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1.22 ! krw 1: /* $OpenBSD: server.c,v 1.21 2009/10/27 23:59:42 deraadt Exp $ */
1.4 deraadt 2:
1.1 dm 3: /*
4: * Copyright (c) 1983 Regents of the University of California.
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
1.15 millert 15: * 3. Neither the name of the University nor the names of its contributors
1.1 dm 16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
1.14 millert 31: #include "defs.h"
1.1 dm 32:
33: /*
34: * Server routines
35: */
36:
37: char tempname[sizeof _RDIST_TMP + 1]; /* Tmp file name */
38: char buf[BUFSIZ]; /* general purpose buffer */
39: char target[MAXPATHLEN]; /* target/source directory name */
40: char *ptarget; /* pointer to end of target name */
41: int catname = 0; /* cat name to target name */
42: char *sptarget[32]; /* stack of saved ptarget's for directories */
43: char *fromhost = NULL; /* Client hostname */
1.22 ! krw 44: static int64_t min_freespace = 0; /* Minimium free space on a filesystem */
! 45: static int64_t min_freefiles = 0; /* Minimium free # files on a filesystem */
1.1 dm 46: int oumask; /* Old umask */
47:
1.14 millert 48: static int cattarget(char *);
49: static int setownership(char *, int, UID_T, GID_T, int);
50: static int setfilemode(char *, int, int, int);
51: static int fchog(int, char *, char *, char *, int);
52: static int removefile(struct stat *, int);
53: static void doclean(char *);
54: static void clean(char *);
55: static void dospecial(char *);
56: static void docmdspecial(void);
57: static void query(char *);
58: static int chkparent(char *, opt_t);
59: static char *savetarget(char *, opt_t);
1.19 millert 60: static void recvfile(char *, opt_t, int, char *, char *, time_t, time_t, off_t);
1.14 millert 61: static void recvdir(opt_t, int, char *, char *);
62: static void recvlink(char *, opt_t, int, off_t);
63: static void hardlink(char *);
64: static void setconfig(char *);
65: static void recvit(char *, int);
66: static void dochmog(char *);
67: static void settarget(char *, int);
68:
1.1 dm 69: /*
70: * Cat "string" onto the target buffer with error checking.
71: */
1.14 millert 72: static int
73: cattarget(char *string)
1.1 dm 74: {
75: if (strlen(string) + strlen(target) + 2 > sizeof(target)) {
76: message(MT_INFO, "target buffer is not large enough.");
77: return(-1);
78: }
79: if (!ptarget) {
80: message(MT_INFO, "NULL target pointer set.");
81: return(-10);
82: }
83:
1.14 millert 84: (void) snprintf(ptarget, sizeof(target) - (ptarget - target),
85: "/%s", string);
1.1 dm 86:
87: return(0);
88: }
89:
90: /*
91: * Set uid and gid ownership of a file.
92: */
1.14 millert 93: static int
94: setownership(char *file, int fd, UID_T uid, GID_T gid, int link)
1.1 dm 95: {
96: int status = -1;
97:
98: /*
99: * We assume only the Superuser can change uid ownership.
100: */
1.14 millert 101: if (getuid() != 0)
102: uid = -1;
103:
104: /*
105: * If we are dealing with a symlink, only try to change it if
106: * we have lchown, if we don't leave it alone.
107: */
108: #if defined(HAVE_LCHOWN)
109: if (link)
110: status = lchown(file, (CHOWN_UID_T) uid,
111: (CHOWN_GID_T) gid);
112: #else
113: if (link)
114: return 0;
1.1 dm 115: #endif
1.14 millert 116:
1.1 dm 117: #if defined(HAVE_FCHOWN)
1.14 millert 118: if (fd != -1 && !link)
119: status = fchown(fd, (CHOWN_UID_T) uid,
120: (CHOWN_GID_T) gid);
1.1 dm 121: #endif
1.14 millert 122: if (status < 0 && !link)
123: status = chown(file, (CHOWN_UID_T) uid,
124: (CHOWN_GID_T) gid);
1.1 dm 125:
1.14 millert 126: if (status < 0) {
127: if (uid == (UID_T) -1)
1.1 dm 128: message(MT_NOTICE, "%s: chgrp %d failed: %s",
1.14 millert 129: target, gid, SYSERR);
130: else
131: message(MT_NOTICE, "%s: chown %d.%d failed: %s",
132: target, uid, gid, SYSERR);
133: return(-1);
1.1 dm 134: }
135:
136: return(0);
137: }
138:
139: /*
140: * Set mode of a file
141: */
1.14 millert 142: static int
143: setfilemode(char *file, int fd, int mode, int link)
1.1 dm 144: {
145: int status = -1;
146:
147: if (mode == -1)
148: return(0);
149:
1.14 millert 150: /*
151: * If we are dealing with a symlink, only try to change it if
152: * we have lchown, if we don't leave it alone.
153: */
154: #if defined(HAVE_LCHMOD)
155: if (link)
156: status = lchmod(file, mode);
157: #else
158: if (link)
159: return 0;
160: #endif
161:
1.1 dm 162: #if defined(HAVE_FCHMOD)
1.14 millert 163: if (fd != -1 && !link)
1.1 dm 164: status = fchmod(fd, mode);
165: #endif
166:
1.14 millert 167: if (status < 0 && !link)
1.1 dm 168: status = chmod(file, mode);
169:
170: if (status < 0) {
171: message(MT_NOTICE, "%s: chmod failed: %s", target, SYSERR);
172: return(-1);
173: }
174:
175: return(0);
176: }
177: /*
178: * Change owner, group and mode of file.
179: */
1.14 millert 180: static int
181: fchog(int fd, char *file, char *owner, char *group, int mode)
1.1 dm 182: {
1.14 millert 183: static struct group *gr = NULL;
1.1 dm 184: extern char *locuser;
1.10 mpech 185: int i;
1.14 millert 186: struct stat st;
1.1 dm 187: UID_T uid;
188: GID_T gid;
189: GID_T primegid = (GID_T)-2;
190:
191: uid = userid;
192: if (userid == 0) { /* running as root; take anything */
193: if (*owner == ':') {
194: uid = (UID_T) atoi(owner + 1);
1.14 millert 195: } else if (pw == NULL || strcmp(owner, pw->pw_name) != 0) {
1.1 dm 196: if ((pw = getpwnam(owner)) == NULL) {
197: if (mode != -1 && IS_ON(mode, S_ISUID)) {
198: message(MT_NOTICE,
199: "%s: unknown login name \"%s\", clearing setuid",
200: target, owner);
201: mode &= ~S_ISUID;
202: uid = 0;
203: } else
204: message(MT_NOTICE,
205: "%s: unknown login name \"%s\"",
206: target, owner);
1.14 millert 207: } else
208: uid = pw->pw_uid;
1.1 dm 209: } else {
1.14 millert 210: uid = pw->pw_uid;
211: primegid = pw->pw_gid;
1.1 dm 212: }
213: if (*group == ':') {
214: gid = (GID_T) atoi(group + 1);
215: goto ok;
216: }
217: } else { /* not root, setuid only if user==owner */
218: struct passwd *lupw;
219:
220: if (mode != -1) {
221: if (IS_ON(mode, S_ISUID) &&
222: strcmp(locuser, owner) != 0)
223: mode &= ~S_ISUID;
224: if (mode)
225: mode &= ~S_ISVTX; /* and strip sticky too */
226: }
227:
228: if ((lupw = getpwnam(locuser)) != NULL)
229: primegid = lupw->pw_gid;
230: }
231:
232: gid = (GID_T) -1;
1.14 millert 233: if (gr == NULL || strcmp(group, gr->gr_name) != 0) {
234: if ((*group == ':' &&
235: (getgrgid(gid = atoi(group + 1)) == NULL))
236: || ((gr = (struct group *)getgrnam(group)) == NULL)) {
1.1 dm 237: if (mode != -1 && IS_ON(mode, S_ISGID)) {
238: message(MT_NOTICE,
239: "%s: unknown group \"%s\", clearing setgid",
240: target, group);
241: mode &= ~S_ISGID;
242: } else
243: message(MT_NOTICE,
244: "%s: unknown group \"%s\"",
245: target, group);
1.14 millert 246: } else
247: gid = gr->gr_gid;
248: } else
249: gid = gr->gr_gid;
1.1 dm 250:
251: if (userid && gid >= 0 && gid != primegid) {
252: if (gr)
253: for (i = 0; gr->gr_mem[i] != NULL; i++)
1.14 millert 254: if (strcmp(locuser, gr->gr_mem[i]) == 0)
1.1 dm 255: goto ok;
256: if (mode != -1 && IS_ON(mode, S_ISGID)) {
257: message(MT_NOTICE,
258: "%s: user %s not in group %s, clearing setgid",
259: target, locuser, group);
260: mode &= ~S_ISGID;
261: }
262: gid = (GID_T) -1;
263: }
264: ok:
1.14 millert 265: if (stat(file, &st) == -1) {
266: error("%s: Stat failed %s", file, SYSERR);
267: return -1;
268: }
1.1 dm 269: /*
270: * Set uid and gid ownership. If that fails, strip setuid and
271: * setgid bits from mode. Once ownership is set, successful
272: * or otherwise, set the new file mode.
273: */
1.14 millert 274: if (setownership(file, fd, uid, gid, S_ISLNK(st.st_mode)) < 0) {
1.1 dm 275: if (mode != -1 && IS_ON(mode, S_ISUID)) {
276: message(MT_NOTICE,
277: "%s: chown failed, clearing setuid", target);
278: mode &= ~S_ISUID;
279: }
280: if (mode != -1 && IS_ON(mode, S_ISGID)) {
281: message(MT_NOTICE,
282: "%s: chown failed, clearing setgid", target);
283: mode &= ~S_ISGID;
284: }
285: }
1.14 millert 286: (void) setfilemode(file, fd, mode, S_ISLNK(st.st_mode));
1.1 dm 287:
288:
289: return(0);
290: }
291:
292: /*
293: * Remove a file or directory (recursively) and send back an acknowledge
294: * or an error message.
295: */
1.14 millert 296: static int
297: removefile(struct stat *statb, int silent)
1.1 dm 298: {
299: DIR *d;
300: static DIRENTRY *dp;
1.10 mpech 301: char *cp;
1.1 dm 302: struct stat stb;
303: char *optarget;
304: int len, failures = 0;
305:
306: switch (statb->st_mode & S_IFMT) {
307: case S_IFREG:
308: case S_IFLNK:
1.14 millert 309: case S_IFCHR:
310: case S_IFBLK:
311: #ifdef S_IFSOCK
312: case S_IFSOCK:
313: #endif
314: #ifdef S_IFIFO
315: case S_IFIFO:
316: #endif
1.1 dm 317: if (unlink(target) < 0) {
318: if (errno == ETXTBSY) {
1.14 millert 319: if (!silent)
320: message(MT_REMOTE|MT_NOTICE,
321: "%s: unlink failed: %s",
322: target, SYSERR);
1.1 dm 323: return(0);
324: } else {
325: error("%s: unlink failed: %s", target, SYSERR);
326: return(-1);
327: }
328: }
329: goto removed;
330:
331: case S_IFDIR:
332: break;
333:
334: default:
335: error("%s: not a plain file", target);
336: return(-1);
337: }
338:
339: errno = 0;
340: if ((d = opendir(target)) == NULL) {
341: error("%s: opendir failed: %s", target, SYSERR);
342: return(-1);
343: }
344:
345: optarget = ptarget;
346: len = ptarget - target;
1.14 millert 347: while ((dp = readdir(d)) != NULL) {
1.1 dm 348: if ((D_NAMLEN(dp) == 1 && dp->d_name[0] == '.') ||
349: (D_NAMLEN(dp) == 2 && dp->d_name[0] == '.' &&
350: dp->d_name[1] == '.'))
351: continue;
352:
353: if (len + 1 + (int)strlen(dp->d_name) >= MAXPATHLEN - 1) {
1.14 millert 354: if (!silent)
355: message(MT_REMOTE|MT_WARNING,
356: "%s/%s: Name too long",
357: target, dp->d_name);
1.1 dm 358: continue;
359: }
360: ptarget = optarget;
361: *ptarget++ = '/';
1.17 otto 362: cp = dp->d_name;
1.14 millert 363: while ((*ptarget++ = *cp++) != '\0')
364: continue;
1.1 dm 365: ptarget--;
366: if (lstat(target, &stb) < 0) {
1.14 millert 367: if (!silent)
368: message(MT_REMOTE|MT_WARNING,
369: "%s: lstat failed: %s",
370: target, SYSERR);
1.1 dm 371: continue;
372: }
1.14 millert 373: if (removefile(&stb, 0) < 0)
1.1 dm 374: ++failures;
375: }
376: (void) closedir(d);
377: ptarget = optarget;
378: *ptarget = CNULL;
379:
380: if (failures)
381: return(-1);
382:
383: if (rmdir(target) < 0) {
384: error("%s: rmdir failed: %s", target, SYSERR);
385: return(-1);
386: }
387: removed:
1.14 millert 388: #if NEWWAY
389: if (!silent)
390: message(MT_CHANGE|MT_REMOTE, "%s: removed", target);
391: #else
1.5 millert 392: /*
393: * We use MT_NOTICE instead of MT_CHANGE because this function is
394: * sometimes called by other functions that are suppose to return a
395: * single ack() back to the client (rdist). This is a kludge until
396: * the Rdist protocol is re-done. Sigh.
397: */
398: message(MT_NOTICE|MT_REMOTE, "%s: removed", target);
1.14 millert 399: #endif
1.1 dm 400: return(0);
401: }
402:
403: /*
404: * Check the current directory (initialized by the 'T' command to server())
405: * for extraneous files and remove them.
406: */
1.14 millert 407: static void
408: doclean(char *cp)
1.1 dm 409: {
410: DIR *d;
1.10 mpech 411: DIRENTRY *dp;
1.1 dm 412: struct stat stb;
413: char *optarget, *ep;
414: int len;
415: opt_t opts;
1.14 millert 416: char targ[MAXPATHLEN*4];
1.1 dm 417:
418: opts = strtol(cp, &ep, 8);
419: if (*ep != CNULL) {
420: error("clean: options not delimited");
421: return;
422: }
423: if ((d = opendir(target)) == NULL) {
424: error("%s: opendir failed: %s", target, SYSERR);
425: return;
426: }
427: ack();
428:
429: optarget = ptarget;
430: len = ptarget - target;
1.14 millert 431: while ((dp = readdir(d)) != NULL) {
1.1 dm 432: if ((D_NAMLEN(dp) == 1 && dp->d_name[0] == '.') ||
433: (D_NAMLEN(dp) == 2 && dp->d_name[0] == '.' &&
434: dp->d_name[1] == '.'))
435: continue;
436:
437: if (len + 1 + (int)strlen(dp->d_name) >= MAXPATHLEN - 1) {
438: message(MT_REMOTE|MT_WARNING, "%s/%s: Name too long",
439: target, dp->d_name);
440: continue;
441: }
442: ptarget = optarget;
443: *ptarget++ = '/';
1.17 otto 444: cp = dp->d_name;
1.14 millert 445: while ((*ptarget++ = *cp++) != '\0')
446: continue;
1.1 dm 447: ptarget--;
448: if (lstat(target, &stb) < 0) {
449: message(MT_REMOTE|MT_WARNING, "%s: lstat failed: %s",
450: target, SYSERR);
451: continue;
452: }
453:
1.14 millert 454: ENCODE(targ, dp->d_name);
455: (void) sendcmd(CC_QUERY, "%s", targ);
1.1 dm 456: (void) remline(cp = buf, sizeof(buf), TRUE);
457:
458: if (*cp != CC_YES)
459: continue;
460:
461: if (IS_ON(opts, DO_VERIFY))
462: message(MT_REMOTE|MT_INFO, "%s: need to remove",
463: target);
464: else
1.14 millert 465: (void) removefile(&stb, 0);
1.1 dm 466: }
467: (void) closedir(d);
468:
469: ptarget = optarget;
470: *ptarget = CNULL;
471: }
472:
473: /*
474: * Frontend to doclean().
475: */
1.14 millert 476: static void
477: clean(char *cp)
1.1 dm 478: {
479: doclean(cp);
480: (void) sendcmd(CC_END, NULL);
481: (void) response();
482: }
483:
484: /*
485: * Execute a shell command to handle special cases.
486: * We can't really set an alarm timeout here since we
487: * have no idea how long the command should take.
488: */
1.14 millert 489: static void
490: dospecial(char *xcmd)
1.1 dm 491: {
1.14 millert 492: char cmd[BUFSIZ];
493: if (DECODE(cmd, xcmd) == -1) {
494: error("dospecial: Cannot decode command.");
495: return;
496: }
1.1 dm 497: runcommand(cmd);
498: }
499:
500: /*
501: * Do a special cmd command. This differs from normal special
502: * commands in that it's done after an entire command has been updated.
503: * The list of updated target files is sent one at a time with RC_FILE
504: * commands. Each one is added to an environment variable defined by
505: * E_FILES. When an RC_COMMAND is finally received, the E_FILES variable
506: * is stuffed into our environment and a normal dospecial() command is run.
507: */
1.14 millert 508: static void
509: docmdspecial(void)
1.1 dm 510: {
1.10 mpech 511: char *cp;
1.1 dm 512: char *cmd, *env = NULL;
513: int n;
1.13 millert 514: size_t len;
1.1 dm 515:
516: /* We're ready */
517: ack();
518:
519: for ( ; ; ) {
520: n = remline(cp = buf, sizeof(buf), FALSE);
521: if (n <= 0) {
522: error("cmdspecial: premature end of input.");
523: return;
524: }
525:
526: switch (*cp++) {
527: case RC_FILE:
528: if (env == NULL) {
529: len = (2 * sizeof(E_FILES)) + strlen(cp) + 10;
530: env = (char *) xmalloc(len);
1.11 deraadt 531: (void) snprintf(env, len, "export %s;%s=%s",
1.1 dm 532: E_FILES, E_FILES, cp);
533: } else {
1.13 millert 534: len = strlen(env) + 1 + strlen(cp) + 1;
535: env = (char *) xrealloc(env, len);
536: (void) strlcat(env, ":", len);
537: (void) strlcat(env, cp, len);
1.1 dm 538: }
539: ack();
540: break;
541:
542: case RC_COMMAND:
543: if (env) {
1.13 millert 544: len = strlen(env) + 1 + strlen(cp) + 1;
545: env = (char *) xrealloc(env, len);
546: (void) strlcat(env, ";", len);
547: (void) strlcat(env, cp, len);
1.1 dm 548: cmd = env;
549: } else
550: cmd = cp;
551:
552: dospecial(cmd);
553: if (env)
554: (void) free(env);
555: return;
556:
557: default:
558: error("Unknown cmdspecial command '%s'.", cp);
559: return;
560: }
561: }
562: }
563:
564: /*
565: * Query. Check to see if file exists. Return one of the following:
566: *
567: #ifdef NFS_CHECK
568: * QC_ONNFS - resides on a NFS
569: #endif NFS_CHECK
570: #ifdef RO_CHECK
571: * QC_ONRO - resides on a Read-Only filesystem
572: #endif RO_CHECK
573: * QC_NO - doesn't exist
574: * QC_YESsize mtime - exists and its a regular file (size & mtime of file)
575: * QC_YES - exists and its a directory or symbolic link
576: * QC_ERRMSGmessage - error message
577: */
1.14 millert 578: static void
579: query(char *xname)
1.1 dm 580: {
581: static struct stat stb;
582: int s = -1, stbvalid = 0;
1.14 millert 583: char name[MAXPATHLEN];
584:
585: if (DECODE(name, xname) == -1) {
586: error("query: Cannot decode filename");
587: return;
588: }
1.1 dm 589:
590: if (catname && cattarget(name) < 0)
591: return;
592:
593: #if defined(NFS_CHECK)
594: if (IS_ON(options, DO_CHKNFS)) {
595: s = is_nfs_mounted(target, &stb, &stbvalid);
596: if (s > 0)
597: (void) sendcmd(QC_ONNFS, NULL);
598:
1.9 mpech 599: /* Either the above check was true or an error occurred */
1.1 dm 600: /* and is_nfs_mounted sent the error message */
601: if (s != 0) {
602: *ptarget = CNULL;
603: return;
604: }
605: }
606: #endif /* NFS_CHECK */
607:
608: #if defined(RO_CHECK)
609: if (IS_ON(options, DO_CHKREADONLY)) {
610: s = is_ro_mounted(target, &stb, &stbvalid);
611: if (s > 0)
612: (void) sendcmd(QC_ONRO, NULL);
613:
1.9 mpech 614: /* Either the above check was true or an error occurred */
1.1 dm 615: /* and is_ro_mounted sent the error message */
616: if (s != 0) {
617: *ptarget = CNULL;
618: return;
619: }
620: }
621: #endif /* RO_CHECK */
622:
623: if (IS_ON(options, DO_CHKSYM)) {
624: if (is_symlinked(target, &stb, &stbvalid) > 0) {
625: (void) sendcmd(QC_SYM, NULL);
626: return;
627: }
628: }
629:
630: /*
631: * If stbvalid is false, "stb" is not valid because:
632: * a) RO_CHECK and NFS_CHECK were not defined
633: * b) The stat by is_*_mounted() either failed or
634: * does not match "target".
635: */
636: if (!stbvalid && lstat(target, &stb) < 0) {
637: if (errno == ENOENT)
638: (void) sendcmd(QC_NO, NULL);
639: else
640: error("%s: lstat failed: %s", target, SYSERR);
641: *ptarget = CNULL;
642: return;
643: }
644:
645: switch (stb.st_mode & S_IFMT) {
646: case S_IFLNK:
647: case S_IFDIR:
648: case S_IFREG:
1.14 millert 649: #ifdef notyet
650: case S_IFCHR:
651: case S_IFBLK:
652: #ifdef S_IFSOCK
653: case S_IFSOCK:
654: #endif
655: #ifdef S_IFIFO
656: case S_IFIFO:
657: #endif
658: #endif
1.22 ! krw 659: (void) sendcmd(QC_YES, "%lld %ld %o %s %s",
! 660: (long long) stb.st_size, stb.st_mtime,
1.1 dm 661: stb.st_mode & 07777,
662: getusername(stb.st_uid, target, options),
663: getgroupname(stb.st_gid, target, options));
664: break;
665:
666: default:
667: error("%s: not a file or directory", target);
668: break;
669: }
670: *ptarget = CNULL;
671: }
672:
673: /*
674: * Check to see if parent directory exists and create one if not.
675: */
1.14 millert 676: static int
677: chkparent(char *name, opt_t opts)
1.1 dm 678: {
1.10 mpech 679: char *cp;
1.1 dm 680: struct stat stb;
681: int r = -1;
682:
683: debugmsg(DM_CALL, "chkparent(%s, %o) start\n", name, opts);
684:
685: cp = strrchr(name, '/');
686: if (cp == NULL || cp == name)
687: return(0);
688:
689: *cp = CNULL;
690:
691: if (lstat(name, &stb) < 0) {
692: if (errno == ENOENT && chkparent(name, opts) >= 0) {
693: if (mkdir(name, 0777 & ~oumask) == 0) {
694: message(MT_NOTICE, "%s: mkdir", name);
695: r = 0;
696: } else
697: debugmsg(DM_MISC,
698: "chkparent(%s, %o) mkdir fail: %s\n",
699: name, opts, SYSERR);
700: }
701: } else /* It exists */
702: r = 0;
703:
704: /* Put back what we took away */
705: *cp = '/';
706:
707: return(r);
708: }
709:
710: /*
711: * Save a copy of 'file' by renaming it.
712: */
1.14 millert 713: static char *
714: savetarget(char *file, opt_t opts)
1.1 dm 715: {
716: static char savefile[MAXPATHLEN];
717:
718: if (strlen(file) + sizeof(SAVE_SUFFIX) + 1 > MAXPATHLEN) {
719: error("%s: Cannot save: Save name too long", file);
1.7 millert 720: return(NULL);
1.1 dm 721: }
722:
1.14 millert 723: if (IS_ON(opts, DO_HISTORY)) {
724: int i;
725: struct stat st;
726: /*
727: * There is a race here, but the worst that can happen
728: * is to lose a version of the file
729: */
730: for (i = 1; i < 1000; i++) {
731: (void) snprintf(savefile, sizeof(savefile),
732: "%s;%.3d", file, i);
733: if (stat(savefile, &st) == -1 && errno == ENOENT)
734: break;
1.1 dm 735:
1.14 millert 736: }
737: if (i == 1000) {
738: message(MT_NOTICE,
739: "%s: More than 1000 versions for %s; reusing 1\n",
740: savefile, SYSERR);
741: i = 1;
742: (void) snprintf(savefile, sizeof(savefile),
743: "%s;%.3d", file, i);
744: }
745: }
746: else {
747: (void) snprintf(savefile, sizeof(savefile), "%s%s",
748: file, SAVE_SUFFIX);
749:
750: if (unlink(savefile) != 0 && errno != ENOENT) {
751: message(MT_NOTICE, "%s: remove failed: %s",
752: savefile, SYSERR);
753: return(NULL);
754: }
1.1 dm 755: }
756:
757: if (rename(file, savefile) != 0 && errno != ENOENT) {
758: error("%s -> %s: rename failed: %s",
759: file, savefile, SYSERR);
1.7 millert 760: return(NULL);
1.1 dm 761: }
762:
763: return(savefile);
764: }
765:
766: /*
767: * Receive a file
768: */
1.14 millert 769: static void
1.19 millert 770: recvfile(char *new, opt_t opts, int mode, char *owner, char *group,
771: time_t mtime, time_t atime, off_t size)
1.1 dm 772: {
1.19 millert 773: int f, wrerr, olderrno;
1.1 dm 774: off_t i;
1.10 mpech 775: char *cp;
1.1 dm 776: char *savefile = NULL;
1.5 millert 777: static struct stat statbuff;
1.1 dm 778:
779: /*
1.19 millert 780: * Create temporary file
781: */
782: if ((f = mkstemp(new)) < 0) {
783: if (errno != ENOENT || chkparent(new, opts) < 0 ||
784: (f = mkstemp(new)) < 0) {
785: error("%s: create failed: %s", new, SYSERR);
786: return;
787: }
788: }
789:
790: /*
1.1 dm 791: * Receive the file itself
792: */
793: ack();
794: wrerr = 0;
795: olderrno = 0;
796: for (i = 0; i < size; i += BUFSIZ) {
1.22 ! krw 797: off_t amt = BUFSIZ;
1.1 dm 798:
799: cp = buf;
800: if (i + amt > size)
801: amt = size - i;
802: do {
1.22 ! krw 803: ssize_t j;
1.1 dm 804:
805: j = readrem(cp, amt);
806: if (j <= 0) {
807: (void) close(f);
808: (void) unlink(new);
809: fatalerr(
1.9 mpech 810: "Read error occurred while receiving file.");
1.1 dm 811: finish();
812: }
813: amt -= j;
814: cp += j;
815: } while (amt > 0);
816: amt = BUFSIZ;
817: if (i + amt > size)
818: amt = size - i;
1.14 millert 819: if (wrerr == 0 && xwrite(f, buf, amt) != amt) {
1.1 dm 820: olderrno = errno;
821: wrerr++;
822: }
823: }
824:
825: if (response() < 0) {
826: (void) close(f);
827: (void) unlink(new);
828: return;
829: }
1.2 dm 830:
1.1 dm 831: if (wrerr) {
832: error("%s: Write error: %s", new, strerror(olderrno));
833: (void) close(f);
834: (void) unlink(new);
835: return;
836: }
837:
838: /*
839: * Do file comparison if enabled
840: */
841: if (IS_ON(opts, DO_COMPARE)) {
842: FILE *f1, *f2;
843: int c;
844:
845: errno = 0; /* fopen is not a syscall */
846: if ((f1 = fopen(target, "r")) == NULL) {
847: error("%s: open for read failed: %s", target, SYSERR);
848: (void) close(f);
849: (void) unlink(new);
850: return;
851: }
852: errno = 0;
853: if ((f2 = fopen(new, "r")) == NULL) {
854: error("%s: open for read failed: %s", new, SYSERR);
1.14 millert 855: (void) fclose(f1);
1.1 dm 856: (void) close(f);
857: (void) unlink(new);
858: return;
859: }
860: while ((c = getc(f1)) == getc(f2))
861: if (c == EOF) {
862: debugmsg(DM_MISC,
863: "Files are the same '%s' '%s'.",
864: target, new);
865: (void) fclose(f1);
866: (void) fclose(f2);
867: (void) close(f);
868: (void) unlink(new);
869: /*
870: * This isn't an error per-se, but we
871: * need to indicate to the master that
872: * the file was not updated.
873: */
874: error("");
875: return;
876: }
877: debugmsg(DM_MISC, "Files are different '%s' '%s'.",
878: target, new);
879: (void) fclose(f1);
880: (void) fclose(f2);
881: if (IS_ON(opts, DO_VERIFY)) {
882: message(MT_REMOTE|MT_INFO, "%s: need to update",
883: target);
884: (void) close(f);
885: (void) unlink(new);
886: return;
887: }
888: }
889:
890: /*
891: * Set owner, group, and file mode
892: */
893: if (fchog(f, new, owner, group, mode) < 0) {
894: (void) close(f);
895: (void) unlink(new);
896: return;
897: }
898: (void) close(f);
899:
900: /*
901: * Perform utimes() after file is closed to make
902: * certain OS's, such as NeXT 2.1, happy.
903: */
904: if (setfiletime(new, time((time_t *) 0), mtime) < 0)
905: message(MT_NOTICE, "%s: utimes failed: %s", new, SYSERR);
906:
907: /*
908: * Try to save target file from being over-written
909: */
910: if (IS_ON(opts, DO_SAVETARGETS))
1.14 millert 911: if ((savefile = savetarget(target, opts)) == NULL) {
1.1 dm 912: (void) unlink(new);
913: return;
914: }
915:
916: /*
1.5 millert 917: * If the target is a directory, we need to remove it first
918: * before we can rename the new file.
919: */
920: if ((stat(target, &statbuff) == 0) && S_ISDIR(statbuff.st_mode)) {
921: char *saveptr = ptarget;
922:
923: ptarget = &target[strlen(target)];
1.14 millert 924: removefile(&statbuff, 0);
1.5 millert 925: ptarget = saveptr;
926: }
927:
928: /*
1.1 dm 929: * Install new (temporary) file as the actual target
930: */
931: if (rename(new, target) < 0) {
1.14 millert 932: static char fmt[] = "%s -> %s: rename failed: %s";
933: struct stat stb;
1.1 dm 934: /*
935: * If the rename failed due to "Text file busy", then
936: * try to rename the target file and retry the rename.
937: */
1.14 millert 938: switch (errno) {
939: case ETXTBSY:
1.1 dm 940: /* Save the target */
1.14 millert 941: if ((savefile = savetarget(target, opts)) != NULL) {
1.1 dm 942: /* Retry installing new file as target */
943: if (rename(new, target) < 0) {
1.14 millert 944: error(fmt, new, target, SYSERR);
1.1 dm 945: /* Try to put back save file */
946: if (rename(savefile, target) < 0)
1.14 millert 947: error(fmt,
948: savefile, target, SYSERR);
949: (void) unlink(new);
1.1 dm 950: } else
951: message(MT_NOTICE, "%s: renamed to %s",
952: target, savefile);
1.14 millert 953: /*
954: * XXX: We should remove the savefile here.
955: * But we are nice to nfs clients and
956: * we keep it.
957: */
958: }
959: break;
960: case EISDIR:
961: /*
962: * See if target is a directory and remove it if it is
963: */
964: if (lstat(target, &stb) == 0) {
965: if (S_ISDIR(stb.st_mode)) {
966: char *optarget = ptarget;
967: for (ptarget = target; *ptarget;
968: ptarget++);
969: /* If we failed to remove, we'll catch
970: it later */
971: (void) removefile(&stb, 1);
972: ptarget = optarget;
973: }
1.1 dm 974: }
1.14 millert 975: if (rename(new, target) >= 0)
976: break;
977: /*FALLTHROUGH*/
978:
979: default:
980: error(fmt, new, target, SYSERR);
1.1 dm 981: (void) unlink(new);
1.14 millert 982: break;
1.1 dm 983: }
984: }
985:
986: if (IS_ON(opts, DO_COMPARE))
987: message(MT_REMOTE|MT_CHANGE, "%s: updated", target);
988: else
989: ack();
990: }
991:
992: /*
993: * Receive a directory
994: */
1.14 millert 995: static void
996: recvdir(opt_t opts, int mode, char *owner, char *group)
1.1 dm 997: {
998: static char lowner[100], lgroup[100];
1.10 mpech 999: char *cp;
1.1 dm 1000: struct stat stb;
1001: int s;
1002:
1003: s = lstat(target, &stb);
1004: if (s == 0) {
1005: /*
1006: * If target is not a directory, remove it
1007: */
1008: if (!S_ISDIR(stb.st_mode)) {
1009: if (IS_ON(opts, DO_VERIFY))
1010: message(MT_NOTICE, "%s: need to remove",
1011: target);
1012: else {
1013: if (unlink(target) < 0) {
1014: error("%s: remove failed: %s",
1015: target, SYSERR);
1016: return;
1017: }
1018: }
1019: s = -1;
1020: errno = ENOENT;
1021: } else {
1022: if (!IS_ON(opts, DO_NOCHKMODE) &&
1023: (stb.st_mode & 07777) != mode) {
1024: if (IS_ON(opts, DO_VERIFY))
1025: message(MT_NOTICE,
1026: "%s: need to chmod to %o",
1027: target, mode);
1028: else {
1029: if (chmod(target, mode) != 0)
1030: message(MT_NOTICE,
1031: "%s: chmod from %o to %o failed: %s",
1032: target,
1033: stb.st_mode & 07777,
1034: mode,
1035: SYSERR);
1036: else
1037: message(MT_NOTICE,
1038: "%s: chmod from %o to %o",
1039: target,
1040: stb.st_mode & 07777,
1041: mode);
1042: }
1043: }
1044:
1045: /*
1046: * Check ownership and set if necessary
1047: */
1048: lowner[0] = CNULL;
1049: lgroup[0] = CNULL;
1050:
1051: if (!IS_ON(opts, DO_NOCHKOWNER) && owner) {
1052: int o;
1053:
1054: o = (owner[0] == ':') ? opts & DO_NUMCHKOWNER :
1055: opts;
1.14 millert 1056: if ((cp = getusername(stb.st_uid, target, o))
1057: != NULL)
1.1 dm 1058: if (strcmp(owner, cp))
1.11 deraadt 1059: (void) strlcpy(lowner, cp,
1.14 millert 1060: sizeof(lowner));
1.1 dm 1061: }
1062: if (!IS_ON(opts, DO_NOCHKGROUP) && group) {
1063: int o;
1064:
1065: o = (group[0] == ':') ? opts & DO_NUMCHKGROUP :
1066: opts;
1.14 millert 1067: if ((cp = getgroupname(stb.st_gid, target, o))
1068: != NULL)
1.1 dm 1069: if (strcmp(group, cp))
1.11 deraadt 1070: (void) strlcpy(lgroup, cp,
1.14 millert 1071: sizeof(lgroup));
1.1 dm 1072: }
1073:
1074: /*
1075: * Need to set owner and/or group
1076: */
1077: #define PRN(n) ((n[0] == ':') ? n+1 : n)
1078: if (lowner[0] != CNULL || lgroup[0] != CNULL) {
1079: if (lowner[0] == CNULL &&
1080: (cp = getusername(stb.st_uid,
1081: target, opts)))
1.11 deraadt 1082: (void) strlcpy(lowner, cp,
1.14 millert 1083: sizeof(lowner));
1.1 dm 1084: if (lgroup[0] == CNULL &&
1085: (cp = getgroupname(stb.st_gid,
1086: target, opts)))
1.11 deraadt 1087: (void) strlcpy(lgroup, cp,
1.14 millert 1088: sizeof(lgroup));
1.1 dm 1089:
1090: if (IS_ON(opts, DO_VERIFY))
1091: message(MT_NOTICE,
1.12 millert 1092: "%s: need to chown from %s:%s to %s:%s",
1.1 dm 1093: target,
1094: PRN(lowner), PRN(lgroup),
1095: PRN(owner), PRN(group));
1096: else {
1097: if (fchog(-1, target, owner,
1098: group, -1) == 0)
1099: message(MT_NOTICE,
1.12 millert 1100: "%s: chown from %s:%s to %s:%s",
1.1 dm 1101: target,
1102: PRN(lowner),
1103: PRN(lgroup),
1104: PRN(owner),
1105: PRN(group));
1106: }
1107: }
1108: #undef PRN
1109: ack();
1110: return;
1111: }
1112: }
1113:
1114: if (IS_ON(opts, DO_VERIFY)) {
1115: ack();
1116: return;
1117: }
1118:
1119: /*
1120: * Create the directory
1121: */
1122: if (s < 0) {
1123: if (errno == ENOENT) {
1124: if (mkdir(target, mode) == 0 ||
1.7 millert 1125: (chkparent(target, opts) == 0 &&
1126: mkdir(target, mode) == 0)) {
1.1 dm 1127: message(MT_NOTICE, "%s: mkdir", target);
1128: (void) fchog(-1, target, owner, group, mode);
1129: ack();
1130: } else {
1131: error("%s: mkdir failed: %s", target, SYSERR);
1132: ptarget = sptarget[--catname];
1133: *ptarget = CNULL;
1134: }
1135: return;
1136: }
1137: }
1138: error("%s: lstat failed: %s", target, SYSERR);
1139: ptarget = sptarget[--catname];
1140: *ptarget = CNULL;
1141: }
1142:
1143: /*
1144: * Receive a link
1145: */
1.14 millert 1146: static void
1147: recvlink(char *new, opt_t opts, int mode, off_t size)
1.1 dm 1148: {
1.20 deraadt 1149: char tbuf[MAXPATHLEN], dbuf[BUFSIZ];
1.1 dm 1150: struct stat stb;
1151: char *optarget;
1.14 millert 1152: int uptodate;
1.1 dm 1153: off_t i;
1154:
1155: /*
1156: * Read basic link info
1157: */
1158: ack();
1159: (void) remline(buf, sizeof(buf), TRUE);
1160:
1161: if (response() < 0) {
1162: err();
1163: return;
1164: }
1165:
1.20 deraadt 1166: if (DECODE(dbuf, buf) == -1) {
1167: error("recvlink: cannot decode symlink target");
1168: return;
1169: }
1170:
1.14 millert 1171: uptodate = 0;
1.16 mpech 1172: if ((i = readlink(target, tbuf, sizeof(tbuf)-1)) != -1) {
1.14 millert 1173: tbuf[i] = '\0';
1.20 deraadt 1174: if (i == size && strncmp(dbuf, tbuf, (int) size) == 0)
1.14 millert 1175: uptodate = 1;
1176: }
1177: mode &= 0777;
1178:
1179: if (IS_ON(opts, DO_VERIFY) || uptodate) {
1180: if (uptodate)
1181: message(MT_REMOTE|MT_INFO, "");
1182: else
1183: message(MT_REMOTE|MT_INFO, "%s: need to update",
1184: target);
1185: if (IS_ON(opts, DO_COMPARE))
1186: return;
1187: (void) sendcmd(C_END, NULL);
1188: (void) response();
1189: return;
1190: }
1191:
1.1 dm 1192: /*
1193: * Make new symlink using a temporary name
1194: */
1.20 deraadt 1195: if (mktemp(new) == NULL || symlink(dbuf, new) < 0) {
1.1 dm 1196: if (errno != ENOENT || chkparent(new, opts) < 0 ||
1.20 deraadt 1197: mktemp(new) == NULL || symlink(dbuf, new) < 0) {
1198: error("%s -> %s: symlink failed: %s", new, dbuf,
1199: SYSERR);
1.1 dm 1200: return;
1201: }
1202: }
1203:
1204: /*
1205: * See if target is a directory and remove it if it is
1206: */
1207: if (lstat(target, &stb) == 0) {
1208: if (S_ISDIR(stb.st_mode)) {
1209: optarget = ptarget;
1210: for (ptarget = target; *ptarget; ptarget++);
1.14 millert 1211: if (removefile(&stb, 0) < 0) {
1.1 dm 1212: ptarget = optarget;
1213: (void) unlink(new);
1214: (void) sendcmd(C_END, NULL);
1215: (void) response();
1216: return;
1217: }
1218: ptarget = optarget;
1219: }
1220: }
1221:
1222: /*
1223: * Install link as the target
1224: */
1225: if (rename(new, target) < 0) {
1226: error("%s -> %s: symlink rename failed: %s",
1227: new, target, SYSERR);
1228: (void) unlink(new);
1229: (void) sendcmd(C_END, NULL);
1230: (void) response();
1231: return;
1232: }
1233:
1.14 millert 1234: message(MT_REMOTE|MT_CHANGE, "%s: updated", target);
1.1 dm 1235:
1236: /*
1237: * Indicate end of receive operation
1238: */
1239: (void) sendcmd(C_END, NULL);
1240: (void) response();
1241: }
1242:
1243: /*
1244: * Creat a hard link to existing file.
1245: */
1.14 millert 1246: static void
1247: hardlink(char *cmd)
1.1 dm 1248: {
1249: struct stat stb;
1250: int exists = 0;
1.14 millert 1251: char *xoldname, *xnewname;
1.1 dm 1252: char *cp = cmd;
1253: static char expbuf[BUFSIZ];
1.14 millert 1254: char oldname[BUFSIZ], newname[BUFSIZ];
1.1 dm 1255:
1256: /* Skip over opts */
1257: (void) strtol(cp, &cp, 8);
1258: if (*cp++ != ' ') {
1259: error("hardlink: options not delimited");
1260: return;
1261: }
1262:
1.14 millert 1263: xoldname = strtok(cp, " ");
1264: if (xoldname == NULL) {
1.1 dm 1265: error("hardlink: oldname name not delimited");
1266: return;
1267: }
1268:
1.14 millert 1269: if (DECODE(oldname, xoldname) == -1) {
1270: error("hardlink: Cannot decode oldname");
1271: return;
1272: }
1273:
1274: xnewname = strtok(NULL, " ");
1275: if (xnewname == NULL) {
1.1 dm 1276: error("hardlink: new name not specified");
1277: return;
1278: }
1279:
1.14 millert 1280: if (DECODE(newname, xnewname) == -1) {
1281: error("hardlink: Cannot decode newname");
1282: return;
1283: }
1284:
1.13 millert 1285: if (exptilde(expbuf, oldname, sizeof(expbuf)) == NULL) {
1.1 dm 1286: error("hardlink: tilde expansion failed");
1287: return;
1288: }
1289:
1290: if (catname && cattarget(newname) < 0) {
1291: error("Cannot set newname target.");
1292: return;
1293: }
1294:
1295: if (lstat(target, &stb) == 0) {
1296: int mode = stb.st_mode & S_IFMT;
1297:
1298: if (mode != S_IFREG && mode != S_IFLNK) {
1299: error("%s: not a regular file", target);
1300: return;
1301: }
1302: exists = 1;
1303: }
1304:
1305: if (chkparent(target, options) < 0 ) {
1306: error("%s: no parent: %s ", target, SYSERR);
1307: return;
1308: }
1309: if (exists && (unlink(target) < 0)) {
1310: error("%s: unlink failed: %s", target, SYSERR);
1311: return;
1312: }
1.14 millert 1313: if (link(expbuf, target) < 0) {
1.1 dm 1314: error("%s: cannot link to %s: %s", target, oldname, SYSERR);
1315: return;
1316: }
1317: ack();
1318: }
1319:
1320: /*
1321: * Set configuration information.
1322: *
1323: * A key letter is followed immediately by the value
1324: * to set. The keys are:
1325: * SC_FREESPACE - Set minimium free space of filesystem
1326: * SC_FREEFILES - Set minimium free number of files of filesystem
1327: */
1.14 millert 1328: static void
1329: setconfig(char *cmd)
1.1 dm 1330: {
1.10 mpech 1331: char *cp = cmd;
1.1 dm 1332: char *estr;
1.22 ! krw 1333: const char *errstr;
1.1 dm 1334:
1335: switch (*cp++) {
1336: case SC_HOSTNAME: /* Set hostname */
1337: /*
1338: * Only use info if we don't know who this is.
1339: */
1340: if (!fromhost) {
1.8 millert 1341: fromhost = xstrdup(cp);
1.14 millert 1342: message(MT_SYSLOG, "startup for %s", fromhost);
1.7 millert 1343: #if defined(SETARGS) || defined(HAVE_SETPROCTITLE)
1.1 dm 1344: setproctitle("serving %s", cp);
1.7 millert 1345: #endif /* SETARGS || HAVE_SETPROCTITLE */
1.1 dm 1346: }
1347: break;
1348:
1349: case SC_FREESPACE: /* Minimium free space */
1.22 ! krw 1350: min_freespace = (int64_t)strtonum(cp, 0, LLONG_MAX, &errstr);
! 1351: if (errstr)
! 1352: fatalerr("Minimum free space is %s: '%s'", errstr,
! 1353: optarg);
1.1 dm 1354: break;
1355:
1356: case SC_FREEFILES: /* Minimium free files */
1.22 ! krw 1357: min_freefiles = (int64_t)strtonum(cp, 0, LLONG_MAX, &errstr);
! 1358: if (errstr)
! 1359: fatalerr("Minimum free files is %s: '%s'", errstr,
! 1360: optarg);
1.1 dm 1361: break;
1362:
1363: case SC_LOGGING: /* Logging options */
1.14 millert 1364: if ((estr = msgparseopts(cp, TRUE)) != NULL) {
1.1 dm 1365: fatalerr("Bad message option string (%s): %s",
1366: cp, estr);
1367: return;
1368: }
1369: break;
1370:
1.14 millert 1371: case SC_DEFOWNER:
1372: (void) strlcpy(defowner, cp, sizeof(defowner));
1373: break;
1374:
1375: case SC_DEFGROUP:
1376: (void) strlcpy(defgroup, cp, sizeof(defgroup));
1377: break;
1378:
1.1 dm 1379: default:
1380: message(MT_NOTICE, "Unknown config command \"%s\".", cp-1);
1381: return;
1382: }
1383: }
1384:
1385: /*
1386: * Receive something
1387: */
1.14 millert 1388: static void
1389: recvit(char *cmd, int type)
1.1 dm 1390: {
1.19 millert 1391: int mode;
1.1 dm 1392: opt_t opts;
1393: off_t size;
1394: time_t mtime, atime;
1395: char *owner, *group, *file;
1396: char new[MAXPATHLEN];
1.14 millert 1397: char fileb[MAXPATHLEN];
1.22 ! krw 1398: int64_t freespace = -1, freefiles = -1;
1.1 dm 1399: char *cp = cmd;
1400:
1401: /*
1402: * Get rdist option flags
1403: */
1404: opts = strtol(cp, &cp, 8);
1405: if (*cp++ != ' ') {
1406: error("recvit: options not delimited");
1407: return;
1408: }
1409:
1410: /*
1411: * Get file mode
1412: */
1413: mode = strtol(cp, &cp, 8);
1414: if (*cp++ != ' ') {
1415: error("recvit: mode not delimited");
1416: return;
1417: }
1418:
1419: /*
1420: * Get file size
1421: */
1.22 ! krw 1422: size = (off_t) strtoll(cp, &cp, 10);
1.1 dm 1423: if (*cp++ != ' ') {
1424: error("recvit: size not delimited");
1425: return;
1426: }
1427:
1428: /*
1429: * Get modification time
1430: */
1.22 ! krw 1431: mtime = (time_t) strtol(cp, &cp, 10);
1.1 dm 1432: if (*cp++ != ' ') {
1433: error("recvit: mtime not delimited");
1434: return;
1435: }
1436:
1437: /*
1438: * Get access time
1439: */
1440: atime = strtol(cp, &cp, 10);
1441: if (*cp++ != ' ') {
1442: error("recvit: atime not delimited");
1443: return;
1444: }
1445:
1446: /*
1447: * Get file owner name
1448: */
1449: owner = strtok(cp, " ");
1450: if (owner == NULL) {
1451: error("recvit: owner name not delimited");
1452: return;
1453: }
1454:
1455: /*
1456: * Get file group name
1457: */
1.7 millert 1458: group = strtok(NULL, " ");
1.1 dm 1459: if (group == NULL) {
1460: error("recvit: group name not delimited");
1461: return;
1462: }
1463:
1464: /*
1.14 millert 1465: * Get file name. Can't use strtok() since there could
1.1 dm 1466: * be white space in the file name.
1467: */
1.14 millert 1468: if (DECODE(fileb, group + strlen(group) + 1) == -1) {
1469: error("recvit: Cannot decode file name");
1470: return;
1471: }
1472:
1473: if (fileb[0] == '\0') {
1.1 dm 1474: error("recvit: no file name");
1475: return;
1476: }
1.14 millert 1477: file = fileb;
1.1 dm 1478:
1479: debugmsg(DM_MISC,
1.22 ! krw 1480: "recvit: opts = %04o mode = %04o size = %lld mtime = %d",
! 1481: opts, mode, (long long) size, mtime);
1.1 dm 1482: debugmsg(DM_MISC,
1483: "recvit: owner = '%s' group = '%s' file = '%s' catname = %d isdir = %d",
1484: owner, group, file, catname, (type == S_IFDIR) ? 1 : 0);
1485:
1486: if (type == S_IFDIR) {
1.14 millert 1487: if ((size_t) catname >= sizeof(sptarget)) {
1.1 dm 1488: error("%s: too many directory levels", target);
1489: return;
1490: }
1491: sptarget[catname] = ptarget;
1492: if (catname++) {
1493: *ptarget++ = '/';
1.14 millert 1494: while ((*ptarget++ = *file++) != '\0')
1495: continue;
1.1 dm 1496: ptarget--;
1497: }
1498: } else {
1499: /*
1500: * Create name of temporary file
1501: */
1502: if (catname && cattarget(file) < 0) {
1503: error("Cannot set file name.");
1504: return;
1505: }
1506: file = strrchr(target, '/');
1507: if (file == NULL)
1.14 millert 1508: (void) strlcpy(new, tempname, sizeof(new));
1.1 dm 1509: else if (file == target)
1.14 millert 1510: (void) snprintf(new, sizeof(new), "/%s", tempname);
1.1 dm 1511: else {
1512: *file = CNULL;
1.14 millert 1513: (void) snprintf(new, sizeof(new), "%s/%s", target,
1514: tempname);
1.1 dm 1515: *file = '/';
1516: }
1517: }
1518:
1519: /*
1520: * Check to see if there is enough free space and inodes
1521: * to install this file.
1522: */
1523: if (min_freespace || min_freefiles) {
1524: /* Convert file size to kilobytes */
1.22 ! krw 1525: int64_t fsize = (int64_t)size / 1024;
1.1 dm 1526:
1527: if (getfilesysinfo(target, &freespace, &freefiles) != 0)
1528: return;
1529:
1530: /*
1531: * filesystem values < 0 indicate unsupported or unavailable
1532: * information.
1533: */
1534: if (min_freespace && (freespace >= 0) &&
1535: (freespace - fsize < min_freespace)) {
1536: error(
1.22 ! krw 1537: "%s: Not enough free space on filesystem: min %lld "
! 1538: "free %lld", target, min_freespace, freespace);
1.1 dm 1539: return;
1540: }
1541: if (min_freefiles && (freefiles >= 0) &&
1542: (freefiles - 1 < min_freefiles)) {
1543: error(
1.22 ! krw 1544: "%s: Not enough free files on filesystem: min %lld free "
! 1545: "%lld", target, min_freefiles, freefiles);
1.1 dm 1546: return;
1547: }
1548: }
1549:
1550: /*
1551: * Call appropriate receive function to receive file
1552: */
1553: switch (type) {
1554: case S_IFDIR:
1555: recvdir(opts, mode, owner, group);
1556: break;
1557:
1558: case S_IFLNK:
1559: recvlink(new, opts, mode, size);
1560: break;
1561:
1562: case S_IFREG:
1.19 millert 1563: recvfile(new, opts, mode, owner, group, mtime, atime, size);
1.1 dm 1564: break;
1565:
1566: default:
1567: error("%d: unknown file type", type);
1568: break;
1569: }
1570: }
1571:
1572: /*
1.14 millert 1573: * Chmog something
1574: */
1575: static void
1576: dochmog(char *cmd)
1577: {
1578: int mode;
1579: opt_t opts;
1580: char *owner, *group, *file;
1581: char *cp = cmd;
1582: char fileb[MAXPATHLEN];
1583:
1584: /*
1585: * Get rdist option flags
1586: */
1587: opts = strtol(cp, &cp, 8);
1588: if (*cp++ != ' ') {
1589: error("dochmog: options not delimited");
1590: return;
1591: }
1592:
1593: /*
1594: * Get file mode
1595: */
1596: mode = strtol(cp, &cp, 8);
1597: if (*cp++ != ' ') {
1598: error("dochmog: mode not delimited");
1599: return;
1600: }
1601:
1602: /*
1603: * Get file owner name
1604: */
1605: owner = strtok(cp, " ");
1606: if (owner == NULL) {
1607: error("dochmog: owner name not delimited");
1608: return;
1609: }
1610:
1611: /*
1612: * Get file group name
1613: */
1614: group = strtok(NULL, " ");
1615: if (group == NULL) {
1616: error("dochmog: group name not delimited");
1617: return;
1618: }
1619:
1620: /*
1621: * Get file name. Can't use strtok() since there could
1622: * be white space in the file name.
1623: */
1624: if (DECODE(fileb, group + strlen(group) + 1) == -1) {
1625: error("dochmog: Cannot decode file name");
1626: return;
1627: }
1628:
1629: if (fileb[0] == '\0') {
1630: error("dochmog: no file name");
1631: return;
1632: }
1633: file = fileb;
1634:
1635: debugmsg(DM_MISC,
1636: "dochmog: opts = %04o mode = %04o", opts, mode);
1637: debugmsg(DM_MISC,
1638: "dochmog: owner = '%s' group = '%s' file = '%s' catname = %d",
1639: owner, group, file, catname);
1640:
1641: if (catname && cattarget(file) < 0) {
1642: error("Cannot set newname target.");
1643: return;
1644: }
1645:
1646: (void) fchog(-1, target, owner, group, mode);
1647:
1648: ack();
1649: }
1650:
1651: /*
1.1 dm 1652: * Set target information
1653: */
1.14 millert 1654: static void
1655: settarget(char *cmd, int isdir)
1.1 dm 1656: {
1657: char *cp = cmd;
1658: opt_t opts;
1.14 millert 1659: char file[BUFSIZ];
1.1 dm 1660:
1661: catname = isdir;
1662:
1663: /*
1664: * Parse options for this target
1665: */
1666: opts = strtol(cp, &cp, 8);
1667: if (*cp++ != ' ') {
1668: error("settarget: options not delimited");
1669: return;
1670: }
1671: options = opts;
1672:
1.14 millert 1673: if (DECODE(file, cp) == -1) {
1674: error("settarget: Cannot decode target name");
1675: return;
1676: }
1677:
1.1 dm 1678: /*
1679: * Handle target
1680: */
1.13 millert 1681: if (exptilde(target, cp, sizeof(target)) == NULL)
1.1 dm 1682: return;
1683: ptarget = target;
1684: while (*ptarget)
1685: ptarget++;
1686:
1687: ack();
1688: }
1689:
1690: /*
1691: * Cleanup in preparation for exiting.
1692: */
1.14 millert 1693: void
1694: cleanup(int dummy)
1.1 dm 1695: {
1696: /* We don't need to do anything */
1697: }
1698:
1699: /*
1700: * Server routine to read requests and process them.
1701: */
1.14 millert 1702: void
1703: server(void)
1.1 dm 1704: {
1705: static char cmdbuf[BUFSIZ];
1.10 mpech 1706: char *cp;
1707: int n;
1.1 dm 1708: extern jmp_buf finish_jmpbuf;
1709:
1.14 millert 1710: if (setjmp(finish_jmpbuf))
1.1 dm 1711: return;
1712: (void) signal(SIGHUP, sighandler);
1713: (void) signal(SIGINT, sighandler);
1714: (void) signal(SIGQUIT, sighandler);
1715: (void) signal(SIGTERM, sighandler);
1716: (void) signal(SIGPIPE, sighandler);
1717: (void) umask(oumask = umask(0));
1.14 millert 1718: (void) strlcpy(tempname, _RDIST_TMP, sizeof(tempname));
1.1 dm 1719: if (fromhost) {
1720: message(MT_SYSLOG, "Startup for %s", fromhost);
1721: #if defined(SETARGS)
1722: setproctitle("Serving %s", fromhost);
1723: #endif /* SETARGS */
1724: }
1725:
1726: /*
1727: * Let client know we want it to send it's version number
1728: */
1729: (void) sendcmd(S_VERSION, NULL);
1730:
1731: if (remline(cmdbuf, sizeof(cmdbuf), TRUE) < 0) {
1732: error("server: expected control record");
1733: return;
1734: }
1735:
1.14 millert 1736: if (cmdbuf[0] != S_VERSION || !isdigit((unsigned char)cmdbuf[1])) {
1.1 dm 1737: error("Expected version command, received: \"%s\".", cmdbuf);
1738: return;
1739: }
1740:
1741: proto_version = atoi(&cmdbuf[1]);
1742: if (proto_version != VERSION) {
1743: error("Protocol version %d is not supported.", proto_version);
1744: return;
1745: }
1746:
1747: /* Version number is okay */
1748: ack();
1749:
1750: /*
1751: * Main command loop
1752: */
1753: for ( ; ; ) {
1754: n = remline(cp = cmdbuf, sizeof(cmdbuf), TRUE);
1.14 millert 1755: if (n == -1) /* EOF */
1.1 dm 1756: return;
1757: if (n == 0) {
1758: error("server: expected control record");
1759: continue;
1760: }
1761:
1762: switch (*cp++) {
1763: case C_SETCONFIG: /* Configuration info */
1764: setconfig(cp);
1765: ack();
1766: continue;
1767:
1768: case C_DIRTARGET: /* init target file/directory name */
1769: settarget(cp, TRUE);
1770: continue;
1771:
1772: case C_TARGET: /* init target file/directory name */
1773: settarget(cp, FALSE);
1774: continue;
1775:
1776: case C_RECVREG: /* Transfer a regular file. */
1777: recvit(cp, S_IFREG);
1778: continue;
1779:
1780: case C_RECVDIR: /* Transfer a directory. */
1781: recvit(cp, S_IFDIR);
1782: continue;
1783:
1784: case C_RECVSYMLINK: /* Transfer symbolic link. */
1785: recvit(cp, S_IFLNK);
1786: continue;
1787:
1788: case C_RECVHARDLINK: /* Transfer hard link. */
1789: hardlink(cp);
1790: continue;
1791:
1792: case C_END: /* End of transfer */
1793: *ptarget = CNULL;
1794: if (catname <= 0) {
1795: error("server: too many '%c's", C_END);
1796: continue;
1797: }
1798: ptarget = sptarget[--catname];
1799: *ptarget = CNULL;
1800: ack();
1801: continue;
1802:
1803: case C_CLEAN: /* Clean. Cleanup a directory */
1804: clean(cp);
1805: continue;
1806:
1807: case C_QUERY: /* Query file/directory */
1808: query(cp);
1809: continue;
1810:
1811: case C_SPECIAL: /* Special. Execute commands */
1812: dospecial(cp);
1813: continue;
1814:
1815: case C_CMDSPECIAL: /* Cmd Special. Execute commands */
1816: docmdspecial();
1817: continue;
1818:
1.14 millert 1819: case C_CHMOG: /* Set owner, group, mode */
1820: dochmog(cp);
1.1 dm 1821: continue;
1822:
1823: case C_ERRMSG: /* Normal error message */
1824: if (cp && *cp)
1825: message(MT_NERROR|MT_NOREMOTE, "%s", cp);
1826: continue;
1827:
1828: case C_FERRMSG: /* Fatal error message */
1829: if (cp && *cp)
1830: message(MT_FERROR|MT_NOREMOTE, "%s", cp);
1831: return;
1832:
1833: default:
1834: error("server: unknown command '%s'", cp - 1);
1835: case CNULL:
1836: continue;
1837: }
1838: }
1839: }