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Diffstat (limited to 'usr.bin/rdist/server.c')
-rw-r--r--usr.bin/rdist/server.c1634
1 files changed, 0 insertions, 1634 deletions
diff --git a/usr.bin/rdist/server.c b/usr.bin/rdist/server.c
deleted file mode 100644
index b2ae4d37cd5a..000000000000
--- a/usr.bin/rdist/server.c
+++ /dev/null
@@ -1,1634 +0,0 @@
-/*
- * Copyright (c) 1983, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)server.c 8.1 (Berkeley) 6/9/93";
-#endif
-static const char rcsid[] =
- "$FreeBSD$";
-#endif /* not lint */
-
-#include <sys/types.h>
-
-#include <sys/wait.h>
-#include "defs.h"
-
-#define ack() (void) write(rem, "\0\n", 2)
-#define err() (void) write(rem, "\1\n", 2)
-
-struct linkbuf *ihead = NULL; /* list of files with more than one link */
-char buf[BUFSIZ]; /* general purpose buffer */
-char target[BUFSIZ]; /* target/source directory name */
-char source[BUFSIZ]; /* source directory name */
-char *tp; /* pointer to end of target name */
-char *Tdest; /* pointer to last T dest*/
-int catname; /* cat name to target name */
-char *stp[32]; /* stack of saved tp's for directories */
-int oumask; /* old umask for creating files */
-
-extern FILE *lfp; /* log file for mailing changes */
-
-static int chkparent __P((char *));
-static void clean __P((char *));
-static void comment __P((char *));
-static void dospecial __P((char *));
-static int fchog __P((int, char *, char *, char *, int));
-static void hardlink __P((char *));
-static void note __P((const char *, ...));
-static void query __P((char *));
-static void recvf __P((char *, int));
-static void removeit __P((struct stat *));
-static int response __P((void));
-static void rmchk __P((int));
-static struct linkbuf *
- savelink __P((struct stat *));
-static void sendf __P((char *, int));
-static int update __P((char *, int, struct stat *));
-
-/*
- * Server routine to read requests and process them.
- * Commands are:
- * Tname - Transmit file if out of date
- * Vname - Verify if file out of date or not
- * Qname - Query if file exists. Return mtime & size if it does.
- */
-void
-server()
-{
- char cmdbuf[BUFSIZ];
- register char *cp;
-
- signal(SIGHUP, cleanup);
- signal(SIGINT, cleanup);
- signal(SIGQUIT, cleanup);
- signal(SIGTERM, cleanup);
- signal(SIGPIPE, cleanup);
-
- rem = 0;
- oumask = umask(0);
- (void) snprintf(buf, sizeof(buf), "V%d\n", VERSION);
- (void) write(rem, buf, strlen(buf));
-
- for (;;) {
- cp = cmdbuf;
- if (read(rem, cp, 1) <= 0)
- return;
- if (*cp++ == '\n') {
- error("server: expected control record\n");
- continue;
- }
- do {
- if (read(rem, cp, 1) != 1)
- cleanup(0);
- } while (*cp++ != '\n' && cp < &cmdbuf[BUFSIZ]);
- *--cp = '\0';
- cp = cmdbuf;
- switch (*cp++) {
- case 'T': /* init target file/directory name */
- catname = 1; /* target should be directory */
- goto dotarget;
-
- case 't': /* init target file/directory name */
- catname = 0;
- dotarget:
- if (exptilde(target, cp, sizeof(target)) == NULL)
- continue;
- tp = target;
- while (*tp)
- tp++;
- ack();
- continue;
-
- case 'R': /* Transfer a regular file. */
- recvf(cp, S_IFREG);
- continue;
-
- case 'D': /* Transfer a directory. */
- recvf(cp, S_IFDIR);
- continue;
-
- case 'K': /* Transfer symbolic link. */
- recvf(cp, S_IFLNK);
- continue;
-
- case 'k': /* Transfer hard link. */
- hardlink(cp);
- continue;
-
- case 'E': /* End. (of directory) */
- *tp = '\0';
- if (catname <= 0) {
- error("server: too many 'E's\n");
- continue;
- }
- tp = stp[--catname];
- *tp = '\0';
- ack();
- continue;
-
- case 'C': /* Clean. Cleanup a directory */
- clean(cp);
- continue;
-
- case 'Q': /* Query. Does the file/directory exist? */
- query(cp);
- continue;
-
- case 'S': /* Special. Execute commands */
- dospecial(cp);
- continue;
-
-#ifdef notdef
- /*
- * These entries are reserved but not currently used.
- * The intent is to allow remote hosts to have master copies.
- * Currently, only the host rdist runs on can have masters.
- */
- case 'X': /* start a new list of files to exclude */
- except = bp = NULL;
- case 'x': /* add name to list of files to exclude */
- if (*cp == '\0') {
- ack();
- continue;
- }
- if (*cp == '~') {
- if (exptilde(buf, cp, sizeof(buf)) == NULL)
- continue;
- cp = buf;
- }
- if (bp == NULL)
- except = bp = expand(makeblock(NAME, cp), E_VARS);
- else
- bp->b_next = expand(makeblock(NAME, cp), E_VARS);
- while (bp->b_next != NULL)
- bp = bp->b_next;
- ack();
- continue;
-
- case 'I': /* Install. Transfer file if out of date. */
- opts = 0;
- while (*cp >= '0' && *cp <= '7')
- opts = (opts << 3) | (*cp++ - '0');
- if (*cp++ != ' ') {
- error("server: options not delimited\n");
- return;
- }
- install(cp, opts);
- continue;
-
- case 'L': /* Log. save message in log file */
- log(lfp, cp);
- continue;
-#endif
-
- case '\1':
- nerrs++;
- continue;
-
- case '\2':
- return;
-
- default:
- error("server: unknown command '%s'\n", cp);
- case '\0':
- continue;
- }
- }
-}
-
-/*
- * Update the file(s) if they are different.
- * destdir = 1 if destination should be a directory
- * (i.e., more than one source is being copied to the same destination).
- */
-void
-install(src, dest, destdir, opts)
- char *src, *dest;
- int destdir, opts;
-{
- char *rname;
- char destcopy[BUFSIZ];
-
- if (opts & WHOLE)
- source[0] = '\0';
- else
- strcpy(source, src);
-
- if (dest == NULL) {
- opts &= ~WHOLE; /* WHOLE mode only useful if renaming */
- dest = src;
- }
-
- if (nflag || debug) {
- printf("%s%s%s%s%s %s %s\n", opts & VERIFY ? "verify":"install",
- opts & WHOLE ? " -w" : "",
- opts & YOUNGER ? " -y" : "",
- opts & COMPARE ? " -b" : "",
- opts & REMOVE ? " -R" : "", src, dest);
- if (nflag)
- return;
- }
-
- rname = exptilde(target, src, sizeof(target));
- if (rname == NULL)
- return;
- tp = target;
- while (*tp)
- tp++;
- /*
- * If we are renaming a directory and we want to preserve
- * the directory heirarchy (-w), we must strip off the leading
- * directory name and preserve the rest.
- */
- if (opts & WHOLE) {
- while (*rname == '/')
- rname++;
- destdir = 1;
- } else {
- rname = rindex(target, '/');
- if (rname == NULL)
- rname = target;
- else
- rname++;
- }
- if (debug)
- printf("target = %s, rname = %s\n", target, rname);
- /*
- * Pass the destination file/directory name to remote.
- */
- (void) snprintf(buf, sizeof(buf), "%c%s\n", destdir ? 'T' : 't', dest);
- if (debug)
- printf("buf = %s", buf);
- (void) write(rem, buf, strlen(buf));
- if (response() < 0)
- return;
-
- /*
- * Save the name of the remote target destination if we are
- * in WHOLE mode (destdir > 0) or if the source and destination
- * are not the same. This info will be used later for maintaining
- * hardlink info.
- */
- if (destdir || (src && dest && strcmp(src, dest))) {
- strcpy(destcopy, dest);
- Tdest = destcopy;
- }
- sendf(rname, opts);
- Tdest = 0;
-}
-
-static char *
-remotename(pathname, src)
- char *pathname;
- char *src;
-{
- char *cp;
- int len;
-
- cp = pathname;
- len = strlen(src);
- if (0 == strncmp(pathname, src, len))
- cp += len;
- if (*cp == '/')
- cp ++;
- return(cp);
-}
-
-void
-installlink(lp, rname, opts)
- struct linkbuf *lp;
- char *rname;
- int opts;
-{
- if (*lp->target == 0)
- (void) snprintf(buf, sizeof(buf), "k%o %s %s\n",
- opts, lp->pathname, rname);
- else
- (void) snprintf(buf, sizeof(buf), "k%o %s/%s %s\n",
- opts, lp->target,
- remotename(lp->pathname, lp->src), rname);
-
- if (debug) {
- printf("lp->src = %s\n", lp->src);
- printf("lp->target = %s\n", lp->target);
- printf("lp->pathname = %s\n", lp->pathname);
- printf("rname = %s\n", rname);
- printf("buf = %s", buf);
- }
- (void) write(rem, buf, strlen(buf));
- (void) response();
-}
-
-#define protoname() (pw ? pw->pw_name : user)
-#define protogroup() (gr ? gr->gr_name : group)
-/*
- * Transfer the file or directory in target[].
- * rname is the name of the file on the remote host.
- */
-static void
-sendf(rname, opts)
- char *rname;
- int opts;
-{
- register struct subcmd *sc;
- struct stat stb;
- int sizerr, f, u, len;
- off_t i;
- DIR *d;
- struct dirent *dp;
- char *otp, *cp;
- extern struct subcmd *subcmds;
- static char user[15], group[15];
-
- if (debug)
- printf("sendf(%s, %x)\n", rname, opts);
-
- if (except(target))
- return;
- if ((opts & FOLLOW ? stat(target, &stb) : lstat(target, &stb)) < 0) {
- error("%s: %s\n", target, strerror(errno));
- return;
- }
- if ((u = update(rname, opts, &stb)) == 0) {
- if ((stb.st_mode & S_IFMT) == S_IFREG && stb.st_nlink > 1)
- (void) savelink(&stb);
- return;
- }
-
- if (pw == NULL || pw->pw_uid != stb.st_uid)
- if ((pw = getpwuid(stb.st_uid)) == NULL) {
- log(lfp, "%s: no password entry for uid %d \n",
- target, stb.st_uid);
- pw = NULL;
- (void)snprintf(user, sizeof(user), ":%lu", stb.st_uid);
- }
- if (gr == NULL || gr->gr_gid != stb.st_gid)
- if ((gr = getgrgid(stb.st_gid)) == NULL) {
- log(lfp, "%s: no name for group %d\n",
- target, stb.st_gid);
- gr = NULL;
- (void)snprintf(group, sizeof(group), ":%lu", stb.st_gid);
- }
- if (u == 1) {
- if (opts & VERIFY) {
- log(lfp, "need to install: %s\n", target);
- goto dospecial;
- }
- log(lfp, "installing: %s\n", target);
- opts &= ~(COMPARE|REMOVE);
- }
-
- switch (stb.st_mode & S_IFMT) {
- case S_IFDIR:
- if ((d = opendir(target)) == NULL) {
- error("%s: %s\n", target, strerror(errno));
- return;
- }
- (void) snprintf(buf, sizeof(buf), "D%o %04o 0 0 %s %s %s\n",
- opts, stb.st_mode & 07777, protoname(), protogroup(),
- rname);
- if (debug)
- printf("buf = %s", buf);
- (void) write(rem, buf, strlen(buf));
- if (response() < 0) {
- closedir(d);
- return;
- }
-
- if (opts & REMOVE)
- rmchk(opts);
-
- 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: Name too long\n", target,
- dp->d_name);
- continue;
- }
- tp = otp;
- *tp++ = '/';
- cp = dp->d_name;
- while ((*tp++ = *cp++))
- ;
- tp--;
- sendf(dp->d_name, opts);
- }
- closedir(d);
- (void) write(rem, "E\n", 2);
- (void) response();
- tp = otp;
- *tp = '\0';
- return;
-
- case S_IFLNK:
- if (u != 1)
- opts |= COMPARE;
- if (stb.st_nlink > 1) {
- struct linkbuf *lp;
-
- if ((lp = savelink(&stb)) != NULL) {
- installlink(lp, rname, opts);
- return;
- }
- }
- (void) snprintf(buf, sizeof(buf),
- "K%o %o %qd %ld %s %s %s\n", opts,
- stb.st_mode & 07777, stb.st_size, stb.st_mtime,
- protoname(), protogroup(), rname);
- if (debug)
- printf("buf = %s", buf);
- (void) write(rem, buf, strlen(buf));
- if (response() < 0)
- return;
- sizerr = (readlink(target, buf, BUFSIZ - 1) != stb.st_size);
- (void) write(rem, buf, stb.st_size);
- if (debug)
- printf("readlink = %.*s\n", (int)stb.st_size, buf);
- goto done;
-
- case S_IFREG:
- break;
-
- default:
- error("%s: not a file or directory\n", target);
- return;
- }
-
- if (u == 2) {
- if (opts & VERIFY) {
- log(lfp, "need to update: %s\n", target);
- goto dospecial;
- }
- log(lfp, "updating: %s\n", target);
- }
-
- if (stb.st_nlink > 1) {
- struct linkbuf *lp;
-
- if ((lp = savelink(&stb)) != NULL) {
- installlink(lp, rname, opts);
- return;
- }
- }
-
- if ((f = open(target, O_RDONLY, 0)) < 0) {
- error("%s: %s\n", target, strerror(errno));
- return;
- }
- (void) snprintf(buf, sizeof(buf), "R%o %o %qd %ld %s %s %s\n", opts,
- stb.st_mode & 07777, stb.st_size, stb.st_mtime,
- 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) snprintf(buf, sizeof(buf), "SFILE=%s;%s\n", target,
- sc->sc_name);
- if (debug)
- printf("buf = %s", buf);
- (void) write(rem, buf, strlen(buf));
- while (response() > 0)
- ;
- }
-}
-
-static struct linkbuf *
-savelink(stp)
- struct stat *stp;
-{
- struct linkbuf *lp;
-
- 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);
- strcpy(lp->src, source);
- 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.
- */
-static int
-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, %p)\n", rname, opts, stp);
-
- /*
- * Check to see if the file exists on the remote machine.
- */
- (void) snprintf(buf, sizeof(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(0);
- } 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
- */
-static void
-query(name)
- char *name;
-{
- struct stat stb;
-
- if (catname)
- (void) snprintf(tp, sizeof(target) - (tp - target), "/%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) snprintf(buf, sizeof(buf), "Y%qd %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';
-}
-
-static void
-recvf(cmd, type)
- char *cmd;
- int type;
-{
- register char *cp;
- int f = -1, 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) snprintf(buf + 1, sizeof(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 (fchog(-1, 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) snprintf(tp, sizeof(target) - (tp - target), "/%s", cp);
- cp = rindex(target, '/');
- if (cp == NULL)
- strcpy(new, tempname);
- else if (cp == target)
- (void) snprintf(new, sizeof(new), "/%s", tempname);
- else {
- *cp = '\0';
- (void) snprintf(new, sizeof(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(0);
- 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 badnew1;
- }
- mode &= 0777;
- if (opts & COMPARE) {
- char tbuf[BUFSIZ];
-
- if ((i = readlink(target, tbuf, BUFSIZ - 1)) >= 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 badnew1;
- }
-
- 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(0);
- }
- 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++;
- }
- }
- if (response() < 0) {
- err();
- goto badnew2;
- }
- if (wrerr)
- goto badnew1;
- if (opts & COMPARE) {
- FILE *f1, *f2;
- int c;
-
- if ((f1 = fopen(target, "r")) == NULL)
- goto badtarget;
- if ((f2 = fopen(new, "r")) == NULL) {
-badnew1: error("%s:%s: %s\n", host, new, strerror(errno));
- goto badnew2;
- }
- while ((c = getc(f1)) == getc(f2))
- if (c == EOF) {
- (void) fclose(f1);
- (void) fclose(f2);
- ack();
- goto badnew2;
- }
- (void) fclose(f1);
- (void) fclose(f2);
- if (opts & VERIFY) {
-differ: buf[0] = '\0';
- (void) snprintf(buf + 1, sizeof(buf) - 1,
- "need to update: %s\n",target);
- (void) write(rem, buf, strlen(buf + 1) + 1);
- goto badnew2;
- }
- }
-
- /*
- * Set last modified time
- */
- tvp[0].tv_sec = time(0);
- 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 (fchog(f, new, owner, group, mode) < 0) {
-badnew2: if (f != -1) (void) close(f);
- (void) unlink(new);
- return;
- }
- (void) close(f);
-
-fixup: if (rename(new, target) < 0) {
-badtarget: error("%s:%s: %s\n", host, target, strerror(errno));
- (void) unlink(new);
- return;
- }
-
- if (opts & COMPARE) {
- buf[0] = '\0';
- (void) snprintf(buf + 1, sizeof(buf) - 1,
- "updated %s\n", target);
- (void) write(rem, buf, strlen(buf + 1) + 1);
- } else
- ack();
-}
-
-/*
- * Creat a hard link to existing file.
- */
-static void
-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) snprintf(tp, sizeof(target) - (tp - target), "/%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.
- */
-static int
-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.
- */
-static int
-fchog(fd, file, owner, group, mode)
- int fd;
- 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 ((fd != -1 && fchown(fd, uid, gid) < 0) || chown(file, uid, gid) < 0)
- note("%s: %s chown: %s", host, file, strerror(errno));
- else if (mode & 07000 &&
- ((fd != -1 && fchmod(fd, mode) < 0) || chmod(file, mode) < 0))
- note("%s: %s chmod: %s", host, file, strerror(errno));
- return(0);
-}
-
-/*
- * Check for files on the machine being updated that are not on the master
- * machine and remove them.
- */
-static void
-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) snprintf(buf, sizeof(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(0);
- } 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) snprintf(tp, sizeof(target) - (tp - target),
- "/%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(0);
- 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.
- */
-static void
-clean(cp)
- register char *cp;
-{
- DIR *d;
- register struct dirent *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) snprintf(buf, sizeof(buf), "Q%s\n", dp->d_name);
- (void) write(rem, buf, strlen(buf));
- cp = buf;
- do {
- if (read(rem, cp, 1) != 1)
- cleanup(0);
- } while (*cp++ != '\n' && cp < &buf[BUFSIZ]);
- *--cp = '\0';
- cp = buf;
- if (*cp != 'Y')
- continue;
- if (opts & VERIFY) {
- cp = buf;
- *cp++ = '\0';
- (void) snprintf(cp, sizeof(buf) - 1,
- "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.
- */
-static void
-removeit(stp)
- struct stat *stp;
-{
- DIR *d;
- struct dirent *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) snprintf(cp, sizeof(buf) - 1, "removed %s\n", target);
- (void) write(rem, buf, strlen(cp) + 1);
-}
-
-/*
- * Execute a shell command to handle special cases.
- */
-static void
-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();
-}
-
-#if __STDC__
-#include <stdarg.h>
-#else
-#include <varargs.h>
-#endif
-
-void
-#if __STDC__
-log(FILE *fp, const char *fmt, ...)
-#else
-log(fp, fmt, va_alist)
- FILE *fp;
- char *fmt;
- va_dcl
-#endif
-{
- va_list ap;
-#if __STDC__
- va_start(ap, fmt);
-#else
- va_start(ap);
-#endif
- /* Print changes locally if not quiet mode */
- if (!qflag)
- (void)vprintf(fmt, ap);
-
- /* Save changes (for mailing) if really updating files */
- if (!(options & VERIFY) && fp != NULL)
- (void)vfprintf(fp, fmt, ap);
- va_end(ap);
-}
-
-void
-#if __STDC__
-error(const char *fmt, ...)
-#else
-error(fmt, va_alist)
- char *fmt;
- va_dcl
-#endif
-{
- static FILE *fp;
- va_list ap;
-#if __STDC__
- va_start(ap, fmt);
-#else
- va_start(ap);
-#endif
-
- ++nerrs;
- if (!fp && !(fp = fdopen(rem, "w")))
- return;
- if (iamremote) {
- (void)fprintf(fp, "%crdist: ", 0x01);
- (void)vfprintf(fp, fmt, ap);
- fflush(fp);
- }
- else {
- fflush(stdout);
- (void)fprintf(stderr, "rdist: ");
- (void)vfprintf(stderr, fmt, ap);
- fflush(stderr);
- }
- if (lfp != NULL) {
- (void)fprintf(lfp, "rdist: ");
- (void)vfprintf(lfp, fmt, ap);
- fflush(lfp);
- }
- va_end(ap);
-}
-
-void
-#if __STDC__
-fatal(const char *fmt, ...)
-#else
-fatal(fmt, va_alist)
- char *fmt;
- va_dcl
-#endif
-{
- static FILE *fp;
- va_list ap;
-#if __STDC__
- va_start(ap, fmt);
-#else
- va_start(ap);
-#endif
-
- ++nerrs;
- if (!fp && !(fp = fdopen(rem, "w")))
- return;
- if (iamremote) {
- (void)fprintf(fp, "%crdist: ", 0x02);
- (void)vfprintf(fp, fmt, ap);
- fflush(fp);
- }
- else {
- fflush(stdout);
- (void)fprintf(stderr, "rdist: ");
- (void)vfprintf(stderr, fmt, ap);
- fflush(stderr);
- }
- if (lfp != NULL) {
- (void)fprintf(lfp, "rdist: ");
- (void)vfprintf(lfp, fmt, ap);
- fflush(lfp);
- }
- cleanup(0);
-}
-
-static int
-response()
-{
- char *cp, *s;
- char resp[BUFSIZ];
-
- if (debug)
- printf("response()\n");
-
- cp = s = resp;
- do {
- if (read(rem, cp, 1) != 1)
- lostconn(0);
- } 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(0);
- return(-1);
- }
-}
-
-/*
- * Remove temporary files and do any cleanup operations before exiting.
- */
-void
-cleanup(signo)
- int signo;
-{
- (void) unlink(tempfile);
- exit(1);
-}
-
-static void
-#if __STDC__
-note(const char *fmt, ...)
-#else
-note(fmt, va_alist)
- char *fmt;
- va_dcl
-#endif
-{
- static char buf[BUFSIZ];
- va_list ap;
-#if __STDC__
- va_start(ap, fmt);
-#else
- va_start(ap);
-#endif
- (void)vsnprintf(buf, sizeof(buf), fmt, ap);
- va_end(ap);
- comment(buf);
-}
-
-static void
-comment(s)
- char *s;
-{
- char c;
-
- c = '\3';
- write(rem, &c, 1);
- write(rem, s, strlen(s));
- c = '\n';
- write(rem, &c, 1);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-09 00:19:54 +0000