Annotation of src/usr.bin/ssh/scp.c, Revision 1.64
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"
1.64 ! stevesk 78: RCSID("$OpenBSD: scp.c,v 1.63 2001/03/28 19:56:23 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"
1.1 deraadt 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) */
1.50 markus 117: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 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:
1.18 markus 190: BUF *allocbuf(BUF *, int, int);
191: char *colon(char *);
192: void lostconn(int);
193: void nospace(void);
194: int okname(char *);
195: void run_err(const char *,...);
196: void verifydir(char *);
1.1 deraadt 197:
198: struct passwd *pwd;
1.18 markus 199: uid_t userid;
1.1 deraadt 200: int errs, remin, remout;
201: int pflag, iamremote, iamrecursive, targetshouldbedirectory;
202:
203: #define CMDNEEDS 64
204: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
205:
1.18 markus 206: int response(void);
207: void rsource(char *, struct stat *);
208: void sink(int, char *[]);
209: void source(int, char *[]);
210: void tolocal(int, char *[]);
1.56 itojun 211: char *cleanhostname(char *);
1.18 markus 212: void toremote(char *, int, char *[]);
213: void usage(void);
1.1 deraadt 214:
215: int
216: main(argc, argv)
217: int argc;
218: char *argv[];
219: {
220: int ch, fflag, tflag;
221: char *targ;
222: extern char *optarg;
223: extern int optind;
224:
1.41 markus 225: args.list = NULL;
226: addargs("ssh"); /* overwritten with ssh_program */
227: addargs("-x");
228: addargs("-oFallBackToRsh no");
229:
1.1 deraadt 230: fflag = tflag = 0;
1.49 markus 231: while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
1.18 markus 232: switch (ch) {
233: /* User-visible flags. */
1.23 markus 234: case '4':
1.41 markus 235: case '6':
236: case 'C':
237: addargs("-%c", ch);
238: break;
239: case 'o':
240: case 'c':
241: case 'i':
1.42 markus 242: addargs("-%c%s", ch, optarg);
1.23 markus 243: break;
1.41 markus 244: case 'P':
1.42 markus 245: addargs("-p%s", optarg);
1.41 markus 246: break;
247: case 'B':
1.42 markus 248: addargs("-oBatchmode yes");
1.23 markus 249: break;
1.1 deraadt 250: case 'p':
251: pflag = 1;
252: break;
253: case 'r':
254: iamrecursive = 1;
255: break;
1.34 deraadt 256: case 'S':
1.41 markus 257: ssh_program = xstrdup(optarg);
258: break;
259: case 'v':
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:
1.23 markus 328: char *
329: cleanhostname(host)
330: char *host;
331: {
332: if (*host == '[' && host[strlen(host) - 1] == ']') {
333: host[strlen(host) - 1] = '\0';
334: return (host + 1);
335: } else
336: return host;
337: }
338:
1.1 deraadt 339: void
340: toremote(targ, argc, argv)
341: char *targ, *argv[];
342: int argc;
343: {
344: int i, len;
345: char *bp, *host, *src, *suser, *thost, *tuser;
346:
347: *targ++ = 0;
348: if (*targ == 0)
349: targ = ".";
350:
351: if ((thost = strchr(argv[argc - 1], '@'))) {
352: /* user@host */
353: *thost++ = 0;
354: tuser = argv[argc - 1];
355: if (*tuser == '\0')
356: tuser = NULL;
357: else if (!okname(tuser))
358: exit(1);
359: } else {
360: thost = argv[argc - 1];
361: tuser = NULL;
362: }
363:
364: for (i = 0; i < argc - 1; i++) {
365: src = colon(argv[i]);
1.18 markus 366: if (src) { /* remote to remote */
1.1 deraadt 367: *src++ = 0;
368: if (*src == 0)
369: src = ".";
370: host = strchr(argv[i], '@');
1.34 deraadt 371: len = strlen(ssh_program) + strlen(argv[i]) +
1.35 deraadt 372: strlen(src) + (tuser ? strlen(tuser) : 0) +
373: strlen(thost) + strlen(targ) + CMDNEEDS + 32;
1.18 markus 374: bp = xmalloc(len);
1.1 deraadt 375: if (host) {
376: *host++ = 0;
1.23 markus 377: host = cleanhostname(host);
1.1 deraadt 378: suser = argv[i];
379: if (*suser == '\0')
380: suser = pwd->pw_name;
381: else if (!okname(suser))
382: continue;
1.55 deraadt 383: snprintf(bp, len,
384: "%s%s -x -o'FallBackToRsh no' -n "
385: "-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]);
1.55 deraadt 392: snprintf(bp, len,
393: "exec %s%s -x -o'FallBackToRsh no' -n %s "
394: "%s %s '%s%s%s:%s'",
1.44 deraadt 395: ssh_program, verbose_mode ? " -v" : "",
396: host, cmd, src,
397: tuser ? tuser : "", tuser ? "@" : "",
398: thost, targ);
1.23 markus 399: }
1.18 markus 400: if (verbose_mode)
401: fprintf(stderr, "Executing: %s\n", bp);
402: (void) system(bp);
403: (void) xfree(bp);
404: } else { /* local to remote */
1.1 deraadt 405: if (remin == -1) {
406: len = strlen(targ) + CMDNEEDS + 20;
1.18 markus 407: bp = xmalloc(len);
1.55 deraadt 408: (void) snprintf(bp, len, "%s -t %s", cmd, targ);
1.23 markus 409: host = cleanhostname(thost);
1.35 deraadt 410: if (do_cmd(host, tuser, bp, &remin,
411: &remout, argc) < 0)
1.18 markus 412: exit(1);
1.1 deraadt 413: if (response() < 0)
414: exit(1);
1.18 markus 415: (void) xfree(bp);
1.1 deraadt 416: }
1.18 markus 417: source(1, argv + i);
1.1 deraadt 418: }
419: }
420: }
421:
422: void
423: tolocal(argc, argv)
424: int argc;
425: char *argv[];
426: {
427: int i, len;
428: char *bp, *host, *src, *suser;
429:
430: for (i = 0; i < argc - 1; i++) {
1.18 markus 431: if (!(src = colon(argv[i]))) { /* Local to local. */
1.1 deraadt 432: len = strlen(_PATH_CP) + strlen(argv[i]) +
1.35 deraadt 433: strlen(argv[argc - 1]) + 20;
1.1 deraadt 434: bp = xmalloc(len);
1.55 deraadt 435: (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
1.35 deraadt 436: iamrecursive ? " -r" : "", pflag ? " -p" : "",
437: argv[i], argv[argc - 1]);
1.18 markus 438: if (verbose_mode)
439: fprintf(stderr, "Executing: %s\n", bp);
1.1 deraadt 440: if (system(bp))
441: ++errs;
1.18 markus 442: (void) xfree(bp);
1.1 deraadt 443: continue;
444: }
445: *src++ = 0;
446: if (*src == 0)
447: src = ".";
448: if ((host = strchr(argv[i], '@')) == NULL) {
449: host = argv[i];
450: suser = NULL;
451: } else {
452: *host++ = 0;
453: suser = argv[i];
454: if (*suser == '\0')
455: suser = pwd->pw_name;
456: else if (!okname(suser))
457: continue;
458: }
1.23 markus 459: host = cleanhostname(host);
1.1 deraadt 460: len = strlen(src) + CMDNEEDS + 20;
1.18 markus 461: bp = xmalloc(len);
1.55 deraadt 462: (void) snprintf(bp, len, "%s -f %s", cmd, src);
1.35 deraadt 463: if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
1.18 markus 464: (void) xfree(bp);
465: ++errs;
466: continue;
1.1 deraadt 467: }
1.18 markus 468: xfree(bp);
1.1 deraadt 469: sink(1, argv + argc - 1);
1.18 markus 470: (void) close(remin);
1.1 deraadt 471: remin = remout = -1;
472: }
473: }
474:
475: void
476: source(argc, argv)
477: int argc;
478: char *argv[];
479: {
480: struct stat stb;
481: static BUF buffer;
482: BUF *bp;
483: off_t i;
484: int amt, fd, haderr, indx, result;
485: char *last, *name, buf[2048];
486:
487: for (indx = 0; indx < argc; ++indx) {
1.18 markus 488: name = argv[indx];
1.11 aaron 489: statbytes = 0;
1.1 deraadt 490: if ((fd = open(name, O_RDONLY, 0)) < 0)
491: goto syserr;
492: if (fstat(fd, &stb) < 0) {
493: syserr: run_err("%s: %s", name, strerror(errno));
494: goto next;
495: }
496: switch (stb.st_mode & S_IFMT) {
497: case S_IFREG:
498: break;
499: case S_IFDIR:
500: if (iamrecursive) {
501: rsource(name, &stb);
502: goto next;
503: }
504: /* FALLTHROUGH */
505: default:
506: run_err("%s: not a regular file", name);
507: goto next;
508: }
509: if ((last = strrchr(name, '/')) == NULL)
510: last = name;
511: else
512: ++last;
1.11 aaron 513: curfile = last;
1.1 deraadt 514: if (pflag) {
515: /*
516: * Make it compatible with possible future
517: * versions expecting microseconds.
518: */
1.55 deraadt 519: (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
1.47 markus 520: (u_long) stb.st_mtime,
521: (u_long) stb.st_atime);
1.29 deraadt 522: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 523: if (response() < 0)
524: goto next;
525: }
526: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 527: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 528: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 529: (long long)stb.st_size, last);
1.18 markus 530: if (verbose_mode) {
531: fprintf(stderr, "Sending file modes: %s", buf);
532: fflush(stderr);
533: }
1.29 deraadt 534: (void) atomicio(write, remout, buf, strlen(buf));
1.1 deraadt 535: if (response() < 0)
536: goto next;
537: if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
1.18 markus 538: next: (void) close(fd);
1.1 deraadt 539: continue;
540: }
1.12 aaron 541: if (showprogress) {
542: totalbytes = stb.st_size;
1.6 aaron 543: progressmeter(-1);
1.12 aaron 544: }
1.1 deraadt 545: /* Keep writing after an error so that we stay sync'd up. */
546: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
547: amt = bp->cnt;
548: if (i + amt > stb.st_size)
549: amt = stb.st_size - i;
550: if (!haderr) {
1.30 deraadt 551: result = atomicio(read, fd, bp->buf, amt);
1.1 deraadt 552: if (result != amt)
553: haderr = result >= 0 ? EIO : errno;
554: }
555: if (haderr)
1.29 deraadt 556: (void) atomicio(write, remout, bp->buf, amt);
1.1 deraadt 557: else {
1.29 deraadt 558: result = atomicio(write, remout, bp->buf, amt);
1.1 deraadt 559: if (result != amt)
560: haderr = result >= 0 ? EIO : errno;
1.4 aaron 561: statbytes += result;
1.1 deraadt 562: }
563: }
1.18 markus 564: if (showprogress)
1.6 aaron 565: progressmeter(1);
1.4 aaron 566:
1.1 deraadt 567: if (close(fd) < 0 && !haderr)
568: haderr = errno;
569: if (!haderr)
1.29 deraadt 570: (void) atomicio(write, remout, "", 1);
1.1 deraadt 571: else
572: run_err("%s: %s", name, strerror(haderr));
1.18 markus 573: (void) response();
1.1 deraadt 574: }
575: }
576:
577: void
578: rsource(name, statp)
579: char *name;
580: struct stat *statp;
581: {
582: DIR *dirp;
583: struct dirent *dp;
584: char *last, *vect[1], path[1100];
585:
586: if (!(dirp = opendir(name))) {
587: run_err("%s: %s", name, strerror(errno));
588: return;
589: }
590: last = strrchr(name, '/');
591: if (last == 0)
592: last = name;
593: else
594: last++;
595: if (pflag) {
1.55 deraadt 596: (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
1.47 markus 597: (u_long) statp->st_mtime,
598: (u_long) statp->st_atime);
1.29 deraadt 599: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 600: if (response() < 0) {
601: closedir(dirp);
602: return;
603: }
604: }
1.55 deraadt 605: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 606: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 607: if (verbose_mode)
608: fprintf(stderr, "Entering directory: %s", path);
1.29 deraadt 609: (void) atomicio(write, remout, path, strlen(path));
1.1 deraadt 610: if (response() < 0) {
611: closedir(dirp);
612: return;
613: }
1.63 stevesk 614: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 615: if (dp->d_ino == 0)
616: continue;
617: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
618: continue;
619: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
620: run_err("%s/%s: name too long", name, dp->d_name);
621: continue;
622: }
1.55 deraadt 623: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 624: vect[0] = path;
625: source(1, vect);
626: }
1.18 markus 627: (void) closedir(dirp);
1.29 deraadt 628: (void) atomicio(write, remout, "E\n", 2);
1.18 markus 629: (void) response();
1.1 deraadt 630: }
631:
632: void
633: sink(argc, argv)
634: int argc;
635: char *argv[];
636: {
637: static BUF buffer;
638: struct stat stb;
1.18 markus 639: enum {
640: YES, NO, DISPLAYED
641: } wrerr;
1.1 deraadt 642: BUF *bp;
643: off_t i, j;
644: int amt, count, exists, first, mask, mode, ofd, omode;
1.36 deraadt 645: off_t size;
646: int setimes, targisdir, wrerrno = 0;
1.1 deraadt 647: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
1.18 markus 648: int dummy_usec;
1.40 markus 649: struct timeval tv[2];
1.1 deraadt 650:
651: #define SCREWUP(str) { why = str; goto screwup; }
652:
653: setimes = targisdir = 0;
654: mask = umask(0);
655: if (!pflag)
1.18 markus 656: (void) umask(mask);
1.1 deraadt 657: if (argc != 1) {
658: run_err("ambiguous target");
659: exit(1);
660: }
661: targ = *argv;
662: if (targetshouldbedirectory)
663: verifydir(targ);
1.18 markus 664:
1.29 deraadt 665: (void) atomicio(write, remout, "", 1);
1.1 deraadt 666: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
667: targisdir = 1;
668: for (first = 1;; first = 0) {
669: cp = buf;
1.30 deraadt 670: if (atomicio(read, remin, cp, 1) <= 0)
1.1 deraadt 671: return;
672: if (*cp++ == '\n')
673: SCREWUP("unexpected <newline>");
674: do {
1.30 deraadt 675: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 676: SCREWUP("lost connection");
677: *cp++ = ch;
678: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
679: *cp = 0;
680:
681: if (buf[0] == '\01' || buf[0] == '\02') {
682: if (iamremote == 0)
1.29 deraadt 683: (void) atomicio(write, STDERR_FILENO,
1.44 deraadt 684: buf + 1, strlen(buf + 1));
1.1 deraadt 685: if (buf[0] == '\02')
686: exit(1);
687: ++errs;
688: continue;
689: }
690: if (buf[0] == 'E') {
1.29 deraadt 691: (void) atomicio(write, remout, "", 1);
1.1 deraadt 692: return;
693: }
694: if (ch == '\n')
695: *--cp = 0;
696:
697: #define getnum(t) (t) = 0; \
698: while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
699: cp = buf;
700: if (*cp == 'T') {
701: setimes++;
702: cp++;
1.40 markus 703: getnum(tv[1].tv_sec);
1.1 deraadt 704: if (*cp++ != ' ')
705: SCREWUP("mtime.sec not delimited");
706: getnum(dummy_usec);
1.40 markus 707: tv[1].tv_usec = 0;
1.1 deraadt 708: if (*cp++ != ' ')
709: SCREWUP("mtime.usec not delimited");
1.40 markus 710: getnum(tv[0].tv_sec);
1.1 deraadt 711: if (*cp++ != ' ')
712: SCREWUP("atime.sec not delimited");
713: getnum(dummy_usec);
1.40 markus 714: tv[0].tv_usec = 0;
1.1 deraadt 715: if (*cp++ != '\0')
716: SCREWUP("atime.usec not delimited");
1.29 deraadt 717: (void) atomicio(write, remout, "", 1);
1.1 deraadt 718: continue;
719: }
720: if (*cp != 'C' && *cp != 'D') {
721: /*
722: * Check for the case "rcp remote:foo\* local:bar".
723: * In this case, the line "No match." can be returned
724: * by the shell before the rcp command on the remote is
725: * executed so the ^Aerror_message convention isn't
726: * followed.
727: */
728: if (first) {
729: run_err("%s", cp);
730: exit(1);
731: }
732: SCREWUP("expected control record");
733: }
734: mode = 0;
735: for (++cp; cp < buf + 5; cp++) {
736: if (*cp < '0' || *cp > '7')
737: SCREWUP("bad mode");
738: mode = (mode << 3) | (*cp - '0');
739: }
740: if (*cp++ != ' ')
741: SCREWUP("mode not delimited");
742:
1.63 stevesk 743: for (size = 0; isdigit(*cp);)
1.1 deraadt 744: size = size * 10 + (*cp++ - '0');
745: if (*cp++ != ' ')
746: SCREWUP("size not delimited");
747: if (targisdir) {
748: static char *namebuf;
749: static int cursize;
750: size_t need;
751:
752: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 753: if (need > cursize) {
1.58 danh 754: if (namebuf)
755: xfree(namebuf);
1.18 markus 756: namebuf = xmalloc(need);
1.55 deraadt 757: cursize = need;
758: }
759: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.35 deraadt 760: *targ ? "/" : "", cp);
1.1 deraadt 761: np = namebuf;
762: } else
763: np = targ;
1.12 aaron 764: curfile = cp;
1.1 deraadt 765: exists = stat(np, &stb) == 0;
766: if (buf[0] == 'D') {
767: int mod_flag = pflag;
768: if (exists) {
769: if (!S_ISDIR(stb.st_mode)) {
770: errno = ENOTDIR;
771: goto bad;
772: }
773: if (pflag)
1.18 markus 774: (void) chmod(np, mode);
1.1 deraadt 775: } else {
1.18 markus 776: /* Handle copying from a read-only
777: directory */
1.1 deraadt 778: mod_flag = 1;
779: if (mkdir(np, mode | S_IRWXU) < 0)
780: goto bad;
781: }
1.58 danh 782: vect[0] = xstrdup(np);
1.1 deraadt 783: sink(1, vect);
784: if (setimes) {
785: setimes = 0;
1.59 deraadt 786: if (utimes(vect[0], tv) < 0)
1.18 markus 787: run_err("%s: set times: %s",
1.59 deraadt 788: vect[0], strerror(errno));
1.1 deraadt 789: }
790: if (mod_flag)
1.59 deraadt 791: (void) chmod(vect[0], mode);
792: if (vect[0])
793: xfree(vect[0]);
1.1 deraadt 794: continue;
795: }
796: omode = mode;
797: mode |= S_IWRITE;
1.18 markus 798: if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) {
1.1 deraadt 799: bad: run_err("%s: %s", np, strerror(errno));
800: continue;
801: }
1.29 deraadt 802: (void) atomicio(write, remout, "", 1);
1.1 deraadt 803: if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
1.18 markus 804: (void) close(ofd);
1.1 deraadt 805: continue;
806: }
807: cp = bp->buf;
808: wrerr = NO;
1.7 deraadt 809:
810: if (showprogress) {
811: totalbytes = size;
812: progressmeter(-1);
813: }
1.12 aaron 814: statbytes = 0;
1.1 deraadt 815: for (count = i = 0; i < size; i += 4096) {
816: amt = 4096;
817: if (i + amt > size)
818: amt = size - i;
819: count += amt;
820: do {
1.43 markus 821: j = read(remin, cp, amt);
822: if (j == -1 && (errno == EINTR || errno == EAGAIN)) {
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 0
854: if (ftruncate(ofd, size)) {
855: run_err("%s: truncate: %s", np, strerror(errno));
856: wrerr = DISPLAYED;
857: }
858: #endif
859: if (pflag) {
860: if (exists || omode != mode)
861: if (fchmod(ofd, omode))
862: run_err("%s: set mode: %s",
1.63 stevesk 863: np, strerror(errno));
1.1 deraadt 864: } else {
865: if (!exists && omode != mode)
866: if (fchmod(ofd, omode & ~mask))
867: run_err("%s: set mode: %s",
1.63 stevesk 868: np, strerror(errno));
1.1 deraadt 869: }
1.33 provos 870: if (close(ofd) == -1) {
871: wrerr = YES;
872: wrerrno = errno;
873: }
1.18 markus 874: (void) response();
1.1 deraadt 875: if (setimes && wrerr == NO) {
876: setimes = 0;
1.40 markus 877: if (utimes(np, tv) < 0) {
1.1 deraadt 878: run_err("%s: set times: %s",
1.63 stevesk 879: np, strerror(errno));
1.1 deraadt 880: wrerr = DISPLAYED;
881: }
882: }
1.18 markus 883: switch (wrerr) {
1.1 deraadt 884: case YES:
885: run_err("%s: %s", np, strerror(wrerrno));
886: break;
887: case NO:
1.29 deraadt 888: (void) atomicio(write, remout, "", 1);
1.1 deraadt 889: break;
890: case DISPLAYED:
891: break;
892: }
893: }
894: screwup:
895: run_err("protocol error: %s", why);
896: exit(1);
897: }
898:
899: int
900: response()
901: {
902: char ch, *cp, resp, rbuf[2048];
903:
1.30 deraadt 904: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 905: lostconn(0);
906:
907: cp = rbuf;
1.18 markus 908: switch (resp) {
909: case 0: /* ok */
1.1 deraadt 910: return (0);
911: default:
912: *cp++ = resp;
913: /* FALLTHROUGH */
1.18 markus 914: case 1: /* error, followed by error msg */
915: case 2: /* fatal error, "" */
1.1 deraadt 916: do {
1.30 deraadt 917: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 918: lostconn(0);
919: *cp++ = ch;
920: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
921:
922: if (!iamremote)
1.29 deraadt 923: (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
1.1 deraadt 924: ++errs;
925: if (resp == 1)
926: return (-1);
927: exit(1);
928: }
929: /* NOTREACHED */
930: }
931:
932: void
933: usage()
934: {
1.34 deraadt 935: (void) fprintf(stderr, "usage: scp "
1.64 ! stevesk 936: "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2\n"
! 937: " or: scp [options] f1 ... fn directory\n");
1.1 deraadt 938: exit(1);
939: }
940:
941: void
1.18 markus 942: run_err(const char *fmt,...)
1.1 deraadt 943: {
944: static FILE *fp;
945: va_list ap;
946: va_start(ap, fmt);
947:
948: ++errs;
949: if (fp == NULL && !(fp = fdopen(remout, "w")))
950: return;
1.18 markus 951: (void) fprintf(fp, "%c", 0x01);
952: (void) fprintf(fp, "scp: ");
953: (void) vfprintf(fp, fmt, ap);
954: (void) fprintf(fp, "\n");
955: (void) fflush(fp);
956:
957: if (!iamremote) {
958: vfprintf(stderr, fmt, ap);
959: fprintf(stderr, "\n");
960: }
1.1 deraadt 961: va_end(ap);
962: }
963:
964: char *
965: colon(cp)
966: char *cp;
967: {
1.23 markus 968: int flag = 0;
969:
1.1 deraadt 970: if (*cp == ':') /* Leading colon is part of file name. */
971: return (0);
1.23 markus 972: if (*cp == '[')
973: flag = 1;
1.1 deraadt 974:
975: for (; *cp; ++cp) {
1.23 markus 976: if (*cp == '@' && *(cp+1) == '[')
977: flag = 1;
978: if (*cp == ']' && *(cp+1) == ':' && flag)
979: return (cp+1);
980: if (*cp == ':' && !flag)
1.1 deraadt 981: return (cp);
982: if (*cp == '/')
983: return (0);
984: }
985: return (0);
986: }
987:
988: void
989: verifydir(cp)
990: char *cp;
991: {
992: struct stat stb;
993:
994: if (!stat(cp, &stb)) {
995: if (S_ISDIR(stb.st_mode))
996: return;
997: errno = ENOTDIR;
998: }
999: run_err("%s: %s", cp, strerror(errno));
1000: exit(1);
1001: }
1002:
1003: int
1004: okname(cp0)
1005: char *cp0;
1006: {
1007: int c;
1008: char *cp;
1009:
1010: cp = cp0;
1011: do {
1012: c = *cp;
1013: if (c & 0200)
1014: goto bad;
1.46 markus 1015: if (!isalpha(c) && !isdigit(c) &&
1016: c != '_' && c != '-' && c != '.' && c != '+')
1.1 deraadt 1017: goto bad;
1018: } while (*++cp);
1019: return (1);
1020:
1.25 markus 1021: bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1022: return (0);
1023: }
1024:
1025: BUF *
1026: allocbuf(bp, fd, blksize)
1027: BUF *bp;
1028: int fd, blksize;
1029: {
1030: size_t size;
1031: struct stat stb;
1032:
1033: if (fstat(fd, &stb) < 0) {
1034: run_err("fstat: %s", strerror(errno));
1035: return (0);
1036: }
1.18 markus 1037: if (stb.st_blksize == 0)
1038: size = blksize;
1039: else
1040: size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1.35 deraadt 1041: stb.st_blksize;
1.1 deraadt 1042: if (bp->cnt >= size)
1043: return (bp);
1.18 markus 1044: if (bp->buf == NULL)
1045: bp->buf = xmalloc(size);
1046: else
1047: bp->buf = xrealloc(bp->buf, size);
1.1 deraadt 1048: bp->cnt = size;
1049: return (bp);
1050: }
1051:
1052: void
1053: lostconn(signo)
1054: int signo;
1055: {
1056: if (!iamremote)
1057: fprintf(stderr, "lost connection\n");
1058: exit(1);
1059: }
1.4 aaron 1060:
1.10 deraadt 1061:
1.8 deraadt 1062: void
1063: alarmtimer(int wait)
1.4 aaron 1064: {
1.18 markus 1065: struct itimerval itv;
1.4 aaron 1066:
1.18 markus 1067: itv.it_value.tv_sec = wait;
1068: itv.it_value.tv_usec = 0;
1069: itv.it_interval = itv.it_value;
1070: setitimer(ITIMER_REAL, &itv, NULL);
1.4 aaron 1071: }
1072:
1.8 deraadt 1073: void
1.26 markus 1074: updateprogressmeter(int ignore)
1.4 aaron 1075: {
1.9 deraadt 1076: int save_errno = errno;
1077:
1.4 aaron 1078: progressmeter(0);
1.9 deraadt 1079: errno = save_errno;
1.4 aaron 1080: }
1081:
1.16 deraadt 1082: int
1.56 itojun 1083: foregroundproc(void)
1.16 deraadt 1084: {
1085: static pid_t pgrp = -1;
1086: int ctty_pgrp;
1087:
1088: if (pgrp == -1)
1089: pgrp = getpgrp();
1090:
1.18 markus 1091: return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1092: ctty_pgrp == pgrp));
1.16 deraadt 1093: }
1094:
1.8 deraadt 1095: void
1096: progressmeter(int flag)
1.4 aaron 1097: {
1098: static const char prefixes[] = " KMGTP";
1099: static struct timeval lastupdate;
1.11 aaron 1100: static off_t lastsize;
1.4 aaron 1101: struct timeval now, td, wait;
1102: off_t cursize, abbrevsize;
1103: double elapsed;
1104: int ratio, barlength, i, remaining;
1105: char buf[256];
1106:
1107: if (flag == -1) {
1.18 markus 1108: (void) gettimeofday(&start, (struct timezone *) 0);
1.4 aaron 1109: lastupdate = start;
1.11 aaron 1110: lastsize = 0;
1.18 markus 1111: }
1.16 deraadt 1112: if (foregroundproc() == 0)
1113: return;
1114:
1.18 markus 1115: (void) gettimeofday(&now, (struct timezone *) 0);
1.4 aaron 1116: cursize = statbytes;
1.13 aaron 1117: if (totalbytes != 0) {
1.21 markus 1118: ratio = 100.0 * cursize / totalbytes;
1.13 aaron 1119: ratio = MAX(ratio, 0);
1120: ratio = MIN(ratio, 100);
1.18 markus 1121: } else
1.13 aaron 1122: ratio = 100;
1123:
1.18 markus 1124: snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1.4 aaron 1125:
1.11 aaron 1126: barlength = getttywidth() - 51;
1.4 aaron 1127: if (barlength > 0) {
1128: i = barlength * ratio / 100;
1129: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1130: "|%.*s%*s|", i,
1131: "*****************************************************************************"
1132: "*****************************************************************************",
1133: barlength - i, "");
1.4 aaron 1134: }
1135: i = 0;
1136: abbrevsize = cursize;
1137: while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1138: i++;
1139: abbrevsize >>= 10;
1140: }
1.54 itojun 1141: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5llu %c%c ",
1.53 deraadt 1142: (unsigned long long) abbrevsize, prefixes[i],
1143: prefixes[i] == ' ' ? ' ' : 'B');
1.4 aaron 1144:
1145: timersub(&now, &lastupdate, &wait);
1146: if (cursize > lastsize) {
1147: lastupdate = now;
1148: lastsize = cursize;
1149: if (wait.tv_sec >= STALLTIME) {
1150: start.tv_sec += wait.tv_sec;
1151: start.tv_usec += wait.tv_usec;
1152: }
1153: wait.tv_sec = 0;
1154: }
1155: timersub(&now, &start, &td);
1.6 aaron 1156: elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1.4 aaron 1157:
1.44 deraadt 1158: if (flag != 1 &&
1159: (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1.4 aaron 1160: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1161: " --:-- ETA");
1.4 aaron 1162: } else if (wait.tv_sec >= STALLTIME) {
1163: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.44 deraadt 1164: " - stalled -");
1.4 aaron 1165: } else {
1.28 deraadt 1166: if (flag != 1)
1.44 deraadt 1167: remaining = (int)(totalbytes / (statbytes / elapsed) -
1168: elapsed);
1.28 deraadt 1169: else
1170: remaining = elapsed;
1171:
1.14 aaron 1172: i = remaining / 3600;
1.4 aaron 1173: if (i)
1174: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1175: "%2d:", i);
1.4 aaron 1176: else
1177: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1178: " ");
1.4 aaron 1179: i = remaining % 3600;
1180: snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1.35 deraadt 1181: "%02d:%02d%s", i / 60, i % 60,
1182: (flag != 1) ? " ETA" : " ");
1.4 aaron 1183: }
1.10 deraadt 1184: atomicio(write, fileno(stdout), buf, strlen(buf));
1.4 aaron 1185:
1186: if (flag == -1) {
1.26 markus 1187: signal(SIGALRM, updateprogressmeter);
1.4 aaron 1188: alarmtimer(1);
1189: } else if (flag == 1) {
1.10 deraadt 1190: alarmtimer(0);
1.29 deraadt 1191: atomicio(write, fileno(stdout), "\n", 1);
1.12 aaron 1192: statbytes = 0;
1.4 aaron 1193: }
1194: }
1195:
1.8 deraadt 1196: int
1197: getttywidth(void)
1.4 aaron 1198: {
1199: struct winsize winsize;
1200:
1201: if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1.18 markus 1202: return (winsize.ws_col ? winsize.ws_col : 80);
1.4 aaron 1203: else
1.18 markus 1204: return (80);
1.41 markus 1205: }
1206:
1207: void
1208: addargs(char *fmt, ...)
1209: {
1210: va_list ap;
1211: char buf[1024];
1212:
1213: va_start(ap, fmt);
1214: vsnprintf(buf, sizeof(buf), fmt, ap);
1215: va_end(ap);
1216:
1217: if (args.list == NULL) {
1218: args.nalloc = 32;
1219: args.num = 0;
1220: args.list = xmalloc(args.nalloc * sizeof(char *));
1221: } else if (args.num+2 >= args.nalloc) {
1222: args.nalloc *= 2;
1223: args.list = xrealloc(args.list, args.nalloc * sizeof(char *));
1224: }
1225: args.list[args.num++] = xstrdup(buf);
1226: args.list[args.num] = NULL;
1.4 aaron 1227: }
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