1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 #ifndef CHROME_FRAME_NT_LOADER_H_ 5 #define CHROME_FRAME_NT_LOADER_H_ 6 7 #include <windows.h> 8 #include <winnt.h> 9 #include <winternl.h> 10 11 namespace nt_loader { 12 13 // These structures are gleaned from public symbol information. 14 struct _PEB; 15 struct _PEB_LDR_DATA; 16 struct _RTL_USER_PROCESS_PARAMETERS; 17 struct _PEB_FREE_BLOCK; 18 19 20 typedef struct _NT_TIB { 21 _EXCEPTION_REGISTRATION_RECORD* ExceptionList; // 0x000 22 void *StackBase; // 0x004 23 void* StackLimit; // 0x008 24 void* SubSystemTib; // 0x00c 25 union { 26 void *FiberData; // 0x010 27 DWORD Version; // 0x010 28 }; 29 void* ArbitraryUserPointer; // 0x014 30 _NT_TIB* Self; // 0x018 31 } _NT_TIB, NT_TIB; 32 33 typedef struct _CLIENT_ID { 34 void* UniqueProcess; // 0x000 35 void* UniqueThread; // 0x004 36 } _CLIENT_ID, CLIENT_ID; 37 38 typedef struct _TEB { 39 _NT_TIB NtTib; // 0x000 40 void* EnvironmentPointer; // 0x01c 41 _CLIENT_ID ClientId; // 0x020 42 void* ActiveRpcHandle; // 0x028 43 void* ThreadLocalStoragePointer; // 0x02c 44 _PEB* ProcessEnvironmentBlock; // 0x030 45 // There is more in a TEB, but this is all we need. 46 } _TEB, TEB; 47 48 typedef struct _PEB { 49 BYTE InheritedAddressSpace; // 0x000 50 BYTE ReadImageFileExecOptions; // 0x001 51 BYTE BeingDebugged; // 0x002 52 BYTE SpareBool; // 0x003 53 void* Mutant; // 0x004 54 void* ImageBaseAddress; // 0x008 55 _PEB_LDR_DATA* Ldr; // 0x00c 56 _RTL_USER_PROCESS_PARAMETERS* ProcessParameters; // 0x010 57 void* SubSystemData; // 0x014 58 void* ProcessHeap; // 0x018 59 _RTL_CRITICAL_SECTION* FastPebLock; // 0x01c 60 void* FastPebLockRoutine; // 0x020 61 void* FastPebUnlockRoutine; // 0x024 62 ULONG EnvironmentUpdateCount; // 0x028 63 void* KernelCallbackTable; // 0x02c 64 ULONG SystemReserved[1]; // 0x030 65 ULONG AtlThunkSListPtr32; // 0x034 66 _PEB_FREE_BLOCK* FreeList; // 0x038 67 ULONG TlsExpansionCounter; // 0x03c 68 void* TlsBitmap; // 0x040 69 ULONG TlsBitmapBits[2]; // 0x044 70 void* ReadOnlySharedMemoryBase; // 0x04c 71 void* ReadOnlySharedMemoryHeap; // 0x050 72 void** ReadOnlyStaticServerData; // 0x054 73 void* AnsiCodePageData; // 0x058 74 void* OemCodePageData; // 0x05c 75 void* UnicodeCaseTableData; // 0x060 76 ULONG NumberOfProcessors; // 0x064 77 ULONG NtGlobalFlag; // 0x068 78 _LARGE_INTEGER CriticalSectionTimeout; // 0x070 79 ULONG HeapSegmentReserve; // 0x078 80 ULONG HeapSegmentCommit; // 0x07c 81 ULONG HeapDeCommitTotalFreeThreshold; // 0x080 82 ULONG HeapDeCommitFreeBlockThreshold; // 0x084 83 ULONG NumberOfHeaps; // 0x088 84 ULONG MaximumNumberOfHeaps; // 0x08c 85 void** ProcessHeaps; // 0x090 86 void* GdiSharedHandleTable; // 0x094 87 void* ProcessStarterHelper; // 0x098 88 ULONG GdiDCAttributeList; // 0x09c 89 RTL_CRITICAL_SECTION* LoaderLock; // 0x0a0 90 // There is more in a PEB, but this is all we need. 91 } _PEB, PEB; 92 93 struct _PEB_LDR_DATA { 94 ULONG Length; // 0x000 95 BYTE Initialized; // 0x004 96 void* SsHandle; // 0x008 97 LIST_ENTRY InLoadOrderModuleList; // 0x00c 98 LIST_ENTRY InMemoryOrderModuleList; // 0x014 99 LIST_ENTRY InInitializationOrderModuleList; // 0x01c 100 // There is more data in this structure, but this is all we need. 101 }; 102 103 // These flags are gleaned from the !dlls Windbg extension. 104 #define LDRP_STATIC_LINK 0x00000002 105 #define LDRP_IMAGE_DLL 0x00000004 106 #define LDRP_LOAD_IN_PROGRESS 0x00001000 107 #define LDRP_UNLOAD_IN_PROGRESS 0x00002000 108 #define LDRP_ENTRY_PROCESSED 0x00004000 109 #define LDRP_DONT_CALL_FOR_THREADS 0x00040000 110 #define LDRP_PROCESS_ATTACH_CALLED 0x00080000 111 #define LDRP_COR_IMAGE 0x00400000 112 #define LDRP_COR_OWNS_UNMAP 0x00800000 113 #define LDRP_COR_IL_ONLY 0x01000000 114 #define LDRP_REDIRECTED 0x10000000 115 116 typedef struct _LDR_DATA_TABLE_ENTRY { 117 LIST_ENTRY InLoadOrderLinks; // 0x000 118 LIST_ENTRY InMemoryOrderLinks; // 0x008 119 LIST_ENTRY InInitializationOrderLinks; // 0x010 120 void* DllBase; // 0x018 121 void* EntryPoint; // 0x01c 122 ULONG SizeOfImage; // 0x020 123 UNICODE_STRING FullDllName; // 0x024 124 UNICODE_STRING BaseDllName; // 0x02c 125 ULONG Flags; // 0x034 126 USHORT LoadCount; // 0x038 127 USHORT TlsIndex; // 0x03a 128 union { 129 LIST_ENTRY HashLinks; // 0x03c 130 struct { 131 void* SectionPointer; // 0x03c 132 ULONG CheckSum; // 0x040 133 }; 134 }; 135 union { 136 ULONG TimeDateStamp; // 0x044 137 void* LoadedImports; // 0x044 138 }; 139 void *EntryPointActivationContext; // 0x048 140 void* PatchInformation; // 0x04c 141 } _LDR_DATA_TABLE_ENTRY, LDR_DATA_TABLE_ENTRY; 142 143 // Retrieves the current thread's TEB. 144 inline TEB* GetCurrentTeb() { 145 return reinterpret_cast<TEB*>(NtCurrentTeb()); 146 } 147 148 // Retrieves the current process' PEB. 149 inline PEB* GetCurrentPeb() { 150 return GetCurrentTeb()->ProcessEnvironmentBlock; 151 } 152 153 // Returns true iff the current thread owns critsec. 154 inline bool OwnsCriticalSection(CRITICAL_SECTION* critsec) { 155 return reinterpret_cast<DWORD>(critsec->OwningThread) == 156 GetCurrentThreadId(); 157 } 158 159 // Finds a loader table entry for module. 160 // Note: must hold the loader's lock on entry. 161 LDR_DATA_TABLE_ENTRY* GetLoaderEntry(HMODULE module); 162 163 // Returns the loader's lock. 164 inline CRITICAL_SECTION* GetLoaderLock() { 165 return GetCurrentPeb()->LoaderLock; 166 } 167 168 // Returns true iff the current thread owns the loader's lock on call. 169 inline bool OwnsLoaderLock() { 170 return OwnsCriticalSection(GetLoaderLock()); 171 } 172 173 } // namespace nt_loader 174 175 #endif // CHROME_FRAME_NT_LOADER_H_ 176
