UEFITool/common/ffsutils.cpp
vit9696 1ac6e6a4f0 Multiple improvements and bugfixes
1. Fixes #158, UEFITool and UEFIFind failed to lookup pattern crossing header/body boundary
2. Fixes #159, filter out more symbols in fileanems, which are prohibited by different filesystems
3. Add more known file GUIDs
4. Add basic support for FMP images
5. Fix unaligned read in uint24ToUint32
6. Fix compilation with latest cmake requiring directory path
2019-01-20 13:23:28 +03:00

89 lines
3.0 KiB
C++

/* ffsutils.cpp
Copyright (c) 2019, LongSoft. All rights reserved.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
*/
#include "ffsutils.h"
#include "utility.h"
#include "ffs.h"
namespace FfsUtils {
USTATUS findFileRecursive(TreeModel *model, const UModelIndex index, const UString & hexPattern, const UINT8 mode, std::set<std::pair<UModelIndex, UModelIndex> > & files)
{
if (!index.isValid())
return U_SUCCESS;
if (hexPattern.isEmpty())
return U_INVALID_PARAMETER;
const char *hexPatternRaw = hexPattern.toLocal8Bit();
std::vector<UINT8> pattern, patternMask;
if (!makePattern(hexPatternRaw, pattern, patternMask))
return U_INVALID_PARAMETER;
// Check for "all substrings" pattern
size_t count = 0;
for (size_t i = 0; i < patternMask.size(); i++)
if (patternMask[i] == 0)
count++;
if (count == patternMask.size())
return U_SUCCESS;
bool hasChildren = (model->rowCount(index) > 0);
for (int i = 0; i < model->rowCount(index); i++) {
findFileRecursive(model, index.child(i, index.column()), hexPattern, mode, files);
}
UByteArray data;
if (hasChildren) {
if (mode == SEARCH_MODE_HEADER)
data = model->header(index);
else if (mode == SEARCH_MODE_ALL)
data = model->header(index) + model->body(index);
}
else {
if (mode == SEARCH_MODE_HEADER)
data = model->header(index);
else if (mode == SEARCH_MODE_BODY)
data = model->body(index);
else
data = model->header(index) + model->body(index);
}
const UINT8 *rawData = reinterpret_cast<const UINT8 *>(data.constData());
INTN offset = findPattern(pattern.data(), patternMask.data(), pattern.size(), rawData, data.size(), 0);
// For patterns that cross header|body boundary, skip patterns entirely located in body, since
// children search above has already found them.
if (hasChildren && mode == SEARCH_MODE_ALL && offset >= model->header(index).size()) {
offset = -1;
}
if (offset >= 0) {
if (model->type(index) != Types::File) {
UModelIndex ffs = model->findParentOfType(index, Types::File);
if (model->type(index) == Types::Section && model->subtype(index) == EFI_SECTION_FREEFORM_SUBTYPE_GUID)
files.insert(std::pair<UModelIndex, UModelIndex>(ffs, index));
else
files.insert(std::pair<UModelIndex, UModelIndex>(ffs, UModelIndex()));
}
else {
files.insert(std::pair<UModelIndex, UModelIndex>(index, UModelIndex()));
}
}
return U_SUCCESS;
}
};