Annotation of src/usr.bin/ssh/scp.c, Revision 1.42
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"
1.42 ! markus 78: RCSID("$OpenBSD: scp.c,v 1.41 2000/10/11 20:03:27 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. */
102: volatile unsigned long statbytes;
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:
113: /* This is set to non-zero if compression is desired. */
114: int compress = 0;
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) */
120: char *ssh_program = SSH_PROGRAM;
121:
1.41 markus 122: /* This is the list of arguments that scp passes to ssh */
123: struct {
124: char **list;
125: int num;
126: int nalloc;
127: } args;
128:
1.20 markus 129: /*
130: * This function executes the given command as the specified user on the
131: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
132: * assigns the input and output file descriptors on success.
133: */
1.1 deraadt 134:
1.27 markus 135: int
1.35 deraadt 136: do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
1.1 deraadt 137: {
1.18 markus 138: int pin[2], pout[2], reserved[2];
139:
140: if (verbose_mode)
1.41 markus 141: fprintf(stderr, "Executing: program %s host %s, user %s, command %s\n",
142: ssh_program, host, remuser ? remuser : "(unspecified)", cmd);
1.18 markus 143:
1.20 markus 144: /*
145: * Reserve two descriptors so that the real pipes won't get
146: * descriptors 0 and 1 because that will screw up dup2 below.
147: */
1.18 markus 148: pipe(reserved);
149:
150: /* Create a socket pair for communicating with ssh. */
151: if (pipe(pin) < 0)
152: fatal("pipe: %s", strerror(errno));
153: if (pipe(pout) < 0)
154: fatal("pipe: %s", strerror(errno));
155:
156: /* Free the reserved descriptors. */
157: close(reserved[0]);
158: close(reserved[1]);
159:
160: /* For a child to execute the command on the remote host using ssh. */
1.41 markus 161: if (fork() == 0) {
1.18 markus 162: /* Child. */
163: close(pin[1]);
164: close(pout[0]);
165: dup2(pin[0], 0);
166: dup2(pout[1], 1);
167: close(pin[0]);
168: close(pout[1]);
169:
1.41 markus 170: args.list[0] = ssh_program;
171: if (remuser != NULL)
1.42 ! markus 172: addargs("-l%s", remuser);
1.41 markus 173: addargs("%s", host);
174: addargs("%s", cmd);
1.18 markus 175:
1.41 markus 176: execvp(ssh_program, args.list);
1.34 deraadt 177: perror(ssh_program);
1.18 markus 178: exit(1);
179: }
180: /* Parent. Close the other side, and return the local side. */
181: close(pin[0]);
182: *fdout = pin[1];
183: close(pout[1]);
184: *fdin = pout[0];
185: return 0;
186: }
1.1 deraadt 187:
1.27 markus 188: void
1.18 markus 189: fatal(const char *fmt,...)
190: {
191: va_list ap;
192: char buf[1024];
193:
194: va_start(ap, fmt);
195: vsnprintf(buf, sizeof(buf), fmt, ap);
196: va_end(ap);
197: fprintf(stderr, "%s\n", buf);
198: exit(255);
1.1 deraadt 199: }
200:
201: typedef struct {
202: int cnt;
203: char *buf;
204: } BUF;
205:
206: extern int iamremote;
207:
1.18 markus 208: BUF *allocbuf(BUF *, int, int);
209: char *colon(char *);
210: void lostconn(int);
211: void nospace(void);
212: int okname(char *);
213: void run_err(const char *,...);
214: void verifydir(char *);
1.1 deraadt 215:
216: struct passwd *pwd;
1.18 markus 217: uid_t userid;
1.1 deraadt 218: int errs, remin, remout;
219: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
220:
221: #define CMDNEEDS 64
222: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
223:
1.18 markus 224: int response(void);
225: void rsource(char *, struct stat *);
226: void sink(int, char *[]);
227: void source(int, char *[]);
228: void tolocal(int, char *[]);
229: void toremote(char *, int, char *[]);
230: void usage(void);
1.1 deraadt 231:
232: int
233: main(argc, argv)
234: int argc;
235: char *argv[];
236: {
237: int ch, fflag, tflag;
238: char *targ;
239: extern char *optarg;
240: extern int optind;
241:
1.41 markus 242: args.list = NULL;
243: addargs("ssh"); /* overwritten with ssh_program */
244: addargs("-x");
245: addargs("-oFallBackToRsh no");
246:
1.1 deraadt 247: fflag = tflag = 0;
1.41 markus 248: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != EOF)
1.18 markus 249: switch (ch) {
250: /* User-visible flags. */
1.23 markus 251: case '4':
1.41 markus 252: case '6':
253: case 'C':
254: addargs("-%c", ch);
255: break;
256: case 'o':
257: case 'c':
258: case 'i':
1.42 ! markus 259: addargs("-%c%s", ch, optarg);
1.23 markus 260: break;
1.41 markus 261: case 'P':
1.42 ! markus 262: addargs("-p%s", optarg);
1.41 markus 263: break;
264: case 'B':
1.42 ! markus 265: addargs("-oBatchmode yes");
1.23 markus 266: break;
1.1 deraadt 267: case 'p':
268: pflag = 1;
269: break;
270: case 'r':
271: iamrecursive = 1;
272: break;
1.34 deraadt 273: case 'S':
1.41 markus 274: ssh_program = xstrdup(optarg);
275: break;
276: case 'v':
277: verbose_mode = 1;
278: break;
279: case 'q':
280: showprogress = 0;
1.34 deraadt 281: break;
282:
1.18 markus 283: /* Server options. */
1.1 deraadt 284: case 'd':
285: targetshouldbedirectory = 1;
286: break;
1.18 markus 287: case 'f': /* "from" */
1.1 deraadt 288: iamremote = 1;
289: fflag = 1;
290: break;
1.18 markus 291: case 't': /* "to" */
1.1 deraadt 292: iamremote = 1;
293: tflag = 1;
294: break;
295: case '?':
296: default:
297: usage();
298: }
299: argc -= optind;
300: argv += optind;
301:
302: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.18 markus 303: fatal("unknown user %d", (int) userid);
1.1 deraadt 304:
1.18 markus 305: if (!isatty(STDERR_FILENO))
1.7 deraadt 306: showprogress = 0;
307:
1.1 deraadt 308: remin = STDIN_FILENO;
309: remout = STDOUT_FILENO;
310:
1.18 markus 311: if (fflag) {
312: /* Follow "protocol", send data. */
313: (void) response();
1.1 deraadt 314: source(argc, argv);
315: exit(errs != 0);
316: }
1.18 markus 317: if (tflag) {
318: /* Receive data. */
1.1 deraadt 319: sink(argc, argv);
320: exit(errs != 0);
321: }
322: if (argc < 2)
323: usage();
324: if (argc > 2)
325: targetshouldbedirectory = 1;
326:
327: remin = remout = -1;
328: /* Command to be executed on remote system using "ssh". */
1.18 markus 329: (void) sprintf(cmd, "scp%s%s%s%s", verbose_mode ? " -v" : "",
1.35 deraadt 330: iamrecursive ? " -r" : "", pflag ? " -p" : "",
331: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 332:
1.18 markus 333: (void) signal(SIGPIPE, lostconn);
1.1 deraadt 334:
335: if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
336: toremote(targ, argc, argv);
337: else {
1.18 markus 338: tolocal(argc, argv); /* Dest is local host. */
1.1 deraadt 339: if (targetshouldbedirectory)
340: verifydir(argv[argc - 1]);
341: }
342: exit(errs != 0);
343: }
344:
1.23 markus 345: char *
346: cleanhostname(host)
347: char *host;
348: {
349: if (*host == '[' && host[strlen(host) - 1] == ']') {
350: host[strlen(host) - 1] = '\0';
351: return (host + 1);
352: } else
353: return host;
354: }
355:
1.1 deraadt 356: void
357: toremote(targ, argc, argv)
358: char *targ, *argv[];
359: int argc;
360: {
361: int i, len;
362: char *bp, *host, *src, *suser, *thost, *tuser;
363:
364: *targ++ = 0;
365: if (*targ == 0)
366: targ = ".";
367:
368: if ((thost = strchr(argv[argc - 1], '@'))) {
369: /* user@host */
370: *thost++ = 0;
371: tuser = argv[argc - 1];
372: if (*tuser == '\0')
373: tuser = NULL;
374: else if (!okname(tuser))
375: exit(1);
376: } else {
377: thost = argv[argc - 1];
378: tuser = NULL;
379: }
380:
381: for (i = 0; i < argc - 1; i++) {
382: src = colon(argv[i]);
1.18 markus 383: if (src) { /* remote to remote */
1.1 deraadt 384: *src++ = 0;
385: if (*src == 0)
386: src = ".";
387: host = strchr(argv[i], '@');
1.34 deraadt 388: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 389: strlen(src) + (tuser ? strlen(tuser) : 0) +
390: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 391: bp = xmalloc(len);
1.1 deraadt 392: if (host) {
393: *host++ = 0;
1.23 markus 394: host = cleanhostname(host);
1.1 deraadt 395: suser = argv[i];
396: if (*suser == '\0')
397: suser = pwd->pw_name;
398: else if (!okname(suser))
399: continue;
1.18 markus 400: (void) sprintf(bp,
1.34 deraadt 401: "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'",
402: ssh_program, verbose_mode ? " -v" : "",
403: suser, host, cmd, src,
404: tuser ? tuser : "", tuser ? "@" : "",
405: thost, targ);
1.23 markus 406: } else {
407: host = cleanhostname(argv[i]);
1.18 markus 408: (void) sprintf(bp,
1.34 deraadt 409: "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'",
410: ssh_program, verbose_mode ? " -v" : "",
411: host, cmd, src,
412: tuser ? tuser : "", tuser ? "@" : "",
413: thost, targ);
1.23 markus 414: }
1.18 markus 415: if (verbose_mode)
416: fprintf(stderr, "Executing: %s\n", bp);
417: (void) system(bp);
418: (void) xfree(bp);
419: } else { /* local to remote */
1.1 deraadt 420: if (remin == -1) {
421: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 422: bp = xmalloc(len);
423: (void) sprintf(bp, "%s -t %s", cmd, targ);
1.23 markus 424: host = cleanhostname(thost);
1.35 deraadt 425: if (do_cmd(host, tuser, bp, &remin,
426: &remout, argc) < 0)
1.18 markus 427: exit(1);
1.1 deraadt 428: if (response() < 0)
429: exit(1);
1.18 markus 430: (void) xfree(bp);
1.1 deraadt 431: }
1.18 markus 432: source(1, argv + i);
1.1 deraadt 433: }
434: }
435: }
436:
437: void
438: tolocal(argc, argv)
439: int argc;
440: char *argv[];
441: {
442: int i, len;
443: char *bp, *host, *src, *suser;
444:
445: for (i = 0; i < argc - 1; i++) {
1.18 markus 446: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 447: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 448: strlen(argv[argc - 1]) + 20;
1.1 deraadt 449: bp = xmalloc(len);
1.18 markus 450: (void) sprintf(bp, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 451: iamrecursive ? " -r" : "", pflag ? " -p" : "",
452: argv[i], argv[argc - 1]);
1.18 markus 453: if (verbose_mode)
454: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 455: if (system(bp))
456: ++errs;
1.18 markus 457: (void) xfree(bp);
1.1 deraadt 458: continue;
459: }
460: *src++ = 0;
461: if (*src == 0)
462: src = ".";
463: if ((host = strchr(argv[i], '@')) == NULL) {
464: host = argv[i];
465: suser = NULL;
466: } else {
467: *host++ = 0;
468: suser = argv[i];
469: if (*suser == '\0')
470: suser = pwd->pw_name;
471: else if (!okname(suser))
472: continue;
473: }
1.23 markus 474: host = cleanhostname(host);
1.1 deraadt 475: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 476: bp = xmalloc(len);
477: (void) sprintf(bp, "%s -f %s", cmd, src);
1.35 deraadt 478: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 479: (void) xfree(bp);
480: ++errs;
481: continue;
1.1 deraadt 482: }
1.18 markus 483: xfree(bp);
1.1 deraadt 484: sink(1, argv + argc - 1);
1.18 markus 485: (void) close(remin);
1.1 deraadt 486: remin = remout = -1;
487: }
488: }
489:
490: void
491: source(argc, argv)
492: int argc;
493: char *argv[];
494: {
495: struct stat stb;
496: static BUF buffer;
497: BUF *bp;
498: off_t i;
499: int amt, fd, haderr, indx, result;
500: char *last, *name, buf[2048];
501:
502: for (indx = 0; indx < argc; ++indx) {
1.18 markus 503: name = argv[indx];
1.11 aaron 504: statbytes = 0;
1.1 deraadt 505: if ((fd = open(name, O_RDONLY, 0)) < 0)
506: goto syserr;
507: if (fstat(fd, &stb) < 0) {
508: syserr: run_err("%s: %s", name, strerror(errno));
509: goto next;
510: }
511: switch (stb.st_mode & S_IFMT) {
512: case S_IFREG:
513: break;
514: case S_IFDIR:
515: if (iamrecursive) {
516: rsource(name, &stb);
517: goto next;
518: }
519: /* FALLTHROUGH */
520: default:
521: run_err("%s: not a regular file", name);
522: goto next;
523: }
524: if ((last = strrchr(name, '/')) == NULL)
525: last = name;
526: else
527: ++last;
1.11 aaron 528: curfile = last;
1.1 deraadt 529: if (pflag) {
530: /*
531: * Make it compatible with possible future
532: * versions expecting microseconds.
533: */
1.18 markus 534: (void) sprintf(buf, "T%lu 0 %lu 0\n",
1.35 deraadt 535: (unsigned long) stb.st_mtime,
536: (unsigned long) stb.st_atime);
1.29 deraadt 537: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 538: if (response() < 0)
539: goto next;
540: }
541: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.18 markus 542: (void) sprintf(buf, "C%04o %lu %s\n",
543: (unsigned int) (stb.st_mode & FILEMODEMASK),
544: (unsigned long) stb.st_size,
545: last);
546: if (verbose_mode) {
547: fprintf(stderr, "Sending file modes: %s", buf);
548: fflush(stderr);
549: }
1.29 deraadt 550: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 551: if (response() < 0)
552: goto next;
553: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 554: next: (void) close(fd);
1.1 deraadt 555: continue;
556: }
1.12 aaron 557: if (showprogress) {
558: totalbytes = stb.st_size;
1.6 aaron 559: progressmeter(-1);
1.12 aaron 560: }
1.1 deraadt 561: /* Keep writing after an error so that we stay sync'd up. */
562: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
563: amt = bp->cnt;
564: if (i + amt > stb.st_size)
565: amt = stb.st_size - i;
566: if (!haderr) {
1.30 deraadt 567: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 568: if (result != amt)
569: haderr = result >= 0 ? EIO : errno;
570: }
571: if (haderr)
1.29 deraadt 572: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 573: else {
1.29 deraadt 574: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 575: if (result != amt)
576: haderr = result >= 0 ? EIO : errno;
1.4 aaron 577: statbytes += result;
1.1 deraadt 578: }
579: }
1.18 markus 580: if (showprogress)
1.6 aaron 581: progressmeter(1);
1.4 aaron 582:
1.1 deraadt 583: if (close(fd) < 0 && !haderr)
584: haderr = errno;
585: if (!haderr)
1.29 deraadt 586: (void) atomicio(write, remout, "", 1);
1.1 deraadt 587: else
588: run_err("%s: %s", name, strerror(haderr));
1.18 markus 589: (void) response();
1.1 deraadt 590: }
591: }
592:
593: void
594: rsource(name, statp)
595: char *name;
596: struct stat *statp;
597: {
598: DIR *dirp;
599: struct dirent *dp;
600: char *last, *vect[1], path[1100];
601:
602: if (!(dirp = opendir(name))) {
603: run_err("%s: %s", name, strerror(errno));
604: return;
605: }
606: last = strrchr(name, '/');
607: if (last == 0)
608: last = name;
609: else
610: last++;
611: if (pflag) {
1.18 markus 612: (void) sprintf(path, "T%lu 0 %lu 0\n",
1.35 deraadt 613: (unsigned long) statp->st_mtime,
614: (unsigned long) statp->st_atime);
1.29 deraadt 615: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 616: if (response() < 0) {
617: closedir(dirp);
618: return;
619: }
620: }
1.18 markus 621: (void) sprintf(path, "D%04o %d %.1024s\n",
1.35 deraadt 622: (unsigned int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 623: if (verbose_mode)
624: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 625: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 626: if (response() < 0) {
627: closedir(dirp);
628: return;
629: }
630: while ((dp = readdir(dirp))) {
631: if (dp->d_ino == 0)
632: continue;
633: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
634: continue;
635: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
636: run_err("%s/%s: name too long", name, dp->d_name);
637: continue;
638: }
1.18 markus 639: (void) sprintf(path, "%s/%s", name, dp->d_name);
1.1 deraadt 640: vect[0] = path;
641: source(1, vect);
642: }
1.18 markus 643: (void) closedir(dirp);
1.29 deraadt 644: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 645: (void) response();
1.1 deraadt 646: }
647:
648: void
649: sink(argc, argv)
650: int argc;
651: char *argv[];
652: {
653: static BUF buffer;
654: struct stat stb;
1.18 markus 655: enum {
656: YES, NO, DISPLAYED
657: } wrerr;
1.1 deraadt 658: BUF *bp;
659: off_t i, j;
660: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 661: off_t size;
662: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 663: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.18 markus 664: int dummy_usec;
1.40 markus 665: struct timeval tv[2];
1.1 deraadt 666:
667: #define SCREWUP(str) { why = str; goto screwup; }
668:
669: setimes = targisdir = 0;
670: mask = umask(0);
671: if (!pflag)
1.18 markus 672: (void) umask(mask);
1.1 deraadt 673: if (argc != 1) {
674: run_err("ambiguous target");
675: exit(1);
676: }
677: targ = *argv;
678: if (targetshouldbedirectory)
679: verifydir(targ);
1.18 markus 680:
1.29 deraadt 681: (void) atomicio(write, remout, "", 1);
1.1 deraadt 682: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
683: targisdir = 1;
684: for (first = 1;; first = 0) {
685: cp = buf;
1.30 deraadt 686: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 687: return;
688: if (*cp++ == '\n')
689: SCREWUP("unexpected <newline>");
690: do {
1.30 deraadt 691: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 692: SCREWUP("lost connection");
693: *cp++ = ch;
694: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
695: *cp = 0;
696:
697: if (buf[0] == '\01' || buf[0] == '\02') {
698: if (iamremote == 0)
1.29 deraadt 699: (void) atomicio(write, STDERR_FILENO,
1.18 markus 700: buf + 1, strlen(buf + 1));
1.1 deraadt 701: if (buf[0] == '\02')
702: exit(1);
703: ++errs;
704: continue;
705: }
706: if (buf[0] == 'E') {
1.29 deraadt 707: (void) atomicio(write, remout, "", 1);
1.1 deraadt 708: return;
709: }
710: if (ch == '\n')
711: *--cp = 0;
712:
713: #define getnum(t) (t) = 0; \
714: while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
715: cp = buf;
716: if (*cp == 'T') {
717: setimes++;
718: cp++;
1.40 markus 719: getnum(tv[1].tv_sec);
1.1 deraadt 720: if (*cp++ != ' ')
721: SCREWUP("mtime.sec not delimited");
722: getnum(dummy_usec);
1.40 markus 723: tv[1].tv_usec = 0;
1.1 deraadt 724: if (*cp++ != ' ')
725: SCREWUP("mtime.usec not delimited");
1.40 markus 726: getnum(tv[0].tv_sec);
1.1 deraadt 727: if (*cp++ != ' ')
728: SCREWUP("atime.sec not delimited");
729: getnum(dummy_usec);
1.40 markus 730: tv[0].tv_usec = 0;
1.1 deraadt 731: if (*cp++ != '\0')
732: SCREWUP("atime.usec not delimited");
1.29 deraadt 733: (void) atomicio(write, remout, "", 1);
1.1 deraadt 734: continue;
735: }
736: if (*cp != 'C' && *cp != 'D') {
737: /*
738: * Check for the case "rcp remote:foo\* local:bar".
739: * In this case, the line "No match." can be returned
740: * by the shell before the rcp command on the remote is
741: * executed so the ^Aerror_message convention isn't
742: * followed.
743: */
744: if (first) {
745: run_err("%s", cp);
746: exit(1);
747: }
748: SCREWUP("expected control record");
749: }
750: mode = 0;
751: for (++cp; cp < buf + 5; cp++) {
752: if (*cp < '0' || *cp > '7')
753: SCREWUP("bad mode");
754: mode = (mode << 3) | (*cp - '0');
755: }
756: if (*cp++ != ' ')
757: SCREWUP("mode not delimited");
758:
1.18 markus 759: for (size = 0; *cp >= '0' && *cp <= '9';)
1.1 deraadt 760: size = size * 10 + (*cp++ - '0');
761: if (*cp++ != ' ')
762: SCREWUP("size not delimited");
763: if (targisdir) {
764: static char *namebuf;
765: static int cursize;
766: size_t need;
767:
768: need = strlen(targ) + strlen(cp) + 250;
769: if (need > cursize)
1.18 markus 770: namebuf = xmalloc(need);
771: (void) sprintf(namebuf, "%s%s%s", targ,
1.35 deraadt 772: *targ ? "/" : "", cp);
1.1 deraadt 773: np = namebuf;
774: } else
775: np = targ;
1.12 aaron 776: curfile = cp;
1.1 deraadt 777: exists = stat(np, &stb) == 0;
778: if (buf[0] == 'D') {
779: int mod_flag = pflag;
780: if (exists) {
781: if (!S_ISDIR(stb.st_mode)) {
782: errno = ENOTDIR;
783: goto bad;
784: }
785: if (pflag)
1.18 markus 786: (void) chmod(np, mode);
1.1 deraadt 787: } else {
1.18 markus 788: /* Handle copying from a read-only
789: directory */
1.1 deraadt 790: mod_flag = 1;
791: if (mkdir(np, mode | S_IRWXU) < 0)
792: goto bad;
793: }
794: vect[0] = np;
795: sink(1, vect);
796: if (setimes) {
797: setimes = 0;
1.40 markus 798: if (utimes(np, tv) < 0)
1.18 markus 799: run_err("%s: set times: %s",
800: np, strerror(errno));
1.1 deraadt 801: }
802: if (mod_flag)
1.18 markus 803: (void) chmod(np, mode);
1.1 deraadt 804: continue;
805: }
806: omode = mode;
807: mode |= S_IWRITE;
1.18 markus 808: if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) {
1.1 deraadt 809: bad: run_err("%s: %s", np, strerror(errno));
810: continue;
811: }
1.29 deraadt 812: (void) atomicio(write, remout, "", 1);
1.1 deraadt 813: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 814: (void) close(ofd);
1.1 deraadt 815: continue;
816: }
817: cp = bp->buf;
818: wrerr = NO;
1.7 deraadt 819:
820: if (showprogress) {
821: totalbytes = size;
822: progressmeter(-1);
823: }
1.12 aaron 824: statbytes = 0;
1.1 deraadt 825: for (count = i = 0; i < size; i += 4096) {
826: amt = 4096;
827: if (i + amt > size)
828: amt = size - i;
829: count += amt;
830: do {
1.30 deraadt 831: j = atomicio(read, remin, cp, amt);
1.1 deraadt 832: if (j <= 0) {
833: run_err("%s", j ? strerror(errno) :
1.18 markus 834: "dropped connection");
1.1 deraadt 835: exit(1);
836: }
837: amt -= j;
838: cp += j;
1.18 markus 839: statbytes += j;
1.1 deraadt 840: } while (amt > 0);
841: if (count == bp->cnt) {
842: /* Keep reading so we stay sync'd up. */
843: if (wrerr == NO) {
1.30 deraadt 844: j = atomicio(write, ofd, bp->buf, count);
1.1 deraadt 845: if (j != count) {
846: wrerr = YES;
1.18 markus 847: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 848: }
849: }
850: count = 0;
851: cp = bp->buf;
852: }
853: }
1.7 deraadt 854: if (showprogress)
855: progressmeter(1);
1.1 deraadt 856: if (count != 0 && wrerr == NO &&
1.30 deraadt 857: (j = atomicio(write, ofd, bp->buf, count)) != count) {
1.1 deraadt 858: wrerr = YES;
1.18 markus 859: wrerrno = j >= 0 ? EIO : errno;
1.1 deraadt 860: }
861: #if 0
862: if (ftruncate(ofd, size)) {
863: run_err("%s: truncate: %s", np, strerror(errno));
864: wrerr = DISPLAYED;
865: }
866: #endif
867: if (pflag) {
868: if (exists || omode != mode)
869: if (fchmod(ofd, omode))
870: run_err("%s: set mode: %s",
1.18 markus 871: np, strerror(errno));
1.1 deraadt 872: } else {
873: if (!exists && omode != mode)
874: if (fchmod(ofd, omode & ~mask))
875: run_err("%s: set mode: %s",
1.18 markus 876: np, strerror(errno));
1.1 deraadt 877: }
1.33 provos 878: if (close(ofd) == -1) {
879: wrerr = YES;
880: wrerrno = errno;
881: }
1.18 markus 882: (void) response();
1.1 deraadt 883: if (setimes && wrerr == NO) {
884: setimes = 0;
1.40 markus 885: if (utimes(np, tv) < 0) {
1.1 deraadt 886: run_err("%s: set times: %s",
1.18 markus 887: np, strerror(errno));
1.1 deraadt 888: wrerr = DISPLAYED;
889: }
890: }
1.18 markus 891: switch (wrerr) {
1.1 deraadt 892: case YES:
893: run_err("%s: %s", np, strerror(wrerrno));
894: break;
895: case NO:
1.29 deraadt 896: (void) atomicio(write, remout, "", 1);
1.1 deraadt 897: break;
898: case DISPLAYED:
899: break;
900: }
901: }
902: screwup:
903: run_err("protocol error: %s", why);
904: exit(1);
905: }
906:
907: int
908: response()
909: {
910: char ch, *cp, resp, rbuf[2048];
911:
1.30 deraadt 912: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 913: lostconn(0);
914:
915: cp = rbuf;
1.18 markus 916: switch (resp) {
917: case 0: /* ok */
1.1 deraadt 918: return (0);
919: default:
920: *cp++ = resp;
921: /* FALLTHROUGH */
1.18 markus 922: case 1: /* error, followed by error msg */
923: case 2: /* fatal error, "" */
1.1 deraadt 924: do {
1.30 deraadt 925: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 926: lostconn(0);
927: *cp++ = ch;
928: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
929:
930: if (!iamremote)
1.29 deraadt 931: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 932: ++errs;
933: if (resp == 1)
934: return (-1);
935: exit(1);
936: }
937: /* NOTREACHED */
938: }
939:
940: void
941: usage()
942: {
1.34 deraadt 943: (void) fprintf(stderr, "usage: scp "
944: "[-pqrvC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2; or:\n"
945: " scp [options] f1 ... fn directory\n");
1.1 deraadt 946: exit(1);
947: }
948:
949: void
1.18 markus 950: run_err(const char *fmt,...)
1.1 deraadt 951: {
952: static FILE *fp;
953: va_list ap;
954: va_start(ap, fmt);
955:
956: ++errs;
957: if (fp == NULL && !(fp = fdopen(remout, "w")))
958: return;
1.18 markus 959: (void) fprintf(fp, "%c", 0x01);
960: (void) fprintf(fp, "scp: ");
961: (void) vfprintf(fp, fmt, ap);
962: (void) fprintf(fp, "\n");
963: (void) fflush(fp);
964:
965: if (!iamremote) {
966: vfprintf(stderr, fmt, ap);
967: fprintf(stderr, "\n");
968: }
1.1 deraadt 969: va_end(ap);
970: }
971:
972: char *
973: colon(cp)
974: char *cp;
975: {
1.23 markus 976: int flag = 0;
977:
1.1 deraadt 978: if (*cp == ':') /* Leading colon is part of file name. */
979: return (0);
1.23 markus 980: if (*cp == '[')
981: flag = 1;
1.1 deraadt 982:
983: for (; *cp; ++cp) {
1.23 markus 984: if (*cp == '@' && *(cp+1) == '[')
985: flag = 1;
986: if (*cp == ']' && *(cp+1) == ':' && flag)
987: return (cp+1);
988: if (*cp == ':' && !flag)
1.1 deraadt 989: return (cp);
990: if (*cp == '/')
991: return (0);
992: }
993: return (0);
994: }
995:
996: void
997: verifydir(cp)
998: char *cp;
999: {
1000: struct stat stb;
1001:
1002: if (!stat(cp, &stb)) {
1003: if (S_ISDIR(stb.st_mode))
1004: return;
1005: errno = ENOTDIR;
1006: }
1007: run_err("%s: %s", cp, strerror(errno));
1008: exit(1);
1009: }
1010:
1011: int
1012: okname(cp0)
1013: char *cp0;
1014: {
1015: int c;
1016: char *cp;
1017:
1018: cp = cp0;
1019: do {
1020: c = *cp;
1021: if (c & 0200)
1022: goto bad;
1.25 markus 1023: if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-' && c != '.')
1.1 deraadt 1024: goto bad;
1025: } while (*++cp);
1026: return (1);
1027:
1.25 markus 1028: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1029: return (0);
1030: }
1031:
1032: BUF *
1033: allocbuf(bp, fd, blksize)
1034: BUF *bp;
1035: int fd, blksize;
1036: {
1037: size_t size;
1038: struct stat stb;
1039:
1040: if (fstat(fd, &stb) < 0) {
1041: run_err("fstat: %s", strerror(errno));
1042: return (0);
1043: }
1.18 markus 1044: if (stb.st_blksize == 0)
1045: size = blksize;
1046: else
1047: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1048: stb.st_blksize;
1.1 deraadt 1049: if (bp->cnt >= size)
1050: return (bp);
1.18 markus 1051: if (bp->buf == NULL)
1052: bp->buf = xmalloc(size);
1053: else
1054: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1055: bp->cnt = size;
1056: return (bp);
1057: }
1058:
1059: void
1060: lostconn(signo)
1061: int signo;
1062: {
1063: if (!iamremote)
1064: fprintf(stderr, "lost connection\n");
1065: exit(1);
1066: }
1.4 aaron 1067:
1.10 deraadt 1068:
1.8 deraadt 1069: void
1070: alarmtimer(int wait)
1.4 aaron 1071: {
1.18 markus 1072: struct itimerval itv;
1.4 aaron 1073:
1.18 markus 1074: itv.it_value.tv_sec = wait;
1075: itv.it_value.tv_usec = 0;
1076: itv.it_interval = itv.it_value;
1077: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1078: }
1079:
1.8 deraadt 1080: void
1.26 markus 1081: updateprogressmeter(int ignore)
1.4 aaron 1082: {
1.9 deraadt 1083: int save_errno = errno;
1084:
1.4 aaron 1085: progressmeter(0);
1.9 deraadt 1086: errno = save_errno;
1.4 aaron 1087: }
1088:
1.16 deraadt 1089: int
1090: foregroundproc()
1091: {
1092: static pid_t pgrp = -1;
1093: int ctty_pgrp;
1094:
1095: if (pgrp == -1)
1096: pgrp = getpgrp();
1097:
1.18 markus 1098: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1099: ctty_pgrp == pgrp));
1.16 deraadt 1100: }
1101:
1.8 deraadt 1102: void
1103: progressmeter(int flag)
1.4 aaron 1104: {
1105: static const char prefixes[] = " KMGTP";
1106: static struct timeval lastupdate;
1.11 aaron 1107: static off_t lastsize;
1.4 aaron 1108: struct timeval now, td, wait;
1109: off_t cursize, abbrevsize;
1110: double elapsed;
1111: int ratio, barlength, i, remaining;
1112: char buf[256];
1113:
1114: if (flag == -1) {
1.18 markus 1115: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1116: lastupdate = start;
1.11 aaron 1117: lastsize = 0;
1.18 markus 1118: }
1.16 deraadt 1119: if (foregroundproc() == 0)
1120: return;
1121:
1.18 markus 1122: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1123: cursize = statbytes;
1.13 aaron 1124: if (totalbytes != 0) {
1.21 markus 1125: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1126: ratio = MAX(ratio, 0);
1127: ratio = MIN(ratio, 100);
1.18 markus 1128: } else
1.13 aaron 1129: ratio = 100;
1130:
1.18 markus 1131: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1132:
1.11 aaron 1133: barlength = getttywidth() - 51;
1.4 aaron 1134: if (barlength > 0) {
1135: i = barlength * ratio / 100;
1136: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1137: "|%.*s%*s|", i,
1138: "*****************************************************************************"
1139: "*****************************************************************************",
1140: barlength - i, "");
1.4 aaron 1141: }
1142: i = 0;
1143: abbrevsize = cursize;
1144: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1145: i++;
1146: abbrevsize >>= 10;
1147: }
1148: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ",
1.18 markus 1149: (quad_t) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' :
1150: 'B');
1.4 aaron 1151:
1152: timersub(&now, &lastupdate, &wait);
1153: if (cursize > lastsize) {
1154: lastupdate = now;
1155: lastsize = cursize;
1156: if (wait.tv_sec >= STALLTIME) {
1157: start.tv_sec += wait.tv_sec;
1158: start.tv_usec += wait.tv_usec;
1159: }
1160: wait.tv_sec = 0;
1161: }
1162: timersub(&now, &start, &td);
1.6 aaron 1163: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1164:
1165: if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes) {
1166: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1167: " --:-- ETA");
1.4 aaron 1168: } else if (wait.tv_sec >= STALLTIME) {
1169: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.18 markus 1170: " - stalled -");
1.4 aaron 1171: } else {
1.28 deraadt 1172: if (flag != 1)
1173: remaining =
1174: (int)(totalbytes / (statbytes / elapsed) - elapsed);
1175: else
1176: remaining = elapsed;
1177:
1.14 aaron 1178: i = remaining / 3600;
1.4 aaron 1179: if (i)
1180: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1181: "%2d:", i);
1.4 aaron 1182: else
1183: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1184: " ");
1.4 aaron 1185: i = remaining % 3600;
1186: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1187: "%02d:%02d%s", i / 60, i % 60,
1188: (flag != 1) ? " ETA" : " ");
1.4 aaron 1189: }
1.10 deraadt 1190: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1191:
1192: if (flag == -1) {
1.26 markus 1193: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1194: alarmtimer(1);
1195: } else if (flag == 1) {
1.10 deraadt 1196: alarmtimer(0);
1.29 deraadt 1197: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1198: statbytes = 0;
1.4 aaron 1199: }
1200: }
1201:
1.8 deraadt 1202: int
1203: getttywidth(void)
1.4 aaron 1204: {
1205: struct winsize winsize;
1206:
1207: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1208: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1209: else
1.18 markus 1210: return (80);
1.41 markus 1211: }
1212:
1213: void
1214: addargs(char *fmt, ...)
1215: {
1216: va_list ap;
1217: char buf[1024];
1218:
1219: va_start(ap, fmt);
1220: vsnprintf(buf, sizeof(buf), fmt, ap);
1221: va_end(ap);
1222:
1223: if (args.list == NULL) {
1224: args.nalloc = 32;
1225: args.num = 0;
1226: args.list = xmalloc(args.nalloc * sizeof(char *));
1227: } else if (args.num+2 >= args.nalloc) {
1228: args.nalloc *= 2;
1229: args.list = xrealloc(args.list, args.nalloc * sizeof(char *));
1230: }
1231: args.list[args.num++] = xstrdup(buf);
1232: args.list[args.num] = NULL;
1.4 aaron 1233: }
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