Annotation of src/usr.bin/ssh/scp.c, Revision 1.49
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: /*
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"
1.49 ! markus 78: RCSID("$OpenBSD: scp.c,v 1.48 2001/01/01 14:52:49 markus Exp $");
1.1 deraadt 79:
80: #include "ssh.h"
81: #include "xmalloc.h"
82:
83: #define _PATH_CP "cp"
84:
1.11 aaron 85: /* For progressmeter() -- number of seconds before xfer considered "stalled" */
1.4 aaron 86: #define STALLTIME 5
87:
1.11 aaron 88: /* Visual statistics about files as they are transferred. */
89: void progressmeter(int);
90:
91: /* Returns width of the terminal (for progress meter calculations). */
92: int getttywidth(void);
1.35 deraadt 93: int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
1.11 aaron 94:
1.41 markus 95: /* setup arguments for the call to ssh */
96: void addargs(char *fmt, ...) __attribute__((format(printf, 1, 2)));
97:
1.11 aaron 98: /* Time a transfer started. */
1.4 aaron 99: static struct timeval start;
1.11 aaron 100:
101: /* Number of bytes of current file transferred so far. */
1.47 markus 102: volatile u_long statbytes;
1.11 aaron 103:
104: /* Total size of current file. */
1.15 markus 105: off_t totalbytes = 0;
1.11 aaron 106:
107: /* Name of current file being transferred. */
108: char *curfile;
1.4 aaron 109:
1.1 deraadt 110: /* This is set to non-zero to enable verbose mode. */
1.17 markus 111: int verbose_mode = 0;
1.1 deraadt 112:
1.6 aaron 113: /* This is set to zero if the progressmeter is not desired. */
114: int showprogress = 1;
115:
1.34 deraadt 116: /* This is the program to execute for the secured connection. ("ssh" or -S) */
117: char *ssh_program = SSH_PROGRAM;
118:
1.41 markus 119: /* This is the list of arguments that scp passes to ssh */
120: struct {
121: char **list;
122: int num;
123: int nalloc;
124: } args;
125:
1.20 markus 126: /*
127: * This function executes the given command as the specified user on the
128: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
129: * assigns the input and output file descriptors on success.
130: */
1.1 deraadt 131:
1.27 markus 132: int
1.35 deraadt 133: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
1.1 deraadt 134: {
1.18 markus 135: int pin[2], pout[2], reserved[2];
136:
137: if (verbose_mode)
1.41 markus 138: fprintf(stderr, "Executing: program %s host %s, user %s, command %s\n",
139: ssh_program, host, remuser ? remuser : "(unspecified)", cmd);
1.18 markus 140:
1.20 markus 141: /*
142: * Reserve two descriptors so that the real pipes won't get
143: * descriptors 0 and 1 because that will screw up dup2 below.
144: */
1.18 markus 145: pipe(reserved);
146:
147: /* Create a socket pair for communicating with ssh. */
148: if (pipe(pin) < 0)
149: fatal("pipe: %s", strerror(errno));
150: if (pipe(pout) < 0)
151: fatal("pipe: %s", strerror(errno));
152:
153: /* Free the reserved descriptors. */
154: close(reserved[0]);
155: close(reserved[1]);
156:
157: /* For a child to execute the command on the remote host using ssh. */
1.41 markus 158: if (fork() == 0) {
1.18 markus 159: /* Child. */
160: close(pin[1]);
161: close(pout[0]);
162: dup2(pin[0], 0);
163: dup2(pout[1], 1);
164: close(pin[0]);
165: close(pout[1]);
166:
1.41 markus 167: args.list[0] = ssh_program;
168: if (remuser != NULL)
1.42 markus 169: addargs("-l%s", remuser);
1.41 markus 170: addargs("%s", host);
171: addargs("%s", cmd);
1.18 markus 172:
1.41 markus 173: execvp(ssh_program, args.list);
1.34 deraadt 174: perror(ssh_program);
1.18 markus 175: exit(1);
176: }
177: /* Parent. Close the other side, and return the local side. */
178: close(pin[0]);
179: *fdout = pin[1];
180: close(pout[1]);
181: *fdin = pout[0];
182: return 0;
1.1 deraadt 183: }
184:
185: typedef struct {
186: int cnt;
187: char *buf;
188: } BUF;
189:
190: extern int iamremote;
191:
1.18 markus 192: BUF *allocbuf(BUF *, int, int);
193: char *colon(char *);
194: void lostconn(int);
195: void nospace(void);
196: int okname(char *);
197: void run_err(const char *,...);
198: void verifydir(char *);
1.1 deraadt 199:
200: struct passwd *pwd;
1.18 markus 201: uid_t userid;
1.1 deraadt 202: int errs, remin, remout;
203: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
204:
205: #define CMDNEEDS 64
206: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
207:
1.18 markus 208: int response(void);
209: void rsource(char *, struct stat *);
210: void sink(int, char *[]);
211: void source(int, char *[]);
212: void tolocal(int, char *[]);
213: void toremote(char *, int, char *[]);
214: void usage(void);
1.1 deraadt 215:
216: int
217: main(argc, argv)
218: int argc;
219: char *argv[];
220: {
221: int ch, fflag, tflag;
222: char *targ;
223: extern char *optarg;
224: extern int optind;
225:
1.41 markus 226: args.list = NULL;
227: addargs("ssh"); /* overwritten with ssh_program */
228: addargs("-x");
229: addargs("-oFallBackToRsh no");
230:
1.1 deraadt 231: fflag = tflag = 0;
1.49 ! markus 232: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
1.18 markus 233: switch (ch) {
234: /* User-visible flags. */
1.23 markus 235: case '4':
1.41 markus 236: case '6':
237: case 'C':
238: addargs("-%c", ch);
239: break;
240: case 'o':
241: case 'c':
242: case 'i':
1.42 markus 243: addargs("-%c%s", ch, optarg);
1.23 markus 244: break;
1.41 markus 245: case 'P':
1.42 markus 246: addargs("-p%s", optarg);
1.41 markus 247: break;
248: case 'B':
1.42 markus 249: addargs("-oBatchmode yes");
1.23 markus 250: break;
1.1 deraadt 251: case 'p':
252: pflag = 1;
253: break;
254: case 'r':
255: iamrecursive = 1;
256: break;
1.34 deraadt 257: case 'S':
1.41 markus 258: ssh_program = xstrdup(optarg);
259: break;
260: case 'v':
261: verbose_mode = 1;
262: break;
263: case 'q':
264: showprogress = 0;
1.34 deraadt 265: break;
266:
1.18 markus 267: /* Server options. */
1.1 deraadt 268: case 'd':
269: targetshouldbedirectory = 1;
270: break;
1.18 markus 271: case 'f': /* "from" */
1.1 deraadt 272: iamremote = 1;
273: fflag = 1;
274: break;
1.18 markus 275: case 't': /* "to" */
1.1 deraadt 276: iamremote = 1;
277: tflag = 1;
278: break;
279: case '?':
280: default:
281: usage();
282: }
283: argc -= optind;
284: argv += optind;
285:
286: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 287: fatal("unknown user %d", (int) userid);
1.1 deraadt 288:
1.18 markus 289: if (!isatty(STDERR_FILENO))
1.7 deraadt 290: showprogress = 0;
291:
1.1 deraadt 292: remin = STDIN_FILENO;
293: remout = STDOUT_FILENO;
294:
1.18 markus 295: if (fflag) {
296: /* Follow "protocol", send data. */
297: (void) response();
1.1 deraadt 298: source(argc, argv);
299: exit(errs != 0);
300: }
1.18 markus 301: if (tflag) {
302: /* Receive data. */
1.1 deraadt 303: sink(argc, argv);
304: exit(errs != 0);
305: }
306: if (argc < 2)
307: usage();
308: if (argc > 2)
309: targetshouldbedirectory = 1;
310:
311: remin = remout = -1;
312: /* Command to be executed on remote system using "ssh". */
1.18 markus 313: (void) sprintf(cmd, "scp%s%s%s%s", verbose_mode ? " -v" : "",
1.35 deraadt 314: iamrecursive ? " -r" : "", pflag ? " -p" : "",
315: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 316:
1.18 markus 317: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 318:
319: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
320: toremote(targ, argc, argv);
321: else {
1.18 markus 322: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 323: if (targetshouldbedirectory)
324: verifydir(argv[argc - 1]);
325: }
326: exit(errs != 0);
327: }
328:
1.23 markus 329: char *
330: cleanhostname(host)
331: char *host;
332: {
333: if (*host == '[' && host[strlen(host) - 1] == ']') {
334: host[strlen(host) - 1] = '\0';
335: return (host + 1);
336: } else
337: return host;
338: }
339:
1.1 deraadt 340: void
341: toremote(targ, argc, argv)
342: char *targ, *argv[];
343: int argc;
344: {
345: int i, len;
346: char *bp, *host, *src, *suser, *thost, *tuser;
347:
348: *targ++ = 0;
349: if (*targ == 0)
350: targ = ".";
351:
352: if ((thost = strchr(argv[argc - 1], '@'))) {
353: /* user@host */
354: *thost++ = 0;
355: tuser = argv[argc - 1];
356: if (*tuser == '\0')
357: tuser = NULL;
358: else if (!okname(tuser))
359: exit(1);
360: } else {
361: thost = argv[argc - 1];
362: tuser = NULL;
363: }
364:
365: for (i = 0; i < argc - 1; i++) {
366: src = colon(argv[i]);
1.18 markus 367: if (src) { /* remote to remote */
1.1 deraadt 368: *src++ = 0;
369: if (*src == 0)
370: src = ".";
371: host = strchr(argv[i], '@');
1.34 deraadt 372: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 373: strlen(src) + (tuser ? strlen(tuser) : 0) +
374: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 375: bp = xmalloc(len);
1.1 deraadt 376: if (host) {
377: *host++ = 0;
1.23 markus 378: host = cleanhostname(host);
1.1 deraadt 379: suser = argv[i];
380: if (*suser == '\0')
381: suser = pwd->pw_name;
382: else if (!okname(suser))
383: continue;
1.44 deraadt 384: sprintf(bp,
1.34 deraadt 385: "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'",
1.44 deraadt 386: ssh_program, verbose_mode ? " -v" : "",
387: suser, host, cmd, src,
388: tuser ? tuser : "", tuser ? "@" : "",
389: thost, targ);
1.23 markus 390: } else {
391: host = cleanhostname(argv[i]);
1.44 deraadt 392: sprintf(bp,
1.34 deraadt 393: "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'",
1.44 deraadt 394: ssh_program, verbose_mode ? " -v" : "",
395: host, cmd, src,
396: tuser ? tuser : "", tuser ? "@" : "",
397: thost, targ);
1.23 markus 398: }
1.18 markus 399: if (verbose_mode)
400: fprintf(stderr, "Executing: %s\n", bp);
401: (void) system(bp);
402: (void) xfree(bp);
403: } else { /* local to remote */
1.1 deraadt 404: if (remin == -1) {
405: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 406: bp = xmalloc(len);
407: (void) sprintf(bp, "%s -t %s", cmd, targ);
1.23 markus 408: host = cleanhostname(thost);
1.35 deraadt 409: if (do_cmd(host, tuser, bp, &remin,
410: &remout, argc) < 0)
1.18 markus 411: exit(1);
1.1 deraadt 412: if (response() < 0)
413: exit(1);
1.18 markus 414: (void) xfree(bp);
1.1 deraadt 415: }
1.18 markus 416: source(1, argv + i);
1.1 deraadt 417: }
418: }
419: }
420:
421: void
422: tolocal(argc, argv)
423: int argc;
424: char *argv[];
425: {
426: int i, len;
427: char *bp, *host, *src, *suser;
428:
429: for (i = 0; i < argc - 1; i++) {
1.18 markus 430: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 431: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 432: strlen(argv[argc - 1]) + 20;
1.1 deraadt 433: bp = xmalloc(len);
1.18 markus 434: (void) sprintf(bp, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 435: iamrecursive ? " -r" : "", pflag ? " -p" : "",
436: argv[i], argv[argc - 1]);
1.18 markus 437: if (verbose_mode)
438: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 439: if (system(bp))
440: ++errs;
1.18 markus 441: (void) xfree(bp);
1.1 deraadt 442: continue;
443: }
444: *src++ = 0;
445: if (*src == 0)
446: src = ".";
447: if ((host = strchr(argv[i], '@')) == NULL) {
448: host = argv[i];
449: suser = NULL;
450: } else {
451: *host++ = 0;
452: suser = argv[i];
453: if (*suser == '\0')
454: suser = pwd->pw_name;
455: else if (!okname(suser))
456: continue;
457: }
1.23 markus 458: host = cleanhostname(host);
1.1 deraadt 459: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 460: bp = xmalloc(len);
461: (void) sprintf(bp, "%s -f %s", cmd, src);
1.35 deraadt 462: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 463: (void) xfree(bp);
464: ++errs;
465: continue;
1.1 deraadt 466: }
1.18 markus 467: xfree(bp);
1.1 deraadt 468: sink(1, argv + argc - 1);
1.18 markus 469: (void) close(remin);
1.1 deraadt 470: remin = remout = -1;
471: }
472: }
473:
474: void
475: source(argc, argv)
476: int argc;
477: char *argv[];
478: {
479: struct stat stb;
480: static BUF buffer;
481: BUF *bp;
482: off_t i;
483: int amt, fd, haderr, indx, result;
484: char *last, *name, buf[2048];
485:
486: for (indx = 0; indx < argc; ++indx) {
1.18 markus 487: name = argv[indx];
1.11 aaron 488: statbytes = 0;
1.1 deraadt 489: if ((fd = open(name, O_RDONLY, 0)) < 0)
490: goto syserr;
491: if (fstat(fd, &stb) < 0) {
492: syserr: run_err("%s: %s", name, strerror(errno));
493: goto next;
494: }
495: switch (stb.st_mode & S_IFMT) {
496: case S_IFREG:
497: break;
498: case S_IFDIR:
499: if (iamrecursive) {
500: rsource(name, &stb);
501: goto next;
502: }
503: /* FALLTHROUGH */
504: default:
505: run_err("%s: not a regular file", name);
506: goto next;
507: }
508: if ((last = strrchr(name, '/')) == NULL)
509: last = name;
510: else
511: ++last;
1.11 aaron 512: curfile = last;
1.1 deraadt 513: if (pflag) {
514: /*
515: * Make it compatible with possible future
516: * versions expecting microseconds.
517: */
1.18 markus 518: (void) sprintf(buf, "T%lu 0 %lu 0\n",
1.47 markus 519: (u_long) stb.st_mtime,
520: (u_long) stb.st_atime);
1.29 deraadt 521: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 522: if (response() < 0)
523: goto next;
524: }
525: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.44 deraadt 526: sprintf(buf, "C%04o %lu %s\n",
1.47 markus 527: (u_int) (stb.st_mode & FILEMODEMASK),
528: (u_long) stb.st_size, last);
1.18 markus 529: if (verbose_mode) {
530: fprintf(stderr, "Sending file modes: %s", buf);
531: fflush(stderr);
532: }
1.29 deraadt 533: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 534: if (response() < 0)
535: goto next;
536: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 537: next: (void) close(fd);
1.1 deraadt 538: continue;
539: }
1.12 aaron 540: if (showprogress) {
541: totalbytes = stb.st_size;
1.6 aaron 542: progressmeter(-1);
1.12 aaron 543: }
1.1 deraadt 544: /* Keep writing after an error so that we stay sync'd up. */
545: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
546: amt = bp->cnt;
547: if (i + amt > stb.st_size)
548: amt = stb.st_size - i;
549: if (!haderr) {
1.30 deraadt 550: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 551: if (result != amt)
552: haderr = result >= 0 ? EIO : errno;
553: }
554: if (haderr)
1.29 deraadt 555: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 556: else {
1.29 deraadt 557: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 558: if (result != amt)
559: haderr = result >= 0 ? EIO : errno;
1.4 aaron 560: statbytes += result;
1.1 deraadt 561: }
562: }
1.18 markus 563: if (showprogress)
1.6 aaron 564: progressmeter(1);
1.4 aaron 565:
1.1 deraadt 566: if (close(fd) < 0 && !haderr)
567: haderr = errno;
568: if (!haderr)
1.29 deraadt 569: (void) atomicio(write, remout, "", 1);
1.1 deraadt 570: else
571: run_err("%s: %s", name, strerror(haderr));
1.18 markus 572: (void) response();
1.1 deraadt 573: }
574: }
575:
576: void
577: rsource(name, statp)
578: char *name;
579: struct stat *statp;
580: {
581: DIR *dirp;
582: struct dirent *dp;
583: char *last, *vect[1], path[1100];
584:
585: if (!(dirp = opendir(name))) {
586: run_err("%s: %s", name, strerror(errno));
587: return;
588: }
589: last = strrchr(name, '/');
590: if (last == 0)
591: last = name;
592: else
593: last++;
594: if (pflag) {
1.18 markus 595: (void) sprintf(path, "T%lu 0 %lu 0\n",
1.47 markus 596: (u_long) statp->st_mtime,
597: (u_long) statp->st_atime);
1.29 deraadt 598: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 599: if (response() < 0) {
600: closedir(dirp);
601: return;
602: }
603: }
1.18 markus 604: (void) sprintf(path, "D%04o %d %.1024s\n",
1.47 markus 605: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 606: if (verbose_mode)
607: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 608: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 609: if (response() < 0) {
610: closedir(dirp);
611: return;
612: }
613: while ((dp = readdir(dirp))) {
614: if (dp->d_ino == 0)
615: continue;
616: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
617: continue;
618: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
619: run_err("%s/%s: name too long", name, dp->d_name);
620: continue;
621: }
1.18 markus 622: (void) sprintf(path, "%s/%s", name, dp->d_name);
1.1 deraadt 623: vect[0] = path;
624: source(1, vect);
625: }
1.18 markus 626: (void) closedir(dirp);
1.29 deraadt 627: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 628: (void) response();
1.1 deraadt 629: }
630:
631: void
632: sink(argc, argv)
633: int argc;
634: char *argv[];
635: {
636: static BUF buffer;
637: struct stat stb;
1.18 markus 638: enum {
639: YES, NO, DISPLAYED
640: } wrerr;
1.1 deraadt 641: BUF *bp;
642: off_t i, j;
643: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 644: off_t size;
645: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 646: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.18 markus 647: int dummy_usec;
1.40 markus 648: struct timeval tv[2];
1.1 deraadt 649:
650: #define SCREWUP(str) { why = str; goto screwup; }
651:
652: setimes = targisdir = 0;
653: mask = umask(0);
654: if (!pflag)
1.18 markus 655: (void) umask(mask);
1.1 deraadt 656: if (argc != 1) {
657: run_err("ambiguous target");
658: exit(1);
659: }
660: targ = *argv;
661: if (targetshouldbedirectory)
662: verifydir(targ);
1.18 markus 663:
1.29 deraadt 664: (void) atomicio(write, remout, "", 1);
1.1 deraadt 665: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
666: targisdir = 1;
667: for (first = 1;; first = 0) {
668: cp = buf;
1.30 deraadt 669: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 670: return;
671: if (*cp++ == '\n')
672: SCREWUP("unexpected <newline>");
673: do {
1.30 deraadt 674: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 675: SCREWUP("lost connection");
676: *cp++ = ch;
677: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
678: *cp = 0;
679:
680: if (buf[0] == '\01' || buf[0] == '\02') {
681: if (iamremote == 0)
1.29 deraadt 682: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 683: buf + 1, strlen(buf + 1));
1.1 deraadt 684: if (buf[0] == '\02')
685: exit(1);
686: ++errs;
687: continue;
688: }
689: if (buf[0] == 'E') {
1.29 deraadt 690: (void) atomicio(write, remout, "", 1);
1.1 deraadt 691: return;
692: }
693: if (ch == '\n')
694: *--cp = 0;
695:
696: #define getnum(t) (t) = 0; \
697: while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
698: cp = buf;
699: if (*cp == 'T') {
700: setimes++;
701: cp++;
1.40 markus 702: getnum(tv[1].tv_sec);
1.1 deraadt 703: if (*cp++ != ' ')
704: SCREWUP("mtime.sec not delimited");
705: getnum(dummy_usec);
1.40 markus 706: tv[1].tv_usec = 0;
1.1 deraadt 707: if (*cp++ != ' ')
708: SCREWUP("mtime.usec not delimited");
1.40 markus 709: getnum(tv[0].tv_sec);
1.1 deraadt 710: if (*cp++ != ' ')
711: SCREWUP("atime.sec not delimited");
712: getnum(dummy_usec);
1.40 markus 713: tv[0].tv_usec = 0;
1.1 deraadt 714: if (*cp++ != '\0')
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:
1.18 markus 742: for (size = 0; *cp >= '0' && *cp <= '9';)
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;
752: if (need > cursize)
1.18 markus 753: namebuf = xmalloc(need);
754: (void) sprintf(namebuf, "%s%s%s", targ,
1.35 deraadt 755: *targ ? "/" : "", cp);
1.1 deraadt 756: np = namebuf;
757: } else
758: np = targ;
1.12 aaron 759: curfile = cp;
1.1 deraadt 760: exists = stat(np, &stb) == 0;
761: if (buf[0] == 'D') {
762: int mod_flag = pflag;
763: if (exists) {
764: if (!S_ISDIR(stb.st_mode)) {
765: errno = ENOTDIR;
766: goto bad;
767: }
768: if (pflag)
1.18 markus 769: (void) chmod(np, mode);
1.1 deraadt 770: } else {
1.18 markus 771: /* Handle copying from a read-only
772: directory */
1.1 deraadt 773: mod_flag = 1;
774: if (mkdir(np, mode | S_IRWXU) < 0)
775: goto bad;
776: }
777: vect[0] = np;
778: sink(1, vect);
779: if (setimes) {
780: setimes = 0;
1.40 markus 781: if (utimes(np, tv) < 0)
1.18 markus 782: run_err("%s: set times: %s",
783: np, strerror(errno));
1.1 deraadt 784: }
785: if (mod_flag)
1.18 markus 786: (void) chmod(np, mode);
1.1 deraadt 787: continue;
788: }
789: omode = mode;
790: mode |= S_IWRITE;
1.18 markus 791: if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) {
1.1 deraadt 792: bad: run_err("%s: %s", np, strerror(errno));
793: continue;
794: }
1.29 deraadt 795: (void) atomicio(write, remout, "", 1);
1.1 deraadt 796: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 797: (void) close(ofd);
1.1 deraadt 798: continue;
799: }
800: cp = bp->buf;
801: wrerr = NO;
1.7 deraadt 802:
803: if (showprogress) {
804: totalbytes = size;
805: progressmeter(-1);
806: }
1.12 aaron 807: statbytes = 0;
1.1 deraadt 808: for (count = i = 0; i < size; i += 4096) {
809: amt = 4096;
810: if (i + amt > size)
811: amt = size - i;
812: count += amt;
813: do {
1.43 markus 814: j = read(remin, cp, amt);
815: if (j == -1 && (errno == EINTR || errno == EAGAIN)) {
816: continue;
817: } else if (j <= 0) {
1.1 deraadt 818: run_err("%s", j ? strerror(errno) :
1.18 markus 819: "dropped connection");
1.1 deraadt 820: exit(1);
821: }
822: amt -= j;
823: cp += j;
1.18 markus 824: statbytes += j;
1.1 deraadt 825: } while (amt > 0);
826: if (count == bp->cnt) {
827: /* Keep reading so we stay sync'd up. */
828: if (wrerr == NO) {
1.30 deraadt 829: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 830: if (j != count) {
831: wrerr = YES;
1.18 markus 832: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 833: }
834: }
835: count = 0;
836: cp = bp->buf;
837: }
838: }
1.7 deraadt 839: if (showprogress)
840: progressmeter(1);
1.1 deraadt 841: if (count != 0 && wrerr == NO &&
1.30 deraadt 842: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 843: wrerr = YES;
1.18 markus 844: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 845: }
846: #if 0
847: if (ftruncate(ofd, size)) {
848: run_err("%s: truncate: %s", np, strerror(errno));
849: wrerr = DISPLAYED;
850: }
851: #endif
852: if (pflag) {
853: if (exists || omode != mode)
854: if (fchmod(ofd, omode))
855: run_err("%s: set mode: %s",
1.18 markus 856: np, strerror(errno));
1.1 deraadt 857: } else {
858: if (!exists && omode != mode)
859: if (fchmod(ofd, omode & ~mask))
860: run_err("%s: set mode: %s",
1.18 markus 861: np, strerror(errno));
1.1 deraadt 862: }
1.33 provos 863: if (close(ofd) == -1) {
864: wrerr = YES;
865: wrerrno = errno;
866: }
1.18 markus 867: (void) response();
1.1 deraadt 868: if (setimes && wrerr == NO) {
869: setimes = 0;
1.40 markus 870: if (utimes(np, tv) < 0) {
1.1 deraadt 871: run_err("%s: set times: %s",
1.18 markus 872: np, strerror(errno));
1.1 deraadt 873: wrerr = DISPLAYED;
874: }
875: }
1.18 markus 876: switch (wrerr) {
1.1 deraadt 877: case YES:
878: run_err("%s: %s", np, strerror(wrerrno));
879: break;
880: case NO:
1.29 deraadt 881: (void) atomicio(write, remout, "", 1);
1.1 deraadt 882: break;
883: case DISPLAYED:
884: break;
885: }
886: }
887: screwup:
888: run_err("protocol error: %s", why);
889: exit(1);
890: }
891:
892: int
893: response()
894: {
895: char ch, *cp, resp, rbuf[2048];
896:
1.30 deraadt 897: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 898: lostconn(0);
899:
900: cp = rbuf;
1.18 markus 901: switch (resp) {
902: case 0: /* ok */
1.1 deraadt 903: return (0);
904: default:
905: *cp++ = resp;
906: /* FALLTHROUGH */
1.18 markus 907: case 1: /* error, followed by error msg */
908: case 2: /* fatal error, "" */
1.1 deraadt 909: do {
1.30 deraadt 910: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 911: lostconn(0);
912: *cp++ = ch;
913: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
914:
915: if (!iamremote)
1.29 deraadt 916: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 917: ++errs;
918: if (resp == 1)
919: return (-1);
920: exit(1);
921: }
922: /* NOTREACHED */
923: }
924:
925: void
926: usage()
927: {
1.34 deraadt 928: (void) fprintf(stderr, "usage: scp "
929: "[-pqrvC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2; or:\n"
930: " scp [options] f1 ... fn directory\n");
1.1 deraadt 931: exit(1);
932: }
933:
934: void
1.18 markus 935: run_err(const char *fmt,...)
1.1 deraadt 936: {
937: static FILE *fp;
938: va_list ap;
939: va_start(ap, fmt);
940:
941: ++errs;
942: if (fp == NULL && !(fp = fdopen(remout, "w")))
943: return;
1.18 markus 944: (void) fprintf(fp, "%c", 0x01);
945: (void) fprintf(fp, "scp: ");
946: (void) vfprintf(fp, fmt, ap);
947: (void) fprintf(fp, "\n");
948: (void) fflush(fp);
949:
950: if (!iamremote) {
951: vfprintf(stderr, fmt, ap);
952: fprintf(stderr, "\n");
953: }
1.1 deraadt 954: va_end(ap);
955: }
956:
957: char *
958: colon(cp)
959: char *cp;
960: {
1.23 markus 961: int flag = 0;
962:
1.1 deraadt 963: if (*cp == ':') /* Leading colon is part of file name. */
964: return (0);
1.23 markus 965: if (*cp == '[')
966: flag = 1;
1.1 deraadt 967:
968: for (; *cp; ++cp) {
1.23 markus 969: if (*cp == '@' && *(cp+1) == '[')
970: flag = 1;
971: if (*cp == ']' && *(cp+1) == ':' && flag)
972: return (cp+1);
973: if (*cp == ':' && !flag)
1.1 deraadt 974: return (cp);
975: if (*cp == '/')
976: return (0);
977: }
978: return (0);
979: }
980:
981: void
982: verifydir(cp)
983: char *cp;
984: {
985: struct stat stb;
986:
987: if (!stat(cp, &stb)) {
988: if (S_ISDIR(stb.st_mode))
989: return;
990: errno = ENOTDIR;
991: }
992: run_err("%s: %s", cp, strerror(errno));
993: exit(1);
994: }
995:
996: int
997: okname(cp0)
998: char *cp0;
999: {
1000: int c;
1001: char *cp;
1002:
1003: cp = cp0;
1004: do {
1005: c = *cp;
1006: if (c & 0200)
1007: goto bad;
1.46 markus 1008: if (!isalpha(c) && !isdigit(c) &&
1009: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 1010: goto bad;
1011: } while (*++cp);
1012: return (1);
1013:
1.25 markus 1014: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1015: return (0);
1016: }
1017:
1018: BUF *
1019: allocbuf(bp, fd, blksize)
1020: BUF *bp;
1021: int fd, blksize;
1022: {
1023: size_t size;
1024: struct stat stb;
1025:
1026: if (fstat(fd, &stb) < 0) {
1027: run_err("fstat: %s", strerror(errno));
1028: return (0);
1029: }
1.18 markus 1030: if (stb.st_blksize == 0)
1031: size = blksize;
1032: else
1033: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1034: stb.st_blksize;
1.1 deraadt 1035: if (bp->cnt >= size)
1036: return (bp);
1.18 markus 1037: if (bp->buf == NULL)
1038: bp->buf = xmalloc(size);
1039: else
1040: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1041: bp->cnt = size;
1042: return (bp);
1043: }
1044:
1045: void
1046: lostconn(signo)
1047: int signo;
1048: {
1049: if (!iamremote)
1050: fprintf(stderr, "lost connection\n");
1051: exit(1);
1052: }
1.4 aaron 1053:
1.10 deraadt 1054:
1.8 deraadt 1055: void
1056: alarmtimer(int wait)
1.4 aaron 1057: {
1.18 markus 1058: struct itimerval itv;
1.4 aaron 1059:
1.18 markus 1060: itv.it_value.tv_sec = wait;
1061: itv.it_value.tv_usec = 0;
1062: itv.it_interval = itv.it_value;
1063: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1064: }
1065:
1.8 deraadt 1066: void
1.26 markus 1067: updateprogressmeter(int ignore)
1.4 aaron 1068: {
1.9 deraadt 1069: int save_errno = errno;
1070:
1.4 aaron 1071: progressmeter(0);
1.9 deraadt 1072: errno = save_errno;
1.4 aaron 1073: }
1074:
1.16 deraadt 1075: int
1076: foregroundproc()
1077: {
1078: static pid_t pgrp = -1;
1079: int ctty_pgrp;
1080:
1081: if (pgrp == -1)
1082: pgrp = getpgrp();
1083:
1.18 markus 1084: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1085: ctty_pgrp == pgrp));
1.16 deraadt 1086: }
1087:
1.8 deraadt 1088: void
1089: progressmeter(int flag)
1.4 aaron 1090: {
1091: static const char prefixes[] = " KMGTP";
1092: static struct timeval lastupdate;
1.11 aaron 1093: static off_t lastsize;
1.4 aaron 1094: struct timeval now, td, wait;
1095: off_t cursize, abbrevsize;
1096: double elapsed;
1097: int ratio, barlength, i, remaining;
1098: char buf[256];
1099:
1100: if (flag == -1) {
1.18 markus 1101: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1102: lastupdate = start;
1.11 aaron 1103: lastsize = 0;
1.18 markus 1104: }
1.16 deraadt 1105: if (foregroundproc() == 0)
1106: return;
1107:
1.18 markus 1108: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1109: cursize = statbytes;
1.13 aaron 1110: if (totalbytes != 0) {
1.21 markus 1111: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1112: ratio = MAX(ratio, 0);
1113: ratio = MIN(ratio, 100);
1.18 markus 1114: } else
1.13 aaron 1115: ratio = 100;
1116:
1.18 markus 1117: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1118:
1.11 aaron 1119: barlength = getttywidth() - 51;
1.4 aaron 1120: if (barlength > 0) {
1121: i = barlength * ratio / 100;
1122: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1123: "|%.*s%*s|", i,
1124: "*****************************************************************************"
1125: "*****************************************************************************",
1126: barlength - i, "");
1.4 aaron 1127: }
1128: i = 0;
1129: abbrevsize = cursize;
1130: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1131: i++;
1132: abbrevsize >>= 10;
1133: }
1134: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ",
1.44 deraadt 1135: (quad_t) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1136:
1137: timersub(&now, &lastupdate, &wait);
1138: if (cursize > lastsize) {
1139: lastupdate = now;
1140: lastsize = cursize;
1141: if (wait.tv_sec >= STALLTIME) {
1142: start.tv_sec += wait.tv_sec;
1143: start.tv_usec += wait.tv_usec;
1144: }
1145: wait.tv_sec = 0;
1146: }
1147: timersub(&now, &start, &td);
1.6 aaron 1148: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1149:
1.44 deraadt 1150: if (flag != 1 &&
1151: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1152: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1153: " --:-- ETA");
1.4 aaron 1154: } else if (wait.tv_sec >= STALLTIME) {
1155: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1156: " - stalled -");
1.4 aaron 1157: } else {
1.28 deraadt 1158: if (flag != 1)
1.44 deraadt 1159: remaining = (int)(totalbytes / (statbytes / elapsed) -
1160: elapsed);
1.28 deraadt 1161: else
1162: remaining = elapsed;
1163:
1.14 aaron 1164: i = remaining / 3600;
1.4 aaron 1165: if (i)
1166: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1167: "%2d:", i);
1.4 aaron 1168: else
1169: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1170: " ");
1.4 aaron 1171: i = remaining % 3600;
1172: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1173: "%02d:%02d%s", i / 60, i % 60,
1174: (flag != 1) ? " ETA" : " ");
1.4 aaron 1175: }
1.10 deraadt 1176: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1177:
1178: if (flag == -1) {
1.26 markus 1179: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1180: alarmtimer(1);
1181: } else if (flag == 1) {
1.10 deraadt 1182: alarmtimer(0);
1.29 deraadt 1183: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1184: statbytes = 0;
1.4 aaron 1185: }
1186: }
1187:
1.8 deraadt 1188: int
1189: getttywidth(void)
1.4 aaron 1190: {
1191: struct winsize winsize;
1192:
1193: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1194: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1195: else
1.18 markus 1196: return (80);
1.41 markus 1197: }
1198:
1199: void
1200: addargs(char *fmt, ...)
1201: {
1202: va_list ap;
1203: char buf[1024];
1204:
1205: va_start(ap, fmt);
1206: vsnprintf(buf, sizeof(buf), fmt, ap);
1207: va_end(ap);
1208:
1209: if (args.list == NULL) {
1210: args.nalloc = 32;
1211: args.num = 0;
1212: args.list = xmalloc(args.nalloc * sizeof(char *));
1213: } else if (args.num+2 >= args.nalloc) {
1214: args.nalloc *= 2;
1215: args.list = xrealloc(args.list, args.nalloc * sizeof(char *));
1216: }
1217: args.list[args.num++] = xstrdup(buf);
1218: args.list[args.num] = NULL;
1.4 aaron 1219: }
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