Annotation of src/usr.bin/ssh/scp.c, Revision 1.78
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"
1.78 ! deraadt 78: RCSID("$OpenBSD: scp.c,v 1.77 2001/07/18 16:45:52 mouring Exp $");
1.1 deraadt 79:
80: #include "xmalloc.h"
1.51 markus 81: #include "atomicio.h"
1.50 markus 82: #include "pathnames.h"
1.51 markus 83: #include "log.h"
1.69 mouring 84: #include "misc.h"
1.1 deraadt 85:
1.11 aaron 86: /* For progressmeter() -- number of seconds before xfer considered "stalled" */
1.4 aaron 87: #define STALLTIME 5
88:
1.11 aaron 89: /* Visual statistics about files as they are transferred. */
90: void progressmeter(int);
91:
92: /* Returns width of the terminal (for progress meter calculations). */
93: int getttywidth(void);
1.35 deraadt 94: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
1.11 aaron 95:
1.70 mouring 96: /* Struct for addargs */
97: arglist args;
1.41 markus 98:
1.11 aaron 99: /* Time a transfer started. */
1.4 aaron 100: static struct timeval start;
1.11 aaron 101:
102: /* Number of bytes of current file transferred so far. */
1.68 markus 103: volatile off_t statbytes;
1.11 aaron 104:
105: /* Total size of current file. */
1.15 markus 106: off_t totalbytes = 0;
1.11 aaron 107:
108: /* Name of current file being transferred. */
109: char *curfile;
1.4 aaron 110:
1.1 deraadt 111: /* This is set to non-zero to enable verbose mode. */
1.17 markus 112: int verbose_mode = 0;
1.1 deraadt 113:
1.6 aaron 114: /* This is set to zero if the progressmeter is not desired. */
115: int showprogress = 1;
116:
1.34 deraadt 117: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 118: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 119:
1.20 markus 120: /*
121: * This function executes the given command as the specified user on the
122: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
123: * assigns the input and output file descriptors on success.
124: */
1.1 deraadt 125:
1.27 markus 126: int
1.35 deraadt 127: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
1.1 deraadt 128: {
1.18 markus 129: int pin[2], pout[2], reserved[2];
130:
131: if (verbose_mode)
1.78 ! deraadt 132: fprintf(stderr,
! 133: "Executing: program %s host %s, user %s, command %s\n",
! 134: ssh_program, host,
! 135: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 136:
1.20 markus 137: /*
138: * Reserve two descriptors so that the real pipes won't get
139: * descriptors 0 and 1 because that will screw up dup2 below.
140: */
1.18 markus 141: pipe(reserved);
142:
143: /* Create a socket pair for communicating with ssh. */
144: if (pipe(pin) < 0)
145: fatal("pipe: %s", strerror(errno));
146: if (pipe(pout) < 0)
147: fatal("pipe: %s", strerror(errno));
148:
149: /* Free the reserved descriptors. */
150: close(reserved[0]);
151: close(reserved[1]);
152:
153: /* For a child to execute the command on the remote host using ssh. */
1.41 markus 154: if (fork() == 0) {
1.18 markus 155: /* Child. */
156: close(pin[1]);
157: close(pout[0]);
158: dup2(pin[0], 0);
159: dup2(pout[1], 1);
160: close(pin[0]);
161: close(pout[1]);
162:
1.41 markus 163: args.list[0] = ssh_program;
164: if (remuser != NULL)
1.70 mouring 165: addargs(&args, "-l%s", remuser);
166: addargs(&args, "%s", host);
167: addargs(&args, "%s", cmd);
1.18 markus 168:
1.41 markus 169: execvp(ssh_program, args.list);
1.34 deraadt 170: perror(ssh_program);
1.18 markus 171: exit(1);
172: }
173: /* Parent. Close the other side, and return the local side. */
174: close(pin[0]);
175: *fdout = pin[1];
176: close(pout[1]);
177: *fdin = pout[0];
178: return 0;
1.1 deraadt 179: }
180:
181: typedef struct {
182: int cnt;
183: char *buf;
184: } BUF;
185:
1.18 markus 186: BUF *allocbuf(BUF *, int, int);
187: void lostconn(int);
188: void nospace(void);
189: int okname(char *);
190: void run_err(const char *,...);
191: void verifydir(char *);
1.1 deraadt 192:
193: struct passwd *pwd;
1.18 markus 194: uid_t userid;
1.1 deraadt 195: int errs, remin, remout;
196: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
197:
198: #define CMDNEEDS 64
199: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
200:
1.76 itojun 201: int main(int, char *[]);
1.18 markus 202: int response(void);
203: void rsource(char *, struct stat *);
204: void sink(int, char *[]);
205: void source(int, char *[]);
206: void tolocal(int, char *[]);
207: void toremote(char *, int, char *[]);
208: void usage(void);
1.1 deraadt 209:
210: int
211: main(argc, argv)
212: int argc;
213: char *argv[];
214: {
215: int ch, fflag, tflag;
216: char *targ;
217: extern char *optarg;
218: extern int optind;
219:
1.41 markus 220: args.list = NULL;
1.70 mouring 221: addargs(&args, "ssh"); /* overwritten with ssh_program */
222: addargs(&args, "-x");
223: addargs(&args, "-oFallBackToRsh no");
1.41 markus 224:
1.1 deraadt 225: fflag = tflag = 0;
1.49 markus 226: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
1.18 markus 227: switch (ch) {
228: /* User-visible flags. */
1.23 markus 229: case '4':
1.41 markus 230: case '6':
231: case 'C':
1.70 mouring 232: addargs(&args, "-%c", ch);
1.41 markus 233: break;
234: case 'o':
235: case 'c':
236: case 'i':
1.70 mouring 237: addargs(&args, "-%c%s", ch, optarg);
1.23 markus 238: break;
1.41 markus 239: case 'P':
1.70 mouring 240: addargs(&args, "-p%s", optarg);
1.41 markus 241: break;
242: case 'B':
1.70 mouring 243: addargs(&args, "-oBatchmode yes");
1.23 markus 244: break;
1.1 deraadt 245: case 'p':
246: pflag = 1;
247: break;
248: case 'r':
249: iamrecursive = 1;
250: break;
1.34 deraadt 251: case 'S':
1.41 markus 252: ssh_program = xstrdup(optarg);
253: break;
254: case 'v':
1.72 markus 255: addargs(&args, "-v");
1.41 markus 256: verbose_mode = 1;
257: break;
258: case 'q':
259: showprogress = 0;
1.34 deraadt 260: break;
261:
1.18 markus 262: /* Server options. */
1.1 deraadt 263: case 'd':
264: targetshouldbedirectory = 1;
265: break;
1.18 markus 266: case 'f': /* "from" */
1.1 deraadt 267: iamremote = 1;
268: fflag = 1;
269: break;
1.18 markus 270: case 't': /* "to" */
1.1 deraadt 271: iamremote = 1;
272: tflag = 1;
273: break;
274: default:
275: usage();
276: }
277: argc -= optind;
278: argv += optind;
279:
280: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 281: fatal("unknown user %d", (int) userid);
1.1 deraadt 282:
1.18 markus 283: if (!isatty(STDERR_FILENO))
1.7 deraadt 284: showprogress = 0;
285:
1.1 deraadt 286: remin = STDIN_FILENO;
287: remout = STDOUT_FILENO;
288:
1.52 stevesk 289: if (fflag) {
1.18 markus 290: /* Follow "protocol", send data. */
291: (void) response();
1.1 deraadt 292: source(argc, argv);
293: exit(errs != 0);
294: }
1.18 markus 295: if (tflag) {
296: /* Receive data. */
1.1 deraadt 297: sink(argc, argv);
298: exit(errs != 0);
299: }
300: if (argc < 2)
301: usage();
302: if (argc > 2)
303: targetshouldbedirectory = 1;
304:
305: remin = remout = -1;
306: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 307: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
308: verbose_mode ? " -v" : "",
1.35 deraadt 309: iamrecursive ? " -r" : "", pflag ? " -p" : "",
310: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 311:
1.18 markus 312: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 313:
314: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
315: toremote(targ, argc, argv);
316: else {
1.18 markus 317: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 318: if (targetshouldbedirectory)
319: verifydir(argv[argc - 1]);
320: }
321: exit(errs != 0);
322: }
323:
324: void
325: toremote(targ, argc, argv)
326: char *targ, *argv[];
327: int argc;
328: {
329: int i, len;
330: char *bp, *host, *src, *suser, *thost, *tuser;
331:
332: *targ++ = 0;
333: if (*targ == 0)
334: targ = ".";
335:
336: if ((thost = strchr(argv[argc - 1], '@'))) {
337: /* user@host */
338: *thost++ = 0;
339: tuser = argv[argc - 1];
340: if (*tuser == '\0')
341: tuser = NULL;
342: else if (!okname(tuser))
343: exit(1);
344: } else {
345: thost = argv[argc - 1];
346: tuser = NULL;
347: }
348:
349: for (i = 0; i < argc - 1; i++) {
350: src = colon(argv[i]);
1.18 markus 351: if (src) { /* remote to remote */
1.1 deraadt 352: *src++ = 0;
353: if (*src == 0)
354: src = ".";
355: host = strchr(argv[i], '@');
1.34 deraadt 356: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 357: strlen(src) + (tuser ? strlen(tuser) : 0) +
358: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 359: bp = xmalloc(len);
1.1 deraadt 360: if (host) {
361: *host++ = 0;
1.23 markus 362: host = cleanhostname(host);
1.1 deraadt 363: suser = argv[i];
364: if (*suser == '\0')
365: suser = pwd->pw_name;
366: else if (!okname(suser))
367: continue;
1.55 deraadt 368: snprintf(bp, len,
369: "%s%s -x -o'FallBackToRsh no' -n "
370: "-l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 371: ssh_program, verbose_mode ? " -v" : "",
372: suser, host, cmd, src,
373: tuser ? tuser : "", tuser ? "@" : "",
374: thost, targ);
1.23 markus 375: } else {
376: host = cleanhostname(argv[i]);
1.55 deraadt 377: snprintf(bp, len,
378: "exec %s%s -x -o'FallBackToRsh no' -n %s "
379: "%s %s '%s%s%s:%s'",
1.44 deraadt 380: ssh_program, verbose_mode ? " -v" : "",
381: host, cmd, src,
382: tuser ? tuser : "", tuser ? "@" : "",
383: thost, targ);
1.23 markus 384: }
1.18 markus 385: if (verbose_mode)
386: fprintf(stderr, "Executing: %s\n", bp);
387: (void) system(bp);
388: (void) xfree(bp);
389: } else { /* local to remote */
1.1 deraadt 390: if (remin == -1) {
391: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 392: bp = xmalloc(len);
1.55 deraadt 393: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 394: host = cleanhostname(thost);
1.35 deraadt 395: if (do_cmd(host, tuser, bp, &remin,
396: &remout, argc) < 0)
1.18 markus 397: exit(1);
1.1 deraadt 398: if (response() < 0)
399: exit(1);
1.18 markus 400: (void) xfree(bp);
1.1 deraadt 401: }
1.18 markus 402: source(1, argv + i);
1.1 deraadt 403: }
404: }
405: }
406:
407: void
408: tolocal(argc, argv)
409: int argc;
410: char *argv[];
411: {
412: int i, len;
413: char *bp, *host, *src, *suser;
414:
415: for (i = 0; i < argc - 1; i++) {
1.18 markus 416: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 417: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 418: strlen(argv[argc - 1]) + 20;
1.1 deraadt 419: bp = xmalloc(len);
1.55 deraadt 420: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 421: iamrecursive ? " -r" : "", pflag ? " -p" : "",
422: argv[i], argv[argc - 1]);
1.18 markus 423: if (verbose_mode)
424: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 425: if (system(bp))
426: ++errs;
1.18 markus 427: (void) xfree(bp);
1.1 deraadt 428: continue;
429: }
430: *src++ = 0;
431: if (*src == 0)
432: src = ".";
433: if ((host = strchr(argv[i], '@')) == NULL) {
434: host = argv[i];
435: suser = NULL;
436: } else {
437: *host++ = 0;
438: suser = argv[i];
439: if (*suser == '\0')
440: suser = pwd->pw_name;
441: else if (!okname(suser))
442: continue;
443: }
1.23 markus 444: host = cleanhostname(host);
1.1 deraadt 445: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 446: bp = xmalloc(len);
1.55 deraadt 447: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 448: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 449: (void) xfree(bp);
450: ++errs;
451: continue;
1.1 deraadt 452: }
1.18 markus 453: xfree(bp);
1.1 deraadt 454: sink(1, argv + argc - 1);
1.18 markus 455: (void) close(remin);
1.1 deraadt 456: remin = remout = -1;
457: }
458: }
459:
460: void
461: source(argc, argv)
462: int argc;
463: char *argv[];
464: {
465: struct stat stb;
466: static BUF buffer;
467: BUF *bp;
1.68 markus 468: off_t i, amt, result;
469: int fd, haderr, indx;
1.1 deraadt 470: char *last, *name, buf[2048];
1.65 deraadt 471: int len;
1.1 deraadt 472:
473: for (indx = 0; indx < argc; ++indx) {
1.18 markus 474: name = argv[indx];
1.11 aaron 475: statbytes = 0;
1.65 deraadt 476: len = strlen(name);
477: while (len > 1 && name[len-1] == '/')
478: name[--len] = '\0';
1.1 deraadt 479: if ((fd = open(name, O_RDONLY, 0)) < 0)
480: goto syserr;
481: if (fstat(fd, &stb) < 0) {
482: syserr: run_err("%s: %s", name, strerror(errno));
483: goto next;
484: }
485: switch (stb.st_mode & S_IFMT) {
486: case S_IFREG:
487: break;
488: case S_IFDIR:
489: if (iamrecursive) {
490: rsource(name, &stb);
491: goto next;
492: }
493: /* FALLTHROUGH */
494: default:
495: run_err("%s: not a regular file", name);
496: goto next;
497: }
498: if ((last = strrchr(name, '/')) == NULL)
499: last = name;
500: else
501: ++last;
1.11 aaron 502: curfile = last;
1.1 deraadt 503: if (pflag) {
504: /*
505: * Make it compatible with possible future
506: * versions expecting microseconds.
507: */
1.55 deraadt 508: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 509: (u_long) stb.st_mtime,
510: (u_long) stb.st_atime);
1.29 deraadt 511: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 512: if (response() < 0)
513: goto next;
514: }
515: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 516: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 517: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 518: (long long)stb.st_size, last);
1.18 markus 519: if (verbose_mode) {
520: fprintf(stderr, "Sending file modes: %s", buf);
521: fflush(stderr);
522: }
1.29 deraadt 523: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 524: if (response() < 0)
525: goto next;
526: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 527: next: (void) close(fd);
1.1 deraadt 528: continue;
529: }
1.12 aaron 530: if (showprogress) {
531: totalbytes = stb.st_size;
1.6 aaron 532: progressmeter(-1);
1.12 aaron 533: }
1.1 deraadt 534: /* Keep writing after an error so that we stay sync'd up. */
535: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
536: amt = bp->cnt;
537: if (i + amt > stb.st_size)
538: amt = stb.st_size - i;
539: if (!haderr) {
1.30 deraadt 540: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 541: if (result != amt)
542: haderr = result >= 0 ? EIO : errno;
543: }
544: if (haderr)
1.29 deraadt 545: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 546: else {
1.29 deraadt 547: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 548: if (result != amt)
549: haderr = result >= 0 ? EIO : errno;
1.4 aaron 550: statbytes += result;
1.1 deraadt 551: }
552: }
1.18 markus 553: if (showprogress)
1.6 aaron 554: progressmeter(1);
1.4 aaron 555:
1.1 deraadt 556: if (close(fd) < 0 && !haderr)
557: haderr = errno;
558: if (!haderr)
1.29 deraadt 559: (void) atomicio(write, remout, "", 1);
1.1 deraadt 560: else
561: run_err("%s: %s", name, strerror(haderr));
1.18 markus 562: (void) response();
1.1 deraadt 563: }
564: }
565:
566: void
567: rsource(name, statp)
568: char *name;
569: struct stat *statp;
570: {
571: DIR *dirp;
572: struct dirent *dp;
573: char *last, *vect[1], path[1100];
574:
575: if (!(dirp = opendir(name))) {
576: run_err("%s: %s", name, strerror(errno));
577: return;
578: }
579: last = strrchr(name, '/');
580: if (last == 0)
581: last = name;
582: else
583: last++;
584: if (pflag) {
1.55 deraadt 585: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 586: (u_long) statp->st_mtime,
587: (u_long) statp->st_atime);
1.29 deraadt 588: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 589: if (response() < 0) {
590: closedir(dirp);
591: return;
592: }
593: }
1.55 deraadt 594: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 595: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 596: if (verbose_mode)
597: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 598: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 599: if (response() < 0) {
600: closedir(dirp);
601: return;
602: }
1.63 stevesk 603: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 604: if (dp->d_ino == 0)
605: continue;
606: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
607: continue;
608: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
609: run_err("%s/%s: name too long", name, dp->d_name);
610: continue;
611: }
1.55 deraadt 612: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 613: vect[0] = path;
614: source(1, vect);
615: }
1.18 markus 616: (void) closedir(dirp);
1.29 deraadt 617: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 618: (void) response();
1.1 deraadt 619: }
620:
621: void
622: sink(argc, argv)
623: int argc;
624: char *argv[];
625: {
626: static BUF buffer;
627: struct stat stb;
1.18 markus 628: enum {
629: YES, NO, DISPLAYED
630: } wrerr;
1.1 deraadt 631: BUF *bp;
632: off_t i, j;
633: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 634: off_t size;
635: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 636: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 637: struct timeval tv[2];
1.1 deraadt 638:
1.66 stevesk 639: #define atime tv[0]
640: #define mtime tv[1]
1.75 deraadt 641: #define SCREWUP(str) do { why = str; goto screwup; } while (0)
1.1 deraadt 642:
643: setimes = targisdir = 0;
644: mask = umask(0);
645: if (!pflag)
1.18 markus 646: (void) umask(mask);
1.1 deraadt 647: if (argc != 1) {
648: run_err("ambiguous target");
649: exit(1);
650: }
651: targ = *argv;
652: if (targetshouldbedirectory)
653: verifydir(targ);
1.18 markus 654:
1.29 deraadt 655: (void) atomicio(write, remout, "", 1);
1.1 deraadt 656: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
657: targisdir = 1;
658: for (first = 1;; first = 0) {
659: cp = buf;
1.30 deraadt 660: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 661: return;
662: if (*cp++ == '\n')
663: SCREWUP("unexpected <newline>");
664: do {
1.30 deraadt 665: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 666: SCREWUP("lost connection");
667: *cp++ = ch;
668: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
669: *cp = 0;
670:
671: if (buf[0] == '\01' || buf[0] == '\02') {
672: if (iamremote == 0)
1.29 deraadt 673: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 674: buf + 1, strlen(buf + 1));
1.1 deraadt 675: if (buf[0] == '\02')
676: exit(1);
677: ++errs;
678: continue;
679: }
680: if (buf[0] == 'E') {
1.29 deraadt 681: (void) atomicio(write, remout, "", 1);
1.1 deraadt 682: return;
683: }
684: if (ch == '\n')
685: *--cp = 0;
686:
687: cp = buf;
688: if (*cp == 'T') {
689: setimes++;
690: cp++;
1.66 stevesk 691: mtime.tv_sec = strtol(cp, &cp, 10);
692: if (!cp || *cp++ != ' ')
1.1 deraadt 693: SCREWUP("mtime.sec not delimited");
1.66 stevesk 694: mtime.tv_usec = strtol(cp, &cp, 10);
695: if (!cp || *cp++ != ' ')
1.1 deraadt 696: SCREWUP("mtime.usec not delimited");
1.66 stevesk 697: atime.tv_sec = strtol(cp, &cp, 10);
698: if (!cp || *cp++ != ' ')
1.1 deraadt 699: SCREWUP("atime.sec not delimited");
1.66 stevesk 700: atime.tv_usec = strtol(cp, &cp, 10);
701: if (!cp || *cp++ != '\0')
1.1 deraadt 702: SCREWUP("atime.usec not delimited");
1.29 deraadt 703: (void) atomicio(write, remout, "", 1);
1.1 deraadt 704: continue;
705: }
706: if (*cp != 'C' && *cp != 'D') {
707: /*
708: * Check for the case "rcp remote:foo\* local:bar".
709: * In this case, the line "No match." can be returned
710: * by the shell before the rcp command on the remote is
711: * executed so the ^Aerror_message convention isn't
712: * followed.
713: */
714: if (first) {
715: run_err("%s", cp);
716: exit(1);
717: }
718: SCREWUP("expected control record");
719: }
720: mode = 0;
721: for (++cp; cp < buf + 5; cp++) {
722: if (*cp < '0' || *cp > '7')
723: SCREWUP("bad mode");
724: mode = (mode << 3) | (*cp - '0');
725: }
726: if (*cp++ != ' ')
727: SCREWUP("mode not delimited");
728:
1.63 stevesk 729: for (size = 0; isdigit(*cp);)
1.1 deraadt 730: size = size * 10 + (*cp++ - '0');
731: if (*cp++ != ' ')
732: SCREWUP("size not delimited");
733: if (targisdir) {
734: static char *namebuf;
735: static int cursize;
736: size_t need;
737:
738: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 739: if (need > cursize) {
1.58 danh 740: if (namebuf)
741: xfree(namebuf);
1.18 markus 742: namebuf = xmalloc(need);
1.55 deraadt 743: cursize = need;
744: }
745: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.35 deraadt 746: *targ ? "/" : "", cp);
1.1 deraadt 747: np = namebuf;
748: } else
749: np = targ;
1.12 aaron 750: curfile = cp;
1.1 deraadt 751: exists = stat(np, &stb) == 0;
752: if (buf[0] == 'D') {
753: int mod_flag = pflag;
754: if (exists) {
755: if (!S_ISDIR(stb.st_mode)) {
756: errno = ENOTDIR;
757: goto bad;
758: }
759: if (pflag)
1.18 markus 760: (void) chmod(np, mode);
1.1 deraadt 761: } else {
1.18 markus 762: /* Handle copying from a read-only
763: directory */
1.1 deraadt 764: mod_flag = 1;
765: if (mkdir(np, mode | S_IRWXU) < 0)
766: goto bad;
767: }
1.58 danh 768: vect[0] = xstrdup(np);
1.1 deraadt 769: sink(1, vect);
770: if (setimes) {
771: setimes = 0;
1.59 deraadt 772: if (utimes(vect[0], tv) < 0)
1.18 markus 773: run_err("%s: set times: %s",
1.59 deraadt 774: vect[0], strerror(errno));
1.1 deraadt 775: }
776: if (mod_flag)
1.59 deraadt 777: (void) chmod(vect[0], mode);
778: if (vect[0])
779: xfree(vect[0]);
1.1 deraadt 780: continue;
781: }
782: omode = mode;
783: mode |= S_IWRITE;
1.71 markus 784: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 785: bad: run_err("%s: %s", np, strerror(errno));
786: continue;
787: }
1.29 deraadt 788: (void) atomicio(write, remout, "", 1);
1.1 deraadt 789: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 790: (void) close(ofd);
1.1 deraadt 791: continue;
792: }
793: cp = bp->buf;
794: wrerr = NO;
1.7 deraadt 795:
796: if (showprogress) {
797: totalbytes = size;
798: progressmeter(-1);
799: }
1.12 aaron 800: statbytes = 0;
1.1 deraadt 801: for (count = i = 0; i < size; i += 4096) {
802: amt = 4096;
803: if (i + amt > size)
804: amt = size - i;
805: count += amt;
806: do {
1.43 markus 807: j = read(remin, cp, amt);
1.78 ! deraadt 808: if (j == -1 && (errno == EINTR ||
! 809: errno == EAGAIN)) {
1.43 markus 810: continue;
811: } else if (j <= 0) {
1.1 deraadt 812: run_err("%s", j ? strerror(errno) :
1.63 stevesk 813: "dropped connection");
1.1 deraadt 814: exit(1);
815: }
816: amt -= j;
817: cp += j;
1.18 markus 818: statbytes += j;
1.1 deraadt 819: } while (amt > 0);
820: if (count == bp->cnt) {
821: /* Keep reading so we stay sync'd up. */
822: if (wrerr == NO) {
1.30 deraadt 823: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 824: if (j != count) {
825: wrerr = YES;
1.18 markus 826: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 827: }
828: }
829: count = 0;
830: cp = bp->buf;
831: }
832: }
1.7 deraadt 833: if (showprogress)
834: progressmeter(1);
1.1 deraadt 835: if (count != 0 && wrerr == NO &&
1.30 deraadt 836: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 837: wrerr = YES;
1.18 markus 838: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 839: }
840: if (ftruncate(ofd, size)) {
841: run_err("%s: truncate: %s", np, strerror(errno));
842: wrerr = DISPLAYED;
843: }
844: if (pflag) {
845: if (exists || omode != mode)
846: if (fchmod(ofd, omode))
847: run_err("%s: set mode: %s",
1.63 stevesk 848: np, strerror(errno));
1.1 deraadt 849: } else {
850: if (!exists && omode != mode)
851: if (fchmod(ofd, omode & ~mask))
852: run_err("%s: set mode: %s",
1.63 stevesk 853: np, strerror(errno));
1.1 deraadt 854: }
1.33 provos 855: if (close(ofd) == -1) {
856: wrerr = YES;
857: wrerrno = errno;
858: }
1.18 markus 859: (void) response();
1.1 deraadt 860: if (setimes && wrerr == NO) {
861: setimes = 0;
1.40 markus 862: if (utimes(np, tv) < 0) {
1.1 deraadt 863: run_err("%s: set times: %s",
1.63 stevesk 864: np, strerror(errno));
1.1 deraadt 865: wrerr = DISPLAYED;
866: }
867: }
1.18 markus 868: switch (wrerr) {
1.1 deraadt 869: case YES:
870: run_err("%s: %s", np, strerror(wrerrno));
871: break;
872: case NO:
1.29 deraadt 873: (void) atomicio(write, remout, "", 1);
1.1 deraadt 874: break;
875: case DISPLAYED:
876: break;
877: }
878: }
879: screwup:
880: run_err("protocol error: %s", why);
881: exit(1);
882: }
883:
884: int
885: response()
886: {
887: char ch, *cp, resp, rbuf[2048];
888:
1.30 deraadt 889: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 890: lostconn(0);
891:
892: cp = rbuf;
1.18 markus 893: switch (resp) {
894: case 0: /* ok */
1.1 deraadt 895: return (0);
896: default:
897: *cp++ = resp;
898: /* FALLTHROUGH */
1.18 markus 899: case 1: /* error, followed by error msg */
900: case 2: /* fatal error, "" */
1.1 deraadt 901: do {
1.30 deraadt 902: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 903: lostconn(0);
904: *cp++ = ch;
905: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
906:
907: if (!iamremote)
1.29 deraadt 908: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 909: ++errs;
910: if (resp == 1)
911: return (-1);
912: exit(1);
913: }
914: /* NOTREACHED */
915: }
916:
917: void
918: usage()
919: {
1.34 deraadt 920: (void) fprintf(stderr, "usage: scp "
1.77 mouring 921: "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] "
922: "[-o option] f1 f2\n"
1.64 stevesk 923: " or: scp [options] f1 ... fn directory\n");
1.1 deraadt 924: exit(1);
925: }
926:
927: void
1.18 markus 928: run_err(const char *fmt,...)
1.1 deraadt 929: {
930: static FILE *fp;
931: va_list ap;
932:
933: ++errs;
934: if (fp == NULL && !(fp = fdopen(remout, "w")))
935: return;
1.18 markus 936: (void) fprintf(fp, "%c", 0x01);
937: (void) fprintf(fp, "scp: ");
1.73 markus 938: va_start(ap, fmt);
1.18 markus 939: (void) vfprintf(fp, fmt, ap);
1.73 markus 940: va_end(ap);
1.18 markus 941: (void) fprintf(fp, "\n");
942: (void) fflush(fp);
943:
944: if (!iamremote) {
1.73 markus 945: va_start(ap, fmt);
1.18 markus 946: vfprintf(stderr, fmt, ap);
1.73 markus 947: va_end(ap);
1.18 markus 948: fprintf(stderr, "\n");
949: }
1.1 deraadt 950: }
951:
952: void
953: verifydir(cp)
954: char *cp;
955: {
956: struct stat stb;
957:
958: if (!stat(cp, &stb)) {
959: if (S_ISDIR(stb.st_mode))
960: return;
961: errno = ENOTDIR;
962: }
963: run_err("%s: %s", cp, strerror(errno));
964: exit(1);
965: }
966:
967: int
968: okname(cp0)
969: char *cp0;
970: {
971: int c;
972: char *cp;
973:
974: cp = cp0;
975: do {
1.75 deraadt 976: c = (int)*cp;
1.1 deraadt 977: if (c & 0200)
978: goto bad;
1.46 markus 979: if (!isalpha(c) && !isdigit(c) &&
980: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 981: goto bad;
982: } while (*++cp);
983: return (1);
984:
1.25 markus 985: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 986: return (0);
987: }
988:
989: BUF *
990: allocbuf(bp, fd, blksize)
991: BUF *bp;
992: int fd, blksize;
993: {
994: size_t size;
995: struct stat stb;
996:
997: if (fstat(fd, &stb) < 0) {
998: run_err("fstat: %s", strerror(errno));
999: return (0);
1000: }
1.18 markus 1001: if (stb.st_blksize == 0)
1002: size = blksize;
1003: else
1004: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1005: stb.st_blksize;
1.1 deraadt 1006: if (bp->cnt >= size)
1007: return (bp);
1.18 markus 1008: if (bp->buf == NULL)
1009: bp->buf = xmalloc(size);
1010: else
1011: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1012: bp->cnt = size;
1013: return (bp);
1014: }
1015:
1016: void
1017: lostconn(signo)
1018: int signo;
1019: {
1020: if (!iamremote)
1.74 markus 1021: write(STDERR_FILENO, "lost connection\n", 16);
1022: if (signo)
1023: _exit(1);
1024: else
1025: exit(1);
1.1 deraadt 1026: }
1.4 aaron 1027:
1.10 deraadt 1028:
1.76 itojun 1029: static void
1.8 deraadt 1030: alarmtimer(int wait)
1.4 aaron 1031: {
1.18 markus 1032: struct itimerval itv;
1.4 aaron 1033:
1.18 markus 1034: itv.it_value.tv_sec = wait;
1035: itv.it_value.tv_usec = 0;
1036: itv.it_interval = itv.it_value;
1037: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1038: }
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);
1.9 deraadt 1046: errno = save_errno;
1.4 aaron 1047: }
1048:
1.76 itojun 1049: static int
1.56 itojun 1050: foregroundproc(void)
1.16 deraadt 1051: {
1052: static pid_t pgrp = -1;
1053: int ctty_pgrp;
1054:
1055: if (pgrp == -1)
1056: pgrp = getpgrp();
1057:
1.18 markus 1058: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1059: ctty_pgrp == pgrp));
1.16 deraadt 1060: }
1061:
1.8 deraadt 1062: void
1063: progressmeter(int flag)
1.4 aaron 1064: {
1065: static const char prefixes[] = " KMGTP";
1066: static struct timeval lastupdate;
1.11 aaron 1067: static off_t lastsize;
1.4 aaron 1068: struct timeval now, td, wait;
1069: off_t cursize, abbrevsize;
1070: double elapsed;
1071: int ratio, barlength, i, remaining;
1072: char buf[256];
1073:
1074: if (flag == -1) {
1.18 markus 1075: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1076: lastupdate = start;
1.11 aaron 1077: lastsize = 0;
1.18 markus 1078: }
1.16 deraadt 1079: if (foregroundproc() == 0)
1080: return;
1081:
1.18 markus 1082: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1083: cursize = statbytes;
1.13 aaron 1084: if (totalbytes != 0) {
1.21 markus 1085: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1086: ratio = MAX(ratio, 0);
1087: ratio = MIN(ratio, 100);
1.18 markus 1088: } else
1.13 aaron 1089: ratio = 100;
1090:
1.18 markus 1091: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1092:
1.11 aaron 1093: barlength = getttywidth() - 51;
1.4 aaron 1094: if (barlength > 0) {
1095: i = barlength * ratio / 100;
1096: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1097: "|%.*s%*s|", i,
1.78 ! deraadt 1098: "***************************************"
! 1099: "***************************************"
! 1100: "***************************************"
! 1101: "***************************************",
1.35 deraadt 1102: barlength - i, "");
1.4 aaron 1103: }
1104: i = 0;
1105: abbrevsize = cursize;
1106: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1107: i++;
1108: abbrevsize >>= 10;
1109: }
1.54 itojun 1110: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1111: (unsigned long long) abbrevsize, prefixes[i],
1112: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1113:
1114: timersub(&now, &lastupdate, &wait);
1115: if (cursize > lastsize) {
1116: lastupdate = now;
1117: lastsize = cursize;
1118: if (wait.tv_sec >= STALLTIME) {
1119: start.tv_sec += wait.tv_sec;
1120: start.tv_usec += wait.tv_usec;
1121: }
1122: wait.tv_sec = 0;
1123: }
1124: timersub(&now, &start, &td);
1.6 aaron 1125: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1126:
1.44 deraadt 1127: if (flag != 1 &&
1128: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1129: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1130: " --:-- ETA");
1.4 aaron 1131: } else if (wait.tv_sec >= STALLTIME) {
1132: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1133: " - stalled -");
1.4 aaron 1134: } else {
1.28 deraadt 1135: if (flag != 1)
1.44 deraadt 1136: remaining = (int)(totalbytes / (statbytes / elapsed) -
1137: elapsed);
1.28 deraadt 1138: else
1139: remaining = elapsed;
1140:
1.14 aaron 1141: i = remaining / 3600;
1.4 aaron 1142: if (i)
1143: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1144: "%2d:", i);
1.4 aaron 1145: else
1146: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1147: " ");
1.4 aaron 1148: i = remaining % 3600;
1149: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1150: "%02d:%02d%s", i / 60, i % 60,
1151: (flag != 1) ? " ETA" : " ");
1.4 aaron 1152: }
1.10 deraadt 1153: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1154:
1155: if (flag == -1) {
1.26 markus 1156: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1157: alarmtimer(1);
1158: } else if (flag == 1) {
1.10 deraadt 1159: alarmtimer(0);
1.29 deraadt 1160: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1161: statbytes = 0;
1.4 aaron 1162: }
1163: }
1164:
1.8 deraadt 1165: int
1166: getttywidth(void)
1.4 aaron 1167: {
1168: struct winsize winsize;
1169:
1170: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1171: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1172: else
1.18 markus 1173: return (80);
1.4 aaron 1174: }
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