libnisdb/yptol/yptol_utils.c

	yptol_utils.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * DESCRIPTION: Contains helper functions for N2L
 */

/*
 * Includes. WE WANT TO USE REAL DBM FUNCTIONS SO DO NOT INCLUDE SHIM_HOOKS.H.
 */
#include <unistd.h>
#include <syslog.h>
#include <ndbm.h>
#include <sys/systeminfo.h>
#include <errno.h>
#include <strings.h>
#include "ypsym.h"
#include "ypdefs.h"
#include "shim.h"
#include "yptol.h"
#include "stdio.h"
#include "../ldap_util.h"

/* Enable standard YP code features defined in ypdefs.h */
USE_YP_PREFIX
USE_YP_MASTER_NAME
USE_YP_LAST_MODIFIED
USE_YP_INPUT_FILE
USE_YP_OUTPUT_NAME
USE_YP_DOMAIN_NAME
USE_YP_SECURE
USE_YP_INTERDOMAIN
USE_DBM

/*
 * FUNCTION :   alloc_temp_names()
 *
 * DESCRIPTION: Creates the set of temporary names for update files. It is
 *      the caller responsibility to free these.
 *
 * GIVEN :  Name of map (fully qualified)
 *
 * RETURNS :    SUCCESS with all names allocated.
 *      FAILURE with no names allocated.
 */
suc_code
alloc_temp_names(char *name, char **temp_entries, char **temp_ttl)
{
    char *myself = "alloc_temp_names";

    *temp_entries = (char *)am(myself, strlen(name) +
                        strlen(TEMP_POSTFIX) + 1);
    if (NULL == *temp_entries) {
        return (FAILURE);
    }

    *temp_ttl = (char *)am(myself, strlen(TEMP_POSTFIX) + strlen(name) +
                        strlen(TTL_POSTFIX) + 1);
    if (NULL == *temp_ttl) {
        sfree(*temp_entries);
        return (FAILURE);
    }

    strcpy(*temp_entries, name);
    strcat(*temp_entries, TEMP_POSTFIX);

    strcpy(*temp_ttl, name);
    strcat(*temp_ttl, TTL_POSTFIX);
    strcat(*temp_ttl, TEMP_POSTFIX);

    return (SUCCESS);
}

/*
 * FUNCTION :   addpair()
 *
 * DESCRIPTION: Adds a single string entry to a dbm database. This is a copy of
 *      a function from makedbm but is useful enough to be put into
 *      shared code.
 *
 * GIVEN:   Database handle
 *      Key
 *      Value
 *
 * RETURNS :    SUCCESS = Value written
 *      FAILURE = Value not written.
 */
suc_code
addpair(DBM *fdb, char *str1, char *str2)
{
    datum key;
    datum content;

    key.dptr = str1;
    key.dsize = strlen(str1);
    content.dptr  = str2;
    content.dsize = strlen(str2);
    errno = 0;
    if (dbm_store(fdb, key, content, DBM_REPLACE) != 0) {
        logmsg(MSG_NOTIMECHECK, LOG_ERR, "Problem storing %.*s %.*s "
                    "(errno=%d)",
                    key.dptr, content.dptr, errno);
        return (FAILURE);
    }
    return (SUCCESS);
}

/*
 * FUNCTION :   dump_datum()
 *
 * DESCRIPTION: Prints out a datum as a text string with no line feed.
 */
void
dump_datum(datum *dat)
{
    int i;

    if (NULL == dat) {
        printf("NULL datum");
        return;
    }

    if (NULL == dat->dptr) {
        printf("NULL dptr");
        return;
    }
    for (i = 0; i < dat->dsize; i++)
        putchar(dat->dptr[i]);
}

/*
 * FUNCTION :   update_timestamp()
 *
 * DESCRIPTION: Adds, or updates, a maps last modified timestamp.
 *
 * GIVEN :  Pointer to an open DBM file.
 *
 * RETURNS :    SUCCESS = Entry created
 *      FAILURE = Entry not created
 */
suc_code
update_timestamp(DBM *db)
{
    char time_string[MAX_ASCII_ORDER_NUMBER_LENGTH];
    struct timeval  now;

    if (0 != gettimeofday(&now, NULL)) {
        logmsg(MSG_NOTIMECHECK, LOG_ERR, "Could not get time of day");
        return (FAILURE);
    }
    sprintf(time_string, "%010ld", (long)now.tv_sec);
    if (SUCCESS != addpair(db, yp_last_modified, time_string))
        return (FAILURE);

    return (SUCCESS);
}