1 | // Copyright (c) Microsoft. All rights reserved.
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2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information.
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3 |
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4 | #include <stdlib.h> /*for free*/
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5 | #include "azure_c_shared_utility/gballoc.h"
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6 |
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7 | #include <stdbool.h>
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8 | #include "datamarshaller.h"
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9 | #include "azure_c_shared_utility/crt_abstractions.h"
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10 | #include "schema.h"
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11 | #include "jsonencoder.h"
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12 | #include "agenttypesystem.h"
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13 | #include "azure_c_shared_utility/xlogging.h"
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14 | #include "parson.h"
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15 | #include "azure_c_shared_utility/vector.h"
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16 |
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17 | MU_DEFINE_ENUM_STRINGS_WITHOUT_INVALID(DATA_MARSHALLER_RESULT, DATA_MARSHALLER_RESULT_VALUES);
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18 |
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19 | #define LOG_DATA_MARSHALLER_ERROR \
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20 | LogError("(result = %s)", MU_ENUM_TO_STRING(DATA_MARSHALLER_RESULT, result));
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21 |
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22 | typedef struct DATA_MARSHALLER_HANDLE_DATA_TAG
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23 | {
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24 | SCHEMA_MODEL_TYPE_HANDLE ModelHandle;
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25 | bool IncludePropertyPath;
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26 | } DATA_MARSHALLER_HANDLE_DATA;
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27 |
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28 | static int NoCloneFunction(void** destination, const void* source)
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29 | {
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30 | *destination = (void*)source;
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31 | return 0;
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32 | }
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33 |
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34 | static void NoFreeFunction(void* value)
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35 | {
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36 | (void)value;
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37 | }
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38 |
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39 | DATA_MARSHALLER_HANDLE DataMarshaller_Create(SCHEMA_MODEL_TYPE_HANDLE modelHandle, bool includePropertyPath)
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40 | {
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41 | DATA_MARSHALLER_HANDLE_DATA* result;
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42 |
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43 | /*Codes_SRS_DATA_MARSHALLER_99_019:[ DataMarshaller_Create shall return NULL if any argument is NULL.]*/
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44 | if (modelHandle == NULL)
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45 | {
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46 | result = NULL;
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47 | LogError("(result = %s)", MU_ENUM_TO_STRING(DATA_MARSHALLER_RESULT, DATA_MARSHALLER_INVALID_ARG));
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48 | }
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49 | else if ((result = (DATA_MARSHALLER_HANDLE_DATA*)calloc(1, sizeof(DATA_MARSHALLER_HANDLE_DATA))) == NULL)
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50 | {
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51 | /* Codes_SRS_DATA_MARSHALLER_99_048:[On any other errors not explicitly specified, DataMarshaller_Create shall return NULL.] */
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52 | result = NULL;
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53 | LogError("(result = %s)", MU_ENUM_TO_STRING(DATA_MARSHALLER_RESULT, DATA_MARSHALLER_ERROR));
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54 | }
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55 | else
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56 | {
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57 | /*everything ok*/
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58 | /*Codes_SRS_DATA_MARSHALLER_99_018:[ DataMarshaller_Create shall create a new DataMarshaller instance and on success it shall return a non NULL handle.]*/
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59 | result->ModelHandle = modelHandle;
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60 | result->IncludePropertyPath = includePropertyPath;
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61 | }
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62 | return result;
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63 | }
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64 |
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65 | void DataMarshaller_Destroy(DATA_MARSHALLER_HANDLE dataMarshallerHandle)
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66 | {
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67 | /* Codes_SRS_DATA_MARSHALLER_99_024:[ When called with a NULL handle, DataMarshaller_Destroy shall do nothing.] */
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68 | if (dataMarshallerHandle != NULL)
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69 | {
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70 | /* Codes_SRS_DATA_MARSHALLER_99_022:[ DataMarshaller_Destroy shall free all resources associated with the dataMarshallerHandle argument.] */
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71 | DATA_MARSHALLER_HANDLE_DATA* dataMarshallerInstance = (DATA_MARSHALLER_HANDLE_DATA*)dataMarshallerHandle;
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72 | free(dataMarshallerInstance);
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73 | }
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74 | }
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75 |
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76 | DATA_MARSHALLER_RESULT DataMarshaller_SendData(DATA_MARSHALLER_HANDLE dataMarshallerHandle, size_t valueCount, const DATA_MARSHALLER_VALUE* values, unsigned char** destination, size_t* destinationSize)
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77 | {
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78 | DATA_MARSHALLER_HANDLE_DATA* dataMarshallerInstance = (DATA_MARSHALLER_HANDLE_DATA*)dataMarshallerHandle;
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79 | DATA_MARSHALLER_RESULT result;
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80 | MULTITREE_HANDLE treeHandle;
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81 |
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82 | /* Codes_SRS_DATA_MARSHALLER_99_034:[All argument checks shall be performed before calling any other modules.] */
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83 | /* Codes_SRS_DATA_MARSHALLER_99_004:[ DATA_MARSHALLER_INVALID_ARG shall be returned when the function has detected an invalid parameter (NULL) being passed to the function.] */
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84 | if ((values == NULL) ||
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85 | (dataMarshallerHandle == NULL) ||
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86 | (destination == NULL) ||
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87 | (destinationSize == NULL) ||
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88 | /* Codes_SRS_DATA_MARSHALLER_99_033:[ DATA_MARSHALLER_INVALID_ARG shall be returned if the valueCount is zero.] */
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89 | (valueCount == 0))
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90 | {
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91 | result = DATA_MARSHALLER_INVALID_ARG;
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92 | LOG_DATA_MARSHALLER_ERROR
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93 | }
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94 | else
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95 | {
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96 | size_t i;
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97 | bool includePropertyPath = dataMarshallerInstance->IncludePropertyPath;
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98 | /* VS complains wrongly that result is not initialized */
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99 | result = DATA_MARSHALLER_ERROR;
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100 |
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101 | for (i = 0; i < valueCount; i++)
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102 | {
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103 | if ((values[i].PropertyPath == NULL) ||
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104 | (values[i].Value == NULL))
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105 | {
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106 | /*Codes_SRS_DATA_MARSHALLER_99_007:[ DATA_MARSHALLER_INVALID_MODEL_PROPERTY shall be returned when any of the items in values contain invalid data]*/
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107 | result = DATA_MARSHALLER_INVALID_MODEL_PROPERTY;
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108 | LOG_DATA_MARSHALLER_ERROR
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109 | break;
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110 | }
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111 |
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112 | if ((!dataMarshallerInstance->IncludePropertyPath) &&
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113 | (values[i].Value->type == EDM_COMPLEX_TYPE_TYPE) &&
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114 | (valueCount > 1))
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115 | {
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116 | /* Codes_SRS_DATAMARSHALLER_01_002: [If the includePropertyPath argument passed to DataMarshaller_Create was false and the number of values passed to SendData is greater than 1 and at least one of them is a struct, DataMarshaller_SendData shall fallback to including the complete property path in the output JSON.] */
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117 | includePropertyPath = true;
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118 | }
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119 | }
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120 |
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121 | if (i == valueCount)
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122 | {
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123 | /* Codes_SRS_DATA_MARSHALLER_99_037:[DataMarshaller shall store as MultiTree the data to be encoded by the JSONEncoder module.] */
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124 | if ((treeHandle = MultiTree_Create(NoCloneFunction, NoFreeFunction)) == NULL)
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125 | {
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126 | /* Codes_SRS_DATA_MARSHALLER_99_035:[DATA_MARSHALLER_MULTITREE_ERROR shall be returned in case any MultiTree API call fails.] */
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127 | result = DATA_MARSHALLER_MULTITREE_ERROR;
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128 | LOG_DATA_MARSHALLER_ERROR
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129 | }
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130 | else
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131 | {
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132 | size_t j;
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133 | result = DATA_MARSHALLER_OK; /* addressing warning in VS compiler */
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134 | /* Codes_SRS_DATA_MARSHALLER_99_038:[For each pair in the values argument, a string : value pair shall exist in the JSON object in the form of propertyName : value.] */
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135 | for (j = 0; j < valueCount; j++)
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136 | {
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137 | if ((includePropertyPath == false) && (values[j].Value->type == EDM_COMPLEX_TYPE_TYPE))
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138 | {
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139 | size_t k;
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140 |
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141 | /* Codes_SRS_DATAMARSHALLER_01_001: [If the includePropertyPath argument passed to DataMarshaller_Create was false and only one struct is being sent, the relative path of the value passed to DataMarshaller_SendData - including property name - shall be ignored and the value shall be placed at JSON root.] */
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142 | for (k = 0; k < values[j].Value->value.edmComplexType.nMembers; k++)
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143 | {
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144 | /* Codes_SRS_DATAMARSHALLER_01_004: [In this case the members of the struct shall be added as leafs into the MultiTree, each leaf having the name of the struct member.] */
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145 | if (MultiTree_AddLeaf(treeHandle, values[j].Value->value.edmComplexType.fields[k].fieldName, (void*)values[j].Value->value.edmComplexType.fields[k].value) != MULTITREE_OK)
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146 | {
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147 | break;
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148 | }
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149 | }
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150 |
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151 | if (k < values[j].Value->value.edmComplexType.nMembers)
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152 | {
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153 | /* Codes_SRS_DATA_MARSHALLER_99_035:[DATA_MARSHALLER_MULTITREE_ERROR shall be returned in case any MultiTree API call fails.] */
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154 | result = DATA_MARSHALLER_MULTITREE_ERROR;
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155 | LOG_DATA_MARSHALLER_ERROR
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156 | break;
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157 | }
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158 | }
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159 | else
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160 | {
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161 | /* Codes_SRS_DATA_MARSHALLER_99_039:[ If the includePropertyPath argument passed to DataMarshaller_Create was true each property shall be placed in the appropriate position in the JSON according to its path in the model.] */
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162 | if (MultiTree_AddLeaf(treeHandle, values[j].PropertyPath, (void*)values[j].Value) != MULTITREE_OK)
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163 | {
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164 | /* Codes_SRS_DATA_MARSHALLER_99_035:[DATA_MARSHALLER_MULTITREE_ERROR shall be returned in case any MultiTree API call fails.] */
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165 | result = DATA_MARSHALLER_MULTITREE_ERROR;
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166 | LOG_DATA_MARSHALLER_ERROR
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167 | break;
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168 | }
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169 | }
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170 |
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171 | }
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172 |
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173 | if (j == valueCount)
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174 | {
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175 | STRING_HANDLE payload = STRING_new();
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176 | if (payload == NULL)
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177 | {
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178 | result = DATA_MARSHALLER_ERROR;
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179 | LOG_DATA_MARSHALLER_ERROR
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180 | }
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181 | else
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182 | {
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183 | if (JSONEncoder_EncodeTree(treeHandle, payload, (JSON_ENCODER_TOSTRING_FUNC)AgentDataTypes_ToString) != JSON_ENCODER_OK)
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184 | {
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185 | /* Codes_SRS_DATA_MARSHALLER_99_027:[ DATA_MARSHALLER_JSON_ENCODER_ERROR shall be returned when JSONEncoder returns an error code.] */
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186 | result = DATA_MARSHALLER_JSON_ENCODER_ERROR;
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187 | LOG_DATA_MARSHALLER_ERROR
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188 | }
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189 | else
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190 | {
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191 | /*Codes_SRS_DATAMARSHALLER_02_007: [DataMarshaller_SendData shall copy in the output parameters *destination, *destinationSize the content and the content length of the encoded JSON tree.] */
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192 | size_t resultSize = STRING_length(payload);
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193 | unsigned char* temp = malloc(resultSize);
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194 | if (temp == NULL)
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195 | {
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196 | /*Codes_SRS_DATA_MARSHALLER_99_015:[ DATA_MARSHALLER_ERROR shall be returned in all the other error cases not explicitly defined here.]*/
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197 | result = DATA_MARSHALLER_ERROR;
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198 | LOG_DATA_MARSHALLER_ERROR;
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199 | }
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200 | else
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201 | {
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202 | (void)memcpy(temp, STRING_c_str(payload), resultSize);
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203 | *destination = temp;
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204 | *destinationSize = resultSize;
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205 | result = DATA_MARSHALLER_OK;
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206 | }
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207 | }
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208 | STRING_delete(payload);
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209 | }
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210 | } /* if (j==valueCount)*/
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211 | MultiTree_Destroy(treeHandle);
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212 | } /* MultiTree_Create */
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213 | }
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214 | }
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215 |
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216 | return result;
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217 | }
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218 |
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219 |
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220 | DATA_MARSHALLER_RESULT DataMarshaller_SendData_ReportedProperties(DATA_MARSHALLER_HANDLE dataMarshallerHandle, VECTOR_HANDLE values, unsigned char** destination, size_t* destinationSize)
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221 | {
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222 | DATA_MARSHALLER_RESULT result;
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223 | /*Codes_SRS_DATA_MARSHALLER_02_021: [ If argument dataMarshallerHandle is NULL then DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_INVALID_ARG. ]*/
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224 | /*Codes_SRS_DATA_MARSHALLER_02_008: [ If argument values is NULL then DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_INVALID_ARG. ]*/
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225 | /*Codes_SRS_DATA_MARSHALLER_02_009: [ If argument destination NULL then DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_INVALID_ARG. ]*/
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226 | /*Codes_SRS_DATA_MARSHALLER_02_010: [ If argument destinationSize NULL then DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_INVALID_ARG. ]*/
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227 | if (
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228 | (dataMarshallerHandle == NULL) ||
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229 | (values == NULL) ||
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230 | (destination == NULL) ||
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231 | (destinationSize == NULL)
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232 | )
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233 | {
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234 | LogError("invalid argument DATA_MARSHALLER_HANDLE dataMarshallerHandle=%p, VECTOR_HANDLE values=%p, unsigned char** destination=%p, size_t* destinationSize=%p",
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235 | dataMarshallerHandle,
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236 | values,
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237 | destination,
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238 | destinationSize);
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239 | result = DATA_MARSHALLER_INVALID_ARG;
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240 | }
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241 | else
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242 | {
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243 | /*Codes_SRS_DATA_MARSHALLER_02_012: [ DataMarshaller_SendData_ReportedProperties shall create an empty JSON_Value. ]*/
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244 | JSON_Value* json = json_value_init_object();
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245 | if (json == NULL)
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246 | {
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247 | /*Codes_SRS_DATA_MARSHALLER_02_019: [ If any failure occurs, DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_ERROR. ]*/
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248 | LogError("failure calling json_value_init_object");
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249 | result = DATA_MARSHALLER_ERROR;
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250 | }
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251 | else
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252 | {
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253 | /*Codes_SRS_DATA_MARSHALLER_02_013: [ DataMarshaller_SendData_ReportedProperties shall get the object behind the JSON_Value by calling json_object. ]*/
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254 | JSON_Object* jsonObject = json_object(json);
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255 | if (jsonObject == NULL)
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256 | {
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257 | /*Codes_SRS_DATA_MARSHALLER_02_019: [ If any failure occurs, DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_ERROR. ]*/
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258 | LogError("failure calling json_object");
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259 | result = DATA_MARSHALLER_ERROR;
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260 | }
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261 | else
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262 | {
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263 | size_t nReportedProperties = VECTOR_size(values), nProcessedProperties = 0;
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264 |
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265 | for (size_t i = 0;i < nReportedProperties; i++)
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266 | {
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267 | DATA_MARSHALLER_VALUE* v = *(DATA_MARSHALLER_VALUE**)VECTOR_element(values, i);
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268 | STRING_HANDLE s = STRING_new();
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269 | if (s == NULL)
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270 | {
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271 | /*Codes_SRS_DATA_MARSHALLER_02_019: [ If any failure occurs, DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_ERROR. ]*/
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272 | LogError("failure calling STRING_new");
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273 | i = nReportedProperties;/*forces loop to break, result is set in the "if" following this for*/
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274 | }
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275 | else
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276 | {
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277 | /*Codes_SRS_DATA_MARSHALLER_02_014: [ For every reported property, DataMarshaller_SendData_ReportedProperties shall get the reported property's JSON value (as string) by calling AgentDataTypes_ToString. ]*/
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278 | if (AgentDataTypes_ToString(s, v->Value) != AGENT_DATA_TYPES_OK)
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279 | {
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280 | /*Codes_SRS_DATA_MARSHALLER_02_019: [ If any failure occurs, DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_ERROR. ]*/
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281 | LogError("failure calling AgentDataTypes_ToString");
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282 | i = nReportedProperties;/*forces loop to break, result is set in the "if" following this for*/
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283 | }
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284 | else
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285 | {
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286 | /*Codes_SRS_DATA_MARSHALLER_02_015: [ DataMarshaller_SendData_ReportedProperties shall import the JSON value (as string) by calling json_parse_string. ]*/
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287 | JSON_Value * rightSide = json_parse_string(STRING_c_str(s));
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288 | if (rightSide == NULL)
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289 | {
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290 | /*Codes_SRS_DATA_MARSHALLER_02_019: [ If any failure occurs, DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_ERROR. ]*/
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291 | LogError("failure calling json_parse_string");
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292 | i = nReportedProperties;/*forces loop to break, result is set in the "if" following this for*/
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293 | }
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294 | else
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295 | {
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296 | char* leftSide;
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297 | if (mallocAndStrcpy_s(&leftSide, v->PropertyPath) != 0)
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298 | {
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299 | /*Codes_SRS_DATA_MARSHALLER_02_019: [ If any failure occurs, DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_ERROR. ]*/
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300 | LogError("failure calling mallocAndStrcpy_s");
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301 | json_value_free(rightSide);
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302 | i = nReportedProperties;/*forces loop to break, result is set in the "if" following this for*/
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303 | }
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304 | else
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305 | {
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306 | /*Codes_SRS_DATA_MARSHALLER_02_016: [ DataMarshaller_SendData_ReportedProperties shall replace all the occurences of / with . in the reported property paths. ]*/
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307 | char *whereIsSlash;
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308 | while ((whereIsSlash = strchr(leftSide, '/')) != NULL)
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309 | {
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310 | *whereIsSlash = '.';
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311 | }
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312 |
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313 | /*Codes_SRS_DATA_MARSHALLER_02_017: [ DataMarshaller_SendData_ReportedProperties shall use json_object_dotset_value passing the reported property path and the imported json value. ]*/
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314 | /*Codes_SRS_DATA_MARSHALLER_02_011: [ DataMarshaller_SendData_ReportedProperties shall ignore the value of includePropertyPath and shall consider it to be true. ]*/
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315 | if (json_object_dotset_value(jsonObject, leftSide, rightSide) != JSONSuccess)
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316 | {
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317 | /*Codes_SRS_DATA_MARSHALLER_02_019: [ If any failure occurs, DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_ERROR. ]*/
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318 | LogError("failure calling json_object_dotset_value");
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319 | json_value_free(rightSide);
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320 | i = nReportedProperties;/*forces loop to break, result is set in the "if" following this for*/
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321 | }
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322 | else
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323 | {
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324 | /*all is fine with this property... */
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325 | nProcessedProperties++;
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326 | }
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327 | free(leftSide);
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328 | }
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329 | }
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330 | }
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331 | STRING_delete(s);
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332 | }
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333 | }
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334 |
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335 | if (nProcessedProperties != nReportedProperties)
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336 | {
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337 | result = DATA_MARSHALLER_ERROR;
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338 | /*all properties have NOT been processed*/
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339 | /*return result as is*/
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340 | }
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341 | else
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342 | {
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343 | /*Codes_SRS_DATA_MARSHALLER_02_018: [ DataMarshaller_SendData_ReportedProperties shall use json_serialize_to_string_pretty to produce the output JSON string that fills out parameters destination and destionationSize. ]*/
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344 | char* temp = json_serialize_to_string_pretty(json);
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345 | if (temp == NULL)
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346 | {
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347 | /*Codes_SRS_DATA_MARSHALLER_02_019: [ If any failure occurs, DataMarshaller_SendData_ReportedProperties shall fail and return DATA_MARSHALLER_ERROR. ]*/
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348 | LogError("failure calling json_serialize_to_string_pretty ");
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349 | result = DATA_MARSHALLER_ERROR;
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350 | }
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351 | else
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352 | {
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353 | /*Codes_SRS_DATA_MARSHALLER_02_020: [ Otherwise DataMarshaller_SendData_ReportedProperties shall succeed and return DATA_MARSHALLER_OK. ]*/
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354 | *destination = (unsigned char*)temp;
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355 | *destinationSize = strlen(temp);
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356 | result = DATA_MARSHALLER_OK;
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357 | /*all is fine... */
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358 | }
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359 | }
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360 | }
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361 | json_value_free(json);
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362 | }
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363 | }
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364 | return result;
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365 | }
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