/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2017 Peter Tribble.
 */

/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */


#include <stdio.h>
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <pkglocs.h>
#include <locale.h>
#include <libintl.h>
#include <pkglib.h>
#include <install.h>
#include <libinst.h>
#include <libadm.h>
#include <messages.h>

#define	DEFMAIL	"root"

extern struct admin	adm;		/* holds info about install admin */
extern int		warnflag;	/* != 0 non-fatal error occurred 2 */

static struct {
	char	**memloc;
	char	*tag;
} admlist[] = {
	&adm.action,		"action",
	&adm.basedir,		"basedir",
	&adm.conflict,		"conflict",
	&adm.idepend,		"idepend",
	&adm.instance,		"instance",
	&adm.mail,		"mail",
	&adm.partial,		"partial",
	&adm.rdepend,		"rdepend",
	&adm.RSCRIPTALT,	RSCRIPTALT_KEYWORD,
	&adm.runlevel,		"runlevel",
	&adm.setuid,		"setuid",
	&adm.space,		"space",
	/* MUST BE LAST ENTRY IN LIST */
	(char **)NULL,		(char *)NULL
};

/*
 * Name:	setadminSetting
 * Description:	set one administration parameter setting
 * Arguments:	a_paramName - pointer to string representing the name of
 *			the administration parameter to set
 *		a_paramValue - pointer to string representing the value
 *			to set the specified administration parameter to
 * Returns:	char *
 *			- old value the parameter had before being set
 *			== NULL - the old paramter was not set
 */

char *
setadminSetting(char *a_paramName, char *a_paramValue)
{
	char	*oldValue = (char *)NULL;
	int	i;

	/* locate and update the specified admin setting */

	for (i = 0; admlist[i].memloc; i++) {
		if (strcmp(a_paramName, admlist[i].tag) == 0) {
			oldValue = *admlist[i].memloc;
			*admlist[i].memloc = a_paramValue;
			break;
		}
	}

	if (admlist[i].memloc == (char **)NULL) {
		logerr(WRN_UNKNOWN_ADM_PARAM, a_paramName);
	}

	return (oldValue);
}

/*
 * Name:	setadminFile
 * Description:	read and remember settings from administration file
 * Arguments:	file - pointer to string representing the path to the
 *			administration file to read - if this is NULL
 *			then the name "default" is used - if this is
 *			the string "none" then the admin "basedir"
 *			setting is set to "ask" so that the location
 *			of the administration file will be interactively
 *			asked at the appropriate time
 * Returns:	void
 */

void
setadminFile(char *file)
{
	FILE	*fp;
	int	i;
	char	param[MAX_PKG_PARAM_LENGTH];
	char	*value;
	char	path[PATH_MAX];
	int	mail = 0;

	if (file == NULL)
		file = "default";
	else if (strcmp(file, "none") == 0) {
		adm.basedir = "ask";
		return;
	}

	if (file[0] == '/')
		(void) strcpy(path, file);
	else {
		(void) snprintf(path, sizeof (path), "%s/admin/%s",
				get_PKGADM(), file);
		if (access(path, R_OK)) {
			(void) snprintf(path, sizeof (path), "%s/admin/%s",
				PKGADM, file);
		}
	}

	if ((fp = fopen(path, "r")) == NULL) {
		progerr(ERR_OPEN_ADMIN_FILE, file, strerror(errno));
		quit(99);
	}

	param[0] = '\0';
	while (value = fpkgparam(fp, param)) {
		if (strcmp(param, "mail") == 0) {
			mail = 1;
		}
		if (value[0] == '\0') {
			param[0] = '\0';
			continue; /* same as not being set at all */
		}
		for (i = 0; admlist[i].memloc; i++) {
			if (strcmp(param, admlist[i].tag) == 0) {
				*admlist[i].memloc = value;
				break;
			}
		}
		if (admlist[i].memloc == NULL) {
			logerr(WRN_UNKNOWN_ADM_PARAM, param);
			free(value);
		}
		param[0] = '\0';
	}

	(void) fclose(fp);

	if (!mail) {
		adm.mail = DEFMAIL; 	/* if we don't assign anything to it */
	}
}