1 /* $NetBSD: yppasswdd_mkpw.c,v 1.9 2001/08/18 19:35:32 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Jason R. Thorpe <thorpej@NetBSD.ORG> 5 * All rights reserved. 6 * 7 * Copyright (c) 1994 Mats O Jansson <moj@stacken.kth.se> 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Mats O Jansson 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 25 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 26 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 28 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 #ifndef lint 39 __RCSID("$NetBSD: yppasswdd_mkpw.c,v 1.9 2001/08/18 19:35:32 ad Exp $"); 40 #endif /* not lint */ 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/stat.h> 45 #include <sys/time.h> 46 #include <sys/resource.h> 47 #include <sys/wait.h> 48 49 #include <err.h> 50 #include <fcntl.h> 51 #include <stdio.h> 52 #include <pwd.h> 53 #include <signal.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <unistd.h> 57 #include <util.h> 58 #include <limits.h> 59 60 #include <rpc/rpc.h> 61 #include <rpc/xdr.h> 62 #include <rpcsvc/yppasswd.h> 63 64 #include "extern.h" 65 66 int handling_request; /* simple mutex */ 67 68 void 69 make_passwd(yppasswd *argp, struct svc_req *rqstp, SVCXPRT *transp) 70 { 71 struct passwd *pw; 72 int pfd, tfd; 73 char mpwd[MAXPATHLEN]; 74 75 #define REPLY(val) do { \ 76 int res = (val); \ 77 if (!svc_sendreply(transp, xdr_int, (caddr_t)&res)) \ 78 svcerr_systemerr(transp); \ 79 } while (0) 80 81 #define RETURN(val) do { \ 82 REPLY((val)); \ 83 handling_request = 0; \ 84 return; \ 85 } while (0) 86 87 if (handling_request) { 88 warnx("already handling request; try again later"); 89 REPLY(1); 90 return; 91 } 92 handling_request = 1; 93 94 pw = getpwnam(argp->newpw.pw_name); 95 if (!pw) 96 RETURN(1); 97 98 if (*pw->pw_passwd && 99 strcmp(crypt(argp->oldpass, pw->pw_passwd), pw->pw_passwd) != 0) 100 RETURN(1); 101 102 pw_init(); 103 tfd = pw_lock(0); 104 if (tfd < 0) { 105 warnx("the passwd file is busy."); 106 RETURN(1); 107 } 108 (void)strlcpy(mpwd, pw_getprefix(), sizeof(mpwd)); 109 (void)strlcat(mpwd, _PATH_MASTERPASSWD, sizeof(mpwd)); 110 pfd = open(mpwd, O_RDONLY, 0); 111 if (pfd < 0) { 112 pw_abort(); 113 warnx("%s", mpwd); 114 RETURN(1); 115 } 116 117 /* 118 * Get the new password. Reset passwd change time to zero; when 119 * classes are implemented, go and get the "offset" value for this 120 * class and reset the timer. 121 */ 122 if (!nopw) { 123 pw->pw_passwd = argp->newpw.pw_passwd; 124 pw->pw_change = 0; 125 } 126 if (!nogecos) 127 pw->pw_gecos = argp->newpw.pw_gecos; 128 if (!noshell) 129 pw->pw_shell = argp->newpw.pw_shell; 130 131 pw_copy(pfd, tfd, pw, NULL); 132 133 if (pw_mkdb(pw->pw_name, 0) < 0) { 134 warnx("pw_mkdb failed"); 135 pw_abort(); 136 RETURN(1); 137 } 138 139 /* XXX RESTORE SIGNAL STATE? XXX */ 140 141 /* Notify caller we succeeded. */ 142 REPLY(0); 143 144 /* Update the YP maps. */ 145 if (chdir("/var/yp")) 146 err(EXIT_FAILURE, "/var/yp"); 147 (void) umask(022); 148 (void) system(make_arg); 149 150 handling_request = 0; 151 } 152