cr_carrier.c

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/*
 * $Id$
 *
 * Copyright (C) 2007-2008 1&1 Internet AG
 *
 * This file is part of SIP-router, a free SIP server.
 *
 * SIP-router 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
 *
 * SIP-router 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <stdlib.h>
#include "../../mem/shm_mem.h"
#include "../../ut.h"
#include "cr_carrier.h"
#include "cr_domain.h"
#include "cr_map.h"


struct carrier_data_t * create_carrier_data(int carrier_id, str *carrier_name, int domains) {
        struct carrier_data_t * tmp;
        if ((tmp = shm_malloc(sizeof(struct carrier_data_t))) == NULL) {
                SHM_MEM_ERROR;
                return NULL;
        }
        memset(tmp, 0, sizeof(struct carrier_data_t));
        tmp->id = carrier_id;
        tmp->name = carrier_name;
        tmp->domain_num = domains;
        if(domains > 0){
                if ((tmp->domains = shm_malloc(sizeof(struct domain_data_t *) * domains)) == NULL) {
                        SHM_MEM_ERROR;
                        shm_free(tmp);
                        return NULL;
                }
                memset(tmp->domains, 0, sizeof(struct domain_data_t *) * domains);
        }
        return tmp;
}


void destroy_carrier_data(struct carrier_data_t *carrier_data) {
        int i;
        if (carrier_data) {
                if (carrier_data->domains != NULL) {
                        for (i=0; i<carrier_data->domain_num; i++) {
                                destroy_domain_data(carrier_data->domains[i]);
                        }
                        shm_free(carrier_data->domains);
                }
                shm_free(carrier_data);
        }
}


int add_domain_data(struct carrier_data_t * carrier_data, struct domain_data_t * domain_data, int index) {
        LM_INFO("adding domain %d '%.*s' to carrier %d '%.*s'", domain_data->id, domain_data->name->len, domain_data->name->s, carrier_data->id, carrier_data->name->len, carrier_data->name->s);
        LM_DBG("domain position %d (domain_num=%d, first_empty_domain=%d)", index, (int) carrier_data->domain_num, (int) carrier_data->first_empty_domain);

        if ((index < 0) || (index > carrier_data->first_empty_domain)) {
                LM_ERR("got invalid index during binary search\n");
                return -1;
        }
                
        if (carrier_data->first_empty_domain >= carrier_data->domain_num) {
                LM_ERR("cannot add new domain '%.*s' into carrier '%.*s' - array already full\n", domain_data->name->len, domain_data->name->s, carrier_data->name->len, carrier_data->name->s);
                return -1;
        }

        if (index < carrier_data->first_empty_domain) {
                /* move other entries one position up */
                memmove(&carrier_data->domains[index+1], &carrier_data->domains[index], sizeof(struct domain_data_t *)*(carrier_data->first_empty_domain-index));
        }
        carrier_data->domains[index] = domain_data;
        carrier_data->first_empty_domain++;

        return 0;
}


struct domain_data_t * get_domain_data(struct carrier_data_t * carrier_data, int domain_id) {
        struct domain_data_t **ret;
        struct domain_data_t key;
        struct domain_data_t *pkey = &key;

        if (!carrier_data) {
                LM_ERR("NULL pointer in parameter\n");
                return NULL;
        }
        key.id = domain_id;
        ret = bsearch(&pkey, carrier_data->domains, carrier_data->domain_num, sizeof(carrier_data->domains[0]), compare_domain_data);
        if (ret) return *ret;
        return NULL;
}


int compare_carrier_data(const void *v1, const void *v2) {
  struct carrier_data_t *c1 = *(struct carrier_data_t * const *)v1;
        struct carrier_data_t *c2 = *(struct carrier_data_t * const *)v2;
        if (c1 == NULL) {
                if (c2 == NULL) return 0;
                else return 1;
        }
        else {
                if (c2 == NULL) return -1;
                else {
                        if (c1->id < c2->id) return -1;
                        else if (c1->id > c2->id) return 1;
                        else return 0;
                }
        }
}