896 lines
24 KiB
C++
896 lines
24 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: AuProcess.cpp
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Date: 2021-8-20
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Author: Reece
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***/
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#include <Source/RuntimeInternal.hpp>
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#include "Process.hpp"
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#if defined(AURORA_IS_POSIX_DERIVED)
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#include <stdlib.h>
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#include <dlfcn.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <signal.h>
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#endif
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#if defined(AURORA_PLATFORM_WIN32)
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#include <Softpub.h>
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#include <wincrypt.h>
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#include <wintrust.h>
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#endif
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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#include "AuProcessSectionView.NT.hpp"
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#endif
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#include <Source/IO/FS/FS.hpp>
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#include <Source/IO/FS/Resources.hpp>
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#include "AuProcessMap.hpp"
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#if defined(AURORA_COMPILER_CLANG)
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// warning: enumeration values 'kEnumCount' and 'kEnumInvalid' not handled in switch [-Wswitch
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#pragma clang diagnostic ignored "-Wswitch"
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// Yea, I don't give a shit.
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#endif
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namespace Aurora::Process
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{
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static AuFutexMutex gSpinLock;
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static AuList<AuString> gClassPath;
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static AuHashMap<AuString, void *> gModuleHandles;
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static const bool kIsMainSigned = false;
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void LoadProcessSectionViewSymbol();
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static constexpr const char *GetPlatformString(Build::EPlatform platform)
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{
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switch (platform)
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{
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case Build::EPlatform::ePlatformWin32:
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return ".Win32";
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case Build::EPlatform::ePlatformLinux:
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return ".Linux";
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case Build::EPlatform::ePlatformAndroid:
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return ".Android";
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case Build::EPlatform::ePlatformAppleMacOS:
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return ".Mac";
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case Build::EPlatform::ePlatformIos:
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return ".iOS";
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case Build::EPlatform::eKernelBsd:
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return ".BSD";
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default:
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return nullptr;
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}
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}
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static constexpr const char *GetPlatformExt(Build::EPlatform platform)
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{
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switch (platform)
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{
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case Build::EPlatform::ePlatformWin32:
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return ".dll";
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case Build::EPlatform::ePlatformLinux:
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case Build::EPlatform::ePlatformAndroid:
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case Build::EPlatform::eKernelBsd:
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return ".so";
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case Build::EPlatform::ePlatformAppleMacOS:
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case Build::EPlatform::ePlatformIos:
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return ".dylib";
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default:
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return nullptr;
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}
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}
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static constexpr const char *GetArchString(Build::EArchitecture architecture)
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{
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switch (architecture)
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{
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case Build::EArchitecture::eX86_32:
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return ".x86_32";
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case Build::EArchitecture::eX86_64:
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return ".x86_64";
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case Build::EArchitecture::eAArch64:
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return ".arm";
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default:
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return nullptr;
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}
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}
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static AuString ConstructAuDllSuffixUncached()
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{
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auto platform = GetPlatformString(Build::kCurrentPlatform);
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auto architecture = GetArchString(Build::kCurrentArchitecture);
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auto ext = GetPlatformExt(Build::kCurrentPlatform);
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AuString ret;
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#if defined(DEBUG)
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ret += ".Debug";
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#elif defined(STAGING)
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ret += ".Stage";
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#elif defined(SHIP)
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ret += ".Ship";
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#endif
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if (platform)
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{
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ret += platform;
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}
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if (architecture)
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{
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ret += architecture;
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}
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if (ext)
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{
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ret += ext;
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}
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return ret;
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}
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AUKN_SYM const AuString& ConstructAuDllSuffix()
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{
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static AuString dllSuffixString {};
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static AuInitOnce gInitOnce;
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gInitOnce.Call([]
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{
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dllSuffixString = ConstructAuDllSuffixUncached();
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});
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return dllSuffixString;
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}
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static AuString GetModuleNameFromFileName(const AuString &filename)
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{
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static const auto &kStringSuffixA = ConstructAuDllSuffix();
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static const auto kStringSuffixB = GetPlatformExt(Build::kCurrentPlatform);
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if (filename.ends_with(kStringSuffixA))
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{
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return filename.substr(0, filename.size() - kStringSuffixA.size());
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}
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if (filename.ends_with(kStringSuffixB))
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{
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return filename.substr(0, filename.size() - strlen(kStringSuffixB));
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}
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return filename;
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}
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#if defined(AURORA_PLATFORM_WIN32)
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bool VerifyEmbeddedSignature(const wchar_t *path, HANDLE handle)
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{
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LONG lStatus;
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DWORD dwLastError;
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WINTRUST_FILE_INFO FileData;
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memset(&FileData, 0, sizeof(FileData));
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FileData.cbStruct = sizeof(WINTRUST_FILE_INFO);
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FileData.pcwszFilePath = path;
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FileData.hFile = handle;
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FileData.pgKnownSubject = NULL;
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GUID WVTPolicyGUID = WINTRUST_ACTION_GENERIC_VERIFY_V2;
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WINTRUST_DATA WinTrustData;
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// Initialize the WinVerifyTrust input data structure.
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// Default all fields to 0.
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memset(&WinTrustData, 0, sizeof(WinTrustData));
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WinTrustData.cbStruct = sizeof(WinTrustData);
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// Use default code signing EKU.
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WinTrustData.pPolicyCallbackData = NULL;
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// No data to pass to SIP.
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WinTrustData.pSIPClientData = NULL;
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// Disable WVT UI.
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WinTrustData.dwUIChoice = WTD_UI_NONE;
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// Revocation checking.constexpr
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WinTrustData.fdwRevocationChecks = WTD_REVOKE_WHOLECHAIN;
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// Verify an embedded signature on a file.
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WinTrustData.dwUnionChoice = WTD_CHOICE_FILE;
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// Verify action.
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WinTrustData.dwStateAction = WTD_STATEACTION_VERIFY;
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// Verification sets this value.
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WinTrustData.hWVTStateData = NULL;
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// Not used.
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WinTrustData.pwszURLReference = NULL;
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// This is not applicable if there is no UI because it changes
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// the UI to accommodate running applications instead of
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// installing applications.
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WinTrustData.dwUIContext = 0;
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// Set pFile.
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WinTrustData.pFile = &FileData;
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if (!pWinVerifyTrust)
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{
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return gRuntimeConfig.debug.bWin32VerifyTrustFailMissingAPI;
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}
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// WinVerifyTrust verifies signatures as specified by the GUID
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// and Wintrust_Data.
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lStatus = pWinVerifyTrust(
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NULL,
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&WVTPolicyGUID,
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&WinTrustData);
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bool status {};
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switch (lStatus)
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{
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case ERROR_SUCCESS:
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status = true;
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break;
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case TRUST_E_NOSIGNATURE:
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// The file was not signed or had a signature
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// that was not valid.
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// Get the reason for no signature.
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dwLastError = GetLastError();
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if (TRUST_E_NOSIGNATURE == dwLastError ||
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TRUST_E_SUBJECT_FORM_UNKNOWN == dwLastError ||
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TRUST_E_PROVIDER_UNKNOWN == dwLastError)
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{
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SysPushErrorCrypt("The file is not signed.");
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}
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else
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{
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SysPushErrorCrypt("An unknown error occurred trying to verify the signature of the file.");
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}
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break;
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case TRUST_E_EXPLICIT_DISTRUST:
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SysPushErrorCrypt("The signature is present, but specifically disallowed.");
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break;
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case TRUST_E_SUBJECT_NOT_TRUSTED:
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SysPushErrorCrypt("The signature is present, but not trusted.");
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break;
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case CRYPT_E_SECURITY_SETTINGS:
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SysPushErrorCrypt("CRYPT_E_SECURITY_SETTINGS - The hash "
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"representing the subject or the publisher wasn't "
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"explicitly trusted by the admin and admin policy "
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"has disabled user trust. No signature, publisher "
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"or timestamp errors.");
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break;
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default:
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SysPushErrorCrypt("Dependency Injection Error");
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break;
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}
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WinTrustData.dwStateAction = WTD_STATEACTION_CLOSE;
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if (!pWinVerifyTrust)
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{
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return gRuntimeConfig.debug.bWin32VerifyTrustFailMissingAPI;
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}
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lStatus = pWinVerifyTrust(
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NULL,
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&WVTPolicyGUID,
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&WinTrustData);
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return status;
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}
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#endif
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static void *LoadModule(const AuString &name, const AuString &path)
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{
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auto itr = gModuleHandles.find(path);
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if (itr != gModuleHandles.end())
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{
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return itr->second;
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}
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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if (!pLoadLibraryW)
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{
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return {};
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}
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auto handle = pLoadLibraryW(Locale::ConvertFromUTF8(path).c_str());
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if (handle == INVALID_HANDLE_VALUE)
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{
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SysPushErrorNested("Could't link dynamic library {}", path);
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return {};
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}
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#else
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auto handle = dlopen(path.c_str(), RTLD_DEEPBIND);
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if (handle == nullptr)
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{
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SysPushErrorNested("Could't link dynamic library {}", path);
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return {};
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}
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#endif
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auto pRet = (void *)handle;
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gModuleHandles.insert(AuMakePair(name, pRet));
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gModuleHandles.insert(AuMakePair(path, pRet));
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return pRet;
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}
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static void *TryLoadModule(const AuString &path,
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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const AuString &abs,
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#endif
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const ModuleLoadRequest &request,
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bool &fail
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)
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{
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fail = false;
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auto pathNrml = AuIOFS::NormalizePathRet(path);
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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auto widePath = Locale::ConvertFromUTF8(pathNrml);
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auto mitigateTimeOfUse = Win32Open(widePath.c_str(), GENERIC_READ, FILE_SHARE_READ, false, OPEN_EXISTING, 0, 0);
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if (mitigateTimeOfUse == INVALID_HANDLE_VALUE)
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{
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SysPushErrorNested("Couldn't open existing file. Race exploit?");
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fail = true;
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return {};
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}
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auto absPath = AuIOFS::NormalizePathRet(abs);
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#endif
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if (request.verify || ((kIsMainSigned || request.forceMitigations) && request.enableMitigations))
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{
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#if defined(AURORA_PLATFORM_WIN32)
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if (!VerifyEmbeddedSignature(widePath.c_str(), mitigateTimeOfUse))
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{
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SysPushErrorNested("Couldn't verify file {}", path);
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fail = true;
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AuWin32CloseHandle(mitigateTimeOfUse);
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return {};
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}
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#else
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AuLogWarn("Can't verify {} on this platform", path);
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#endif
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}
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#if defined(AURORA_IS_POSIX_DERIVED)
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if (request.enableMitigations && request.unixCheckPlusX)
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{
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struct stat sb;
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if (stat(pathNrml.data(), &sb) != 0)
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{
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SysPushErrorNested("Couldn't open existing file. Race exploit?");
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fail = true;
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return {};
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}
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if ((sb.st_mode & S_IXUSR) == 0)
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{
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fail = true;
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return {};
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}
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}
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#endif
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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auto returnValue = LoadModule(request.mod, absPath);
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#else
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auto returnValue = LoadModule(request.mod, pathNrml);
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#endif
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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// Still doesnt stop hotswaps, and idc
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// Glitching would require software to time the attack
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// ...requiring a certain degree of access (code execution) + effort
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AuWin32CloseHandle(mitigateTimeOfUse);
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#endif
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return returnValue;
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}
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static void *TryLoadModule(const AuString &path, const AuString &auDll, const AuString &genericDll, const ModuleLoadRequest &request, bool &fail)
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{
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AuString a = path + AuString({ AuFS::kPathSplitter }) + auDll;
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AuString b = path + AuString({ AuFS::kPathSplitter }) + genericDll;
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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#if defined(AURORA_PLATFORM_WIN32)
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if (gRuntimeConfig.win32Config.bProcessCheckWinLdrForModNameFirst)
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{
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auto aW = AuLocale::ConvertFromUTF8(genericDll);
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auto bW = AuLocale::ConvertFromUTF8(auDll);
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auto pDLL = ::GetModuleHandleW(aW.c_str());
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if (!pDLL)
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{
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pDLL = ::GetModuleHandleW(bW.c_str());
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}
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if (pDLL)
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{
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gModuleHandles.insert(AuMakePair(request.mod, (void *)pDLL));
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return pDLL;
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}
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}
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#endif
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AuString aAbs = path + AuString({ AuFS::kPathSplitter }) + auDll + ".";
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AuString bAbs = path + AuString({ AuFS::kPathSplitter }) + genericDll + ".";
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#endif
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if (AuIOFS::FileExists(a))
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{
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return TryLoadModule(a,
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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aAbs,
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#endif
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request,
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fail
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);
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}
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if (AuIOFS::FileExists(b))
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{
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return TryLoadModule(b,
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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bAbs,
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#endif
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request,
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fail
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);
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}
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return {};
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}
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static void *TryLoadModule(EModulePath path, const AuString &auDll, const AuString &genericDll, const ModuleLoadRequest &request)
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{
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AuString pathA, pathB;
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AuList<AuString> arrayPaths;
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switch (path)
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{
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case EModulePath::eClassPath:
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{
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AU_LOCK_GUARD(gSpinLock);
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arrayPaths = gClassPath;
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break;
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}
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case EModulePath::eModulePathCWD:
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{
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if (!Process::GetWorkingDirectory(pathA))
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{
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return {};
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}
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break;
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}
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case EModulePath::eProcessDirectory:
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{
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if (auto pProcPath = Process::GetProcessDirectory())
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{
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pathA = *pProcPath;
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break;
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}
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else
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{
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return {};
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}
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}
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case EModulePath::eModulePathSystemDir:
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{
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pathA = AuIOFS::GetSystemLibPath().value_or(AuString {});
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pathB = AuIOFS::GetSystemLibPath2().value_or(AuString {});
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if (pathA.empty())
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{
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return {};
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}
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break;
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}
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case EModulePath::eModulePathUserDir:
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{
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pathA = AuIOFS::GetUserLibPath().value_or(AuString {});
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pathB = AuIOFS::GetUserLibPath2().value_or(AuString {});
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if (pathA.empty())
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{
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return {};
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}
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break;
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}
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//case EModulePath::eOSSpecified:
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//
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// break;
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case EModulePath::eSpecified:
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break;
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}
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bool fail {};
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if (pathA.size())
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{
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if (auto pRet = TryLoadModule(pathA, auDll, genericDll, request, fail))
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{
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return pRet;
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}
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if (fail)
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{
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return {};
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}
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}
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if (pathB.size())
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{
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if (auto pRet = TryLoadModule(pathB, auDll, genericDll, request, fail))
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{
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return pRet;
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}
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if (fail)
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{
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return {};
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}
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}
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for (const auto &dir : arrayPaths)
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{
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if (auto pRet = TryLoadModule(dir, auDll, genericDll, request, fail))
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{
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return pRet;
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}
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if (fail)
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{
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return {};
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}
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}
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if (path == EModulePath::eSpecified && request.specifiedSearchPaths)
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{
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for (const auto &val : *request.specifiedSearchPaths)
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{
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if (auto pRet = TryLoadModule(val, auDll, genericDll, request, fail))
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{
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return pRet;
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}
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if (fail)
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{
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return {};
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}
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}
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}
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return {};
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}
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AUKN_SYM bool LoadModule(const ModuleLoadRequest &request)
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{
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return bool(LoadModuleEx(request));
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}
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|
AUKN_SYM void *LoadModuleEx(const ModuleLoadRequest &request)
|
|
{
|
|
AU_LOCK_GUARD(gSpinLock);
|
|
|
|
auto h = gModuleHandles.find(request.mod);
|
|
if (h != gModuleHandles.end())
|
|
{
|
|
return h->second;
|
|
}
|
|
|
|
auto au = request.mod + ConstructAuDllSuffix();
|
|
auto base = request.mod;
|
|
auto ext = GetPlatformExt(Build::kCurrentPlatform);
|
|
|
|
if (ext && !Build::kIsNtDerived)
|
|
{
|
|
base += ext;
|
|
}
|
|
|
|
if (request.version.size())
|
|
{
|
|
au += "." + request.version;
|
|
base += "." + request.version;
|
|
}
|
|
|
|
if (ext && Build::kIsNtDerived)
|
|
{
|
|
base += ext;
|
|
}
|
|
|
|
auto searchPath = request.searchPath ? request.searchPath : &kUserOverloadableSearchPath;
|
|
for (EModulePath path : *searchPath)
|
|
{
|
|
if (auto pRet = TryLoadModule(path, au, base, request))
|
|
{
|
|
return pRet;
|
|
}
|
|
}
|
|
|
|
return {};
|
|
}
|
|
|
|
AUKN_SYM AuMach GetProcAddressEx(void *pHandle, const AuString &symbol)
|
|
{
|
|
#if defined(AURORA_IS_MODERNNT_DERIVED)
|
|
if (!pGetProcAddress)
|
|
{
|
|
return {};
|
|
}
|
|
|
|
auto ret = reinterpret_cast<AuMach>(pGetProcAddress(reinterpret_cast<HMODULE>(pHandle), symbol.c_str()));
|
|
#else
|
|
auto ret = reinterpret_cast<AuMach>(dlsym(pHandle, symbol.c_str()));
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
AUKN_SYM void *GetProcHandle(const AuString &name)
|
|
{
|
|
AU_LOCK_GUARD(gSpinLock);
|
|
|
|
auto h = gModuleHandles.find(name);
|
|
if (h == gModuleHandles.end())
|
|
{
|
|
SysPushErrorGen("Module {} is not loaded", name);
|
|
return {};
|
|
}
|
|
|
|
return h->second;
|
|
}
|
|
|
|
AUKN_SYM AuMach GetProcAddress(const AuString &mod, const AuString &symbol)
|
|
{
|
|
auto ret = GetProcAddressEx(GetProcHandle(mod), symbol);
|
|
|
|
if (!ret)
|
|
{
|
|
SysPushErrorGen("Couldn't resolve symbol in module {} of mangled name '{}'", mod, symbol);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
AUKN_SYM void Exit(AuUInt32 exitcode)
|
|
{
|
|
Aurora::RuntimeShutdown();
|
|
|
|
#if defined(AURORA_IS_MODERNNT_DERIVED)
|
|
TerminateProcess(GetCurrentProcess(), exitcode);
|
|
Win32Terminate();
|
|
#elif defined(AURORA_IS_POSIX_DERIVED)
|
|
// TODO: if main thread, long jump back, and return exit code
|
|
::kill(getpgrp(), SIGKILL);
|
|
while (true)
|
|
{
|
|
::sched_yield();
|
|
}
|
|
#else
|
|
// ???
|
|
*(AuUInt32 *)0 = exitcode;
|
|
*(AuUInt32 *)0xFFFF = exitcode;
|
|
*(AuUInt32 *)0xFFFFFFFF = exitcode;
|
|
#endif
|
|
}
|
|
|
|
static void PreloadDLLsDoOnce(const AuList<AuString> &dirs)
|
|
{
|
|
AU_DEBUG_MEMCRUNCH;
|
|
|
|
AuList<void *> cookieList;
|
|
|
|
#if defined(AURORA_PLATFORM_WIN32)
|
|
for (const auto dir : dirs)
|
|
{
|
|
void *pCookie {};
|
|
|
|
if (pRemoveDllDirectory)
|
|
{
|
|
if (pAddDllDirectory)
|
|
{
|
|
pCookie = pAddDllDirectory(AuLocale::ConvertFromUTF8(dir).c_str());
|
|
}
|
|
}
|
|
|
|
cookieList.push_back(pCookie);
|
|
}
|
|
#endif
|
|
|
|
for (const auto dir : dirs)
|
|
{
|
|
AuList<AuString> files;
|
|
AuList<AuString> sharedObjects;
|
|
|
|
if (!AuFS::FilesInDirectory(dir, files))
|
|
{
|
|
SysPushErrorIO("Couldn't readdir: {}", dir);
|
|
continue;
|
|
}
|
|
|
|
auto endingPattern = ConstructAuDllSuffix();
|
|
auto endingAlt = GetPlatformExt(Build::kCurrentPlatform);
|
|
|
|
for (const auto &file : files)
|
|
{
|
|
if (!(file.ends_with(endingPattern.c_str()) ||
|
|
file.ends_with(endingAlt)))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
sharedObjects.push_back(file);
|
|
}
|
|
|
|
{
|
|
AuUInt uSuccess {};
|
|
do
|
|
{
|
|
uSuccess = 0;
|
|
|
|
for (auto itr = sharedObjects.begin();
|
|
itr != sharedObjects.end(); )
|
|
{
|
|
auto &sharedDLL = *itr;
|
|
|
|
AuString a = dir + AuString({ AuFS::kPathSplitter }) + sharedDLL;
|
|
|
|
#if defined(AURORA_IS_MODERNNT_DERIVED)
|
|
AuString aAbs = dir + AuString({ AuFS::kPathSplitter }) + sharedDLL + ".";
|
|
#endif
|
|
|
|
#if defined(AURORA_IS_MODERNNT_DERIVED)
|
|
if (GetProcHandle(aAbs))
|
|
#else
|
|
if (GetProcHandle(a))
|
|
#endif
|
|
{
|
|
itr++;
|
|
continue;
|
|
}
|
|
|
|
auto modName = GetModuleNameFromFileName(sharedDLL);
|
|
AuLogDbg("[attempt] Loading shared object: {} (path: {})", modName, sharedDLL);
|
|
|
|
bool fail {};
|
|
ModuleLoadRequest request { AuList<AuString>{ dir }, modName };
|
|
|
|
if (TryLoadModule(a,
|
|
#if defined(AURORA_IS_MODERNNT_DERIVED)
|
|
aAbs,
|
|
#endif
|
|
request,
|
|
fail
|
|
))
|
|
{
|
|
if (!fail)
|
|
{
|
|
AuLogDbg("[attempt] Loaded shared object: {} (path: {})", modName, sharedDLL);
|
|
uSuccess++;
|
|
itr = sharedObjects.erase(itr);
|
|
}
|
|
else
|
|
{
|
|
itr++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
itr++;
|
|
}
|
|
}
|
|
}
|
|
while (uSuccess);
|
|
}
|
|
}
|
|
|
|
#if defined(AURORA_PLATFORM_WIN32)
|
|
for (const auto pCookie : AuExchange(cookieList, {}))
|
|
{
|
|
if (pRemoveDllDirectory)
|
|
{
|
|
if (pCookie)
|
|
{
|
|
pRemoveDllDirectory(pCookie);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void PreloadDLLs(const AuString &dir)
|
|
{
|
|
AU_DEBUG_MEMCRUNCH;
|
|
if (gRuntimeConfig.processConfig.bAlwaysPreloadEntireClassPath)
|
|
{
|
|
PreloadDLLsDoOnce(gClassPath);
|
|
}
|
|
else
|
|
{
|
|
PreloadDLLsDoOnce({ dir });
|
|
}
|
|
}
|
|
|
|
AUKN_SYM bool SetBinaryClassPath(const AuList<AuString> &list, bool preloadAll)
|
|
{
|
|
AU_DEBUG_MEMCRUNCH;
|
|
AU_LOCK_GUARD(gSpinLock);
|
|
AuExchange(gClassPath, list);
|
|
|
|
if (((preloadAll && gRuntimeConfig.processConfig.bEnablePreload)) ||
|
|
(gRuntimeConfig.processConfig.bForcePreload))
|
|
{
|
|
if (gRuntimeConfig.processConfig.bAlwaysPreloadEntireClassPath)
|
|
{
|
|
PreloadDLLsDoOnce(gClassPath);
|
|
}
|
|
else
|
|
{
|
|
PreloadDLLsDoOnce(list);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
AUKN_SYM bool AddBinaryClassPath(const AuString &dir, bool preloadAll)
|
|
{
|
|
AU_LOCK_GUARD(gSpinLock);
|
|
|
|
if (!AuTryInsert(gClassPath, dir))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (((preloadAll && gRuntimeConfig.processConfig.bEnablePreload)) ||
|
|
(gRuntimeConfig.processConfig.bForcePreload))
|
|
{
|
|
PreloadDLLs(dir);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
AUKN_SYM AuList<AuString> GetBinaryClassPath()
|
|
{
|
|
AU_LOCK_GUARD(gSpinLock);
|
|
return gClassPath;
|
|
}
|
|
|
|
void InitProcess()
|
|
{
|
|
// TODO (reece): test if self is signed -> xref kIsMainSigned
|
|
|
|
InitProcessMap();
|
|
|
|
#if defined(AURORA_IS_MODERNNT_DERIVED)
|
|
LoadProcessSectionViewSymbol();
|
|
#endif
|
|
}
|
|
|
|
void DeinitProcess()
|
|
{
|
|
DeinitProcessMap();
|
|
}
|
|
} |