Annotation of src/usr.bin/ssh/scp.c, Revision 1.83
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"
1.83 ! stevesk 78: RCSID("$OpenBSD: scp.c,v 1.82 2001/09/12 18:18:25 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"
1.69 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");
1.70 mouring 225: addargs(&args, "-oFallBackToRsh no");
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 */
1.1 deraadt 355: *src++ = 0;
356: if (*src == 0)
357: src = ".";
358: host = strchr(argv[i], '@');
1.34 deraadt 359: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 360: strlen(src) + (tuser ? strlen(tuser) : 0) +
361: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 362: bp = xmalloc(len);
1.1 deraadt 363: if (host) {
364: *host++ = 0;
1.23 markus 365: host = cleanhostname(host);
1.1 deraadt 366: suser = argv[i];
367: if (*suser == '\0')
368: suser = pwd->pw_name;
369: else if (!okname(suser))
370: continue;
1.55 deraadt 371: snprintf(bp, len,
372: "%s%s -x -o'FallBackToRsh no' -n "
373: "-l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 374: ssh_program, verbose_mode ? " -v" : "",
375: suser, host, cmd, src,
376: tuser ? tuser : "", tuser ? "@" : "",
377: thost, targ);
1.23 markus 378: } else {
379: host = cleanhostname(argv[i]);
1.55 deraadt 380: snprintf(bp, len,
381: "exec %s%s -x -o'FallBackToRsh no' -n %s "
382: "%s %s '%s%s%s:%s'",
1.44 deraadt 383: ssh_program, verbose_mode ? " -v" : "",
384: host, cmd, src,
385: tuser ? tuser : "", tuser ? "@" : "",
386: thost, targ);
1.23 markus 387: }
1.18 markus 388: if (verbose_mode)
389: fprintf(stderr, "Executing: %s\n", bp);
390: (void) system(bp);
391: (void) xfree(bp);
392: } else { /* local to remote */
1.1 deraadt 393: if (remin == -1) {
394: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 395: bp = xmalloc(len);
1.55 deraadt 396: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 397: host = cleanhostname(thost);
1.35 deraadt 398: if (do_cmd(host, tuser, bp, &remin,
399: &remout, argc) < 0)
1.18 markus 400: exit(1);
1.1 deraadt 401: if (response() < 0)
402: exit(1);
1.18 markus 403: (void) xfree(bp);
1.1 deraadt 404: }
1.18 markus 405: source(1, argv + i);
1.1 deraadt 406: }
407: }
408: }
409:
410: void
411: tolocal(argc, argv)
412: int argc;
413: char *argv[];
414: {
415: int i, len;
416: char *bp, *host, *src, *suser;
417:
418: for (i = 0; i < argc - 1; i++) {
1.18 markus 419: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 420: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 421: strlen(argv[argc - 1]) + 20;
1.1 deraadt 422: bp = xmalloc(len);
1.55 deraadt 423: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 424: iamrecursive ? " -r" : "", pflag ? " -p" : "",
425: argv[i], argv[argc - 1]);
1.18 markus 426: if (verbose_mode)
427: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 428: if (system(bp))
429: ++errs;
1.18 markus 430: (void) xfree(bp);
1.1 deraadt 431: continue;
432: }
433: *src++ = 0;
434: if (*src == 0)
435: src = ".";
436: if ((host = strchr(argv[i], '@')) == NULL) {
437: host = argv[i];
438: suser = NULL;
439: } else {
440: *host++ = 0;
441: suser = argv[i];
442: if (*suser == '\0')
443: suser = pwd->pw_name;
444: else if (!okname(suser))
445: continue;
446: }
1.23 markus 447: host = cleanhostname(host);
1.1 deraadt 448: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 449: bp = xmalloc(len);
1.55 deraadt 450: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 451: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 452: (void) xfree(bp);
453: ++errs;
454: continue;
1.1 deraadt 455: }
1.18 markus 456: xfree(bp);
1.1 deraadt 457: sink(1, argv + argc - 1);
1.18 markus 458: (void) close(remin);
1.1 deraadt 459: remin = remout = -1;
460: }
461: }
462:
463: void
464: source(argc, argv)
465: int argc;
466: char *argv[];
467: {
468: struct stat stb;
469: static BUF buffer;
470: BUF *bp;
1.68 markus 471: off_t i, amt, result;
472: int fd, haderr, indx;
1.1 deraadt 473: char *last, *name, buf[2048];
1.65 deraadt 474: int len;
1.1 deraadt 475:
476: for (indx = 0; indx < argc; ++indx) {
1.18 markus 477: name = argv[indx];
1.11 aaron 478: statbytes = 0;
1.65 deraadt 479: len = strlen(name);
480: while (len > 1 && name[len-1] == '/')
481: name[--len] = '\0';
1.1 deraadt 482: if ((fd = open(name, O_RDONLY, 0)) < 0)
483: goto syserr;
484: if (fstat(fd, &stb) < 0) {
485: syserr: run_err("%s: %s", name, strerror(errno));
486: goto next;
487: }
488: switch (stb.st_mode & S_IFMT) {
489: case S_IFREG:
490: break;
491: case S_IFDIR:
492: if (iamrecursive) {
493: rsource(name, &stb);
494: goto next;
495: }
496: /* FALLTHROUGH */
497: default:
498: run_err("%s: not a regular file", name);
499: goto next;
500: }
501: if ((last = strrchr(name, '/')) == NULL)
502: last = name;
503: else
504: ++last;
1.11 aaron 505: curfile = last;
1.1 deraadt 506: if (pflag) {
507: /*
508: * Make it compatible with possible future
509: * versions expecting microseconds.
510: */
1.55 deraadt 511: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 512: (u_long) stb.st_mtime,
513: (u_long) stb.st_atime);
1.29 deraadt 514: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 515: if (response() < 0)
516: goto next;
517: }
518: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 519: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 520: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 521: (long long)stb.st_size, last);
1.18 markus 522: if (verbose_mode) {
523: fprintf(stderr, "Sending file modes: %s", buf);
524: fflush(stderr);
525: }
1.29 deraadt 526: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 527: if (response() < 0)
528: goto next;
529: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 530: next: (void) close(fd);
1.1 deraadt 531: continue;
532: }
1.12 aaron 533: if (showprogress) {
534: totalbytes = stb.st_size;
1.6 aaron 535: progressmeter(-1);
1.12 aaron 536: }
1.1 deraadt 537: /* Keep writing after an error so that we stay sync'd up. */
538: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
539: amt = bp->cnt;
540: if (i + amt > stb.st_size)
541: amt = stb.st_size - i;
542: if (!haderr) {
1.30 deraadt 543: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 544: if (result != amt)
545: haderr = result >= 0 ? EIO : errno;
546: }
547: if (haderr)
1.29 deraadt 548: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 549: else {
1.29 deraadt 550: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 551: if (result != amt)
552: haderr = result >= 0 ? EIO : errno;
1.4 aaron 553: statbytes += result;
1.1 deraadt 554: }
555: }
1.18 markus 556: if (showprogress)
1.6 aaron 557: progressmeter(1);
1.4 aaron 558:
1.1 deraadt 559: if (close(fd) < 0 && !haderr)
560: haderr = errno;
561: if (!haderr)
1.29 deraadt 562: (void) atomicio(write, remout, "", 1);
1.1 deraadt 563: else
564: run_err("%s: %s", name, strerror(haderr));
1.18 markus 565: (void) response();
1.1 deraadt 566: }
567: }
568:
569: void
570: rsource(name, statp)
571: char *name;
572: struct stat *statp;
573: {
574: DIR *dirp;
575: struct dirent *dp;
576: char *last, *vect[1], path[1100];
577:
578: if (!(dirp = opendir(name))) {
579: run_err("%s: %s", name, strerror(errno));
580: return;
581: }
582: last = strrchr(name, '/');
583: if (last == 0)
584: last = name;
585: else
586: last++;
587: if (pflag) {
1.55 deraadt 588: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 589: (u_long) statp->st_mtime,
590: (u_long) statp->st_atime);
1.29 deraadt 591: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 592: if (response() < 0) {
593: closedir(dirp);
594: return;
595: }
596: }
1.55 deraadt 597: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 598: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 599: if (verbose_mode)
600: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 601: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 602: if (response() < 0) {
603: closedir(dirp);
604: return;
605: }
1.63 stevesk 606: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 607: if (dp->d_ino == 0)
608: continue;
609: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
610: continue;
611: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
612: run_err("%s/%s: name too long", name, dp->d_name);
613: continue;
614: }
1.55 deraadt 615: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 616: vect[0] = path;
617: source(1, vect);
618: }
1.18 markus 619: (void) closedir(dirp);
1.29 deraadt 620: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 621: (void) response();
1.1 deraadt 622: }
623:
624: void
625: sink(argc, argv)
626: int argc;
627: char *argv[];
628: {
629: static BUF buffer;
630: struct stat stb;
1.18 markus 631: enum {
632: YES, NO, DISPLAYED
633: } wrerr;
1.1 deraadt 634: BUF *bp;
635: off_t i, j;
636: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 637: off_t size;
638: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 639: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 640: struct timeval tv[2];
1.1 deraadt 641:
1.66 stevesk 642: #define atime tv[0]
643: #define mtime tv[1]
1.75 deraadt 644: #define SCREWUP(str) do { why = str; goto screwup; } while (0)
1.1 deraadt 645:
646: setimes = targisdir = 0;
647: mask = umask(0);
648: if (!pflag)
1.18 markus 649: (void) umask(mask);
1.1 deraadt 650: if (argc != 1) {
651: run_err("ambiguous target");
652: exit(1);
653: }
654: targ = *argv;
655: if (targetshouldbedirectory)
656: verifydir(targ);
1.18 markus 657:
1.29 deraadt 658: (void) atomicio(write, remout, "", 1);
1.1 deraadt 659: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
660: targisdir = 1;
661: for (first = 1;; first = 0) {
662: cp = buf;
1.30 deraadt 663: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 664: return;
665: if (*cp++ == '\n')
666: SCREWUP("unexpected <newline>");
667: do {
1.30 deraadt 668: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 669: SCREWUP("lost connection");
670: *cp++ = ch;
671: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
672: *cp = 0;
673:
674: if (buf[0] == '\01' || buf[0] == '\02') {
675: if (iamremote == 0)
1.29 deraadt 676: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 677: buf + 1, strlen(buf + 1));
1.1 deraadt 678: if (buf[0] == '\02')
679: exit(1);
680: ++errs;
681: continue;
682: }
683: if (buf[0] == 'E') {
1.29 deraadt 684: (void) atomicio(write, remout, "", 1);
1.1 deraadt 685: return;
686: }
687: if (ch == '\n')
688: *--cp = 0;
689:
690: cp = buf;
691: if (*cp == 'T') {
692: setimes++;
693: cp++;
1.66 stevesk 694: mtime.tv_sec = strtol(cp, &cp, 10);
695: if (!cp || *cp++ != ' ')
1.1 deraadt 696: SCREWUP("mtime.sec not delimited");
1.66 stevesk 697: mtime.tv_usec = strtol(cp, &cp, 10);
698: if (!cp || *cp++ != ' ')
1.1 deraadt 699: SCREWUP("mtime.usec not delimited");
1.66 stevesk 700: atime.tv_sec = strtol(cp, &cp, 10);
701: if (!cp || *cp++ != ' ')
1.1 deraadt 702: SCREWUP("atime.sec not delimited");
1.66 stevesk 703: atime.tv_usec = strtol(cp, &cp, 10);
704: if (!cp || *cp++ != '\0')
1.1 deraadt 705: SCREWUP("atime.usec not delimited");
1.29 deraadt 706: (void) atomicio(write, remout, "", 1);
1.1 deraadt 707: continue;
708: }
709: if (*cp != 'C' && *cp != 'D') {
710: /*
711: * Check for the case "rcp remote:foo\* local:bar".
712: * In this case, the line "No match." can be returned
713: * by the shell before the rcp command on the remote is
714: * executed so the ^Aerror_message convention isn't
715: * followed.
716: */
717: if (first) {
718: run_err("%s", cp);
719: exit(1);
720: }
721: SCREWUP("expected control record");
722: }
723: mode = 0;
724: for (++cp; cp < buf + 5; cp++) {
725: if (*cp < '0' || *cp > '7')
726: SCREWUP("bad mode");
727: mode = (mode << 3) | (*cp - '0');
728: }
729: if (*cp++ != ' ')
730: SCREWUP("mode not delimited");
731:
1.63 stevesk 732: for (size = 0; isdigit(*cp);)
1.1 deraadt 733: size = size * 10 + (*cp++ - '0');
734: if (*cp++ != ' ')
735: SCREWUP("size not delimited");
736: if (targisdir) {
737: static char *namebuf;
738: static int cursize;
739: size_t need;
740:
741: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 742: if (need > cursize) {
1.58 danh 743: if (namebuf)
744: xfree(namebuf);
1.18 markus 745: namebuf = xmalloc(need);
1.55 deraadt 746: cursize = need;
747: }
748: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.35 deraadt 749: *targ ? "/" : "", cp);
1.1 deraadt 750: np = namebuf;
751: } else
752: np = targ;
1.12 aaron 753: curfile = cp;
1.1 deraadt 754: exists = stat(np, &stb) == 0;
755: if (buf[0] == 'D') {
756: int mod_flag = pflag;
757: if (exists) {
758: if (!S_ISDIR(stb.st_mode)) {
759: errno = ENOTDIR;
760: goto bad;
761: }
762: if (pflag)
1.18 markus 763: (void) chmod(np, mode);
1.1 deraadt 764: } else {
1.18 markus 765: /* Handle copying from a read-only
766: directory */
1.1 deraadt 767: mod_flag = 1;
768: if (mkdir(np, mode | S_IRWXU) < 0)
769: goto bad;
770: }
1.58 danh 771: vect[0] = xstrdup(np);
1.1 deraadt 772: sink(1, vect);
773: if (setimes) {
774: setimes = 0;
1.59 deraadt 775: if (utimes(vect[0], tv) < 0)
1.18 markus 776: run_err("%s: set times: %s",
1.59 deraadt 777: vect[0], strerror(errno));
1.1 deraadt 778: }
779: if (mod_flag)
1.59 deraadt 780: (void) chmod(vect[0], mode);
781: if (vect[0])
782: xfree(vect[0]);
1.1 deraadt 783: continue;
784: }
785: omode = mode;
786: mode |= S_IWRITE;
1.71 markus 787: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 788: bad: run_err("%s: %s", np, strerror(errno));
789: continue;
790: }
1.29 deraadt 791: (void) atomicio(write, remout, "", 1);
1.1 deraadt 792: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 793: (void) close(ofd);
1.1 deraadt 794: continue;
795: }
796: cp = bp->buf;
797: wrerr = NO;
1.7 deraadt 798:
799: if (showprogress) {
800: totalbytes = size;
801: progressmeter(-1);
802: }
1.12 aaron 803: statbytes = 0;
1.1 deraadt 804: for (count = i = 0; i < size; i += 4096) {
805: amt = 4096;
806: if (i + amt > size)
807: amt = size - i;
808: count += amt;
809: do {
1.43 markus 810: j = read(remin, cp, amt);
1.78 deraadt 811: if (j == -1 && (errno == EINTR ||
812: errno == EAGAIN)) {
1.43 markus 813: continue;
814: } else if (j <= 0) {
1.1 deraadt 815: run_err("%s", j ? strerror(errno) :
1.63 stevesk 816: "dropped connection");
1.1 deraadt 817: exit(1);
818: }
819: amt -= j;
820: cp += j;
1.18 markus 821: statbytes += j;
1.1 deraadt 822: } while (amt > 0);
823: if (count == bp->cnt) {
824: /* Keep reading so we stay sync'd up. */
825: if (wrerr == NO) {
1.30 deraadt 826: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 827: if (j != count) {
828: wrerr = YES;
1.18 markus 829: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 830: }
831: }
832: count = 0;
833: cp = bp->buf;
834: }
835: }
1.7 deraadt 836: if (showprogress)
837: progressmeter(1);
1.1 deraadt 838: if (count != 0 && wrerr == NO &&
1.30 deraadt 839: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 840: wrerr = YES;
1.18 markus 841: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 842: }
843: if (ftruncate(ofd, size)) {
844: run_err("%s: truncate: %s", np, strerror(errno));
845: wrerr = DISPLAYED;
846: }
847: if (pflag) {
848: if (exists || omode != mode)
849: if (fchmod(ofd, omode))
850: run_err("%s: set mode: %s",
1.63 stevesk 851: np, strerror(errno));
1.1 deraadt 852: } else {
853: if (!exists && omode != mode)
854: if (fchmod(ofd, omode & ~mask))
855: run_err("%s: set mode: %s",
1.63 stevesk 856: np, strerror(errno));
1.1 deraadt 857: }
1.33 provos 858: if (close(ofd) == -1) {
859: wrerr = YES;
860: wrerrno = errno;
861: }
1.18 markus 862: (void) response();
1.1 deraadt 863: if (setimes && wrerr == NO) {
864: setimes = 0;
1.40 markus 865: if (utimes(np, tv) < 0) {
1.1 deraadt 866: run_err("%s: set times: %s",
1.63 stevesk 867: np, strerror(errno));
1.1 deraadt 868: wrerr = DISPLAYED;
869: }
870: }
1.18 markus 871: switch (wrerr) {
1.1 deraadt 872: case YES:
873: run_err("%s: %s", np, strerror(wrerrno));
874: break;
875: case NO:
1.29 deraadt 876: (void) atomicio(write, remout, "", 1);
1.1 deraadt 877: break;
878: case DISPLAYED:
879: break;
880: }
881: }
882: screwup:
883: run_err("protocol error: %s", why);
884: exit(1);
885: }
886:
887: int
888: response()
889: {
890: char ch, *cp, resp, rbuf[2048];
891:
1.30 deraadt 892: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 893: lostconn(0);
894:
895: cp = rbuf;
1.18 markus 896: switch (resp) {
897: case 0: /* ok */
1.1 deraadt 898: return (0);
899: default:
900: *cp++ = resp;
901: /* FALLTHROUGH */
1.18 markus 902: case 1: /* error, followed by error msg */
903: case 2: /* fatal error, "" */
1.1 deraadt 904: do {
1.30 deraadt 905: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 906: lostconn(0);
907: *cp++ = ch;
908: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
909:
910: if (!iamremote)
1.29 deraadt 911: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 912: ++errs;
913: if (resp == 1)
914: return (-1);
915: exit(1);
916: }
917: /* NOTREACHED */
918: }
919:
920: void
921: usage()
922: {
1.83 ! stevesk 923: (void) fprintf(stderr,
! 924: "usage: scp [-pqrvBC46] [-F config] [-S ssh] [-P port] [-c cipher] [-i identity]\n"
! 925: " [-o option] f1 f2\n"
1.64 stevesk 926: " or: scp [options] f1 ... fn directory\n");
1.1 deraadt 927: exit(1);
928: }
929:
930: void
1.18 markus 931: run_err(const char *fmt,...)
1.1 deraadt 932: {
933: static FILE *fp;
934: va_list ap;
935:
936: ++errs;
937: if (fp == NULL && !(fp = fdopen(remout, "w")))
938: return;
1.18 markus 939: (void) fprintf(fp, "%c", 0x01);
940: (void) fprintf(fp, "scp: ");
1.73 markus 941: va_start(ap, fmt);
1.18 markus 942: (void) vfprintf(fp, fmt, ap);
1.73 markus 943: va_end(ap);
1.18 markus 944: (void) fprintf(fp, "\n");
945: (void) fflush(fp);
946:
947: if (!iamremote) {
1.73 markus 948: va_start(ap, fmt);
1.18 markus 949: vfprintf(stderr, fmt, ap);
1.73 markus 950: va_end(ap);
1.18 markus 951: fprintf(stderr, "\n");
952: }
1.1 deraadt 953: }
954:
955: void
956: verifydir(cp)
957: char *cp;
958: {
959: struct stat stb;
960:
961: if (!stat(cp, &stb)) {
962: if (S_ISDIR(stb.st_mode))
963: return;
964: errno = ENOTDIR;
965: }
966: run_err("%s: %s", cp, strerror(errno));
967: exit(1);
968: }
969:
970: int
971: okname(cp0)
972: char *cp0;
973: {
974: int c;
975: char *cp;
976:
977: cp = cp0;
978: do {
1.75 deraadt 979: c = (int)*cp;
1.1 deraadt 980: if (c & 0200)
981: goto bad;
1.46 markus 982: if (!isalpha(c) && !isdigit(c) &&
983: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 984: goto bad;
985: } while (*++cp);
986: return (1);
987:
1.25 markus 988: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 989: return (0);
990: }
991:
992: BUF *
993: allocbuf(bp, fd, blksize)
994: BUF *bp;
995: int fd, blksize;
996: {
997: size_t size;
998: struct stat stb;
999:
1000: if (fstat(fd, &stb) < 0) {
1001: run_err("fstat: %s", strerror(errno));
1002: return (0);
1003: }
1.18 markus 1004: if (stb.st_blksize == 0)
1005: size = blksize;
1006: else
1007: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1008: stb.st_blksize;
1.1 deraadt 1009: if (bp->cnt >= size)
1010: return (bp);
1.18 markus 1011: if (bp->buf == NULL)
1012: bp->buf = xmalloc(size);
1013: else
1014: bp->buf = xrealloc(bp->buf, size);
1.81 markus 1015: memset(bp->buf, 0, size);
1.1 deraadt 1016: bp->cnt = size;
1017: return (bp);
1018: }
1019:
1020: void
1021: lostconn(signo)
1022: int signo;
1023: {
1024: if (!iamremote)
1.74 markus 1025: write(STDERR_FILENO, "lost connection\n", 16);
1026: if (signo)
1027: _exit(1);
1028: else
1029: exit(1);
1.1 deraadt 1030: }
1.4 aaron 1031:
1.76 itojun 1032: static void
1.26 markus 1033: updateprogressmeter(int ignore)
1.4 aaron 1034: {
1.9 deraadt 1035: int save_errno = errno;
1036:
1.4 aaron 1037: progressmeter(0);
1.79 stevesk 1038: signal(SIGALRM, updateprogressmeter);
1039: alarm(PROGRESSTIME);
1.9 deraadt 1040: errno = save_errno;
1.4 aaron 1041: }
1042:
1.76 itojun 1043: static int
1.56 itojun 1044: foregroundproc(void)
1.16 deraadt 1045: {
1046: static pid_t pgrp = -1;
1047: int ctty_pgrp;
1048:
1049: if (pgrp == -1)
1050: pgrp = getpgrp();
1051:
1.18 markus 1052: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1053: ctty_pgrp == pgrp));
1.16 deraadt 1054: }
1055:
1.8 deraadt 1056: void
1057: progressmeter(int flag)
1.4 aaron 1058: {
1059: static const char prefixes[] = " KMGTP";
1060: static struct timeval lastupdate;
1.11 aaron 1061: static off_t lastsize;
1.4 aaron 1062: struct timeval now, td, wait;
1063: off_t cursize, abbrevsize;
1064: double elapsed;
1065: int ratio, barlength, i, remaining;
1066: char buf[256];
1067:
1068: if (flag == -1) {
1.18 markus 1069: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1070: lastupdate = start;
1.11 aaron 1071: lastsize = 0;
1.18 markus 1072: }
1.16 deraadt 1073: if (foregroundproc() == 0)
1074: return;
1075:
1.18 markus 1076: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1077: cursize = statbytes;
1.13 aaron 1078: if (totalbytes != 0) {
1.21 markus 1079: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1080: ratio = MAX(ratio, 0);
1081: ratio = MIN(ratio, 100);
1.18 markus 1082: } else
1.13 aaron 1083: ratio = 100;
1084:
1.18 markus 1085: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1086:
1.11 aaron 1087: barlength = getttywidth() - 51;
1.4 aaron 1088: if (barlength > 0) {
1089: i = barlength * ratio / 100;
1090: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1091: "|%.*s%*s|", i,
1.78 deraadt 1092: "***************************************"
1093: "***************************************"
1094: "***************************************"
1095: "***************************************",
1.35 deraadt 1096: barlength - i, "");
1.4 aaron 1097: }
1098: i = 0;
1099: abbrevsize = cursize;
1100: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1101: i++;
1102: abbrevsize >>= 10;
1103: }
1.54 itojun 1104: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1105: (unsigned long long) abbrevsize, prefixes[i],
1106: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1107:
1108: timersub(&now, &lastupdate, &wait);
1109: if (cursize > lastsize) {
1110: lastupdate = now;
1111: lastsize = cursize;
1112: if (wait.tv_sec >= STALLTIME) {
1113: start.tv_sec += wait.tv_sec;
1114: start.tv_usec += wait.tv_usec;
1115: }
1116: wait.tv_sec = 0;
1117: }
1118: timersub(&now, &start, &td);
1.6 aaron 1119: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1120:
1.44 deraadt 1121: if (flag != 1 &&
1122: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1123: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1124: " --:-- ETA");
1.4 aaron 1125: } else if (wait.tv_sec >= STALLTIME) {
1126: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1127: " - stalled -");
1.4 aaron 1128: } else {
1.28 deraadt 1129: if (flag != 1)
1.44 deraadt 1130: remaining = (int)(totalbytes / (statbytes / elapsed) -
1131: elapsed);
1.28 deraadt 1132: else
1133: remaining = elapsed;
1134:
1.14 aaron 1135: i = remaining / 3600;
1.4 aaron 1136: if (i)
1137: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1138: "%2d:", i);
1.4 aaron 1139: else
1140: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1141: " ");
1.4 aaron 1142: i = remaining % 3600;
1143: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1144: "%02d:%02d%s", i / 60, i % 60,
1145: (flag != 1) ? " ETA" : " ");
1.4 aaron 1146: }
1.10 deraadt 1147: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1148:
1149: if (flag == -1) {
1.26 markus 1150: signal(SIGALRM, updateprogressmeter);
1.79 stevesk 1151: alarm(PROGRESSTIME);
1.4 aaron 1152: } else if (flag == 1) {
1.79 stevesk 1153: alarm(0);
1.29 deraadt 1154: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1155: statbytes = 0;
1.4 aaron 1156: }
1157: }
1158:
1.8 deraadt 1159: int
1160: getttywidth(void)
1.4 aaron 1161: {
1162: struct winsize winsize;
1163:
1164: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1165: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1166: else
1.18 markus 1167: return (80);
1.4 aaron 1168: }
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