mirror of
https://git.wownero.com/wownero/wownero.git
synced 2024-08-15 01:03:23 +00:00
667 lines
21 KiB
C++
667 lines
21 KiB
C++
// Copyright (c) 2014-2017, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
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#include <cstdio>
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#include "include_base_utils.h"
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#include "file_io_utils.h"
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using namespace epee;
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#include "util.h"
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#include "cryptonote_config.h"
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#include "net/http_client.h" // epee::net_utils::...
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#ifdef WIN32
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#include <windows.h>
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#include <shlobj.h>
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#include <strsafe.h>
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#else
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#include <sys/file.h>
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#include <sys/utsname.h>
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#include <sys/stat.h>
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#endif
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#include <boost/filesystem.hpp>
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#include <boost/asio.hpp>
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#include <openssl/sha.h>
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namespace tools
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{
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std::function<void(int)> signal_handler::m_handler;
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private_file::private_file() noexcept : m_handle(), m_filename() {}
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private_file::private_file(std::FILE* handle, std::string&& filename) noexcept
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: m_handle(handle), m_filename(std::move(filename)) {}
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private_file private_file::create(std::string name)
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{
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#ifdef WIN32
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struct close_handle
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{
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void operator()(HANDLE handle) const noexcept
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{
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CloseHandle(handle);
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}
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};
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std::unique_ptr<void, close_handle> process = nullptr;
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{
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HANDLE temp{};
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const bool fail = OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, std::addressof(temp)) == 0;
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process.reset(temp);
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if (fail)
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return {};
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}
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DWORD sid_size = 0;
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GetTokenInformation(process.get(), TokenOwner, nullptr, 0, std::addressof(sid_size));
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if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
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return {};
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std::unique_ptr<char[]> sid{new char[sid_size]};
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if (!GetTokenInformation(process.get(), TokenOwner, sid.get(), sid_size, std::addressof(sid_size)))
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return {};
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const PSID psid = reinterpret_cast<const PTOKEN_OWNER>(sid.get())->Owner;
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const DWORD daclSize =
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sizeof(ACL) + sizeof(ACCESS_ALLOWED_ACE) + GetLengthSid(psid) - sizeof(DWORD);
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const std::unique_ptr<char[]> dacl{new char[daclSize]};
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if (!InitializeAcl(reinterpret_cast<PACL>(dacl.get()), daclSize, ACL_REVISION))
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return {};
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if (!AddAccessAllowedAce(reinterpret_cast<PACL>(dacl.get()), ACL_REVISION, (READ_CONTROL | FILE_GENERIC_READ | DELETE), psid))
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return {};
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SECURITY_DESCRIPTOR descriptor{};
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if (!InitializeSecurityDescriptor(std::addressof(descriptor), SECURITY_DESCRIPTOR_REVISION))
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return {};
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if (!SetSecurityDescriptorDacl(std::addressof(descriptor), true, reinterpret_cast<PACL>(dacl.get()), false))
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return {};
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SECURITY_ATTRIBUTES attributes{sizeof(SECURITY_ATTRIBUTES), std::addressof(descriptor), false};
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std::unique_ptr<void, close_handle> file{
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CreateFile(
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name.c_str(),
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GENERIC_WRITE, FILE_SHARE_READ,
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std::addressof(attributes),
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CREATE_NEW, (FILE_ATTRIBUTE_TEMPORARY | FILE_FLAG_DELETE_ON_CLOSE),
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nullptr
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)
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};
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if (file)
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{
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const int fd = _open_osfhandle(reinterpret_cast<intptr_t>(file.get()), 0);
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if (0 <= fd)
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{
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file.release();
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std::FILE* real_file = _fdopen(fd, "w");
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if (!real_file)
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{
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_close(fd);
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}
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return {real_file, std::move(name)};
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}
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}
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#else
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const int fdr = open(name.c_str(), (O_RDONLY | O_CREAT), S_IRUSR);
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if (0 <= fdr)
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{
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struct stat rstats = {};
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if (fstat(fdr, std::addressof(rstats)) != 0)
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{
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close(fdr);
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return {};
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}
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fchmod(fdr, (S_IRUSR | S_IWUSR));
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const int fdw = open(name.c_str(), O_RDWR);
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fchmod(fdr, rstats.st_mode);
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close(fdr);
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if (0 <= fdw)
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{
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struct stat wstats = {};
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if (fstat(fdw, std::addressof(wstats)) == 0 &&
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rstats.st_dev == wstats.st_dev && rstats.st_ino == wstats.st_ino &&
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flock(fdw, (LOCK_EX | LOCK_NB)) == 0 && ftruncate(fdw, 0) == 0)
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{
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std::FILE* file = fdopen(fdw, "w");
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if (file) return {file, std::move(name)};
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}
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close(fdw);
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}
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}
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#endif
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return {};
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}
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private_file::~private_file() noexcept
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{
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try
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{
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boost::system::error_code ec{};
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boost::filesystem::remove(filename(), ec);
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}
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catch (...) {}
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}
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#ifdef WIN32
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std::string get_windows_version_display_string()
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{
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typedef void (WINAPI *PGNSI)(LPSYSTEM_INFO);
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typedef BOOL (WINAPI *PGPI)(DWORD, DWORD, DWORD, DWORD, PDWORD);
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#define BUFSIZE 10000
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char pszOS[BUFSIZE] = {0};
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OSVERSIONINFOEX osvi;
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SYSTEM_INFO si;
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PGNSI pGNSI;
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PGPI pGPI;
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BOOL bOsVersionInfoEx;
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DWORD dwType;
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ZeroMemory(&si, sizeof(SYSTEM_INFO));
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ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
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osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
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bOsVersionInfoEx = GetVersionEx((OSVERSIONINFO*) &osvi);
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if(!bOsVersionInfoEx) return pszOS;
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// Call GetNativeSystemInfo if supported or GetSystemInfo otherwise.
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pGNSI = (PGNSI) GetProcAddress(
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GetModuleHandle(TEXT("kernel32.dll")),
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"GetNativeSystemInfo");
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if(NULL != pGNSI)
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pGNSI(&si);
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else GetSystemInfo(&si);
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if ( VER_PLATFORM_WIN32_NT==osvi.dwPlatformId &&
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osvi.dwMajorVersion > 4 )
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{
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StringCchCopy(pszOS, BUFSIZE, TEXT("Microsoft "));
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// Test for the specific product.
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if ( osvi.dwMajorVersion == 6 )
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{
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if( osvi.dwMinorVersion == 0 )
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{
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if( osvi.wProductType == VER_NT_WORKSTATION )
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StringCchCat(pszOS, BUFSIZE, TEXT("Windows Vista "));
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else StringCchCat(pszOS, BUFSIZE, TEXT("Windows Server 2008 " ));
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}
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if ( osvi.dwMinorVersion == 1 )
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{
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if( osvi.wProductType == VER_NT_WORKSTATION )
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StringCchCat(pszOS, BUFSIZE, TEXT("Windows 7 "));
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else StringCchCat(pszOS, BUFSIZE, TEXT("Windows Server 2008 R2 " ));
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}
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pGPI = (PGPI) GetProcAddress(
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GetModuleHandle(TEXT("kernel32.dll")),
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"GetProductInfo");
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pGPI( osvi.dwMajorVersion, osvi.dwMinorVersion, 0, 0, &dwType);
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switch( dwType )
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{
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case PRODUCT_ULTIMATE:
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StringCchCat(pszOS, BUFSIZE, TEXT("Ultimate Edition" ));
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break;
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case PRODUCT_PROFESSIONAL:
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StringCchCat(pszOS, BUFSIZE, TEXT("Professional" ));
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break;
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case PRODUCT_HOME_PREMIUM:
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StringCchCat(pszOS, BUFSIZE, TEXT("Home Premium Edition" ));
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break;
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case PRODUCT_HOME_BASIC:
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StringCchCat(pszOS, BUFSIZE, TEXT("Home Basic Edition" ));
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break;
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case PRODUCT_ENTERPRISE:
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StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise Edition" ));
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break;
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case PRODUCT_BUSINESS:
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StringCchCat(pszOS, BUFSIZE, TEXT("Business Edition" ));
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break;
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case PRODUCT_STARTER:
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StringCchCat(pszOS, BUFSIZE, TEXT("Starter Edition" ));
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break;
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case PRODUCT_CLUSTER_SERVER:
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StringCchCat(pszOS, BUFSIZE, TEXT("Cluster Server Edition" ));
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break;
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case PRODUCT_DATACENTER_SERVER:
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StringCchCat(pszOS, BUFSIZE, TEXT("Datacenter Edition" ));
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break;
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case PRODUCT_DATACENTER_SERVER_CORE:
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StringCchCat(pszOS, BUFSIZE, TEXT("Datacenter Edition (core installation)" ));
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break;
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case PRODUCT_ENTERPRISE_SERVER:
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StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise Edition" ));
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break;
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case PRODUCT_ENTERPRISE_SERVER_CORE:
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StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise Edition (core installation)" ));
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break;
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case PRODUCT_ENTERPRISE_SERVER_IA64:
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StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise Edition for Itanium-based Systems" ));
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break;
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case PRODUCT_SMALLBUSINESS_SERVER:
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StringCchCat(pszOS, BUFSIZE, TEXT("Small Business Server" ));
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break;
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case PRODUCT_SMALLBUSINESS_SERVER_PREMIUM:
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StringCchCat(pszOS, BUFSIZE, TEXT("Small Business Server Premium Edition" ));
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break;
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case PRODUCT_STANDARD_SERVER:
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StringCchCat(pszOS, BUFSIZE, TEXT("Standard Edition" ));
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break;
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case PRODUCT_STANDARD_SERVER_CORE:
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StringCchCat(pszOS, BUFSIZE, TEXT("Standard Edition (core installation)" ));
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break;
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case PRODUCT_WEB_SERVER:
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StringCchCat(pszOS, BUFSIZE, TEXT("Web Server Edition" ));
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break;
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}
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}
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if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 2 )
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{
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if( GetSystemMetrics(SM_SERVERR2) )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Windows Server 2003 R2, "));
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else if ( osvi.wSuiteMask & VER_SUITE_STORAGE_SERVER )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Windows Storage Server 2003"));
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else if ( osvi.wSuiteMask & VER_SUITE_WH_SERVER )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Windows Home Server"));
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else if( osvi.wProductType == VER_NT_WORKSTATION &&
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si.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_AMD64)
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{
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StringCchCat(pszOS, BUFSIZE, TEXT( "Windows XP Professional x64 Edition"));
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}
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else StringCchCat(pszOS, BUFSIZE, TEXT("Windows Server 2003, "));
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// Test for the server type.
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if ( osvi.wProductType != VER_NT_WORKSTATION )
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{
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if ( si.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_IA64 )
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{
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if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Datacenter Edition for Itanium-based Systems" ));
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else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Enterprise Edition for Itanium-based Systems" ));
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}
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else if ( si.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_AMD64 )
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{
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if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Datacenter x64 Edition" ));
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else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Enterprise x64 Edition" ));
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else StringCchCat(pszOS, BUFSIZE, TEXT( "Standard x64 Edition" ));
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}
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else
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{
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if ( osvi.wSuiteMask & VER_SUITE_COMPUTE_SERVER )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Compute Cluster Edition" ));
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else if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Datacenter Edition" ));
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else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Enterprise Edition" ));
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else if ( osvi.wSuiteMask & VER_SUITE_BLADE )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Web Edition" ));
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else StringCchCat(pszOS, BUFSIZE, TEXT( "Standard Edition" ));
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}
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}
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}
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if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 1 )
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{
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StringCchCat(pszOS, BUFSIZE, TEXT("Windows XP "));
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if( osvi.wSuiteMask & VER_SUITE_PERSONAL )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Home Edition" ));
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else StringCchCat(pszOS, BUFSIZE, TEXT( "Professional" ));
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}
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if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 0 )
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{
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StringCchCat(pszOS, BUFSIZE, TEXT("Windows 2000 "));
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if ( osvi.wProductType == VER_NT_WORKSTATION )
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{
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StringCchCat(pszOS, BUFSIZE, TEXT( "Professional" ));
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}
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else
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{
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if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Datacenter Server" ));
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else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
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StringCchCat(pszOS, BUFSIZE, TEXT( "Advanced Server" ));
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else StringCchCat(pszOS, BUFSIZE, TEXT( "Server" ));
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}
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}
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// Include service pack (if any) and build number.
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if( strlen(osvi.szCSDVersion) > 0 )
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{
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StringCchCat(pszOS, BUFSIZE, TEXT(" ") );
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StringCchCat(pszOS, BUFSIZE, osvi.szCSDVersion);
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}
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TCHAR buf[80];
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StringCchPrintf( buf, 80, TEXT(" (build %d)"), osvi.dwBuildNumber);
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StringCchCat(pszOS, BUFSIZE, buf);
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if ( osvi.dwMajorVersion >= 6 )
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{
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if ( si.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_AMD64 )
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StringCchCat(pszOS, BUFSIZE, TEXT( ", 64-bit" ));
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else if (si.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_INTEL )
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StringCchCat(pszOS, BUFSIZE, TEXT(", 32-bit"));
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}
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return pszOS;
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}
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else
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{
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printf( "This sample does not support this version of Windows.\n");
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return pszOS;
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}
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}
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#else
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std::string get_nix_version_display_string()
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{
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utsname un;
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if(uname(&un) < 0)
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return std::string("*nix: failed to get os version");
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return std::string() + un.sysname + " " + un.version + " " + un.release;
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}
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#endif
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std::string get_os_version_string()
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{
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#ifdef WIN32
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return get_windows_version_display_string();
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#else
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return get_nix_version_display_string();
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#endif
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}
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#ifdef WIN32
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std::string get_special_folder_path(int nfolder, bool iscreate)
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{
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namespace fs = boost::filesystem;
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char psz_path[MAX_PATH] = "";
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if(SHGetSpecialFolderPathA(NULL, psz_path, nfolder, iscreate))
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{
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return psz_path;
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}
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LOG_ERROR("SHGetSpecialFolderPathA() failed, could not obtain requested path.");
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return "";
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}
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#endif
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std::string get_default_data_dir()
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{
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/* Please for the love of god refactor the ifdefs out of this */
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// namespace fs = boost::filesystem;
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// Windows < Vista: C:\Documents and Settings\Username\Application Data\CRYPTONOTE_NAME
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// Windows >= Vista: C:\Users\Username\AppData\Roaming\CRYPTONOTE_NAME
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// Mac: ~/Library/Application Support/CRYPTONOTE_NAME
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// Unix: ~/.CRYPTONOTE_NAME
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std::string config_folder;
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#ifdef WIN32
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config_folder = get_special_folder_path(CSIDL_COMMON_APPDATA, true) + "\\" + CRYPTONOTE_NAME;
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#else
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std::string pathRet;
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char* pszHome = getenv("HOME");
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if (pszHome == NULL || strlen(pszHome) == 0)
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pathRet = "/";
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else
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pathRet = pszHome;
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#ifdef MAC_OSX
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// Mac
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pathRet /= "Library/Application Support";
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config_folder = (pathRet + "/" + CRYPTONOTE_NAME);
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#else
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// Unix
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config_folder = (pathRet + "/." + CRYPTONOTE_NAME);
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#endif
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#endif
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return config_folder;
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}
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bool create_directories_if_necessary(const std::string& path)
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{
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namespace fs = boost::filesystem;
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boost::system::error_code ec;
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fs::path fs_path(path);
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if (fs::is_directory(fs_path, ec))
|
|
{
|
|
return true;
|
|
}
|
|
|
|
bool res = fs::create_directories(fs_path, ec);
|
|
if (res)
|
|
{
|
|
LOG_PRINT_L2("Created directory: " << path);
|
|
}
|
|
else
|
|
{
|
|
LOG_PRINT_L2("Can't create directory: " << path << ", err: "<< ec.message());
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
std::error_code replace_file(const std::string& replacement_name, const std::string& replaced_name)
|
|
{
|
|
int code;
|
|
#if defined(WIN32)
|
|
// Maximizing chances for success
|
|
DWORD attributes = ::GetFileAttributes(replaced_name.c_str());
|
|
if (INVALID_FILE_ATTRIBUTES != attributes)
|
|
{
|
|
::SetFileAttributes(replaced_name.c_str(), attributes & (~FILE_ATTRIBUTE_READONLY));
|
|
}
|
|
|
|
bool ok = 0 != ::MoveFileEx(replacement_name.c_str(), replaced_name.c_str(), MOVEFILE_REPLACE_EXISTING);
|
|
code = ok ? 0 : static_cast<int>(::GetLastError());
|
|
#else
|
|
bool ok = 0 == std::rename(replacement_name.c_str(), replaced_name.c_str());
|
|
code = ok ? 0 : errno;
|
|
#endif
|
|
return std::error_code(code, std::system_category());
|
|
}
|
|
|
|
bool sanitize_locale()
|
|
{
|
|
// boost::filesystem throws for "invalid" locales, such as en_US.UTF-8, or kjsdkfs,
|
|
// so reset it here before any calls to it
|
|
try
|
|
{
|
|
boost::filesystem::path p {std::string("test")};
|
|
p /= std::string("test");
|
|
}
|
|
catch (...)
|
|
{
|
|
#if defined(__MINGW32__) || defined(__MINGW__)
|
|
putenv("LC_ALL=C");
|
|
putenv("LANG=C");
|
|
#else
|
|
setenv("LC_ALL", "C", 1);
|
|
setenv("LANG", "C", 1);
|
|
#endif
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
void set_strict_default_file_permissions(bool strict)
|
|
{
|
|
#if defined(__MINGW32__) || defined(__MINGW__)
|
|
// no clue about the odd one out
|
|
#else
|
|
mode_t mode = strict ? 077 : 0;
|
|
umask(mode);
|
|
#endif
|
|
}
|
|
|
|
namespace
|
|
{
|
|
boost::mutex max_concurrency_lock;
|
|
unsigned max_concurrency = boost::thread::hardware_concurrency();
|
|
}
|
|
|
|
void set_max_concurrency(unsigned n)
|
|
{
|
|
if (n < 1)
|
|
n = boost::thread::hardware_concurrency();
|
|
unsigned hwc = boost::thread::hardware_concurrency();
|
|
if (n > hwc)
|
|
n = hwc;
|
|
boost::lock_guard<boost::mutex> lock(max_concurrency_lock);
|
|
max_concurrency = n;
|
|
}
|
|
|
|
unsigned get_max_concurrency()
|
|
{
|
|
boost::lock_guard<boost::mutex> lock(max_concurrency_lock);
|
|
return max_concurrency;
|
|
}
|
|
|
|
bool is_local_address(const std::string &address)
|
|
{
|
|
// extract host
|
|
epee::net_utils::http::url_content u_c;
|
|
if (!epee::net_utils::parse_url(address, u_c))
|
|
{
|
|
MWARNING("Failed to determine whether address '" << address << "' is local, assuming not");
|
|
return false;
|
|
}
|
|
if (u_c.host.empty())
|
|
{
|
|
MWARNING("Failed to determine whether address '" << address << "' is local, assuming not");
|
|
return false;
|
|
}
|
|
|
|
// resolve to IP
|
|
boost::asio::io_service io_service;
|
|
boost::asio::ip::tcp::resolver resolver(io_service);
|
|
boost::asio::ip::tcp::resolver::query query(u_c.host, "");
|
|
boost::asio::ip::tcp::resolver::iterator i = resolver.resolve(query);
|
|
while (i != boost::asio::ip::tcp::resolver::iterator())
|
|
{
|
|
const boost::asio::ip::tcp::endpoint &ep = *i;
|
|
if (ep.address().is_loopback())
|
|
{
|
|
MDEBUG("Address '" << address << "' is local");
|
|
return true;
|
|
}
|
|
++i;
|
|
}
|
|
|
|
MDEBUG("Address '" << address << "' is not local");
|
|
return false;
|
|
}
|
|
int vercmp(const char *v0, const char *v1)
|
|
{
|
|
std::vector<std::string> f0, f1;
|
|
boost::split(f0, v0, boost::is_any_of("."));
|
|
boost::split(f1, v1, boost::is_any_of("."));
|
|
while (f0.size() < f1.size())
|
|
f0.push_back("0");
|
|
while (f1.size() < f0.size())
|
|
f1.push_back("0");
|
|
for (size_t i = 0; i < f0.size(); ++i) {
|
|
int f0i = atoi(f0[i].c_str()), f1i = atoi(f1[i].c_str());
|
|
int n = f0i - f1i;
|
|
if (n)
|
|
return n;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
bool sha256sum(const uint8_t *data, size_t len, crypto::hash &hash)
|
|
{
|
|
SHA256_CTX ctx;
|
|
if (!SHA256_Init(&ctx))
|
|
return false;
|
|
if (!SHA256_Update(&ctx, data, len))
|
|
return false;
|
|
if (!SHA256_Final((unsigned char*)hash.data, &ctx))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool sha256sum(const std::string &filename, crypto::hash &hash)
|
|
{
|
|
if (!epee::file_io_utils::is_file_exist(filename))
|
|
return false;
|
|
std::ifstream f;
|
|
f.exceptions(std::ifstream::failbit | std::ifstream::badbit);
|
|
f.open(filename, std::ios_base::binary | std::ios_base::in | std::ios::ate);
|
|
if (!f)
|
|
return false;
|
|
std::ifstream::pos_type file_size = f.tellg();
|
|
SHA256_CTX ctx;
|
|
if (!SHA256_Init(&ctx))
|
|
return false;
|
|
size_t size_left = file_size;
|
|
f.seekg(0, std::ios::beg);
|
|
while (size_left)
|
|
{
|
|
char buf[4096];
|
|
std::ifstream::pos_type read_size = size_left > sizeof(buf) ? sizeof(buf) : size_left;
|
|
f.read(buf, read_size);
|
|
if (!f || !f.good())
|
|
return false;
|
|
if (!SHA256_Update(&ctx, buf, read_size))
|
|
return false;
|
|
size_left -= read_size;
|
|
}
|
|
f.close();
|
|
if (!SHA256_Final((unsigned char*)hash.data, &ctx))
|
|
return false;
|
|
return true;
|
|
}
|
|
}
|