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236 lines
5.5 KiB
C
236 lines
5.5 KiB
C
/*
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* Copyright (c) 1988 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* This is an old implementation and needs to be replaced; just not quite
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* yet -- gdr
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*
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* $Id: getpwent.c,v 1.2 1997/09/21 06:05:00 gdr Exp $
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*
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* This file is formatted with tab stops every 8 characters.
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*/
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#ifdef __ORCAC__
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segment "libc_gen__";
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#endif
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#define _PATH_PASSWD "/etc/passwd"
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)getpwent.c 5.21 (Berkeley) 3/14/91";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <err.h>
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#define LENGTH 128
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#define _PATH_PASSWD "/etc/passwd"
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static struct passwd _pw_passwd; /* password structure */
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static char pwline[LENGTH]; /* line in /etc/passwd */
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static FILE * f_passwd = NULL;
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#if 0
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static int _pw_stayopen = 0; /* keep fd's open */
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#endif
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static FILE *
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_getpwfp (void) {
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if (f_passwd == NULL) {
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f_passwd = fopen(_PATH_PASSWD, "r");
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if (f_passwd == NULL) {
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/* this should really be going out via syslog */
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errx(1, "couldn't open %s", _PATH_PASSWD);
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}
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}
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return f_passwd;
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}
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static struct passwd *
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_parsepw (struct passwd *_pw, char *line)
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{
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char *q, *r;
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_pw->pw_fields = 0L; /* no fields filled in yet */
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if ((q = strchr(line, '\n')) != NULL) {
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*q = '\0';
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}
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/* user name */
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_pw->pw_name = line;
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if ((q = strchr(line,':')) == NULL) {
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return NULL;
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}
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*q++ = '\0';
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_pw->pw_fields |= _PWF_NAME;
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/* password */
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_pw->pw_passwd = q;
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if ((q = strchr(q,':')) == NULL) {
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return NULL;
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}
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*q++ = '\0';
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_pw->pw_fields |= _PWF_PASSWD;
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/* user id */
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errno = 0;
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_pw->pw_uid = (int) strtol(q, &r, 10);
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if (errno == ERANGE || q == r) {
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return NULL;
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}
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q = r;
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*q++ = '\0';
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_pw->pw_fields |= _PWF_UID;
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/* group id */
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errno = 0;
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_pw->pw_gid = (int) strtol(q, &r, 10);
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if (errno == ERANGE || q == r) {
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return NULL;
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}
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q = r;
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*q++ = '\0';
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_pw->pw_fields |= _PWF_GID;
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/* real name */
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_pw->pw_gecos = q;
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if ((q = strchr(q,':')) == NULL) {
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return NULL;
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}
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*q++ = '\0';
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_pw->pw_fields |= _PWF_GECOS;
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/* home directory */
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_pw->pw_dir = q;
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if ((q = strchr(q,':')) == NULL) {
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return NULL;
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}
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*q++ = '\0';
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_pw->pw_fields |= _PWF_DIR;
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/* shell -- last one, so handle it differently */
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_pw->pw_shell = q;
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if ((q = strchr(q,':')) != NULL) {
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*q = '\0';
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}
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_pw->pw_fields |= _PWF_SHELL;
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/* "not filled in":
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* password change time
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* user access class
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* account expiry time
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*/
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_pw->pw_change = _pw->pw_expire = 0L;
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_pw->pw_class = NULL;
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return _pw;
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}
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struct passwd *
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getpwent(void)
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{
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FILE *fp;
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fp = _getpwfp();
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if (fgets(pwline, LENGTH, fp) == NULL) {
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return NULL;
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}
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return _parsepw (&_pw_passwd, pwline);
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}
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struct passwd *
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getpwnam(char *name) {
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FILE *fp;
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struct passwd *result;
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fp = _getpwfp();
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rewind(fp);
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while (fgets(pwline, LENGTH, fp) != NULL) {
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result = _parsepw (&_pw_passwd, pwline);
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if (result == NULL || !strcmp(name, result->pw_name)) {
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return result;
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}
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}
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return NULL;
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}
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struct passwd *
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getpwuid(uid_t uid)
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{
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FILE *fp;
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struct passwd *result;
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fp = _getpwfp();
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rewind(fp);
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while (fgets(pwline, LENGTH, fp) != NULL) {
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result = _parsepw (&_pw_passwd, pwline);
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if (result == NULL || uid == result->pw_uid) {
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return result;
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}
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}
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return NULL;
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}
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int
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setpwent(void)
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{
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if (f_passwd != NULL) {
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rewind(f_passwd);
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}
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return 1;
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}
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void
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endpwent(void)
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{
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if (f_passwd != NULL) {
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fclose(f_passwd);
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f_passwd = NULL;
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}
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}
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#ifdef NOTDEFINED
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int
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setpassent(stayopen)
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int stayopen;
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{
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_pw_keynum = 0;
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_pw_stayopen = stayopen;
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return(1);
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}
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#endif
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