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// 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/minidump/module_snapshot_minidump.h"
#include <stddef.h>
#include <string.h>
#include "base/check_op.h"
#include "base/logging.h"
#include "base/notreached.h"
#include "minidump/minidump_extensions.h"
#include "snapshot/minidump/minidump_annotation_reader.h"
#include "snapshot/minidump/minidump_simple_string_dictionary_reader.h"
#include "snapshot/minidump/minidump_string_list_reader.h"
#include "snapshot/minidump/minidump_string_reader.h"
#include "util/misc/pdb_structures.h"
namespace crashpad {
namespace internal {
ModuleSnapshotMinidump::ModuleSnapshotMinidump()
: ModuleSnapshot(),
minidump_module_(),
annotations_vector_(),
annotations_simple_map_(),
annotation_objects_(),
uuid_(),
build_id_(),
name_(),
debug_file_name_(),
age_(0),
initialized_() {}
ModuleSnapshotMinidump::~ModuleSnapshotMinidump() {}
bool ModuleSnapshotMinidump::Initialize(
FileReaderInterface* file_reader,
RVA minidump_module_rva,
const MINIDUMP_LOCATION_DESCRIPTOR*
minidump_module_crashpad_info_location) {
INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
if (!file_reader->SeekSet(minidump_module_rva)) {
return false;
}
if (!file_reader->ReadExactly(&minidump_module_, sizeof(minidump_module_))) {
return false;
}
if (!InitializeModuleCrashpadInfo(file_reader,
minidump_module_crashpad_info_location)) {
return false;
}
ReadMinidumpUTF16String(file_reader, minidump_module_.ModuleNameRva, &name_);
if (minidump_module_.CvRecord.Rva != 0 &&
!InitializeModuleCodeView(file_reader)) {
return false;
}
INITIALIZATION_STATE_SET_VALID(initialized_);
return true;
}
bool ModuleSnapshotMinidump::InitializeModuleCodeView(
FileReaderInterface* file_reader) {
uint32_t signature;
DCHECK_NE(minidump_module_.CvRecord.Rva, 0u);
if (minidump_module_.CvRecord.DataSize < sizeof(signature)) {
LOG(ERROR) << "CodeView record in module too small to contain signature";
return false;
}
if (!file_reader->SeekSet(minidump_module_.CvRecord.Rva)) {
return false;
}
std::vector<uint8_t> cv_record;
cv_record.resize(minidump_module_.CvRecord.DataSize);
if (!file_reader->ReadExactly(cv_record.data(), cv_record.size())) {
return false;
}
signature = *reinterpret_cast<uint32_t*>(cv_record.data());
if (signature == CodeViewRecordPDB70::kSignature) {
if (cv_record.size() < offsetof(CodeViewRecordPDB70, pdb_name) + 1) {
LOG(ERROR) << "CodeView record in module marked as PDB70 but too small";
return false;
}
auto cv_record_pdb70 =
reinterpret_cast<CodeViewRecordPDB70*>(cv_record.data());
age_ = cv_record_pdb70->age;
uuid_ = cv_record_pdb70->uuid;
if (cv_record.back() != '\0') {
LOG(ERROR) << "CodeView record marked as PDB70 missing NUL-terminator in "
"pdb_name";
return false;
}
std::copy(cv_record.begin() + offsetof(CodeViewRecordPDB70, pdb_name),
cv_record.end() - 1,
std::back_inserter(debug_file_name_));
return true;
}
if (signature == CodeViewRecordBuildID::kSignature) {
std::copy(cv_record.begin() + offsetof(CodeViewRecordBuildID, build_id),
cv_record.end(),
std::back_inserter(build_id_));
return true;
}
LOG(ERROR) << "Bad CodeView signature in module";
return false;
}
std::string ModuleSnapshotMinidump::Name() const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return name_;
}
uint64_t ModuleSnapshotMinidump::Address() const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return minidump_module_.BaseOfImage;
}
uint64_t ModuleSnapshotMinidump::Size() const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return minidump_module_.SizeOfImage;
}
time_t ModuleSnapshotMinidump::Timestamp() const {
return minidump_module_.TimeDateStamp;
}
void ModuleSnapshotMinidump::FileVersion(uint16_t* version_0,
uint16_t* version_1,
uint16_t* version_2,
uint16_t* version_3) const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
uint32_t version_01 = minidump_module_.VersionInfo.dwFileVersionMS;
uint32_t version_23 = minidump_module_.VersionInfo.dwFileVersionLS;
*version_0 = static_cast<uint16_t>(version_01 >> 16);
*version_1 = static_cast<uint16_t>(version_01 & 0xFFFF);
*version_2 = static_cast<uint16_t>(version_23 >> 16);
*version_3 = static_cast<uint16_t>(version_23 & 0xFFFF);
}
void ModuleSnapshotMinidump::SourceVersion(uint16_t* version_0,
uint16_t* version_1,
uint16_t* version_2,
uint16_t* version_3) const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
uint32_t version_01 = minidump_module_.VersionInfo.dwProductVersionMS;
uint32_t version_23 = minidump_module_.VersionInfo.dwProductVersionLS;
*version_0 = static_cast<uint16_t>(version_01 >> 16);
*version_1 = static_cast<uint16_t>(version_01 & 0xFFFF);
*version_2 = static_cast<uint16_t>(version_23 >> 16);
*version_3 = static_cast<uint16_t>(version_23 & 0xFFFF);
}
ModuleSnapshot::ModuleType ModuleSnapshotMinidump::GetModuleType() const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
switch (minidump_module_.VersionInfo.dwFileType) {
case VFT_APP:
return kModuleTypeExecutable;
case VFT_DLL:
return kModuleTypeSharedLibrary;
}
return kModuleTypeUnknown;
}
void ModuleSnapshotMinidump::UUIDAndAge(crashpad::UUID* uuid,
uint32_t* age) const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
*uuid = uuid_;
*age = age_;
}
std::string ModuleSnapshotMinidump::DebugFileName() const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return debug_file_name_;
}
std::vector<uint8_t> ModuleSnapshotMinidump::BuildID() const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return build_id_;
}
std::vector<std::string> ModuleSnapshotMinidump::AnnotationsVector() const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return annotations_vector_;
}
std::map<std::string, std::string>
ModuleSnapshotMinidump::AnnotationsSimpleMap() const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return annotations_simple_map_;
}
std::vector<AnnotationSnapshot> ModuleSnapshotMinidump::AnnotationObjects()
const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
return annotation_objects_;
}
std::set<CheckedRange<uint64_t>> ModuleSnapshotMinidump::ExtraMemoryRanges()
const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
NOTREACHED_IN_MIGRATION(); // https://crashpad.chromium.org/bug/10
return std::set<CheckedRange<uint64_t>>();
}
std::vector<const UserMinidumpStream*>
ModuleSnapshotMinidump::CustomMinidumpStreams() const {
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
NOTREACHED_IN_MIGRATION(); // https://crashpad.chromium.org/bug/10
return std::vector<const UserMinidumpStream*>();
}
bool ModuleSnapshotMinidump::InitializeModuleCrashpadInfo(
FileReaderInterface* file_reader,
const MINIDUMP_LOCATION_DESCRIPTOR*
minidump_module_crashpad_info_location) {
if (!minidump_module_crashpad_info_location ||
minidump_module_crashpad_info_location->Rva == 0) {
return true;
}
MinidumpModuleCrashpadInfo minidump_module_crashpad_info;
if (minidump_module_crashpad_info_location->DataSize <
sizeof(minidump_module_crashpad_info)) {
LOG(ERROR) << "minidump_module_crashpad_info size mismatch";
return false;
}
if (!file_reader->SeekSet(minidump_module_crashpad_info_location->Rva)) {
return false;
}
if (!file_reader->ReadExactly(&minidump_module_crashpad_info,
sizeof(minidump_module_crashpad_info))) {
return false;
}
if (minidump_module_crashpad_info.version !=
MinidumpModuleCrashpadInfo::kVersion) {
LOG(ERROR) << "minidump_module_crashpad_info version mismatch";
return false;
}
if (!ReadMinidumpStringList(file_reader,
minidump_module_crashpad_info.list_annotations,
&annotations_vector_)) {
return false;
}
if (!ReadMinidumpSimpleStringDictionary(
file_reader,
minidump_module_crashpad_info.simple_annotations,
&annotations_simple_map_)) {
return false;
}
if (!ReadMinidumpAnnotationList(
file_reader,
minidump_module_crashpad_info.annotation_objects,
&annotation_objects_)) {
return false;
}
return true;
}
} // namespace internal
} // namespace crashpad