Annotation of src/usr.bin/ssh/scp.c, Revision 1.90
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"
1.90 ! deraadt 78: RCSID("$OpenBSD: scp.c,v 1.89 2002/06/08 12:36:53 markus 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
1.79 stevesk 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:
1.70 mouring 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)
1.78 deraadt 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)
1.70 mouring 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;
1.70 mouring 222: addargs(&args, "ssh"); /* overwritten with ssh_program */
223: addargs(&args, "-x");
1.82 stevesk 224: addargs(&args, "-oForwardAgent no");
1.84 stevesk 225: addargs(&args, "-oClearAllForwardings yes");
1.41 markus 226:
1.1 deraadt 227: fflag = tflag = 0;
1.83 stevesk 228: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:F:")) != -1)
1.18 markus 229: switch (ch) {
230: /* User-visible flags. */
1.23 markus 231: case '4':
1.41 markus 232: case '6':
233: case 'C':
1.70 mouring 234: addargs(&args, "-%c", ch);
1.41 markus 235: break;
236: case 'o':
237: case 'c':
238: case 'i':
1.83 stevesk 239: case 'F':
1.70 mouring 240: addargs(&args, "-%c%s", ch, optarg);
1.23 markus 241: break;
1.41 markus 242: case 'P':
1.70 mouring 243: addargs(&args, "-p%s", optarg);
1.41 markus 244: break;
245: case 'B':
1.70 mouring 246: addargs(&args, "-oBatchmode yes");
1.23 markus 247: break;
1.1 deraadt 248: case 'p':
249: pflag = 1;
250: break;
251: case 'r':
252: iamrecursive = 1;
253: break;
1.34 deraadt 254: case 'S':
1.41 markus 255: ssh_program = xstrdup(optarg);
256: break;
257: case 'v':
1.72 markus 258: addargs(&args, "-v");
1.41 markus 259: verbose_mode = 1;
260: break;
261: case 'q':
262: showprogress = 0;
1.34 deraadt 263: break;
264:
1.18 markus 265: /* Server options. */
1.1 deraadt 266: case 'd':
267: targetshouldbedirectory = 1;
268: break;
1.18 markus 269: case 'f': /* "from" */
1.1 deraadt 270: iamremote = 1;
271: fflag = 1;
272: break;
1.18 markus 273: case 't': /* "to" */
1.1 deraadt 274: iamremote = 1;
275: tflag = 1;
276: break;
277: default:
278: usage();
279: }
280: argc -= optind;
281: argv += optind;
282:
283: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 284: fatal("unknown user %d", (int) userid);
1.1 deraadt 285:
1.18 markus 286: if (!isatty(STDERR_FILENO))
1.7 deraadt 287: showprogress = 0;
288:
1.1 deraadt 289: remin = STDIN_FILENO;
290: remout = STDOUT_FILENO;
291:
1.52 stevesk 292: if (fflag) {
1.18 markus 293: /* Follow "protocol", send data. */
294: (void) response();
1.1 deraadt 295: source(argc, argv);
296: exit(errs != 0);
297: }
1.18 markus 298: if (tflag) {
299: /* Receive data. */
1.1 deraadt 300: sink(argc, argv);
301: exit(errs != 0);
302: }
303: if (argc < 2)
304: usage();
305: if (argc > 2)
306: targetshouldbedirectory = 1;
307:
308: remin = remout = -1;
309: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 310: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
311: verbose_mode ? " -v" : "",
1.35 deraadt 312: iamrecursive ? " -r" : "", pflag ? " -p" : "",
313: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 314:
1.18 markus 315: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 316:
317: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
318: toremote(targ, argc, argv);
319: else {
1.18 markus 320: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 321: if (targetshouldbedirectory)
322: verifydir(argv[argc - 1]);
323: }
324: exit(errs != 0);
325: }
326:
327: void
328: toremote(targ, argc, argv)
329: char *targ, *argv[];
330: int argc;
331: {
332: int i, len;
333: char *bp, *host, *src, *suser, *thost, *tuser;
334:
335: *targ++ = 0;
336: if (*targ == 0)
337: targ = ".";
338:
339: if ((thost = strchr(argv[argc - 1], '@'))) {
340: /* user@host */
341: *thost++ = 0;
342: tuser = argv[argc - 1];
343: if (*tuser == '\0')
344: tuser = NULL;
345: else if (!okname(tuser))
346: exit(1);
347: } else {
348: thost = argv[argc - 1];
349: tuser = NULL;
350: }
351:
352: for (i = 0; i < argc - 1; i++) {
353: src = colon(argv[i]);
1.18 markus 354: if (src) { /* remote to remote */
1.84 stevesk 355: static char *ssh_options =
1.89 markus 356: "-x -o'ClearAllForwardings yes'";
1.1 deraadt 357: *src++ = 0;
358: if (*src == 0)
359: src = ".";
360: host = strchr(argv[i], '@');
1.34 deraadt 361: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 362: strlen(src) + (tuser ? strlen(tuser) : 0) +
1.84 stevesk 363: strlen(thost) + strlen(targ) +
364: strlen(ssh_options) + CMDNEEDS + 20;
1.18 markus 365: bp = xmalloc(len);
1.1 deraadt 366: if (host) {
367: *host++ = 0;
1.23 markus 368: host = cleanhostname(host);
1.1 deraadt 369: suser = argv[i];
370: if (*suser == '\0')
371: suser = pwd->pw_name;
372: else if (!okname(suser))
373: continue;
1.55 deraadt 374: snprintf(bp, len,
1.84 stevesk 375: "%s%s %s -n "
1.55 deraadt 376: "-l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 377: ssh_program, verbose_mode ? " -v" : "",
1.84 stevesk 378: ssh_options, suser, host, cmd, src,
1.44 deraadt 379: tuser ? tuser : "", tuser ? "@" : "",
380: thost, targ);
1.23 markus 381: } else {
382: host = cleanhostname(argv[i]);
1.55 deraadt 383: snprintf(bp, len,
1.84 stevesk 384: "exec %s%s %s -n %s "
1.55 deraadt 385: "%s %s '%s%s%s:%s'",
1.44 deraadt 386: ssh_program, verbose_mode ? " -v" : "",
1.84 stevesk 387: ssh_options, host, cmd, src,
1.44 deraadt 388: tuser ? tuser : "", tuser ? "@" : "",
389: thost, targ);
1.23 markus 390: }
1.18 markus 391: if (verbose_mode)
392: fprintf(stderr, "Executing: %s\n", bp);
393: (void) system(bp);
394: (void) xfree(bp);
395: } else { /* local to remote */
1.1 deraadt 396: if (remin == -1) {
397: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 398: bp = xmalloc(len);
1.55 deraadt 399: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 400: host = cleanhostname(thost);
1.35 deraadt 401: if (do_cmd(host, tuser, bp, &remin,
402: &remout, argc) < 0)
1.18 markus 403: exit(1);
1.1 deraadt 404: if (response() < 0)
405: exit(1);
1.18 markus 406: (void) xfree(bp);
1.1 deraadt 407: }
1.18 markus 408: source(1, argv + i);
1.1 deraadt 409: }
410: }
411: }
412:
413: void
414: tolocal(argc, argv)
415: int argc;
416: char *argv[];
417: {
418: int i, len;
419: char *bp, *host, *src, *suser;
420:
421: for (i = 0; i < argc - 1; i++) {
1.18 markus 422: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 423: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 424: strlen(argv[argc - 1]) + 20;
1.1 deraadt 425: bp = xmalloc(len);
1.55 deraadt 426: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 427: iamrecursive ? " -r" : "", pflag ? " -p" : "",
428: argv[i], argv[argc - 1]);
1.18 markus 429: if (verbose_mode)
430: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 431: if (system(bp))
432: ++errs;
1.18 markus 433: (void) xfree(bp);
1.1 deraadt 434: continue;
435: }
436: *src++ = 0;
437: if (*src == 0)
438: src = ".";
439: if ((host = strchr(argv[i], '@')) == NULL) {
440: host = argv[i];
441: suser = NULL;
442: } else {
443: *host++ = 0;
444: suser = argv[i];
445: if (*suser == '\0')
446: suser = pwd->pw_name;
447: else if (!okname(suser))
448: continue;
449: }
1.23 markus 450: host = cleanhostname(host);
1.1 deraadt 451: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 452: bp = xmalloc(len);
1.55 deraadt 453: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 454: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 455: (void) xfree(bp);
456: ++errs;
457: continue;
1.1 deraadt 458: }
1.18 markus 459: xfree(bp);
1.1 deraadt 460: sink(1, argv + argc - 1);
1.18 markus 461: (void) close(remin);
1.1 deraadt 462: remin = remout = -1;
463: }
464: }
465:
466: void
467: source(argc, argv)
468: int argc;
469: char *argv[];
470: {
471: struct stat stb;
472: static BUF buffer;
473: BUF *bp;
1.68 markus 474: off_t i, amt, result;
475: int fd, haderr, indx;
1.1 deraadt 476: char *last, *name, buf[2048];
1.65 deraadt 477: int len;
1.1 deraadt 478:
479: for (indx = 0; indx < argc; ++indx) {
1.18 markus 480: name = argv[indx];
1.11 aaron 481: statbytes = 0;
1.65 deraadt 482: len = strlen(name);
483: while (len > 1 && name[len-1] == '/')
484: name[--len] = '\0';
1.85 markus 485: if (strchr(name, '\n') != NULL) {
486: run_err("%s: skipping, filename contains a newline",
487: name);
488: goto next;
489: }
1.1 deraadt 490: if ((fd = open(name, O_RDONLY, 0)) < 0)
491: goto syserr;
492: if (fstat(fd, &stb) < 0) {
493: syserr: run_err("%s: %s", name, strerror(errno));
494: goto next;
495: }
496: switch (stb.st_mode & S_IFMT) {
497: case S_IFREG:
498: break;
499: case S_IFDIR:
500: if (iamrecursive) {
501: rsource(name, &stb);
502: goto next;
503: }
504: /* FALLTHROUGH */
505: default:
506: run_err("%s: not a regular file", name);
507: goto next;
508: }
509: if ((last = strrchr(name, '/')) == NULL)
510: last = name;
511: else
512: ++last;
1.11 aaron 513: curfile = last;
1.1 deraadt 514: if (pflag) {
515: /*
516: * Make it compatible with possible future
517: * versions expecting microseconds.
518: */
1.55 deraadt 519: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 520: (u_long) stb.st_mtime,
521: (u_long) stb.st_atime);
1.29 deraadt 522: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 523: if (response() < 0)
524: goto next;
525: }
526: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 527: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 528: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 529: (long long)stb.st_size, last);
1.18 markus 530: if (verbose_mode) {
531: fprintf(stderr, "Sending file modes: %s", buf);
532: fflush(stderr);
533: }
1.29 deraadt 534: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 535: if (response() < 0)
536: goto next;
537: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 538: next: (void) close(fd);
1.1 deraadt 539: continue;
540: }
1.12 aaron 541: if (showprogress) {
542: totalbytes = stb.st_size;
1.6 aaron 543: progressmeter(-1);
1.12 aaron 544: }
1.1 deraadt 545: /* Keep writing after an error so that we stay sync'd up. */
546: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
547: amt = bp->cnt;
548: if (i + amt > stb.st_size)
549: amt = stb.st_size - i;
550: if (!haderr) {
1.30 deraadt 551: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 552: if (result != amt)
553: haderr = result >= 0 ? EIO : errno;
554: }
555: if (haderr)
1.29 deraadt 556: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 557: else {
1.29 deraadt 558: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 559: if (result != amt)
560: haderr = result >= 0 ? EIO : errno;
1.4 aaron 561: statbytes += result;
1.1 deraadt 562: }
563: }
1.18 markus 564: if (showprogress)
1.6 aaron 565: progressmeter(1);
1.4 aaron 566:
1.1 deraadt 567: if (close(fd) < 0 && !haderr)
568: haderr = errno;
569: if (!haderr)
1.29 deraadt 570: (void) atomicio(write, remout, "", 1);
1.1 deraadt 571: else
572: run_err("%s: %s", name, strerror(haderr));
1.18 markus 573: (void) response();
1.1 deraadt 574: }
575: }
576:
577: void
578: rsource(name, statp)
579: char *name;
580: struct stat *statp;
581: {
582: DIR *dirp;
583: struct dirent *dp;
584: char *last, *vect[1], path[1100];
585:
586: if (!(dirp = opendir(name))) {
587: run_err("%s: %s", name, strerror(errno));
588: return;
589: }
590: last = strrchr(name, '/');
591: if (last == 0)
592: last = name;
593: else
594: last++;
595: if (pflag) {
1.55 deraadt 596: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 597: (u_long) statp->st_mtime,
598: (u_long) statp->st_atime);
1.29 deraadt 599: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 600: if (response() < 0) {
601: closedir(dirp);
602: return;
603: }
604: }
1.55 deraadt 605: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 606: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 607: if (verbose_mode)
608: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 609: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 610: if (response() < 0) {
611: closedir(dirp);
612: return;
613: }
1.63 stevesk 614: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 615: if (dp->d_ino == 0)
616: continue;
617: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
618: continue;
619: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
620: run_err("%s/%s: name too long", name, dp->d_name);
621: continue;
622: }
1.55 deraadt 623: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 624: vect[0] = path;
625: source(1, vect);
626: }
1.18 markus 627: (void) closedir(dirp);
1.29 deraadt 628: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 629: (void) response();
1.1 deraadt 630: }
631:
632: void
633: sink(argc, argv)
634: int argc;
635: char *argv[];
636: {
637: static BUF buffer;
638: struct stat stb;
1.18 markus 639: enum {
640: YES, NO, DISPLAYED
641: } wrerr;
1.1 deraadt 642: BUF *bp;
643: off_t i, j;
644: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 645: off_t size;
646: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 647: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 648: struct timeval tv[2];
1.1 deraadt 649:
1.66 stevesk 650: #define atime tv[0]
651: #define mtime tv[1]
1.75 deraadt 652: #define SCREWUP(str) do { why = str; goto screwup; } while (0)
1.1 deraadt 653:
654: setimes = targisdir = 0;
655: mask = umask(0);
656: if (!pflag)
1.18 markus 657: (void) umask(mask);
1.1 deraadt 658: if (argc != 1) {
659: run_err("ambiguous target");
660: exit(1);
661: }
662: targ = *argv;
663: if (targetshouldbedirectory)
664: verifydir(targ);
1.18 markus 665:
1.29 deraadt 666: (void) atomicio(write, remout, "", 1);
1.1 deraadt 667: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
668: targisdir = 1;
669: for (first = 1;; first = 0) {
670: cp = buf;
1.30 deraadt 671: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 672: return;
673: if (*cp++ == '\n')
674: SCREWUP("unexpected <newline>");
675: do {
1.30 deraadt 676: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 677: SCREWUP("lost connection");
678: *cp++ = ch;
679: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
680: *cp = 0;
681:
682: if (buf[0] == '\01' || buf[0] == '\02') {
683: if (iamremote == 0)
1.29 deraadt 684: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 685: buf + 1, strlen(buf + 1));
1.1 deraadt 686: if (buf[0] == '\02')
687: exit(1);
688: ++errs;
689: continue;
690: }
691: if (buf[0] == 'E') {
1.29 deraadt 692: (void) atomicio(write, remout, "", 1);
1.1 deraadt 693: return;
694: }
695: if (ch == '\n')
696: *--cp = 0;
697:
698: cp = buf;
699: if (*cp == 'T') {
700: setimes++;
701: cp++;
1.66 stevesk 702: mtime.tv_sec = strtol(cp, &cp, 10);
703: if (!cp || *cp++ != ' ')
1.1 deraadt 704: SCREWUP("mtime.sec not delimited");
1.66 stevesk 705: mtime.tv_usec = strtol(cp, &cp, 10);
706: if (!cp || *cp++ != ' ')
1.1 deraadt 707: SCREWUP("mtime.usec not delimited");
1.66 stevesk 708: atime.tv_sec = strtol(cp, &cp, 10);
709: if (!cp || *cp++ != ' ')
1.1 deraadt 710: SCREWUP("atime.sec not delimited");
1.66 stevesk 711: atime.tv_usec = strtol(cp, &cp, 10);
712: if (!cp || *cp++ != '\0')
1.1 deraadt 713: SCREWUP("atime.usec not delimited");
1.29 deraadt 714: (void) atomicio(write, remout, "", 1);
1.1 deraadt 715: continue;
716: }
717: if (*cp != 'C' && *cp != 'D') {
718: /*
719: * Check for the case "rcp remote:foo\* local:bar".
720: * In this case, the line "No match." can be returned
721: * by the shell before the rcp command on the remote is
722: * executed so the ^Aerror_message convention isn't
723: * followed.
724: */
725: if (first) {
726: run_err("%s", cp);
727: exit(1);
728: }
729: SCREWUP("expected control record");
730: }
731: mode = 0;
732: for (++cp; cp < buf + 5; cp++) {
733: if (*cp < '0' || *cp > '7')
734: SCREWUP("bad mode");
735: mode = (mode << 3) | (*cp - '0');
736: }
737: if (*cp++ != ' ')
738: SCREWUP("mode not delimited");
739:
1.63 stevesk 740: for (size = 0; isdigit(*cp);)
1.1 deraadt 741: size = size * 10 + (*cp++ - '0');
742: if (*cp++ != ' ')
743: SCREWUP("size not delimited");
744: if (targisdir) {
745: static char *namebuf;
746: static int cursize;
747: size_t need;
748:
749: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 750: if (need > cursize) {
1.58 danh 751: if (namebuf)
752: xfree(namebuf);
1.18 markus 753: namebuf = xmalloc(need);
1.55 deraadt 754: cursize = need;
755: }
756: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 757: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 758: np = namebuf;
759: } else
760: np = targ;
1.12 aaron 761: curfile = cp;
1.1 deraadt 762: exists = stat(np, &stb) == 0;
763: if (buf[0] == 'D') {
764: int mod_flag = pflag;
765: if (exists) {
766: if (!S_ISDIR(stb.st_mode)) {
767: errno = ENOTDIR;
768: goto bad;
769: }
770: if (pflag)
1.18 markus 771: (void) chmod(np, mode);
1.1 deraadt 772: } else {
1.18 markus 773: /* Handle copying from a read-only
774: directory */
1.1 deraadt 775: mod_flag = 1;
776: if (mkdir(np, mode | S_IRWXU) < 0)
777: goto bad;
778: }
1.58 danh 779: vect[0] = xstrdup(np);
1.1 deraadt 780: sink(1, vect);
781: if (setimes) {
782: setimes = 0;
1.59 deraadt 783: if (utimes(vect[0], tv) < 0)
1.18 markus 784: run_err("%s: set times: %s",
1.59 deraadt 785: vect[0], strerror(errno));
1.1 deraadt 786: }
787: if (mod_flag)
1.59 deraadt 788: (void) chmod(vect[0], mode);
789: if (vect[0])
790: xfree(vect[0]);
1.1 deraadt 791: continue;
792: }
793: omode = mode;
794: mode |= S_IWRITE;
1.71 markus 795: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 796: bad: run_err("%s: %s", np, strerror(errno));
797: continue;
798: }
1.29 deraadt 799: (void) atomicio(write, remout, "", 1);
1.1 deraadt 800: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 801: (void) close(ofd);
1.1 deraadt 802: continue;
803: }
804: cp = bp->buf;
805: wrerr = NO;
1.7 deraadt 806:
807: if (showprogress) {
808: totalbytes = size;
809: progressmeter(-1);
810: }
1.12 aaron 811: statbytes = 0;
1.1 deraadt 812: for (count = i = 0; i < size; i += 4096) {
813: amt = 4096;
814: if (i + amt > size)
815: amt = size - i;
816: count += amt;
817: do {
1.43 markus 818: j = read(remin, cp, amt);
1.78 deraadt 819: if (j == -1 && (errno == EINTR ||
820: errno == EAGAIN)) {
1.43 markus 821: continue;
822: } else if (j <= 0) {
1.1 deraadt 823: run_err("%s", j ? strerror(errno) :
1.63 stevesk 824: "dropped connection");
1.1 deraadt 825: exit(1);
826: }
827: amt -= j;
828: cp += j;
1.18 markus 829: statbytes += j;
1.1 deraadt 830: } while (amt > 0);
831: if (count == bp->cnt) {
832: /* Keep reading so we stay sync'd up. */
833: if (wrerr == NO) {
1.30 deraadt 834: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 835: if (j != count) {
836: wrerr = YES;
1.18 markus 837: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 838: }
839: }
840: count = 0;
841: cp = bp->buf;
842: }
843: }
1.7 deraadt 844: if (showprogress)
845: progressmeter(1);
1.1 deraadt 846: if (count != 0 && wrerr == NO &&
1.30 deraadt 847: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 848: wrerr = YES;
1.18 markus 849: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 850: }
851: if (ftruncate(ofd, size)) {
852: run_err("%s: truncate: %s", np, strerror(errno));
853: wrerr = DISPLAYED;
854: }
855: if (pflag) {
856: if (exists || omode != mode)
857: if (fchmod(ofd, omode))
858: run_err("%s: set mode: %s",
1.63 stevesk 859: np, strerror(errno));
1.1 deraadt 860: } else {
861: if (!exists && omode != mode)
862: if (fchmod(ofd, omode & ~mask))
863: run_err("%s: set mode: %s",
1.63 stevesk 864: np, strerror(errno));
1.1 deraadt 865: }
1.33 provos 866: if (close(ofd) == -1) {
867: wrerr = YES;
868: wrerrno = errno;
869: }
1.18 markus 870: (void) response();
1.1 deraadt 871: if (setimes && wrerr == NO) {
872: setimes = 0;
1.40 markus 873: if (utimes(np, tv) < 0) {
1.1 deraadt 874: run_err("%s: set times: %s",
1.63 stevesk 875: np, strerror(errno));
1.1 deraadt 876: wrerr = DISPLAYED;
877: }
878: }
1.18 markus 879: switch (wrerr) {
1.1 deraadt 880: case YES:
881: run_err("%s: %s", np, strerror(wrerrno));
882: break;
883: case NO:
1.29 deraadt 884: (void) atomicio(write, remout, "", 1);
1.1 deraadt 885: break;
886: case DISPLAYED:
887: break;
888: }
889: }
890: screwup:
891: run_err("protocol error: %s", why);
892: exit(1);
893: }
894:
895: int
1.86 itojun 896: response(void)
1.1 deraadt 897: {
898: char ch, *cp, resp, rbuf[2048];
899:
1.30 deraadt 900: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 901: lostconn(0);
902:
903: cp = rbuf;
1.18 markus 904: switch (resp) {
905: case 0: /* ok */
1.1 deraadt 906: return (0);
907: default:
908: *cp++ = resp;
909: /* FALLTHROUGH */
1.18 markus 910: case 1: /* error, followed by error msg */
911: case 2: /* fatal error, "" */
1.1 deraadt 912: do {
1.30 deraadt 913: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 914: lostconn(0);
915: *cp++ = ch;
916: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
917:
918: if (!iamremote)
1.29 deraadt 919: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 920: ++errs;
921: if (resp == 1)
922: return (-1);
923: exit(1);
924: }
925: /* NOTREACHED */
926: }
927:
928: void
1.86 itojun 929: usage(void)
1.1 deraadt 930: {
1.83 stevesk 931: (void) fprintf(stderr,
1.90 ! deraadt 932: "usage: scp [-pqrvBC46] [-F config] [-S program] [-P port]\n"
! 933: " [-c cipher] [-i identity] [-o option]\n"
! 934: " [[user@]host1:]file1 [...] [[user@]host2:]file2\n");
1.1 deraadt 935: exit(1);
936: }
937:
938: void
1.18 markus 939: run_err(const char *fmt,...)
1.1 deraadt 940: {
941: static FILE *fp;
942: va_list ap;
943:
944: ++errs;
945: if (fp == NULL && !(fp = fdopen(remout, "w")))
946: return;
1.18 markus 947: (void) fprintf(fp, "%c", 0x01);
948: (void) fprintf(fp, "scp: ");
1.73 markus 949: va_start(ap, fmt);
1.18 markus 950: (void) vfprintf(fp, fmt, ap);
1.73 markus 951: va_end(ap);
1.18 markus 952: (void) fprintf(fp, "\n");
953: (void) fflush(fp);
954:
955: if (!iamremote) {
1.73 markus 956: va_start(ap, fmt);
1.18 markus 957: vfprintf(stderr, fmt, ap);
1.73 markus 958: va_end(ap);
1.18 markus 959: fprintf(stderr, "\n");
960: }
1.1 deraadt 961: }
962:
963: void
964: verifydir(cp)
965: char *cp;
966: {
967: struct stat stb;
968:
969: if (!stat(cp, &stb)) {
970: if (S_ISDIR(stb.st_mode))
971: return;
972: errno = ENOTDIR;
973: }
974: run_err("%s: %s", cp, strerror(errno));
975: exit(1);
976: }
977:
978: int
979: okname(cp0)
980: char *cp0;
981: {
982: int c;
983: char *cp;
984:
985: cp = cp0;
986: do {
1.75 deraadt 987: c = (int)*cp;
1.1 deraadt 988: if (c & 0200)
989: goto bad;
1.46 markus 990: if (!isalpha(c) && !isdigit(c) &&
991: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 992: goto bad;
993: } while (*++cp);
994: return (1);
995:
1.25 markus 996: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 997: return (0);
998: }
999:
1000: BUF *
1001: allocbuf(bp, fd, blksize)
1002: BUF *bp;
1003: int fd, blksize;
1004: {
1005: size_t size;
1006: struct stat stb;
1007:
1008: if (fstat(fd, &stb) < 0) {
1009: run_err("fstat: %s", strerror(errno));
1010: return (0);
1011: }
1.18 markus 1012: if (stb.st_blksize == 0)
1013: size = blksize;
1014: else
1015: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1016: stb.st_blksize;
1.1 deraadt 1017: if (bp->cnt >= size)
1018: return (bp);
1.18 markus 1019: if (bp->buf == NULL)
1020: bp->buf = xmalloc(size);
1021: else
1022: bp->buf = xrealloc(bp->buf, size);
1.81 markus 1023: memset(bp->buf, 0, size);
1.1 deraadt 1024: bp->cnt = size;
1025: return (bp);
1026: }
1027:
1028: void
1029: lostconn(signo)
1030: int signo;
1031: {
1032: if (!iamremote)
1.74 markus 1033: write(STDERR_FILENO, "lost connection\n", 16);
1034: if (signo)
1035: _exit(1);
1036: else
1037: exit(1);
1.1 deraadt 1038: }
1.4 aaron 1039:
1.76 itojun 1040: static void
1.26 markus 1041: updateprogressmeter(int ignore)
1.4 aaron 1042: {
1.9 deraadt 1043: int save_errno = errno;
1044:
1.4 aaron 1045: progressmeter(0);
1.79 stevesk 1046: signal(SIGALRM, updateprogressmeter);
1047: alarm(PROGRESSTIME);
1.9 deraadt 1048: errno = save_errno;
1.4 aaron 1049: }
1050:
1.76 itojun 1051: static int
1.56 itojun 1052: foregroundproc(void)
1.16 deraadt 1053: {
1054: static pid_t pgrp = -1;
1055: int ctty_pgrp;
1056:
1057: if (pgrp == -1)
1058: pgrp = getpgrp();
1059:
1.18 markus 1060: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1061: ctty_pgrp == pgrp));
1.16 deraadt 1062: }
1063:
1.8 deraadt 1064: void
1065: progressmeter(int flag)
1.4 aaron 1066: {
1067: static const char prefixes[] = " KMGTP";
1068: static struct timeval lastupdate;
1.11 aaron 1069: static off_t lastsize;
1.4 aaron 1070: struct timeval now, td, wait;
1071: off_t cursize, abbrevsize;
1072: double elapsed;
1073: int ratio, barlength, i, remaining;
1.87 deraadt 1074: char buf[512];
1.4 aaron 1075:
1076: if (flag == -1) {
1.18 markus 1077: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1078: lastupdate = start;
1.11 aaron 1079: lastsize = 0;
1.18 markus 1080: }
1.16 deraadt 1081: if (foregroundproc() == 0)
1082: return;
1083:
1.18 markus 1084: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1085: cursize = statbytes;
1.13 aaron 1086: if (totalbytes != 0) {
1.21 markus 1087: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1088: ratio = MAX(ratio, 0);
1089: ratio = MIN(ratio, 100);
1.18 markus 1090: } else
1.13 aaron 1091: ratio = 100;
1092:
1.18 markus 1093: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1094:
1.11 aaron 1095: barlength = getttywidth() - 51;
1.4 aaron 1096: if (barlength > 0) {
1097: i = barlength * ratio / 100;
1098: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1099: "|%.*s%*s|", i,
1.87 deraadt 1100: "*******************************************************"
1101: "*******************************************************"
1102: "*******************************************************"
1103: "*******************************************************"
1104: "*******************************************************"
1105: "*******************************************************"
1106: "*******************************************************",
1.35 deraadt 1107: barlength - i, "");
1.4 aaron 1108: }
1109: i = 0;
1110: abbrevsize = cursize;
1111: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1112: i++;
1113: abbrevsize >>= 10;
1114: }
1.54 itojun 1115: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1116: (unsigned long long) abbrevsize, prefixes[i],
1117: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1118:
1119: timersub(&now, &lastupdate, &wait);
1120: if (cursize > lastsize) {
1121: lastupdate = now;
1122: lastsize = cursize;
1123: if (wait.tv_sec >= STALLTIME) {
1124: start.tv_sec += wait.tv_sec;
1125: start.tv_usec += wait.tv_usec;
1126: }
1127: wait.tv_sec = 0;
1128: }
1129: timersub(&now, &start, &td);
1.6 aaron 1130: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1131:
1.44 deraadt 1132: if (flag != 1 &&
1133: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1134: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1135: " --:-- ETA");
1.4 aaron 1136: } else if (wait.tv_sec >= STALLTIME) {
1137: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1138: " - stalled -");
1.4 aaron 1139: } else {
1.28 deraadt 1140: if (flag != 1)
1.44 deraadt 1141: remaining = (int)(totalbytes / (statbytes / elapsed) -
1142: elapsed);
1.28 deraadt 1143: else
1144: remaining = elapsed;
1145:
1.14 aaron 1146: i = remaining / 3600;
1.4 aaron 1147: if (i)
1148: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1149: "%2d:", i);
1.4 aaron 1150: else
1151: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1152: " ");
1.4 aaron 1153: i = remaining % 3600;
1154: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1155: "%02d:%02d%s", i / 60, i % 60,
1156: (flag != 1) ? " ETA" : " ");
1.4 aaron 1157: }
1.10 deraadt 1158: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1159:
1160: if (flag == -1) {
1.26 markus 1161: signal(SIGALRM, updateprogressmeter);
1.79 stevesk 1162: alarm(PROGRESSTIME);
1.4 aaron 1163: } else if (flag == 1) {
1.79 stevesk 1164: alarm(0);
1.29 deraadt 1165: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1166: statbytes = 0;
1.4 aaron 1167: }
1168: }
1169:
1.8 deraadt 1170: int
1171: getttywidth(void)
1.4 aaron 1172: {
1173: struct winsize winsize;
1174:
1175: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1176: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1177: else
1.18 markus 1178: return (80);
1.4 aaron 1179: }
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