在VBAProject中,dir流保存了一些VBA代码的重要信息,所以解析VBAProject的时候一并进行了解析。
dir流的结构请参考官方文档的2.3.4.2 dir Stream。
这里主要解析VBA模块的3个信息:
代码语言:javascript复制Public Enum ModuleTypeEnum
ProceduralModule = &H21
ClassModule = &H22 'document module, class module, or designer module
End Enum
Public Type ModuleInfo
SName As String
Offset As Long
IType As ModuleTypeEnum
End Type
Offset:VBA代码在具体的模块流中起始的位置。
实现代码:
代码语言:javascript复制Function GetModuleInfo(DirBytes() As Byte, ret() As ModuleInfo) As String
Dim iLen As Long
Dim p As Long
iLen = UBound(DirBytes) - LBound(DirBytes) 1
' type projectModules struct {
' Id int16 // 必须是0x000f
' Size int32 // 必须是 0x00000002
' Count int16
' Project_Cookie projectCookie // 8 bytes
' //Modules
' }
' type projectCookie struct {
' Id int16 // 必须是0x0013
' Size int32 // 必须是 0x00000002
' Cookie int16 // MUST be ignored on read. MUST be 0xFFFF on write
' }
Do While 1
If DirBytes(p) = &HF And DirBytes(p 1) = &H0 Then 'projectModules.Id = 0x000f
If (DirBytes(p 2) = &H2) And ((DirBytes(p 3) Or DirBytes(p 4) Or DirBytes(p 5)) = &H0) Then 'projectModules.Size = 0x00000002
If DirBytes(p 8) = &H13 And DirBytes(p 9) = &H0 Then 'projectCookie.Id = 0x0013
If (DirBytes(p 10) = &H2) And ((DirBytes(p 11) Or DirBytes(p 12) Or DirBytes(p 13)) = &H0) Then 'projectModules.Size = 0x00000002
Exit Do
Else
GoTo pAdd
End If
Else
GoTo pAdd
End If
Else
GoTo pAdd
End If 'projectModules.Size = 0x00000002
Else 'projectModules.Id = 0x000f
pAdd:
p = p 1
If p > iLen - 16 Then
GetModuleInfo = "DIR流:不符合dir格式。"
Exit Function
End If
End If
Loop
'模块数量
Dim moduleCount As Integer
moduleCount = Bytes2Int(DirBytes, p 6)
ReDim ret(moduleCount - 1) As ModuleInfo
p = p 16
Dim i As Long, j As Long
Dim ModuleNameLen As Long
Dim ModuleName() As Byte
For i = 0 To moduleCount - 1
' type moduleName struct {
' Id int16 // 必须是0x0019
' SizeOfModuleName int32
' // Dim ModuleName() As Byte
' }
Do While Not (DirBytes(p) = &H19 And DirBytes(p 1) = &H0)
p = p 1
If p > iLen - 1 Then
GetModuleInfo = "DIR流:解析moduleName出错了。"
Exit Function
End If
Loop
p = p 2
ModuleNameLen = Bytes2Long(DirBytes, p)
p = p 4
p = p ModuleNameLen
' type moduleNameUnicode struct {
' Id int16 // 必须是0x0047
' SizeOfModuleNameUnicode int32
' // Dim ModuleNameUnicode() As Byte
' }
p = p 2
ModuleNameLen = Bytes2Long(DirBytes, p)
p = p 4
ReDim ModuleName(ModuleNameLen - 1) As Byte
For j = 0 To ModuleNameLen - 1
ModuleName(j) = DirBytes(p j)
Next
p = p ModuleNameLen
ret(i).SName = ModuleName
' type moduleStreamName struct {
' Id int16 // 必须是0x001A
' SizeOfStreamName int32
' // Dim StreamName() As Byte
' }
p = p 2
ModuleNameLen = Bytes2Long(DirBytes, p)
p = p 4
p = p ModuleNameLen
' type moduleStreamNameUnicode struct {
' Reserved int16
' SizeOfStreamNameUnicode int32
' // Dim StreamNameUnicode() As Byte
' }
p = p 2
ModuleNameLen = Bytes2Long(DirBytes, p)
p = p 4
p = p ModuleNameLen
' type moduleStreamNameUnicode struct {
' Reserved int16
' SizeOfStreamNameUnicode int32
' // Dim StreamNameUnicode() As Byte
' }
p = p 2
ModuleNameLen = Bytes2Long(DirBytes, p)
p = p 4
p = p ModuleNameLen
' type moduleDocStringUnicode struct {
' Reserved int16
' SizeOfDocStringUnicode int32
' // Dim DocStringUnicode() As Byte
' }
p = p 2
ModuleNameLen = Bytes2Long(DirBytes, p)
p = p 4
p = p ModuleNameLen
' type moduleOffset struct {
' Id int16 // 必须是0x0031
' Size int32
' TextOffset int32
' }
p = p 2
ModuleNameLen = Bytes2Long(DirBytes, p)
p = p 4
ret(i).Offset = Bytes2Long(DirBytes, p)
p = p 4
' type moduleHelpContext struct {
' Id int16 // 必须是0x001E
' Size int32
' HelpContext int32
' }
p = p 2
p = p 4
p = p 4
' type moduleCookie struct {
' Id int16 // 必须是0x002C
' Size int32 // 必须是 0x00000002
' Cookie int16 // MUST be 0xFFFF on write
' }
p = p 2
p = p 4
p = p 2
' type moduleType struct {
' Id int16 // '0x0021 procedural module
' // '0x0022 document module, class module, or designer module
' Reserved int32 //'必须是 0x00000000。必须忽略
' }
ret(i).IType = Bytes2Int(DirBytes, p)
p = p 2
p = p 4
Next
End Function