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config.c

/*
 *   LASH
 *    
 *   Copyright (C) 2002 Robert Ham <rah@bash.sh>
 *    
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <netinet/in.h>
#include <stdio.h>

#include <lash/config.h>
#include <lash/xmalloc.h>
#include <lash/internal.h>

void
lash_config_init(lash_config_t * config)
{
      config->key = NULL;
      config->value = NULL;
      config->value_size = 0;
}

lash_config_t *
lash_config_new()
{
      lash_config_t *config;

      config = lash_malloc(sizeof(lash_config_t));
      lash_config_init(config);

      return config;
}

lash_config_t *
lash_config_dup(const lash_config_t * config)
{
      lash_config_t *config_dup;

      config_dup = lash_config_new();
      lash_config_set_key(config_dup, lash_config_get_key(config));
      lash_config_set_value(config_dup, lash_config_get_value(config),
                                      lash_config_get_value_size(config));

      return config_dup;
}

lash_config_t *
lash_config_new_with_key(const char *key)
{
      lash_config_t *config;

      config = lash_config_new();
      lash_config_set_key(config, key);
      return config;
}

void
lash_config_free(lash_config_t * config)
{
      if (config->key) {
            free(config->key);
            config->key = NULL;
      }

      if (config->value) {
            free(config->value);
            config->value = NULL;
      }

      config->value_size = 0;
}

void
lash_config_destroy(lash_config_t * config)
{
      lash_config_free(config);
      free(config);
}

const char *
lash_config_get_key(const lash_config_t * config)
{
      return config->key;
}

const void *
lash_config_get_value(const lash_config_t * config)
{
      return config->value;
}

size_t
lash_config_get_value_size(const lash_config_t * config)
{
      return config->value_size;
}

uint32_t
lash_config_get_value_int(const lash_config_t * config)
{
      const uint32_t *value;

      value = (const uint32_t *)lash_config_get_value(config);

      return ntohl(*value);
}

float
lash_config_get_value_float(const lash_config_t * config)
{
      const float *value;

      value = (const float *)lash_config_get_value(config);

      return *value;
}

double
lash_config_get_value_double(const lash_config_t * config)
{
      const double *value;

      value = (const double *)lash_config_get_value(config);

      return *value;
}

const char *
lash_config_get_value_string(const lash_config_t * config)
{
      return (const char *)lash_config_get_value(config);
}

void
lash_config_set_key(lash_config_t * config, const char *key)
{
      /* free the existing key */
      if (config->key)
            free(config->key);

      /* copy the new one */
      config->key = lash_strdup(key);
}

void
lash_config_set_value(lash_config_t * config, const void *value,
                                size_t value_size)
{
      /* check whether the value size will survive the network */
      if (ntohl(htonl(value_size)) != value_size) {
            fprintf(stderr,
                        "%s: value_size is too big and will not survive the network!\n",
                        __FUNCTION__);
      }

      /* free the existing value */
      if (config->value)
            free(config->value);

      if (value) {
            config->value = lash_malloc(value_size);
            memcpy(config->value, value, value_size);

            config->value_size = value_size;
      } else {
            config->value = NULL;
            config->value_size = (size_t) 0;
      }
}

void
lash_config_set_value_int(lash_config_t * config, uint32_t value)
{
      uint32_t nvalue;

      nvalue = htonl(value);

      lash_config_set_value(config, &nvalue, sizeof(uint32_t));
}

void
lash_config_set_value_float(lash_config_t * config, float value)
{
      lash_config_set_value(config, &value, sizeof(float));
}

void
lash_config_set_value_double(lash_config_t * config, double value)
{
      lash_config_set_value(config, &value, sizeof(value));
}

void
lash_config_set_value_string(lash_config_t * config, const char *value)
{
      lash_config_set_value(config, value, strlen(value) + 1);
}

/* EOF */

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