Mercurial > hg > orthanc
view Core/SystemToolbox.cpp @ 2258:cd70a86618b4
added Http headers support to HttpPost/Get/Put/Delete
author | amazy |
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date | Thu, 02 Feb 2017 21:09:06 +0100 |
parents | a3a65de1840f |
children | 9ccd7f926c5b |
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/** * Orthanc - A Lightweight, RESTful DICOM Store * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017 Osimis, Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * In addition, as a special exception, the copyright holders of this * program give permission to link the code of its release with the * OpenSSL project's "OpenSSL" library (or with modified versions of it * that use the same license as the "OpenSSL" library), and distribute * the linked executables. You must obey the GNU General Public License * in all respects for all of the code used other than "OpenSSL". If you * modify file(s) with this exception, you may extend this exception to * your version of the file(s), but you are not obligated to do so. If * you do not wish to do so, delete this exception statement from your * version. If you delete this exception statement from all source files * in the program, then also delete it here. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #include "PrecompiledHeaders.h" #include "SystemToolbox.h" #if BOOST_HAS_DATE_TIME == 1 # include <boost/date_time/posix_time/posix_time.hpp> #endif #if defined(_WIN32) # include <windows.h> # include <process.h> // For "_spawnvp()" and "_getpid()" #else # include <unistd.h> // For "execvp()" # include <sys/wait.h> // For "waitpid()" #endif #if defined(__APPLE__) && defined(__MACH__) # include <mach-o/dyld.h> /* _NSGetExecutablePath */ # include <limits.h> /* PATH_MAX */ #endif #if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) # include <limits.h> /* PATH_MAX */ # include <signal.h> # include <unistd.h> #endif // Inclusions for UUID // http://stackoverflow.com/a/1626302 extern "C" { #ifdef WIN32 # include <rpc.h> #else # include <uuid/uuid.h> #endif } #include "Logging.h" #include "OrthancException.h" #include "Toolbox.h" #include <boost/filesystem.hpp> #include <boost/filesystem/fstream.hpp> namespace Orthanc { static bool finish_; static ServerBarrierEvent barrierEvent_; #if defined(_WIN32) static BOOL WINAPI ConsoleControlHandler(DWORD dwCtrlType) { // http://msdn.microsoft.com/en-us/library/ms683242(v=vs.85).aspx finish_ = true; return true; } #else static void SignalHandler(int signal) { if (signal == SIGHUP) { barrierEvent_ = ServerBarrierEvent_Reload; } finish_ = true; } #endif static ServerBarrierEvent ServerBarrierInternal(const bool* stopFlag) { #if defined(_WIN32) SetConsoleCtrlHandler(ConsoleControlHandler, true); #else signal(SIGINT, SignalHandler); signal(SIGQUIT, SignalHandler); signal(SIGTERM, SignalHandler); signal(SIGHUP, SignalHandler); #endif // Active loop that awakens every 100ms finish_ = false; barrierEvent_ = ServerBarrierEvent_Stop; while (!(*stopFlag || finish_)) { SystemToolbox::USleep(100 * 1000); } #if defined(_WIN32) SetConsoleCtrlHandler(ConsoleControlHandler, false); #else signal(SIGINT, NULL); signal(SIGQUIT, NULL); signal(SIGTERM, NULL); signal(SIGHUP, NULL); #endif return barrierEvent_; } ServerBarrierEvent SystemToolbox::ServerBarrier(const bool& stopFlag) { return ServerBarrierInternal(&stopFlag); } ServerBarrierEvent SystemToolbox::ServerBarrier() { const bool stopFlag = false; return ServerBarrierInternal(&stopFlag); } void SystemToolbox::USleep(uint64_t microSeconds) { #if defined(_WIN32) ::Sleep(static_cast<DWORD>(microSeconds / static_cast<uint64_t>(1000))); #elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) || defined(__native_client__) usleep(microSeconds); #else #error Support your platform here #endif } static std::streamsize GetStreamSize(std::istream& f) { // http://www.cplusplus.com/reference/iostream/istream/tellg/ f.seekg(0, std::ios::end); std::streamsize size = f.tellg(); f.seekg(0, std::ios::beg); return size; } void SystemToolbox::ReadFile(std::string& content, const std::string& path) { if (!IsRegularFile(path)) { LOG(ERROR) << std::string("The path does not point to a regular file: ") << path; throw OrthancException(ErrorCode_RegularFileExpected); } boost::filesystem::ifstream f; f.open(path, std::ifstream::in | std::ifstream::binary); if (!f.good()) { throw OrthancException(ErrorCode_InexistentFile); } std::streamsize size = GetStreamSize(f); content.resize(size); if (size != 0) { f.read(reinterpret_cast<char*>(&content[0]), size); } f.close(); } bool SystemToolbox::ReadHeader(std::string& header, const std::string& path, size_t headerSize) { if (!IsRegularFile(path)) { LOG(ERROR) << std::string("The path does not point to a regular file: ") << path; throw OrthancException(ErrorCode_RegularFileExpected); } boost::filesystem::ifstream f; f.open(path, std::ifstream::in | std::ifstream::binary); if (!f.good()) { throw OrthancException(ErrorCode_InexistentFile); } bool full = true; { std::streamsize size = GetStreamSize(f); if (size <= 0) { headerSize = 0; full = false; } else if (static_cast<size_t>(size) < headerSize) { headerSize = size; // Truncate to the size of the file full = false; } } header.resize(headerSize); if (headerSize != 0) { f.read(reinterpret_cast<char*>(&header[0]), headerSize); } f.close(); return full; } void SystemToolbox::WriteFile(const void* content, size_t size, const std::string& path) { boost::filesystem::ofstream f; f.open(path, std::ofstream::out | std::ofstream::binary); if (!f.good()) { throw OrthancException(ErrorCode_CannotWriteFile); } if (size != 0) { f.write(reinterpret_cast<const char*>(content), size); if (!f.good()) { f.close(); throw OrthancException(ErrorCode_FileStorageCannotWrite); } } f.close(); } void SystemToolbox::WriteFile(const std::string& content, const std::string& path) { WriteFile(content.size() > 0 ? content.c_str() : NULL, content.size(), path); } void SystemToolbox::RemoveFile(const std::string& path) { if (boost::filesystem::exists(path)) { if (IsRegularFile(path)) { boost::filesystem::remove(path); } else { throw OrthancException(ErrorCode_RegularFileExpected); } } } uint64_t SystemToolbox::GetFileSize(const std::string& path) { try { return static_cast<uint64_t>(boost::filesystem::file_size(path)); } catch (boost::filesystem::filesystem_error&) { throw OrthancException(ErrorCode_InexistentFile); } } void SystemToolbox::MakeDirectory(const std::string& path) { if (boost::filesystem::exists(path)) { if (!boost::filesystem::is_directory(path)) { throw OrthancException(ErrorCode_DirectoryOverFile); } } else { if (!boost::filesystem::create_directories(path)) { throw OrthancException(ErrorCode_MakeDirectory); } } } bool SystemToolbox::IsExistingFile(const std::string& path) { return boost::filesystem::exists(path); } #if defined(_WIN32) static std::string GetPathToExecutableInternal() { // Yes, this is ugly, but there is no simple way to get the // required buffer size, so we use a big constant std::vector<char> buffer(32768); /*int bytes =*/ GetModuleFileNameA(NULL, &buffer[0], static_cast<DWORD>(buffer.size() - 1)); return std::string(&buffer[0]); } #elif defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) static std::string GetPathToExecutableInternal() { std::vector<char> buffer(PATH_MAX + 1); ssize_t bytes = readlink("/proc/self/exe", &buffer[0], buffer.size() - 1); if (bytes == 0) { throw OrthancException(ErrorCode_PathToExecutable); } return std::string(&buffer[0]); } #elif defined(__APPLE__) && defined(__MACH__) static std::string GetPathToExecutableInternal() { char pathbuf[PATH_MAX + 1]; unsigned int bufsize = static_cast<int>(sizeof(pathbuf)); _NSGetExecutablePath( pathbuf, &bufsize); return std::string(pathbuf); } #else #error Support your platform here #endif std::string SystemToolbox::GetPathToExecutable() { boost::filesystem::path p(GetPathToExecutableInternal()); return boost::filesystem::absolute(p).string(); } std::string SystemToolbox::GetDirectoryOfExecutable() { boost::filesystem::path p(GetPathToExecutableInternal()); return boost::filesystem::absolute(p.parent_path()).string(); } void SystemToolbox::ExecuteSystemCommand(const std::string& command, const std::vector<std::string>& arguments) { // Convert the arguments as a C array std::vector<char*> args(arguments.size() + 2); args.front() = const_cast<char*>(command.c_str()); for (size_t i = 0; i < arguments.size(); i++) { args[i + 1] = const_cast<char*>(arguments[i].c_str()); } args.back() = NULL; int status; #if defined(_WIN32) // http://msdn.microsoft.com/en-us/library/275khfab.aspx status = static_cast<int>(_spawnvp(_P_OVERLAY, command.c_str(), &args[0])); #else int pid = fork(); if (pid == -1) { // Error in fork() #if ORTHANC_ENABLE_LOGGING == 1 LOG(ERROR) << "Cannot fork a child process"; #endif throw OrthancException(ErrorCode_SystemCommand); } else if (pid == 0) { // Execute the system command in the child process execvp(command.c_str(), &args[0]); // We should never get here _exit(1); } else { // Wait for the system command to exit waitpid(pid, &status, 0); } #endif if (status != 0) { #if ORTHANC_ENABLE_LOGGING == 1 LOG(ERROR) << "System command failed with status code " << status; #endif throw OrthancException(ErrorCode_SystemCommand); } } int SystemToolbox::GetProcessId() { #if defined(_WIN32) return static_cast<int>(_getpid()); #else return static_cast<int>(getpid()); #endif } bool SystemToolbox::IsRegularFile(const std::string& path) { namespace fs = boost::filesystem; try { if (fs::exists(path)) { fs::file_status status = fs::status(path); return (status.type() == boost::filesystem::regular_file || status.type() == boost::filesystem::reparse_file); // Fix BitBucket issue #11 } } catch (fs::filesystem_error&) { } return false; } FILE* SystemToolbox::OpenFile(const std::string& path, FileMode mode) { #if defined(_WIN32) // TODO Deal with special characters by converting to the current locale #endif const char* m; switch (mode) { case FileMode_ReadBinary: m = "rb"; break; case FileMode_WriteBinary: m = "wb"; break; default: throw OrthancException(ErrorCode_ParameterOutOfRange); } return fopen(path.c_str(), m); } std::string SystemToolbox::GenerateUuid() { #ifdef WIN32 UUID uuid; UuidCreate ( &uuid ); unsigned char * str; UuidToStringA ( &uuid, &str ); std::string s( ( char* ) str ); RpcStringFreeA ( &str ); #else uuid_t uuid; uuid_generate_random ( uuid ); char s[37]; uuid_unparse ( uuid, s ); #endif return s; } #if BOOST_HAS_DATE_TIME == 1 std::string SystemToolbox::GetNowIsoString() { boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); return boost::posix_time::to_iso_string(now); } void SystemToolbox::GetNowDicom(std::string& date, std::string& time) { boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); tm tm = boost::posix_time::to_tm(now); char s[32]; sprintf(s, "%04d%02d%02d", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); date.assign(s); // TODO milliseconds sprintf(s, "%02d%02d%02d.%06d", tm.tm_hour, tm.tm_min, tm.tm_sec, 0); time.assign(s); } #endif }