Mercurial > hg > orthanc-stone
annotate Resources/Orthanc/Core/SystemToolbox.cpp @ 22:b01d46e5a2b3
support for sandboxed environments
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 23 Nov 2016 12:08:15 +0100 |
| parents | ff1e935768e7 |
| children | a4a1e4033403 |
| rev | line source |
|---|---|
| 15 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, 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 * 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 | |
| 33 #include "PrecompiledHeaders.h" | |
| 34 #include "SystemToolbox.h" | |
| 35 | |
| 36 | |
| 37 #if BOOST_HAS_DATE_TIME == 1 | |
| 38 #include <boost/date_time/posix_time/posix_time.hpp> | |
| 39 #endif | |
| 40 | |
| 41 | |
| 42 #if defined(_WIN32) | |
| 43 #include <windows.h> | |
| 44 #include <process.h> // For "_spawnvp()" and "_getpid()" | |
| 45 #else | |
| 46 #include <unistd.h> // For "execvp()" | |
| 47 #include <sys/wait.h> // For "waitpid()" | |
| 48 #endif | |
| 49 | |
| 50 #if defined(__APPLE__) && defined(__MACH__) | |
| 51 #include <mach-o/dyld.h> /* _NSGetExecutablePath */ | |
| 52 #include <limits.h> /* PATH_MAX */ | |
| 53 #endif | |
| 54 | |
| 55 #if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) | |
| 56 #include <limits.h> /* PATH_MAX */ | |
| 57 #include <signal.h> | |
| 58 #include <unistd.h> | |
| 59 #endif | |
| 60 | |
| 61 | |
|
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62 // Inclusions for UUID |
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63 // http://stackoverflow.com/a/1626302 |
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64 |
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65 extern "C" |
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66 { |
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67 #ifdef WIN32 |
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68 # include <rpc.h> |
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69 #else |
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70 # include <uuid/uuid.h> |
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71 #endif |
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72 } |
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73 |
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74 |
| 15 | 75 #include "Logging.h" |
| 76 #include "OrthancException.h" | |
| 77 #include "Toolbox.h" | |
| 78 | |
| 79 #include <boost/filesystem.hpp> | |
| 80 #include <boost/filesystem/fstream.hpp> | |
| 81 | |
| 82 | |
| 83 namespace Orthanc | |
| 84 { | |
| 85 static bool finish_; | |
| 86 static ServerBarrierEvent barrierEvent_; | |
| 87 | |
| 88 #if defined(_WIN32) | |
| 89 static BOOL WINAPI ConsoleControlHandler(DWORD dwCtrlType) | |
| 90 { | |
| 91 // http://msdn.microsoft.com/en-us/library/ms683242(v=vs.85).aspx | |
| 92 finish_ = true; | |
| 93 return true; | |
| 94 } | |
| 95 #else | |
| 96 static void SignalHandler(int signal) | |
| 97 { | |
| 98 if (signal == SIGHUP) | |
| 99 { | |
| 100 barrierEvent_ = ServerBarrierEvent_Reload; | |
| 101 } | |
| 102 | |
| 103 finish_ = true; | |
| 104 } | |
| 105 #endif | |
| 106 | |
| 107 | |
| 108 static ServerBarrierEvent ServerBarrierInternal(const bool* stopFlag) | |
| 109 { | |
| 110 #if defined(_WIN32) | |
| 111 SetConsoleCtrlHandler(ConsoleControlHandler, true); | |
| 112 #else | |
| 113 signal(SIGINT, SignalHandler); | |
| 114 signal(SIGQUIT, SignalHandler); | |
| 115 signal(SIGTERM, SignalHandler); | |
| 116 signal(SIGHUP, SignalHandler); | |
| 117 #endif | |
| 118 | |
| 119 // Active loop that awakens every 100ms | |
| 120 finish_ = false; | |
| 121 barrierEvent_ = ServerBarrierEvent_Stop; | |
| 122 while (!(*stopFlag || finish_)) | |
| 123 { | |
| 124 Toolbox::USleep(100 * 1000); | |
| 125 } | |
| 126 | |
| 127 #if defined(_WIN32) | |
| 128 SetConsoleCtrlHandler(ConsoleControlHandler, false); | |
| 129 #else | |
| 130 signal(SIGINT, NULL); | |
| 131 signal(SIGQUIT, NULL); | |
| 132 signal(SIGTERM, NULL); | |
| 133 signal(SIGHUP, NULL); | |
| 134 #endif | |
| 135 | |
| 136 return barrierEvent_; | |
| 137 } | |
| 138 | |
| 139 | |
| 140 ServerBarrierEvent SystemToolbox::ServerBarrier(const bool& stopFlag) | |
| 141 { | |
| 142 return ServerBarrierInternal(&stopFlag); | |
| 143 } | |
| 144 | |
| 145 | |
| 146 ServerBarrierEvent SystemToolbox::ServerBarrier() | |
| 147 { | |
| 148 const bool stopFlag = false; | |
| 149 return ServerBarrierInternal(&stopFlag); | |
| 150 } | |
| 151 | |
| 152 | |
| 153 static std::streamsize GetStreamSize(std::istream& f) | |
| 154 { | |
| 155 // http://www.cplusplus.com/reference/iostream/istream/tellg/ | |
| 156 f.seekg(0, std::ios::end); | |
| 157 std::streamsize size = f.tellg(); | |
| 158 f.seekg(0, std::ios::beg); | |
| 159 | |
| 160 return size; | |
| 161 } | |
| 162 | |
| 163 | |
| 164 void SystemToolbox::ReadFile(std::string& content, | |
| 165 const std::string& path) | |
| 166 { | |
| 167 if (!IsRegularFile(path)) | |
| 168 { | |
| 169 LOG(ERROR) << std::string("The path does not point to a regular file: ") << path; | |
| 170 throw OrthancException(ErrorCode_RegularFileExpected); | |
| 171 } | |
| 172 | |
| 173 boost::filesystem::ifstream f; | |
| 174 f.open(path, std::ifstream::in | std::ifstream::binary); | |
| 175 if (!f.good()) | |
| 176 { | |
| 177 throw OrthancException(ErrorCode_InexistentFile); | |
| 178 } | |
| 179 | |
| 180 std::streamsize size = GetStreamSize(f); | |
| 181 content.resize(size); | |
| 182 if (size != 0) | |
| 183 { | |
| 184 f.read(reinterpret_cast<char*>(&content[0]), size); | |
| 185 } | |
| 186 | |
| 187 f.close(); | |
| 188 } | |
| 189 | |
| 190 | |
| 191 bool SystemToolbox::ReadHeader(std::string& header, | |
| 192 const std::string& path, | |
| 193 size_t headerSize) | |
| 194 { | |
| 195 if (!IsRegularFile(path)) | |
| 196 { | |
| 197 LOG(ERROR) << std::string("The path does not point to a regular file: ") << path; | |
| 198 throw OrthancException(ErrorCode_RegularFileExpected); | |
| 199 } | |
| 200 | |
| 201 boost::filesystem::ifstream f; | |
| 202 f.open(path, std::ifstream::in | std::ifstream::binary); | |
| 203 if (!f.good()) | |
| 204 { | |
| 205 throw OrthancException(ErrorCode_InexistentFile); | |
| 206 } | |
| 207 | |
| 208 bool full = true; | |
| 209 | |
| 210 { | |
| 211 std::streamsize size = GetStreamSize(f); | |
| 212 if (size <= 0) | |
| 213 { | |
| 214 headerSize = 0; | |
| 215 full = false; | |
| 216 } | |
| 217 else if (static_cast<size_t>(size) < headerSize) | |
| 218 { | |
| 219 headerSize = size; // Truncate to the size of the file | |
| 220 full = false; | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 header.resize(headerSize); | |
| 225 if (headerSize != 0) | |
| 226 { | |
| 227 f.read(reinterpret_cast<char*>(&header[0]), headerSize); | |
| 228 } | |
| 229 | |
| 230 f.close(); | |
| 231 | |
| 232 return full; | |
| 233 } | |
| 234 | |
| 235 | |
| 236 void SystemToolbox::WriteFile(const void* content, | |
| 237 size_t size, | |
| 238 const std::string& path) | |
| 239 { | |
| 240 boost::filesystem::ofstream f; | |
| 241 f.open(path, std::ofstream::out | std::ofstream::binary); | |
| 242 if (!f.good()) | |
| 243 { | |
| 244 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 245 } | |
| 246 | |
| 247 if (size != 0) | |
| 248 { | |
| 249 f.write(reinterpret_cast<const char*>(content), size); | |
| 250 | |
| 251 if (!f.good()) | |
| 252 { | |
| 253 f.close(); | |
| 254 throw OrthancException(ErrorCode_FileStorageCannotWrite); | |
| 255 } | |
| 256 } | |
| 257 | |
| 258 f.close(); | |
| 259 } | |
| 260 | |
| 261 | |
| 262 void SystemToolbox::WriteFile(const std::string& content, | |
| 263 const std::string& path) | |
| 264 { | |
| 265 WriteFile(content.size() > 0 ? content.c_str() : NULL, | |
| 266 content.size(), path); | |
| 267 } | |
| 268 | |
| 269 | |
| 270 void SystemToolbox::RemoveFile(const std::string& path) | |
| 271 { | |
| 272 if (boost::filesystem::exists(path)) | |
| 273 { | |
| 274 if (IsRegularFile(path)) | |
| 275 { | |
| 276 boost::filesystem::remove(path); | |
| 277 } | |
| 278 else | |
| 279 { | |
| 280 throw OrthancException(ErrorCode_RegularFileExpected); | |
| 281 } | |
| 282 } | |
| 283 } | |
| 284 | |
| 285 | |
| 286 uint64_t SystemToolbox::GetFileSize(const std::string& path) | |
| 287 { | |
| 288 try | |
| 289 { | |
| 290 return static_cast<uint64_t>(boost::filesystem::file_size(path)); | |
| 291 } | |
| 292 catch (boost::filesystem::filesystem_error&) | |
| 293 { | |
| 294 throw OrthancException(ErrorCode_InexistentFile); | |
| 295 } | |
| 296 } | |
| 297 | |
| 298 | |
| 299 void SystemToolbox::MakeDirectory(const std::string& path) | |
| 300 { | |
| 301 if (boost::filesystem::exists(path)) | |
| 302 { | |
| 303 if (!boost::filesystem::is_directory(path)) | |
| 304 { | |
| 305 throw OrthancException(ErrorCode_DirectoryOverFile); | |
| 306 } | |
| 307 } | |
| 308 else | |
| 309 { | |
| 310 if (!boost::filesystem::create_directories(path)) | |
| 311 { | |
| 312 throw OrthancException(ErrorCode_MakeDirectory); | |
| 313 } | |
| 314 } | |
| 315 } | |
| 316 | |
| 317 | |
| 318 bool SystemToolbox::IsExistingFile(const std::string& path) | |
| 319 { | |
| 320 return boost::filesystem::exists(path); | |
| 321 } | |
| 322 | |
| 323 | |
| 324 #if defined(_WIN32) | |
| 325 static std::string GetPathToExecutableInternal() | |
| 326 { | |
| 327 // Yes, this is ugly, but there is no simple way to get the | |
| 328 // required buffer size, so we use a big constant | |
| 329 std::vector<char> buffer(32768); | |
| 330 /*int bytes =*/ GetModuleFileNameA(NULL, &buffer[0], static_cast<DWORD>(buffer.size() - 1)); | |
| 331 return std::string(&buffer[0]); | |
| 332 } | |
| 333 | |
| 334 #elif defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) | |
| 335 static std::string GetPathToExecutableInternal() | |
| 336 { | |
| 337 std::vector<char> buffer(PATH_MAX + 1); | |
| 338 ssize_t bytes = readlink("/proc/self/exe", &buffer[0], buffer.size() - 1); | |
| 339 if (bytes == 0) | |
| 340 { | |
| 341 throw OrthancException(ErrorCode_PathToExecutable); | |
| 342 } | |
| 343 | |
| 344 return std::string(&buffer[0]); | |
| 345 } | |
| 346 | |
| 347 #elif defined(__APPLE__) && defined(__MACH__) | |
| 348 static std::string GetPathToExecutableInternal() | |
| 349 { | |
| 350 char pathbuf[PATH_MAX + 1]; | |
| 351 unsigned int bufsize = static_cast<int>(sizeof(pathbuf)); | |
| 352 | |
| 353 _NSGetExecutablePath( pathbuf, &bufsize); | |
| 354 | |
| 355 return std::string(pathbuf); | |
| 356 } | |
| 357 | |
| 358 #else | |
| 359 #error Support your platform here | |
| 360 #endif | |
| 361 | |
| 362 | |
| 363 std::string SystemToolbox::GetPathToExecutable() | |
| 364 { | |
| 365 boost::filesystem::path p(GetPathToExecutableInternal()); | |
| 366 return boost::filesystem::absolute(p).string(); | |
| 367 } | |
| 368 | |
| 369 | |
| 370 std::string SystemToolbox::GetDirectoryOfExecutable() | |
| 371 { | |
| 372 boost::filesystem::path p(GetPathToExecutableInternal()); | |
| 373 return boost::filesystem::absolute(p.parent_path()).string(); | |
| 374 } | |
| 375 | |
| 376 | |
| 377 void SystemToolbox::ExecuteSystemCommand(const std::string& command, | |
| 378 const std::vector<std::string>& arguments) | |
| 379 { | |
| 380 // Convert the arguments as a C array | |
| 381 std::vector<char*> args(arguments.size() + 2); | |
| 382 | |
| 383 args.front() = const_cast<char*>(command.c_str()); | |
| 384 | |
| 385 for (size_t i = 0; i < arguments.size(); i++) | |
| 386 { | |
| 387 args[i + 1] = const_cast<char*>(arguments[i].c_str()); | |
| 388 } | |
| 389 | |
| 390 args.back() = NULL; | |
| 391 | |
| 392 int status; | |
| 393 | |
| 394 #if defined(_WIN32) | |
| 395 // http://msdn.microsoft.com/en-us/library/275khfab.aspx | |
| 396 status = static_cast<int>(_spawnvp(_P_OVERLAY, command.c_str(), &args[0])); | |
| 397 | |
| 398 #else | |
| 399 int pid = fork(); | |
| 400 | |
| 401 if (pid == -1) | |
| 402 { | |
| 403 // Error in fork() | |
| 404 #if ORTHANC_ENABLE_LOGGING == 1 | |
| 405 LOG(ERROR) << "Cannot fork a child process"; | |
| 406 #endif | |
| 407 | |
| 408 throw OrthancException(ErrorCode_SystemCommand); | |
| 409 } | |
| 410 else if (pid == 0) | |
| 411 { | |
| 412 // Execute the system command in the child process | |
| 413 execvp(command.c_str(), &args[0]); | |
| 414 | |
| 415 // We should never get here | |
| 416 _exit(1); | |
| 417 } | |
| 418 else | |
| 419 { | |
| 420 // Wait for the system command to exit | |
| 421 waitpid(pid, &status, 0); | |
| 422 } | |
| 423 #endif | |
| 424 | |
| 425 if (status != 0) | |
| 426 { | |
| 427 #if ORTHANC_ENABLE_LOGGING == 1 | |
| 428 LOG(ERROR) << "System command failed with status code " << status; | |
| 429 #endif | |
| 430 | |
| 431 throw OrthancException(ErrorCode_SystemCommand); | |
| 432 } | |
| 433 } | |
| 434 | |
| 435 | |
| 436 int SystemToolbox::GetProcessId() | |
| 437 { | |
| 438 #if defined(_WIN32) | |
| 439 return static_cast<int>(_getpid()); | |
| 440 #else | |
| 441 return static_cast<int>(getpid()); | |
| 442 #endif | |
| 443 } | |
| 444 | |
| 445 | |
| 446 bool SystemToolbox::IsRegularFile(const std::string& path) | |
| 447 { | |
| 448 namespace fs = boost::filesystem; | |
| 449 | |
| 450 try | |
| 451 { | |
| 452 if (fs::exists(path)) | |
| 453 { | |
| 454 fs::file_status status = fs::status(path); | |
| 455 return (status.type() == boost::filesystem::regular_file || | |
| 456 status.type() == boost::filesystem::reparse_file); // Fix BitBucket issue #11 | |
| 457 } | |
| 458 } | |
| 459 catch (fs::filesystem_error&) | |
| 460 { | |
| 461 } | |
| 462 | |
| 463 return false; | |
| 464 } | |
| 465 | |
| 466 | |
| 467 FILE* SystemToolbox::OpenFile(const std::string& path, | |
| 468 FileMode mode) | |
| 469 { | |
| 470 #if defined(_WIN32) | |
| 471 // TODO Deal with special characters by converting to the current locale | |
| 472 #endif | |
| 473 | |
| 474 const char* m; | |
| 475 switch (mode) | |
| 476 { | |
| 477 case FileMode_ReadBinary: | |
| 478 m = "rb"; | |
| 479 break; | |
| 480 | |
| 481 case FileMode_WriteBinary: | |
| 482 m = "wb"; | |
| 483 break; | |
| 484 | |
| 485 default: | |
| 486 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 487 } | |
| 488 | |
| 489 return fopen(path.c_str(), m); | |
| 490 } | |
| 491 | |
| 492 | |
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493 std::string SystemToolbox::GenerateUuid() |
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494 { |
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495 #ifdef WIN32 |
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496 UUID uuid; |
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497 UuidCreate ( &uuid ); |
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498 |
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499 unsigned char * str; |
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500 UuidToStringA ( &uuid, &str ); |
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501 |
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502 std::string s( ( char* ) str ); |
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503 |
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504 RpcStringFreeA ( &str ); |
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505 #else |
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506 uuid_t uuid; |
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507 uuid_generate_random ( uuid ); |
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508 char s[37]; |
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509 uuid_unparse ( uuid, s ); |
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510 #endif |
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511 return s; |
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support for sandboxed environments
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
16
diff
changeset
|
512 } |
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b01d46e5a2b3
support for sandboxed environments
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
16
diff
changeset
|
513 |
|
b01d46e5a2b3
support for sandboxed environments
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
16
diff
changeset
|
514 |
| 15 | 515 #if BOOST_HAS_DATE_TIME == 1 |
| 516 std::string SystemToolbox::GetNowIsoString() | |
| 517 { | |
| 518 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); | |
| 519 return boost::posix_time::to_iso_string(now); | |
| 520 } | |
| 521 | |
| 522 void SystemToolbox::GetNowDicom(std::string& date, | |
| 523 std::string& time) | |
| 524 { | |
| 525 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); | |
| 526 tm tm = boost::posix_time::to_tm(now); | |
| 527 | |
| 528 char s[32]; | |
| 529 sprintf(s, "%04d%02d%02d", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); | |
| 530 date.assign(s); | |
| 531 | |
| 532 // TODO milliseconds | |
| 533 sprintf(s, "%02d%02d%02d.%06d", tm.tm_hour, tm.tm_min, tm.tm_sec, 0); | |
| 534 time.assign(s); | |
| 535 } | |
| 536 #endif | |
| 537 } |