--- /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