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// Copyright 2016 The Crashpad Authors. All rights reserved.
//
// 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 "minidump/minidump_unloaded_module_writer.h"
#include <limits>
#include <utility>
#include "minidump/minidump_writer_util.h"
#include "util/file/file_writer.h"
#include "util/numeric/in_range_cast.h"
#include "util/numeric/safe_assignment.h"
namespace crashpad {
MinidumpUnloadedModuleWriter::MinidumpUnloadedModuleWriter()
: MinidumpWritable(), unloaded_module_(), name_() {}
MinidumpUnloadedModuleWriter::~MinidumpUnloadedModuleWriter() {
}
void MinidumpUnloadedModuleWriter::InitializeFromSnapshot(
const UnloadedModuleSnapshot& unloaded_module_snapshot) {
DCHECK_EQ(state(), kStateMutable);
DCHECK(!name_);
SetName(unloaded_module_snapshot.Name());
SetImageBaseAddress(unloaded_module_snapshot.Address());
SetImageSize(InRangeCast<uint32_t>(unloaded_module_snapshot.Size(),
std::numeric_limits<uint32_t>::max()));
SetTimestamp(unloaded_module_snapshot.Timestamp());
SetChecksum(unloaded_module_snapshot.Checksum());
}
const MINIDUMP_UNLOADED_MODULE*
MinidumpUnloadedModuleWriter::MinidumpUnloadedModule() const {
DCHECK_EQ(state(), kStateWritable);
return &unloaded_module_;
}
void MinidumpUnloadedModuleWriter::SetName(const std::string& name) {
DCHECK_EQ(state(), kStateMutable);
if (!name_) {
name_.reset(new internal::MinidumpUTF16StringWriter());
}
name_->SetUTF8(name);
}
void MinidumpUnloadedModuleWriter::SetTimestamp(time_t timestamp) {
DCHECK_EQ(state(), kStateMutable);
internal::MinidumpWriterUtil::AssignTimeT(&unloaded_module_.TimeDateStamp,
timestamp);
}
bool MinidumpUnloadedModuleWriter::Freeze() {
DCHECK_EQ(state(), kStateMutable);
CHECK(name_);
if (!MinidumpWritable::Freeze()) {
return false;
}
name_->RegisterRVA(&unloaded_module_.ModuleNameRva);
return true;
}
size_t MinidumpUnloadedModuleWriter::SizeOfObject() {
DCHECK_GE(state(), kStateFrozen);
// This object doesn’t directly write anything itself. Its
// MINIDUMP_UNLOADED_MODULE is written by its parent as part of a
// MINIDUMP_UNLOADED_MODULE_LIST, and its children are responsible for writing
// themselves.
return 0;
}
std::vector<internal::MinidumpWritable*>
MinidumpUnloadedModuleWriter::Children() {
DCHECK_GE(state(), kStateFrozen);
DCHECK(name_);
std::vector<MinidumpWritable*> children(1, name_.get());
return children;
}
bool MinidumpUnloadedModuleWriter::WriteObject(
FileWriterInterface* file_writer) {
DCHECK_EQ(state(), kStateWritable);
// This object doesn’t directly write anything itself. Its
// MINIDUMP_UNLOADED_MODULE is written by its parent as part of a
// MINIDUMP_UNLOADED_MODULE_LIST, and its children are responsible for writing
// themselves.
return true;
}
MinidumpUnloadedModuleListWriter::MinidumpUnloadedModuleListWriter()
: MinidumpStreamWriter(),
unloaded_modules_(),
unloaded_module_list_base_() {}
MinidumpUnloadedModuleListWriter::~MinidumpUnloadedModuleListWriter() {
}
void MinidumpUnloadedModuleListWriter::InitializeFromSnapshot(
const std::vector<UnloadedModuleSnapshot>& unloaded_module_snapshots) {
DCHECK_EQ(state(), kStateMutable);
DCHECK(unloaded_modules_.empty());
for (auto unloaded_module_snapshot : unloaded_module_snapshots) {
auto unloaded_module = std::make_unique<MinidumpUnloadedModuleWriter>();
unloaded_module->InitializeFromSnapshot(unloaded_module_snapshot);
AddUnloadedModule(std::move(unloaded_module));
}
}
void MinidumpUnloadedModuleListWriter::AddUnloadedModule(
std::unique_ptr<MinidumpUnloadedModuleWriter> unloaded_module) {
DCHECK_EQ(state(), kStateMutable);
unloaded_modules_.push_back(std::move(unloaded_module));
}
bool MinidumpUnloadedModuleListWriter::Freeze() {
DCHECK_EQ(state(), kStateMutable);
if (!MinidumpStreamWriter::Freeze()) {
return false;
}
unloaded_module_list_base_.SizeOfHeader =
sizeof(MINIDUMP_UNLOADED_MODULE_LIST);
unloaded_module_list_base_.SizeOfEntry = sizeof(MINIDUMP_UNLOADED_MODULE);
size_t unloaded_module_count = unloaded_modules_.size();
if (!AssignIfInRange(&unloaded_module_list_base_.NumberOfEntries,
unloaded_module_count)) {
LOG(ERROR) << "unloaded_module_count " << unloaded_module_count
<< " out of range";
return false;
}
return true;
}
size_t MinidumpUnloadedModuleListWriter::SizeOfObject() {
DCHECK_GE(state(), kStateFrozen);
return sizeof(unloaded_module_list_base_) +
unloaded_modules_.size() * sizeof(MINIDUMP_UNLOADED_MODULE);
}
std::vector<internal::MinidumpWritable*>
MinidumpUnloadedModuleListWriter::Children() {
DCHECK_GE(state(), kStateFrozen);
std::vector<MinidumpWritable*> children;
for (const auto& unloaded_module : unloaded_modules_) {
children.push_back(unloaded_module.get());
}
return children;
}
bool MinidumpUnloadedModuleListWriter::WriteObject(
FileWriterInterface* file_writer) {
DCHECK_EQ(state(), kStateWritable);
WritableIoVec iov;
iov.iov_base = &unloaded_module_list_base_;
iov.iov_len = sizeof(unloaded_module_list_base_);
std::vector<WritableIoVec> iovecs(1, iov);
for (const auto& unloaded_module : unloaded_modules_) {
iov.iov_base = unloaded_module->MinidumpUnloadedModule();
iov.iov_len = sizeof(MINIDUMP_UNLOADED_MODULE);
iovecs.push_back(iov);
}
return file_writer->WriteIoVec(&iovecs);
}
MinidumpStreamType MinidumpUnloadedModuleListWriter::StreamType() const {
return kMinidumpStreamTypeUnloadedModuleList;
}
} // namespace crashpad