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/*
* Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <glib.h>
#include "iotcon-types.h"
#include "ic-utils.h"
#include "icl.h"
#include "icl-resource.h"
#include "icl-resource-types.h"
#include "icl-query.h"
API int iotcon_query_create(iotcon_query_h *ret_query)
{
iotcon_query_h query;
RETV_IF(false == ic_utils_check_oic_feature_supported(), IOTCON_ERROR_NOT_SUPPORTED);
RETV_IF(NULL == ret_query, IOTCON_ERROR_INVALID_PARAMETER);
query = calloc(1, sizeof(struct icl_query));
if (NULL == query) {
ERR("calloc() Fail(%d)", errno);
return IOTCON_ERROR_OUT_OF_MEMORY;
}
query->hash = g_hash_table_new_full(g_str_hash, g_str_equal, free, free);
*ret_query = query;
return IOTCON_ERROR_NONE;
}
API void iotcon_query_destroy(iotcon_query_h query)
{
RET_IF(NULL == query);
g_hash_table_unref(query->hash);
free(query);
}
API int iotcon_query_get_resource_type(iotcon_query_h query,
char **resource_type)
{
char *type;
RETV_IF(false == ic_utils_check_oic_feature_supported(), IOTCON_ERROR_NOT_SUPPORTED);
RETV_IF(NULL == query, IOTCON_ERROR_INVALID_PARAMETER);
RETV_IF(NULL == resource_type, IOTCON_ERROR_INVALID_PARAMETER);
iotcon_query_lookup(query, ICL_QUERY_KEY_RESOURCE_TYPE, &type);
if (NULL == type) {
ERR("resource_type is NULL");
return IOTCON_ERROR_NO_DATA;
}
*resource_type = type;
return IOTCON_ERROR_NONE;
}
API int iotcon_query_get_interface(iotcon_query_h query, char **resource_iface)
{
char *iface = NULL;
RETV_IF(false == ic_utils_check_oic_feature_supported(), IOTCON_ERROR_NOT_SUPPORTED);
RETV_IF(NULL == query, IOTCON_ERROR_INVALID_PARAMETER);
RETV_IF(NULL == resource_iface, IOTCON_ERROR_INVALID_PARAMETER);
iotcon_query_lookup(query, ICL_QUERY_KEY_INTERFACE, &iface);
if (NULL == iface) {
ERR("iface is NULL");
return IOTCON_ERROR_NO_DATA;
}
*resource_iface = iface;
return IOTCON_ERROR_NONE;
}
API int iotcon_query_set_resource_type(iotcon_query_h query,
const char *resource_type)
{
int length_old = 0;
int length_new = 0;
char *value = NULL;
RETV_IF(false == ic_utils_check_oic_feature_supported(), IOTCON_ERROR_NOT_SUPPORTED);
RETV_IF(NULL == query, IOTCON_ERROR_INVALID_PARAMETER);
RETV_IF(resource_type && (false == icl_resource_check_type(resource_type)),
IOTCON_ERROR_INVALID_PARAMETER);
value = g_hash_table_lookup(query->hash, ICL_QUERY_KEY_RESOURCE_TYPE);
if (value)
length_old = (sizeof(ICL_QUERY_KEY_RESOURCE_TYPE) - 1) + strlen(value) + 2;
if (resource_type)
length_new = (sizeof(ICL_QUERY_KEY_RESOURCE_TYPE) - 1) + strlen(resource_type) + 2;
if (ICL_QUERY_LENGTH_MAX < query->len - length_old + length_new) {
ERR("Length of query is invalid.");
return IOTCON_ERROR_OUT_OF_MEMORY;
}
if (value)
iotcon_query_remove(query, ICL_QUERY_KEY_RESOURCE_TYPE);
if (resource_type)
iotcon_query_add(query, ICL_QUERY_KEY_RESOURCE_TYPE, resource_type);
return IOTCON_ERROR_NONE;
}
API int iotcon_query_set_interface(iotcon_query_h query, const char *resource_iface)
{
int length_old = 0;
int length_new = 0;
char *value = NULL;
RETV_IF(false == ic_utils_check_oic_feature_supported(), IOTCON_ERROR_NOT_SUPPORTED);
RETV_IF(NULL == query, IOTCON_ERROR_INVALID_PARAMETER);
RETV_IF(resource_iface && (false == icl_resource_check_interface(resource_iface)),
IOTCON_ERROR_INVALID_PARAMETER);
value = g_hash_table_lookup(query->hash, ICL_QUERY_KEY_INTERFACE);
if (value)
length_old = (sizeof(ICL_QUERY_KEY_INTERFACE) - 1) + strlen(value) + 2;
if (resource_iface)
length_new = (sizeof(ICL_QUERY_KEY_INTERFACE) - 1) + strlen(resource_iface) + 2;
if (ICL_QUERY_LENGTH_MAX < query->len - length_old + length_new) {
ERR("Length of query is invalid.");
return IOTCON_ERROR_OUT_OF_MEMORY;
}
if (value)
iotcon_query_remove(query, ICL_QUERY_KEY_INTERFACE);
iotcon_query_add(query, ICL_QUERY_KEY_INTERFACE, resource_iface);
return IOTCON_ERROR_NONE;
}
/* The full length of query should be less than or equal to 64. */
API int iotcon_query_add(iotcon_query_h query, const char *key, const char *value)
{
int query_len;
RETV_IF(false == ic_utils_check_oic_feature_supported(), IOTCON_ERROR_NOT_SUPPORTED);
RETV_IF(NULL == query, IOTCON_ERROR_INVALID_PARAMETER);
RETV_IF(NULL == key, IOTCON_ERROR_INVALID_PARAMETER);
RETV_IF(NULL == value, IOTCON_ERROR_INVALID_PARAMETER);
/* first query : ?key=value
* Rest of query : ;key=value */
query_len = strlen(key) + strlen(value) + 2;
if (ICL_QUERY_LENGTH_MAX < (query->len + query_len)) {
ERR("Length of query is invalid.");
return IOTCON_ERROR_OUT_OF_MEMORY;
}
g_hash_table_insert(query->hash, ic_utils_strdup(key), ic_utils_strdup(value));
query->len += query_len;
return IOTCON_ERROR_NONE;
}
API int iotcon_query_remove(iotcon_query_h query, const char *key)
{
gboolean is_removed;
int query_len;
char *value;
RETV_IF(false == ic_utils_check_oic_feature_supported(), IOTCON_ERROR_NOT_SUPPORTED);
RETV_IF(NULL == query, IOTCON_ERROR_INVALID_PARAMETER);
RETV_IF(NULL == key, IOTCON_ERROR_INVALID_PARAMETER);
value = g_hash_table_lookup(query->hash, key);
if (NULL == value) {
ERR("g_hash_table_lookup() Fail");
return IOTCON_ERROR_INVALID_PARAMETER;
}
query_len = strlen(key) + strlen(value) + 2;
is_removed = g_hash_table_remove(query->hash, key);
if (FALSE == is_removed) {
ERR("g_hash_table_remove() Fail");
return IOTCON_ERROR_INVALID_PARAMETER;
}
query->len -= query_len;
return IOTCON_ERROR_NONE;
}
API int iotcon_query_lookup(iotcon_query_h query, const char *key, char **data)
{
char *value = NULL;
RETV_IF(false == ic_utils_check_oic_feature_supported(), IOTCON_ERROR_NOT_SUPPORTED);
RETV_IF(NULL == query, IOTCON_ERROR_INVALID_PARAMETER);
RETV_IF(NULL == key, IOTCON_ERROR_INVALID_PARAMETER);
RETV_IF(NULL == data, IOTCON_ERROR_INVALID_PARAMETER);
value = g_hash_table_lookup(query->hash, key);
if (NULL == value) {
ERR("g_hash_table_lookup() Fail");
return IOTCON_ERROR_INVALID_PARAMETER;
}
*data = value;
return IOTCON_ERROR_NONE;
}
API int iotcon_query_foreach(iotcon_query_h query, iotcon_query_foreach_cb cb,
void *user_data)
{
GHashTableIter iter;
gpointer key, value;
RETV_IF(false == ic_utils_check_oic_feature_supported(), IOTCON_ERROR_NOT_SUPPORTED);
RETV_IF(NULL == query, IOTCON_ERROR_INVALID_PARAMETER);
RETV_IF(NULL == cb, IOTCON_ERROR_INVALID_PARAMETER);
g_hash_table_iter_init(&iter, query->hash);
while (g_hash_table_iter_next(&iter, &key, &value)) {
if (IOTCON_FUNC_STOP == cb(key, value, user_data))
break;
}
return IOTCON_ERROR_NONE;
}
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