crashpad/snapshot/minidump/minidump_simple_string_dictionary_reader.cc
Mark Mentovai 40b931bd8e Add ProcessSnapshotMinidump, the beginning of the minidump variant of
the Snapshot family.

For the time being, only ProcessSnapshotMinidump::AnnotationsSimpleMap()
is implemented. In order to complete the initial uploader for Crashpad,
ModuleSnapshotMinidump::AnnotationsSimpleMap() is also needed, to be
accessed by ProcessSnapshotMinidump::Modules().

TEST=snapshot_test ProcessSnapshotMinidump.*
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/932153003
2015-02-26 14:43:10 -05:00

90 lines
2.6 KiB
C++

// Copyright 2015 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 "snapshot/minidump/minidump_simple_string_dictionary_reader.h"
#include <vector>
#include <utility>
#include "base/logging.h"
#include "minidump/minidump_extensions.h"
#include "snapshot/minidump/minidump_string_reader.h"
namespace crashpad {
namespace internal {
bool ReadMinidumpSimpleStringDictionary(
FileReaderInterface* file_reader,
const MINIDUMP_LOCATION_DESCRIPTOR& location,
std::map<std::string, std::string>* dictionary) {
if (location.Rva == 0) {
dictionary->clear();
return true;
}
if (location.DataSize < sizeof(MinidumpSimpleStringDictionary)) {
LOG(ERROR) << "simple_string_dictionary size mismatch";
return false;
}
if (!file_reader->SeekSet(location.Rva)) {
return false;
}
uint32_t entry_count;
if (!file_reader->ReadExactly(&entry_count, sizeof(entry_count))) {
return false;
}
if (location.DataSize !=
entry_count * sizeof(MinidumpSimpleStringDictionaryEntry)) {
LOG(ERROR) << "simple_string_dictionary size mismatch";
return false;
}
std::vector<MinidumpSimpleStringDictionaryEntry> entries(entry_count);
if (!file_reader->ReadExactly(&entries[0],
entry_count * sizeof(entries[0]))) {
return false;
}
std::map<std::string, std::string> local_dictionary;
for (const MinidumpSimpleStringDictionaryEntry& entry : entries) {
std::string key;
if (!ReadMinidumpUTF8String(file_reader, entry.key, &key)) {
// Not a hard error, keep trying.
continue;
}
std::string value;
if (!ReadMinidumpUTF8String(file_reader, entry.value, &value)) {
// Not a hard error, keep trying.
continue;
}
if (local_dictionary.find(key) != local_dictionary.end()) {
LOG(WARNING) << "duplicate key " << key << ", discarding value " << value;
continue;
}
local_dictionary.insert(std::make_pair(key, value));
}
dictionary->swap(local_dictionary);
return true;
}
} // namespace internal
} // namespace crashpad