Mercurial > hg > orthanc
annotate Core/HttpServer/MongooseServer.cpp @ 25:dd1489098265
basic http authentication
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 28 Aug 2012 11:20:49 +0200 |
| parents | 166664f0f860 |
| children | 96e57b863dd9 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Palantir - A Lightweight, RESTful DICOM Store | |
| 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> | |
| 33 | |
| 34 #include "../PalantirException.h" | |
| 35 #include "../ChunkedBuffer.h" | |
| 36 #include "mongoose.h" | |
| 37 | |
| 38 | |
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39 #define PALANTIR_REALM "Palantir Secure Area" |
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40 |
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41 |
| 0 | 42 namespace Palantir |
| 43 { | |
| 44 static const char multipart[] = "multipart/form-data; boundary="; | |
| 45 static unsigned int multipartLength = sizeof(multipart) / sizeof(char) - 1; | |
| 46 | |
| 47 | |
| 48 namespace | |
| 49 { | |
| 50 // Anonymous namespace to avoid clashes between compilation modules | |
| 51 class MongooseOutput : public HttpOutput | |
| 52 { | |
| 53 private: | |
| 54 struct mg_connection* connection_; | |
| 55 | |
| 56 public: | |
| 57 MongooseOutput(struct mg_connection* connection) : connection_(connection) | |
| 58 { | |
| 59 } | |
| 60 | |
| 61 virtual void Send(const void* buffer, size_t length) | |
| 62 { | |
| 63 mg_write(connection_, buffer, length); | |
| 64 } | |
| 65 }; | |
| 66 | |
| 67 | |
| 68 enum PostDataStatus | |
| 69 { | |
| 70 PostDataStatus_Success, | |
| 71 PostDataStatus_NoLength, | |
| 72 PostDataStatus_Pending, | |
| 73 PostDataStatus_Failure | |
| 74 }; | |
| 75 } | |
| 76 | |
| 77 | |
| 78 // TODO Move this to external file | |
| 79 | |
| 80 | |
| 81 class ChunkedFile : public ChunkedBuffer | |
| 82 { | |
| 83 private: | |
| 84 std::string filename_; | |
| 85 | |
| 86 public: | |
| 87 ChunkedFile(const std::string& filename) : | |
| 88 filename_(filename) | |
| 89 { | |
| 90 } | |
| 91 | |
| 92 const std::string& GetFilename() const | |
| 93 { | |
| 94 return filename_; | |
| 95 } | |
| 96 }; | |
| 97 | |
| 98 | |
| 99 | |
| 100 class ChunkStore | |
| 101 { | |
| 102 private: | |
| 103 typedef std::list<ChunkedFile*> Content; | |
| 104 Content content_; | |
| 105 unsigned int numPlaces_; | |
| 106 | |
| 107 boost::mutex mutex_; | |
| 108 std::set<std::string> discardedFiles_; | |
| 109 | |
| 110 void Clear() | |
| 111 { | |
| 112 for (Content::iterator it = content_.begin(); | |
| 113 it != content_.end(); it++) | |
| 114 { | |
| 115 delete *it; | |
| 116 } | |
| 117 } | |
| 118 | |
| 119 Content::iterator Find(const std::string& filename) | |
| 120 { | |
| 121 for (Content::iterator it = content_.begin(); | |
| 122 it != content_.end(); it++) | |
| 123 { | |
| 124 if ((*it)->GetFilename() == filename) | |
| 125 { | |
| 126 return it; | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 return content_.end(); | |
| 131 } | |
| 132 | |
| 133 void Remove(const std::string& filename) | |
| 134 { | |
| 135 Content::iterator it = Find(filename); | |
| 136 if (it != content_.end()) | |
| 137 { | |
| 138 delete *it; | |
| 139 content_.erase(it); | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 public: | |
| 144 ChunkStore() | |
| 145 { | |
| 146 numPlaces_ = 10; | |
| 147 } | |
| 148 | |
| 149 ~ChunkStore() | |
| 150 { | |
| 151 Clear(); | |
| 152 } | |
| 153 | |
| 154 PostDataStatus Store(std::string& completed, | |
| 155 const char* chunkData, | |
| 156 size_t chunkSize, | |
| 157 const std::string& filename, | |
| 158 size_t filesize) | |
| 159 { | |
| 160 boost::mutex::scoped_lock lock(mutex_); | |
| 161 | |
| 162 std::set<std::string>::iterator wasDiscarded = discardedFiles_.find(filename); | |
| 163 if (wasDiscarded != discardedFiles_.end()) | |
| 164 { | |
| 165 discardedFiles_.erase(wasDiscarded); | |
| 166 return PostDataStatus_Failure; | |
| 167 } | |
| 168 | |
| 169 ChunkedFile* f; | |
| 170 Content::iterator it = Find(filename); | |
| 171 if (it == content_.end()) | |
| 172 { | |
| 173 f = new ChunkedFile(filename); | |
| 174 | |
| 175 // Make some room | |
| 176 if (content_.size() >= numPlaces_) | |
| 177 { | |
| 178 discardedFiles_.insert(content_.front()->GetFilename()); | |
| 179 delete content_.front(); | |
| 180 content_.pop_front(); | |
| 181 } | |
| 182 | |
| 183 content_.push_back(f); | |
| 184 } | |
| 185 else | |
| 186 { | |
| 187 f = *it; | |
| 188 } | |
| 189 | |
| 190 f->AddChunk(chunkData, chunkSize); | |
| 191 | |
| 192 if (f->GetNumBytes() > filesize) | |
| 193 { | |
| 194 Remove(filename); | |
| 195 } | |
| 196 else if (f->GetNumBytes() == filesize) | |
| 197 { | |
| 198 f->Flatten(completed); | |
| 199 Remove(filename); | |
| 200 return PostDataStatus_Success; | |
| 201 } | |
| 202 | |
| 203 return PostDataStatus_Pending; | |
| 204 } | |
| 205 | |
| 206 /*void Print() | |
| 207 { | |
| 208 boost::mutex::scoped_lock lock(mutex_); | |
| 209 | |
| 210 printf("ChunkStore status:\n"); | |
| 211 for (Content::const_iterator i = content_.begin(); | |
| 212 i != content_.end(); i++) | |
| 213 { | |
| 214 printf(" [%s]: %d\n", (*i)->GetFilename().c_str(), (*i)->GetNumBytes()); | |
| 215 } | |
| 216 printf("-----\n"); | |
| 217 }*/ | |
| 218 }; | |
| 219 | |
| 220 | |
| 221 struct MongooseServer::PImpl | |
| 222 { | |
| 223 struct mg_context *context_; | |
| 224 ChunkStore chunkStore_; | |
| 225 }; | |
| 226 | |
| 227 | |
| 228 ChunkStore& MongooseServer::GetChunkStore() | |
| 229 { | |
| 230 return pimpl_->chunkStore_; | |
| 231 } | |
| 232 | |
| 233 | |
| 234 | |
| 235 HttpHandler* MongooseServer::FindHandler(const UriComponents& forUri) const | |
| 236 { | |
| 237 for (Handlers::const_iterator it = | |
| 238 handlers_.begin(); it != handlers_.end(); it++) | |
| 239 { | |
| 240 if ((*it)->IsServedUri(forUri)) | |
| 241 { | |
| 242 return *it; | |
| 243 } | |
| 244 } | |
| 245 | |
| 246 return NULL; | |
| 247 } | |
| 248 | |
| 249 | |
| 250 | |
| 251 | |
| 252 static PostDataStatus ReadPostData(std::string& postData, | |
| 253 struct mg_connection *connection, | |
| 254 const HttpHandler::Arguments& headers) | |
| 255 { | |
| 256 HttpHandler::Arguments::const_iterator cs = headers.find("content-length"); | |
| 257 if (cs == headers.end()) | |
| 258 { | |
| 259 return PostDataStatus_NoLength; | |
| 260 } | |
| 261 | |
| 262 int length; | |
| 263 try | |
| 264 { | |
| 265 length = boost::lexical_cast<int>(cs->second); | |
| 266 } | |
| 267 catch (boost::bad_lexical_cast) | |
| 268 { | |
| 269 return PostDataStatus_NoLength; | |
| 270 } | |
| 271 | |
| 272 if (length < 0) | |
| 273 { | |
| 274 length = 0; | |
| 275 } | |
| 276 | |
| 277 postData.resize(length); | |
| 278 | |
| 279 size_t pos = 0; | |
| 280 while (length > 0) | |
| 281 { | |
| 282 int r = mg_read(connection, &postData[pos], length); | |
| 283 if (r <= 0) | |
| 284 { | |
| 285 return PostDataStatus_Failure; | |
| 286 } | |
| 8 | 287 assert(r <= length); |
| 0 | 288 length -= r; |
| 289 pos += r; | |
| 290 } | |
| 291 | |
| 292 return PostDataStatus_Success; | |
| 293 } | |
| 294 | |
| 295 | |
| 296 | |
| 297 static PostDataStatus ParseMultipartPost(std::string &completedFile, | |
| 298 struct mg_connection *connection, | |
| 299 const HttpHandler::Arguments& headers, | |
| 300 const std::string& contentType, | |
| 301 ChunkStore& chunkStore) | |
| 302 { | |
| 303 std::string boundary = "--" + contentType.substr(multipartLength); | |
| 304 | |
| 305 std::string postData; | |
| 306 PostDataStatus status = ReadPostData(postData, connection, headers); | |
| 307 | |
| 308 if (status != PostDataStatus_Success) | |
| 309 { | |
| 310 return status; | |
| 311 } | |
| 312 | |
| 313 /*for (HttpHandler::Arguments::const_iterator i = headers.begin(); i != headers.end(); i++) | |
| 314 { | |
| 315 std::cout << "Header [" << i->first << "] = " << i->second << "\n"; | |
| 316 } | |
| 317 printf("CHUNK\n");*/ | |
| 318 | |
| 319 typedef HttpHandler::Arguments::const_iterator ArgumentIterator; | |
| 320 | |
| 321 ArgumentIterator requestedWith = headers.find("x-requested-with"); | |
| 322 ArgumentIterator fileName = headers.find("x-file-name"); | |
| 323 ArgumentIterator fileSizeStr = headers.find("x-file-size"); | |
| 324 | |
| 325 if (requestedWith == headers.end() || | |
| 326 requestedWith->second != "XMLHttpRequest") | |
| 327 { | |
| 328 return PostDataStatus_Failure; | |
| 329 } | |
| 330 | |
| 331 size_t fileSize = 0; | |
| 332 if (fileSizeStr != headers.end()) | |
| 333 { | |
| 334 try | |
| 335 { | |
| 336 fileSize = boost::lexical_cast<size_t>(fileSizeStr->second); | |
| 337 } | |
| 338 catch (boost::bad_lexical_cast) | |
| 339 { | |
| 340 return PostDataStatus_Failure; | |
| 341 } | |
| 342 } | |
| 343 | |
| 344 typedef boost::find_iterator<std::string::iterator> FindIterator; | |
| 10 | 345 typedef boost::iterator_range<char*> Range; |
| 0 | 346 |
| 347 //chunkStore.Print(); | |
| 348 | |
| 349 try | |
| 350 { | |
| 351 FindIterator last; | |
| 352 for (FindIterator it = | |
| 353 make_find_iterator(postData, boost::first_finder(boundary)); | |
| 354 it!=FindIterator(); | |
| 355 ++it) | |
| 356 { | |
| 357 if (last != FindIterator()) | |
| 358 { | |
| 10 | 359 Range part(&last->back(), &it->front()); |
| 0 | 360 Range content = boost::find_first(part, "\r\n\r\n"); |
| 361 if (content != Range()) | |
| 362 { | |
| 363 Range c(&content.back() + 1, &it->front() - 2); | |
| 364 size_t chunkSize = c.size(); | |
| 365 | |
| 366 if (chunkSize > 0) | |
| 367 { | |
| 368 const char* chunkData = &c.front(); | |
| 369 | |
| 370 if (fileName == headers.end()) | |
| 371 { | |
| 372 // This file is stored in a single chunk | |
| 373 completedFile.resize(chunkSize); | |
| 374 if (chunkSize > 0) | |
| 375 { | |
| 376 memcpy(&completedFile[0], chunkData, chunkSize); | |
| 377 } | |
| 378 return PostDataStatus_Success; | |
| 379 } | |
| 380 else | |
| 381 { | |
| 382 return chunkStore.Store(completedFile, chunkData, chunkSize, fileName->second, fileSize); | |
| 383 } | |
| 384 } | |
| 10 | 385 } |
| 0 | 386 } |
| 387 | |
| 388 last = it; | |
| 389 } | |
| 390 } | |
| 391 catch (std::length_error) | |
| 392 { | |
| 393 return PostDataStatus_Failure; | |
| 394 } | |
| 395 | |
| 396 return PostDataStatus_Pending; | |
| 397 } | |
| 398 | |
| 399 | |
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400 static bool Authorize(const MongooseServer& that, |
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401 const HttpHandler::Arguments& headers, |
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402 HttpOutput& output) |
| 23 | 403 { |
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404 bool granted = false; |
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405 |
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406 HttpHandler::Arguments::const_iterator auth = headers.find("authorization"); |
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407 if (auth != headers.end()) |
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408 { |
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409 std::string s = auth->second; |
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410 if (s.substr(0, 6) == "Basic ") |
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411 { |
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412 std::string b64 = s.substr(6); |
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413 granted = that.IsValidBasicHttpAuthentication(b64); |
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414 } |
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415 } |
| 23 | 416 |
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417 if (!granted) |
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418 { |
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419 std::string s = "HTTP/1.1 401 Unauthorized\r\n" |
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420 "WWW-Authenticate: Basic realm=\"" PALANTIR_REALM "\"" |
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421 "\r\n\r\n"; |
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422 output.Send(&s[0], s.size()); |
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423 return false; |
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424 } |
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425 else |
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426 { |
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427 return true; |
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428 } |
| 23 | 429 } |
| 430 | |
| 431 | |
| 0 | 432 |
| 433 static void* Callback(enum mg_event event, | |
| 434 struct mg_connection *connection, | |
| 435 const struct mg_request_info *request) | |
| 436 { | |
| 437 if (event == MG_NEW_REQUEST) | |
| 438 { | |
| 439 MongooseServer* that = (MongooseServer*) (request->user_data); | |
| 440 | |
| 441 HttpHandler::Arguments arguments, headers; | |
| 442 MongooseOutput c(connection); | |
| 443 | |
| 444 for (int i = 0; i < request->num_headers; i++) | |
| 445 { | |
| 446 std::string name = request->http_headers[i].name; | |
| 447 std::transform(name.begin(), name.end(), name.begin(), ::tolower); | |
| 448 headers.insert(std::make_pair(name, request->http_headers[i].value)); | |
| 449 } | |
| 450 | |
| 23 | 451 // Authenticate this connection |
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452 if (that->IsAuthenticationEnabled() && |
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453 !Authorize(*that, headers, c)) |
| 23 | 454 { |
| 455 return (void*) ""; | |
| 456 } | |
| 457 | |
| 0 | 458 std::string postData; |
| 459 | |
| 460 if (!strcmp(request->request_method, "GET")) | |
| 461 { | |
| 462 HttpHandler::ParseGetQuery(arguments, request->query_string); | |
| 463 } | |
| 464 else if (!strcmp(request->request_method, "POST")) | |
| 465 { | |
| 466 HttpHandler::Arguments::const_iterator ct = headers.find("content-type"); | |
| 467 if (ct == headers.end()) | |
| 468 { | |
| 469 c.SendHeader(HttpStatus_400_BadRequest); | |
| 470 return (void*) ""; | |
| 471 } | |
| 472 | |
| 473 PostDataStatus status; | |
| 474 | |
| 475 std::string contentType = ct->second; | |
| 476 if (contentType.size() >= multipartLength && | |
| 477 !memcmp(contentType.c_str(), multipart, multipartLength)) | |
| 478 { | |
| 479 status = ParseMultipartPost(postData, connection, headers, contentType, that->GetChunkStore()); | |
| 480 } | |
| 481 else | |
| 482 { | |
| 483 status = ReadPostData(postData, connection, headers); | |
| 484 } | |
| 485 | |
| 486 switch (status) | |
| 487 { | |
| 488 case PostDataStatus_NoLength: | |
| 489 c.SendHeader(HttpStatus_411_LengthRequired); | |
| 490 return (void*) ""; | |
| 491 | |
| 492 case PostDataStatus_Failure: | |
| 493 c.SendHeader(HttpStatus_400_BadRequest); | |
| 494 return (void*) ""; | |
| 495 | |
| 496 case PostDataStatus_Pending: | |
| 497 c.AnswerBuffer(""); | |
| 498 return (void*) ""; | |
| 499 | |
| 500 default: | |
| 501 break; | |
| 502 } | |
| 503 } | |
| 504 | |
| 505 UriComponents uri; | |
| 506 Toolbox::SplitUriComponents(uri, request->uri); | |
| 507 | |
| 508 HttpHandler* handler = that->FindHandler(uri); | |
| 509 if (handler) | |
| 510 { | |
| 511 try | |
| 512 { | |
| 513 handler->Handle(c, std::string(request->request_method), | |
| 514 uri, headers, arguments, postData); | |
| 515 } | |
| 516 catch (PalantirException& e) | |
| 517 { | |
| 518 std::cerr << "MongooseServer Exception [" << e.What() << "]" << std::endl; | |
| 519 c.SendHeader(HttpStatus_500_InternalServerError); | |
| 520 } | |
| 521 } | |
| 522 else | |
| 523 { | |
| 524 c.SendHeader(HttpStatus_404_NotFound); | |
| 525 } | |
| 526 | |
| 527 // Mark as processed | |
| 528 return (void*) ""; | |
| 529 } | |
| 530 else | |
| 531 { | |
| 532 return NULL; | |
| 533 } | |
| 534 } | |
| 535 | |
| 536 | |
| 537 bool MongooseServer::IsRunning() const | |
| 538 { | |
| 539 return (pimpl_->context_ != NULL); | |
| 540 } | |
| 541 | |
| 542 | |
| 543 MongooseServer::MongooseServer() : pimpl_(new PImpl) | |
| 544 { | |
| 545 pimpl_->context_ = NULL; | |
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546 authentication_ = false; |
| 23 | 547 ssl_ = false; |
| 0 | 548 port_ = 8000; |
| 549 } | |
| 550 | |
| 551 | |
| 552 MongooseServer::~MongooseServer() | |
| 553 { | |
| 554 Stop(); | |
| 555 ClearHandlers(); | |
| 556 } | |
| 557 | |
| 558 | |
| 559 void MongooseServer::SetPort(uint16_t port) | |
| 560 { | |
| 561 Stop(); | |
| 562 port_ = port; | |
| 563 } | |
| 564 | |
| 565 void MongooseServer::Start() | |
| 566 { | |
| 567 if (!IsRunning()) | |
| 568 { | |
| 569 std::string port = boost::lexical_cast<std::string>(port_); | |
| 570 | |
| 23 | 571 if (ssl_) |
| 572 { | |
| 573 port += "s"; | |
| 574 } | |
| 575 | |
| 0 | 576 const char *options[] = { |
| 577 "listening_ports", port.c_str(), | |
| 23 | 578 ssl_ ? "ssl_certificate" : NULL, |
| 579 certificate_.c_str(), | |
| 0 | 580 NULL |
| 581 }; | |
| 582 | |
| 583 pimpl_->context_ = mg_start(&Callback, this, options); | |
| 584 if (!pimpl_->context_) | |
| 585 { | |
| 586 throw PalantirException("Unable to launch the Mongoose server"); | |
| 587 } | |
| 588 } | |
| 589 } | |
| 590 | |
| 591 void MongooseServer::Stop() | |
| 592 { | |
| 593 if (IsRunning()) | |
| 594 { | |
| 595 mg_stop(pimpl_->context_); | |
| 596 pimpl_->context_ = NULL; | |
| 597 } | |
| 598 } | |
| 599 | |
| 600 | |
| 601 void MongooseServer::RegisterHandler(HttpHandler* handler) | |
| 602 { | |
| 603 Stop(); | |
| 604 | |
| 605 handlers_.push_back(handler); | |
| 606 } | |
| 607 | |
| 608 | |
| 609 void MongooseServer::ClearHandlers() | |
| 610 { | |
| 611 Stop(); | |
| 612 | |
| 613 for (Handlers::iterator it = | |
| 614 handlers_.begin(); it != handlers_.end(); it++) | |
| 615 { | |
| 616 delete *it; | |
| 617 } | |
| 618 } | |
| 619 | |
| 23 | 620 |
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621 void MongooseServer::ClearUsers() |
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622 { |
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623 Stop(); |
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624 registeredUsers_.clear(); |
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625 } |
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626 |
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627 |
| 23 | 628 void MongooseServer::RegisterUser(const char* username, |
| 629 const char* password) | |
| 630 { | |
| 631 Stop(); | |
| 24 | 632 |
| 633 std::string tag = std::string(username) + ":" + std::string(password); | |
| 634 registeredUsers_.insert(Toolbox::EncodeBase64(tag)); | |
| 23 | 635 } |
| 636 | |
| 637 void MongooseServer::SetSslEnabled(bool enabled) | |
| 638 { | |
| 639 Stop(); | |
| 640 | |
| 641 #if PALANTIR_SSL_ENABLED == 0 | |
| 642 if (enabled) | |
| 643 { | |
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644 throw PalantirException("Palantir has been built without SSL support"); |
| 23 | 645 } |
| 646 else | |
| 647 { | |
| 648 ssl_ = false; | |
| 649 } | |
| 650 #else | |
| 651 ssl_ = enabled; | |
| 652 #endif | |
| 653 } | |
| 654 | |
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655 void MongooseServer::SetAuthenticationEnabled(bool enabled) |
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656 { |
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657 Stop(); |
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658 authentication_ = enabled; |
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659 } |
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660 |
| 23 | 661 void MongooseServer::SetSslCertificate(const char* path) |
| 662 { | |
| 663 Stop(); | |
| 664 certificate_ = path; | |
| 665 } | |
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666 |
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667 bool MongooseServer::IsValidBasicHttpAuthentication(const std::string& basic) const |
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668 { |
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669 return registeredUsers_.find(basic) != registeredUsers_.end(); |
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670 } |
| 0 | 671 } |