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setupapi: Get rid of the code to build fake dlls from existing modules.

oldstable
Alexandre Julliard 2009-10-14 17:07:32 +02:00
parent 87894c5f7b
commit f1dc1d35a0
1 changed files with 21 additions and 99 deletions
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120
dlls/setupapi/fakedll.c
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@ -105,82 +105,11 @@ static inline void add_directory( struct dll_info *info, unsigned int idx, DWORD
info->nt->OptionalHeader.DataDirectory[idx].Size = size;
}
/* find the limits of the resource data */
static void get_resource_data( const IMAGE_RESOURCE_DIRECTORY *dir, const BYTE *root,
DWORD *rva_start, DWORD *rva_end )
{
const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
int i;
entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
for (i = 0; i < dir->NumberOfNamedEntries + dir->NumberOfIdEntries; i++, entry++)
{
const void *ptr = root + entry->u2.s3.OffsetToDirectory;
if (entry->u2.s3.DataIsDirectory) get_resource_data( ptr, root, rva_start, rva_end );
else
{
const IMAGE_RESOURCE_DATA_ENTRY *data = ptr;
*rva_start = min( *rva_start, data->OffsetToData );
*rva_end = max( *rva_end, data->OffsetToData + data->Size );
}
}
}
/* fixup RVAs of resource data */
static void fixup_resources( IMAGE_RESOURCE_DIRECTORY *dir, BYTE *root, int delta )
{
IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
int i;
entry = (IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
for (i = 0; i < dir->NumberOfNamedEntries + dir->NumberOfIdEntries; i++, entry++)
{
void *ptr = root + entry->u2.s3.OffsetToDirectory;
if (entry->u2.s3.DataIsDirectory) fixup_resources( ptr, root, delta );
else
{
IMAGE_RESOURCE_DATA_ENTRY *data = ptr;
if (data->OffsetToData) data->OffsetToData += delta;
}
}
}
/* add version resources to the dll by copying them from the source module */
static BOOL add_version_resource( HMODULE module, struct dll_info *dll_info )
{
BOOL ret = FALSE;
DWORD rva_start = ~0U, rva_end = 0, dir_size, total_size;
const IMAGE_RESOURCE_DIRECTORY *basedir;
const BYTE *data_start, *root;
BYTE *buffer;
if (!module) return TRUE;
if (LdrFindResourceDirectory_U( module, NULL, 0, &basedir ) != STATUS_SUCCESS) return TRUE;
root = (const BYTE *)basedir;
get_resource_data( basedir, root, &rva_start, &rva_end );
data_start = (const BYTE *)module + rva_start;
if (data_start <= root) return FALSE;
dir_size = data_start - root;
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, dir_size ))) return FALSE;
memcpy( buffer, root, dir_size );
fixup_resources( (IMAGE_RESOURCE_DIRECTORY *)buffer, buffer, dll_info->mem_pos + dir_size - rva_start );
if (!xwrite( dll_info, buffer, dir_size, dll_info->file_pos )) goto done;
if (!xwrite( dll_info, data_start, rva_end - rva_start, dll_info->file_pos + dir_size )) goto done;
total_size = dir_size + rva_end - rva_start;
add_directory( dll_info, IMAGE_DIRECTORY_ENTRY_RESOURCE, dll_info->mem_pos, total_size );
add_section( dll_info, ".rsrc", total_size, IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ );
ret = TRUE;
done:
HeapFree( GetProcessHeap(), 0, buffer );
return ret;
}
/* build a complete fake dll, optionally using module as a source */
static BOOL build_fake_dll( HANDLE file, HMODULE module )
/* build a complete fake dll from scratch */
static BOOL build_fake_dll( HANDLE file )
{
IMAGE_DOS_HEADER *dos;
IMAGE_NT_HEADERS *nt;
const IMAGE_NT_HEADERS *src_nt = NULL;
struct dll_info info;
BYTE *buffer;
BOOL ret = FALSE;
@ -204,28 +133,25 @@ static BOOL build_fake_dll( HANDLE file, HMODULE module )
memcpy( dos + 1, fakedll_signature, sizeof(fakedll_signature) );
nt = info.nt = (IMAGE_NT_HEADERS *)(buffer + lfanew);
if (module) src_nt = RtlImageNtHeader( module );
/* some fields are copied from the source dll */
#define SET(field,def) nt->field = src_nt ? src_nt->field : def
SET( FileHeader.Machine, IMAGE_FILE_MACHINE_I386 );
SET( FileHeader.TimeDateStamp, 0 );
SET( FileHeader.Characteristics, IMAGE_FILE_DLL );
SET( OptionalHeader.MajorLinkerVersion, 1 );
SET( OptionalHeader.MinorLinkerVersion, 0 );
SET( OptionalHeader.MajorOperatingSystemVersion, 1 );
SET( OptionalHeader.MinorOperatingSystemVersion, 0 );
SET( OptionalHeader.MajorImageVersion, 1 );
SET( OptionalHeader.MinorImageVersion, 0 );
SET( OptionalHeader.MajorSubsystemVersion, 4 );
SET( OptionalHeader.MinorSubsystemVersion, 0 );
SET( OptionalHeader.Win32VersionValue, 0 );
SET( OptionalHeader.Subsystem, IMAGE_SUBSYSTEM_WINDOWS_GUI );
SET( OptionalHeader.DllCharacteristics, 0 );
SET( OptionalHeader.SizeOfStackReserve, 0 );
SET( OptionalHeader.SizeOfStackCommit, 0 );
SET( OptionalHeader.SizeOfHeapReserve, 0 );
SET( OptionalHeader.SizeOfHeapCommit, 0 );
#undef SET
nt->FileHeader.Machine = IMAGE_FILE_MACHINE_I386;
nt->FileHeader.TimeDateStamp = 0;
nt->FileHeader.Characteristics = IMAGE_FILE_DLL;
nt->OptionalHeader.MajorLinkerVersion = 1;
nt->OptionalHeader.MinorLinkerVersion = 0;
nt->OptionalHeader.MajorOperatingSystemVersion = 1;
nt->OptionalHeader.MinorOperatingSystemVersion = 0;
nt->OptionalHeader.MajorImageVersion = 1;
nt->OptionalHeader.MinorImageVersion = 0;
nt->OptionalHeader.MajorSubsystemVersion = 4;
nt->OptionalHeader.MinorSubsystemVersion = 0;
nt->OptionalHeader.Win32VersionValue = 0;
nt->OptionalHeader.Subsystem = IMAGE_SUBSYSTEM_WINDOWS_GUI;
nt->OptionalHeader.DllCharacteristics = 0;
nt->OptionalHeader.SizeOfStackReserve = 0;
nt->OptionalHeader.SizeOfStackCommit = 0;
nt->OptionalHeader.SizeOfHeapReserve = 0;
nt->OptionalHeader.SizeOfHeapCommit = 0;
/* other fields have fixed values */
nt->Signature = IMAGE_NT_SIGNATURE;
nt->FileHeader.NumberOfSections = 0;
@ -261,8 +187,6 @@ static BOOL build_fake_dll( HANDLE file, HMODULE module )
add_section( &info, ".reloc", sizeof(reloc_section),
IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_DISCARDABLE | IMAGE_SCN_MEM_READ );
if (!add_version_resource( module, &info )) goto done;
header_size += nt->FileHeader.NumberOfSections * sizeof(IMAGE_SECTION_HEADER);
nt->OptionalHeader.SizeOfHeaders = ALIGN( header_size, file_alignment );
nt->OptionalHeader.SizeOfImage = ALIGN( info.mem_pos, section_alignment );
@ -454,10 +378,8 @@ BOOL create_fake_dll( const WCHAR *name, const WCHAR *source )
}
else
{
HMODULE module = LoadLibraryW( source );
WARN( "fake dll %s not found for %s\n", debugstr_w(source), debugstr_w(name) );
ret = build_fake_dll( h, module );
if (module) FreeLibrary( module );
ret = build_fake_dll( h );
}
CloseHandle( h );