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1.29 ! guenther 1: /* $OpenBSD: client.c,v 1.28 2014/07/05 06:45:00 guenther Exp $ */
1.3 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.
1.19 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: */
31:
1.28 guenther 32: #include <dirent.h>
33:
1.18 millert 34: #include "defs.h"
35: #include "y.tab.h"
1.1 dm 36:
37: /*
38: * Routines used in client mode to communicate with remove server.
39: */
40:
41:
42: /*
43: * Update status
44: */
45: #define US_NOTHING 0 /* No update needed */
46: #define US_NOENT 1 /* Entry does not exist */
47: #define US_OUTDATE 2 /* Entry is out of date */
48: #define US_DOCOMP 3 /* Do a binary comparison */
1.18 millert 49: #define US_CHMOG 4 /* Modes or ownership of file differ */
1.1 dm 50:
51: struct linkbuf *ihead = NULL; /* list of files with more than one link */
52: char buf[BUFSIZ]; /* general purpose buffer */
53: u_char respbuff[BUFSIZ]; /* Response buffer */
54: char target[BUFSIZ]; /* target/source directory name */
55: char source[BUFSIZ]; /* source directory name */
56: char *ptarget; /* pointer to end of target name */
57: char *Tdest; /* pointer to last T dest*/
58: struct namelist *updfilelist = NULL; /* List of updated files */
59:
1.18 millert 60: static void runspecial(char *, opt_t, char *, int);
61: static void addcmdspecialfile(char *, char *, int);
62: static void freecmdspecialfiles(void);
63: static struct linkbuf *linkinfo(struct stat *);
64: static int sendhardlink(opt_t, struct linkbuf *, char *, int);
65: static int sendfile(char *, opt_t, struct stat *, char *, char *, int);
66: static int rmchk(opt_t);
67: static int senddir(char *, opt_t, struct stat *, char *, char *, int);
68: static int sendlink(char *, opt_t, struct stat *, char *, char *, int);
69: static int update(char *, opt_t, struct stat *);
70: static int dostat(char *, struct stat *, opt_t);
71: static int statupdate(int, char *, opt_t, char *, int, struct stat *, char *, char *);
72: static int fullupdate(int, char *, opt_t, char *, int, struct stat *, char *, char *);
73: static int sendit(char *, opt_t, int);
1.1 dm 74:
75: /*
76: * return remote file pathname (relative from target)
77: */
1.18 millert 78: char *
79: remfilename(char *src, char *dest, char *path, char *rname, int destdir)
1.1 dm 80: {
81: extern struct namelist *filelist;
1.13 mpech 82: char *lname, *cp;
1.1 dm 83: static char buff[BUFSIZ];
84: int srclen, pathlen;
85: char *p;
86:
87:
88: debugmsg(DM_MISC,
89: "remfilename: src=%s dest=%s path=%s rname=%s destdir=%d\n",
90: A(src), A(dest), A(path), A(rname), destdir);
91:
92: if (!dest) {
93: debugmsg(DM_MISC, "remfilename: remote filename=%s\n", path);
94: return(path);
95: }
96:
97: if (!destdir) {
98: debugmsg(DM_MISC, "remfilename: remote filename=%s\n", dest);
99: return(dest);
100: }
101:
102: buff[0] = CNULL;
103: lname = buff;
104: if (path && *path) {
105: cp = strrchr(path, '/');
106: if (cp == NULL)
1.18 millert 107: (void) snprintf(buff, sizeof(buff), "%s/%s", dest, path);
1.1 dm 108: else {
109: srclen = strlen(src);
110: pathlen = strlen(path);
111: if (srclen >= pathlen)
112: cp++; /* xbasename(path) */
113: else {
114: if (filelist && filelist->n_next == NULL)
115: /* path relative to src */
116: cp = path + srclen;
117: else {
118: if ((p = strrchr(src, '/')))
119: cp = path + srclen - strlen(p);
120: else
121: cp = path;
122: }
123: }
124: if ((*cp != '/') && *cp)
1.18 millert 125: (void) snprintf(buff, sizeof(buff), "%s/%s",
126: dest, cp);
1.1 dm 127: else
1.18 millert 128: (void) snprintf(buff, sizeof(buff), "%s%s",
129: dest, cp);
1.1 dm 130: }
131: } else
1.18 millert 132: (void) strlcpy(lname, dest, buf + sizeof buff - lname);
1.1 dm 133:
134: debugmsg(DM_MISC, "remfilename: remote filename=%s\n", lname);
135:
136: return(lname);
137: }
138:
139: /*
140: * Return true if name is in the list.
141: */
1.18 millert 142: int
143: inlist(struct namelist *list, char *file)
1.1 dm 144: {
1.13 mpech 145: struct namelist *nl;
1.1 dm 146:
147: for (nl = list; nl != NULL; nl = nl->n_next)
148: if (strcmp(file, nl->n_name) == 0)
149: return(1);
150: return(0);
151: }
152:
153: /*
154: * Run any special commands for this file
155: */
1.18 millert 156: static void
157: runspecial(char *starget, opt_t opts, char *rname, int destdir)
1.1 dm 158: {
1.13 mpech 159: struct subcmd *sc;
1.1 dm 160: extern struct subcmd *subcmds;
161: char *rfile;
162:
163: rfile = remfilename(source, Tdest, target, rname, destdir);
164:
165: for (sc = subcmds; sc != NULL; sc = sc->sc_next) {
166: if (sc->sc_type != SPECIAL)
167: continue;
168: if (sc->sc_args != NULL && !inlist(sc->sc_args, starget))
169: continue;
170: message(MT_CHANGE, "special \"%s\"", sc->sc_name);
171: if (IS_ON(opts, DO_VERIFY))
172: continue;
173: (void) sendcmd(C_SPECIAL,
174: "%s=%s;%s=%s;%s=%s;export %s %s %s;%s",
175: E_LOCFILE, starget,
176: E_REMFILE, rfile,
177: E_BASEFILE, xbasename(rfile),
178: E_LOCFILE, E_REMFILE, E_BASEFILE,
179: sc->sc_name);
180: while (response() > 0)
181: ;
182: }
183: }
184:
185: /*
186: * If we're doing a target with a "cmdspecial" in it, then
187: * save the name of the file being updated for use with "cmdspecial".
188: */
1.18 millert 189: static void
190: addcmdspecialfile(char *starget, char *rname, int destdir)
1.1 dm 191: {
192: char *rfile;
193: struct namelist *new;
1.13 mpech 194: struct subcmd *sc;
1.1 dm 195: extern struct subcmd *subcmds;
196: int isokay = 0;
197:
198: rfile = remfilename(source, Tdest, target, rname, destdir);
199:
200: for (sc = subcmds; sc != NULL && !isokay; sc = sc->sc_next) {
201: if (sc->sc_type != CMDSPECIAL)
202: continue;
203: if (sc->sc_args != NULL && !inlist(sc->sc_args, starget))
204: continue;
205: isokay = TRUE;
206: }
207:
208: if (isokay) {
1.27 guenther 209: new = xmalloc(sizeof *new);
1.8 millert 210: new->n_name = xstrdup(rfile);
1.17 millert 211: new->n_regex = NULL;
1.1 dm 212: new->n_next = updfilelist;
213: updfilelist = new;
214: }
215: }
216:
217: /*
218: * Free the file list
219: */
1.18 millert 220: static void
221: freecmdspecialfiles(void)
1.1 dm 222: {
1.13 mpech 223: struct namelist *ptr, *save;
1.1 dm 224:
225: for (ptr = updfilelist; ptr; ) {
226: if (ptr->n_name) (void) free(ptr->n_name);
227: save = ptr->n_next;
228: (void) free(ptr);
229: if (save)
230: ptr = save->n_next;
231: else
232: ptr = NULL;
233: }
234: updfilelist = NULL;
235: }
236:
237: /*
238: * Run commands for an entire cmd
239: */
1.18 millert 240: void
241: runcmdspecial(struct cmd *cmd, opt_t opts)
1.1 dm 242: {
1.13 mpech 243: struct subcmd *sc;
244: struct namelist *f;
1.1 dm 245: int first = TRUE;
246:
247: for (sc = cmd->c_cmds; sc != NULL; sc = sc->sc_next) {
248: if (sc->sc_type != CMDSPECIAL)
249: continue;
250: message(MT_CHANGE, "cmdspecial \"%s\"", sc->sc_name);
251: if (IS_ON(opts, DO_VERIFY))
252: continue;
253: /* Send all the file names */
254: for (f = updfilelist; f != NULL; f = f->n_next) {
255: if (first) {
256: (void) sendcmd(C_CMDSPECIAL, NULL);
257: if (response() < 0)
258: return;
259: first = FALSE;
260: }
1.26 guenther 261: (void) sendcmd(RC_FILE, "%s", f->n_name);
1.1 dm 262: if (response() < 0)
263: return;
264: }
265: if (first) {
266: (void) sendcmd(C_CMDSPECIAL, NULL);
267: if (response() < 0)
268: return;
269: first = FALSE;
270: }
271: /* Send command to run and wait for it to complete */
1.26 guenther 272: (void) sendcmd(RC_COMMAND, "%s", sc->sc_name);
1.1 dm 273: while (response() > 0)
274: ;
275: first = TRUE; /* Reset in case there are more CMDSPECIAL's */
276: }
277: freecmdspecialfiles();
278: }
279:
280: /*
281: * For security, reject filenames that contains a newline
282: */
1.18 millert 283: int
284: checkfilename(char *name)
1.1 dm 285: {
1.13 mpech 286: char *cp;
1.1 dm 287:
288: if (strchr(name, '\n')) {
289: for (cp = name; *cp; cp++)
290: if (*cp == '\n')
291: *cp = '?';
292: message(MT_NERROR,
293: "Refuse to handle filename containing newline: %s",
294: name);
295: return(-1);
296: }
297:
298: return(0);
299: }
300:
1.18 millert 301: void
302: freelinkinfo(struct linkbuf *lp)
1.8 millert 303: {
304: if (lp->pathname)
305: free(lp->pathname);
306: if (lp->src)
307: free(lp->src);
308: if (lp->target)
309: free(lp->target);
310: free(lp);
311: }
312:
1.1 dm 313: /*
314: * Save and retrieve hard link info
315: */
1.18 millert 316: static struct linkbuf *
317: linkinfo(struct stat *statp)
1.1 dm 318: {
319: struct linkbuf *lp;
320:
1.8 millert 321: /* XXX - linear search doesn't scale with many links */
1.1 dm 322: for (lp = ihead; lp != NULL; lp = lp->nextp)
323: if (lp->inum == statp->st_ino && lp->devnum == statp->st_dev) {
324: lp->count--;
325: return(lp);
326: }
327:
1.27 guenther 328: lp = xmalloc(sizeof(*lp));
1.1 dm 329: lp->nextp = ihead;
330: ihead = lp;
331: lp->inum = statp->st_ino;
332: lp->devnum = statp->st_dev;
333: lp->count = statp->st_nlink - 1;
1.8 millert 334: lp->pathname = xstrdup(target);
335: lp->src = xstrdup(source);
1.1 dm 336: if (Tdest)
1.8 millert 337: lp->target = xstrdup(Tdest);
1.1 dm 338: else
1.8 millert 339: lp->target = NULL;
1.1 dm 340:
1.7 millert 341: return(NULL);
1.1 dm 342: }
343:
344: /*
345: * Send a hardlink
346: */
1.18 millert 347: static int
348: sendhardlink(opt_t opts, struct linkbuf *lp, char *rname, int destdir)
1.1 dm 349: {
350: static char buff[MAXPATHLEN];
1.18 millert 351: char *lname; /* name of file to link to */
352: char ername[MAXPATHLEN*4], elname[MAXPATHLEN*4];
1.1 dm 353:
354: debugmsg(DM_MISC,
355: "sendhardlink: rname='%s' pathname='%s' src='%s' target='%s'\n",
1.18 millert 356: rname, lp->pathname ? lp->pathname : "",
357: lp->src ? lp->src : "", lp->target ? lp->target : "");
1.1 dm 358:
1.10 millert 359: if (lp->target == NULL)
1.18 millert 360: lname = lp->pathname;
1.1 dm 361: else {
1.18 millert 362: lname = buff;
363: strlcpy(lname, remfilename(lp->src, lp->target,
364: lp->pathname, rname,
365: destdir), sizeof(buff));
366: debugmsg(DM_MISC, "sendhardlink: lname=%s\n", lname);
367: }
368: ENCODE(elname, lname);
369: ENCODE(ername, rname);
1.24 guenther 370: (void) sendcmd(C_RECVHARDLINK, "%lo %s %s",
1.18 millert 371: opts, elname, ername);
1.1 dm 372:
373: return(response());
374: }
375:
376: /*
377: * Send a file
378: */
1.18 millert 379: static int
380: sendfile(char *rname, opt_t opts, struct stat *stb, char *user,
381: char *group, int destdir)
1.1 dm 382: {
383: int goterr, f;
384: off_t i;
1.18 millert 385: char ername[MAXPATHLEN*4];
1.1 dm 386:
387: if (stb->st_nlink > 1) {
388: struct linkbuf *lp;
389:
390: if ((lp = linkinfo(stb)) != NULL)
391: return(sendhardlink(opts, lp, rname, destdir));
392: }
393:
394: if ((f = open(target, O_RDONLY)) < 0) {
395: error("%s: open for read failed: %s", target, SYSERR);
396: return(-1);
397: }
398:
399: /*
400: * Send file info
401: */
1.18 millert 402: ENCODE(ername, rname);
403:
1.24 guenther 404: (void) sendcmd(C_RECVREG, "%lo %04o %lld %lld %lld %s %s %s",
1.23 krw 405: opts, stb->st_mode & 07777, (long long) stb->st_size,
1.24 guenther 406: (long long)stb->st_mtime, (long long)stb->st_atime,
1.18 millert 407: user, group, ername);
1.1 dm 408: if (response() < 0) {
409: (void) close(f);
410: return(-1);
411: }
412:
1.18 millert 413:
1.23 krw 414: debugmsg(DM_MISC, "Send file '%s' %lld bytes\n", rname,
415: (long long) stb->st_size);
1.1 dm 416:
417: /*
418: * Set remote time out alarm handler.
419: */
420: (void) signal(SIGALRM, sighandler);
421:
422: /*
423: * Actually transfer the file
424: */
425: goterr = 0;
426: for (i = 0; i < stb->st_size; i += BUFSIZ) {
1.18 millert 427: off_t amt = BUFSIZ;
1.1 dm 428:
429: (void) alarm(rtimeout);
430: if (i + amt > stb->st_size)
431: amt = stb->st_size - i;
1.18 millert 432: if (read(f, buf, (size_t) amt) != (ssize_t) amt) {
1.1 dm 433: error("%s: File changed size", target);
434: err();
435: ++goterr;
436: /*
437: * XXX - We have to keep going because the
438: * server expects to receive a fixed number
439: * of bytes that we specified as the file size.
440: * We need Out Of Band communication to handle
441: * this situation gracefully.
442: */
443: }
1.18 millert 444: if (xwrite(rem_w, buf, (size_t) amt) < 0) {
445: error("%s: Error writing to client: %s",
1.1 dm 446: target, SYSERR);
447: err();
448: ++goterr;
449: break;
450: }
451: (void) alarm(0);
452: }
453:
454: (void) alarm(0); /* Insure alarm is off */
455: (void) close(f);
456:
457: debugmsg(DM_MISC, "Send file '%s' %s.\n",
458: (goterr) ? "failed" : "complete", rname);
459:
460: /*
461: * Check for errors and end send
462: */
463: if (goterr)
464: return(-1);
465: else {
466: ack();
467: f = response();
468: if (f < 0)
469: return(-1);
470: else if (f == 0 && IS_ON(opts, DO_COMPARE))
471: return(0);
472:
473: runspecial(target, opts, rname, destdir);
474: addcmdspecialfile(target, rname, destdir);
475:
476: return(0);
477: }
478: }
479:
480: /*
481: * Check for files on the machine being updated that are not on the master
482: * machine and remove them.
483: *
484: * Return < 0 on error.
485: * Return 0 if nothing happened.
486: * Return > 0 if anything is updated.
487: */
1.18 millert 488: static int
489: rmchk(opt_t opts)
1.1 dm 490: {
1.13 mpech 491: u_char *s;
1.1 dm 492: struct stat stb;
493: int didupdate = 0;
494: int n;
1.18 millert 495: char targ[MAXPATHLEN*4];
1.1 dm 496:
497: debugmsg(DM_CALL, "rmchk()\n");
498:
499: /*
500: * Tell the remote to clean the files from the last directory sent.
501: */
502: (void) sendcmd(C_CLEAN, "%o", IS_ON(opts, DO_VERIFY));
503: if (response() < 0)
504: return(-1);
505:
506: for ( ; ; ) {
507: n = remline(s = respbuff, sizeof(respbuff), TRUE);
508: if (n <= 0) {
509: error("rmchk: unexpected control record");
510: return(didupdate);
511: }
512:
513: switch (*s++) {
514: case CC_QUERY: /* Query if file should be removed */
515: /*
516: * Return the following codes to remove query.
517: * CC_NO -- file exists - DON'T remove.
518: * CC_YES -- file doesn't exist - REMOVE.
519: */
1.18 millert 520: if (DECODE(targ, (char *) s) == -1) {
521: error("rmchk: cannot decode file");
522: return(-1);
523: }
524: (void) snprintf(ptarget,
525: sizeof(target) - (ptarget - target),
526: "%s%s",
527: (ptarget[-1] == '/' ? "" : "/"),
528: targ);
1.1 dm 529: debugmsg(DM_MISC, "check %s\n", target);
530: if (except(target))
531: (void) sendcmd(CC_NO, NULL);
532: else if (lstat(target, &stb) < 0) {
533: if (sendcmd(CC_YES, NULL) == 0)
534: didupdate = 1;
535: } else
536: (void) sendcmd(CC_NO, NULL);
537: break;
538:
539: case CC_END:
540: *ptarget = CNULL;
541: ack();
542: return(didupdate);
543:
544: case C_LOGMSG:
545: if (n > 0)
546: message(MT_INFO, "%s", s);
547: break;
548:
1.4 millert 549: case C_NOTEMSG:
550: if (n > 0)
551: message(MT_NOTICE, "%s", s);
552: break;
553: /* Goto top of loop */
554:
1.1 dm 555: case C_ERRMSG:
556: message(MT_NERROR, "%s", s);
557: return(didupdate);
558:
559: case C_FERRMSG:
560: message(MT_FERROR, "%s", s);
561: finish();
562:
563: default:
564: error("rmchk: unexpected response '%s'", respbuff);
565: err();
566: }
567: }
568: /*NOTREACHED*/
569: }
570:
571: /*
572: * Send a directory
573: *
574: * Return < 0 on error.
575: * Return 0 if nothing happened.
576: * Return > 0 if anything is updated.
577: */
1.18 millert 578: static int
579: senddir(char *rname, opt_t opts, struct stat *stb, char *user,
580: char *group, int destdir)
1.1 dm 581: {
1.28 guenther 582: struct dirent *dp;
1.1 dm 583: DIR *d;
584: char *optarget, *cp;
585: int len;
586: int didupdate = 0;
1.18 millert 587: char ername[MAXPATHLEN*4];
588:
589: /*
590: * Send recvdir command in recvit() format.
591: */
592: ENCODE(ername, rname);
1.24 guenther 593: (void) sendcmd(C_RECVDIR, "%lo %04o 0 0 0 %s %s %s",
1.18 millert 594: opts, stb->st_mode & 07777, user, group, ername);
595: if (response() < 0)
596: return(-1);
1.1 dm 597:
1.25 guenther 598: optarget = ptarget;
599:
1.1 dm 600: /*
1.2 dm 601: * Don't descend into directory
602: */
1.25 guenther 603: if (IS_ON(opts, DO_NODESCEND)) {
604: didupdate = 0;
1.24 guenther 605: goto out;
1.25 guenther 606: }
1.2 dm 607:
1.18 millert 608: if (IS_ON(opts, DO_REMOVE))
609: if (rmchk(opts) > 0)
610: ++didupdate;
611:
1.2 dm 612: if ((d = opendir(target)) == NULL) {
613: error("%s: opendir failed: %s", target, SYSERR);
1.25 guenther 614: didupdate = -1;
615: goto out;
1.2 dm 616: }
617:
1.1 dm 618: len = ptarget - target;
1.18 millert 619: while ((dp = readdir(d)) != NULL) {
1.1 dm 620: if (!strcmp(dp->d_name, ".") ||
621: !strcmp(dp->d_name, ".."))
622: continue;
623: if (len + 1 + (int) strlen(dp->d_name) >= MAXPATHLEN - 1) {
624: error("%s/%s: Name too long", target,
625: dp->d_name);
626: continue;
627: }
628: ptarget = optarget;
629: if (ptarget[-1] != '/')
630: *ptarget++ = '/';
631: cp = dp->d_name;
1.18 millert 632: while ((*ptarget++ = *cp++) != '\0')
633: continue;
1.1 dm 634: ptarget--;
635: if (sendit(dp->d_name, opts, destdir) > 0)
636: didupdate = 1;
637: }
638: (void) closedir(d);
639:
1.25 guenther 640: out:
1.1 dm 641: (void) sendcmd(C_END, NULL);
642: (void) response();
643:
644: ptarget = optarget;
645: *ptarget = CNULL;
646:
647: return(didupdate);
648: }
649:
650: /*
651: * Send a link
652: */
1.18 millert 653: static int
654: sendlink(char *rname, opt_t opts, struct stat *stb, char *user,
655: char *group, int destdir)
1.1 dm 656: {
1.7 millert 657: int f, n;
1.1 dm 658: static char tbuf[BUFSIZ];
659: char lbuf[MAXPATHLEN];
660: u_char *s;
1.18 millert 661: char ername[MAXPATHLEN*4];
1.1 dm 662:
1.24 guenther 663: debugmsg(DM_CALL, "sendlink(%s, %lx, stb, %d)\n", rname, opts, destdir);
1.1 dm 664:
665: if (stb->st_nlink > 1) {
666: struct linkbuf *lp;
667:
668: if ((lp = linkinfo(stb)) != NULL)
669: return(sendhardlink(opts, lp, rname, destdir));
670: }
671:
672: /*
673: * Gather and send basic link info
674: */
1.18 millert 675: ENCODE(ername, rname);
1.24 guenther 676: (void) sendcmd(C_RECVSYMLINK, "%lo %04o %lld %lld %lld %s %s %s",
1.23 krw 677: opts, stb->st_mode & 07777, (long long) stb->st_size,
1.24 guenther 678: (long long)stb->st_mtime, (long long)stb->st_atime,
1.18 millert 679: user, group, ername);
1.1 dm 680: if (response() < 0)
681: return(-1);
682:
683: /*
684: * Gather and send additional link info
685: */
1.7 millert 686: if ((n = readlink(target, lbuf, sizeof(lbuf)-1)) != -1)
687: lbuf[n] = '\0';
688: else {
689: error("%s: readlink failed", target);
690: err();
691: }
1.18 millert 692: (void) snprintf(tbuf, sizeof(tbuf), "%.*s", (int) stb->st_size, lbuf);
693: ENCODE(ername, tbuf);
694: (void) sendcmd(C_NONE, "%s\n", ername);
1.1 dm 695:
1.7 millert 696: if (n != stb->st_size) {
1.1 dm 697: error("%s: file changed size", target);
698: err();
699: } else
700: ack();
701:
702: /*
703: * Check response
704: */
705: f = response();
706: if (f < 0)
707: return(-1);
708: else if (f == 0 && IS_ON(opts, DO_COMPARE))
709: return(0);
710:
711: /*
712: * Read and process responses from server.
713: * The server may send multiple messages regarding
714: * file deletes if the remote target is a directory.
715: */
716: for (;;) {
717: n = remline(s = respbuff, sizeof(respbuff), TRUE);
718: if (n == -1) /* normal EOF */
719: return(0);
720: if (n == 0) {
721: error("expected control record");
722: continue;
723: }
724:
725: switch (*s++) {
726: case C_END: /* End of send operation */
727: *ptarget = CNULL;
728: ack();
729: runspecial(target, opts, rname, destdir);
730: addcmdspecialfile(target, rname, destdir);
731: return(0);
732:
733: case C_LOGMSG:
734: if (n > 0)
735: message(MT_INFO, "%s", s);
736: break;
1.4 millert 737:
738: case C_NOTEMSG:
739: if (n > 0)
740: message(MT_NOTICE, "%s", s);
741: break;
742: /* Goto top of loop */
1.1 dm 743:
744: case C_ERRMSG:
745: message(MT_NERROR, "%s", s);
746: return(-1);
747:
748: case C_FERRMSG:
749: message(MT_FERROR, "%s", s);
750: finish();
751:
752: default:
753: error("install link: unexpected response '%s'",
754: respbuff);
755: err();
756: }
757: }
758: /*NOTREACHED*/
759: }
760:
761: /*
762: * Check to see if file needs to be updated on the remote machine.
763: * Returns:
764: * US_NOTHING - no update
765: * US_NOENT - remote doesn't exist
766: * US_OUTDATE - out of date
767: * US_DOCOMP - comparing binaries to determine if out of date
1.18 millert 768: * US_CHMOG - File modes or ownership do not match
1.1 dm 769: */
1.18 millert 770: static int
771: update(char *rname, opt_t opts, struct stat *statp)
1.1 dm 772: {
1.13 mpech 773: off_t size;
774: time_t mtime;
1.1 dm 775: unsigned short lmode;
776: unsigned short rmode;
777: char *owner = NULL, *group = NULL;
778: int done, n;
779: u_char *cp;
1.18 millert 780: char ername[MAXPATHLEN*4];
1.1 dm 781:
1.24 guenther 782: debugmsg(DM_CALL, "update(%s, 0x%lx, %p)\n", rname, opts, statp);
1.1 dm 783:
1.21 deraadt 784: switch (statp->st_mode & S_IFMT) {
785: case S_IFBLK:
786: debugmsg(DM_MISC, "%s is a block special; skipping\n", target);
787: return(US_NOTHING);
788: case S_IFCHR:
789: debugmsg(DM_MISC, "%s is a character special; skipping\n",
790: target);
791: return(US_NOTHING);
792: case S_IFIFO:
793: debugmsg(DM_MISC, "%s is a fifo; skipping\n", target);
794: return(US_NOTHING);
795: case S_IFSOCK:
796: debugmsg(DM_MISC, "%s is a socket; skipping\n", target);
797: return(US_NOTHING);
798: }
799:
1.1 dm 800: if (IS_ON(opts, DO_NOEXEC))
801: if (isexec(target, statp)) {
802: debugmsg(DM_MISC, "%s is an executable\n", target);
803: return(US_NOTHING);
804: }
805:
806: /*
807: * Check to see if the file exists on the remote machine.
808: */
1.18 millert 809: ENCODE(ername, rname);
810: (void) sendcmd(C_QUERY, "%s", ername);
1.1 dm 811:
812: for (done = 0; !done;) {
813: n = remline(cp = respbuff, sizeof(respbuff), TRUE);
814: if (n <= 0) {
815: error("update: unexpected control record in response to query");
816: return(US_NOTHING);
817: }
818:
819: switch (*cp++) {
820: case QC_ONNFS: /* Resides on a NFS */
821: debugmsg(DM_MISC,
822: "update: %s is on a NFS. Skipping...\n",
823: rname);
824: return(US_NOTHING);
825:
826: case QC_SYM: /* Is a symbolic link */
827: debugmsg(DM_MISC,
828: "update: %s is a symlink. Skipping...\n",
829: rname);
830: return(US_NOTHING);
831:
832: case QC_ONRO: /* Resides on a Read-Only fs */
833: debugmsg(DM_MISC,
834: "update: %s is on a RO fs. Skipping...\n",
835: rname);
836: return(US_NOTHING);
837:
838: case QC_YES:
839: done = 1;
840: break;
841:
842: case QC_NO: /* file doesn't exist so install it */
843: return(US_NOENT);
844:
845: case C_ERRMSG:
846: if (cp)
847: message(MT_NERROR, "%s", cp);
848: return(US_NOTHING);
849:
850: case C_FERRMSG:
851: if (cp)
852: message(MT_FERROR, "%s", cp);
853: finish();
854:
855: case C_NOTEMSG:
856: if (cp)
857: message(MT_NOTICE, "%s", cp);
858: break;
859: /* Goto top of loop */
860:
861: default:
1.18 millert 862: error("update: unexpected response to query '%s'", respbuff);
1.1 dm 863: return(US_NOTHING);
864: }
865: }
866:
867: /*
868: * Target exists, but no other info passed
869: */
870: if (n <= 1 || !S_ISREG(statp->st_mode))
871: return(US_OUTDATE);
872:
873: if (IS_ON(opts, DO_COMPARE))
874: return(US_DOCOMP);
875:
876: /*
877: * Parse size
878: */
1.23 krw 879: size = (off_t) strtoll(cp, (char **)&cp, 10);
1.1 dm 880: if (*cp++ != ' ') {
881: error("update: size not delimited");
882: return(US_NOTHING);
883: }
884:
885: /*
886: * Parse mtime
887: */
1.7 millert 888: mtime = strtol(cp, (char **)&cp, 10);
1.1 dm 889: if (*cp++ != ' ') {
890: error("update: mtime not delimited");
891: return(US_NOTHING);
892: }
893:
894: /*
895: * Parse remote file mode
896: */
1.7 millert 897: rmode = strtol(cp, (char **)&cp, 8);
1.1 dm 898: if (cp && *cp)
899: ++cp;
900:
901: /*
902: * Be backwards compatible
903: */
904: if (cp && *cp != CNULL) {
905: /*
906: * Parse remote file owner
907: */
908: owner = strtok((char *)cp, " ");
909: if (owner == NULL) {
910: error("update: owner not delimited");
911: return(US_NOTHING);
912: }
913:
914: /*
915: * Parse remote file group
916: */
1.7 millert 917: group = strtok(NULL, " ");
1.1 dm 918: if (group == NULL) {
919: error("update: group not delimited");
920: return(US_NOTHING);
921: }
922: }
923:
924: /*
925: * File needs to be updated?
926: */
927: lmode = statp->st_mode & 07777;
928:
929: debugmsg(DM_MISC, "update(%s,) local mode %04o remote mode %04o\n",
930: rname, lmode, rmode);
1.24 guenther 931: debugmsg(DM_MISC, "update(%s,) size %lld mtime %lld owner '%s' grp '%s'"
932: "\n", rname, (long long) size, (long long)mtime, owner, group);
1.1 dm 933:
934: if (statp->st_mtime != mtime) {
935: if (statp->st_mtime < mtime && IS_ON(opts, DO_YOUNGER)) {
936: message(MT_WARNING,
937: "%s: Warning: remote copy is newer",
938: target);
939: return(US_NOTHING);
940: }
941: return(US_OUTDATE);
942: }
943:
1.18 millert 944: if (statp->st_size != size) {
1.23 krw 945: debugmsg(DM_MISC, "size does not match (%lld != %lld).\n",
946: (long long) statp->st_size, (long long) size);
1.18 millert 947: return(US_OUTDATE);
948: }
949:
1.1 dm 950: if (!IS_ON(opts, DO_NOCHKMODE) && lmode != rmode) {
951: debugmsg(DM_MISC, "modes do not match (%04o != %04o).\n",
952: lmode, rmode);
1.18 millert 953: return(US_CHMOG);
1.1 dm 954: }
955:
956:
957: /*
958: * Check ownership
959: */
960: if (!IS_ON(opts, DO_NOCHKOWNER) && owner) {
961: if (!IS_ON(opts, DO_NUMCHKOWNER)) {
962: /* Check by string compare */
963: if (strcmp(owner, getusername(statp->st_uid,
964: target, opts)) != 0) {
965: debugmsg(DM_MISC,
966: "owner does not match (%s != %s).\n",
967: getusername(statp->st_uid,
968: target, opts), owner);
1.18 millert 969: return(US_CHMOG);
1.1 dm 970: }
971: } else {
972: /*
973: * Check numerically.
974: * Allow negative numbers.
975: */
1.18 millert 976: while (*owner && !isdigit((unsigned char)*owner) &&
977: (*owner != '-'))
1.1 dm 978: ++owner;
1.29 ! guenther 979: if (owner && (uid_t)atoi(owner) != statp->st_uid) {
1.1 dm 980: debugmsg(DM_MISC,
981: "owner does not match (%d != %s).\n",
982: statp->st_uid, owner);
1.18 millert 983: return(US_CHMOG);
1.1 dm 984: }
985: }
986: }
987:
988: if (!IS_ON(opts, DO_NOCHKGROUP) && group) {
989: if (!IS_ON(opts, DO_NUMCHKGROUP)) {
990: /* Check by string compare */
991: if (strcmp(group, getgroupname(statp->st_gid,
992: target, opts)) != 0) {
993: debugmsg(DM_MISC,
994: "group does not match (%s != %s).\n",
995: getgroupname(statp->st_gid,
996: target, opts), group);
1.18 millert 997: return(US_CHMOG);
1.1 dm 998: }
999: } else {
1000: /* Check numerically */
1001: /* Allow negative gid */
1.18 millert 1002: while (*group && !isdigit((unsigned char) *group) &&
1003: (*group != '-'))
1.1 dm 1004: ++group;
1.29 ! guenther 1005: if (group && (gid_t)atoi(group) != statp->st_gid) {
1.1 dm 1006: debugmsg(DM_MISC,
1007: "group does not match (%d != %s).\n",
1008: statp->st_gid, group);
1.18 millert 1009: return(US_CHMOG);
1.1 dm 1010: }
1011: }
1012: }
1013:
1014: return(US_NOTHING);
1015: }
1016:
1017: /*
1018: * Stat a file
1019: */
1.18 millert 1020: static int
1021: dostat(char *file, struct stat *statbuf, opt_t opts)
1.1 dm 1022: {
1023: int s;
1024:
1025: if (IS_ON(opts, DO_FOLLOW))
1026: s = stat(file, statbuf);
1027: else
1028: s = lstat(file, statbuf);
1029:
1030: if (s < 0)
1031: error("%s: %s failed: %s", file,
1032: IS_ON(opts, DO_FOLLOW) ? "stat" : "lstat", SYSERR);
1033: return(s);
1034: }
1035:
1036: /*
1.18 millert 1037: * We need to just change file info.
1038: */
1039: static int
1040: statupdate(int u, char *target, opt_t opts, char *rname, int destdir,
1041: struct stat *st, char *user, char *group)
1042: {
1043: int rv = 0;
1044: char ername[MAXPATHLEN*4];
1045: int lmode = st->st_mode & 07777;
1046:
1047: if (u == US_CHMOG) {
1048: if (IS_ON(opts, DO_VERIFY)) {
1049: message(MT_INFO,
1050: "%s: need to change to perm %04o, owner %s, group %s",
1051: target, lmode, user, group);
1052: runspecial(target, opts, rname, destdir);
1053: }
1054: else {
1055: message(MT_CHANGE, "%s: change to perm %04o, owner %s, group %s",
1056: target, lmode, user, group);
1057: ENCODE(ername, rname);
1.24 guenther 1058: (void) sendcmd(C_CHMOG, "%lo %04o %s %s %s",
1.18 millert 1059: opts, lmode, user, group, ername);
1060: (void) response();
1061: }
1062: rv = 1;
1063: }
1064: return(rv);
1065: }
1066:
1067:
1068: /*
1069: * We need to install/update:
1070: */
1071: static int
1072: fullupdate(int u, char *target, opt_t opts, char *rname, int destdir,
1073: struct stat *st, char *user, char *group)
1074: {
1075: /*
1076: * No entry - need to install
1077: */
1078: if (u == US_NOENT) {
1079: if (IS_ON(opts, DO_VERIFY)) {
1080: message(MT_INFO, "%s: need to install", target);
1081: runspecial(target, opts, rname, destdir);
1082: return(1);
1083: }
1084: if (!IS_ON(opts, DO_QUIET))
1085: message(MT_CHANGE, "%s: installing", target);
1086: FLAG_OFF(opts, (DO_COMPARE|DO_REMOVE));
1087: }
1088:
1089: /*
1090: * Handle special file types, including directories and symlinks
1091: */
1092: if (S_ISDIR(st->st_mode)) {
1093: if (senddir(rname, opts, st, user, group, destdir) > 0)
1094: return(1);
1095: return(0);
1096: } else if (S_ISLNK(st->st_mode)) {
1097: if (u == US_NOENT)
1098: FLAG_ON(opts, DO_COMPARE);
1099: /*
1100: * Since we always send link info to the server
1101: * so the server can determine if the remote link
1.21 deraadt 1102: * is correct, we never get any acknowledgement
1.18 millert 1103: * from the server whether the link was really
1104: * updated or not.
1105: */
1106: (void) sendlink(rname, opts, st, user, group, destdir);
1107: return(0);
1108: } else if (S_ISREG(st->st_mode)) {
1109: if (u == US_OUTDATE) {
1110: if (IS_ON(opts, DO_VERIFY)) {
1111: message(MT_INFO, "%s: need to update", target);
1112: runspecial(target, opts, rname, destdir);
1113: return(1);
1114: }
1115: if (!IS_ON(opts, DO_QUIET))
1116: message(MT_CHANGE, "%s: updating", target);
1117: }
1118: return (sendfile(rname, opts, st, user, group, destdir) == 0);
1119: } else {
1120: message(MT_INFO, "%s: unknown file type 0%o", target,
1121: st->st_mode);
1122: return(0);
1123: }
1124: }
1125:
1126: /*
1.1 dm 1127: * Transfer the file or directory in target[].
1128: * rname is the name of the file on the remote host.
1129: *
1130: * Return < 0 on error.
1131: * Return 0 if nothing happened.
1132: * Return > 0 if anything is updated.
1133: */
1.18 millert 1134: static int
1135: sendit(char *rname, opt_t opts, int destdir)
1.1 dm 1136: {
1137: static struct stat stb;
1138: char *user, *group;
1139: int u, len;
1140:
1141: /*
1142: * Remove possible accidental newline
1143: */
1144: len = strlen(rname);
1145: if (len > 0 && rname[len-1] == '\n')
1146: rname[len-1] = CNULL;
1147:
1148: if (checkfilename(rname) != 0)
1149: return(-1);
1150:
1.24 guenther 1151: debugmsg(DM_CALL, "sendit(%s, 0x%lx) called\n", rname, opts);
1.1 dm 1152:
1153: if (except(target))
1154: return(0);
1155:
1156: if (dostat(target, &stb, opts) < 0)
1157: return(-1);
1158:
1159: /*
1160: * Does rname need updating?
1161: */
1162: u = update(rname, opts, &stb);
1.24 guenther 1163: debugmsg(DM_MISC, "sendit(%s, 0x%lx): update status of %s is %d\n",
1.1 dm 1164: rname, opts, target, u);
1165:
1166: /*
1167: * Don't need to update the file, but we may need to save hardlink
1168: * info.
1169: */
1170: if (u == US_NOTHING) {
1171: if (S_ISREG(stb.st_mode) && stb.st_nlink > 1)
1172: (void) linkinfo(&stb);
1173: return(0);
1174: }
1175:
1176: user = getusername(stb.st_uid, target, opts);
1177: group = getgroupname(stb.st_gid, target, opts);
1178:
1.18 millert 1179: if (u == US_CHMOG && IS_OFF(opts, DO_UPDATEPERM))
1180: u = US_OUTDATE;
1.1 dm 1181:
1.18 millert 1182: if (u == US_NOENT || u == US_OUTDATE || u == US_DOCOMP)
1183: return(fullupdate(u, target, opts, rname, destdir, &stb,
1184: user, group));
1185:
1186: if (u == US_CHMOG)
1187: return(statupdate(u, target, opts, rname, destdir, &stb,
1188: user, group));
1.1 dm 1189:
1.18 millert 1190: return(0);
1.1 dm 1191: }
1192:
1193: /*
1194: * Remove temporary files and do any cleanup operations before exiting.
1195: */
1.18 millert 1196: void
1197: cleanup(int dummy)
1.1 dm 1198: {
1199: char *file;
1200: #ifdef USE_STATDB
1201: extern char statfile[];
1202:
1203: (void) unlink(statfile);
1204: #endif
1205:
1.18 millert 1206: if ((file = getnotifyfile()) != NULL)
1.1 dm 1207: (void) unlink(file);
1208: }
1209:
1210: /*
1211: * Update the file(s) if they are different.
1212: * destdir = 1 if destination should be a directory
1213: * (i.e., more than one source is being copied to the same destination).
1214: *
1215: * Return < 0 on error.
1216: * Return 0 if nothing updated.
1217: * Return > 0 if something was updated.
1218: */
1.18 millert 1219: int
1220: install(char *src, char *dest, int ddir, int destdir, opt_t opts)
1.1 dm 1221: {
1222: static char destcopy[MAXPATHLEN];
1223: char *rname;
1224: int didupdate = 0;
1.18 millert 1225: char ername[MAXPATHLEN*4];
1.1 dm 1226:
1227: debugmsg(DM_CALL,
1.24 guenther 1228: "install(src=%s,dest=%s,ddir=%d,destdir=%d,opts=%ld) start\n",
1.1 dm 1229: (src?src:"NULL"), (dest?dest:"NULL"), ddir, destdir, opts);
1230: /*
1231: * Save source name
1232: */
1233: if (IS_ON(opts, DO_WHOLE))
1234: source[0] = CNULL;
1235: else
1.18 millert 1236: (void) strlcpy(source, src, sizeof(source));
1.1 dm 1237:
1238: if (dest == NULL) {
1239: FLAG_OFF(opts, DO_WHOLE); /* WHOLE only useful if renaming */
1240: dest = src;
1241: }
1242:
1243: if (checkfilename(dest) != 0)
1244: return(-1);
1245:
1246: if (nflag || debug) {
1247: static char buff[BUFSIZ];
1248: char *cp;
1249:
1250: cp = getondistoptlist(opts);
1.18 millert 1251: (void) snprintf(buff, sizeof(buff), "%s%s%s %s %s",
1.1 dm 1252: IS_ON(opts, DO_VERIFY) ? "verify" : "install",
1253: (cp) ? " -o" : "", (cp) ? cp : "",
1254: src, dest);
1255: if (nflag) {
1256: printf("%s\n", buff);
1257: return(0);
1258: } else
1259: debugmsg(DM_MISC, "%s\n", buff);
1260: }
1261:
1.16 millert 1262: rname = exptilde(target, src, sizeof(target));
1.1 dm 1263: if (rname == NULL)
1264: return(-1);
1265: ptarget = target;
1266: while (*ptarget)
1267: ptarget++;
1268: /*
1269: * If we are renaming a directory and we want to preserve
1.20 jsg 1270: * the directory hierarchy (-w), we must strip off the leading
1.1 dm 1271: * directory name and preserve the rest.
1272: */
1273: if (IS_ON(opts, DO_WHOLE)) {
1274: while (*rname == '/')
1275: rname++;
1276: ddir = 1;
1277: destdir = 1;
1278: } else {
1279: rname = strrchr(target, '/');
1280: /* Check if no '/' or target ends in '/' */
1281: if (rname == NULL ||
1282: rname+1 == NULL ||
1283: *(rname+1) == CNULL)
1284: rname = target;
1285: else
1286: rname++;
1287: }
1288:
1289: debugmsg(DM_MISC,
1290: "install: target=%s src=%s rname=%s dest='%s' destdir=%d, ddir=%d\n",
1291: target, source, rname, dest, destdir, ddir);
1292:
1293: /*
1294: * Pass the destination file/directory name to remote.
1295: */
1.18 millert 1296: ENCODE(ername, dest);
1.1 dm 1297: if (ddir)
1.24 guenther 1298: (void) sendcmd(C_DIRTARGET, "%lo %s", opts, ername);
1.1 dm 1299: else
1.24 guenther 1300: (void) sendcmd(C_TARGET, "%lo %s", opts, ername);
1.1 dm 1301: if (response() < 0)
1302: return(-1);
1303:
1304: /*
1305: * Save the name of the remote target destination if we are
1306: * in WHOLE mode (destdir > 0) or if the source and destination
1307: * are not the same. This info will be used later for maintaining
1308: * hardlink info.
1309: */
1310: if (destdir || (src && dest && strcmp(src, dest))) {
1.18 millert 1311: (void) strlcpy(destcopy, dest, sizeof(destcopy));
1.1 dm 1312: Tdest = destcopy;
1313: }
1314:
1315: didupdate = sendit(rname, opts, destdir);
1316: Tdest = 0;
1317:
1318: return(didupdate);
1319: }