1515 lines
31 KiB
C
1515 lines
31 KiB
C
/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)server.c 5.15 (Berkeley) 3/1/91";
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#endif /* not lint */
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#include "defs.h"
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#define ack() (void) write(rem, "\0\n", 2)
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#define err() (void) write(rem, "\1\n", 2)
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struct linkbuf *ihead; /* list of files with more than one link */
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char buf[BUFSIZ]; /* general purpose buffer */
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char target[BUFSIZ]; /* target/source directory name */
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char *tp; /* pointer to end of target name */
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char *Tdest; /* pointer to last T dest*/
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int catname; /* cat name to target name */
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char *stp[32]; /* stack of saved tp's for directories */
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int oumask; /* old umask for creating files */
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extern FILE *lfp; /* log file for mailing changes */
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void cleanup();
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struct linkbuf *savelink();
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/*
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* Server routine to read requests and process them.
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* Commands are:
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* Tname - Transmit file if out of date
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* Vname - Verify if file out of date or not
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* Qname - Query if file exists. Return mtime & size if it does.
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*/
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server()
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{
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char cmdbuf[BUFSIZ];
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register char *cp;
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signal(SIGHUP, cleanup);
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signal(SIGINT, cleanup);
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signal(SIGQUIT, cleanup);
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signal(SIGTERM, cleanup);
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signal(SIGPIPE, cleanup);
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rem = 0;
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oumask = umask(0);
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(void) sprintf(buf, "V%d\n", VERSION);
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(void) write(rem, buf, strlen(buf));
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for (;;) {
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cp = cmdbuf;
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if (read(rem, cp, 1) <= 0)
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return;
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if (*cp++ == '\n') {
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error("server: expected control record\n");
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continue;
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}
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do {
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if (read(rem, cp, 1) != 1)
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cleanup();
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} while (*cp++ != '\n' && cp < &cmdbuf[BUFSIZ]);
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*--cp = '\0';
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cp = cmdbuf;
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switch (*cp++) {
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case 'T': /* init target file/directory name */
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catname = 1; /* target should be directory */
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goto dotarget;
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case 't': /* init target file/directory name */
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catname = 0;
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dotarget:
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if (exptilde(target, cp) == NULL)
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continue;
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tp = target;
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while (*tp)
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tp++;
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ack();
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continue;
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case 'R': /* Transfer a regular file. */
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recvf(cp, S_IFREG);
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continue;
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case 'D': /* Transfer a directory. */
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recvf(cp, S_IFDIR);
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continue;
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case 'K': /* Transfer symbolic link. */
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recvf(cp, S_IFLNK);
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continue;
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case 'k': /* Transfer hard link. */
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hardlink(cp);
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continue;
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case 'E': /* End. (of directory) */
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*tp = '\0';
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if (catname <= 0) {
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error("server: too many 'E's\n");
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continue;
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}
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tp = stp[--catname];
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*tp = '\0';
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ack();
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continue;
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case 'C': /* Clean. Cleanup a directory */
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clean(cp);
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continue;
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case 'Q': /* Query. Does the file/directory exist? */
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query(cp);
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continue;
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case 'S': /* Special. Execute commands */
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dospecial(cp);
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continue;
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#ifdef notdef
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/*
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* These entries are reserved but not currently used.
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* The intent is to allow remote hosts to have master copies.
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* Currently, only the host rdist runs on can have masters.
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*/
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case 'X': /* start a new list of files to exclude */
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except = bp = NULL;
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case 'x': /* add name to list of files to exclude */
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if (*cp == '\0') {
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ack();
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continue;
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}
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if (*cp == '~') {
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if (exptilde(buf, cp) == NULL)
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continue;
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cp = buf;
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}
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if (bp == NULL)
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except = bp = expand(makeblock(NAME, cp), E_VARS);
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else
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bp->b_next = expand(makeblock(NAME, cp), E_VARS);
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while (bp->b_next != NULL)
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bp = bp->b_next;
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ack();
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continue;
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case 'I': /* Install. Transfer file if out of date. */
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opts = 0;
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while (*cp >= '0' && *cp <= '7')
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opts = (opts << 3) | (*cp++ - '0');
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if (*cp++ != ' ') {
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error("server: options not delimited\n");
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return;
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}
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install(cp, opts);
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continue;
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case 'L': /* Log. save message in log file */
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log(lfp, cp);
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continue;
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#endif
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case '\1':
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nerrs++;
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continue;
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case '\2':
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return;
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default:
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error("server: unknown command '%s'\n", cp);
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case '\0':
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continue;
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}
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}
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}
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/*
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* Update the file(s) if they are different.
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* destdir = 1 if destination should be a directory
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* (i.e., more than one source is being copied to the same destination).
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*/
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install(src, dest, destdir, opts)
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char *src, *dest;
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int destdir, opts;
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{
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char *rname;
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char destcopy[BUFSIZ];
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if (dest == NULL) {
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opts &= ~WHOLE; /* WHOLE mode only useful if renaming */
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dest = src;
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}
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if (nflag || debug) {
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printf("%s%s%s%s%s %s %s\n", opts & VERIFY ? "verify":"install",
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opts & WHOLE ? " -w" : "",
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opts & YOUNGER ? " -y" : "",
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opts & COMPARE ? " -b" : "",
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opts & REMOVE ? " -R" : "", src, dest);
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if (nflag)
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return;
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}
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rname = exptilde(target, src);
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if (rname == NULL)
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return;
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tp = target;
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while (*tp)
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tp++;
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/*
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* If we are renaming a directory and we want to preserve
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* the directory heirarchy (-w), we must strip off the leading
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* directory name and preserve the rest.
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*/
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if (opts & WHOLE) {
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while (*rname == '/')
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rname++;
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destdir = 1;
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} else {
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rname = rindex(target, '/');
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if (rname == NULL)
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rname = target;
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else
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rname++;
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}
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if (debug)
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printf("target = %s, rname = %s\n", target, rname);
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/*
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* Pass the destination file/directory name to remote.
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*/
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(void) sprintf(buf, "%c%s\n", destdir ? 'T' : 't', dest);
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if (debug)
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printf("buf = %s", buf);
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(void) write(rem, buf, strlen(buf));
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if (response() < 0)
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return;
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if (destdir) {
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strcpy(destcopy, dest);
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Tdest = destcopy;
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}
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sendf(rname, opts);
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Tdest = 0;
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}
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#define protoname() (pw ? pw->pw_name : user)
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#define protogroup() (gr ? gr->gr_name : group)
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/*
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* Transfer the file or directory in target[].
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* rname is the name of the file on the remote host.
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*/
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sendf(rname, opts)
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char *rname;
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int opts;
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{
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register struct subcmd *sc;
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struct stat stb;
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int sizerr, f, u, len;
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off_t i;
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DIR *d;
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struct direct *dp;
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char *otp, *cp;
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extern struct subcmd *subcmds;
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static char user[15], group[15];
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if (debug)
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printf("sendf(%s, %x)\n", rname, opts);
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if (except(target))
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return;
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if ((opts & FOLLOW ? stat(target, &stb) : lstat(target, &stb)) < 0) {
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error("%s: %s\n", target, strerror(errno));
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return;
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}
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if ((u = update(rname, opts, &stb)) == 0) {
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if ((stb.st_mode & S_IFMT) == S_IFREG && stb.st_nlink > 1)
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(void) savelink(&stb);
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return;
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}
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if (pw == NULL || pw->pw_uid != stb.st_uid)
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if ((pw = getpwuid(stb.st_uid)) == NULL) {
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log(lfp, "%s: no password entry for uid %d \n",
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target, stb.st_uid);
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pw = NULL;
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sprintf(user, ":%d", stb.st_uid);
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}
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if (gr == NULL || gr->gr_gid != stb.st_gid)
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if ((gr = getgrgid(stb.st_gid)) == NULL) {
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log(lfp, "%s: no name for group %d\n",
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target, stb.st_gid);
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gr = NULL;
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sprintf(group, ":%d", stb.st_gid);
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}
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if (u == 1) {
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if (opts & VERIFY) {
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log(lfp, "need to install: %s\n", target);
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goto dospecial;
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}
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log(lfp, "installing: %s\n", target);
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opts &= ~(COMPARE|REMOVE);
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}
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switch (stb.st_mode & S_IFMT) {
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case S_IFDIR:
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if ((d = opendir(target)) == NULL) {
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error("%s: %s\n", target, strerror(errno));
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return;
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}
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(void) sprintf(buf, "D%o %04o 0 0 %s %s %s\n", opts,
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stb.st_mode & 07777, protoname(), protogroup(), rname);
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if (debug)
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printf("buf = %s", buf);
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(void) write(rem, buf, strlen(buf));
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if (response() < 0) {
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closedir(d);
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return;
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}
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if (opts & REMOVE)
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rmchk(opts);
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otp = tp;
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len = tp - target;
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while (dp = readdir(d)) {
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if (!strcmp(dp->d_name, ".") ||
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!strcmp(dp->d_name, ".."))
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continue;
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if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) {
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error("%s/%s: Name too long\n", target,
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dp->d_name);
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continue;
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}
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tp = otp;
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*tp++ = '/';
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cp = dp->d_name;
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while (*tp++ = *cp++)
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;
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tp--;
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sendf(dp->d_name, opts);
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}
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closedir(d);
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(void) write(rem, "E\n", 2);
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(void) response();
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tp = otp;
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*tp = '\0';
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return;
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case S_IFLNK:
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if (u != 1)
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opts |= COMPARE;
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if (stb.st_nlink > 1) {
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struct linkbuf *lp;
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if ((lp = savelink(&stb)) != NULL) {
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/* install link */
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if (*lp->target == 0)
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(void) sprintf(buf, "k%o %s %s\n", opts,
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lp->pathname, rname);
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else
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(void) sprintf(buf, "k%o %s/%s %s\n", opts,
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lp->target, lp->pathname, rname);
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if (debug)
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printf("buf = %s", buf);
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(void) write(rem, buf, strlen(buf));
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(void) response();
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return;
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}
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}
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(void) sprintf(buf, "K%o %o %ld %ld %s %s %s\n", opts,
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stb.st_mode & 07777, stb.st_size, stb.st_mtime,
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protoname(), protogroup(), rname);
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if (debug)
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printf("buf = %s", buf);
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(void) write(rem, buf, strlen(buf));
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if (response() < 0)
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return;
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sizerr = (readlink(target, buf, BUFSIZ) != stb.st_size);
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(void) write(rem, buf, stb.st_size);
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if (debug)
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printf("readlink = %.*s\n", (int)stb.st_size, buf);
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goto done;
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case S_IFREG:
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break;
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default:
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error("%s: not a file or directory\n", target);
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return;
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}
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if (u == 2) {
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if (opts & VERIFY) {
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log(lfp, "need to update: %s\n", target);
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goto dospecial;
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}
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log(lfp, "updating: %s\n", target);
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}
|
|
|
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if (stb.st_nlink > 1) {
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struct linkbuf *lp;
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|
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if ((lp = savelink(&stb)) != NULL) {
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/* install link */
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if (*lp->target == 0)
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(void) sprintf(buf, "k%o %s %s\n", opts,
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lp->pathname, rname);
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else
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(void) sprintf(buf, "k%o %s/%s %s\n", opts,
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lp->target, lp->pathname, rname);
|
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if (debug)
|
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printf("buf = %s", buf);
|
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(void) write(rem, buf, strlen(buf));
|
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(void) response();
|
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return;
|
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}
|
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}
|
|
|
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if ((f = open(target, 0)) < 0) {
|
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error("%s: %s\n", target, strerror(errno));
|
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return;
|
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}
|
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(void) sprintf(buf, "R%o %o %ld %ld %s %s %s\n", opts,
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stb.st_mode & 07777, stb.st_size, stb.st_mtime,
|
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protoname(), protogroup(), rname);
|
|
if (debug)
|
|
printf("buf = %s", buf);
|
|
(void) write(rem, buf, strlen(buf));
|
|
if (response() < 0) {
|
|
(void) close(f);
|
|
return;
|
|
}
|
|
sizerr = 0;
|
|
for (i = 0; i < stb.st_size; i += BUFSIZ) {
|
|
int amt = BUFSIZ;
|
|
if (i + amt > stb.st_size)
|
|
amt = stb.st_size - i;
|
|
if (sizerr == 0 && read(f, buf, amt) != amt)
|
|
sizerr = 1;
|
|
(void) write(rem, buf, amt);
|
|
}
|
|
(void) close(f);
|
|
done:
|
|
if (sizerr) {
|
|
error("%s: file changed size\n", target);
|
|
err();
|
|
} else
|
|
ack();
|
|
f = response();
|
|
if (f < 0 || f == 0 && (opts & COMPARE))
|
|
return;
|
|
dospecial:
|
|
for (sc = subcmds; sc != NULL; sc = sc->sc_next) {
|
|
if (sc->sc_type != SPECIAL)
|
|
continue;
|
|
if (sc->sc_args != NULL && !inlist(sc->sc_args, target))
|
|
continue;
|
|
log(lfp, "special \"%s\"\n", sc->sc_name);
|
|
if (opts & VERIFY)
|
|
continue;
|
|
(void) sprintf(buf, "SFILE=%s;%s\n", target, sc->sc_name);
|
|
if (debug)
|
|
printf("buf = %s", buf);
|
|
(void) write(rem, buf, strlen(buf));
|
|
while (response() > 0)
|
|
;
|
|
}
|
|
}
|
|
|
|
struct linkbuf *
|
|
savelink(stp)
|
|
struct stat *stp;
|
|
{
|
|
struct linkbuf *lp;
|
|
int found = 0;
|
|
|
|
for (lp = ihead; lp != NULL; lp = lp->nextp)
|
|
if (lp->inum == stp->st_ino && lp->devnum == stp->st_dev) {
|
|
lp->count--;
|
|
return(lp);
|
|
}
|
|
lp = (struct linkbuf *) malloc(sizeof(*lp));
|
|
if (lp == NULL)
|
|
log(lfp, "out of memory, link information lost\n");
|
|
else {
|
|
lp->nextp = ihead;
|
|
ihead = lp;
|
|
lp->inum = stp->st_ino;
|
|
lp->devnum = stp->st_dev;
|
|
lp->count = stp->st_nlink - 1;
|
|
strcpy(lp->pathname, target);
|
|
if (Tdest)
|
|
strcpy(lp->target, Tdest);
|
|
else
|
|
*lp->target = 0;
|
|
}
|
|
return(NULL);
|
|
}
|
|
|
|
/*
|
|
* Check to see if file needs to be updated on the remote machine.
|
|
* Returns 0 if no update, 1 if remote doesn't exist, 2 if out of date
|
|
* and 3 if comparing binaries to determine if out of date.
|
|
*/
|
|
update(rname, opts, stp)
|
|
char *rname;
|
|
int opts;
|
|
struct stat *stp;
|
|
{
|
|
register char *cp, *s;
|
|
register off_t size;
|
|
register time_t mtime;
|
|
|
|
if (debug)
|
|
printf("update(%s, %x, %x)\n", rname, opts, stp);
|
|
|
|
/*
|
|
* Check to see if the file exists on the remote machine.
|
|
*/
|
|
(void) sprintf(buf, "Q%s\n", rname);
|
|
if (debug)
|
|
printf("buf = %s", buf);
|
|
(void) write(rem, buf, strlen(buf));
|
|
again:
|
|
cp = s = buf;
|
|
do {
|
|
if (read(rem, cp, 1) != 1)
|
|
lostconn();
|
|
} while (*cp++ != '\n' && cp < &buf[BUFSIZ]);
|
|
|
|
switch (*s++) {
|
|
case 'Y':
|
|
break;
|
|
|
|
case 'N': /* file doesn't exist so install it */
|
|
return(1);
|
|
|
|
case '\1':
|
|
nerrs++;
|
|
if (*s != '\n') {
|
|
if (!iamremote) {
|
|
fflush(stdout);
|
|
(void) write(2, s, cp - s);
|
|
}
|
|
if (lfp != NULL)
|
|
(void) fwrite(s, 1, cp - s, lfp);
|
|
}
|
|
return(0);
|
|
|
|
case '\3':
|
|
*--cp = '\0';
|
|
if (lfp != NULL)
|
|
log(lfp, "update: note: %s\n", s);
|
|
goto again;
|
|
|
|
default:
|
|
*--cp = '\0';
|
|
error("update: unexpected response '%s'\n", s);
|
|
return(0);
|
|
}
|
|
|
|
if (*s == '\n')
|
|
return(2);
|
|
|
|
if (opts & COMPARE)
|
|
return(3);
|
|
|
|
size = 0;
|
|
while (isdigit(*s))
|
|
size = size * 10 + (*s++ - '0');
|
|
if (*s++ != ' ') {
|
|
error("update: size not delimited\n");
|
|
return(0);
|
|
}
|
|
mtime = 0;
|
|
while (isdigit(*s))
|
|
mtime = mtime * 10 + (*s++ - '0');
|
|
if (*s != '\n') {
|
|
error("update: mtime not delimited\n");
|
|
return(0);
|
|
}
|
|
/*
|
|
* File needs to be updated?
|
|
*/
|
|
if (opts & YOUNGER) {
|
|
if (stp->st_mtime == mtime)
|
|
return(0);
|
|
if (stp->st_mtime < mtime) {
|
|
log(lfp, "Warning: %s: remote copy is newer\n", target);
|
|
return(0);
|
|
}
|
|
} else if (stp->st_mtime == mtime && stp->st_size == size)
|
|
return(0);
|
|
return(2);
|
|
}
|
|
|
|
/*
|
|
* Query. Check to see if file exists. Return one of the following:
|
|
* N\n - doesn't exist
|
|
* Ysize mtime\n - exists and its a regular file (size & mtime of file)
|
|
* Y\n - exists and its a directory or symbolic link
|
|
* ^Aerror message\n
|
|
*/
|
|
query(name)
|
|
char *name;
|
|
{
|
|
struct stat stb;
|
|
|
|
if (catname)
|
|
(void) sprintf(tp, "/%s", name);
|
|
|
|
if (lstat(target, &stb) < 0) {
|
|
if (errno == ENOENT)
|
|
(void) write(rem, "N\n", 2);
|
|
else
|
|
error("%s:%s: %s\n", host, target, strerror(errno));
|
|
*tp = '\0';
|
|
return;
|
|
}
|
|
|
|
switch (stb.st_mode & S_IFMT) {
|
|
case S_IFREG:
|
|
(void) sprintf(buf, "Y%ld %ld\n", stb.st_size, stb.st_mtime);
|
|
(void) write(rem, buf, strlen(buf));
|
|
break;
|
|
|
|
case S_IFLNK:
|
|
case S_IFDIR:
|
|
(void) write(rem, "Y\n", 2);
|
|
break;
|
|
|
|
default:
|
|
error("%s: not a file or directory\n", name);
|
|
break;
|
|
}
|
|
*tp = '\0';
|
|
}
|
|
|
|
recvf(cmd, type)
|
|
char *cmd;
|
|
int type;
|
|
{
|
|
register char *cp;
|
|
int f, mode, opts, wrerr, olderrno;
|
|
off_t i, size;
|
|
time_t mtime;
|
|
struct stat stb;
|
|
struct timeval tvp[2];
|
|
char *owner, *group;
|
|
char new[BUFSIZ];
|
|
extern char *tempname;
|
|
|
|
cp = cmd;
|
|
opts = 0;
|
|
while (*cp >= '0' && *cp <= '7')
|
|
opts = (opts << 3) | (*cp++ - '0');
|
|
if (*cp++ != ' ') {
|
|
error("recvf: options not delimited\n");
|
|
return;
|
|
}
|
|
mode = 0;
|
|
while (*cp >= '0' && *cp <= '7')
|
|
mode = (mode << 3) | (*cp++ - '0');
|
|
if (*cp++ != ' ') {
|
|
error("recvf: mode not delimited\n");
|
|
return;
|
|
}
|
|
size = 0;
|
|
while (isdigit(*cp))
|
|
size = size * 10 + (*cp++ - '0');
|
|
if (*cp++ != ' ') {
|
|
error("recvf: size not delimited\n");
|
|
return;
|
|
}
|
|
mtime = 0;
|
|
while (isdigit(*cp))
|
|
mtime = mtime * 10 + (*cp++ - '0');
|
|
if (*cp++ != ' ') {
|
|
error("recvf: mtime not delimited\n");
|
|
return;
|
|
}
|
|
owner = cp;
|
|
while (*cp && *cp != ' ')
|
|
cp++;
|
|
if (*cp != ' ') {
|
|
error("recvf: owner name not delimited\n");
|
|
return;
|
|
}
|
|
*cp++ = '\0';
|
|
group = cp;
|
|
while (*cp && *cp != ' ')
|
|
cp++;
|
|
if (*cp != ' ') {
|
|
error("recvf: group name not delimited\n");
|
|
return;
|
|
}
|
|
*cp++ = '\0';
|
|
|
|
if (type == S_IFDIR) {
|
|
if (catname >= sizeof(stp)) {
|
|
error("%s:%s: too many directory levels\n",
|
|
host, target);
|
|
return;
|
|
}
|
|
stp[catname] = tp;
|
|
if (catname++) {
|
|
*tp++ = '/';
|
|
while (*tp++ = *cp++)
|
|
;
|
|
tp--;
|
|
}
|
|
if (opts & VERIFY) {
|
|
ack();
|
|
return;
|
|
}
|
|
if (lstat(target, &stb) == 0) {
|
|
if (ISDIR(stb.st_mode)) {
|
|
if ((stb.st_mode & 07777) == mode) {
|
|
ack();
|
|
return;
|
|
}
|
|
buf[0] = '\0';
|
|
(void) sprintf(buf + 1,
|
|
"%s: Warning: remote mode %o != local mode %o\n",
|
|
target, stb.st_mode & 07777, mode);
|
|
(void) write(rem, buf, strlen(buf + 1) + 1);
|
|
return;
|
|
}
|
|
errno = ENOTDIR;
|
|
} else if (errno == ENOENT && (mkdir(target, mode) == 0 ||
|
|
chkparent(target) == 0 && mkdir(target, mode) == 0)) {
|
|
if (chog(target, owner, group, mode) == 0)
|
|
ack();
|
|
return;
|
|
}
|
|
error("%s:%s: %s\n", host, target, strerror(errno));
|
|
tp = stp[--catname];
|
|
*tp = '\0';
|
|
return;
|
|
}
|
|
|
|
if (catname)
|
|
(void) sprintf(tp, "/%s", cp);
|
|
cp = rindex(target, '/');
|
|
if (cp == NULL)
|
|
strcpy(new, tempname);
|
|
else if (cp == target)
|
|
(void) sprintf(new, "/%s", tempname);
|
|
else {
|
|
*cp = '\0';
|
|
(void) sprintf(new, "%s/%s", target, tempname);
|
|
*cp = '/';
|
|
}
|
|
|
|
if (type == S_IFLNK) {
|
|
int j;
|
|
|
|
ack();
|
|
cp = buf;
|
|
for (i = 0; i < size; i += j) {
|
|
if ((j = read(rem, cp, size - i)) <= 0)
|
|
cleanup();
|
|
cp += j;
|
|
}
|
|
*cp = '\0';
|
|
if (response() < 0) {
|
|
err();
|
|
return;
|
|
}
|
|
if (symlink(buf, new) < 0) {
|
|
if (errno != ENOENT || chkparent(new) < 0 ||
|
|
symlink(buf, new) < 0)
|
|
goto badn;
|
|
}
|
|
mode &= 0777;
|
|
if (opts & COMPARE) {
|
|
char tbuf[BUFSIZ];
|
|
|
|
if ((i = readlink(target, tbuf, BUFSIZ)) >= 0 &&
|
|
i == size && strncmp(buf, tbuf, size) == 0) {
|
|
(void) unlink(new);
|
|
ack();
|
|
return;
|
|
}
|
|
if (opts & VERIFY)
|
|
goto differ;
|
|
}
|
|
goto fixup;
|
|
}
|
|
|
|
if ((f = creat(new, mode)) < 0) {
|
|
if (errno != ENOENT || chkparent(new) < 0 ||
|
|
(f = creat(new, mode)) < 0)
|
|
goto badn;
|
|
}
|
|
|
|
ack();
|
|
wrerr = 0;
|
|
for (i = 0; i < size; i += BUFSIZ) {
|
|
int amt = BUFSIZ;
|
|
|
|
cp = buf;
|
|
if (i + amt > size)
|
|
amt = size - i;
|
|
do {
|
|
int j = read(rem, cp, amt);
|
|
|
|
if (j <= 0) {
|
|
(void) close(f);
|
|
(void) unlink(new);
|
|
cleanup();
|
|
}
|
|
amt -= j;
|
|
cp += j;
|
|
} while (amt > 0);
|
|
amt = BUFSIZ;
|
|
if (i + amt > size)
|
|
amt = size - i;
|
|
if (wrerr == 0 && write(f, buf, amt) != amt) {
|
|
olderrno = errno;
|
|
wrerr++;
|
|
}
|
|
}
|
|
(void) close(f);
|
|
if (response() < 0) {
|
|
err();
|
|
(void) unlink(new);
|
|
return;
|
|
}
|
|
if (wrerr) {
|
|
error("%s:%s: %s\n", host, new, strerror(errno));
|
|
(void) unlink(new);
|
|
return;
|
|
}
|
|
if (opts & COMPARE) {
|
|
FILE *f1, *f2;
|
|
int c;
|
|
|
|
if ((f1 = fopen(target, "r")) == NULL)
|
|
goto badt;
|
|
if ((f2 = fopen(new, "r")) == NULL) {
|
|
badn:
|
|
error("%s:%s: %s\n", host, new, strerror(errno));
|
|
(void) unlink(new);
|
|
return;
|
|
}
|
|
while ((c = getc(f1)) == getc(f2))
|
|
if (c == EOF) {
|
|
(void) fclose(f1);
|
|
(void) fclose(f2);
|
|
(void) unlink(new);
|
|
ack();
|
|
return;
|
|
}
|
|
(void) fclose(f1);
|
|
(void) fclose(f2);
|
|
if (opts & VERIFY) {
|
|
differ:
|
|
(void) unlink(new);
|
|
buf[0] = '\0';
|
|
(void) sprintf(buf + 1, "need to update: %s\n",target);
|
|
(void) write(rem, buf, strlen(buf + 1) + 1);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set last modified time
|
|
*/
|
|
tvp[0].tv_sec = stb.st_atime; /* old atime from target */
|
|
tvp[0].tv_usec = 0;
|
|
tvp[1].tv_sec = mtime;
|
|
tvp[1].tv_usec = 0;
|
|
if (utimes(new, tvp) < 0) {
|
|
note("%s:utimes failed %s: %s\n", host, new, strerror(errno));
|
|
}
|
|
if (chog(new, owner, group, mode) < 0) {
|
|
(void) unlink(new);
|
|
return;
|
|
}
|
|
fixup:
|
|
if (rename(new, target) < 0) {
|
|
badt:
|
|
error("%s:%s: %s\n", host, target, strerror(errno));
|
|
(void) unlink(new);
|
|
return;
|
|
}
|
|
if (opts & COMPARE) {
|
|
buf[0] = '\0';
|
|
(void) sprintf(buf + 1, "updated %s\n", target);
|
|
(void) write(rem, buf, strlen(buf + 1) + 1);
|
|
} else
|
|
ack();
|
|
}
|
|
|
|
/*
|
|
* Creat a hard link to existing file.
|
|
*/
|
|
hardlink(cmd)
|
|
char *cmd;
|
|
{
|
|
register char *cp;
|
|
struct stat stb;
|
|
char *oldname;
|
|
int opts, exists = 0;
|
|
|
|
cp = cmd;
|
|
opts = 0;
|
|
while (*cp >= '0' && *cp <= '7')
|
|
opts = (opts << 3) | (*cp++ - '0');
|
|
if (*cp++ != ' ') {
|
|
error("hardlink: options not delimited\n");
|
|
return;
|
|
}
|
|
oldname = cp;
|
|
while (*cp && *cp != ' ')
|
|
cp++;
|
|
if (*cp != ' ') {
|
|
error("hardlink: oldname name not delimited\n");
|
|
return;
|
|
}
|
|
*cp++ = '\0';
|
|
|
|
if (catname) {
|
|
(void) sprintf(tp, "/%s", cp);
|
|
}
|
|
if (lstat(target, &stb) == 0) {
|
|
int mode = stb.st_mode & S_IFMT;
|
|
if (mode != S_IFREG && mode != S_IFLNK) {
|
|
error("%s:%s: not a regular file\n", host, target);
|
|
return;
|
|
}
|
|
exists = 1;
|
|
}
|
|
if (chkparent(target) < 0 ) {
|
|
error("%s:%s: %s (no parent)\n",
|
|
host, target, strerror(errno));
|
|
return;
|
|
}
|
|
if (exists && (unlink(target) < 0)) {
|
|
error("%s:%s: %s (unlink)\n",
|
|
host, target, strerror(errno));
|
|
return;
|
|
}
|
|
if (link(oldname, target) < 0) {
|
|
error("%s:can't link %s to %s\n",
|
|
host, target, oldname);
|
|
return;
|
|
}
|
|
ack();
|
|
}
|
|
|
|
/*
|
|
* Check to see if parent directory exists and create one if not.
|
|
*/
|
|
chkparent(name)
|
|
char *name;
|
|
{
|
|
register char *cp;
|
|
struct stat stb;
|
|
|
|
cp = rindex(name, '/');
|
|
if (cp == NULL || cp == name)
|
|
return(0);
|
|
*cp = '\0';
|
|
if (lstat(name, &stb) < 0) {
|
|
if (errno == ENOENT && chkparent(name) >= 0 &&
|
|
mkdir(name, 0777 & ~oumask) >= 0) {
|
|
*cp = '/';
|
|
return(0);
|
|
}
|
|
} else if (ISDIR(stb.st_mode)) {
|
|
*cp = '/';
|
|
return(0);
|
|
}
|
|
*cp = '/';
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* Change owner, group and mode of file.
|
|
*/
|
|
chog(file, owner, group, mode)
|
|
char *file, *owner, *group;
|
|
int mode;
|
|
{
|
|
register int i;
|
|
int uid, gid;
|
|
extern char user[];
|
|
extern int userid;
|
|
|
|
uid = userid;
|
|
if (userid == 0) {
|
|
if (*owner == ':') {
|
|
uid = atoi(owner + 1);
|
|
} else if (pw == NULL || strcmp(owner, pw->pw_name) != 0) {
|
|
if ((pw = getpwnam(owner)) == NULL) {
|
|
if (mode & 04000) {
|
|
note("%s:%s: unknown login name, clearing setuid",
|
|
host, owner);
|
|
mode &= ~04000;
|
|
uid = 0;
|
|
}
|
|
} else
|
|
uid = pw->pw_uid;
|
|
} else
|
|
uid = pw->pw_uid;
|
|
if (*group == ':') {
|
|
gid = atoi(group + 1);
|
|
goto ok;
|
|
}
|
|
} else if ((mode & 04000) && strcmp(user, owner) != 0)
|
|
mode &= ~04000;
|
|
gid = -1;
|
|
if (gr == NULL || strcmp(group, gr->gr_name) != 0) {
|
|
if ((*group == ':' && (getgrgid(gid = atoi(group + 1)) == NULL))
|
|
|| ((gr = getgrnam(group)) == NULL)) {
|
|
if (mode & 02000) {
|
|
note("%s:%s: unknown group", host, group);
|
|
mode &= ~02000;
|
|
}
|
|
} else
|
|
gid = gr->gr_gid;
|
|
} else
|
|
gid = gr->gr_gid;
|
|
if (userid && gid >= 0) {
|
|
if (gr) for (i = 0; gr->gr_mem[i] != NULL; i++)
|
|
if (!(strcmp(user, gr->gr_mem[i])))
|
|
goto ok;
|
|
mode &= ~02000;
|
|
gid = -1;
|
|
}
|
|
ok:
|
|
if (userid)
|
|
setreuid(userid, 0);
|
|
if (chown(file, uid, gid) < 0 ||
|
|
(mode & 07000) && chmod(file, mode) < 0) {
|
|
note("%s: chown or chmod failed: file %s: %s",
|
|
host, file, strerror(errno));
|
|
}
|
|
if (userid)
|
|
setreuid(0, userid);
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Check for files on the machine being updated that are not on the master
|
|
* machine and remove them.
|
|
*/
|
|
rmchk(opts)
|
|
int opts;
|
|
{
|
|
register char *cp, *s;
|
|
struct stat stb;
|
|
|
|
if (debug)
|
|
printf("rmchk()\n");
|
|
|
|
/*
|
|
* Tell the remote to clean the files from the last directory sent.
|
|
*/
|
|
(void) sprintf(buf, "C%o\n", opts & VERIFY);
|
|
if (debug)
|
|
printf("buf = %s", buf);
|
|
(void) write(rem, buf, strlen(buf));
|
|
if (response() < 0)
|
|
return;
|
|
for (;;) {
|
|
cp = s = buf;
|
|
do {
|
|
if (read(rem, cp, 1) != 1)
|
|
lostconn();
|
|
} while (*cp++ != '\n' && cp < &buf[BUFSIZ]);
|
|
|
|
switch (*s++) {
|
|
case 'Q': /* Query if file should be removed */
|
|
/*
|
|
* Return the following codes to remove query.
|
|
* N\n -- file exists - DON'T remove.
|
|
* Y\n -- file doesn't exist - REMOVE.
|
|
*/
|
|
*--cp = '\0';
|
|
(void) sprintf(tp, "/%s", s);
|
|
if (debug)
|
|
printf("check %s\n", target);
|
|
if (except(target))
|
|
(void) write(rem, "N\n", 2);
|
|
else if (lstat(target, &stb) < 0)
|
|
(void) write(rem, "Y\n", 2);
|
|
else
|
|
(void) write(rem, "N\n", 2);
|
|
break;
|
|
|
|
case '\0':
|
|
*--cp = '\0';
|
|
if (*s != '\0')
|
|
log(lfp, "%s\n", s);
|
|
break;
|
|
|
|
case 'E':
|
|
*tp = '\0';
|
|
ack();
|
|
return;
|
|
|
|
case '\1':
|
|
case '\2':
|
|
nerrs++;
|
|
if (*s != '\n') {
|
|
if (!iamremote) {
|
|
fflush(stdout);
|
|
(void) write(2, s, cp - s);
|
|
}
|
|
if (lfp != NULL)
|
|
(void) fwrite(s, 1, cp - s, lfp);
|
|
}
|
|
if (buf[0] == '\2')
|
|
lostconn();
|
|
break;
|
|
|
|
default:
|
|
error("rmchk: unexpected response '%s'\n", buf);
|
|
err();
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check the current directory (initialized by the 'T' command to server())
|
|
* for extraneous files and remove them.
|
|
*/
|
|
clean(cp)
|
|
register char *cp;
|
|
{
|
|
DIR *d;
|
|
register struct direct *dp;
|
|
struct stat stb;
|
|
char *otp;
|
|
int len, opts;
|
|
|
|
opts = 0;
|
|
while (*cp >= '0' && *cp <= '7')
|
|
opts = (opts << 3) | (*cp++ - '0');
|
|
if (*cp != '\0') {
|
|
error("clean: options not delimited\n");
|
|
return;
|
|
}
|
|
if ((d = opendir(target)) == NULL) {
|
|
error("%s:%s: %s\n", host, target, strerror(errno));
|
|
return;
|
|
}
|
|
ack();
|
|
|
|
otp = tp;
|
|
len = tp - target;
|
|
while (dp = readdir(d)) {
|
|
if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
|
|
continue;
|
|
if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) {
|
|
error("%s:%s/%s: Name too long\n",
|
|
host, target, dp->d_name);
|
|
continue;
|
|
}
|
|
tp = otp;
|
|
*tp++ = '/';
|
|
cp = dp->d_name;;
|
|
while (*tp++ = *cp++)
|
|
;
|
|
tp--;
|
|
if (lstat(target, &stb) < 0) {
|
|
error("%s:%s: %s\n", host, target, strerror(errno));
|
|
continue;
|
|
}
|
|
(void) sprintf(buf, "Q%s\n", dp->d_name);
|
|
(void) write(rem, buf, strlen(buf));
|
|
cp = buf;
|
|
do {
|
|
if (read(rem, cp, 1) != 1)
|
|
cleanup();
|
|
} while (*cp++ != '\n' && cp < &buf[BUFSIZ]);
|
|
*--cp = '\0';
|
|
cp = buf;
|
|
if (*cp != 'Y')
|
|
continue;
|
|
if (opts & VERIFY) {
|
|
cp = buf;
|
|
*cp++ = '\0';
|
|
(void) sprintf(cp, "need to remove: %s\n", target);
|
|
(void) write(rem, buf, strlen(cp) + 1);
|
|
} else
|
|
removeit(&stb);
|
|
}
|
|
closedir(d);
|
|
(void) write(rem, "E\n", 2);
|
|
(void) response();
|
|
tp = otp;
|
|
*tp = '\0';
|
|
}
|
|
|
|
/*
|
|
* Remove a file or directory (recursively) and send back an acknowledge
|
|
* or an error message.
|
|
*/
|
|
removeit(stp)
|
|
struct stat *stp;
|
|
{
|
|
DIR *d;
|
|
struct direct *dp;
|
|
register char *cp;
|
|
struct stat stb;
|
|
char *otp;
|
|
int len;
|
|
|
|
switch (stp->st_mode & S_IFMT) {
|
|
case S_IFREG:
|
|
case S_IFLNK:
|
|
if (unlink(target) < 0)
|
|
goto bad;
|
|
goto removed;
|
|
|
|
case S_IFDIR:
|
|
break;
|
|
|
|
default:
|
|
error("%s:%s: not a plain file\n", host, target);
|
|
return;
|
|
}
|
|
|
|
if ((d = opendir(target)) == NULL)
|
|
goto bad;
|
|
|
|
otp = tp;
|
|
len = tp - target;
|
|
while (dp = readdir(d)) {
|
|
if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
|
|
continue;
|
|
if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) {
|
|
error("%s:%s/%s: Name too long\n",
|
|
host, target, dp->d_name);
|
|
continue;
|
|
}
|
|
tp = otp;
|
|
*tp++ = '/';
|
|
cp = dp->d_name;;
|
|
while (*tp++ = *cp++)
|
|
;
|
|
tp--;
|
|
if (lstat(target, &stb) < 0) {
|
|
error("%s:%s: %s\n", host, target, strerror(errno));
|
|
continue;
|
|
}
|
|
removeit(&stb);
|
|
}
|
|
closedir(d);
|
|
tp = otp;
|
|
*tp = '\0';
|
|
if (rmdir(target) < 0) {
|
|
bad:
|
|
error("%s:%s: %s\n", host, target, strerror(errno));
|
|
return;
|
|
}
|
|
removed:
|
|
cp = buf;
|
|
*cp++ = '\0';
|
|
(void) sprintf(cp, "removed %s\n", target);
|
|
(void) write(rem, buf, strlen(cp) + 1);
|
|
}
|
|
|
|
/*
|
|
* Execute a shell command to handle special cases.
|
|
*/
|
|
dospecial(cmd)
|
|
char *cmd;
|
|
{
|
|
int fd[2], status, pid, i;
|
|
register char *cp, *s;
|
|
char sbuf[BUFSIZ];
|
|
extern int userid, groupid;
|
|
|
|
if (pipe(fd) < 0) {
|
|
error("%s\n", strerror(errno));
|
|
return;
|
|
}
|
|
if ((pid = fork()) == 0) {
|
|
/*
|
|
* Return everything the shell commands print.
|
|
*/
|
|
(void) close(0);
|
|
(void) close(1);
|
|
(void) close(2);
|
|
(void) open(_PATH_DEVNULL, O_RDONLY);
|
|
(void) dup(fd[1]);
|
|
(void) dup(fd[1]);
|
|
(void) close(fd[0]);
|
|
(void) close(fd[1]);
|
|
setgid(groupid);
|
|
setuid(userid);
|
|
execl(_PATH_BSHELL, "sh", "-c", cmd, 0);
|
|
_exit(127);
|
|
}
|
|
(void) close(fd[1]);
|
|
s = sbuf;
|
|
*s++ = '\0';
|
|
while ((i = read(fd[0], buf, sizeof(buf))) > 0) {
|
|
cp = buf;
|
|
do {
|
|
*s++ = *cp++;
|
|
if (cp[-1] != '\n') {
|
|
if (s < &sbuf[sizeof(sbuf)-1])
|
|
continue;
|
|
*s++ = '\n';
|
|
}
|
|
/*
|
|
* Throw away blank lines.
|
|
*/
|
|
if (s == &sbuf[2]) {
|
|
s--;
|
|
continue;
|
|
}
|
|
(void) write(rem, sbuf, s - sbuf);
|
|
s = &sbuf[1];
|
|
} while (--i);
|
|
}
|
|
if (s > &sbuf[1]) {
|
|
*s++ = '\n';
|
|
(void) write(rem, sbuf, s - sbuf);
|
|
}
|
|
while ((i = wait(&status)) != pid && i != -1)
|
|
;
|
|
if (i == -1)
|
|
status = -1;
|
|
(void) close(fd[0]);
|
|
if (status)
|
|
error("shell returned %d\n", status);
|
|
else
|
|
ack();
|
|
}
|
|
|
|
/*VARARGS2*/
|
|
log(fp, fmt, a1, a2, a3)
|
|
FILE *fp;
|
|
char *fmt;
|
|
int a1, a2, a3;
|
|
{
|
|
/* Print changes locally if not quiet mode */
|
|
if (!qflag)
|
|
printf(fmt, a1, a2, a3);
|
|
|
|
/* Save changes (for mailing) if really updating files */
|
|
if (!(options & VERIFY) && fp != NULL)
|
|
fprintf(fp, fmt, a1, a2, a3);
|
|
}
|
|
|
|
/*VARARGS1*/
|
|
error(fmt, a1, a2, a3)
|
|
char *fmt;
|
|
int a1, a2, a3;
|
|
{
|
|
static FILE *fp;
|
|
|
|
++nerrs;
|
|
if (!fp && !(fp = fdopen(rem, "w")))
|
|
return;
|
|
if (iamremote) {
|
|
(void)fprintf(fp, "%crdist: ", 0x01);
|
|
(void)fprintf(fp, fmt, a1, a2, a3);
|
|
fflush(fp);
|
|
}
|
|
else {
|
|
fflush(stdout);
|
|
(void)fprintf(stderr, "rdist: ");
|
|
(void)fprintf(stderr, fmt, a1, a2, a3);
|
|
fflush(stderr);
|
|
}
|
|
if (lfp != NULL) {
|
|
(void)fprintf(lfp, "rdist: ");
|
|
(void)fprintf(lfp, fmt, a1, a2, a3);
|
|
fflush(lfp);
|
|
}
|
|
}
|
|
|
|
/*VARARGS1*/
|
|
fatal(fmt, a1, a2,a3)
|
|
char *fmt;
|
|
int a1, a2, a3;
|
|
{
|
|
static FILE *fp;
|
|
|
|
++nerrs;
|
|
if (!fp && !(fp = fdopen(rem, "w")))
|
|
return;
|
|
if (iamremote) {
|
|
(void)fprintf(fp, "%crdist: ", 0x02);
|
|
(void)fprintf(fp, fmt, a1, a2, a3);
|
|
fflush(fp);
|
|
}
|
|
else {
|
|
fflush(stdout);
|
|
(void)fprintf(stderr, "rdist: ");
|
|
(void)fprintf(stderr, fmt, a1, a2, a3);
|
|
fflush(stderr);
|
|
}
|
|
if (lfp != NULL) {
|
|
(void)fprintf(lfp, "rdist: ");
|
|
(void)fprintf(lfp, fmt, a1, a2, a3);
|
|
fflush(lfp);
|
|
}
|
|
cleanup();
|
|
}
|
|
|
|
response()
|
|
{
|
|
char *cp, *s;
|
|
char resp[BUFSIZ];
|
|
|
|
if (debug)
|
|
printf("response()\n");
|
|
|
|
cp = s = resp;
|
|
do {
|
|
if (read(rem, cp, 1) != 1)
|
|
lostconn();
|
|
} while (*cp++ != '\n' && cp < &resp[BUFSIZ]);
|
|
|
|
switch (*s++) {
|
|
case '\0':
|
|
*--cp = '\0';
|
|
if (*s != '\0') {
|
|
log(lfp, "%s\n", s);
|
|
return(1);
|
|
}
|
|
return(0);
|
|
case '\3':
|
|
*--cp = '\0';
|
|
log(lfp, "Note: %s\n",s);
|
|
return(response());
|
|
|
|
default:
|
|
s--;
|
|
/* fall into... */
|
|
case '\1':
|
|
case '\2':
|
|
nerrs++;
|
|
if (*s != '\n') {
|
|
if (!iamremote) {
|
|
fflush(stdout);
|
|
(void) write(2, s, cp - s);
|
|
}
|
|
if (lfp != NULL)
|
|
(void) fwrite(s, 1, cp - s, lfp);
|
|
}
|
|
if (resp[0] == '\2')
|
|
lostconn();
|
|
return(-1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Remove temporary files and do any cleanup operations before exiting.
|
|
*/
|
|
void
|
|
cleanup()
|
|
{
|
|
(void) unlink(tempfile);
|
|
exit(1);
|
|
}
|
|
|
|
note(fmt, a1, a2, a3)
|
|
char *fmt;
|
|
int a1, a2, a3;
|
|
{
|
|
static char buf[BUFSIZ];
|
|
sprintf(buf, fmt, a1, a2, a3);
|
|
comment(buf);
|
|
}
|
|
|
|
comment(s)
|
|
char *s;
|
|
{
|
|
char c = '\3';
|
|
write(rem, &c, 1);
|
|
write(rem, s, strlen(s));
|
|
c = '\n';
|
|
write(rem, &c, 1);
|
|
}
|