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- /*-
- * Copyright (c) 1990 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_scan.c 5.1 (Berkeley) 2/12/91";
- #endif /* not lint */
-
- /*
- * This module is used to "verify" password entries by chpass(1) and
- * pwd_mkdb(8).
- */
-
- #include <sys/param.h>
- #include <fcntl.h>
- #include <pwd.h>
- #include <errno.h>
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
-
- extern char *progname;
-
- pw_scan(bp, pw)
- char *bp;
- struct passwd *pw;
- {
- register long id;
- register int root;
- register char *p, *sh;
- char *getusershell();
-
- if (!(pw->pw_name = strsep(&bp, ":"))) /* login */
- goto fmt;
- root = !strcmp(pw->pw_name, "root");
-
- if (!(pw->pw_passwd = strsep(&bp, ":"))) /* passwd */
- goto fmt;
-
- if (!(p = strsep(&bp, ":"))) /* uid */
- goto fmt;
- id = atol(p);
- if (root && id) {
- (void)fprintf(stderr, "%s: root uid should be 0", progname);
- return(0);
- }
- if (id > USHRT_MAX) {
- (void)fprintf(stderr,
- "%s: %s > max uid value (%d)", progname, p, USHRT_MAX);
- return(0);
- }
- pw->pw_uid = id;
-
- if (!(p = strsep(&bp, ":"))) /* gid */
- goto fmt;
- id = atol(p);
- if (id > USHRT_MAX) {
- (void)fprintf(stderr,
- "%s: %s > max gid value (%d)", progname, p, USHRT_MAX);
- return(0);
- }
- pw->pw_gid = id;
-
- pw->pw_class = strsep(&bp, ":"); /* class */
- if (!(p = strsep(&bp, ":"))) /* change */
- goto fmt;
- pw->pw_change = atol(p);
- if (!(p = strsep(&bp, ":"))) /* expire */
- goto fmt;
- pw->pw_expire = atol(p);
- pw->pw_gecos = strsep(&bp, ":"); /* gecos */
- pw->pw_dir = strsep(&bp, ":"); /* directory */
- if (!(pw->pw_shell = strsep(&bp, ":"))) /* shell */
- goto fmt;
-
- p = pw->pw_shell;
- if (root && *p) /* empty == /bin/sh */
- for (setusershell();;) {
- if (!(sh = getusershell())) {
- (void)fprintf(stderr,
- "%s: warning, unknown root shell\n",
- progname);
- break;
- }
- if (!strcmp(p, sh))
- break;
- }
-
- if (p = strsep(&bp, ":")) { /* too many */
- fmt: (void)fprintf(stderr, "%s: corrupted entry\n", progname);
- return(0);
- }
- return(1);
- }
-