Mercurial > hg > orthanc-authorization
annotate Plugin/Plugin.cpp @ 34:53dbed29949a
sync
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 01 Jul 2020 16:10:02 +0200 |
| parents | 79d871605ffd |
| children | 9bdfa76c8923 |
| rev | line source |
|---|---|
| 1 | 1 /** |
| 2 * Advanced authorization plugin for Orthanc | |
|
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3 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 1 | 4 * |
| 5 * This program is free software: you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Affero General Public License | |
| 7 * as published by the Free Software Foundation, either version 3 of | |
| 8 * the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This program is distributed in the hope that it will be useful, but | |
| 11 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Affero General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Affero General Public License | |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 **/ | |
| 18 | |
| 19 #include "AssociativeArray.h" | |
| 20 #include "DefaultAuthorizationParser.h" | |
| 21 #include "CachedAuthorizationService.h" | |
| 22 #include "AuthorizationWebService.h" | |
| 23 #include "MemoryCache.h" | |
| 24 | |
| 34 | 25 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h" |
| 26 | |
| 32 | 27 #include <Logging.h> |
| 28 #include <Toolbox.h> | |
| 1 | 29 |
| 30 | |
| 31 // Configuration of the authorization plugin | |
| 32 static std::auto_ptr<OrthancPlugins::IAuthorizationParser> authorizationParser_; | |
| 33 static std::auto_ptr<OrthancPlugins::IAuthorizationService> authorizationService_; | |
| 34 static std::set<std::string> uncheckedResources_; | |
| 35 static std::list<std::string> uncheckedFolders_; | |
| 36 static std::list<OrthancPlugins::Token> tokens_; | |
| 37 static std::set<OrthancPlugins::AccessLevel> uncheckedLevels_; | |
| 38 | |
| 39 | |
| 40 static int32_t FilterHttpRequests(OrthancPluginHttpMethod method, | |
| 41 const char *uri, | |
| 42 const char *ip, | |
| 43 uint32_t headersCount, | |
| 44 const char *const *headersKeys, | |
| 45 const char *const *headersValues, | |
| 46 uint32_t getArgumentsCount, | |
| 47 const char *const *getArgumentsKeys, | |
| 48 const char *const *getArgumentsValues) | |
| 49 { | |
| 50 try | |
| 51 { | |
| 52 if (method == OrthancPluginHttpMethod_Get) | |
| 53 { | |
| 54 // Allow GET accesses to static resources | |
| 55 if (uncheckedResources_.find(uri) != uncheckedResources_.end()) | |
| 56 { | |
| 57 return 1; | |
| 58 } | |
| 59 | |
| 60 for (std::list<std::string>::const_iterator | |
| 61 it = uncheckedFolders_.begin(); it != uncheckedFolders_.end(); ++it) | |
| 62 { | |
| 63 if (Orthanc::Toolbox::StartsWith(uri, *it)) | |
| 64 { | |
| 65 return 1; | |
| 66 } | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 if (authorizationParser_.get() != NULL && | |
| 71 authorizationService_.get() != NULL) | |
| 72 { | |
| 73 // Parse the resources that are accessed through this URI | |
| 74 OrthancPlugins::IAuthorizationParser::AccessedResources accesses; | |
| 75 if (!authorizationParser_->Parse(accesses, uri)) | |
| 76 { | |
| 77 return 0; // Unable to parse this URI | |
| 78 } | |
| 79 | |
| 80 // Loop over all the accessed resources to ensure access is | |
| 81 // granted to each of them | |
| 82 for (OrthancPlugins::IAuthorizationParser::AccessedResources::const_iterator | |
| 83 access = accesses.begin(); access != accesses.end(); ++access) | |
| 84 { | |
| 85 // Ignored the access levels that are unchecked | |
| 86 // (cf. "UncheckedLevels" option) | |
| 87 if (uncheckedLevels_.find(access->GetLevel()) == uncheckedLevels_.end()) | |
| 88 { | |
| 89 LOG(INFO) << "Testing whether access to " | |
| 90 << OrthancPlugins::EnumerationToString(access->GetLevel()) | |
| 91 << " \"" << access->GetOrthancId() << "\" is allowed"; | |
| 92 | |
| 93 bool granted = false; | |
| 94 unsigned int validity; // ignored | |
| 95 | |
| 96 if (tokens_.empty()) | |
| 97 { | |
| 98 granted = authorizationService_->IsGranted(validity, method, *access); | |
| 99 } | |
| 100 else | |
| 101 { | |
| 102 OrthancPlugins::AssociativeArray headers | |
| 103 (headersCount, headersKeys, headersValues, false); | |
| 104 | |
| 105 OrthancPlugins::AssociativeArray getArguments | |
| 106 (getArgumentsCount, getArgumentsKeys, getArgumentsValues, true); | |
| 107 | |
| 108 // Loop over all the authorization tokens stored in the HTTP | |
| 109 // headers, until finding one that is granted | |
| 110 for (std::list<OrthancPlugins::Token>::const_iterator | |
| 111 token = tokens_.begin(); token != tokens_.end(); ++token) | |
| 112 { | |
| 113 std::string value; | |
| 114 | |
| 115 bool hasValue = false; | |
| 116 switch (token->GetType()) | |
| 117 { | |
| 118 case OrthancPlugins::TokenType_HttpHeader: | |
| 119 hasValue = headers.GetValue(value, token->GetKey()); | |
| 120 break; | |
| 121 | |
| 122 case OrthancPlugins::TokenType_GetArgument: | |
| 123 hasValue = getArguments.GetValue(value, token->GetKey()); | |
| 124 break; | |
| 125 | |
| 126 default: | |
| 127 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 128 } | |
| 129 | |
| 130 if (hasValue && | |
| 131 authorizationService_->IsGranted(validity, method, *access, *token, value)) | |
| 132 { | |
| 133 granted = true; | |
| 134 break; | |
| 135 } | |
| 136 } | |
| 137 } | |
| 138 | |
| 139 if (!granted) | |
| 140 { | |
| 141 return 0; | |
| 142 } | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 // Access is granted to all the resources | |
| 147 return 1; | |
| 148 } | |
| 149 | |
| 150 // By default, forbid access to all the resources | |
| 151 return 0; | |
| 152 } | |
| 153 catch (std::runtime_error& e) | |
| 154 { | |
| 155 LOG(ERROR) << e.what(); | |
| 156 return OrthancPluginErrorCode_Success; // Ignore error | |
| 157 } | |
| 158 catch (Orthanc::OrthancException& e) | |
| 159 { | |
| 160 LOG(ERROR) << e.What(); | |
| 161 return OrthancPluginErrorCode_Success; // Ignore error | |
| 162 } | |
| 163 catch (...) | |
| 164 { | |
| 165 LOG(ERROR) << "Unhandled internal exception"; | |
| 166 return OrthancPluginErrorCode_Success; // Ignore error | |
| 167 } | |
| 168 } | |
| 169 | |
| 170 | |
| 171 #if !ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 2, 1) | |
| 172 static int32_t FilterHttpRequestsFallback(OrthancPluginHttpMethod method, | |
| 173 const char *uri, | |
| 174 const char *ip, | |
| 175 uint32_t headersCount, | |
| 176 const char *const *headersKeys, | |
| 177 const char *const *headersValues) | |
| 178 { | |
| 179 // Fallback wrapper function for Orthanc <= 1.2.0, where the GET | |
| 180 // arguments were not available in the HTTP filters | |
| 181 return FilterHttpRequests(method, uri, ip, | |
| 182 headersCount, headersKeys, headersValues, | |
| 183 0, NULL, NULL); | |
| 184 } | |
| 185 #endif | |
| 186 | |
| 187 | |
| 188 static OrthancPluginErrorCode OnChangeCallback(OrthancPluginChangeType changeType, | |
| 189 OrthancPluginResourceType resourceType, | |
| 190 const char* resourceId) | |
| 191 { | |
| 192 try | |
| 193 { | |
| 194 if (authorizationParser_.get() == NULL) | |
| 195 { | |
| 196 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 197 } | |
| 198 | |
| 199 if (changeType == OrthancPluginChangeType_Deleted) | |
| 200 { | |
| 201 switch (resourceType) | |
| 202 { | |
| 203 case OrthancPluginResourceType_Patient: | |
| 204 authorizationParser_->Invalidate(Orthanc::ResourceType_Patient, resourceId); | |
| 205 break; | |
| 206 | |
| 207 case OrthancPluginResourceType_Study: | |
| 208 authorizationParser_->Invalidate(Orthanc::ResourceType_Study, resourceId); | |
| 209 break; | |
| 210 | |
| 211 case OrthancPluginResourceType_Series: | |
| 212 authorizationParser_->Invalidate(Orthanc::ResourceType_Series, resourceId); | |
| 213 break; | |
| 214 | |
| 215 case OrthancPluginResourceType_Instance: | |
| 216 authorizationParser_->Invalidate(Orthanc::ResourceType_Instance, resourceId); | |
| 217 break; | |
| 218 | |
| 219 default: | |
| 220 break; | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 return OrthancPluginErrorCode_Success; | |
| 225 } | |
| 226 catch (std::runtime_error& e) | |
| 227 { | |
| 228 LOG(ERROR) << e.what(); | |
| 229 return OrthancPluginErrorCode_Success; // Ignore error | |
| 230 } | |
| 231 catch (Orthanc::OrthancException& e) | |
| 232 { | |
| 233 LOG(ERROR) << e.What(); | |
| 234 return OrthancPluginErrorCode_Success; // Ignore error | |
| 235 } | |
| 236 catch (...) | |
| 237 { | |
| 238 LOG(ERROR) << "Unhandled internal exception"; | |
| 239 return OrthancPluginErrorCode_Success; // Ignore error | |
| 240 } | |
| 241 } | |
| 242 | |
| 243 | |
| 244 extern "C" | |
| 245 { | |
| 246 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context) | |
| 247 { | |
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248 OrthancPlugins::SetGlobalContext(context); |
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249 OrthancPluginLogWarning(context, "Initializing the authorization plugin"); |
| 1 | 250 |
| 251 /* Check the version of the Orthanc core */ | |
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252 if (OrthancPluginCheckVersion(context) == 0) |
| 1 | 253 { |
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254 OrthancPlugins::ReportMinimalOrthancVersion(ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER, |
| 1 | 255 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER, |
| 256 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER); | |
| 257 return -1; | |
| 258 } | |
| 259 | |
| 32 | 260 Orthanc::Logging::InitializePluginContext(context); |
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261 OrthancPluginSetDescription(context, "Advanced authorization plugin for Orthanc."); |
| 1 | 262 |
| 263 try | |
| 264 { | |
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265 OrthancPlugins::OrthancConfiguration general; |
| 1 | 266 |
| 267 static const char* SECTION = "Authorization"; | |
| 268 if (general.IsSection(SECTION)) | |
| 269 { | |
| 270 OrthancPlugins::OrthancConfiguration configuration; | |
| 271 general.GetSection(configuration, "Authorization"); | |
| 272 | |
| 273 // TODO - The size of the caches is set to 10,000 items. Maybe add a configuration option? | |
| 274 OrthancPlugins::MemoryCache::Factory factory(10000); | |
| 275 | |
| 276 { | |
| 277 std::string root; | |
| 278 | |
| 279 if (configuration.IsSection("DicomWeb")) | |
| 280 { | |
| 281 OrthancPlugins::OrthancConfiguration dicomWeb; | |
| 282 dicomWeb.GetSection(configuration, "DicomWeb"); | |
| 283 root = dicomWeb.GetStringValue("Root", ""); | |
| 284 } | |
| 285 | |
| 286 if (root.empty()) | |
| 287 { | |
| 288 root = "/dicom-web/"; | |
| 289 } | |
| 290 | |
| 291 authorizationParser_.reset | |
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292 (new OrthancPlugins::DefaultAuthorizationParser(factory, root)); |
| 1 | 293 } |
| 294 | |
| 295 std::list<std::string> tmp; | |
| 296 | |
| 297 configuration.LookupListOfStrings(tmp, "TokenHttpHeaders", true); | |
| 298 for (std::list<std::string>::const_iterator | |
| 299 it = tmp.begin(); it != tmp.end(); ++it) | |
| 300 { | |
| 301 tokens_.push_back(OrthancPlugins::Token(OrthancPlugins::TokenType_HttpHeader, *it)); | |
| 302 } | |
| 303 | |
| 304 configuration.LookupListOfStrings(tmp, "TokenGetArguments", true); | |
| 305 | |
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306 #if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 3, 0) |
| 1 | 307 for (std::list<std::string>::const_iterator |
| 308 it = tmp.begin(); it != tmp.end(); ++it) | |
| 309 { | |
| 310 tokens_.push_back(OrthancPlugins::Token(OrthancPlugins::TokenType_GetArgument, *it)); | |
| 311 } | |
| 312 #else | |
| 313 if (!tmp.empty()) | |
| 314 { | |
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315 throw Orthanc::OrthancException( |
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316 Orthanc::ErrorCode_Plugin, |
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317 "The option \"TokenGetArguments\" of the authorization plugin " |
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318 "is only valid if compiled against Orthanc >= 1.3.0" |
| 1 | 319 } |
| 320 #endif | |
| 321 | |
| 322 configuration.LookupSetOfStrings(uncheckedResources_, "UncheckedResources", false); | |
| 323 configuration.LookupListOfStrings(uncheckedFolders_, "UncheckedFolders", false); | |
| 324 | |
| 325 std::string url; | |
| 326 | |
| 327 static const char* WEB_SERVICE = "WebService"; | |
| 328 if (!configuration.LookupStringValue(url, WEB_SERVICE)) | |
| 329 { | |
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330 throw Orthanc::OrthancException( |
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331 Orthanc::ErrorCode_BadFileFormat, |
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332 "Missing mandatory option \"" + std::string(WEB_SERVICE) + |
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333 "\" for the authorization plugin"); |
| 1 | 334 } |
| 335 | |
| 336 if (configuration.LookupListOfStrings(tmp, "UncheckedLevels", false)) | |
| 337 { | |
| 338 for (std::list<std::string>::const_iterator | |
| 339 it = tmp.begin(); it != tmp.end(); ++it) | |
| 340 { | |
| 341 uncheckedLevels_.insert(OrthancPlugins::StringToAccessLevel(*it)); | |
| 342 } | |
| 343 } | |
| 344 | |
| 345 authorizationService_.reset | |
| 346 (new OrthancPlugins::CachedAuthorizationService | |
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347 (new OrthancPlugins::AuthorizationWebService(url), factory)); |
| 1 | 348 |
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349 OrthancPluginRegisterOnChangeCallback(context, OnChangeCallback); |
| 1 | 350 |
| 351 #if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 2, 1) | |
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352 OrthancPluginRegisterIncomingHttpRequestFilter2(context, FilterHttpRequests); |
| 1 | 353 #else |
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354 OrthancPluginRegisterIncomingHttpRequestFilter(context, FilterHttpRequestsFallback); |
| 1 | 355 #endif |
| 356 } | |
| 357 else | |
| 358 { | |
| 359 LOG(WARNING) << "No section \"" << SECTION << "\" in the configuration file, " | |
| 360 << "the authorization plugin is disabled"; | |
| 361 } | |
| 362 } | |
| 363 catch (Orthanc::OrthancException& e) | |
| 364 { | |
| 365 LOG(ERROR) << e.What(); | |
| 366 return -1; | |
| 367 } | |
| 368 | |
| 369 return 0; | |
| 370 } | |
| 371 | |
| 372 | |
| 373 ORTHANC_PLUGINS_API void OrthancPluginFinalize() | |
| 374 { | |
| 375 authorizationParser_.reset(NULL); | |
| 376 } | |
| 377 | |
| 378 | |
| 379 ORTHANC_PLUGINS_API const char* OrthancPluginGetName() | |
| 380 { | |
| 381 return "authorization"; | |
| 382 } | |
| 383 | |
| 384 | |
| 385 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion() | |
| 386 { | |
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387 return ORTHANC_PLUGIN_VERSION; |
| 1 | 388 } |
| 389 } |