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1 /**
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2 * Cloud storage plugins for Orthanc
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3 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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4 *
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5 * This program is free software: you can redistribute it and/or
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6 * modify it under the terms of the GNU Affero General Public License
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7 * as published by the Free Software Foundation, either version 3 of
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8 * the License, or (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful, but
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11 * WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Affero General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Affero General Public License
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 **/
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18
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19 #if GOOGLE_STORAGE_PLUGIN==1
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20 #include "../Google/GoogleStoragePlugin.h"
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21 #define StoragePluginFactory GoogleStoragePluginFactory
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22 #elif AZURE_STORAGE_PLUGIN==1
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23 #include "../Azure/AzureBlobStoragePlugin.h"
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24 #define StoragePluginFactory AzureBlobStoragePluginFactory
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25 #elif AWS_STORAGE_PLUGIN==1
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26 #include "../Aws/AwsS3StoragePlugin.h"
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27 #define StoragePluginFactory AwsS3StoragePluginFactory
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28 #else
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29 #pragma message(error "define a plugin")
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30 #endif
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31
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32 #include <string.h>
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33 #include <stdio.h>
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34 #include <string>
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35
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36 #include <iostream>
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37 #include "../Common/EncryptionHelpers.h"
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38 #include "../Common/EncryptionConfigurator.h"
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39
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40 static std::unique_ptr<IStoragePlugin> plugin;
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41
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42 static std::unique_ptr<EncryptionHelpers> crypto;
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43 static bool cryptoEnabled = false;
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44
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45
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46 static OrthancPluginErrorCode StorageCreate(const char* uuid,
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47 const void* content,
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48 int64_t size,
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49 OrthancPluginContentType type)
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50 {
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51 try
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52 {
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53 std::unique_ptr<IStoragePlugin::IWriter> writer(plugin->GetWriterForObject(uuid, type, cryptoEnabled));
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54
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55 if (cryptoEnabled)
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56 {
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57 std::string encryptedFile;
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58
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59 try
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60 {
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61 crypto->Encrypt(encryptedFile, (const char*)content, size);
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62 }
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63 catch (EncryptionException& ex)
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64 {
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65 OrthancPlugins::LogError(std::string(StoragePluginFactory::GetStoragePluginName()) + ": error while encrypting object " + std::string(uuid) + ": " + ex.what());
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66 return OrthancPluginErrorCode_StorageAreaPlugin;
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67 }
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68
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69 writer->Write(encryptedFile.data(), encryptedFile.size());
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70 }
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71 else
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72 {
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73 writer->Write(reinterpret_cast<const char*>(content), size);
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74 }
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75 }
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76 catch (StoragePluginException& ex)
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77 {
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78 OrthancPlugins::LogError(std::string(StoragePluginFactory::GetStoragePluginName()) + ": error while creating object " + std::string(uuid) + ": " + ex.what());
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79 return OrthancPluginErrorCode_StorageAreaPlugin;
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80 }
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81
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82 return OrthancPluginErrorCode_Success;
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83 }
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84
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85
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86 static OrthancPluginErrorCode StorageRead(void** content,
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87 int64_t* size,
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88 const char* uuid,
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89 OrthancPluginContentType type)
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90 {
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91 try
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92 {
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93 std::unique_ptr<IStoragePlugin::IReader> reader(plugin->GetReaderForObject(uuid, type, cryptoEnabled));
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94
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95 size_t fileSize = reader->GetSize();
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96
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97 if (cryptoEnabled)
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98 {
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99 *size = fileSize - crypto->OVERHEAD_SIZE;
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100 }
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101 else
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102 {
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103 *size = fileSize;
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104 }
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105
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106 if (*size <= 0)
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107 {
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108 OrthancPlugins::LogError(std::string(StoragePluginFactory::GetStoragePluginName()) + ": error while reading object " + std::string(uuid) + ", size of file is too small: " + boost::lexical_cast<std::string>(fileSize) + " bytes");
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109 return OrthancPluginErrorCode_StorageAreaPlugin;
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110 }
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111
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112 *content = malloc(static_cast<uint64_t>(*size));
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113 if (*content == nullptr)
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114 {
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115 OrthancPlugins::LogError(std::string(StoragePluginFactory::GetStoragePluginName()) + ": error while reading object " + std::string(uuid) + ", cannot allocate memory of size " + boost::lexical_cast<std::string>(*size) + " bytes");
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116 return OrthancPluginErrorCode_StorageAreaPlugin;
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117 }
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118
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119 if (cryptoEnabled)
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120 {
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121 std::vector<char> encrypted(fileSize);
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122 reader->Read(encrypted.data(), fileSize);
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123
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124 try
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125 {
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126 crypto->Decrypt((char*)(*content), encrypted.data(), fileSize);
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127 }
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128 catch (EncryptionException& ex)
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129 {
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130 OrthancPlugins::LogError(std::string(StoragePluginFactory::GetStoragePluginName()) + ": error while decrypting object " + std::string(uuid) + ": " + ex.what());
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131 return OrthancPluginErrorCode_StorageAreaPlugin;
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132 }
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133 }
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134 else
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135 {
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136 reader->Read(*(reinterpret_cast<char**>(content)), fileSize);
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137 }
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138 }
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139 catch (StoragePluginException& ex)
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140 {
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141 OrthancPlugins::LogError(std::string(StoragePluginFactory::GetStoragePluginName()) + ": error while creating object " + std::string(uuid) + ": " + ex.what());
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142 return OrthancPluginErrorCode_StorageAreaPlugin;
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143 }
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144
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145 return OrthancPluginErrorCode_Success;
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146
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147 }
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148
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149
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150 static OrthancPluginErrorCode StorageRemove(const char* uuid,
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151 OrthancPluginContentType type)
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152 {
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153 try
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154 {
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155 plugin->DeleteObject(uuid, type, cryptoEnabled);
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156 }
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157 catch (StoragePluginException& ex)
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158 {
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159 OrthancPlugins::LogError(std::string(StoragePluginFactory::GetStoragePluginName()) + ": error while deleting object " + std::string(uuid) + ": " + ex.what());
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160 return OrthancPluginErrorCode_StorageAreaPlugin;
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161 }
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162
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163 return OrthancPluginErrorCode_Success;
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164 }
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165
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166
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167 extern "C"
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168 {
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169 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context)
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170 {
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171 OrthancPlugins::SetGlobalContext(context);
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172
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173 OrthancPlugins::OrthancConfiguration orthancConfig;
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174
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175 OrthancPlugins::LogWarning(std::string(StoragePluginFactory::GetStoragePluginName()) + " plugin is initializing");
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176
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177 /* Check the version of the Orthanc core */
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178 if (OrthancPluginCheckVersion(context) == 0)
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179 {
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180 char info[1024];
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181 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin",
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182 context->orthancVersion,
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183 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER,
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184 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER,
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185 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER);
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186 OrthancPlugins::LogError(info);
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187 return -1;
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188 }
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189
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190 plugin.reset(StoragePluginFactory::CreateStoragePlugin(orthancConfig));
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191
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8
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192 if (plugin.get() == nullptr)
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193 {
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194 return -1;
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195 }
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196
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1
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197 static const char* const ENCRYPTION_SECTION = "StorageEncryption";
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198
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199 if (orthancConfig.IsSection(ENCRYPTION_SECTION))
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200 {
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201 OrthancPlugins::OrthancConfiguration cryptoSection;
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202 orthancConfig.GetSection(cryptoSection, ENCRYPTION_SECTION);
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203
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204 crypto.reset(EncryptionConfigurator::CreateEncryptionHelpers(cryptoSection));
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205 cryptoEnabled = crypto.get() != nullptr;
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206 }
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207 else
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208 {
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209 OrthancPlugins::LogWarning(std::string(StoragePluginFactory::GetStoragePluginName()) + ": client-side encryption is disabled");
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210 }
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211
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212 OrthancPluginRegisterStorageArea(context, StorageCreate, StorageRead, StorageRemove);
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213
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214 return 0;
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215 }
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216
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217
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218 ORTHANC_PLUGINS_API void OrthancPluginFinalize()
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219 {
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220 OrthancPlugins::LogWarning(std::string(StoragePluginFactory::GetStoragePluginName()) + " plugin is finalizing");
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221 }
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222
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223
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224 ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
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225 {
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226 return StoragePluginFactory::GetStoragePluginName();
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227 }
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228
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229
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230 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
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231 {
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232 return PLUGIN_VERSION;
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233 }
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234 }
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235
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