Annotation of src/usr.bin/ssh/scp.c, Revision 1.72
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"
1.72 ! markus 78: RCSID("$OpenBSD: scp.c,v 1.71 2001/05/19 16:05:41 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
88:
1.11 aaron 89: /* Visual statistics about files as they are transferred. */
90: void progressmeter(int);
91:
92: /* Returns width of the terminal (for progress meter calculations). */
93: int getttywidth(void);
1.35 deraadt 94: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
1.11 aaron 95:
1.70 mouring 96: /* Struct for addargs */
97: arglist args;
1.41 markus 98:
1.11 aaron 99: /* Time a transfer started. */
1.4 aaron 100: static struct timeval start;
1.11 aaron 101:
102: /* Number of bytes of current file transferred so far. */
1.68 markus 103: volatile off_t statbytes;
1.11 aaron 104:
105: /* Total size of current file. */
1.15 markus 106: off_t totalbytes = 0;
1.11 aaron 107:
108: /* Name of current file being transferred. */
109: char *curfile;
1.4 aaron 110:
1.1 deraadt 111: /* This is set to non-zero to enable verbose mode. */
1.17 markus 112: int verbose_mode = 0;
1.1 deraadt 113:
1.6 aaron 114: /* This is set to zero if the progressmeter is not desired. */
115: int showprogress = 1;
116:
1.34 deraadt 117: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 118: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 119:
1.20 markus 120: /*
121: * This function executes the given command as the specified user on the
122: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
123: * assigns the input and output file descriptors on success.
124: */
1.1 deraadt 125:
1.27 markus 126: int
1.35 deraadt 127: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
1.1 deraadt 128: {
1.18 markus 129: int pin[2], pout[2], reserved[2];
130:
131: if (verbose_mode)
1.41 markus 132: fprintf(stderr, "Executing: program %s host %s, user %s, command %s\n",
133: ssh_program, host, remuser ? remuser : "(unspecified)", cmd);
1.18 markus 134:
1.20 markus 135: /*
136: * Reserve two descriptors so that the real pipes won't get
137: * descriptors 0 and 1 because that will screw up dup2 below.
138: */
1.18 markus 139: pipe(reserved);
140:
141: /* Create a socket pair for communicating with ssh. */
142: if (pipe(pin) < 0)
143: fatal("pipe: %s", strerror(errno));
144: if (pipe(pout) < 0)
145: fatal("pipe: %s", strerror(errno));
146:
147: /* Free the reserved descriptors. */
148: close(reserved[0]);
149: close(reserved[1]);
150:
151: /* For a child to execute the command on the remote host using ssh. */
1.41 markus 152: if (fork() == 0) {
1.18 markus 153: /* Child. */
154: close(pin[1]);
155: close(pout[0]);
156: dup2(pin[0], 0);
157: dup2(pout[1], 1);
158: close(pin[0]);
159: close(pout[1]);
160:
1.41 markus 161: args.list[0] = ssh_program;
162: if (remuser != NULL)
1.70 mouring 163: addargs(&args, "-l%s", remuser);
164: addargs(&args, "%s", host);
165: addargs(&args, "%s", cmd);
1.18 markus 166:
1.41 markus 167: execvp(ssh_program, args.list);
1.34 deraadt 168: perror(ssh_program);
1.18 markus 169: exit(1);
170: }
171: /* Parent. Close the other side, and return the local side. */
172: close(pin[0]);
173: *fdout = pin[1];
174: close(pout[1]);
175: *fdin = pout[0];
176: return 0;
1.1 deraadt 177: }
178:
179: typedef struct {
180: int cnt;
181: char *buf;
182: } BUF;
183:
1.18 markus 184: BUF *allocbuf(BUF *, int, int);
185: void lostconn(int);
186: void nospace(void);
187: int okname(char *);
188: void run_err(const char *,...);
189: void verifydir(char *);
1.1 deraadt 190:
191: struct passwd *pwd;
1.18 markus 192: uid_t userid;
1.1 deraadt 193: int errs, remin, remout;
194: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
195:
196: #define CMDNEEDS 64
197: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
198:
1.18 markus 199: int response(void);
200: void rsource(char *, struct stat *);
201: void sink(int, char *[]);
202: void source(int, char *[]);
203: void tolocal(int, char *[]);
204: void toremote(char *, int, char *[]);
205: void usage(void);
1.1 deraadt 206:
207: int
208: main(argc, argv)
209: int argc;
210: char *argv[];
211: {
212: int ch, fflag, tflag;
213: char *targ;
214: extern char *optarg;
215: extern int optind;
216:
1.41 markus 217: args.list = NULL;
1.70 mouring 218: addargs(&args, "ssh"); /* overwritten with ssh_program */
219: addargs(&args, "-x");
220: addargs(&args, "-oFallBackToRsh no");
1.41 markus 221:
1.1 deraadt 222: fflag = tflag = 0;
1.49 markus 223: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
1.18 markus 224: switch (ch) {
225: /* User-visible flags. */
1.23 markus 226: case '4':
1.41 markus 227: case '6':
228: case 'C':
1.70 mouring 229: addargs(&args, "-%c", ch);
1.41 markus 230: break;
231: case 'o':
232: case 'c':
233: case 'i':
1.70 mouring 234: addargs(&args, "-%c%s", ch, optarg);
1.23 markus 235: break;
1.41 markus 236: case 'P':
1.70 mouring 237: addargs(&args, "-p%s", optarg);
1.41 markus 238: break;
239: case 'B':
1.70 mouring 240: addargs(&args, "-oBatchmode yes");
1.23 markus 241: break;
1.1 deraadt 242: case 'p':
243: pflag = 1;
244: break;
245: case 'r':
246: iamrecursive = 1;
247: break;
1.34 deraadt 248: case 'S':
1.41 markus 249: ssh_program = xstrdup(optarg);
250: break;
251: case 'v':
1.72 ! markus 252: addargs(&args, "-v");
1.41 markus 253: verbose_mode = 1;
254: break;
255: case 'q':
256: showprogress = 0;
1.34 deraadt 257: break;
258:
1.18 markus 259: /* Server options. */
1.1 deraadt 260: case 'd':
261: targetshouldbedirectory = 1;
262: break;
1.18 markus 263: case 'f': /* "from" */
1.1 deraadt 264: iamremote = 1;
265: fflag = 1;
266: break;
1.18 markus 267: case 't': /* "to" */
1.1 deraadt 268: iamremote = 1;
269: tflag = 1;
270: break;
271: default:
272: usage();
273: }
274: argc -= optind;
275: argv += optind;
276:
277: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 278: fatal("unknown user %d", (int) userid);
1.1 deraadt 279:
1.18 markus 280: if (!isatty(STDERR_FILENO))
1.7 deraadt 281: showprogress = 0;
282:
1.1 deraadt 283: remin = STDIN_FILENO;
284: remout = STDOUT_FILENO;
285:
1.52 stevesk 286: if (fflag) {
1.18 markus 287: /* Follow "protocol", send data. */
288: (void) response();
1.1 deraadt 289: source(argc, argv);
290: exit(errs != 0);
291: }
1.18 markus 292: if (tflag) {
293: /* Receive data. */
1.1 deraadt 294: sink(argc, argv);
295: exit(errs != 0);
296: }
297: if (argc < 2)
298: usage();
299: if (argc > 2)
300: targetshouldbedirectory = 1;
301:
302: remin = remout = -1;
303: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 304: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
305: verbose_mode ? " -v" : "",
1.35 deraadt 306: iamrecursive ? " -r" : "", pflag ? " -p" : "",
307: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 308:
1.18 markus 309: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 310:
311: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
312: toremote(targ, argc, argv);
313: else {
1.18 markus 314: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 315: if (targetshouldbedirectory)
316: verifydir(argv[argc - 1]);
317: }
318: exit(errs != 0);
319: }
320:
321: void
322: toremote(targ, argc, argv)
323: char *targ, *argv[];
324: int argc;
325: {
326: int i, len;
327: char *bp, *host, *src, *suser, *thost, *tuser;
328:
329: *targ++ = 0;
330: if (*targ == 0)
331: targ = ".";
332:
333: if ((thost = strchr(argv[argc - 1], '@'))) {
334: /* user@host */
335: *thost++ = 0;
336: tuser = argv[argc - 1];
337: if (*tuser == '\0')
338: tuser = NULL;
339: else if (!okname(tuser))
340: exit(1);
341: } else {
342: thost = argv[argc - 1];
343: tuser = NULL;
344: }
345:
346: for (i = 0; i < argc - 1; i++) {
347: src = colon(argv[i]);
1.18 markus 348: if (src) { /* remote to remote */
1.1 deraadt 349: *src++ = 0;
350: if (*src == 0)
351: src = ".";
352: host = strchr(argv[i], '@');
1.34 deraadt 353: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 354: strlen(src) + (tuser ? strlen(tuser) : 0) +
355: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 356: bp = xmalloc(len);
1.1 deraadt 357: if (host) {
358: *host++ = 0;
1.23 markus 359: host = cleanhostname(host);
1.1 deraadt 360: suser = argv[i];
361: if (*suser == '\0')
362: suser = pwd->pw_name;
363: else if (!okname(suser))
364: continue;
1.55 deraadt 365: snprintf(bp, len,
366: "%s%s -x -o'FallBackToRsh no' -n "
367: "-l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 368: ssh_program, verbose_mode ? " -v" : "",
369: suser, host, cmd, src,
370: tuser ? tuser : "", tuser ? "@" : "",
371: thost, targ);
1.23 markus 372: } else {
373: host = cleanhostname(argv[i]);
1.55 deraadt 374: snprintf(bp, len,
375: "exec %s%s -x -o'FallBackToRsh no' -n %s "
376: "%s %s '%s%s%s:%s'",
1.44 deraadt 377: ssh_program, verbose_mode ? " -v" : "",
378: host, cmd, src,
379: tuser ? tuser : "", tuser ? "@" : "",
380: thost, targ);
1.23 markus 381: }
1.18 markus 382: if (verbose_mode)
383: fprintf(stderr, "Executing: %s\n", bp);
384: (void) system(bp);
385: (void) xfree(bp);
386: } else { /* local to remote */
1.1 deraadt 387: if (remin == -1) {
388: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 389: bp = xmalloc(len);
1.55 deraadt 390: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 391: host = cleanhostname(thost);
1.35 deraadt 392: if (do_cmd(host, tuser, bp, &remin,
393: &remout, argc) < 0)
1.18 markus 394: exit(1);
1.1 deraadt 395: if (response() < 0)
396: exit(1);
1.18 markus 397: (void) xfree(bp);
1.1 deraadt 398: }
1.18 markus 399: source(1, argv + i);
1.1 deraadt 400: }
401: }
402: }
403:
404: void
405: tolocal(argc, argv)
406: int argc;
407: char *argv[];
408: {
409: int i, len;
410: char *bp, *host, *src, *suser;
411:
412: for (i = 0; i < argc - 1; i++) {
1.18 markus 413: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 414: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 415: strlen(argv[argc - 1]) + 20;
1.1 deraadt 416: bp = xmalloc(len);
1.55 deraadt 417: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 418: iamrecursive ? " -r" : "", pflag ? " -p" : "",
419: argv[i], argv[argc - 1]);
1.18 markus 420: if (verbose_mode)
421: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 422: if (system(bp))
423: ++errs;
1.18 markus 424: (void) xfree(bp);
1.1 deraadt 425: continue;
426: }
427: *src++ = 0;
428: if (*src == 0)
429: src = ".";
430: if ((host = strchr(argv[i], '@')) == NULL) {
431: host = argv[i];
432: suser = NULL;
433: } else {
434: *host++ = 0;
435: suser = argv[i];
436: if (*suser == '\0')
437: suser = pwd->pw_name;
438: else if (!okname(suser))
439: continue;
440: }
1.23 markus 441: host = cleanhostname(host);
1.1 deraadt 442: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 443: bp = xmalloc(len);
1.55 deraadt 444: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 445: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 446: (void) xfree(bp);
447: ++errs;
448: continue;
1.1 deraadt 449: }
1.18 markus 450: xfree(bp);
1.1 deraadt 451: sink(1, argv + argc - 1);
1.18 markus 452: (void) close(remin);
1.1 deraadt 453: remin = remout = -1;
454: }
455: }
456:
457: void
458: source(argc, argv)
459: int argc;
460: char *argv[];
461: {
462: struct stat stb;
463: static BUF buffer;
464: BUF *bp;
1.68 markus 465: off_t i, amt, result;
466: int fd, haderr, indx;
1.1 deraadt 467: char *last, *name, buf[2048];
1.65 deraadt 468: int len;
1.1 deraadt 469:
470: for (indx = 0; indx < argc; ++indx) {
1.18 markus 471: name = argv[indx];
1.11 aaron 472: statbytes = 0;
1.65 deraadt 473: len = strlen(name);
474: while (len > 1 && name[len-1] == '/')
475: name[--len] = '\0';
1.1 deraadt 476: if ((fd = open(name, O_RDONLY, 0)) < 0)
477: goto syserr;
478: if (fstat(fd, &stb) < 0) {
479: syserr: run_err("%s: %s", name, strerror(errno));
480: goto next;
481: }
482: switch (stb.st_mode & S_IFMT) {
483: case S_IFREG:
484: break;
485: case S_IFDIR:
486: if (iamrecursive) {
487: rsource(name, &stb);
488: goto next;
489: }
490: /* FALLTHROUGH */
491: default:
492: run_err("%s: not a regular file", name);
493: goto next;
494: }
495: if ((last = strrchr(name, '/')) == NULL)
496: last = name;
497: else
498: ++last;
1.11 aaron 499: curfile = last;
1.1 deraadt 500: if (pflag) {
501: /*
502: * Make it compatible with possible future
503: * versions expecting microseconds.
504: */
1.55 deraadt 505: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 506: (u_long) stb.st_mtime,
507: (u_long) stb.st_atime);
1.29 deraadt 508: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 509: if (response() < 0)
510: goto next;
511: }
512: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 513: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 514: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 515: (long long)stb.st_size, last);
1.18 markus 516: if (verbose_mode) {
517: fprintf(stderr, "Sending file modes: %s", buf);
518: fflush(stderr);
519: }
1.29 deraadt 520: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 521: if (response() < 0)
522: goto next;
523: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 524: next: (void) close(fd);
1.1 deraadt 525: continue;
526: }
1.12 aaron 527: if (showprogress) {
528: totalbytes = stb.st_size;
1.6 aaron 529: progressmeter(-1);
1.12 aaron 530: }
1.1 deraadt 531: /* Keep writing after an error so that we stay sync'd up. */
532: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
533: amt = bp->cnt;
534: if (i + amt > stb.st_size)
535: amt = stb.st_size - i;
536: if (!haderr) {
1.30 deraadt 537: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 538: if (result != amt)
539: haderr = result >= 0 ? EIO : errno;
540: }
541: if (haderr)
1.29 deraadt 542: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 543: else {
1.29 deraadt 544: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 545: if (result != amt)
546: haderr = result >= 0 ? EIO : errno;
1.4 aaron 547: statbytes += result;
1.1 deraadt 548: }
549: }
1.18 markus 550: if (showprogress)
1.6 aaron 551: progressmeter(1);
1.4 aaron 552:
1.1 deraadt 553: if (close(fd) < 0 && !haderr)
554: haderr = errno;
555: if (!haderr)
1.29 deraadt 556: (void) atomicio(write, remout, "", 1);
1.1 deraadt 557: else
558: run_err("%s: %s", name, strerror(haderr));
1.18 markus 559: (void) response();
1.1 deraadt 560: }
561: }
562:
563: void
564: rsource(name, statp)
565: char *name;
566: struct stat *statp;
567: {
568: DIR *dirp;
569: struct dirent *dp;
570: char *last, *vect[1], path[1100];
571:
572: if (!(dirp = opendir(name))) {
573: run_err("%s: %s", name, strerror(errno));
574: return;
575: }
576: last = strrchr(name, '/');
577: if (last == 0)
578: last = name;
579: else
580: last++;
581: if (pflag) {
1.55 deraadt 582: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 583: (u_long) statp->st_mtime,
584: (u_long) statp->st_atime);
1.29 deraadt 585: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 586: if (response() < 0) {
587: closedir(dirp);
588: return;
589: }
590: }
1.55 deraadt 591: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 592: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 593: if (verbose_mode)
594: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 595: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 596: if (response() < 0) {
597: closedir(dirp);
598: return;
599: }
1.63 stevesk 600: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 601: if (dp->d_ino == 0)
602: continue;
603: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
604: continue;
605: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
606: run_err("%s/%s: name too long", name, dp->d_name);
607: continue;
608: }
1.55 deraadt 609: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 610: vect[0] = path;
611: source(1, vect);
612: }
1.18 markus 613: (void) closedir(dirp);
1.29 deraadt 614: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 615: (void) response();
1.1 deraadt 616: }
617:
618: void
619: sink(argc, argv)
620: int argc;
621: char *argv[];
622: {
623: static BUF buffer;
624: struct stat stb;
1.18 markus 625: enum {
626: YES, NO, DISPLAYED
627: } wrerr;
1.1 deraadt 628: BUF *bp;
629: off_t i, j;
630: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 631: off_t size;
632: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 633: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 634: struct timeval tv[2];
1.1 deraadt 635:
1.66 stevesk 636: #define atime tv[0]
637: #define mtime tv[1]
1.1 deraadt 638: #define SCREWUP(str) { why = str; goto screwup; }
639:
640: setimes = targisdir = 0;
641: mask = umask(0);
642: if (!pflag)
1.18 markus 643: (void) umask(mask);
1.1 deraadt 644: if (argc != 1) {
645: run_err("ambiguous target");
646: exit(1);
647: }
648: targ = *argv;
649: if (targetshouldbedirectory)
650: verifydir(targ);
1.18 markus 651:
1.29 deraadt 652: (void) atomicio(write, remout, "", 1);
1.1 deraadt 653: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
654: targisdir = 1;
655: for (first = 1;; first = 0) {
656: cp = buf;
1.30 deraadt 657: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 658: return;
659: if (*cp++ == '\n')
660: SCREWUP("unexpected <newline>");
661: do {
1.30 deraadt 662: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 663: SCREWUP("lost connection");
664: *cp++ = ch;
665: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
666: *cp = 0;
667:
668: if (buf[0] == '\01' || buf[0] == '\02') {
669: if (iamremote == 0)
1.29 deraadt 670: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 671: buf + 1, strlen(buf + 1));
1.1 deraadt 672: if (buf[0] == '\02')
673: exit(1);
674: ++errs;
675: continue;
676: }
677: if (buf[0] == 'E') {
1.29 deraadt 678: (void) atomicio(write, remout, "", 1);
1.1 deraadt 679: return;
680: }
681: if (ch == '\n')
682: *--cp = 0;
683:
684: cp = buf;
685: if (*cp == 'T') {
686: setimes++;
687: cp++;
1.66 stevesk 688: mtime.tv_sec = strtol(cp, &cp, 10);
689: if (!cp || *cp++ != ' ')
1.1 deraadt 690: SCREWUP("mtime.sec not delimited");
1.66 stevesk 691: mtime.tv_usec = strtol(cp, &cp, 10);
692: if (!cp || *cp++ != ' ')
1.1 deraadt 693: SCREWUP("mtime.usec not delimited");
1.66 stevesk 694: atime.tv_sec = strtol(cp, &cp, 10);
695: if (!cp || *cp++ != ' ')
1.1 deraadt 696: SCREWUP("atime.sec not delimited");
1.66 stevesk 697: atime.tv_usec = strtol(cp, &cp, 10);
698: if (!cp || *cp++ != '\0')
1.1 deraadt 699: SCREWUP("atime.usec not delimited");
1.29 deraadt 700: (void) atomicio(write, remout, "", 1);
1.1 deraadt 701: continue;
702: }
703: if (*cp != 'C' && *cp != 'D') {
704: /*
705: * Check for the case "rcp remote:foo\* local:bar".
706: * In this case, the line "No match." can be returned
707: * by the shell before the rcp command on the remote is
708: * executed so the ^Aerror_message convention isn't
709: * followed.
710: */
711: if (first) {
712: run_err("%s", cp);
713: exit(1);
714: }
715: SCREWUP("expected control record");
716: }
717: mode = 0;
718: for (++cp; cp < buf + 5; cp++) {
719: if (*cp < '0' || *cp > '7')
720: SCREWUP("bad mode");
721: mode = (mode << 3) | (*cp - '0');
722: }
723: if (*cp++ != ' ')
724: SCREWUP("mode not delimited");
725:
1.63 stevesk 726: for (size = 0; isdigit(*cp);)
1.1 deraadt 727: size = size * 10 + (*cp++ - '0');
728: if (*cp++ != ' ')
729: SCREWUP("size not delimited");
730: if (targisdir) {
731: static char *namebuf;
732: static int cursize;
733: size_t need;
734:
735: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 736: if (need > cursize) {
1.58 danh 737: if (namebuf)
738: xfree(namebuf);
1.18 markus 739: namebuf = xmalloc(need);
1.55 deraadt 740: cursize = need;
741: }
742: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.35 deraadt 743: *targ ? "/" : "", cp);
1.1 deraadt 744: np = namebuf;
745: } else
746: np = targ;
1.12 aaron 747: curfile = cp;
1.1 deraadt 748: exists = stat(np, &stb) == 0;
749: if (buf[0] == 'D') {
750: int mod_flag = pflag;
751: if (exists) {
752: if (!S_ISDIR(stb.st_mode)) {
753: errno = ENOTDIR;
754: goto bad;
755: }
756: if (pflag)
1.18 markus 757: (void) chmod(np, mode);
1.1 deraadt 758: } else {
1.18 markus 759: /* Handle copying from a read-only
760: directory */
1.1 deraadt 761: mod_flag = 1;
762: if (mkdir(np, mode | S_IRWXU) < 0)
763: goto bad;
764: }
1.58 danh 765: vect[0] = xstrdup(np);
1.1 deraadt 766: sink(1, vect);
767: if (setimes) {
768: setimes = 0;
1.59 deraadt 769: if (utimes(vect[0], tv) < 0)
1.18 markus 770: run_err("%s: set times: %s",
1.59 deraadt 771: vect[0], strerror(errno));
1.1 deraadt 772: }
773: if (mod_flag)
1.59 deraadt 774: (void) chmod(vect[0], mode);
775: if (vect[0])
776: xfree(vect[0]);
1.1 deraadt 777: continue;
778: }
779: omode = mode;
780: mode |= S_IWRITE;
1.71 markus 781: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 782: bad: run_err("%s: %s", np, strerror(errno));
783: continue;
784: }
1.29 deraadt 785: (void) atomicio(write, remout, "", 1);
1.1 deraadt 786: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 787: (void) close(ofd);
1.1 deraadt 788: continue;
789: }
790: cp = bp->buf;
791: wrerr = NO;
1.7 deraadt 792:
793: if (showprogress) {
794: totalbytes = size;
795: progressmeter(-1);
796: }
1.12 aaron 797: statbytes = 0;
1.1 deraadt 798: for (count = i = 0; i < size; i += 4096) {
799: amt = 4096;
800: if (i + amt > size)
801: amt = size - i;
802: count += amt;
803: do {
1.43 markus 804: j = read(remin, cp, amt);
805: if (j == -1 && (errno == EINTR || errno == EAGAIN)) {
806: continue;
807: } else if (j <= 0) {
1.1 deraadt 808: run_err("%s", j ? strerror(errno) :
1.63 stevesk 809: "dropped connection");
1.1 deraadt 810: exit(1);
811: }
812: amt -= j;
813: cp += j;
1.18 markus 814: statbytes += j;
1.1 deraadt 815: } while (amt > 0);
816: if (count == bp->cnt) {
817: /* Keep reading so we stay sync'd up. */
818: if (wrerr == NO) {
1.30 deraadt 819: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 820: if (j != count) {
821: wrerr = YES;
1.18 markus 822: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 823: }
824: }
825: count = 0;
826: cp = bp->buf;
827: }
828: }
1.7 deraadt 829: if (showprogress)
830: progressmeter(1);
1.1 deraadt 831: if (count != 0 && wrerr == NO &&
1.30 deraadt 832: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 833: wrerr = YES;
1.18 markus 834: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 835: }
836: if (ftruncate(ofd, size)) {
837: run_err("%s: truncate: %s", np, strerror(errno));
838: wrerr = DISPLAYED;
839: }
840: if (pflag) {
841: if (exists || omode != mode)
842: if (fchmod(ofd, omode))
843: run_err("%s: set mode: %s",
1.63 stevesk 844: np, strerror(errno));
1.1 deraadt 845: } else {
846: if (!exists && omode != mode)
847: if (fchmod(ofd, omode & ~mask))
848: run_err("%s: set mode: %s",
1.63 stevesk 849: np, strerror(errno));
1.1 deraadt 850: }
1.33 provos 851: if (close(ofd) == -1) {
852: wrerr = YES;
853: wrerrno = errno;
854: }
1.18 markus 855: (void) response();
1.1 deraadt 856: if (setimes && wrerr == NO) {
857: setimes = 0;
1.40 markus 858: if (utimes(np, tv) < 0) {
1.1 deraadt 859: run_err("%s: set times: %s",
1.63 stevesk 860: np, strerror(errno));
1.1 deraadt 861: wrerr = DISPLAYED;
862: }
863: }
1.18 markus 864: switch (wrerr) {
1.1 deraadt 865: case YES:
866: run_err("%s: %s", np, strerror(wrerrno));
867: break;
868: case NO:
1.29 deraadt 869: (void) atomicio(write, remout, "", 1);
1.1 deraadt 870: break;
871: case DISPLAYED:
872: break;
873: }
874: }
875: screwup:
876: run_err("protocol error: %s", why);
877: exit(1);
878: }
879:
880: int
881: response()
882: {
883: char ch, *cp, resp, rbuf[2048];
884:
1.30 deraadt 885: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 886: lostconn(0);
887:
888: cp = rbuf;
1.18 markus 889: switch (resp) {
890: case 0: /* ok */
1.1 deraadt 891: return (0);
892: default:
893: *cp++ = resp;
894: /* FALLTHROUGH */
1.18 markus 895: case 1: /* error, followed by error msg */
896: case 2: /* fatal error, "" */
1.1 deraadt 897: do {
1.30 deraadt 898: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 899: lostconn(0);
900: *cp++ = ch;
901: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
902:
903: if (!iamremote)
1.29 deraadt 904: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 905: ++errs;
906: if (resp == 1)
907: return (-1);
908: exit(1);
909: }
910: /* NOTREACHED */
911: }
912:
913: void
914: usage()
915: {
1.34 deraadt 916: (void) fprintf(stderr, "usage: scp "
1.64 stevesk 917: "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2\n"
918: " or: scp [options] f1 ... fn directory\n");
1.1 deraadt 919: exit(1);
920: }
921:
922: void
1.18 markus 923: run_err(const char *fmt,...)
1.1 deraadt 924: {
925: static FILE *fp;
926: va_list ap;
927: va_start(ap, fmt);
928:
929: ++errs;
930: if (fp == NULL && !(fp = fdopen(remout, "w")))
931: return;
1.18 markus 932: (void) fprintf(fp, "%c", 0x01);
933: (void) fprintf(fp, "scp: ");
934: (void) vfprintf(fp, fmt, ap);
935: (void) fprintf(fp, "\n");
936: (void) fflush(fp);
937:
938: if (!iamremote) {
939: vfprintf(stderr, fmt, ap);
940: fprintf(stderr, "\n");
941: }
1.1 deraadt 942: va_end(ap);
943: }
944:
945: void
946: verifydir(cp)
947: char *cp;
948: {
949: struct stat stb;
950:
951: if (!stat(cp, &stb)) {
952: if (S_ISDIR(stb.st_mode))
953: return;
954: errno = ENOTDIR;
955: }
956: run_err("%s: %s", cp, strerror(errno));
957: exit(1);
958: }
959:
960: int
961: okname(cp0)
962: char *cp0;
963: {
964: int c;
965: char *cp;
966:
967: cp = cp0;
968: do {
969: c = *cp;
970: if (c & 0200)
971: goto bad;
1.46 markus 972: if (!isalpha(c) && !isdigit(c) &&
973: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 974: goto bad;
975: } while (*++cp);
976: return (1);
977:
1.25 markus 978: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 979: return (0);
980: }
981:
982: BUF *
983: allocbuf(bp, fd, blksize)
984: BUF *bp;
985: int fd, blksize;
986: {
987: size_t size;
988: struct stat stb;
989:
990: if (fstat(fd, &stb) < 0) {
991: run_err("fstat: %s", strerror(errno));
992: return (0);
993: }
1.18 markus 994: if (stb.st_blksize == 0)
995: size = blksize;
996: else
997: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 998: stb.st_blksize;
1.1 deraadt 999: if (bp->cnt >= size)
1000: return (bp);
1.18 markus 1001: if (bp->buf == NULL)
1002: bp->buf = xmalloc(size);
1003: else
1004: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1005: bp->cnt = size;
1006: return (bp);
1007: }
1008:
1009: void
1010: lostconn(signo)
1011: int signo;
1012: {
1013: if (!iamremote)
1014: fprintf(stderr, "lost connection\n");
1015: exit(1);
1016: }
1.4 aaron 1017:
1.10 deraadt 1018:
1.8 deraadt 1019: void
1020: alarmtimer(int wait)
1.4 aaron 1021: {
1.18 markus 1022: struct itimerval itv;
1.4 aaron 1023:
1.18 markus 1024: itv.it_value.tv_sec = wait;
1025: itv.it_value.tv_usec = 0;
1026: itv.it_interval = itv.it_value;
1027: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1028: }
1029:
1.8 deraadt 1030: void
1.26 markus 1031: updateprogressmeter(int ignore)
1.4 aaron 1032: {
1.9 deraadt 1033: int save_errno = errno;
1034:
1.4 aaron 1035: progressmeter(0);
1.9 deraadt 1036: errno = save_errno;
1.4 aaron 1037: }
1038:
1.16 deraadt 1039: int
1.56 itojun 1040: foregroundproc(void)
1.16 deraadt 1041: {
1042: static pid_t pgrp = -1;
1043: int ctty_pgrp;
1044:
1045: if (pgrp == -1)
1046: pgrp = getpgrp();
1047:
1.18 markus 1048: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1049: ctty_pgrp == pgrp));
1.16 deraadt 1050: }
1051:
1.8 deraadt 1052: void
1053: progressmeter(int flag)
1.4 aaron 1054: {
1055: static const char prefixes[] = " KMGTP";
1056: static struct timeval lastupdate;
1.11 aaron 1057: static off_t lastsize;
1.4 aaron 1058: struct timeval now, td, wait;
1059: off_t cursize, abbrevsize;
1060: double elapsed;
1061: int ratio, barlength, i, remaining;
1062: char buf[256];
1063:
1064: if (flag == -1) {
1.18 markus 1065: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1066: lastupdate = start;
1.11 aaron 1067: lastsize = 0;
1.18 markus 1068: }
1.16 deraadt 1069: if (foregroundproc() == 0)
1070: return;
1071:
1.18 markus 1072: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1073: cursize = statbytes;
1.13 aaron 1074: if (totalbytes != 0) {
1.21 markus 1075: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1076: ratio = MAX(ratio, 0);
1077: ratio = MIN(ratio, 100);
1.18 markus 1078: } else
1.13 aaron 1079: ratio = 100;
1080:
1.18 markus 1081: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1082:
1.11 aaron 1083: barlength = getttywidth() - 51;
1.4 aaron 1084: if (barlength > 0) {
1085: i = barlength * ratio / 100;
1086: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1087: "|%.*s%*s|", i,
1088: "*****************************************************************************"
1089: "*****************************************************************************",
1090: barlength - i, "");
1.4 aaron 1091: }
1092: i = 0;
1093: abbrevsize = cursize;
1094: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1095: i++;
1096: abbrevsize >>= 10;
1097: }
1.54 itojun 1098: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1099: (unsigned long long) abbrevsize, prefixes[i],
1100: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1101:
1102: timersub(&now, &lastupdate, &wait);
1103: if (cursize > lastsize) {
1104: lastupdate = now;
1105: lastsize = cursize;
1106: if (wait.tv_sec >= STALLTIME) {
1107: start.tv_sec += wait.tv_sec;
1108: start.tv_usec += wait.tv_usec;
1109: }
1110: wait.tv_sec = 0;
1111: }
1112: timersub(&now, &start, &td);
1.6 aaron 1113: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1114:
1.44 deraadt 1115: if (flag != 1 &&
1116: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1117: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1118: " --:-- ETA");
1.4 aaron 1119: } else if (wait.tv_sec >= STALLTIME) {
1120: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1121: " - stalled -");
1.4 aaron 1122: } else {
1.28 deraadt 1123: if (flag != 1)
1.44 deraadt 1124: remaining = (int)(totalbytes / (statbytes / elapsed) -
1125: elapsed);
1.28 deraadt 1126: else
1127: remaining = elapsed;
1128:
1.14 aaron 1129: i = remaining / 3600;
1.4 aaron 1130: if (i)
1131: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1132: "%2d:", i);
1.4 aaron 1133: else
1134: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1135: " ");
1.4 aaron 1136: i = remaining % 3600;
1137: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1138: "%02d:%02d%s", i / 60, i % 60,
1139: (flag != 1) ? " ETA" : " ");
1.4 aaron 1140: }
1.10 deraadt 1141: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1142:
1143: if (flag == -1) {
1.26 markus 1144: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1145: alarmtimer(1);
1146: } else if (flag == 1) {
1.10 deraadt 1147: alarmtimer(0);
1.29 deraadt 1148: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1149: statbytes = 0;
1.4 aaron 1150: }
1151: }
1152:
1.8 deraadt 1153: int
1154: getttywidth(void)
1.4 aaron 1155: {
1156: struct winsize winsize;
1157:
1158: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1159: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1160: else
1.18 markus 1161: return (80);
1.4 aaron 1162: }
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