blob: 54d7db1e7744625498eec43e3795851d0bb31fad [file] [log] [blame]
// Copyright 2017 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/minidump_annotation_reader.h"
#include <stdint.h>
#include "base/logging.h"
#include "minidump/minidump_extensions.h"
#include "snapshot/minidump/minidump_string_reader.h"
namespace crashpad {
namespace internal {
namespace {
bool ReadMinidumpByteArray(FileReaderInterface* file_reader,
RVA rva,
std::vector<uint8_t>* data) {
if (rva == 0) {
data->clear();
return true;
}
if (!file_reader->SeekSet(rva)) {
return false;
}
uint32_t length;
if (!file_reader->ReadExactly(&length, sizeof(length))) {
return false;
}
std::vector<uint8_t> local_data(length);
if (!file_reader->ReadExactly(local_data.data(), length)) {
return false;
}
data->swap(local_data);
return true;
}
} // namespace
bool ReadMinidumpAnnotationList(FileReaderInterface* file_reader,
const MINIDUMP_LOCATION_DESCRIPTOR& location,
std::vector<AnnotationSnapshot>* list) {
if (location.Rva == 0) {
list->clear();
return true;
}
if (location.DataSize < sizeof(MinidumpAnnotationList)) {
LOG(ERROR) << "annotation list size mismatch";
return false;
}
if (!file_reader->SeekSet(location.Rva)) {
return false;
}
uint32_t count;
if (!file_reader->ReadExactly(&count, sizeof(count))) {
return false;
}
if (location.DataSize !=
sizeof(MinidumpAnnotationList) + count * sizeof(MinidumpAnnotation)) {
LOG(ERROR) << "annotation object size mismatch";
return false;
}
std::vector<MinidumpAnnotation> minidump_annotations(count);
if (!file_reader->ReadExactly(minidump_annotations.data(),
count * sizeof(MinidumpAnnotation))) {
return false;
}
std::vector<AnnotationSnapshot> annotations;
annotations.reserve(count);
for (size_t i = 0; i < count; ++i) {
const MinidumpAnnotation* minidump_annotation = &minidump_annotations[i];
AnnotationSnapshot annotation;
// The client-exposed size of this field is 16-bit, but the minidump field
// is 32-bit for padding. Take just the lower part.
annotation.type = static_cast<uint16_t>(minidump_annotation->type);
if (!ReadMinidumpUTF8String(
file_reader, minidump_annotation->name, &annotation.name)) {
return false;
}
if (!ReadMinidumpByteArray(
file_reader, minidump_annotation->value, &annotation.value)) {
return false;
}
annotations.push_back(std::move(annotation));
}
list->swap(annotations);
return true;
}
} // namespace internal
} // namespace crashpad