime tv[0]
636: #define mtime tv[1]
1.1 deraadt 637: #define SCREWUP(str) { why = str; goto screwup; }
638:
639: setimes = targisdir = 0;
640: mask = umask(0);
641: if (!pflag)
1.18 markus 642: (void) umask(mask);
1.1 deraadt 643: if (argc != 1) {
644: run_err("ambiguous target");
645: exit(1);
646: }
647: targ = *argv;
648: if (targetshouldbedirectory)
649: verifydir(targ);
1.18 markus 650:
1.29 deraadt 651: (void) atomicio(write, remout, "", 1);
1.1 deraadt 652: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
653: targisdir = 1;
654: for (first = 1;; first = 0) {
655: cp = buf;
1.30 deraadt 656: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 657: return;
658: if (*cp++ == '\n')
659: SCREWUP("unexpected <newline>");
660: do {
1.30 deraadt 661: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 662: SCREWUP("lost connection");
663: *cp++ = ch;
664: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
665: *cp = 0;
666:
667: if (buf[0] == '\01' || buf[0] == '\02') {
668: if (iamremote == 0)
1.29 deraadt 669: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 670: buf + 1, strlen(buf + 1));
1.1 deraadt 671: if (buf[0] == '\02')
672: exit(1);
673: ++errs;
674: continue;
675: }
676: if (buf[0] == 'E') {
1.29 deraadt 677: (void) atomicio(write, remout, "", 1);
1.1 deraadt 678: return;
679: }
680: if (ch == '\n')
681: *--cp = 0;
682:
683: cp = buf;
684: if (*cp == 'T') {
685: setimes++;
686: cp++;
1.66 stevesk 687: mtime.tv_sec = strtol(cp, &cp, 10);
688: if (!cp || *cp++ != ' ')
1.1 deraadt 689: SCREWUP("mtime.sec not delimited");
1.66 stevesk 690: mtime.tv_usec = strtol(cp, &cp, 10);
691: if (!cp || *cp++ != ' ')
1.1 deraadt 692: SCREWUP("mtime.usec not delimited");
1.66 stevesk 693: atime.tv_sec = strtol(cp, &cp, 10);
694: if (!cp || *cp++ != ' ')
1.1 deraadt 695: SCREWUP("atime.sec not delimited");
1.66 stevesk 696: atime.tv_usec = strtol(cp, &cp, 10);
697: if (!cp || *cp++ != '\0')
1.1 deraadt 698: SCREWUP("atime.usec not delimited");
1.29 deraadt 699: (void) atomicio(write, remout, "", 1);
1.1 deraadt 700: continue;
701: }
702: if (*cp != 'C' && *cp != 'D') {
703: /*
704: * Check for the case "rcp remote:foo\* local:bar".
705: * In this case, the line "No match." can be returned
706: * by the shell before the rcp command on the remote is
707: * executed so the ^Aerror_message convention isn't
708: * followed.
709: */
710: if (first) {
711: run_err("%s", cp);
712: exit(1);
713: }
714: SCREWUP("expected control record");
715: }
716: mode = 0;
717: for (++cp; cp < buf + 5; cp++) {
718: if (*cp < '0' || *cp > '7')
719: SCREWUP("bad mode");
720: mode = (mode << 3) | (*cp - '0');
721: }
722: if (*cp++ != ' ')
723: SCREWUP("mode not delimited");
724:
1.63 stevesk 725: for (size = 0; isdigit(*cp);)
1.1 deraadt 726: size = size * 10 + (*cp++ - '0');
727: if (*cp++ != ' ')
728: SCREWUP("size not delimited");
729: if (targisdir) {
730: static char *namebuf;
731: static int cursize;
732: size_t need;
733:
734: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 735: if (need > cursize) {
1.58 danh 736: if (namebuf)
737: xfree(namebuf);
1.18 markus 738: namebuf = xmalloc(need);
1.55 deraadt 739: cursize = need;
740: }
741: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.35 deraadt 742: *targ ? "/" : "", cp);
1.1 deraadt 743: np = namebuf;
744: } else
745: np = targ;
1.12 aaron 746: curfile = cp;
1.1 deraadt 747: exists = stat(np, &stb) == 0;
748: if (buf[0] == 'D') {
749: int mod_flag = pflag;
750: if (exists) {
751: if (!S_ISDIR(stb.st_mode)) {
752: errno = ENOTDIR;
753: goto bad;
754: }
755: if (pflag)
1.18 markus 756: (void) chmod(np, mode);
1.1 deraadt 757: } else {
1.18 markus 758: /* Handle copying from a read-only
759: directory */
1.1 deraadt 760: mod_flag = 1;
761: if (mkdir(np, mode | S_IRWXU) < 0)
762: goto bad;
763: }
1.58 danh 764: vect[0] = xstrdup(np);
1.1 deraadt 765: sink(1, vect);
766: if (setimes) {
767: setimes = 0;
1.59 deraadt 768: if (utimes(vect[0], tv) < 0)
1.18 markus 769: run_err("%s: set times: %s",
1.59 deraadt 770: vect[0], strerror(errno));
1.1 deraadt 771: }
772: if (mod_flag)
1.59 deraadt 773: (void) chmod(vect[0], mode);
774: if (vect[0])
775: xfree(vect[0]);
1.1 deraadt 776: continue;
777: }
778: omode = mode;
779: mode |= S_IWRITE;
1.71 ! markus 780: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 781: bad: run_err("%s: %s", np, strerror(errno));
782: continue;
783: }
1.29 deraadt 784: (void) atomicio(write, remout, "", 1);
1.1 deraadt 785: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 786: (void) close(ofd);
1.1 deraadt 787: continue;
788: }
789: cp = bp->buf;
790: wrerr = NO;
1.7 deraadt 791:
792: if (showprogress) {
793: totalbytes = size;
794: progressmeter(-1);
795: }
1.12 aaron 796: statbytes = 0;
1.1 deraadt 797: for (count = i = 0; i < size; i += 4096) {
798: amt = 4096;
799: if (i + amt > size)
800: amt = size - i;
801: count += amt;
802: do {
1.43 markus 803: j = read(remin, cp, amt);
804: if (j == -1 && (errno == EINTR || errno == EAGAIN)) {
805: continue;
806: } else if (j <= 0) {
1.1 deraadt 807: run_err("%s", j ? strerror(errno) :
1.63 stevesk 808: "dropped connection");
1.1 deraadt 809: exit(1);
810: }
811: amt -= j;
812: cp += j;
1.18 markus 813: statbytes += j;
1.1 deraadt 814: } while (amt > 0);
815: if (count == bp->cnt) {
816: /* Keep reading so we stay sync'd up. */
817: if (wrerr == NO) {
1.30 deraadt 818: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 819: if (j != count) {
820: wrerr = YES;
1.18 markus 821: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 822: }
823: }
824: count = 0;
825: cp = bp->buf;
826: }
827: }
1.7 deraadt 828: if (showprogress)
829: progressmeter(1);
1.1 deraadt 830: if (count != 0 && wrerr == NO &&
1.30 deraadt 831: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 832: wrerr = YES;
1.18 markus 833: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 834: }
835: if (ftruncate(ofd, size)) {
836: run_err("%s: truncate: %s", np, strerror(errno));
837: wrerr = DISPLAYED;
838: }
839: if (pflag) {
840: if (exists || omode != mode)
841: if (fchmod(ofd, omode))
842: run_err("%s: set mode: %s",
1.63 stevesk 843: np, strerror(errno));
1.1 deraadt 844: } else {
845: if (!exists && omode != mode)
846: if (fchmod(ofd, omode & ~mask))
847: run_err("%s: set mode: %s",
1.63 stevesk 848: np, strerror(errno));
1.1 deraadt 849: }
1.33 provos 850: if (close(ofd) == -1) {
851: wrerr = YES;
852: wrerrno = errno;
853: }
1.18 markus 854: (void) response();
1.1 deraadt 855: if (setimes && wrerr == NO) {
856: setimes = 0;
1.40 markus 857: if (utimes(np, tv) < 0) {
1.1 deraadt 858: run_err("%s: set times: %s",
1.63 stevesk 859: np, strerror(errno));
1.1 deraadt 860: wrerr = DISPLAYED;
861: }
862: }
1.18 markus 863: switch (wrerr) {
1.1 deraadt 864: case YES:
865: run_err("%s: %s", np, strerror(wrerrno));
866: break;
867: case NO:
1.29 deraadt 868: (void) atomicio(write, remout, "", 1);
1.1 deraadt 869: break;
870: case DISPLAYED:
871: break;
872: }
873: }
874: screwup:
875: run_err("protocol error: %s", why);
876: exit(1);
877: }
878:
879: int
880: response()
881: {
882: char ch, *cp, resp, rbuf[2048];
883:
1.30 deraadt 884: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 885: lostconn(0);
886:
887: cp = rbuf;
1.18 markus 888: switch (resp) {
889: case 0: /* ok */
1.1 deraadt 890: return (0);
891: default:
892: *cp++ = resp;
893: /* FALLTHROUGH */
1.18 markus 894: case 1: /* error, followed by error msg */
895: case 2: /* fatal error, "" */
1.1 deraadt 896: do {
1.30 deraadt 897: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 898: lostconn(0);
899: *cp++ = ch;
900: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
901:
902: if (!iamremote)
1.29 deraadt 903: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 904: ++errs;
905: if (resp == 1)
906: return (-1);
907: exit(1);
908: }
909: /* NOTREACHED */
910: }
911:
912: void
913: usage()
914: {
1.34 deraadt 915: (void) fprintf(stderr, "usage: scp "
1.64 stevesk 916: "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2\n"
917: " or: scp [options] f1 ... fn directory\n");
1.1 deraadt 918: exit(1);
919: }
920:
921: void
1.18 markus 922: run_err(const char *fmt,...)
1.1 deraadt 923: {
924: static FILE *fp;
925: va_list ap;
926: va_start(ap, fmt);
927:
928: ++errs;
929: if (fp == NULL && !(fp = fdopen(remout, "w")))
930: return;
1.18 markus 931: (void) fprintf(fp, "%c", 0x01);
932: (void) fprintf(fp, "scp: ");
933: (void) vfprintf(fp, fmt, ap);
934: (void) fprintf(fp, "\n");
935: (void) fflush(fp);
936:
937: if (!iamremote) {
938: vfprintf(stderr, fmt, ap);
939: fprintf(stderr, "\n");
940: }
1.1 deraadt 941: va_end(ap);
942: }
943:
944: void
945: verifydir(cp)
946: char *cp;
947: {
948: struct stat stb;
949:
950: if (!stat(cp, &stb)) {
951: if (S_ISDIR(stb.st_mode))
952: return;
953: errno = ENOTDIR;
954: }
955: run_err("%s: %s", cp, strerror(errno));
956: exit(1);
957: }
958:
959: int
960: okname(cp0)
961: char *cp0;
962: {
963: int c;
964: char *cp;
965:
966: cp = cp0;
967: do {
968: c = *cp;
969: if (c & 0200)
970: goto bad;
1.46 markus 971: if (!isalpha(c) && !isdigit(c) &&
972: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 973: goto bad;
974: } while (*++cp);
975: return (1);
976:
1.25 markus 977: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 978: return (0);
979: }
980:
981: BUF *
982: allocbuf(bp, fd, blksize)
983: BUF *bp;
984: int fd, blksize;
985: {
986: size_t size;
987: struct stat stb;
988:
989: if (fstat(fd, &stb) < 0) {
990: run_err("fstat: %s", strerror(errno));
991: return (0);
992: }
1.18 markus 993: if (stb.st_blksize == 0)
994: size = blksize;
995: else
996: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 997: stb.st_blksize;
1.1 deraadt 998: if (bp->cnt >= size)
999: return (bp);
1.18 markus 1000: if (bp->buf == NULL)
1001: bp->buf = xmalloc(size);
1002: else
1003: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1004: bp->cnt = size;
1005: return (bp);
1006: }
1007:
1008: void
1009: lostconn(signo)
1010: int signo;
1011: {
1012: if (!iamremote)
1013: fprintf(stderr, "lost connection\n");
1014: exit(1);
1015: }
1.4 aaron 1016:
1.10 deraadt 1017:
1.8 deraadt 1018: void
1019: alarmtimer(int wait)
1.4 aaron 1020: {
1.18 markus 1021: struct itimerval itv;
1.4 aaron 1022:
1.18 markus 1023: itv.it_value.tv_sec = wait;
1024: itv.it_value.tv_usec = 0;
1025: itv.it_interval = itv.it_value;
1026: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1027: }
1028:
1.8 deraadt 1029: void
1.26 markus 1030: updateprogressmeter(int ignore)
1.4 aaron 1031: {
1.9 deraadt 1032: int save_errno = errno;
1033:
1.4 aaron 1034: progressmeter(0);
1.9 deraadt 1035: errno = save_errno;
1.4 aaron 1036: }
1037:
1.16 deraadt 1038: int
1.56 itojun 1039: foregroundproc(void)
1.16 deraadt 1040: {
1041: static pid_t pgrp = -1;
1042: int ctty_pgrp;
1043:
1044: if (pgrp == -1)
1045: pgrp = getpgrp();
1046:
1.18 markus 1047: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1048: ctty_pgrp == pgrp));
1.16 deraadt 1049: }
1050:
1.8 deraadt 1051: void
1052: progressmeter(int flag)
1.4 aaron 1053: {
1054: static const char prefixes[] = " KMGTP";
1055: static struct timeval lastupdate;
1.11 aaron 1056: static off_t lastsize;
1.4 aaron 1057: struct timeval now, td, wait;
1058: off_t cursize, abbrevsize;
1059: double elapsed;
1060: int ratio, barlength, i, remaining;
1061: char buf[256];
1062:
1063: if (flag == -1) {
1.18 markus 1064: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1065: lastupdate = start;
1.11 aaron 1066: lastsize = 0;
1.18 markus 1067: }
1.16 deraadt 1068: if (foregroundproc() == 0)
1069: return;
1070:
1.18 markus 1071: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1072: cursize = statbytes;
1.13 aaron 1073: if (totalbytes != 0) {
1.21 markus 1074: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1075: ratio = MAX(ratio, 0);
1076: ratio = MIN(ratio, 100);
1.18 markus 1077: } else
1.13 aaron 1078: ratio = 100;
1079:
1.18 markus 1080: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1081:
1.11 aaron 1082: barlength = getttywidth() - 51;
1.4 aaron 1083: if (barlength > 0) {
1084: i = barlength * ratio / 100;
1085: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1086: "|%.*s%*s|", i,
1087: "*****************************************************************************"
1088: "*****************************************************************************",
1089: barlength - i, "");
1.4 aaron 1090: }
1091: i = 0;
1092: abbrevsize = cursize;
1093: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1094: i++;
1095: abbrevsize >>= 10;
1096: }
1.54 itojun 1097: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1098: (unsigned long long) abbrevsize, prefixes[i],
1099: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1100:
1101: timersub(&now, &lastupdate, &wait);
1102: if (cursize > lastsize) {
1103: lastupdate = now;
1104: lastsize = cursize;
1105: if (wait.tv_sec >= STALLTIME) {
1106: start.tv_sec += wait.tv_sec;
1107: start.tv_usec += wait.tv_usec;
1108: }
1109: wait.tv_sec = 0;
1110: }
1111: timersub(&now, &start, &td);
1.6 aaron 1112: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1113:
1.44 deraadt 1114: if (flag != 1 &&
1115: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1116: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1117: " --:-- ETA");
1.4 aaron 1118: } else if (wait.tv_sec >= STALLTIME) {
1119: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1120: " - stalled -");
1.4 aaron 1121: } else {
1.28 deraadt 1122: if (flag != 1)
1.44 deraadt 1123: remaining = (int)(totalbytes / (statbytes / elapsed) -
1124: elapsed);
1.28 deraadt 1125: else
1126: remaining = elapsed;
1127:
1.14 aaron 1128: i = remaining / 3600;
1.4 aaron 1129: if (i)
1130: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1131: "%2d:", i);
1.4 aaron 1132: else
1133: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1134: " ");
1.4 aaron 1135: i = remaining % 3600;
1136: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1137: "%02d:%02d%s", i / 60, i % 60,
1138: (flag != 1) ? " ETA" : " ");
1.4 aaron 1139: }
1.10 deraadt 1140: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1141:
1142: if (flag == -1) {
1.26 markus 1143: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1144: alarmtimer(1);
1145: } else if (flag == 1) {
1.10 deraadt 1146: alarmtimer(0);
1.29 deraadt 1147: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1148: statbytes = 0;
1.4 aaron 1149: }
1150: }
1151:
1.8 deraadt 1152: int
1153: getttywidth(void)
1.4 aaron 1154: {
1155: struct winsize winsize;
1156:
1157: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1158: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1159: else
1.18 markus 1160: return (80);
1.4 aaron 1161: }
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