120 lines
3.2 KiB
C++
120 lines
3.2 KiB
C++
// Copyright 2017 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "snapshot/minidump/minidump_annotation_reader.h"
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#include <stdint.h>
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#include "base/logging.h"
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#include "minidump/minidump_extensions.h"
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#include "snapshot/minidump/minidump_string_reader.h"
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namespace crashpad {
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namespace internal {
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namespace {
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bool ReadMinidumpByteArray(FileReaderInterface* file_reader,
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RVA rva,
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std::vector<uint8_t>* data) {
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if (rva == 0) {
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data->clear();
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return true;
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}
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if (!file_reader->SeekSet(rva)) {
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return false;
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}
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uint32_t length;
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if (!file_reader->ReadExactly(&length, sizeof(length))) {
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return false;
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}
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std::vector<uint8_t> local_data(length);
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if (!file_reader->ReadExactly(local_data.data(), length)) {
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return false;
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}
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data->swap(local_data);
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return true;
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}
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} // namespace
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bool ReadMinidumpAnnotationList(FileReaderInterface* file_reader,
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const MINIDUMP_LOCATION_DESCRIPTOR& location,
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std::vector<AnnotationSnapshot>* list) {
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if (location.Rva == 0) {
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list->clear();
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return true;
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}
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if (location.DataSize < sizeof(MinidumpAnnotationList)) {
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LOG(ERROR) << "annotation list size mismatch";
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return false;
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}
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if (!file_reader->SeekSet(location.Rva)) {
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return false;
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}
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uint32_t count;
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if (!file_reader->ReadExactly(&count, sizeof(count))) {
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return false;
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}
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if (location.DataSize !=
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sizeof(MinidumpAnnotationList) + count * sizeof(MinidumpAnnotation)) {
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LOG(ERROR) << "annotation object size mismatch";
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return false;
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}
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std::vector<MinidumpAnnotation> minidump_annotations(count);
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if (!file_reader->ReadExactly(minidump_annotations.data(),
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count * sizeof(MinidumpAnnotation))) {
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return false;
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}
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std::vector<AnnotationSnapshot> annotations;
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annotations.reserve(count);
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for (size_t i = 0; i < count; ++i) {
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const MinidumpAnnotation* minidump_annotation = &minidump_annotations[i];
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AnnotationSnapshot annotation;
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// The client-exposed size of this field is 16-bit, but the minidump field
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// is 32-bit for padding. Take just the lower part.
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annotation.type = static_cast<uint16_t>(minidump_annotation->type);
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if (!ReadMinidumpUTF8String(
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file_reader, minidump_annotation->name, &annotation.name)) {
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return false;
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}
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if (!ReadMinidumpByteArray(
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file_reader, minidump_annotation->value, &annotation.value)) {
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return false;
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}
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annotations.push_back(std::move(annotation));
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}
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list->swap(annotations);
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return true;
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}
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} // namespace internal
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} // namespace crashpad
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