+++ /dev/null
-/*
- * assembly parser
- *
- * Copyright 2008 James Hawkins
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
- */
-
-#include "mscoree_private.h"
-
-#include <winver.h>
-#include <dbghelp.h>
-
-typedef struct
-{
- ULONG Signature;
- USHORT MajorVersion;
- USHORT MinorVersion;
- ULONG Reserved;
- ULONG VersionLength;
- LPSTR Version;
- BYTE Flags;
- WORD Streams;
-} METADATAHDR;
-
-typedef struct
-{
- DWORD Offset;
- DWORD Size;
-} METADATASTREAMHDR;
-
-typedef struct tagCLRTABLE
-{
- INT rows;
- DWORD offset;
-} CLRTABLE;
-
-struct tagASSEMBLY
-{
- int is_mapped_file;
-
- /* mapped files */
- LPWSTR path;
- HANDLE hfile;
- HANDLE hmap;
-
- BYTE *data;
-
- IMAGE_NT_HEADERS *nthdr;
- IMAGE_COR20_HEADER *corhdr;
-
- METADATAHDR *metadatahdr;
-};
-
-static inline LPWSTR strdupW(LPCWSTR src)
-{
- LPWSTR dest;
-
- if (!src)
- return NULL;
-
- dest = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(src) + 1) * sizeof(WCHAR));
- if (dest)
- lstrcpyW(dest, src);
-
- return dest;
-}
-
-static void* assembly_rva_to_va(ASSEMBLY *assembly, ULONG rva)
-{
- if (assembly->is_mapped_file)
- return ImageRvaToVa(assembly->nthdr, assembly->data, rva, NULL);
- else
- return assembly->data + rva;
-}
-
-static ULONG assembly_datadir_get_data(ASSEMBLY *assembly,
- IMAGE_DATA_DIRECTORY *datadir, void **data)
-{
- if (!datadir->VirtualAddress || !datadir->Size)
- {
- *data = NULL;
- return 0;
- }
- else
- {
- *data = assembly_rva_to_va(assembly, datadir->VirtualAddress);
- return datadir->Size;
- }
-}
-
-static HRESULT parse_metadata_header(ASSEMBLY *assembly, DWORD *hdrsz)
-{
- METADATAHDR *metadatahdr;
- BYTE *ptr, *dest;
- DWORD size, ofs;
- ULONG rva;
-
- rva = assembly->corhdr->MetaData.VirtualAddress;
- ptr = assembly_rva_to_va(assembly, rva);
- if (!ptr)
- return E_FAIL;
-
- metadatahdr = (METADATAHDR *)ptr;
-
- assembly->metadatahdr = HeapAlloc(GetProcessHeap(), 0, sizeof(METADATAHDR));
- if (!assembly->metadatahdr)
- return E_OUTOFMEMORY;
-
- size = FIELD_OFFSET(METADATAHDR, Version);
- memcpy(assembly->metadatahdr, metadatahdr, size);
-
- assembly->metadatahdr->Version = (LPSTR)&metadatahdr->Version;
-
- ofs = FIELD_OFFSET(METADATAHDR, Flags);
- ptr += FIELD_OFFSET(METADATAHDR, Version) + metadatahdr->VersionLength + 1;
- dest = (BYTE *)assembly->metadatahdr + ofs;
- memcpy(dest, ptr, sizeof(METADATAHDR) - ofs);
-
- *hdrsz = sizeof(METADATAHDR) - sizeof(LPSTR) + metadatahdr->VersionLength + 1;
-
- return S_OK;
-}
-
-static HRESULT parse_clr_metadata(ASSEMBLY *assembly)
-{
- HRESULT hr;
- DWORD hdrsz;
-
- hr = parse_metadata_header(assembly, &hdrsz);
- if (FAILED(hr))
- return hr;
-
- return S_OK;
-}
-
-static HRESULT parse_pe_header(ASSEMBLY *assembly)
-{
- IMAGE_DATA_DIRECTORY *datadirs;
-
- assembly->nthdr = ImageNtHeader(assembly->data);
- if (!assembly->nthdr)
- return E_FAIL;
-
- if (assembly->nthdr->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC)
- {
- IMAGE_OPTIONAL_HEADER64 *opthdr =
- (IMAGE_OPTIONAL_HEADER64 *)&assembly->nthdr->OptionalHeader;
- datadirs = opthdr->DataDirectory;
- }
- else
- {
- IMAGE_OPTIONAL_HEADER32 *opthdr =
- (IMAGE_OPTIONAL_HEADER32 *)&assembly->nthdr->OptionalHeader;
- datadirs = opthdr->DataDirectory;
- }
-
- if (!datadirs)
- return E_FAIL;
-
- if (!assembly_datadir_get_data(assembly, &datadirs[IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR], (void**)&assembly->corhdr))
- return E_FAIL;
-
- return S_OK;
-}
-
-static HRESULT parse_headers(ASSEMBLY *assembly)
-{
- HRESULT hr;
-
- hr = parse_pe_header(assembly);
-
- if (SUCCEEDED(hr))
- hr = parse_clr_metadata(assembly);
-
- return hr;
-}
-
-HRESULT assembly_create(ASSEMBLY **out, LPCWSTR file)
-{
- ASSEMBLY *assembly;
- HRESULT hr;
-
- *out = NULL;
-
- assembly = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(ASSEMBLY));
- if (!assembly)
- return E_OUTOFMEMORY;
-
- assembly->is_mapped_file = 1;
-
- assembly->path = strdupW(file);
- if (!assembly->path)
- {
- hr = E_OUTOFMEMORY;
- goto failed;
- }
-
- assembly->hfile = CreateFileW(file, GENERIC_READ, FILE_SHARE_READ,
- NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
- if (assembly->hfile == INVALID_HANDLE_VALUE)
- {
- hr = HRESULT_FROM_WIN32(GetLastError());
- goto failed;
- }
-
- assembly->hmap = CreateFileMappingW(assembly->hfile, NULL, PAGE_READONLY,
- 0, 0, NULL);
- if (!assembly->hmap)
- {
- hr = HRESULT_FROM_WIN32(GetLastError());
- goto failed;
- }
-
- assembly->data = MapViewOfFile(assembly->hmap, FILE_MAP_READ, 0, 0, 0);
- if (!assembly->data)
- {
- hr = HRESULT_FROM_WIN32(GetLastError());
- goto failed;
- }
-
- hr = parse_headers(assembly);
- if (FAILED(hr)) goto failed;
-
- *out = assembly;
- return S_OK;
-
-failed:
- assembly_release(assembly);
- return hr;
-}
-
-HRESULT assembly_from_hmodule(ASSEMBLY **out, HMODULE hmodule)
-{
- ASSEMBLY *assembly;
- HRESULT hr;
-
- *out = NULL;
-
- assembly = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(ASSEMBLY));
- if (!assembly)
- return E_OUTOFMEMORY;
-
- assembly->is_mapped_file = 0;
-
- assembly->data = (BYTE*)hmodule;
-
- hr = parse_headers(assembly);
- if (SUCCEEDED(hr))
- *out = assembly;
- else
- assembly_release(assembly);
-
- return hr;
-}
-
-HRESULT assembly_release(ASSEMBLY *assembly)
-{
- if (!assembly)
- return S_OK;
-
- if (assembly->is_mapped_file)
- {
- UnmapViewOfFile(assembly->data);
- CloseHandle(assembly->hmap);
- CloseHandle(assembly->hfile);
- }
- HeapFree(GetProcessHeap(), 0, assembly->metadatahdr);
- HeapFree(GetProcessHeap(), 0, assembly->path);
- HeapFree(GetProcessHeap(), 0, assembly);
-
- return S_OK;
-}
-
-HRESULT assembly_get_runtime_version(ASSEMBLY *assembly, LPSTR *version)
-{
- *version = assembly->metadatahdr->Version;
-
- return S_OK;
-}
-
-HRESULT assembly_get_vtable_fixups(ASSEMBLY *assembly, VTableFixup **fixups, DWORD *count)
-{
- ULONG size;
-
- size = assembly_datadir_get_data(assembly, &assembly->corhdr->VTableFixups, (void**)fixups);
- *count = size / sizeof(VTableFixup);
-
- return S_OK;
-}
projects / reactos.git / blobdiff