1 /* $NetBSD: yppasswdd_mkpw.c,v 1.4 1998/11/06 13:07:18 is 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/types.h> 38 #include <sys/stat.h> 39 #include <sys/time.h> 40 #include <sys/resource.h> 41 #include <sys/wait.h> 42 #include <err.h> 43 #include <fcntl.h> 44 #include <stdio.h> 45 #include <pwd.h> 46 #include <signal.h> 47 #include <stdlib.h> 48 #include <unistd.h> 49 #include <util.h> 50 51 #include <rpc/rpc.h> 52 #include <rpc/xdr.h> 53 #include <rpcsvc/yppasswd.h> 54 55 extern int noshell; 56 extern int nogecos; 57 extern int nopw; 58 extern int make; 59 extern char make_arg[]; 60 61 void make_passwd __P((yppasswd *, struct svc_req *, SVCXPRT *)); 62 63 int handling_request; /* simple mutex */ 64 65 void 66 make_passwd(argp, rqstp, transp) 67 yppasswd *argp; 68 struct svc_req *rqstp; 69 SVCXPRT *transp; 70 { 71 struct passwd *pw; 72 int pfd, tfd; 73 74 #define REPLY(val) do { \ 75 int res = (val); \ 76 if (!svc_sendreply(transp, xdr_int, (caddr_t)&res)) \ 77 svcerr_systemerr(transp); \ 78 } while (0) 79 80 #define RETURN(val) do { \ 81 REPLY((val)); \ 82 handling_request = 0; \ 83 return; \ 84 } while (0) 85 86 if (handling_request) { 87 warnx("already handling request; try again later"); 88 REPLY(1); 89 return; 90 } 91 handling_request = 1; 92 93 pw = getpwnam(argp->newpw.pw_name); 94 if (!pw) 95 RETURN(1); 96 97 if (*pw->pw_passwd && 98 strcmp(crypt(argp->oldpass, pw->pw_passwd), pw->pw_passwd) != 0) 99 RETURN(1); 100 101 pw_init(); 102 tfd = pw_lock(0); 103 if (tfd < 0) { 104 warnx("the passwd file is busy."); 105 RETURN(1); 106 } 107 pfd = open(_PATH_MASTERPASSWD, O_RDONLY, 0); 108 if (pfd < 0) { 109 pw_abort(); 110 warnx(_PATH_MASTERPASSWD); 111 RETURN(1); 112 } 113 114 /* 115 * Get the new password. Reset passwd change time to zero; when 116 * classes are implemented, go and get the "offset" value for this 117 * class and reset the timer. 118 */ 119 if (!nopw) { 120 pw->pw_passwd = argp->newpw.pw_passwd; 121 pw->pw_change = 0; 122 } 123 if (!nogecos) 124 pw->pw_gecos = argp->newpw.pw_gecos; 125 if (!noshell) 126 pw->pw_shell = argp->newpw.pw_shell; 127 128 pw_copy(pfd, tfd, pw, NULL); 129 130 if (pw_mkdb() < 0) { 131 warnx("pw_mkdb failed"); 132 pw_abort(); 133 RETURN(1); 134 } 135 136 /* XXX RESTORE SIGNAL STATE? XXX */ 137 138 /* Notify caller we succeeded. */ 139 REPLY(0); 140 141 /* Update the YP maps. */ 142 if (chdir("/var/yp")) 143 err(1, "/var/yp"); 144 (void) umask(022); 145 (void) system(make_arg); 146 147 handling_request = 0; 148 } 149