Annotation of src/usr.bin/ssh/scp.c, Revision 1.68.2.1
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"
1.68.2.1! jason 78: RCSID("$OpenBSD: scp.c,v 1.84 2001/09/19 19:24:19 stevesk 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"
1.68.2.1! jason 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
1.68.2.1! jason 88: /* alarm() interval for updating progress meter */
! 89: #define PROGRESSTIME 1
1.4 aaron 90:
1.11 aaron 91: /* Visual statistics about files as they are transferred. */
92: void progressmeter(int);
93:
94: /* Returns width of the terminal (for progress meter calculations). */
95: int getttywidth(void);
1.35 deraadt 96: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
1.11 aaron 97:
1.68.2.1! jason 98: /* Struct for addargs */
! 99: arglist args;
1.41 markus 100:
1.11 aaron 101: /* Time a transfer started. */
1.4 aaron 102: static struct timeval start;
1.11 aaron 103:
104: /* Number of bytes of current file transferred so far. */
1.68 markus 105: volatile off_t statbytes;
1.11 aaron 106:
107: /* Total size of current file. */
1.15 markus 108: off_t totalbytes = 0;
1.11 aaron 109:
110: /* Name of current file being transferred. */
111: char *curfile;
1.4 aaron 112:
1.1 deraadt 113: /* This is set to non-zero to enable verbose mode. */
1.17 markus 114: int verbose_mode = 0;
1.1 deraadt 115:
1.6 aaron 116: /* This is set to zero if the progressmeter is not desired. */
117: int showprogress = 1;
118:
1.34 deraadt 119: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 120: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 121:
1.20 markus 122: /*
123: * This function executes the given command as the specified user on the
124: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
125: * assigns the input and output file descriptors on success.
126: */
1.1 deraadt 127:
1.27 markus 128: int
1.35 deraadt 129: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
1.1 deraadt 130: {
1.18 markus 131: int pin[2], pout[2], reserved[2];
132:
133: if (verbose_mode)
1.68.2.1! jason 134: fprintf(stderr,
! 135: "Executing: program %s host %s, user %s, command %s\n",
! 136: ssh_program, host,
! 137: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 138:
1.20 markus 139: /*
140: * Reserve two descriptors so that the real pipes won't get
141: * descriptors 0 and 1 because that will screw up dup2 below.
142: */
1.18 markus 143: pipe(reserved);
144:
145: /* Create a socket pair for communicating with ssh. */
146: if (pipe(pin) < 0)
147: fatal("pipe: %s", strerror(errno));
148: if (pipe(pout) < 0)
149: fatal("pipe: %s", strerror(errno));
150:
151: /* Free the reserved descriptors. */
152: close(reserved[0]);
153: close(reserved[1]);
154:
155: /* For a child to execute the command on the remote host using ssh. */
1.41 markus 156: if (fork() == 0) {
1.18 markus 157: /* Child. */
158: close(pin[1]);
159: close(pout[0]);
160: dup2(pin[0], 0);
161: dup2(pout[1], 1);
162: close(pin[0]);
163: close(pout[1]);
164:
1.41 markus 165: args.list[0] = ssh_program;
166: if (remuser != NULL)
1.68.2.1! jason 167: addargs(&args, "-l%s", remuser);
! 168: addargs(&args, "%s", host);
! 169: addargs(&args, "%s", cmd);
1.18 markus 170:
1.41 markus 171: execvp(ssh_program, args.list);
1.34 deraadt 172: perror(ssh_program);
1.18 markus 173: exit(1);
174: }
175: /* Parent. Close the other side, and return the local side. */
176: close(pin[0]);
177: *fdout = pin[1];
178: close(pout[1]);
179: *fdin = pout[0];
180: return 0;
1.1 deraadt 181: }
182:
183: typedef struct {
184: int cnt;
185: char *buf;
186: } BUF;
187:
1.18 markus 188: BUF *allocbuf(BUF *, int, int);
189: void lostconn(int);
190: void nospace(void);
191: int okname(char *);
192: void run_err(const char *,...);
193: void verifydir(char *);
1.1 deraadt 194:
195: struct passwd *pwd;
1.18 markus 196: uid_t userid;
1.1 deraadt 197: int errs, remin, remout;
198: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
199:
200: #define CMDNEEDS 64
201: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
202:
1.18 markus 203: int response(void);
204: void rsource(char *, struct stat *);
205: void sink(int, char *[]);
206: void source(int, char *[]);
207: void tolocal(int, char *[]);
208: void toremote(char *, int, char *[]);
209: void usage(void);
1.1 deraadt 210:
211: int
212: main(argc, argv)
213: int argc;
214: char *argv[];
215: {
216: int ch, fflag, tflag;
217: char *targ;
218: extern char *optarg;
219: extern int optind;
220:
1.41 markus 221: args.list = NULL;
1.68.2.1! jason 222: addargs(&args, "ssh"); /* overwritten with ssh_program */
! 223: addargs(&args, "-x");
! 224: addargs(&args, "-oForwardAgent no");
! 225: addargs(&args, "-oFallBackToRsh no");
! 226: addargs(&args, "-oClearAllForwardings yes");
1.41 markus 227:
1.1 deraadt 228: fflag = tflag = 0;
1.68.2.1! jason 229: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:F:")) != -1)
1.18 markus 230: switch (ch) {
231: /* User-visible flags. */
1.23 markus 232: case '4':
1.41 markus 233: case '6':
234: case 'C':
1.68.2.1! jason 235: addargs(&args, "-%c", ch);
1.41 markus 236: break;
237: case 'o':
238: case 'c':
239: case 'i':
1.68.2.1! jason 240: case 'F':
! 241: addargs(&args, "-%c%s", ch, optarg);
1.23 markus 242: break;
1.41 markus 243: case 'P':
1.68.2.1! jason 244: addargs(&args, "-p%s", optarg);
1.41 markus 245: break;
246: case 'B':
1.68.2.1! jason 247: addargs(&args, "-oBatchmode yes");
1.23 markus 248: break;
1.1 deraadt 249: case 'p':
250: pflag = 1;
251: break;
252: case 'r':
253: iamrecursive = 1;
254: break;
1.34 deraadt 255: case 'S':
1.41 markus 256: ssh_program = xstrdup(optarg);
257: break;
258: case 'v':
1.68.2.1! jason 259: addargs(&args, "-v");
1.41 markus 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: default:
279: usage();
280: }
281: argc -= optind;
282: argv += optind;
283:
284: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 285: fatal("unknown user %d", (int) userid);
1.1 deraadt 286:
1.18 markus 287: if (!isatty(STDERR_FILENO))
1.7 deraadt 288: showprogress = 0;
289:
1.1 deraadt 290: remin = STDIN_FILENO;
291: remout = STDOUT_FILENO;
292:
1.52 stevesk 293: if (fflag) {
1.18 markus 294: /* Follow "protocol", send data. */
295: (void) response();
1.1 deraadt 296: source(argc, argv);
297: exit(errs != 0);
298: }
1.18 markus 299: if (tflag) {
300: /* Receive data. */
1.1 deraadt 301: sink(argc, argv);
302: exit(errs != 0);
303: }
304: if (argc < 2)
305: usage();
306: if (argc > 2)
307: targetshouldbedirectory = 1;
308:
309: remin = remout = -1;
310: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 311: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
312: 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:
328: void
329: toremote(targ, argc, argv)
330: char *targ, *argv[];
331: int argc;
332: {
333: int i, len;
334: char *bp, *host, *src, *suser, *thost, *tuser;
335:
336: *targ++ = 0;
337: if (*targ == 0)
338: targ = ".";
339:
340: if ((thost = strchr(argv[argc - 1], '@'))) {
341: /* user@host */
342: *thost++ = 0;
343: tuser = argv[argc - 1];
344: if (*tuser == '\0')
345: tuser = NULL;
346: else if (!okname(tuser))
347: exit(1);
348: } else {
349: thost = argv[argc - 1];
350: tuser = NULL;
351: }
352:
353: for (i = 0; i < argc - 1; i++) {
354: src = colon(argv[i]);
1.18 markus 355: if (src) { /* remote to remote */
1.68.2.1! jason 356: static char *ssh_options =
! 357: "-x -o'FallBackToRsh no' "
! 358: "-o'ClearAllForwardings yes'";
1.1 deraadt 359: *src++ = 0;
360: if (*src == 0)
361: src = ".";
362: host = strchr(argv[i], '@');
1.34 deraadt 363: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 364: strlen(src) + (tuser ? strlen(tuser) : 0) +
1.68.2.1! jason 365: strlen(thost) + strlen(targ) +
! 366: strlen(ssh_options) + CMDNEEDS + 20;
1.18 markus 367: bp = xmalloc(len);
1.1 deraadt 368: if (host) {
369: *host++ = 0;
1.23 markus 370: host = cleanhostname(host);
1.1 deraadt 371: suser = argv[i];
372: if (*suser == '\0')
373: suser = pwd->pw_name;
374: else if (!okname(suser))
375: continue;
1.55 deraadt 376: snprintf(bp, len,
1.68.2.1! jason 377: "%s%s %s -n "
1.55 deraadt 378: "-l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 379: ssh_program, verbose_mode ? " -v" : "",
1.68.2.1! jason 380: ssh_options, suser, host, cmd, src,
1.44 deraadt 381: tuser ? tuser : "", tuser ? "@" : "",
382: thost, targ);
1.23 markus 383: } else {
384: host = cleanhostname(argv[i]);
1.55 deraadt 385: snprintf(bp, len,
1.68.2.1! jason 386: "exec %s%s %s -n %s "
1.55 deraadt 387: "%s %s '%s%s%s:%s'",
1.44 deraadt 388: ssh_program, verbose_mode ? " -v" : "",
1.68.2.1! jason 389: ssh_options, host, cmd, src,
1.44 deraadt 390: tuser ? tuser : "", tuser ? "@" : "",
391: thost, targ);
1.23 markus 392: }
1.18 markus 393: if (verbose_mode)
394: fprintf(stderr, "Executing: %s\n", bp);
395: (void) system(bp);
396: (void) xfree(bp);
397: } else { /* local to remote */
1.1 deraadt 398: if (remin == -1) {
399: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 400: bp = xmalloc(len);
1.55 deraadt 401: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 402: host = cleanhostname(thost);
1.35 deraadt 403: if (do_cmd(host, tuser, bp, &remin,
404: &remout, argc) < 0)
1.18 markus 405: exit(1);
1.1 deraadt 406: if (response() < 0)
407: exit(1);
1.18 markus 408: (void) xfree(bp);
1.1 deraadt 409: }
1.18 markus 410: source(1, argv + i);
1.1 deraadt 411: }
412: }
413: }
414:
415: void
416: tolocal(argc, argv)
417: int argc;
418: char *argv[];
419: {
420: int i, len;
421: char *bp, *host, *src, *suser;
422:
423: for (i = 0; i < argc - 1; i++) {
1.18 markus 424: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 425: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 426: strlen(argv[argc - 1]) + 20;
1.1 deraadt 427: bp = xmalloc(len);
1.55 deraadt 428: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 429: iamrecursive ? " -r" : "", pflag ? " -p" : "",
430: argv[i], argv[argc - 1]);
1.18 markus 431: if (verbose_mode)
432: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 433: if (system(bp))
434: ++errs;
1.18 markus 435: (void) xfree(bp);
1.1 deraadt 436: continue;
437: }
438: *src++ = 0;
439: if (*src == 0)
440: src = ".";
441: if ((host = strchr(argv[i], '@')) == NULL) {
442: host = argv[i];
443: suser = NULL;
444: } else {
445: *host++ = 0;
446: suser = argv[i];
447: if (*suser == '\0')
448: suser = pwd->pw_name;
449: else if (!okname(suser))
450: continue;
451: }
1.23 markus 452: host = cleanhostname(host);
1.1 deraadt 453: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 454: bp = xmalloc(len);
1.55 deraadt 455: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 456: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 457: (void) xfree(bp);
458: ++errs;
459: continue;
1.1 deraadt 460: }
1.18 markus 461: xfree(bp);
1.1 deraadt 462: sink(1, argv + argc - 1);
1.18 markus 463: (void) close(remin);
1.1 deraadt 464: remin = remout = -1;
465: }
466: }
467:
468: void
469: source(argc, argv)
470: int argc;
471: char *argv[];
472: {
473: struct stat stb;
474: static BUF buffer;
475: BUF *bp;
1.68 markus 476: off_t i, amt, result;
477: int fd, haderr, indx;
1.1 deraadt 478: char *last, *name, buf[2048];
1.65 deraadt 479: int len;
1.1 deraadt 480:
481: for (indx = 0; indx < argc; ++indx) {
1.18 markus 482: name = argv[indx];
1.11 aaron 483: statbytes = 0;
1.65 deraadt 484: len = strlen(name);
485: while (len > 1 && name[len-1] == '/')
486: name[--len] = '\0';
1.1 deraadt 487: if ((fd = open(name, O_RDONLY, 0)) < 0)
488: goto syserr;
489: if (fstat(fd, &stb) < 0) {
490: syserr: run_err("%s: %s", name, strerror(errno));
491: goto next;
492: }
493: switch (stb.st_mode & S_IFMT) {
494: case S_IFREG:
495: break;
496: case S_IFDIR:
497: if (iamrecursive) {
498: rsource(name, &stb);
499: goto next;
500: }
501: /* FALLTHROUGH */
502: default:
503: run_err("%s: not a regular file", name);
504: goto next;
505: }
506: if ((last = strrchr(name, '/')) == NULL)
507: last = name;
508: else
509: ++last;
1.11 aaron 510: curfile = last;
1.1 deraadt 511: if (pflag) {
512: /*
513: * Make it compatible with possible future
514: * versions expecting microseconds.
515: */
1.55 deraadt 516: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 517: (u_long) stb.st_mtime,
518: (u_long) stb.st_atime);
1.29 deraadt 519: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 520: if (response() < 0)
521: goto next;
522: }
523: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 524: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 525: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 526: (long long)stb.st_size, last);
1.18 markus 527: if (verbose_mode) {
528: fprintf(stderr, "Sending file modes: %s", buf);
529: fflush(stderr);
530: }
1.29 deraadt 531: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 532: if (response() < 0)
533: goto next;
534: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 535: next: (void) close(fd);
1.1 deraadt 536: continue;
537: }
1.12 aaron 538: if (showprogress) {
539: totalbytes = stb.st_size;
1.6 aaron 540: progressmeter(-1);
1.12 aaron 541: }
1.1 deraadt 542: /* Keep writing after an error so that we stay sync'd up. */
543: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
544: amt = bp->cnt;
545: if (i + amt > stb.st_size)
546: amt = stb.st_size - i;
547: if (!haderr) {
1.30 deraadt 548: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 549: if (result != amt)
550: haderr = result >= 0 ? EIO : errno;
551: }
552: if (haderr)
1.29 deraadt 553: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 554: else {
1.29 deraadt 555: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 556: if (result != amt)
557: haderr = result >= 0 ? EIO : errno;
1.4 aaron 558: statbytes += result;
1.1 deraadt 559: }
560: }
1.18 markus 561: if (showprogress)
1.6 aaron 562: progressmeter(1);
1.4 aaron 563:
1.1 deraadt 564: if (close(fd) < 0 && !haderr)
565: haderr = errno;
566: if (!haderr)
1.29 deraadt 567: (void) atomicio(write, remout, "", 1);
1.1 deraadt 568: else
569: run_err("%s: %s", name, strerror(haderr));
1.18 markus 570: (void) response();
1.1 deraadt 571: }
572: }
573:
574: void
575: rsource(name, statp)
576: char *name;
577: struct stat *statp;
578: {
579: DIR *dirp;
580: struct dirent *dp;
581: char *last, *vect[1], path[1100];
582:
583: if (!(dirp = opendir(name))) {
584: run_err("%s: %s", name, strerror(errno));
585: return;
586: }
587: last = strrchr(name, '/');
588: if (last == 0)
589: last = name;
590: else
591: last++;
592: if (pflag) {
1.55 deraadt 593: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 594: (u_long) statp->st_mtime,
595: (u_long) statp->st_atime);
1.29 deraadt 596: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 597: if (response() < 0) {
598: closedir(dirp);
599: return;
600: }
601: }
1.55 deraadt 602: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 603: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 604: if (verbose_mode)
605: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 606: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 607: if (response() < 0) {
608: closedir(dirp);
609: return;
610: }
1.63 stevesk 611: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 612: if (dp->d_ino == 0)
613: continue;
614: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
615: continue;
616: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
617: run_err("%s/%s: name too long", name, dp->d_name);
618: continue;
619: }
1.55 deraadt 620: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 621: vect[0] = path;
622: source(1, vect);
623: }
1.18 markus 624: (void) closedir(dirp);
1.29 deraadt 625: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 626: (void) response();
1.1 deraadt 627: }
628:
629: void
630: sink(argc, argv)
631: int argc;
632: char *argv[];
633: {
634: static BUF buffer;
635: struct stat stb;
1.18 markus 636: enum {
637: YES, NO, DISPLAYED
638: } wrerr;
1.1 deraadt 639: BUF *bp;
640: off_t i, j;
641: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 642: off_t size;
643: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 644: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 645: struct timeval tv[2];
1.1 deraadt 646:
1.66 stevesk 647: #define atime tv[0]
648: #define mtime tv[1]
1.68.2.1! jason 649: #define SCREWUP(str) do { why = str; goto screwup; } while (0)
1.1 deraadt 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: cp = buf;
696: if (*cp == 'T') {
697: setimes++;
698: cp++;
1.66 stevesk 699: mtime.tv_sec = strtol(cp, &cp, 10);
700: if (!cp || *cp++ != ' ')
1.1 deraadt 701: SCREWUP("mtime.sec not delimited");
1.66 stevesk 702: mtime.tv_usec = strtol(cp, &cp, 10);
703: if (!cp || *cp++ != ' ')
1.1 deraadt 704: SCREWUP("mtime.usec not delimited");
1.66 stevesk 705: atime.tv_sec = strtol(cp, &cp, 10);
706: if (!cp || *cp++ != ' ')
1.1 deraadt 707: SCREWUP("atime.sec not delimited");
1.66 stevesk 708: atime.tv_usec = strtol(cp, &cp, 10);
709: if (!cp || *cp++ != '\0')
1.1 deraadt 710: SCREWUP("atime.usec not delimited");
1.29 deraadt 711: (void) atomicio(write, remout, "", 1);
1.1 deraadt 712: continue;
713: }
714: if (*cp != 'C' && *cp != 'D') {
715: /*
716: * Check for the case "rcp remote:foo\* local:bar".
717: * In this case, the line "No match." can be returned
718: * by the shell before the rcp command on the remote is
719: * executed so the ^Aerror_message convention isn't
720: * followed.
721: */
722: if (first) {
723: run_err("%s", cp);
724: exit(1);
725: }
726: SCREWUP("expected control record");
727: }
728: mode = 0;
729: for (++cp; cp < buf + 5; cp++) {
730: if (*cp < '0' || *cp > '7')
731: SCREWUP("bad mode");
732: mode = (mode << 3) | (*cp - '0');
733: }
734: if (*cp++ != ' ')
735: SCREWUP("mode not delimited");
736:
1.63 stevesk 737: for (size = 0; isdigit(*cp);)
1.1 deraadt 738: size = size * 10 + (*cp++ - '0');
739: if (*cp++ != ' ')
740: SCREWUP("size not delimited");
741: if (targisdir) {
742: static char *namebuf;
743: static int cursize;
744: size_t need;
745:
746: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 747: if (need > cursize) {
1.58 danh 748: if (namebuf)
749: xfree(namebuf);
1.18 markus 750: namebuf = xmalloc(need);
1.55 deraadt 751: cursize = need;
752: }
753: (void) snprintf(namebuf, need, "%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: }
1.58 danh 776: vect[0] = xstrdup(np);
1.1 deraadt 777: sink(1, vect);
778: if (setimes) {
779: setimes = 0;
1.59 deraadt 780: if (utimes(vect[0], tv) < 0)
1.18 markus 781: run_err("%s: set times: %s",
1.59 deraadt 782: vect[0], strerror(errno));
1.1 deraadt 783: }
784: if (mod_flag)
1.59 deraadt 785: (void) chmod(vect[0], mode);
786: if (vect[0])
787: xfree(vect[0]);
1.1 deraadt 788: continue;
789: }
790: omode = mode;
791: mode |= S_IWRITE;
1.68.2.1! jason 792: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 793: bad: run_err("%s: %s", np, strerror(errno));
794: continue;
795: }
1.29 deraadt 796: (void) atomicio(write, remout, "", 1);
1.1 deraadt 797: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 798: (void) close(ofd);
1.1 deraadt 799: continue;
800: }
801: cp = bp->buf;
802: wrerr = NO;
1.7 deraadt 803:
804: if (showprogress) {
805: totalbytes = size;
806: progressmeter(-1);
807: }
1.12 aaron 808: statbytes = 0;
1.1 deraadt 809: for (count = i = 0; i < size; i += 4096) {
810: amt = 4096;
811: if (i + amt > size)
812: amt = size - i;
813: count += amt;
814: do {
1.43 markus 815: j = read(remin, cp, amt);
1.68.2.1! jason 816: if (j == -1 && (errno == EINTR ||
! 817: errno == EAGAIN)) {
1.43 markus 818: continue;
819: } else if (j <= 0) {
1.1 deraadt 820: run_err("%s", j ? strerror(errno) :
1.63 stevesk 821: "dropped connection");
1.1 deraadt 822: exit(1);
823: }
824: amt -= j;
825: cp += j;
1.18 markus 826: statbytes += j;
1.1 deraadt 827: } while (amt > 0);
828: if (count == bp->cnt) {
829: /* Keep reading so we stay sync'd up. */
830: if (wrerr == NO) {
1.30 deraadt 831: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 832: if (j != count) {
833: wrerr = YES;
1.18 markus 834: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 835: }
836: }
837: count = 0;
838: cp = bp->buf;
839: }
840: }
1.7 deraadt 841: if (showprogress)
842: progressmeter(1);
1.1 deraadt 843: if (count != 0 && wrerr == NO &&
1.30 deraadt 844: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 845: wrerr = YES;
1.18 markus 846: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 847: }
848: if (ftruncate(ofd, size)) {
849: run_err("%s: truncate: %s", np, strerror(errno));
850: wrerr = DISPLAYED;
851: }
852: if (pflag) {
853: if (exists || omode != mode)
854: if (fchmod(ofd, omode))
855: run_err("%s: set mode: %s",
1.63 stevesk 856: np, strerror(errno));
1.1 deraadt 857: } else {
858: if (!exists && omode != mode)
859: if (fchmod(ofd, omode & ~mask))
860: run_err("%s: set mode: %s",
1.63 stevesk 861: np, strerror(errno));
1.1 deraadt 862: }
1.33 provos 863: if (close(ofd) == -1) {
864: wrerr = YES;
865: wrerrno = errno;
866: }
1.18 markus 867: (void) response();
1.1 deraadt 868: if (setimes && wrerr == NO) {
869: setimes = 0;
1.40 markus 870: if (utimes(np, tv) < 0) {
1.1 deraadt 871: run_err("%s: set times: %s",
1.63 stevesk 872: np, strerror(errno));
1.1 deraadt 873: wrerr = DISPLAYED;
874: }
875: }
1.18 markus 876: switch (wrerr) {
1.1 deraadt 877: case YES:
878: run_err("%s: %s", np, strerror(wrerrno));
879: break;
880: case NO:
1.29 deraadt 881: (void) atomicio(write, remout, "", 1);
1.1 deraadt 882: break;
883: case DISPLAYED:
884: break;
885: }
886: }
887: screwup:
888: run_err("protocol error: %s", why);
889: exit(1);
890: }
891:
892: int
893: response()
894: {
895: char ch, *cp, resp, rbuf[2048];
896:
1.30 deraadt 897: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 898: lostconn(0);
899:
900: cp = rbuf;
1.18 markus 901: switch (resp) {
902: case 0: /* ok */
1.1 deraadt 903: return (0);
904: default:
905: *cp++ = resp;
906: /* FALLTHROUGH */
1.18 markus 907: case 1: /* error, followed by error msg */
908: case 2: /* fatal error, "" */
1.1 deraadt 909: do {
1.30 deraadt 910: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 911: lostconn(0);
912: *cp++ = ch;
913: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
914:
915: if (!iamremote)
1.29 deraadt 916: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 917: ++errs;
918: if (resp == 1)
919: return (-1);
920: exit(1);
921: }
922: /* NOTREACHED */
923: }
924:
925: void
926: usage()
927: {
1.68.2.1! jason 928: (void) fprintf(stderr,
! 929: "usage: scp [-pqrvBC46] [-F config] [-S ssh] [-P port] [-c cipher] [-i identity]\n"
! 930: " [-o option] f1 f2\n"
1.64 stevesk 931: " or: scp [options] f1 ... fn directory\n");
1.1 deraadt 932: exit(1);
933: }
934:
935: void
1.18 markus 936: run_err(const char *fmt,...)
1.1 deraadt 937: {
938: static FILE *fp;
939: va_list ap;
940:
941: ++errs;
942: if (fp == NULL && !(fp = fdopen(remout, "w")))
943: return;
1.18 markus 944: (void) fprintf(fp, "%c", 0x01);
945: (void) fprintf(fp, "scp: ");
1.68.2.1! jason 946: va_start(ap, fmt);
1.18 markus 947: (void) vfprintf(fp, fmt, ap);
1.68.2.1! jason 948: va_end(ap);
1.18 markus 949: (void) fprintf(fp, "\n");
950: (void) fflush(fp);
951:
952: if (!iamremote) {
1.68.2.1! jason 953: va_start(ap, fmt);
1.18 markus 954: vfprintf(stderr, fmt, ap);
1.68.2.1! jason 955: va_end(ap);
1.18 markus 956: fprintf(stderr, "\n");
957: }
1.1 deraadt 958: }
959:
960: void
961: verifydir(cp)
962: char *cp;
963: {
964: struct stat stb;
965:
966: if (!stat(cp, &stb)) {
967: if (S_ISDIR(stb.st_mode))
968: return;
969: errno = ENOTDIR;
970: }
971: run_err("%s: %s", cp, strerror(errno));
972: exit(1);
973: }
974:
975: int
976: okname(cp0)
977: char *cp0;
978: {
979: int c;
980: char *cp;
981:
982: cp = cp0;
983: do {
1.68.2.1! jason 984: c = (int)*cp;
1.1 deraadt 985: if (c & 0200)
986: goto bad;
1.46 markus 987: if (!isalpha(c) && !isdigit(c) &&
988: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 989: goto bad;
990: } while (*++cp);
991: return (1);
992:
1.25 markus 993: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 994: return (0);
995: }
996:
997: BUF *
998: allocbuf(bp, fd, blksize)
999: BUF *bp;
1000: int fd, blksize;
1001: {
1002: size_t size;
1003: struct stat stb;
1004:
1005: if (fstat(fd, &stb) < 0) {
1006: run_err("fstat: %s", strerror(errno));
1007: return (0);
1008: }
1.18 markus 1009: if (stb.st_blksize == 0)
1010: size = blksize;
1011: else
1012: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1013: stb.st_blksize;
1.1 deraadt 1014: if (bp->cnt >= size)
1015: return (bp);
1.18 markus 1016: if (bp->buf == NULL)
1017: bp->buf = xmalloc(size);
1018: else
1019: bp->buf = xrealloc(bp->buf, size);
1.68.2.1! jason 1020: memset(bp->buf, 0, size);
1.1 deraadt 1021: bp->cnt = size;
1022: return (bp);
1023: }
1024:
1025: void
1026: lostconn(signo)
1027: int signo;
1028: {
1029: if (!iamremote)
1.68.2.1! jason 1030: write(STDERR_FILENO, "lost connection\n", 16);
! 1031: if (signo)
! 1032: _exit(1);
! 1033: else
! 1034: exit(1);
1.4 aaron 1035: }
1036:
1.68.2.1! jason 1037: static void
1.26 markus 1038: updateprogressmeter(int ignore)
1.4 aaron 1039: {
1.9 deraadt 1040: int save_errno = errno;
1041:
1.4 aaron 1042: progressmeter(0);
1.68.2.1! jason 1043: signal(SIGALRM, updateprogressmeter);
! 1044: alarm(PROGRESSTIME);
1.9 deraadt 1045: errno = save_errno;
1.4 aaron 1046: }
1047:
1.68.2.1! jason 1048: static int
1.56 itojun 1049: foregroundproc(void)
1.16 deraadt 1050: {
1051: static pid_t pgrp = -1;
1052: int ctty_pgrp;
1053:
1054: if (pgrp == -1)
1055: pgrp = getpgrp();
1056:
1.18 markus 1057: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1058: ctty_pgrp == pgrp));
1.16 deraadt 1059: }
1060:
1.8 deraadt 1061: void
1062: progressmeter(int flag)
1.4 aaron 1063: {
1064: static const char prefixes[] = " KMGTP";
1065: static struct timeval lastupdate;
1.11 aaron 1066: static off_t lastsize;
1.4 aaron 1067: struct timeval now, td, wait;
1068: off_t cursize, abbrevsize;
1069: double elapsed;
1070: int ratio, barlength, i, remaining;
1071: char buf[256];
1072:
1073: if (flag == -1) {
1.18 markus 1074: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1075: lastupdate = start;
1.11 aaron 1076: lastsize = 0;
1.18 markus 1077: }
1.16 deraadt 1078: if (foregroundproc() == 0)
1079: return;
1080:
1.18 markus 1081: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1082: cursize = statbytes;
1.13 aaron 1083: if (totalbytes != 0) {
1.21 markus 1084: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1085: ratio = MAX(ratio, 0);
1086: ratio = MIN(ratio, 100);
1.18 markus 1087: } else
1.13 aaron 1088: ratio = 100;
1089:
1.18 markus 1090: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1091:
1.11 aaron 1092: barlength = getttywidth() - 51;
1.4 aaron 1093: if (barlength > 0) {
1094: i = barlength * ratio / 100;
1095: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1096: "|%.*s%*s|", i,
1.68.2.1! jason 1097: "***************************************"
! 1098: "***************************************"
! 1099: "***************************************"
! 1100: "***************************************",
1.35 deraadt 1101: barlength - i, "");
1.4 aaron 1102: }
1103: i = 0;
1104: abbrevsize = cursize;
1105: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1106: i++;
1107: abbrevsize >>= 10;
1108: }
1.54 itojun 1109: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1110: (unsigned long long) abbrevsize, prefixes[i],
1111: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1112:
1113: timersub(&now, &lastupdate, &wait);
1114: if (cursize > lastsize) {
1115: lastupdate = now;
1116: lastsize = cursize;
1117: if (wait.tv_sec >= STALLTIME) {
1118: start.tv_sec += wait.tv_sec;
1119: start.tv_usec += wait.tv_usec;
1120: }
1121: wait.tv_sec = 0;
1122: }
1123: timersub(&now, &start, &td);
1.6 aaron 1124: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1125:
1.44 deraadt 1126: if (flag != 1 &&
1127: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1128: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1129: " --:-- ETA");
1.4 aaron 1130: } else if (wait.tv_sec >= STALLTIME) {
1131: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1132: " - stalled -");
1.4 aaron 1133: } else {
1.28 deraadt 1134: if (flag != 1)
1.44 deraadt 1135: remaining = (int)(totalbytes / (statbytes / elapsed) -
1136: elapsed);
1.28 deraadt 1137: else
1138: remaining = elapsed;
1139:
1.14 aaron 1140: i = remaining / 3600;
1.4 aaron 1141: if (i)
1142: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1143: "%2d:", i);
1.4 aaron 1144: else
1145: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1146: " ");
1.4 aaron 1147: i = remaining % 3600;
1148: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1149: "%02d:%02d%s", i / 60, i % 60,
1150: (flag != 1) ? " ETA" : " ");
1.4 aaron 1151: }
1.10 deraadt 1152: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1153:
1154: if (flag == -1) {
1.26 markus 1155: signal(SIGALRM, updateprogressmeter);
1.68.2.1! jason 1156: alarm(PROGRESSTIME);
1.4 aaron 1157: } else if (flag == 1) {
1.68.2.1! jason 1158: alarm(0);
1.29 deraadt 1159: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1160: statbytes = 0;
1.4 aaron 1161: }
1162: }
1163:
1.8 deraadt 1164: int
1165: getttywidth(void)
1.4 aaron 1166: {
1167: struct winsize winsize;
1168:
1169: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1170: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1171: else
1.18 markus 1172: return (80);
1.4 aaron 1173: }