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author | wpaul <wpaul@FreeBSD.org> | 1996-02-12 15:09:01 +0000 |
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committer | wpaul <wpaul@FreeBSD.org> | 1996-02-12 15:09:01 +0000 |
commit | cddbdd03cad8377326f29999f7873a6dd0b3a0ff (patch) | |
tree | b703880bdbddd91df70e1980b86153e851a2dfc8 /usr.sbin/rpc.yppasswdd/pw_util.c | |
parent | 31da7a08764484c0b96352dc6ef009fd4fcee60c (diff) | |
parent | 12f2e571f2f4854fee5b4fcefe9b6dadcc2f834f (diff) | |
download | FreeBSD-src-cddbdd03cad8377326f29999f7873a6dd0b3a0ff.zip FreeBSD-src-cddbdd03cad8377326f29999f7873a6dd0b3a0ff.tar.gz |
This commit was generated by cvs2svn to compensate for changes in r14062,
which included commits to RCS files with non-trunk default branches.
Diffstat (limited to 'usr.sbin/rpc.yppasswdd/pw_util.c')
-rw-r--r-- | usr.sbin/rpc.yppasswdd/pw_util.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/usr.sbin/rpc.yppasswdd/pw_util.c b/usr.sbin/rpc.yppasswdd/pw_util.c new file mode 100644 index 0000000..bfd5c5b --- /dev/null +++ b/usr.sbin/rpc.yppasswdd/pw_util.c @@ -0,0 +1,174 @@ +/*- + * Copyright (c) 1990, 1993, 1994 + * 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 +static char sccsid[] = "@(#)pw_util.c 8.3 (Berkeley) 4/2/94"; +#endif /* not lint */ + +/* + * This file is used by all the "password" programs; vipw(8), chpass(1), + * and passwd(1). + */ + +#include <sys/param.h> +#include <sys/time.h> +#include <sys/resource.h> +#include <sys/stat.h> +#include <sys/wait.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <paths.h> +#include <pwd.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <pw_util.h> +#include "yppasswdd_extern.h" + +int pstat; +pid_t pid; + +void +pw_init() +{ + struct rlimit rlim; + + /* Unlimited resource limits. */ + rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY; + (void)setrlimit(RLIMIT_CPU, &rlim); + (void)setrlimit(RLIMIT_FSIZE, &rlim); + (void)setrlimit(RLIMIT_STACK, &rlim); + (void)setrlimit(RLIMIT_DATA, &rlim); + (void)setrlimit(RLIMIT_RSS, &rlim); + + /* Don't drop core (not really necessary, but GP's). */ + rlim.rlim_cur = rlim.rlim_max = 0; + (void)setrlimit(RLIMIT_CORE, &rlim); + + /* Turn off signals. */ + /* (void)signal(SIGALRM, SIG_IGN); */ + (void)signal(SIGHUP, SIG_IGN); + (void)signal(SIGINT, SIG_IGN); + (void)signal(SIGPIPE, SIG_IGN); + (void)signal(SIGQUIT, SIG_IGN); + (void)signal(SIGTSTP, SIG_IGN); + (void)signal(SIGTTOU, SIG_IGN); + + /* Create with exact permissions. */ + (void)umask(0); +} + +static int lockfd; + +int +pw_lock() +{ + /* + * If the master password file doesn't exist, the system is hosed. + * Might as well try to build one. Set the close-on-exec bit so + * that users can't get at the encrypted passwords while editing. + * Open should allow flock'ing the file; see 4.4BSD. XXX + */ + lockfd = open(passfile, O_RDONLY, 0); + if (lockfd < 0 || fcntl(lockfd, F_SETFD, 1) == -1) { + yp_error("%s: %s", passfile, strerror(errno)); + return (-1); + } + if (flock(lockfd, LOCK_EX|LOCK_NB)) { + yp_error("%s: the password db file is busy", passfile); + return(-1); + } + return (lockfd); +} + +int +pw_tmp() +{ + static char path[MAXPATHLEN]; + int fd; + char *p; + + sprintf(path,"%s",passfile); + if ((p = strrchr(path, '/'))) + ++p; + else + p = path; + strcpy(p, "pw.XXXXXX"); + if ((fd = mkstemp(path)) == -1) { + yp_error("%s: %s", path, strerror(errno)); + return(-1); + } + tempname = path; + return (fd); +} + +int +pw_mkdb() +{ + + yp_error("rebuilding the database..."); + (void)fflush(stderr); + /* Temporarily turn off SIGCHLD catching */ + install_reaper(0); + if (!(pid = vfork())) { + execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL); + pw_error(_PATH_PWD_MKDB, 1, 1); + return(-1); + } + /* Handle this ourselves. */ + reaper(-1); + /* Put the handler back. Foo. */ + install_reaper(1); + if (pid == -1 || !WIFEXITED(pstat) || WEXITSTATUS(pstat) != 0) { + return (-1); + } + yp_error("done"); + return (0); +} + +void +pw_error(name, err, eval) + char *name; + int err, eval; +{ + if (err && name != NULL) + yp_error("%s", name); + + yp_error("%s: unchanged", passfile); + (void)unlink(tempname); +} |