Mercurial > hg > orthanc
annotate Core/HttpServer/MongooseServer.cpp @ 108:a6e41de88a53
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 04 Oct 2012 11:37:56 +0200 |
| parents | c996319e90bc |
| children | 2a24f43d9dca |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 59 | 2 * Orthanc - A Lightweight, RESTful DICOM Store |
| 0 | 3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege, |
| 4 * Belgium | |
| 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 * This program is distributed in the hope that it will be useful, but | |
| 12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU General Public License | |
| 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 **/ | |
| 19 | |
| 20 | |
| 21 // http://en.highscore.de/cpp/boost/stringhandling.html | |
| 22 | |
| 23 #include "MongooseServer.h" | |
| 24 | |
| 25 #include <algorithm> | |
| 26 #include <string.h> | |
| 27 #include <boost/lexical_cast.hpp> | |
| 28 #include <boost/algorithm/string.hpp> | |
| 29 #include <iostream> | |
| 30 #include <string.h> | |
| 31 #include <stdio.h> | |
| 32 #include <boost/thread.hpp> | |
| 108 | 33 #include <glog/logging.h> |
| 0 | 34 |
| 59 | 35 #include "../OrthancException.h" |
| 0 | 36 #include "../ChunkedBuffer.h" |
| 37 #include "mongoose.h" | |
| 38 | |
| 39 | |
| 59 | 40 #define ORTHANC_REALM "Orthanc Secure Area" |
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41 |
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42 static const long LOCALHOST = (127ll << 24) + 1ll; |
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43 |
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44 |
| 59 | 45 namespace Orthanc |
| 0 | 46 { |
| 47 static const char multipart[] = "multipart/form-data; boundary="; | |
| 48 static unsigned int multipartLength = sizeof(multipart) / sizeof(char) - 1; | |
| 49 | |
| 50 | |
| 51 namespace | |
| 52 { | |
| 53 // Anonymous namespace to avoid clashes between compilation modules | |
| 54 class MongooseOutput : public HttpOutput | |
| 55 { | |
| 56 private: | |
| 57 struct mg_connection* connection_; | |
| 58 | |
| 59 public: | |
| 60 MongooseOutput(struct mg_connection* connection) : connection_(connection) | |
| 61 { | |
| 62 } | |
| 63 | |
| 64 virtual void Send(const void* buffer, size_t length) | |
| 65 { | |
| 66 mg_write(connection_, buffer, length); | |
| 67 } | |
| 68 }; | |
| 69 | |
| 70 | |
| 71 enum PostDataStatus | |
| 72 { | |
| 73 PostDataStatus_Success, | |
| 74 PostDataStatus_NoLength, | |
| 75 PostDataStatus_Pending, | |
| 76 PostDataStatus_Failure | |
| 77 }; | |
| 78 } | |
| 79 | |
| 80 | |
| 81 // TODO Move this to external file | |
| 82 | |
| 83 | |
| 84 class ChunkedFile : public ChunkedBuffer | |
| 85 { | |
| 86 private: | |
| 87 std::string filename_; | |
| 88 | |
| 89 public: | |
| 90 ChunkedFile(const std::string& filename) : | |
| 91 filename_(filename) | |
| 92 { | |
| 93 } | |
| 94 | |
| 95 const std::string& GetFilename() const | |
| 96 { | |
| 97 return filename_; | |
| 98 } | |
| 99 }; | |
| 100 | |
| 101 | |
| 102 | |
| 103 class ChunkStore | |
| 104 { | |
| 105 private: | |
| 106 typedef std::list<ChunkedFile*> Content; | |
| 107 Content content_; | |
| 108 unsigned int numPlaces_; | |
| 109 | |
| 110 boost::mutex mutex_; | |
| 111 std::set<std::string> discardedFiles_; | |
| 112 | |
| 113 void Clear() | |
| 114 { | |
| 115 for (Content::iterator it = content_.begin(); | |
| 116 it != content_.end(); it++) | |
| 117 { | |
| 118 delete *it; | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 Content::iterator Find(const std::string& filename) | |
| 123 { | |
| 124 for (Content::iterator it = content_.begin(); | |
| 125 it != content_.end(); it++) | |
| 126 { | |
| 127 if ((*it)->GetFilename() == filename) | |
| 128 { | |
| 129 return it; | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 return content_.end(); | |
| 134 } | |
| 135 | |
| 136 void Remove(const std::string& filename) | |
| 137 { | |
| 138 Content::iterator it = Find(filename); | |
| 139 if (it != content_.end()) | |
| 140 { | |
| 141 delete *it; | |
| 142 content_.erase(it); | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 public: | |
| 147 ChunkStore() | |
| 148 { | |
| 149 numPlaces_ = 10; | |
| 150 } | |
| 151 | |
| 152 ~ChunkStore() | |
| 153 { | |
| 154 Clear(); | |
| 155 } | |
| 156 | |
| 157 PostDataStatus Store(std::string& completed, | |
| 158 const char* chunkData, | |
| 159 size_t chunkSize, | |
| 160 const std::string& filename, | |
| 161 size_t filesize) | |
| 162 { | |
| 163 boost::mutex::scoped_lock lock(mutex_); | |
| 164 | |
| 165 std::set<std::string>::iterator wasDiscarded = discardedFiles_.find(filename); | |
| 166 if (wasDiscarded != discardedFiles_.end()) | |
| 167 { | |
| 168 discardedFiles_.erase(wasDiscarded); | |
| 169 return PostDataStatus_Failure; | |
| 170 } | |
| 171 | |
| 172 ChunkedFile* f; | |
| 173 Content::iterator it = Find(filename); | |
| 174 if (it == content_.end()) | |
| 175 { | |
| 176 f = new ChunkedFile(filename); | |
| 177 | |
| 178 // Make some room | |
| 179 if (content_.size() >= numPlaces_) | |
| 180 { | |
| 181 discardedFiles_.insert(content_.front()->GetFilename()); | |
| 182 delete content_.front(); | |
| 183 content_.pop_front(); | |
| 184 } | |
| 185 | |
| 186 content_.push_back(f); | |
| 187 } | |
| 188 else | |
| 189 { | |
| 190 f = *it; | |
| 191 } | |
| 192 | |
| 193 f->AddChunk(chunkData, chunkSize); | |
| 194 | |
| 195 if (f->GetNumBytes() > filesize) | |
| 196 { | |
| 197 Remove(filename); | |
| 198 } | |
| 199 else if (f->GetNumBytes() == filesize) | |
| 200 { | |
| 201 f->Flatten(completed); | |
| 202 Remove(filename); | |
| 203 return PostDataStatus_Success; | |
| 204 } | |
| 205 | |
| 206 return PostDataStatus_Pending; | |
| 207 } | |
| 208 | |
| 209 /*void Print() | |
| 210 { | |
| 211 boost::mutex::scoped_lock lock(mutex_); | |
| 212 | |
| 213 printf("ChunkStore status:\n"); | |
| 214 for (Content::const_iterator i = content_.begin(); | |
| 215 i != content_.end(); i++) | |
| 216 { | |
| 217 printf(" [%s]: %d\n", (*i)->GetFilename().c_str(), (*i)->GetNumBytes()); | |
| 218 } | |
| 219 printf("-----\n"); | |
| 220 }*/ | |
| 221 }; | |
| 222 | |
| 223 | |
| 224 struct MongooseServer::PImpl | |
| 225 { | |
| 226 struct mg_context *context_; | |
| 227 ChunkStore chunkStore_; | |
| 228 }; | |
| 229 | |
| 230 | |
| 231 ChunkStore& MongooseServer::GetChunkStore() | |
| 232 { | |
| 233 return pimpl_->chunkStore_; | |
| 234 } | |
| 235 | |
| 236 | |
| 237 | |
| 238 HttpHandler* MongooseServer::FindHandler(const UriComponents& forUri) const | |
| 239 { | |
| 240 for (Handlers::const_iterator it = | |
| 241 handlers_.begin(); it != handlers_.end(); it++) | |
| 242 { | |
| 243 if ((*it)->IsServedUri(forUri)) | |
| 244 { | |
| 245 return *it; | |
| 246 } | |
| 247 } | |
| 248 | |
| 249 return NULL; | |
| 250 } | |
| 251 | |
| 252 | |
| 253 | |
| 254 | |
| 255 static PostDataStatus ReadPostData(std::string& postData, | |
| 256 struct mg_connection *connection, | |
| 257 const HttpHandler::Arguments& headers) | |
| 258 { | |
| 259 HttpHandler::Arguments::const_iterator cs = headers.find("content-length"); | |
| 260 if (cs == headers.end()) | |
| 261 { | |
| 262 return PostDataStatus_NoLength; | |
| 263 } | |
| 264 | |
| 265 int length; | |
| 266 try | |
| 267 { | |
| 268 length = boost::lexical_cast<int>(cs->second); | |
| 269 } | |
| 270 catch (boost::bad_lexical_cast) | |
| 271 { | |
| 272 return PostDataStatus_NoLength; | |
| 273 } | |
| 274 | |
| 275 if (length < 0) | |
| 276 { | |
| 277 length = 0; | |
| 278 } | |
| 279 | |
| 280 postData.resize(length); | |
| 281 | |
| 282 size_t pos = 0; | |
| 283 while (length > 0) | |
| 284 { | |
| 285 int r = mg_read(connection, &postData[pos], length); | |
| 286 if (r <= 0) | |
| 287 { | |
| 288 return PostDataStatus_Failure; | |
| 289 } | |
| 8 | 290 assert(r <= length); |
| 0 | 291 length -= r; |
| 292 pos += r; | |
| 293 } | |
| 294 | |
| 295 return PostDataStatus_Success; | |
| 296 } | |
| 297 | |
| 298 | |
| 299 | |
| 300 static PostDataStatus ParseMultipartPost(std::string &completedFile, | |
| 301 struct mg_connection *connection, | |
| 302 const HttpHandler::Arguments& headers, | |
| 303 const std::string& contentType, | |
| 304 ChunkStore& chunkStore) | |
| 305 { | |
| 306 std::string boundary = "--" + contentType.substr(multipartLength); | |
| 307 | |
| 308 std::string postData; | |
| 309 PostDataStatus status = ReadPostData(postData, connection, headers); | |
| 310 | |
| 311 if (status != PostDataStatus_Success) | |
| 312 { | |
| 313 return status; | |
| 314 } | |
| 315 | |
| 316 /*for (HttpHandler::Arguments::const_iterator i = headers.begin(); i != headers.end(); i++) | |
| 317 { | |
| 318 std::cout << "Header [" << i->first << "] = " << i->second << "\n"; | |
| 319 } | |
| 320 printf("CHUNK\n");*/ | |
| 321 | |
| 322 typedef HttpHandler::Arguments::const_iterator ArgumentIterator; | |
| 323 | |
| 324 ArgumentIterator requestedWith = headers.find("x-requested-with"); | |
| 325 ArgumentIterator fileName = headers.find("x-file-name"); | |
| 326 ArgumentIterator fileSizeStr = headers.find("x-file-size"); | |
| 327 | |
| 328 if (requestedWith == headers.end() || | |
| 329 requestedWith->second != "XMLHttpRequest") | |
| 330 { | |
| 331 return PostDataStatus_Failure; | |
| 332 } | |
| 333 | |
| 334 size_t fileSize = 0; | |
| 335 if (fileSizeStr != headers.end()) | |
| 336 { | |
| 337 try | |
| 338 { | |
| 339 fileSize = boost::lexical_cast<size_t>(fileSizeStr->second); | |
| 340 } | |
| 341 catch (boost::bad_lexical_cast) | |
| 342 { | |
| 343 return PostDataStatus_Failure; | |
| 344 } | |
| 345 } | |
| 346 | |
| 347 typedef boost::find_iterator<std::string::iterator> FindIterator; | |
| 10 | 348 typedef boost::iterator_range<char*> Range; |
| 0 | 349 |
| 350 //chunkStore.Print(); | |
| 351 | |
| 352 try | |
| 353 { | |
| 354 FindIterator last; | |
| 355 for (FindIterator it = | |
| 356 make_find_iterator(postData, boost::first_finder(boundary)); | |
| 357 it!=FindIterator(); | |
| 358 ++it) | |
| 359 { | |
| 360 if (last != FindIterator()) | |
| 361 { | |
| 10 | 362 Range part(&last->back(), &it->front()); |
| 0 | 363 Range content = boost::find_first(part, "\r\n\r\n"); |
| 364 if (content != Range()) | |
| 365 { | |
| 366 Range c(&content.back() + 1, &it->front() - 2); | |
| 367 size_t chunkSize = c.size(); | |
| 368 | |
| 369 if (chunkSize > 0) | |
| 370 { | |
| 371 const char* chunkData = &c.front(); | |
| 372 | |
| 373 if (fileName == headers.end()) | |
| 374 { | |
| 375 // This file is stored in a single chunk | |
| 376 completedFile.resize(chunkSize); | |
| 377 if (chunkSize > 0) | |
| 378 { | |
| 379 memcpy(&completedFile[0], chunkData, chunkSize); | |
| 380 } | |
| 381 return PostDataStatus_Success; | |
| 382 } | |
| 383 else | |
| 384 { | |
| 385 return chunkStore.Store(completedFile, chunkData, chunkSize, fileName->second, fileSize); | |
| 386 } | |
| 387 } | |
| 10 | 388 } |
| 0 | 389 } |
| 390 | |
| 391 last = it; | |
| 392 } | |
| 393 } | |
| 394 catch (std::length_error) | |
| 395 { | |
| 396 return PostDataStatus_Failure; | |
| 397 } | |
| 398 | |
| 399 return PostDataStatus_Pending; | |
| 400 } | |
| 401 | |
| 402 | |
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403 static void SendUnauthorized(HttpOutput& output) |
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404 { |
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405 std::string s = "HTTP/1.1 401 Unauthorized\r\n" |
| 59 | 406 "WWW-Authenticate: Basic realm=\"" ORTHANC_REALM "\"" |
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407 "\r\n\r\n"; |
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408 output.Send(&s[0], s.size()); |
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409 } |
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410 |
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411 |
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412 static bool Authorize(const MongooseServer& that, |
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413 const HttpHandler::Arguments& headers, |
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414 HttpOutput& output) |
| 23 | 415 { |
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416 bool granted = false; |
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417 |
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418 HttpHandler::Arguments::const_iterator auth = headers.find("authorization"); |
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419 if (auth != headers.end()) |
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420 { |
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421 std::string s = auth->second; |
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422 if (s.substr(0, 6) == "Basic ") |
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423 { |
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424 std::string b64 = s.substr(6); |
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425 granted = that.IsValidBasicHttpAuthentication(b64); |
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426 } |
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427 } |
| 23 | 428 |
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429 if (!granted) |
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430 { |
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431 SendUnauthorized(output); |
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432 return false; |
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433 } |
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434 else |
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435 { |
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436 return true; |
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437 } |
| 23 | 438 } |
| 439 | |
| 440 | |
| 0 | 441 |
| 442 static void* Callback(enum mg_event event, | |
| 443 struct mg_connection *connection, | |
| 444 const struct mg_request_info *request) | |
| 445 { | |
| 446 if (event == MG_NEW_REQUEST) | |
| 447 { | |
| 448 MongooseServer* that = (MongooseServer*) (request->user_data); | |
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449 MongooseOutput output(connection); |
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450 |
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451 if (!that->IsRemoteAccessAllowed() && |
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452 request->remote_ip != LOCALHOST) |
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453 { |
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454 SendUnauthorized(output); |
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455 return (void*) ""; |
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456 } |
| 0 | 457 |
| 458 HttpHandler::Arguments arguments, headers; | |
| 459 | |
| 460 for (int i = 0; i < request->num_headers; i++) | |
| 461 { | |
| 462 std::string name = request->http_headers[i].name; | |
| 463 std::transform(name.begin(), name.end(), name.begin(), ::tolower); | |
| 464 headers.insert(std::make_pair(name, request->http_headers[i].value)); | |
| 465 } | |
| 466 | |
| 23 | 467 // Authenticate this connection |
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468 if (that->IsAuthenticationEnabled() && |
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469 !Authorize(*that, headers, output)) |
| 23 | 470 { |
| 471 return (void*) ""; | |
| 472 } | |
| 473 | |
| 0 | 474 std::string postData; |
| 475 | |
| 476 if (!strcmp(request->request_method, "GET")) | |
| 477 { | |
| 478 HttpHandler::ParseGetQuery(arguments, request->query_string); | |
| 479 } | |
| 480 else if (!strcmp(request->request_method, "POST")) | |
| 481 { | |
| 482 HttpHandler::Arguments::const_iterator ct = headers.find("content-type"); | |
| 483 if (ct == headers.end()) | |
| 484 { | |
| 59 | 485 output.SendHeader(Orthanc_HttpStatus_400_BadRequest); |
| 0 | 486 return (void*) ""; |
| 487 } | |
| 488 | |
| 489 PostDataStatus status; | |
| 490 | |
| 491 std::string contentType = ct->second; | |
| 492 if (contentType.size() >= multipartLength && | |
| 493 !memcmp(contentType.c_str(), multipart, multipartLength)) | |
| 494 { | |
| 495 status = ParseMultipartPost(postData, connection, headers, contentType, that->GetChunkStore()); | |
| 496 } | |
| 497 else | |
| 498 { | |
| 499 status = ReadPostData(postData, connection, headers); | |
| 500 } | |
| 501 | |
| 502 switch (status) | |
| 503 { | |
| 504 case PostDataStatus_NoLength: | |
| 59 | 505 output.SendHeader(Orthanc_HttpStatus_411_LengthRequired); |
| 0 | 506 return (void*) ""; |
| 507 | |
| 508 case PostDataStatus_Failure: | |
| 59 | 509 output.SendHeader(Orthanc_HttpStatus_400_BadRequest); |
| 0 | 510 return (void*) ""; |
| 511 | |
| 512 case PostDataStatus_Pending: | |
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513 output.AnswerBuffer(""); |
| 0 | 514 return (void*) ""; |
| 515 | |
| 516 default: | |
| 517 break; | |
| 518 } | |
| 519 } | |
| 520 | |
| 521 UriComponents uri; | |
| 522 Toolbox::SplitUriComponents(uri, request->uri); | |
| 523 | |
| 524 HttpHandler* handler = that->FindHandler(uri); | |
| 525 if (handler) | |
| 526 { | |
| 527 try | |
| 528 { | |
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529 handler->Handle(output, std::string(request->request_method), |
| 0 | 530 uri, headers, arguments, postData); |
| 531 } | |
| 59 | 532 catch (OrthancException& e) |
| 0 | 533 { |
| 108 | 534 LOG(ERROR) << "MongooseServer Exception [" << e.What() << "]"; |
| 59 | 535 output.SendHeader(Orthanc_HttpStatus_500_InternalServerError); |
| 0 | 536 } |
| 537 } | |
| 538 else | |
| 539 { | |
| 59 | 540 output.SendHeader(Orthanc_HttpStatus_404_NotFound); |
| 0 | 541 } |
| 542 | |
| 543 // Mark as processed | |
| 544 return (void*) ""; | |
| 545 } | |
| 546 else | |
| 547 { | |
| 548 return NULL; | |
| 549 } | |
| 550 } | |
| 551 | |
| 552 | |
| 553 bool MongooseServer::IsRunning() const | |
| 554 { | |
| 555 return (pimpl_->context_ != NULL); | |
| 556 } | |
| 557 | |
| 558 | |
| 559 MongooseServer::MongooseServer() : pimpl_(new PImpl) | |
| 560 { | |
| 561 pimpl_->context_ = NULL; | |
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562 remoteAllowed_ = false; |
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563 authentication_ = false; |
| 23 | 564 ssl_ = false; |
| 0 | 565 port_ = 8000; |
| 566 } | |
| 567 | |
| 568 | |
| 569 MongooseServer::~MongooseServer() | |
| 570 { | |
| 571 Stop(); | |
| 572 ClearHandlers(); | |
| 573 } | |
| 574 | |
| 575 | |
| 576 void MongooseServer::SetPort(uint16_t port) | |
| 577 { | |
| 578 Stop(); | |
| 579 port_ = port; | |
| 580 } | |
| 581 | |
| 582 void MongooseServer::Start() | |
| 583 { | |
| 584 if (!IsRunning()) | |
| 585 { | |
| 586 std::string port = boost::lexical_cast<std::string>(port_); | |
| 587 | |
| 23 | 588 if (ssl_) |
| 589 { | |
| 590 port += "s"; | |
| 591 } | |
| 592 | |
| 0 | 593 const char *options[] = { |
| 594 "listening_ports", port.c_str(), | |
| 23 | 595 ssl_ ? "ssl_certificate" : NULL, |
| 596 certificate_.c_str(), | |
| 0 | 597 NULL |
| 598 }; | |
| 599 | |
| 600 pimpl_->context_ = mg_start(&Callback, this, options); | |
| 601 if (!pimpl_->context_) | |
| 602 { | |
| 59 | 603 throw OrthancException("Unable to launch the Mongoose server"); |
| 0 | 604 } |
| 605 } | |
| 606 } | |
| 607 | |
| 608 void MongooseServer::Stop() | |
| 609 { | |
| 610 if (IsRunning()) | |
| 611 { | |
| 612 mg_stop(pimpl_->context_); | |
| 613 pimpl_->context_ = NULL; | |
| 614 } | |
| 615 } | |
| 616 | |
| 617 | |
| 618 void MongooseServer::RegisterHandler(HttpHandler* handler) | |
| 619 { | |
| 620 Stop(); | |
| 621 | |
| 622 handlers_.push_back(handler); | |
| 623 } | |
| 624 | |
| 625 | |
| 626 void MongooseServer::ClearHandlers() | |
| 627 { | |
| 628 Stop(); | |
| 629 | |
| 630 for (Handlers::iterator it = | |
| 631 handlers_.begin(); it != handlers_.end(); it++) | |
| 632 { | |
| 633 delete *it; | |
| 634 } | |
| 635 } | |
| 636 | |
| 23 | 637 |
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638 void MongooseServer::ClearUsers() |
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639 { |
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640 Stop(); |
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641 registeredUsers_.clear(); |
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642 } |
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643 |
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644 |
| 23 | 645 void MongooseServer::RegisterUser(const char* username, |
| 646 const char* password) | |
| 647 { | |
| 648 Stop(); | |
| 24 | 649 |
| 650 std::string tag = std::string(username) + ":" + std::string(password); | |
| 651 registeredUsers_.insert(Toolbox::EncodeBase64(tag)); | |
| 23 | 652 } |
| 653 | |
| 654 void MongooseServer::SetSslEnabled(bool enabled) | |
| 655 { | |
| 656 Stop(); | |
| 657 | |
| 59 | 658 #if ORTHANC_SSL_ENABLED == 0 |
| 23 | 659 if (enabled) |
| 660 { | |
| 59 | 661 throw OrthancException("Orthanc has been built without SSL support"); |
| 23 | 662 } |
| 663 else | |
| 664 { | |
| 665 ssl_ = false; | |
| 666 } | |
| 667 #else | |
| 668 ssl_ = enabled; | |
| 669 #endif | |
| 670 } | |
| 671 | |
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672 void MongooseServer::SetAuthenticationEnabled(bool enabled) |
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673 { |
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674 Stop(); |
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675 authentication_ = enabled; |
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676 } |
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677 |
| 23 | 678 void MongooseServer::SetSslCertificate(const char* path) |
| 679 { | |
| 680 Stop(); | |
| 681 certificate_ = path; | |
| 682 } | |
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683 |
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684 void MongooseServer::SetRemoteAccessAllowed(bool allowed) |
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685 { |
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686 Stop(); |
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687 remoteAllowed_ = allowed; |
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688 } |
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689 |
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690 |
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691 bool MongooseServer::IsValidBasicHttpAuthentication(const std::string& basic) const |
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692 { |
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693 return registeredUsers_.find(basic) != registeredUsers_.end(); |
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694 } |
| 0 | 695 } |