blob: 4651a66ef901ef847539a011c57a8417c4932583 [file] [log] [blame]
// Copyright 2015 The Crashpad Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "snapshot/win/process_subrange_reader.h"
#include "base/logging.h"
#include "base/numerics/safe_conversions.h"
#include "snapshot/win/process_reader_win.h"
namespace crashpad {
ProcessSubrangeReader::ProcessSubrangeReader()
: name_(),
range_(),
process_reader_(nullptr) {
}
ProcessSubrangeReader::~ProcessSubrangeReader() {
}
bool ProcessSubrangeReader::Initialize(ProcessReaderWin* process_reader,
WinVMAddress base,
WinVMSize size,
const std::string& name) {
INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
if (!InitializeInternal(process_reader, base, size, name)) {
return false;
}
INITIALIZATION_STATE_SET_VALID(initialized_);
return true;
}
bool ProcessSubrangeReader::InitializeSubrange(
const ProcessSubrangeReader& that,
WinVMAddress base,
WinVMSize size,
const std::string& sub_name) {
INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
INITIALIZATION_STATE_DCHECK_VALID(that.initialized_);
if (!InitializeInternal(
that.process_reader_, base, size, that.name_ + " " + sub_name)) {
return false;
}
if (!that.range_.ContainsRange(range_)) {
LOG(WARNING) << "range " << range_.AsString() << " outside of range "
<< that.range_.AsString() << " for " << name_;
return false;
}
INITIALIZATION_STATE_SET_VALID(initialized_);
return true;
}
bool ProcessSubrangeReader::ReadMemory(WinVMAddress address,
WinVMSize size,
void* into) const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
CheckedWinAddressRange read_range(process_reader_->Is64Bit(), address, size);
if (!read_range.IsValid()) {
LOG(WARNING) << "invalid read range " << read_range.AsString();
return false;
}
if (!range_.ContainsRange(read_range)) {
LOG(WARNING) << "attempt to read outside of " << name_ << " range "
<< range_.AsString() << " at range " << read_range.AsString();
return false;
}
return process_reader_->Memory()->Read(
address, base::checked_cast<size_t>(size), into);
}
bool ProcessSubrangeReader::InitializeInternal(ProcessReaderWin* process_reader,
WinVMAddress base,
WinVMSize size,
const std::string& name) {
range_.SetRange(process_reader->Is64Bit(), base, size);
if (!range_.IsValid()) {
LOG(WARNING) << "invalid range " << range_.AsString() << " for " << name;
return false;
}
name_ = name;
process_reader_ = process_reader;
return true;
}
} // namespace crashpad