Annotation of src/usr.bin/ssh/scp.c, Revision 1.85
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"
1.85 ! markus 78: RCSID("$OpenBSD: scp.c,v 1.84 2001/09/19 19:24:19 stevesk Exp $");
1.1 deraadt 79:
80: #include "xmalloc.h"
1.51 markus 81: #include "atomicio.h"
1.50 markus 82: #include "pathnames.h"
1.51 markus 83: #include "log.h"
1.69 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");
1.84 stevesk 226: addargs(&args, "-oClearAllForwardings yes");
1.41 markus 227:
1.1 deraadt 228: fflag = tflag = 0;
1.83 stevesk 229: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:F:")) != -1)
1.18 markus 230: switch (ch) {
231: /* User-visible flags. */
1.23 markus 232: case '4':
1.41 markus 233: case '6':
234: case 'C':
1.70 mouring 235: addargs(&args, "-%c", ch);
1.41 markus 236: break;
237: case 'o':
238: case 'c':
239: case 'i':
1.83 stevesk 240: case 'F':
1.70 mouring 241: addargs(&args, "-%c%s", ch, optarg);
1.23 markus 242: break;
1.41 markus 243: case 'P':
1.70 mouring 244: addargs(&args, "-p%s", optarg);
1.41 markus 245: break;
246: case 'B':
1.70 mouring 247: addargs(&args, "-oBatchmode yes");
1.23 markus 248: break;
1.1 deraadt 249: case 'p':
250: pflag = 1;
251: break;
252: case 'r':
253: iamrecursive = 1;
254: break;
1.34 deraadt 255: case 'S':
1.41 markus 256: ssh_program = xstrdup(optarg);
257: break;
258: case 'v':
1.72 markus 259: addargs(&args, "-v");
1.41 markus 260: verbose_mode = 1;
261: break;
262: case 'q':
263: showprogress = 0;
1.34 deraadt 264: break;
265:
1.18 markus 266: /* Server options. */
1.1 deraadt 267: case 'd':
268: targetshouldbedirectory = 1;
269: break;
1.18 markus 270: case 'f': /* "from" */
1.1 deraadt 271: iamremote = 1;
272: fflag = 1;
273: break;
1.18 markus 274: case 't': /* "to" */
1.1 deraadt 275: iamremote = 1;
276: tflag = 1;
277: break;
278: default:
279: usage();
280: }
281: argc -= optind;
282: argv += optind;
283:
284: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 285: fatal("unknown user %d", (int) userid);
1.1 deraadt 286:
1.18 markus 287: if (!isatty(STDERR_FILENO))
1.7 deraadt 288: showprogress = 0;
289:
1.1 deraadt 290: remin = STDIN_FILENO;
291: remout = STDOUT_FILENO;
292:
1.52 stevesk 293: if (fflag) {
1.18 markus 294: /* Follow "protocol", send data. */
295: (void) response();
1.1 deraadt 296: source(argc, argv);
297: exit(errs != 0);
298: }
1.18 markus 299: if (tflag) {
300: /* Receive data. */
1.1 deraadt 301: sink(argc, argv);
302: exit(errs != 0);
303: }
304: if (argc < 2)
305: usage();
306: if (argc > 2)
307: targetshouldbedirectory = 1;
308:
309: remin = remout = -1;
310: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 311: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
312: verbose_mode ? " -v" : "",
1.35 deraadt 313: iamrecursive ? " -r" : "", pflag ? " -p" : "",
314: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 315:
1.18 markus 316: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 317:
318: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
319: toremote(targ, argc, argv);
320: else {
1.18 markus 321: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 322: if (targetshouldbedirectory)
323: verifydir(argv[argc - 1]);
324: }
325: exit(errs != 0);
326: }
327:
328: void
329: toremote(targ, argc, argv)
330: char *targ, *argv[];
331: int argc;
332: {
333: int i, len;
334: char *bp, *host, *src, *suser, *thost, *tuser;
335:
336: *targ++ = 0;
337: if (*targ == 0)
338: targ = ".";
339:
340: if ((thost = strchr(argv[argc - 1], '@'))) {
341: /* user@host */
342: *thost++ = 0;
343: tuser = argv[argc - 1];
344: if (*tuser == '\0')
345: tuser = NULL;
346: else if (!okname(tuser))
347: exit(1);
348: } else {
349: thost = argv[argc - 1];
350: tuser = NULL;
351: }
352:
353: for (i = 0; i < argc - 1; i++) {
354: src = colon(argv[i]);
1.18 markus 355: if (src) { /* remote to remote */
1.84 stevesk 356: static char *ssh_options =
357: "-x -o'FallBackToRsh no' "
358: "-o'ClearAllForwardings yes'";
1.1 deraadt 359: *src++ = 0;
360: if (*src == 0)
361: src = ".";
362: host = strchr(argv[i], '@');
1.34 deraadt 363: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 364: strlen(src) + (tuser ? strlen(tuser) : 0) +
1.84 stevesk 365: strlen(thost) + strlen(targ) +
366: strlen(ssh_options) + CMDNEEDS + 20;
1.18 markus 367: bp = xmalloc(len);
1.1 deraadt 368: if (host) {
369: *host++ = 0;
1.23 markus 370: host = cleanhostname(host);
1.1 deraadt 371: suser = argv[i];
372: if (*suser == '\0')
373: suser = pwd->pw_name;
374: else if (!okname(suser))
375: continue;
1.55 deraadt 376: snprintf(bp, len,
1.84 stevesk 377: "%s%s %s -n "
1.55 deraadt 378: "-l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 379: ssh_program, verbose_mode ? " -v" : "",
1.84 stevesk 380: ssh_options, suser, host, cmd, src,
1.44 deraadt 381: tuser ? tuser : "", tuser ? "@" : "",
382: thost, targ);
1.23 markus 383: } else {
384: host = cleanhostname(argv[i]);
1.55 deraadt 385: snprintf(bp, len,
1.84 stevesk 386: "exec %s%s %s -n %s "
1.55 deraadt 387: "%s %s '%s%s%s:%s'",
1.44 deraadt 388: ssh_program, verbose_mode ? " -v" : "",
1.84 stevesk 389: ssh_options, host, cmd, src,
1.44 deraadt 390: tuser ? tuser : "", tuser ? "@" : "",
391: thost, targ);
1.23 markus 392: }
1.18 markus 393: if (verbose_mode)
394: fprintf(stderr, "Executing: %s\n", bp);
395: (void) system(bp);
396: (void) xfree(bp);
397: } else { /* local to remote */
1.1 deraadt 398: if (remin == -1) {
399: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 400: bp = xmalloc(len);
1.55 deraadt 401: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 402: host = cleanhostname(thost);
1.35 deraadt 403: if (do_cmd(host, tuser, bp, &remin,
404: &remout, argc) < 0)
1.18 markus 405: exit(1);
1.1 deraadt 406: if (response() < 0)
407: exit(1);
1.18 markus 408: (void) xfree(bp);
1.1 deraadt 409: }
1.18 markus 410: source(1, argv + i);
1.1 deraadt 411: }
412: }
413: }
414:
415: void
416: tolocal(argc, argv)
417: int argc;
418: char *argv[];
419: {
420: int i, len;
421: char *bp, *host, *src, *suser;
422:
423: for (i = 0; i < argc - 1; i++) {
1.18 markus 424: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 425: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 426: strlen(argv[argc - 1]) + 20;
1.1 deraadt 427: bp = xmalloc(len);
1.55 deraadt 428: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 429: iamrecursive ? " -r" : "", pflag ? " -p" : "",
430: argv[i], argv[argc - 1]);
1.18 markus 431: if (verbose_mode)
432: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 433: if (system(bp))
434: ++errs;
1.18 markus 435: (void) xfree(bp);
1.1 deraadt 436: continue;
437: }
438: *src++ = 0;
439: if (*src == 0)
440: src = ".";
441: if ((host = strchr(argv[i], '@')) == NULL) {
442: host = argv[i];
443: suser = NULL;
444: } else {
445: *host++ = 0;
446: suser = argv[i];
447: if (*suser == '\0')
448: suser = pwd->pw_name;
449: else if (!okname(suser))
450: continue;
451: }
1.23 markus 452: host = cleanhostname(host);
1.1 deraadt 453: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 454: bp = xmalloc(len);
1.55 deraadt 455: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 456: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 457: (void) xfree(bp);
458: ++errs;
459: continue;
1.1 deraadt 460: }
1.18 markus 461: xfree(bp);
1.1 deraadt 462: sink(1, argv + argc - 1);
1.18 markus 463: (void) close(remin);
1.1 deraadt 464: remin = remout = -1;
465: }
466: }
467:
468: void
469: source(argc, argv)
470: int argc;
471: char *argv[];
472: {
473: struct stat stb;
474: static BUF buffer;
475: BUF *bp;
1.68 markus 476: off_t i, amt, result;
477: int fd, haderr, indx;
1.1 deraadt 478: char *last, *name, buf[2048];
1.65 deraadt 479: int len;
1.1 deraadt 480:
481: for (indx = 0; indx < argc; ++indx) {
1.18 markus 482: name = argv[indx];
1.11 aaron 483: statbytes = 0;
1.65 deraadt 484: len = strlen(name);
485: while (len > 1 && name[len-1] == '/')
486: name[--len] = '\0';
1.85 ! markus 487: if (strchr(name, '\n') != NULL) {
! 488: run_err("%s: skipping, filename contains a newline",
! 489: name);
! 490: goto next;
! 491: }
1.1 deraadt 492: if ((fd = open(name, O_RDONLY, 0)) < 0)
493: goto syserr;
494: if (fstat(fd, &stb) < 0) {
495: syserr: run_err("%s: %s", name, strerror(errno));
496: goto next;
497: }
498: switch (stb.st_mode & S_IFMT) {
499: case S_IFREG:
500: break;
501: case S_IFDIR:
502: if (iamrecursive) {
503: rsource(name, &stb);
504: goto next;
505: }
506: /* FALLTHROUGH */
507: default:
508: run_err("%s: not a regular file", name);
509: goto next;
510: }
511: if ((last = strrchr(name, '/')) == NULL)
512: last = name;
513: else
514: ++last;
1.11 aaron 515: curfile = last;
1.1 deraadt 516: if (pflag) {
517: /*
518: * Make it compatible with possible future
519: * versions expecting microseconds.
520: */
1.55 deraadt 521: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 522: (u_long) stb.st_mtime,
523: (u_long) stb.st_atime);
1.29 deraadt 524: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 525: if (response() < 0)
526: goto next;
527: }
528: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 529: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 530: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 531: (long long)stb.st_size, last);
1.18 markus 532: if (verbose_mode) {
533: fprintf(stderr, "Sending file modes: %s", buf);
534: fflush(stderr);
535: }
1.29 deraadt 536: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 537: if (response() < 0)
538: goto next;
539: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 540: next: (void) close(fd);
1.1 deraadt 541: continue;
542: }
1.12 aaron 543: if (showprogress) {
544: totalbytes = stb.st_size;
1.6 aaron 545: progressmeter(-1);
1.12 aaron 546: }
1.1 deraadt 547: /* Keep writing after an error so that we stay sync'd up. */
548: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
549: amt = bp->cnt;
550: if (i + amt > stb.st_size)
551: amt = stb.st_size - i;
552: if (!haderr) {
1.30 deraadt 553: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 554: if (result != amt)
555: haderr = result >= 0 ? EIO : errno;
556: }
557: if (haderr)
1.29 deraadt 558: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 559: else {
1.29 deraadt 560: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 561: if (result != amt)
562: haderr = result >= 0 ? EIO : errno;
1.4 aaron 563: statbytes += result;
1.1 deraadt 564: }
565: }
1.18 markus 566: if (showprogress)
1.6 aaron 567: progressmeter(1);
1.4 aaron 568:
1.1 deraadt 569: if (close(fd) < 0 && !haderr)
570: haderr = errno;
571: if (!haderr)
1.29 deraadt 572: (void) atomicio(write, remout, "", 1);
1.1 deraadt 573: else
574: run_err("%s: %s", name, strerror(haderr));
1.18 markus 575: (void) response();
1.1 deraadt 576: }
577: }
578:
579: void
580: rsource(name, statp)
581: char *name;
582: struct stat *statp;
583: {
584: DIR *dirp;
585: struct dirent *dp;
586: char *last, *vect[1], path[1100];
587:
588: if (!(dirp = opendir(name))) {
589: run_err("%s: %s", name, strerror(errno));
590: return;
591: }
592: last = strrchr(name, '/');
593: if (last == 0)
594: last = name;
595: else
596: last++;
597: if (pflag) {
1.55 deraadt 598: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 599: (u_long) statp->st_mtime,
600: (u_long) statp->st_atime);
1.29 deraadt 601: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 602: if (response() < 0) {
603: closedir(dirp);
604: return;
605: }
606: }
1.55 deraadt 607: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 608: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 609: if (verbose_mode)
610: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 611: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 612: if (response() < 0) {
613: closedir(dirp);
614: return;
615: }
1.63 stevesk 616: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 617: if (dp->d_ino == 0)
618: continue;
619: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
620: continue;
621: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
622: run_err("%s/%s: name too long", name, dp->d_name);
623: continue;
624: }
1.55 deraadt 625: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 626: vect[0] = path;
627: source(1, vect);
628: }
1.18 markus 629: (void) closedir(dirp);
1.29 deraadt 630: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 631: (void) response();
1.1 deraadt 632: }
633:
634: void
635: sink(argc, argv)
636: int argc;
637: char *argv[];
638: {
639: static BUF buffer;
640: struct stat stb;
1.18 markus 641: enum {
642: YES, NO, DISPLAYED
643: } wrerr;
1.1 deraadt 644: BUF *bp;
645: off_t i, j;
646: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 647: off_t size;
648: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 649: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.40 markus 650: struct timeval tv[2];
1.1 deraadt 651:
1.66 stevesk 652: #define atime tv[0]
653: #define mtime tv[1]
1.75 deraadt 654: #define SCREWUP(str) do { why = str; goto screwup; } while (0)
1.1 deraadt 655:
656: setimes = targisdir = 0;
657: mask = umask(0);
658: if (!pflag)
1.18 markus 659: (void) umask(mask);
1.1 deraadt 660: if (argc != 1) {
661: run_err("ambiguous target");
662: exit(1);
663: }
664: targ = *argv;
665: if (targetshouldbedirectory)
666: verifydir(targ);
1.18 markus 667:
1.29 deraadt 668: (void) atomicio(write, remout, "", 1);
1.1 deraadt 669: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
670: targisdir = 1;
671: for (first = 1;; first = 0) {
672: cp = buf;
1.30 deraadt 673: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 674: return;
675: if (*cp++ == '\n')
676: SCREWUP("unexpected <newline>");
677: do {
1.30 deraadt 678: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 679: SCREWUP("lost connection");
680: *cp++ = ch;
681: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
682: *cp = 0;
683:
684: if (buf[0] == '\01' || buf[0] == '\02') {
685: if (iamremote == 0)
1.29 deraadt 686: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 687: buf + 1, strlen(buf + 1));
1.1 deraadt 688: if (buf[0] == '\02')
689: exit(1);
690: ++errs;
691: continue;
692: }
693: if (buf[0] == 'E') {
1.29 deraadt 694: (void) atomicio(write, remout, "", 1);
1.1 deraadt 695: return;
696: }
697: if (ch == '\n')
698: *--cp = 0;
699:
700: cp = buf;
701: if (*cp == 'T') {
702: setimes++;
703: cp++;
1.66 stevesk 704: mtime.tv_sec = strtol(cp, &cp, 10);
705: if (!cp || *cp++ != ' ')
1.1 deraadt 706: SCREWUP("mtime.sec not delimited");
1.66 stevesk 707: mtime.tv_usec = strtol(cp, &cp, 10);
708: if (!cp || *cp++ != ' ')
1.1 deraadt 709: SCREWUP("mtime.usec not delimited");
1.66 stevesk 710: atime.tv_sec = strtol(cp, &cp, 10);
711: if (!cp || *cp++ != ' ')
1.1 deraadt 712: SCREWUP("atime.sec not delimited");
1.66 stevesk 713: atime.tv_usec = strtol(cp, &cp, 10);
714: if (!cp || *cp++ != '\0')
1.1 deraadt 715: SCREWUP("atime.usec not delimited");
1.29 deraadt 716: (void) atomicio(write, remout, "", 1);
1.1 deraadt 717: continue;
718: }
719: if (*cp != 'C' && *cp != 'D') {
720: /*
721: * Check for the case "rcp remote:foo\* local:bar".
722: * In this case, the line "No match." can be returned
723: * by the shell before the rcp command on the remote is
724: * executed so the ^Aerror_message convention isn't
725: * followed.
726: */
727: if (first) {
728: run_err("%s", cp);
729: exit(1);
730: }
731: SCREWUP("expected control record");
732: }
733: mode = 0;
734: for (++cp; cp < buf + 5; cp++) {
735: if (*cp < '0' || *cp > '7')
736: SCREWUP("bad mode");
737: mode = (mode << 3) | (*cp - '0');
738: }
739: if (*cp++ != ' ')
740: SCREWUP("mode not delimited");
741:
1.63 stevesk 742: for (size = 0; isdigit(*cp);)
1.1 deraadt 743: size = size * 10 + (*cp++ - '0');
744: if (*cp++ != ' ')
745: SCREWUP("size not delimited");
746: if (targisdir) {
747: static char *namebuf;
748: static int cursize;
749: size_t need;
750:
751: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 752: if (need > cursize) {
1.58 danh 753: if (namebuf)
754: xfree(namebuf);
1.18 markus 755: namebuf = xmalloc(need);
1.55 deraadt 756: cursize = need;
757: }
758: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.35 deraadt 759: *targ ? "/" : "", cp);
1.1 deraadt 760: np = namebuf;
761: } else
762: np = targ;
1.12 aaron 763: curfile = cp;
1.1 deraadt 764: exists = stat(np, &stb) == 0;
765: if (buf[0] == 'D') {
766: int mod_flag = pflag;
767: if (exists) {
768: if (!S_ISDIR(stb.st_mode)) {
769: errno = ENOTDIR;
770: goto bad;
771: }
772: if (pflag)
1.18 markus 773: (void) chmod(np, mode);
1.1 deraadt 774: } else {
1.18 markus 775: /* Handle copying from a read-only
776: directory */
1.1 deraadt 777: mod_flag = 1;
778: if (mkdir(np, mode | S_IRWXU) < 0)
779: goto bad;
780: }
1.58 danh 781: vect[0] = xstrdup(np);
1.1 deraadt 782: sink(1, vect);
783: if (setimes) {
784: setimes = 0;
1.59 deraadt 785: if (utimes(vect[0], tv) < 0)
1.18 markus 786: run_err("%s: set times: %s",
1.59 deraadt 787: vect[0], strerror(errno));
1.1 deraadt 788: }
789: if (mod_flag)
1.59 deraadt 790: (void) chmod(vect[0], mode);
791: if (vect[0])
792: xfree(vect[0]);
1.1 deraadt 793: continue;
794: }
795: omode = mode;
796: mode |= S_IWRITE;
1.71 markus 797: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
1.1 deraadt 798: bad: run_err("%s: %s", np, strerror(errno));
799: continue;
800: }
1.29 deraadt 801: (void) atomicio(write, remout, "", 1);
1.1 deraadt 802: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 803: (void) close(ofd);
1.1 deraadt 804: continue;
805: }
806: cp = bp->buf;
807: wrerr = NO;
1.7 deraadt 808:
809: if (showprogress) {
810: totalbytes = size;
811: progressmeter(-1);
812: }
1.12 aaron 813: statbytes = 0;
1.1 deraadt 814: for (count = i = 0; i < size; i += 4096) {
815: amt = 4096;
816: if (i + amt > size)
817: amt = size - i;
818: count += amt;
819: do {
1.43 markus 820: j = read(remin, cp, amt);
1.78 deraadt 821: if (j == -1 && (errno == EINTR ||
822: errno == EAGAIN)) {
1.43 markus 823: continue;
824: } else if (j <= 0) {
1.1 deraadt 825: run_err("%s", j ? strerror(errno) :
1.63 stevesk 826: "dropped connection");
1.1 deraadt 827: exit(1);
828: }
829: amt -= j;
830: cp += j;
1.18 markus 831: statbytes += j;
1.1 deraadt 832: } while (amt > 0);
833: if (count == bp->cnt) {
834: /* Keep reading so we stay sync'd up. */
835: if (wrerr == NO) {
1.30 deraadt 836: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 837: if (j != count) {
838: wrerr = YES;
1.18 markus 839: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 840: }
841: }
842: count = 0;
843: cp = bp->buf;
844: }
845: }
1.7 deraadt 846: if (showprogress)
847: progressmeter(1);
1.1 deraadt 848: if (count != 0 && wrerr == NO &&
1.30 deraadt 849: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 850: wrerr = YES;
1.18 markus 851: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 852: }
853: if (ftruncate(ofd, size)) {
854: run_err("%s: truncate: %s", np, strerror(errno));
855: wrerr = DISPLAYED;
856: }
857: if (pflag) {
858: if (exists || omode != mode)
859: if (fchmod(ofd, omode))
860: run_err("%s: set mode: %s",
1.63 stevesk 861: np, strerror(errno));
1.1 deraadt 862: } else {
863: if (!exists && omode != mode)
864: if (fchmod(ofd, omode & ~mask))
865: run_err("%s: set mode: %s",
1.63 stevesk 866: np, strerror(errno));
1.1 deraadt 867: }
1.33 provos 868: if (close(ofd) == -1) {
869: wrerr = YES;
870: wrerrno = errno;
871: }
1.18 markus 872: (void) response();
1.1 deraadt 873: if (setimes && wrerr == NO) {
874: setimes = 0;
1.40 markus 875: if (utimes(np, tv) < 0) {
1.1 deraadt 876: run_err("%s: set times: %s",
1.63 stevesk 877: np, strerror(errno));
1.1 deraadt 878: wrerr = DISPLAYED;
879: }
880: }
1.18 markus 881: switch (wrerr) {
1.1 deraadt 882: case YES:
883: run_err("%s: %s", np, strerror(wrerrno));
884: break;
885: case NO:
1.29 deraadt 886: (void) atomicio(write, remout, "", 1);
1.1 deraadt 887: break;
888: case DISPLAYED:
889: break;
890: }
891: }
892: screwup:
893: run_err("protocol error: %s", why);
894: exit(1);
895: }
896:
897: int
898: response()
899: {
900: char ch, *cp, resp, rbuf[2048];
901:
1.30 deraadt 902: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 903: lostconn(0);
904:
905: cp = rbuf;
1.18 markus 906: switch (resp) {
907: case 0: /* ok */
1.1 deraadt 908: return (0);
909: default:
910: *cp++ = resp;
911: /* FALLTHROUGH */
1.18 markus 912: case 1: /* error, followed by error msg */
913: case 2: /* fatal error, "" */
1.1 deraadt 914: do {
1.30 deraadt 915: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 916: lostconn(0);
917: *cp++ = ch;
918: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
919:
920: if (!iamremote)
1.29 deraadt 921: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 922: ++errs;
923: if (resp == 1)
924: return (-1);
925: exit(1);
926: }
927: /* NOTREACHED */
928: }
929:
930: void
931: usage()
932: {
1.83 stevesk 933: (void) fprintf(stderr,
934: "usage: scp [-pqrvBC46] [-F config] [-S ssh] [-P port] [-c cipher] [-i identity]\n"
935: " [-o option] f1 f2\n"
1.64 stevesk 936: " or: scp [options] f1 ... fn directory\n");
1.1 deraadt 937: exit(1);
938: }
939:
940: void
1.18 markus 941: run_err(const char *fmt,...)
1.1 deraadt 942: {
943: static FILE *fp;
944: va_list ap;
945:
946: ++errs;
947: if (fp == NULL && !(fp = fdopen(remout, "w")))
948: return;
1.18 markus 949: (void) fprintf(fp, "%c", 0x01);
950: (void) fprintf(fp, "scp: ");
1.73 markus 951: va_start(ap, fmt);
1.18 markus 952: (void) vfprintf(fp, fmt, ap);
1.73 markus 953: va_end(ap);
1.18 markus 954: (void) fprintf(fp, "\n");
955: (void) fflush(fp);
956:
957: if (!iamremote) {
1.73 markus 958: va_start(ap, fmt);
1.18 markus 959: vfprintf(stderr, fmt, ap);
1.73 markus 960: va_end(ap);
1.18 markus 961: fprintf(stderr, "\n");
962: }
1.1 deraadt 963: }
964:
965: void
966: verifydir(cp)
967: char *cp;
968: {
969: struct stat stb;
970:
971: if (!stat(cp, &stb)) {
972: if (S_ISDIR(stb.st_mode))
973: return;
974: errno = ENOTDIR;
975: }
976: run_err("%s: %s", cp, strerror(errno));
977: exit(1);
978: }
979:
980: int
981: okname(cp0)
982: char *cp0;
983: {
984: int c;
985: char *cp;
986:
987: cp = cp0;
988: do {
1.75 deraadt 989: c = (int)*cp;
1.1 deraadt 990: if (c & 0200)
991: goto bad;
1.46 markus 992: if (!isalpha(c) && !isdigit(c) &&
993: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 994: goto bad;
995: } while (*++cp);
996: return (1);
997:
1.25 markus 998: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 999: return (0);
1000: }
1001:
1002: BUF *
1003: allocbuf(bp, fd, blksize)
1004: BUF *bp;
1005: int fd, blksize;
1006: {
1007: size_t size;
1008: struct stat stb;
1009:
1010: if (fstat(fd, &stb) < 0) {
1011: run_err("fstat: %s", strerror(errno));
1012: return (0);
1013: }
1.18 markus 1014: if (stb.st_blksize == 0)
1015: size = blksize;
1016: else
1017: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1018: stb.st_blksize;
1.1 deraadt 1019: if (bp->cnt >= size)
1020: return (bp);
1.18 markus 1021: if (bp->buf == NULL)
1022: bp->buf = xmalloc(size);
1023: else
1024: bp->buf = xrealloc(bp->buf, size);
1.81 markus 1025: memset(bp->buf, 0, size);
1.1 deraadt 1026: bp->cnt = size;
1027: return (bp);
1028: }
1029:
1030: void
1031: lostconn(signo)
1032: int signo;
1033: {
1034: if (!iamremote)
1.74 markus 1035: write(STDERR_FILENO, "lost connection\n", 16);
1036: if (signo)
1037: _exit(1);
1038: else
1039: exit(1);
1.1 deraadt 1040: }
1.4 aaron 1041:
1.76 itojun 1042: static void
1.26 markus 1043: updateprogressmeter(int ignore)
1.4 aaron 1044: {
1.9 deraadt 1045: int save_errno = errno;
1046:
1.4 aaron 1047: progressmeter(0);
1.79 stevesk 1048: signal(SIGALRM, updateprogressmeter);
1049: alarm(PROGRESSTIME);
1.9 deraadt 1050: errno = save_errno;
1.4 aaron 1051: }
1052:
1.76 itojun 1053: static int
1.56 itojun 1054: foregroundproc(void)
1.16 deraadt 1055: {
1056: static pid_t pgrp = -1;
1057: int ctty_pgrp;
1058:
1059: if (pgrp == -1)
1060: pgrp = getpgrp();
1061:
1.18 markus 1062: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1063: ctty_pgrp == pgrp));
1.16 deraadt 1064: }
1065:
1.8 deraadt 1066: void
1067: progressmeter(int flag)
1.4 aaron 1068: {
1069: static const char prefixes[] = " KMGTP";
1070: static struct timeval lastupdate;
1.11 aaron 1071: static off_t lastsize;
1.4 aaron 1072: struct timeval now, td, wait;
1073: off_t cursize, abbrevsize;
1074: double elapsed;
1075: int ratio, barlength, i, remaining;
1076: char buf[256];
1077:
1078: if (flag == -1) {
1.18 markus 1079: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1080: lastupdate = start;
1.11 aaron 1081: lastsize = 0;
1.18 markus 1082: }
1.16 deraadt 1083: if (foregroundproc() == 0)
1084: return;
1085:
1.18 markus 1086: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1087: cursize = statbytes;
1.13 aaron 1088: if (totalbytes != 0) {
1.21 markus 1089: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1090: ratio = MAX(ratio, 0);
1091: ratio = MIN(ratio, 100);
1.18 markus 1092: } else
1.13 aaron 1093: ratio = 100;
1094:
1.18 markus 1095: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1096:
1.11 aaron 1097: barlength = getttywidth() - 51;
1.4 aaron 1098: if (barlength > 0) {
1099: i = barlength * ratio / 100;
1100: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1101: "|%.*s%*s|", i,
1.78 deraadt 1102: "***************************************"
1103: "***************************************"
1104: "***************************************"
1105: "***************************************",
1.35 deraadt 1106: barlength - i, "");
1.4 aaron 1107: }
1108: i = 0;
1109: abbrevsize = cursize;
1110: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1111: i++;
1112: abbrevsize >>= 10;
1113: }
1.54 itojun 1114: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1115: (unsigned long long) abbrevsize, prefixes[i],
1116: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1117:
1118: timersub(&now, &lastupdate, &wait);
1119: if (cursize > lastsize) {
1120: lastupdate = now;
1121: lastsize = cursize;
1122: if (wait.tv_sec >= STALLTIME) {
1123: start.tv_sec += wait.tv_sec;
1124: start.tv_usec += wait.tv_usec;
1125: }
1126: wait.tv_sec = 0;
1127: }
1128: timersub(&now, &start, &td);
1.6 aaron 1129: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1130:
1.44 deraadt 1131: if (flag != 1 &&
1132: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1133: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1134: " --:-- ETA");
1.4 aaron 1135: } else if (wait.tv_sec >= STALLTIME) {
1136: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1137: " - stalled -");
1.4 aaron 1138: } else {
1.28 deraadt 1139: if (flag != 1)
1.44 deraadt 1140: remaining = (int)(totalbytes / (statbytes / elapsed) -
1141: elapsed);
1.28 deraadt 1142: else
1143: remaining = elapsed;
1144:
1.14 aaron 1145: i = remaining / 3600;
1.4 aaron 1146: if (i)
1147: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1148: "%2d:", i);
1.4 aaron 1149: else
1150: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1151: " ");
1.4 aaron 1152: i = remaining % 3600;
1153: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1154: "%02d:%02d%s", i / 60, i % 60,
1155: (flag != 1) ? " ETA" : " ");
1.4 aaron 1156: }
1.10 deraadt 1157: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1158:
1159: if (flag == -1) {
1.26 markus 1160: signal(SIGALRM, updateprogressmeter);
1.79 stevesk 1161: alarm(PROGRESSTIME);
1.4 aaron 1162: } else if (flag == 1) {
1.79 stevesk 1163: alarm(0);
1.29 deraadt 1164: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1165: statbytes = 0;
1.4 aaron 1166: }
1167: }
1168:
1.8 deraadt 1169: int
1170: getttywidth(void)
1.4 aaron 1171: {
1172: struct winsize winsize;
1173:
1174: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1175: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1176: else
1.18 markus 1177: return (80);
1.4 aaron 1178: }
![[BACK]](/icons/back.gif){kind=icon}
Return to scp.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh