Mercurial > hg > orthanc
annotate Core/RestApi/RestApiHierarchy.cpp @ 1961:ef1e9856c26f
New callback to filter incoming HTTP requests: OrthancPluginRegisterIncomingHttpRequestFilter()
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 07 Apr 2016 17:26:13 +0200 |
| parents | b1291df2f780 |
| children | a3a65de1840f |
| rev | line source |
|---|---|
| 969 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
| 969 | 5 * |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
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33 #include "../PrecompiledHeaders.h" |
| 969 | 34 #include "RestApiHierarchy.h" |
| 35 | |
| 975 | 36 #include "../OrthancException.h" |
| 37 | |
| 969 | 38 #include <cassert> |
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39 #include <stdio.h> |
| 969 | 40 |
| 41 namespace Orthanc | |
| 42 { | |
| 978 | 43 RestApiHierarchy::Resource::Resource() : |
| 972 | 44 getHandler_(NULL), |
| 45 postHandler_(NULL), | |
| 46 putHandler_(NULL), | |
| 47 deleteHandler_(NULL) | |
| 48 { | |
| 49 } | |
| 50 | |
| 51 | |
| 978 | 52 bool RestApiHierarchy::Resource::HasHandler(HttpMethod method) const |
| 972 | 53 { |
| 54 switch (method) | |
| 55 { | |
| 56 case HttpMethod_Get: | |
| 57 return getHandler_ != NULL; | |
| 58 | |
| 59 case HttpMethod_Post: | |
| 60 return postHandler_ != NULL; | |
| 61 | |
| 62 case HttpMethod_Put: | |
| 63 return putHandler_ != NULL; | |
| 64 | |
| 65 case HttpMethod_Delete: | |
| 66 return deleteHandler_ != NULL; | |
| 67 | |
| 68 default: | |
| 69 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 | |
| 978 | 74 bool RestApiHierarchy::Resource::IsEmpty() const |
| 969 | 75 { |
| 972 | 76 return (getHandler_ == NULL && |
| 77 postHandler_ == NULL && | |
| 78 putHandler_ == NULL && | |
| 79 deleteHandler_ == NULL); | |
| 80 } | |
| 81 | |
| 82 | |
| 969 | 83 RestApiHierarchy& RestApiHierarchy::AddChild(Children& children, |
| 84 const std::string& name) | |
| 85 { | |
| 86 Children::iterator it = children.find(name); | |
| 87 | |
| 88 if (it == children.end()) | |
| 89 { | |
| 90 // Create new child | |
| 91 RestApiHierarchy *child = new RestApiHierarchy; | |
| 92 children[name] = child; | |
| 93 return *child; | |
| 94 } | |
| 95 else | |
| 96 { | |
| 97 return *it->second; | |
| 98 } | |
| 99 } | |
| 100 | |
| 101 | |
| 978 | 102 |
| 103 bool RestApiHierarchy::Resource::Handle(RestApiGetCall& call) const | |
| 104 { | |
| 105 if (getHandler_ != NULL) | |
| 106 { | |
| 107 getHandler_(call); | |
| 108 return true; | |
| 109 } | |
| 110 else | |
| 111 { | |
| 112 return false; | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 | |
| 117 bool RestApiHierarchy::Resource::Handle(RestApiPutCall& call) const | |
| 118 { | |
| 119 if (putHandler_ != NULL) | |
| 120 { | |
| 121 putHandler_(call); | |
| 122 return true; | |
| 123 } | |
| 124 else | |
| 125 { | |
| 126 return false; | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 | |
| 131 bool RestApiHierarchy::Resource::Handle(RestApiPostCall& call) const | |
| 132 { | |
| 133 if (postHandler_ != NULL) | |
| 134 { | |
| 135 postHandler_(call); | |
| 136 return true; | |
| 137 } | |
| 138 else | |
| 139 { | |
| 140 return false; | |
| 141 } | |
| 142 } | |
| 143 | |
| 144 | |
| 145 bool RestApiHierarchy::Resource::Handle(RestApiDeleteCall& call) const | |
| 146 { | |
| 147 if (deleteHandler_ != NULL) | |
| 148 { | |
| 149 deleteHandler_(call); | |
| 150 return true; | |
| 151 } | |
| 152 else | |
| 153 { | |
| 154 return false; | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 | |
| 159 | |
| 969 | 160 void RestApiHierarchy::DeleteChildren(Children& children) |
| 161 { | |
| 162 for (Children::iterator it = children.begin(); | |
| 1303 | 163 it != children.end(); ++it) |
| 969 | 164 { |
| 165 delete it->second; | |
| 166 } | |
| 167 } | |
| 168 | |
| 169 | |
| 170 template <typename Handler> | |
| 171 void RestApiHierarchy::RegisterInternal(const RestApiPath& path, | |
| 172 Handler handler, | |
| 173 size_t level) | |
| 174 { | |
| 175 if (path.GetLevelCount() == level) | |
| 176 { | |
| 177 if (path.IsUniversalTrailing()) | |
| 178 { | |
| 179 universalHandlers_.Register(handler); | |
| 180 } | |
| 181 else | |
| 182 { | |
| 183 handlers_.Register(handler); | |
| 184 } | |
| 185 } | |
| 186 else | |
| 187 { | |
| 188 RestApiHierarchy* child; | |
| 189 if (path.IsWildcardLevel(level)) | |
| 190 { | |
| 191 child = &AddChild(wildcardChildren_, path.GetWildcardName(level)); | |
| 192 } | |
| 193 else | |
| 194 { | |
| 195 child = &AddChild(children_, path.GetLevelName(level)); | |
| 196 } | |
| 197 | |
| 198 child->RegisterInternal(path, handler, level + 1); | |
| 199 } | |
| 200 } | |
| 201 | |
| 202 | |
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203 bool RestApiHierarchy::LookupResource(IHttpHandler::Arguments& components, |
| 969 | 204 const UriComponents& uri, |
| 978 | 205 IVisitor& visitor, |
| 206 size_t level) | |
| 969 | 207 { |
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208 if (uri.size() != 0 && |
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209 level > uri.size()) |
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210 { |
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211 return false; |
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212 } |
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213 |
| 969 | 214 UriComponents trailing; |
| 215 | |
| 216 // Look for an exact match on the resource of interest | |
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217 if (uri.size() == 0 || |
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218 level == uri.size()) |
| 969 | 219 { |
| 220 if (!handlers_.IsEmpty() && | |
| 978 | 221 visitor.Visit(handlers_, uri, components, trailing)) |
| 969 | 222 { |
| 223 return true; | |
| 224 } | |
| 225 } | |
| 226 | |
| 227 | |
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228 if (level < uri.size()) // A recursive call is possible |
| 969 | 229 { |
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230 // Try and go down in the hierarchy, using an exact match for the child |
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231 Children::const_iterator child = children_.find(uri[level]); |
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232 if (child != children_.end()) |
| 969 | 233 { |
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234 if (child->second->LookupResource(components, uri, visitor, level + 1)) |
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235 { |
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236 return true; |
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237 } |
| 969 | 238 } |
| 239 | |
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240 // Try and go down in the hierarchy, using wildcard rules for children |
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241 for (child = wildcardChildren_.begin(); |
| 1303 | 242 child != wildcardChildren_.end(); ++child) |
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243 { |
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244 IHttpHandler::Arguments subComponents = components; |
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245 subComponents[child->first] = uri[level]; |
| 969 | 246 |
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247 if (child->second->LookupResource(subComponents, uri, visitor, level + 1)) |
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248 { |
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249 return true; |
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250 } |
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251 } |
| 969 | 252 } |
| 253 | |
| 254 | |
| 255 // As a last resort, call the universal handlers, if any | |
| 256 if (!universalHandlers_.IsEmpty()) | |
| 257 { | |
| 258 trailing.resize(uri.size() - level); | |
| 259 size_t pos = 0; | |
| 260 for (size_t i = level; i < uri.size(); i++, pos++) | |
| 261 { | |
| 262 trailing[pos] = uri[i]; | |
| 263 } | |
| 264 | |
| 265 assert(pos == trailing.size()); | |
| 266 | |
| 978 | 267 if (visitor.Visit(universalHandlers_, uri, components, trailing)) |
| 969 | 268 { |
| 269 return true; | |
| 270 } | |
| 271 } | |
| 272 | |
| 273 return false; | |
| 274 } | |
| 275 | |
| 276 | |
| 978 | 277 bool RestApiHierarchy::CanGenerateDirectory() const |
| 278 { | |
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279 return (universalHandlers_.IsEmpty() && |
| 1303 | 280 wildcardChildren_.empty()); |
| 978 | 281 } |
| 282 | |
| 283 | |
| 969 | 284 bool RestApiHierarchy::GetDirectory(Json::Value& result, |
| 285 const UriComponents& uri, | |
| 286 size_t level) | |
| 287 { | |
| 288 if (uri.size() == level) | |
| 289 { | |
| 978 | 290 if (CanGenerateDirectory()) |
| 969 | 291 { |
| 292 result = Json::arrayValue; | |
| 293 | |
| 294 for (Children::const_iterator it = children_.begin(); | |
| 1303 | 295 it != children_.end(); ++it) |
| 969 | 296 { |
| 297 result.append(it->first); | |
| 298 } | |
| 299 | |
| 300 return true; | |
| 301 } | |
| 302 else | |
| 303 { | |
| 304 return false; | |
| 305 } | |
| 306 } | |
| 307 | |
| 308 Children::const_iterator child = children_.find(uri[level]); | |
| 309 if (child != children_.end()) | |
| 310 { | |
| 311 if (child->second->GetDirectory(result, uri, level + 1)) | |
| 312 { | |
| 313 return true; | |
| 314 } | |
| 315 } | |
| 316 | |
| 317 for (child = wildcardChildren_.begin(); | |
| 1303 | 318 child != wildcardChildren_.end(); ++child) |
| 969 | 319 { |
| 320 if (child->second->GetDirectory(result, uri, level + 1)) | |
| 321 { | |
| 322 return true; | |
| 323 } | |
| 324 } | |
| 325 | |
| 326 return false; | |
| 327 } | |
| 328 | |
| 329 | |
| 330 RestApiHierarchy::~RestApiHierarchy() | |
| 331 { | |
| 332 DeleteChildren(children_); | |
| 333 DeleteChildren(wildcardChildren_); | |
| 334 } | |
| 335 | |
| 970 | 336 void RestApiHierarchy::Register(const std::string& uri, |
| 974 | 337 RestApiGetCall::Handler handler) |
| 969 | 338 { |
| 970 | 339 RestApiPath path(uri); |
| 969 | 340 RegisterInternal(path, handler, 0); |
| 341 } | |
| 342 | |
| 970 | 343 void RestApiHierarchy::Register(const std::string& uri, |
| 974 | 344 RestApiPutCall::Handler handler) |
| 969 | 345 { |
| 970 | 346 RestApiPath path(uri); |
| 969 | 347 RegisterInternal(path, handler, 0); |
| 348 } | |
| 349 | |
| 970 | 350 void RestApiHierarchy::Register(const std::string& uri, |
| 974 | 351 RestApiPostCall::Handler handler) |
| 969 | 352 { |
| 970 | 353 RestApiPath path(uri); |
| 969 | 354 RegisterInternal(path, handler, 0); |
| 355 } | |
| 356 | |
| 970 | 357 void RestApiHierarchy::Register(const std::string& uri, |
| 974 | 358 RestApiDeleteCall::Handler handler) |
| 969 | 359 { |
| 970 | 360 RestApiPath path(uri); |
| 969 | 361 RegisterInternal(path, handler, 0); |
| 362 } | |
| 363 | |
| 364 void RestApiHierarchy::CreateSiteMap(Json::Value& target) const | |
| 365 { | |
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366 target = Json::objectValue; |
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367 |
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368 /*std::string s = " "; |
| 972 | 369 if (handlers_.HasHandler(HttpMethod_Get)) |
| 969 | 370 { |
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371 s += "GET "; |
| 969 | 372 } |
| 373 | |
| 972 | 374 if (handlers_.HasHandler(HttpMethod_Post)) |
| 969 | 375 { |
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376 s += "POST "; |
| 969 | 377 } |
| 378 | |
| 972 | 379 if (handlers_.HasHandler(HttpMethod_Put)) |
| 969 | 380 { |
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381 s += "PUT "; |
| 969 | 382 } |
| 383 | |
| 972 | 384 if (handlers_.HasHandler(HttpMethod_Delete)) |
| 969 | 385 { |
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386 s += "DELETE "; |
| 969 | 387 } |
| 388 | |
| 978 | 389 target = s;*/ |
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390 |
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391 for (Children::const_iterator it = children_.begin(); |
| 1303 | 392 it != children_.end(); ++it) |
| 969 | 393 { |
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394 it->second->CreateSiteMap(target[it->first]); |
| 969 | 395 } |
| 396 | |
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397 for (Children::const_iterator it = wildcardChildren_.begin(); |
| 1303 | 398 it != wildcardChildren_.end(); ++it) |
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399 { |
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400 it->second->CreateSiteMap(target["<" + it->first + ">"]); |
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401 } |
| 969 | 402 } |
| 403 | |
| 978 | 404 |
| 405 bool RestApiHierarchy::LookupResource(const UriComponents& uri, | |
| 406 IVisitor& visitor) | |
| 969 | 407 { |
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408 IHttpHandler::Arguments components; |
| 978 | 409 return LookupResource(components, uri, visitor, 0); |
| 969 | 410 } |
| 411 | |
| 978 | 412 |
| 413 | |
| 414 namespace | |
| 415 { | |
| 416 // Anonymous namespace to avoid clashes between compilation modules | |
| 417 | |
| 418 class AcceptedMethodsVisitor : public RestApiHierarchy::IVisitor | |
| 419 { | |
| 420 private: | |
| 421 std::set<HttpMethod>& methods_; | |
| 422 | |
| 423 public: | |
| 424 AcceptedMethodsVisitor(std::set<HttpMethod>& methods) : methods_(methods) | |
| 425 { | |
| 426 } | |
| 427 | |
| 428 virtual bool Visit(const RestApiHierarchy::Resource& resource, | |
| 429 const UriComponents& uri, | |
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430 const IHttpHandler::Arguments& components, |
| 978 | 431 const UriComponents& trailing) |
| 432 { | |
| 433 if (trailing.size() == 0) // Ignore universal handlers | |
| 434 { | |
| 435 if (resource.HasHandler(HttpMethod_Get)) | |
| 436 { | |
| 437 methods_.insert(HttpMethod_Get); | |
| 438 } | |
| 439 | |
| 440 if (resource.HasHandler(HttpMethod_Post)) | |
| 441 { | |
| 442 methods_.insert(HttpMethod_Post); | |
| 443 } | |
| 444 | |
| 445 if (resource.HasHandler(HttpMethod_Put)) | |
| 446 { | |
| 447 methods_.insert(HttpMethod_Put); | |
| 448 } | |
| 449 | |
| 450 if (resource.HasHandler(HttpMethod_Delete)) | |
| 451 { | |
| 452 methods_.insert(HttpMethod_Delete); | |
| 453 } | |
| 454 } | |
| 455 | |
| 456 return false; // Continue to check all the possible ways to access this URI | |
| 457 } | |
| 458 }; | |
| 459 } | |
| 460 | |
| 461 void RestApiHierarchy::GetAcceptedMethods(std::set<HttpMethod>& methods, | |
| 462 const UriComponents& uri) | |
| 969 | 463 { |
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464 IHttpHandler::Arguments components; |
| 978 | 465 AcceptedMethodsVisitor visitor(methods); |
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parents:
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466 if (LookupResource(components, uri, visitor, 0)) |
| 978 | 467 { |
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parents:
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468 Json::Value d; |
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refactoring: OrthancHttpHandler inside OrthancServer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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469 if (GetDirectory(d, uri)) |
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b2b09a3dbd8e
refactoring: OrthancHttpHandler inside OrthancServer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1441
diff
changeset
|
470 { |
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b2b09a3dbd8e
refactoring: OrthancHttpHandler inside OrthancServer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1441
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changeset
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471 methods.insert(HttpMethod_Get); |
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refactoring: OrthancHttpHandler inside OrthancServer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1441
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changeset
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472 } |
| 978 | 473 } |
| 474 } | |
| 969 | 475 } |