1dea673e9SRodney W. Grimes /*- 2dea673e9SRodney W. Grimes * Copyright (c) 1990, 1993, 1994 3dea673e9SRodney W. Grimes * The Regents of the University of California. All rights reserved. 4dea673e9SRodney W. Grimes * 5dea673e9SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 6dea673e9SRodney W. Grimes * modification, are permitted provided that the following conditions 7dea673e9SRodney W. Grimes * are met: 8dea673e9SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 9dea673e9SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 10dea673e9SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 11dea673e9SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 12dea673e9SRodney W. Grimes * documentation and/or other materials provided with the distribution. 13dea673e9SRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 14dea673e9SRodney W. Grimes * must display the following acknowledgement: 15dea673e9SRodney W. Grimes * This product includes software developed by the University of 16dea673e9SRodney W. Grimes * California, Berkeley and its contributors. 17dea673e9SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 18dea673e9SRodney W. Grimes * may be used to endorse or promote products derived from this software 19dea673e9SRodney W. Grimes * without specific prior written permission. 20dea673e9SRodney W. Grimes * 21dea673e9SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22dea673e9SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23dea673e9SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24dea673e9SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25dea673e9SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26dea673e9SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27dea673e9SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28dea673e9SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29dea673e9SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30dea673e9SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31dea673e9SRodney W. Grimes * SUCH DAMAGE. 32dea673e9SRodney W. Grimes */ 33dea673e9SRodney W. Grimes 34dea673e9SRodney W. Grimes #ifndef lint 358b76e1d7SPhilippe Charnier #if 0 36dea673e9SRodney W. Grimes static char sccsid[] = "@(#)pw_scan.c 8.3 (Berkeley) 4/2/94"; 378b76e1d7SPhilippe Charnier #endif 388b76e1d7SPhilippe Charnier static const char rcsid[] = 3997d92980SPeter Wemm "$FreeBSD$"; 40dea673e9SRodney W. Grimes #endif /* not lint */ 41dea673e9SRodney W. Grimes 42dea673e9SRodney W. Grimes /* 43dea673e9SRodney W. Grimes * This module is used to "verify" password entries by chpass(1) and 44dea673e9SRodney W. Grimes * pwd_mkdb(8). 45dea673e9SRodney W. Grimes */ 46dea673e9SRodney W. Grimes 47dea673e9SRodney W. Grimes #include <sys/param.h> 48dea673e9SRodney W. Grimes 49dea673e9SRodney W. Grimes #include <err.h> 50dea673e9SRodney W. Grimes #include <fcntl.h> 51dea673e9SRodney W. Grimes #include <pwd.h> 52dea673e9SRodney W. Grimes #include <stdio.h> 53dea673e9SRodney W. Grimes #include <string.h> 54dea673e9SRodney W. Grimes #include <stdlib.h> 55dea673e9SRodney W. Grimes #include <unistd.h> 56dea673e9SRodney W. Grimes 57dea673e9SRodney W. Grimes #include "pw_scan.h" 58dea673e9SRodney W. Grimes 59dea673e9SRodney W. Grimes int 60dea673e9SRodney W. Grimes pw_scan(bp, pw) 61dea673e9SRodney W. Grimes char *bp; 62dea673e9SRodney W. Grimes struct passwd *pw; 63dea673e9SRodney W. Grimes { 64dea673e9SRodney W. Grimes long id; 65dea673e9SRodney W. Grimes int root; 66dea673e9SRodney W. Grimes char *p, *sh; 67dea673e9SRodney W. Grimes 6828ca3091SGarrett Wollman pw->pw_fields = 0; 69dea673e9SRodney W. Grimes if (!(pw->pw_name = strsep(&bp, ":"))) /* login */ 70dea673e9SRodney W. Grimes goto fmt; 71dea673e9SRodney W. Grimes root = !strcmp(pw->pw_name, "root"); 7228ca3091SGarrett Wollman if(pw->pw_name[0] && (pw->pw_name[0] != '+' || pw->pw_name[1] == '\0')) 7328ca3091SGarrett Wollman pw->pw_fields |= _PWF_NAME; 74dea673e9SRodney W. Grimes 75dea673e9SRodney W. Grimes if (!(pw->pw_passwd = strsep(&bp, ":"))) /* passwd */ 76dea673e9SRodney W. Grimes goto fmt; 7728ca3091SGarrett Wollman if(pw->pw_passwd[0]) pw->pw_fields |= _PWF_PASSWD; 78dea673e9SRodney W. Grimes 79dea673e9SRodney W. Grimes if (!(p = strsep(&bp, ":"))) /* uid */ 80dea673e9SRodney W. Grimes goto fmt; 81aa510d67SEivind Eklund if (p[0]) 82aa510d67SEivind Eklund pw->pw_fields |= _PWF_UID; 83aa510d67SEivind Eklund else { 84aa510d67SEivind Eklund warnx("no uid for user %s", pw->pw_name); 85aa510d67SEivind Eklund return (0); 86aa510d67SEivind Eklund } 87dea673e9SRodney W. Grimes id = atol(p); 88dea673e9SRodney W. Grimes if (root && id) { 89dea673e9SRodney W. Grimes warnx("root uid should be 0"); 90dea673e9SRodney W. Grimes return (0); 91dea673e9SRodney W. Grimes } 9233d37c13SSheldon Hearn if (id > USHRT_MAX) { 9333d37c13SSheldon Hearn warnx("%s > max uid value (%d)", p, USHRT_MAX); 9433d37c13SSheldon Hearn /*return (0);*/ /* THIS SHOULD NOT BE FATAL! */ 95dea673e9SRodney W. Grimes } 96dea673e9SRodney W. Grimes pw->pw_uid = id; 97dea673e9SRodney W. Grimes 98dea673e9SRodney W. Grimes if (!(p = strsep(&bp, ":"))) /* gid */ 99dea673e9SRodney W. Grimes goto fmt; 10028ca3091SGarrett Wollman if(p[0]) pw->pw_fields |= _PWF_GID; 101dea673e9SRodney W. Grimes id = atol(p); 10233d37c13SSheldon Hearn if (id > USHRT_MAX) { 10333d37c13SSheldon Hearn warnx("%s > max gid value (%d)", p, USHRT_MAX); 10433d37c13SSheldon Hearn /* return (0); This should not be fatal! */ 105dea673e9SRodney W. Grimes } 106dea673e9SRodney W. Grimes pw->pw_gid = id; 107dea673e9SRodney W. Grimes 108dea673e9SRodney W. Grimes pw->pw_class = strsep(&bp, ":"); /* class */ 10928ca3091SGarrett Wollman if(pw->pw_class[0]) pw->pw_fields |= _PWF_CLASS; 11028ca3091SGarrett Wollman 111dea673e9SRodney W. Grimes if (!(p = strsep(&bp, ":"))) /* change */ 112dea673e9SRodney W. Grimes goto fmt; 11328ca3091SGarrett Wollman if(p[0]) pw->pw_fields |= _PWF_CHANGE; 114dea673e9SRodney W. Grimes pw->pw_change = atol(p); 11528ca3091SGarrett Wollman 116dea673e9SRodney W. Grimes if (!(p = strsep(&bp, ":"))) /* expire */ 117dea673e9SRodney W. Grimes goto fmt; 11828ca3091SGarrett Wollman if(p[0]) pw->pw_fields |= _PWF_EXPIRE; 119dea673e9SRodney W. Grimes pw->pw_expire = atol(p); 12028ca3091SGarrett Wollman 121cc6f6281SDavid Greenman if (!(pw->pw_gecos = strsep(&bp, ":"))) /* gecos */ 122cc6f6281SDavid Greenman goto fmt; 12328ca3091SGarrett Wollman if(pw->pw_gecos[0]) pw->pw_fields |= _PWF_GECOS; 12428ca3091SGarrett Wollman 125cc6f6281SDavid Greenman if (!(pw->pw_dir = strsep(&bp, ":"))) /* directory */ 126cc6f6281SDavid Greenman goto fmt; 12728ca3091SGarrett Wollman if(pw->pw_dir[0]) pw->pw_fields |= _PWF_DIR; 12828ca3091SGarrett Wollman 129dea673e9SRodney W. Grimes if (!(pw->pw_shell = strsep(&bp, ":"))) /* shell */ 130dea673e9SRodney W. Grimes goto fmt; 131dea673e9SRodney W. Grimes 132dea673e9SRodney W. Grimes p = pw->pw_shell; 133dea673e9SRodney W. Grimes if (root && *p) /* empty == /bin/sh */ 134dea673e9SRodney W. Grimes for (setusershell();;) { 135dea673e9SRodney W. Grimes if (!(sh = getusershell())) { 136dea673e9SRodney W. Grimes warnx("warning, unknown root shell"); 137dea673e9SRodney W. Grimes break; 138dea673e9SRodney W. Grimes } 139dea673e9SRodney W. Grimes if (!strcmp(p, sh)) 140dea673e9SRodney W. Grimes break; 141dea673e9SRodney W. Grimes } 14228ca3091SGarrett Wollman if(p[0]) pw->pw_fields |= _PWF_SHELL; 143dea673e9SRodney W. Grimes 1448b76e1d7SPhilippe Charnier if ((p = strsep(&bp, ":"))) { /* too many */ 145dea673e9SRodney W. Grimes fmt: warnx("corrupted entry"); 146dea673e9SRodney W. Grimes return (0); 147dea673e9SRodney W. Grimes } 148dea673e9SRodney W. Grimes return (1); 149dea673e9SRodney W. Grimes } 150