Mercurial > hg > orthanc
annotate OrthancFramework/Sources/RestApi/RestApiHierarchy.cpp @ 4302:4c91fbede7d2
missing macro CIVETWEB_KEEP_ALIVE_TIMEOUT_SECONDS
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 06 Nov 2020 10:00:05 +0100 |
parents | b30a8de92ad9 |
children | 44b53a2c0a13 |
rev | line source |
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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 |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
969 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
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8 * modify it under the terms of the GNU Lesser General Public License |
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9 * as published by the Free Software Foundation, either version 3 of |
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10 * the License, or (at your option) any later version. |
969 | 11 * |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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15 * Lesser General Public License for more details. |
969 | 16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
969 | 20 **/ |
21 | |
22 | |
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23 #include "../PrecompiledHeaders.h" |
969 | 24 #include "RestApiHierarchy.h" |
25 | |
975 | 26 #include "../OrthancException.h" |
27 | |
969 | 28 #include <cassert> |
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29 #include <stdio.h> |
969 | 30 |
31 namespace Orthanc | |
32 { | |
978 | 33 RestApiHierarchy::Resource::Resource() : |
972 | 34 getHandler_(NULL), |
35 postHandler_(NULL), | |
36 putHandler_(NULL), | |
37 deleteHandler_(NULL) | |
38 { | |
39 } | |
40 | |
41 | |
978 | 42 bool RestApiHierarchy::Resource::HasHandler(HttpMethod method) const |
972 | 43 { |
44 switch (method) | |
45 { | |
46 case HttpMethod_Get: | |
47 return getHandler_ != NULL; | |
48 | |
49 case HttpMethod_Post: | |
50 return postHandler_ != NULL; | |
51 | |
52 case HttpMethod_Put: | |
53 return putHandler_ != NULL; | |
54 | |
55 case HttpMethod_Delete: | |
56 return deleteHandler_ != NULL; | |
57 | |
58 default: | |
59 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
60 } | |
61 } | |
62 | |
63 | |
4300 | 64 void RestApiHierarchy::Resource::Register(RestApiGetCall::Handler handler) |
65 { | |
66 getHandler_ = handler; | |
67 } | |
68 | |
69 void RestApiHierarchy::Resource::Register(RestApiPutCall::Handler handler) | |
70 { | |
71 putHandler_ = handler; | |
72 } | |
73 | |
74 void RestApiHierarchy::Resource::Register(RestApiPostCall::Handler handler) | |
75 { | |
76 postHandler_ = handler; | |
77 } | |
78 | |
79 void RestApiHierarchy::Resource::Register(RestApiDeleteCall::Handler handler) | |
80 { | |
81 deleteHandler_ = handler; | |
82 } | |
83 | |
84 | |
978 | 85 bool RestApiHierarchy::Resource::IsEmpty() const |
969 | 86 { |
972 | 87 return (getHandler_ == NULL && |
88 postHandler_ == NULL && | |
89 putHandler_ == NULL && | |
90 deleteHandler_ == NULL); | |
91 } | |
92 | |
93 | |
969 | 94 RestApiHierarchy& RestApiHierarchy::AddChild(Children& children, |
95 const std::string& name) | |
96 { | |
97 Children::iterator it = children.find(name); | |
98 | |
99 if (it == children.end()) | |
100 { | |
101 // Create new child | |
102 RestApiHierarchy *child = new RestApiHierarchy; | |
103 children[name] = child; | |
104 return *child; | |
105 } | |
106 else | |
107 { | |
108 return *it->second; | |
109 } | |
110 } | |
111 | |
112 | |
978 | 113 |
114 bool RestApiHierarchy::Resource::Handle(RestApiGetCall& call) const | |
115 { | |
116 if (getHandler_ != NULL) | |
117 { | |
118 getHandler_(call); | |
119 return true; | |
120 } | |
121 else | |
122 { | |
123 return false; | |
124 } | |
125 } | |
126 | |
127 | |
128 bool RestApiHierarchy::Resource::Handle(RestApiPutCall& call) const | |
129 { | |
130 if (putHandler_ != NULL) | |
131 { | |
132 putHandler_(call); | |
133 return true; | |
134 } | |
135 else | |
136 { | |
137 return false; | |
138 } | |
139 } | |
140 | |
141 | |
142 bool RestApiHierarchy::Resource::Handle(RestApiPostCall& call) const | |
143 { | |
144 if (postHandler_ != NULL) | |
145 { | |
146 postHandler_(call); | |
147 return true; | |
148 } | |
149 else | |
150 { | |
151 return false; | |
152 } | |
153 } | |
154 | |
155 | |
156 bool RestApiHierarchy::Resource::Handle(RestApiDeleteCall& call) const | |
157 { | |
158 if (deleteHandler_ != NULL) | |
159 { | |
160 deleteHandler_(call); | |
161 return true; | |
162 } | |
163 else | |
164 { | |
165 return false; | |
166 } | |
167 } | |
168 | |
169 | |
4300 | 170 RestApiHierarchy::IVisitor::~IVisitor() |
171 { | |
172 } | |
173 | |
978 | 174 |
969 | 175 void RestApiHierarchy::DeleteChildren(Children& children) |
176 { | |
177 for (Children::iterator it = children.begin(); | |
1303 | 178 it != children.end(); ++it) |
969 | 179 { |
180 delete it->second; | |
181 } | |
182 } | |
183 | |
184 | |
185 template <typename Handler> | |
186 void RestApiHierarchy::RegisterInternal(const RestApiPath& path, | |
187 Handler handler, | |
188 size_t level) | |
189 { | |
190 if (path.GetLevelCount() == level) | |
191 { | |
192 if (path.IsUniversalTrailing()) | |
193 { | |
194 universalHandlers_.Register(handler); | |
195 } | |
196 else | |
197 { | |
198 handlers_.Register(handler); | |
199 } | |
200 } | |
201 else | |
202 { | |
203 RestApiHierarchy* child; | |
204 if (path.IsWildcardLevel(level)) | |
205 { | |
206 child = &AddChild(wildcardChildren_, path.GetWildcardName(level)); | |
207 } | |
208 else | |
209 { | |
210 child = &AddChild(children_, path.GetLevelName(level)); | |
211 } | |
212 | |
213 child->RegisterInternal(path, handler, level + 1); | |
214 } | |
215 } | |
216 | |
217 | |
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218 bool RestApiHierarchy::LookupResource(IHttpHandler::Arguments& components, |
969 | 219 const UriComponents& uri, |
978 | 220 IVisitor& visitor, |
221 size_t level) | |
969 | 222 { |
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223 if (uri.size() != 0 && |
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224 level > uri.size()) |
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225 { |
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226 return false; |
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227 } |
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228 |
969 | 229 UriComponents trailing; |
230 | |
231 // Look for an exact match on the resource of interest | |
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232 if (uri.size() == 0 || |
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233 level == uri.size()) |
969 | 234 { |
235 if (!handlers_.IsEmpty() && | |
978 | 236 visitor.Visit(handlers_, uri, components, trailing)) |
969 | 237 { |
238 return true; | |
239 } | |
240 } | |
241 | |
242 | |
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243 if (level < uri.size()) // A recursive call is possible |
969 | 244 { |
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245 // Try and go down in the hierarchy, using an exact match for the child |
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246 Children::const_iterator child = children_.find(uri[level]); |
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247 if (child != children_.end()) |
969 | 248 { |
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249 if (child->second->LookupResource(components, uri, visitor, level + 1)) |
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250 { |
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251 return true; |
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252 } |
969 | 253 } |
254 | |
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255 // Try and go down in the hierarchy, using wildcard rules for children |
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256 for (child = wildcardChildren_.begin(); |
1303 | 257 child != wildcardChildren_.end(); ++child) |
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258 { |
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259 IHttpHandler::Arguments subComponents = components; |
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260 subComponents[child->first] = uri[level]; |
969 | 261 |
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262 if (child->second->LookupResource(subComponents, uri, visitor, level + 1)) |
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263 { |
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264 return true; |
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265 } |
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266 } |
969 | 267 } |
268 | |
269 | |
270 // As a last resort, call the universal handlers, if any | |
271 if (!universalHandlers_.IsEmpty()) | |
272 { | |
273 trailing.resize(uri.size() - level); | |
274 size_t pos = 0; | |
275 for (size_t i = level; i < uri.size(); i++, pos++) | |
276 { | |
277 trailing[pos] = uri[i]; | |
278 } | |
279 | |
280 assert(pos == trailing.size()); | |
281 | |
978 | 282 if (visitor.Visit(universalHandlers_, uri, components, trailing)) |
969 | 283 { |
284 return true; | |
285 } | |
286 } | |
287 | |
288 return false; | |
289 } | |
290 | |
291 | |
978 | 292 bool RestApiHierarchy::CanGenerateDirectory() const |
293 { | |
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294 return (universalHandlers_.IsEmpty() && |
1303 | 295 wildcardChildren_.empty()); |
978 | 296 } |
297 | |
298 | |
969 | 299 bool RestApiHierarchy::GetDirectory(Json::Value& result, |
300 const UriComponents& uri, | |
301 size_t level) | |
302 { | |
303 if (uri.size() == level) | |
304 { | |
978 | 305 if (CanGenerateDirectory()) |
969 | 306 { |
307 result = Json::arrayValue; | |
308 | |
309 for (Children::const_iterator it = children_.begin(); | |
1303 | 310 it != children_.end(); ++it) |
969 | 311 { |
312 result.append(it->first); | |
313 } | |
314 | |
315 return true; | |
316 } | |
317 else | |
318 { | |
319 return false; | |
320 } | |
321 } | |
322 | |
323 Children::const_iterator child = children_.find(uri[level]); | |
324 if (child != children_.end()) | |
325 { | |
326 if (child->second->GetDirectory(result, uri, level + 1)) | |
327 { | |
328 return true; | |
329 } | |
330 } | |
331 | |
332 for (child = wildcardChildren_.begin(); | |
1303 | 333 child != wildcardChildren_.end(); ++child) |
969 | 334 { |
335 if (child->second->GetDirectory(result, uri, level + 1)) | |
336 { | |
337 return true; | |
338 } | |
339 } | |
340 | |
341 return false; | |
342 } | |
343 | |
344 | |
345 RestApiHierarchy::~RestApiHierarchy() | |
346 { | |
347 DeleteChildren(children_); | |
348 DeleteChildren(wildcardChildren_); | |
349 } | |
350 | |
970 | 351 void RestApiHierarchy::Register(const std::string& uri, |
974 | 352 RestApiGetCall::Handler handler) |
969 | 353 { |
970 | 354 RestApiPath path(uri); |
969 | 355 RegisterInternal(path, handler, 0); |
356 } | |
357 | |
970 | 358 void RestApiHierarchy::Register(const std::string& uri, |
974 | 359 RestApiPutCall::Handler handler) |
969 | 360 { |
970 | 361 RestApiPath path(uri); |
969 | 362 RegisterInternal(path, handler, 0); |
363 } | |
364 | |
970 | 365 void RestApiHierarchy::Register(const std::string& uri, |
974 | 366 RestApiPostCall::Handler handler) |
969 | 367 { |
970 | 368 RestApiPath path(uri); |
969 | 369 RegisterInternal(path, handler, 0); |
370 } | |
371 | |
970 | 372 void RestApiHierarchy::Register(const std::string& uri, |
974 | 373 RestApiDeleteCall::Handler handler) |
969 | 374 { |
970 | 375 RestApiPath path(uri); |
969 | 376 RegisterInternal(path, handler, 0); |
377 } | |
378 | |
379 void RestApiHierarchy::CreateSiteMap(Json::Value& target) const | |
380 { | |
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381 target = Json::objectValue; |
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382 |
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383 /*std::string s = " "; |
972 | 384 if (handlers_.HasHandler(HttpMethod_Get)) |
969 | 385 { |
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386 s += "GET "; |
969 | 387 } |
388 | |
972 | 389 if (handlers_.HasHandler(HttpMethod_Post)) |
969 | 390 { |
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391 s += "POST "; |
969 | 392 } |
393 | |
972 | 394 if (handlers_.HasHandler(HttpMethod_Put)) |
969 | 395 { |
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396 s += "PUT "; |
969 | 397 } |
398 | |
972 | 399 if (handlers_.HasHandler(HttpMethod_Delete)) |
969 | 400 { |
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401 s += "DELETE "; |
969 | 402 } |
403 | |
978 | 404 target = s;*/ |
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406 for (Children::const_iterator it = children_.begin(); |
1303 | 407 it != children_.end(); ++it) |
969 | 408 { |
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409 it->second->CreateSiteMap(target[it->first]); |
969 | 410 } |
411 | |
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412 for (Children::const_iterator it = wildcardChildren_.begin(); |
1303 | 413 it != wildcardChildren_.end(); ++it) |
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414 { |
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415 it->second->CreateSiteMap(target["<" + it->first + ">"]); |
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416 } |
969 | 417 } |
418 | |
4300 | 419 bool RestApiHierarchy::GetDirectory(Json::Value &result, const UriComponents &uri) |
420 { | |
421 return GetDirectory(result, uri, 0); | |
422 } | |
423 | |
978 | 424 |
425 bool RestApiHierarchy::LookupResource(const UriComponents& uri, | |
426 IVisitor& visitor) | |
969 | 427 { |
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428 IHttpHandler::Arguments components; |
978 | 429 return LookupResource(components, uri, visitor, 0); |
969 | 430 } |
431 | |
978 | 432 |
433 | |
434 namespace | |
435 { | |
436 // Anonymous namespace to avoid clashes between compilation modules | |
437 | |
438 class AcceptedMethodsVisitor : public RestApiHierarchy::IVisitor | |
439 { | |
440 private: | |
441 std::set<HttpMethod>& methods_; | |
442 | |
443 public: | |
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444 explicit AcceptedMethodsVisitor(std::set<HttpMethod>& methods) : |
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445 methods_(methods) |
978 | 446 { |
447 } | |
448 | |
449 virtual bool Visit(const RestApiHierarchy::Resource& resource, | |
450 const UriComponents& uri, | |
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451 const IHttpHandler::Arguments& components, |
978 | 452 const UriComponents& trailing) |
453 { | |
454 if (trailing.size() == 0) // Ignore universal handlers | |
455 { | |
456 if (resource.HasHandler(HttpMethod_Get)) | |
457 { | |
458 methods_.insert(HttpMethod_Get); | |
459 } | |
460 | |
461 if (resource.HasHandler(HttpMethod_Post)) | |
462 { | |
463 methods_.insert(HttpMethod_Post); | |
464 } | |
465 | |
466 if (resource.HasHandler(HttpMethod_Put)) | |
467 { | |
468 methods_.insert(HttpMethod_Put); | |
469 } | |
470 | |
471 if (resource.HasHandler(HttpMethod_Delete)) | |
472 { | |
473 methods_.insert(HttpMethod_Delete); | |
474 } | |
475 } | |
476 | |
477 return false; // Continue to check all the possible ways to access this URI | |
478 } | |
479 }; | |
480 } | |
481 | |
482 void RestApiHierarchy::GetAcceptedMethods(std::set<HttpMethod>& methods, | |
483 const UriComponents& uri) | |
969 | 484 { |
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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485 IHttpHandler::Arguments components; |
978 | 486 AcceptedMethodsVisitor visitor(methods); |
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parents:
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487 if (LookupResource(components, uri, visitor, 0)) |
978 | 488 { |
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parents:
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489 Json::Value d; |
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refactoring: OrthancHttpHandler inside OrthancServer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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490 if (GetDirectory(d, uri)) |
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refactoring: OrthancHttpHandler inside OrthancServer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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491 { |
b2b09a3dbd8e
refactoring: OrthancHttpHandler inside OrthancServer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1441
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492 methods.insert(HttpMethod_Get); |
b2b09a3dbd8e
refactoring: OrthancHttpHandler inside OrthancServer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1441
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493 } |
978 | 494 } |
495 } | |
4300 | 496 |
969 | 497 } |