Austin Blackstone / Mbed 2 deprecated client-lwip-lightswitch-demo-expanded

mbed client lightswitch demo

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by Austin Blackstone

mbed-client/source/m2mtlvserializer.cpp@11:cada08fc8a70, 2016-06-09 (annotated)

Committer:
mbedAustin
Date:
Thu Jun 09 17:08:36 2016 +0000
Revision:
11:cada08fc8a70
Commit for public Consumption

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedAustin 11:cada08fc8a70 1 /*
mbedAustin 11:cada08fc8a70 2 * Copyright (c) 2015 ARM Limited. All rights reserved.
mbedAustin 11:cada08fc8a70 3 * SPDX-License-Identifier: Apache-2.0
mbedAustin 11:cada08fc8a70 4 * Licensed under the Apache License, Version 2.0 (the License); you may
mbedAustin 11:cada08fc8a70 5 * not use this file except in compliance with the License.
mbedAustin 11:cada08fc8a70 6 * You may obtain a copy of the License at
mbedAustin 11:cada08fc8a70 7 *
mbedAustin 11:cada08fc8a70 8 * http://www.apache.org/licenses/LICENSE-2.0
mbedAustin 11:cada08fc8a70 9 *
mbedAustin 11:cada08fc8a70 10 * Unless required by applicable law or agreed to in writing, software
mbedAustin 11:cada08fc8a70 11 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
mbedAustin 11:cada08fc8a70 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbedAustin 11:cada08fc8a70 13 * See the License for the specific language governing permissions and
mbedAustin 11:cada08fc8a70 14 * limitations under the License.
mbedAustin 11:cada08fc8a70 15 */
mbedAustin 11:cada08fc8a70 16 #include <stdio.h>
mbedAustin 11:cada08fc8a70 17 #include "include/m2mtlvserializer.h"
mbedAustin 11:cada08fc8a70 18 #include "mbed-client/m2mconstants.h"
mbedAustin 11:cada08fc8a70 19
mbedAustin 11:cada08fc8a70 20 M2MTLVSerializer::M2MTLVSerializer()
mbedAustin 11:cada08fc8a70 21 {
mbedAustin 11:cada08fc8a70 22 }
mbedAustin 11:cada08fc8a70 23
mbedAustin 11:cada08fc8a70 24 M2MTLVSerializer::~M2MTLVSerializer()
mbedAustin 11:cada08fc8a70 25 {
mbedAustin 11:cada08fc8a70 26 }
mbedAustin 11:cada08fc8a70 27
mbedAustin 11:cada08fc8a70 28 uint8_t* M2MTLVSerializer::serialize(M2MObjectInstanceList object_instance_list, uint32_t &size)
mbedAustin 11:cada08fc8a70 29 {
mbedAustin 11:cada08fc8a70 30 return serialize_object_instances(object_instance_list, size);
mbedAustin 11:cada08fc8a70 31 }
mbedAustin 11:cada08fc8a70 32
mbedAustin 11:cada08fc8a70 33 uint8_t* M2MTLVSerializer::serialize(M2MResourceList resource_list, uint32_t &size)
mbedAustin 11:cada08fc8a70 34 {
mbedAustin 11:cada08fc8a70 35 bool valid = true;
mbedAustin 11:cada08fc8a70 36 return serialize_resources(resource_list, size,valid);
mbedAustin 11:cada08fc8a70 37 }
mbedAustin 11:cada08fc8a70 38
mbedAustin 11:cada08fc8a70 39 uint8_t* M2MTLVSerializer::serialize(M2MResource *resource, uint32_t &size)
mbedAustin 11:cada08fc8a70 40 {
mbedAustin 11:cada08fc8a70 41 uint8_t* data = NULL;
mbedAustin 11:cada08fc8a70 42 serialize(resource, data, size);
mbedAustin 11:cada08fc8a70 43 return data;
mbedAustin 11:cada08fc8a70 44 }
mbedAustin 11:cada08fc8a70 45
mbedAustin 11:cada08fc8a70 46 uint8_t* M2MTLVSerializer::serialize_object_instances(M2MObjectInstanceList object_instance_list, uint32_t &size)
mbedAustin 11:cada08fc8a70 47 {
mbedAustin 11:cada08fc8a70 48 uint8_t *data = NULL;
mbedAustin 11:cada08fc8a70 49
mbedAustin 11:cada08fc8a70 50 if(!object_instance_list.empty()) {
mbedAustin 11:cada08fc8a70 51 M2MObjectInstanceList::const_iterator it;
mbedAustin 11:cada08fc8a70 52 it = object_instance_list.begin();
mbedAustin 11:cada08fc8a70 53 for (; it!=object_instance_list.end(); it++) {
mbedAustin 11:cada08fc8a70 54 uint16_t id = (*it)->instance_id();
mbedAustin 11:cada08fc8a70 55 serialize(id, *it, data, size);
mbedAustin 11:cada08fc8a70 56 }
mbedAustin 11:cada08fc8a70 57 }
mbedAustin 11:cada08fc8a70 58 return data;
mbedAustin 11:cada08fc8a70 59 }
mbedAustin 11:cada08fc8a70 60
mbedAustin 11:cada08fc8a70 61 uint8_t* M2MTLVSerializer::serialize_resources(M2MResourceList resource_list, uint32_t &size, bool &valid)
mbedAustin 11:cada08fc8a70 62 {
mbedAustin 11:cada08fc8a70 63 uint8_t *data = NULL;
mbedAustin 11:cada08fc8a70 64
mbedAustin 11:cada08fc8a70 65 if(!resource_list.empty()) {
mbedAustin 11:cada08fc8a70 66 M2MResourceList::const_iterator it;
mbedAustin 11:cada08fc8a70 67 it = resource_list.begin();
mbedAustin 11:cada08fc8a70 68 for (; it!=resource_list.end(); it++) {
mbedAustin 11:cada08fc8a70 69 if((*it)->name_id() == -1) {
mbedAustin 11:cada08fc8a70 70 valid = false;
mbedAustin 11:cada08fc8a70 71 break;
mbedAustin 11:cada08fc8a70 72 }
mbedAustin 11:cada08fc8a70 73 }
mbedAustin 11:cada08fc8a70 74 if(valid) {
mbedAustin 11:cada08fc8a70 75 it = resource_list.begin();
mbedAustin 11:cada08fc8a70 76 for (; it!=resource_list.end(); it++) {
mbedAustin 11:cada08fc8a70 77 serialize(*it, data, size);
mbedAustin 11:cada08fc8a70 78 }
mbedAustin 11:cada08fc8a70 79 }
mbedAustin 11:cada08fc8a70 80 }
mbedAustin 11:cada08fc8a70 81 return data;
mbedAustin 11:cada08fc8a70 82 }
mbedAustin 11:cada08fc8a70 83
mbedAustin 11:cada08fc8a70 84 void M2MTLVSerializer::serialize(uint16_t id, M2MObjectInstance *object_instance, uint8_t *&data, uint32_t &size)
mbedAustin 11:cada08fc8a70 85 {
mbedAustin 11:cada08fc8a70 86 uint8_t *resource_data = NULL;
mbedAustin 11:cada08fc8a70 87 uint32_t resource_size = 0;
mbedAustin 11:cada08fc8a70 88
mbedAustin 11:cada08fc8a70 89 bool valid = true;
mbedAustin 11:cada08fc8a70 90 resource_data = serialize_resources(object_instance->resources(),resource_size,valid);
mbedAustin 11:cada08fc8a70 91 if(valid) {
mbedAustin 11:cada08fc8a70 92 serialize_TILV(TYPE_OBJECT_INSTANCE, id, resource_data, resource_size, data, size);
mbedAustin 11:cada08fc8a70 93 }
mbedAustin 11:cada08fc8a70 94 free(resource_data);
mbedAustin 11:cada08fc8a70 95 }
mbedAustin 11:cada08fc8a70 96
mbedAustin 11:cada08fc8a70 97 bool M2MTLVSerializer::serialize(M2MResource *resource, uint8_t *&data, uint32_t &size)
mbedAustin 11:cada08fc8a70 98 {
mbedAustin 11:cada08fc8a70 99 bool success = false;
mbedAustin 11:cada08fc8a70 100 if(resource->name_id() != -1) {
mbedAustin 11:cada08fc8a70 101 success = resource->supports_multiple_instances() ?
mbedAustin 11:cada08fc8a70 102 serialize_multiple_resource(resource, data, size) :
mbedAustin 11:cada08fc8a70 103 serialize_resource(resource, data, size);
mbedAustin 11:cada08fc8a70 104 }
mbedAustin 11:cada08fc8a70 105 return success;
mbedAustin 11:cada08fc8a70 106 }
mbedAustin 11:cada08fc8a70 107
mbedAustin 11:cada08fc8a70 108 bool M2MTLVSerializer::serialize_resource(M2MResource *resource, uint8_t *&data, uint32_t &size)
mbedAustin 11:cada08fc8a70 109 {
mbedAustin 11:cada08fc8a70 110 bool success = false;
mbedAustin 11:cada08fc8a70 111 if(resource->name_id() != -1) {
mbedAustin 11:cada08fc8a70 112 success = true;
mbedAustin 11:cada08fc8a70 113 serialize_TILV(TYPE_RESOURCE, resource->name_id(), resource->value(), resource->value_length(), data, size);
mbedAustin 11:cada08fc8a70 114 }
mbedAustin 11:cada08fc8a70 115 return success;
mbedAustin 11:cada08fc8a70 116 }
mbedAustin 11:cada08fc8a70 117
mbedAustin 11:cada08fc8a70 118 bool M2MTLVSerializer::serialize_multiple_resource(M2MResource *resource, uint8_t *&data, uint32_t &size)
mbedAustin 11:cada08fc8a70 119 {
mbedAustin 11:cada08fc8a70 120 bool success = false;
mbedAustin 11:cada08fc8a70 121 uint8_t *nested_data = NULL;
mbedAustin 11:cada08fc8a70 122 uint32_t nested_data_size = 0;
mbedAustin 11:cada08fc8a70 123
mbedAustin 11:cada08fc8a70 124 M2MResourceInstanceList instance_list = resource->resource_instances();
mbedAustin 11:cada08fc8a70 125 if(!instance_list.empty()) {
mbedAustin 11:cada08fc8a70 126 M2MResourceInstanceList::const_iterator it;
mbedAustin 11:cada08fc8a70 127 it = instance_list.begin();
mbedAustin 11:cada08fc8a70 128 for (; it!=instance_list.end(); it++) {
mbedAustin 11:cada08fc8a70 129 uint16_t id = (*it)->instance_id();
mbedAustin 11:cada08fc8a70 130 serialize_resource_instance(id, (*it), nested_data, nested_data_size);
mbedAustin 11:cada08fc8a70 131 }
mbedAustin 11:cada08fc8a70 132 }
mbedAustin 11:cada08fc8a70 133 if(resource->name_id() != -1) {
mbedAustin 11:cada08fc8a70 134 success = true;
mbedAustin 11:cada08fc8a70 135 serialize_TILV(TYPE_MULTIPLE_RESOURCE, resource->name_id(), nested_data, nested_data_size, data, size);
mbedAustin 11:cada08fc8a70 136 }
mbedAustin 11:cada08fc8a70 137
mbedAustin 11:cada08fc8a70 138 free(nested_data);
mbedAustin 11:cada08fc8a70 139 nested_data = NULL;
mbedAustin 11:cada08fc8a70 140 return success;
mbedAustin 11:cada08fc8a70 141 }
mbedAustin 11:cada08fc8a70 142
mbedAustin 11:cada08fc8a70 143 void M2MTLVSerializer::serialize_resource_instance(uint16_t id, M2MResourceInstance *resource, uint8_t *&data, uint32_t &size)
mbedAustin 11:cada08fc8a70 144 {
mbedAustin 11:cada08fc8a70 145 serialize_TILV(TYPE_RESOURCE_INSTANCE, id, resource->value(), resource->value_length(), data, size);
mbedAustin 11:cada08fc8a70 146 }
mbedAustin 11:cada08fc8a70 147
mbedAustin 11:cada08fc8a70 148 void M2MTLVSerializer::serialize_TILV(uint8_t type, uint16_t id, uint8_t *value, uint32_t value_length, uint8_t *&data, uint32_t &size)
mbedAustin 11:cada08fc8a70 149 {
mbedAustin 11:cada08fc8a70 150 uint8_t *tlv = 0;
mbedAustin 11:cada08fc8a70 151 uint32_t type_length = 1;
mbedAustin 11:cada08fc8a70 152 type += id < 256 ? 0 : ID16;
mbedAustin 11:cada08fc8a70 153 type += value_length < 8 ? value_length :
mbedAustin 11:cada08fc8a70 154 value_length < 256 ? LENGTH8 :
mbedAustin 11:cada08fc8a70 155 value_length < 65536 ? LENGTH16 : LENGTH24;
mbedAustin 11:cada08fc8a70 156 uint8_t *tlv_type = (uint8_t*)malloc(type_length+1);
mbedAustin 11:cada08fc8a70 157 memset(tlv_type,0,type_length+1);
mbedAustin 11:cada08fc8a70 158 *tlv_type = type & 0xFF;
mbedAustin 11:cada08fc8a70 159
mbedAustin 11:cada08fc8a70 160 uint32_t id_size = 0;
mbedAustin 11:cada08fc8a70 161 uint8_t* id_ptr = serialize_id(id, id_size);
mbedAustin 11:cada08fc8a70 162
mbedAustin 11:cada08fc8a70 163 uint32_t length_size = 0;
mbedAustin 11:cada08fc8a70 164 uint8_t* length_ptr = serialize_length(value_length, length_size);
mbedAustin 11:cada08fc8a70 165
mbedAustin 11:cada08fc8a70 166 tlv = (uint8_t*)malloc(size + type_length + id_size + length_size + value_length+1);
mbedAustin 11:cada08fc8a70 167 memset(tlv,0,size + type_length + id_size + length_size + value_length+1);
mbedAustin 11:cada08fc8a70 168 if(data) {
mbedAustin 11:cada08fc8a70 169 memcpy(tlv, data, size);
mbedAustin 11:cada08fc8a70 170 }
mbedAustin 11:cada08fc8a70 171 memcpy(tlv+size, tlv_type, type_length);
mbedAustin 11:cada08fc8a70 172 memcpy(tlv+size+type_length, id_ptr, id_size);
mbedAustin 11:cada08fc8a70 173 memcpy(tlv+size+type_length+id_size, length_ptr, length_size);
mbedAustin 11:cada08fc8a70 174 memcpy(tlv+size+type_length+id_size+length_size, value, value_length);
mbedAustin 11:cada08fc8a70 175
mbedAustin 11:cada08fc8a70 176 if(tlv_type) {
mbedAustin 11:cada08fc8a70 177 free(tlv_type) ;
mbedAustin 11:cada08fc8a70 178 }
mbedAustin 11:cada08fc8a70 179 if(length_ptr) {
mbedAustin 11:cada08fc8a70 180 free(length_ptr);
mbedAustin 11:cada08fc8a70 181 }
mbedAustin 11:cada08fc8a70 182 if(id_ptr) {
mbedAustin 11:cada08fc8a70 183 free(id_ptr);
mbedAustin 11:cada08fc8a70 184 }
mbedAustin 11:cada08fc8a70 185 if(data) {
mbedAustin 11:cada08fc8a70 186 free(data);
mbedAustin 11:cada08fc8a70 187 data = NULL;
mbedAustin 11:cada08fc8a70 188 }
mbedAustin 11:cada08fc8a70 189 data = tlv;
mbedAustin 11:cada08fc8a70 190 size += type_length + id_size + length_size + value_length;
mbedAustin 11:cada08fc8a70 191 }
mbedAustin 11:cada08fc8a70 192
mbedAustin 11:cada08fc8a70 193 uint8_t* M2MTLVSerializer::serialize_id(uint16_t id, uint32_t &size)
mbedAustin 11:cada08fc8a70 194 {
mbedAustin 11:cada08fc8a70 195 uint32_t id_size = id > 255 ? 2 : 1;
mbedAustin 11:cada08fc8a70 196 uint8_t *id_ptr = (uint8_t*)malloc(id_size);
mbedAustin 11:cada08fc8a70 197 memset(id_ptr, 0 , id_size);
mbedAustin 11:cada08fc8a70 198 size += id_size;
mbedAustin 11:cada08fc8a70 199 if(id > 255) {
mbedAustin 11:cada08fc8a70 200 *id_ptr = (id & 0xFF00) >> 8;
mbedAustin 11:cada08fc8a70 201 id_ptr++;
mbedAustin 11:cada08fc8a70 202 *id_ptr = id & 0xFF;
mbedAustin 11:cada08fc8a70 203 id_ptr--;
mbedAustin 11:cada08fc8a70 204 } else {
mbedAustin 11:cada08fc8a70 205 *id_ptr = id & 0xFF;
mbedAustin 11:cada08fc8a70 206 }
mbedAustin 11:cada08fc8a70 207 return id_ptr;
mbedAustin 11:cada08fc8a70 208 }
mbedAustin 11:cada08fc8a70 209
mbedAustin 11:cada08fc8a70 210 uint8_t* M2MTLVSerializer::serialize_length(uint32_t length, uint32_t &size)
mbedAustin 11:cada08fc8a70 211 {
mbedAustin 11:cada08fc8a70 212 uint8_t *length_ptr = 0;
mbedAustin 11:cada08fc8a70 213 uint32_t length_size = 0;
mbedAustin 11:cada08fc8a70 214 if (length > 65535) {
mbedAustin 11:cada08fc8a70 215 length_size = 3;
mbedAustin 11:cada08fc8a70 216 length_ptr = (uint8_t*)malloc(length_size+1);
mbedAustin 11:cada08fc8a70 217 memset(length_ptr,0,length_size+1);
mbedAustin 11:cada08fc8a70 218 *length_ptr = (length & 0xFF0000) >> 16;
mbedAustin 11:cada08fc8a70 219 length_ptr++;
mbedAustin 11:cada08fc8a70 220 *length_ptr = (length & 0xFF00) >> 8;
mbedAustin 11:cada08fc8a70 221 length_ptr++;
mbedAustin 11:cada08fc8a70 222 *length_ptr = length & 0xFF;
mbedAustin 11:cada08fc8a70 223 length_ptr--;
mbedAustin 11:cada08fc8a70 224 length_ptr--;
mbedAustin 11:cada08fc8a70 225 } else if (length > 255) {
mbedAustin 11:cada08fc8a70 226 length_size = 2;
mbedAustin 11:cada08fc8a70 227 length_ptr = (uint8_t*)malloc(length_size+1);
mbedAustin 11:cada08fc8a70 228 memset(length_ptr,0,length_size+1);
mbedAustin 11:cada08fc8a70 229 *length_ptr = (length & 0xFF00) >> 8;
mbedAustin 11:cada08fc8a70 230 length_ptr++;
mbedAustin 11:cada08fc8a70 231 *length_ptr = length & 0xFF;
mbedAustin 11:cada08fc8a70 232 length_ptr--;
mbedAustin 11:cada08fc8a70 233 } else if (length > 7) {
mbedAustin 11:cada08fc8a70 234 length_size = 1;
mbedAustin 11:cada08fc8a70 235 length_ptr = (uint8_t*)malloc(length_size+1);
mbedAustin 11:cada08fc8a70 236 memset(length_ptr,0,length_size+1);
mbedAustin 11:cada08fc8a70 237 *length_ptr = length & 0xFF;
mbedAustin 11:cada08fc8a70 238 }
mbedAustin 11:cada08fc8a70 239 size += length_size;
mbedAustin 11:cada08fc8a70 240 return length_ptr;
mbedAustin 11:cada08fc8a70 241 }
mbedAustin 11:cada08fc8a70 242