crashpad/minidump/minidump_crashpad_info_writer_test.cc
Mark Mentovai 4539fd1553 minidump: Reorganize MinidumpModuleCrashpadInfo to improve linking
between classic and extension structures.

Previosly, each MinidumpModuleCrashpadInfo structure contained a
minidump_module_list_index field referencing a module in the
MINIDUMP_MODULE_LIST stream by index. This layout was discovered to
cause a problem for the new minidump reader in ModuleSnapshotMinidump.
Instead, the module list index for linkage should be contained in the
MinidumpModuleCrashpadInfoList alongside the LOCATION_DESCRIPTORs
pointing to each MinidumpModuleCrashpadInfo.

The organizational difference is small, but this enables a better design
for ModuleSnapshotMinidump. When initializing a ModuleSnapshotMinidump
with the new layout, it is possible for the caller to have access to the
location descriptor for the MinidumpModuleCrashpadInfo corresponding to
a MINIDUMP_MODULE_LIST. Previously, the caller would not have had this
data without interpreting each MinidumpModuleCrashpadInfo, which
ModuleSnapshotMinidump would have to do anyway.

MinidumpModuleCrashpadInfoListWriter was the only user of
MinidumpLocationDescriptorListWriter, which is obsoleted and removed in
this change. Its functionality is moving directly into
MinidumpModuleCrashpadInfoListWriter, but it is no longer generic enough
to maintain as a distinct class.

TEST=minidump_test \
     MinidumpModuleCrashpadInfoWriter.*,MinidumpCrashpadInfoWriter.*

R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/978463003
2015-03-04 10:53:34 -05:00

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// Copyright 2014 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_crashpad_info_writer.h"
#include <windows.h>
#include <dbghelp.h>
#include <map>
#include <string>
#include "gtest/gtest.h"
#include "minidump/minidump_extensions.h"
#include "minidump/minidump_file_writer.h"
#include "minidump/minidump_module_crashpad_info_writer.h"
#include "minidump/minidump_simple_string_dictionary_writer.h"
#include "minidump/test/minidump_file_writer_test_util.h"
#include "minidump/test/minidump_string_writer_test_util.h"
#include "minidump/test/minidump_writable_test_util.h"
#include "snapshot/test/test_module_snapshot.h"
#include "snapshot/test/test_process_snapshot.h"
#include "util/file/string_file.h"
namespace crashpad {
namespace test {
namespace {
void GetCrashpadInfoStream(
const std::string& file_contents,
const MinidumpCrashpadInfo** crashpad_info,
const MinidumpSimpleStringDictionary** simple_annotations,
const MinidumpModuleCrashpadInfoList** module_list) {
const MINIDUMP_DIRECTORY* directory;
const MINIDUMP_HEADER* header =
MinidumpHeaderAtStart(file_contents, &directory);
ASSERT_NO_FATAL_FAILURE(VerifyMinidumpHeader(header, 1, 0));
ASSERT_TRUE(directory);
ASSERT_EQ(kMinidumpStreamTypeCrashpadInfo, directory[0].StreamType);
*crashpad_info = MinidumpWritableAtLocationDescriptor<MinidumpCrashpadInfo>(
file_contents, directory[0].Location);
ASSERT_TRUE(*crashpad_info);
*simple_annotations =
MinidumpWritableAtLocationDescriptor<MinidumpSimpleStringDictionary>(
file_contents, (*crashpad_info)->simple_annotations);
*module_list =
MinidumpWritableAtLocationDescriptor<MinidumpModuleCrashpadInfoList>(
file_contents, (*crashpad_info)->module_list);
}
TEST(MinidumpCrashpadInfoWriter, Empty) {
MinidumpFileWriter minidump_file_writer;
auto crashpad_info_writer = make_scoped_ptr(new MinidumpCrashpadInfoWriter());
EXPECT_FALSE(crashpad_info_writer->IsUseful());
minidump_file_writer.AddStream(crashpad_info_writer.Pass());
StringFile string_file;
ASSERT_TRUE(minidump_file_writer.WriteEverything(&string_file));
const MinidumpCrashpadInfo* crashpad_info = nullptr;
const MinidumpSimpleStringDictionary* simple_annotations = nullptr;
const MinidumpModuleCrashpadInfoList* module_list = nullptr;
ASSERT_NO_FATAL_FAILURE(GetCrashpadInfoStream(
string_file.string(), &crashpad_info, &simple_annotations, &module_list));
EXPECT_EQ(MinidumpCrashpadInfo::kVersion, crashpad_info->version);
EXPECT_FALSE(simple_annotations);
EXPECT_FALSE(module_list);
}
TEST(MinidumpCrashpadInfoWriter, SimpleAnnotations) {
MinidumpFileWriter minidump_file_writer;
auto crashpad_info_writer = make_scoped_ptr(new MinidumpCrashpadInfoWriter());
const char kKey[] =
"a thing that provides a means of gaining access to or understanding "
"something";
const char kValue[] =
"the numerical amount denoted by an algebraic term; a magnitude, "
"quantity, or number";
auto simple_string_dictionary_writer =
make_scoped_ptr(new MinidumpSimpleStringDictionaryWriter());
auto simple_string_dictionary_entry_writer =
make_scoped_ptr(new MinidumpSimpleStringDictionaryEntryWriter());
simple_string_dictionary_entry_writer->SetKeyValue(kKey, kValue);
simple_string_dictionary_writer->AddEntry(
simple_string_dictionary_entry_writer.Pass());
crashpad_info_writer->SetSimpleAnnotations(
simple_string_dictionary_writer.Pass());
EXPECT_TRUE(crashpad_info_writer->IsUseful());
minidump_file_writer.AddStream(crashpad_info_writer.Pass());
StringFile string_file;
ASSERT_TRUE(minidump_file_writer.WriteEverything(&string_file));
const MinidumpCrashpadInfo* crashpad_info = nullptr;
const MinidumpSimpleStringDictionary* simple_annotations = nullptr;
const MinidumpModuleCrashpadInfoList* module_list = nullptr;
ASSERT_NO_FATAL_FAILURE(GetCrashpadInfoStream(
string_file.string(), &crashpad_info, &simple_annotations, &module_list));
EXPECT_EQ(MinidumpCrashpadInfo::kVersion, crashpad_info->version);
EXPECT_FALSE(module_list);
ASSERT_TRUE(simple_annotations);
ASSERT_EQ(1u, simple_annotations->count);
EXPECT_EQ(kKey,
MinidumpUTF8StringAtRVAAsString(
string_file.string(), simple_annotations->entries[0].key));
EXPECT_EQ(kValue,
MinidumpUTF8StringAtRVAAsString(
string_file.string(), simple_annotations->entries[0].value));
}
TEST(MinidumpCrashpadInfoWriter, CrashpadModuleList) {
const uint32_t kMinidumpModuleListIndex = 3;
MinidumpFileWriter minidump_file_writer;
auto crashpad_info_writer = make_scoped_ptr(new MinidumpCrashpadInfoWriter());
auto module_list_writer =
make_scoped_ptr(new MinidumpModuleCrashpadInfoListWriter());
auto module_writer = make_scoped_ptr(new MinidumpModuleCrashpadInfoWriter());
module_list_writer->AddModule(module_writer.Pass(), kMinidumpModuleListIndex);
crashpad_info_writer->SetModuleList(module_list_writer.Pass());
EXPECT_TRUE(crashpad_info_writer->IsUseful());
minidump_file_writer.AddStream(crashpad_info_writer.Pass());
StringFile string_file;
ASSERT_TRUE(minidump_file_writer.WriteEverything(&string_file));
const MinidumpCrashpadInfo* crashpad_info = nullptr;
const MinidumpSimpleStringDictionary* simple_annotations = nullptr;
const MinidumpModuleCrashpadInfoList* module_list = nullptr;
ASSERT_NO_FATAL_FAILURE(GetCrashpadInfoStream(
string_file.string(), &crashpad_info, &simple_annotations, &module_list));
EXPECT_EQ(MinidumpCrashpadInfo::kVersion, crashpad_info->version);
EXPECT_FALSE(simple_annotations);
ASSERT_TRUE(module_list);
ASSERT_EQ(1u, module_list->count);
EXPECT_EQ(kMinidumpModuleListIndex,
module_list->modules[0].minidump_module_list_index);
const MinidumpModuleCrashpadInfo* module =
MinidumpWritableAtLocationDescriptor<MinidumpModuleCrashpadInfo>(
string_file.string(), module_list->modules[0].location);
ASSERT_TRUE(module);
EXPECT_EQ(MinidumpModuleCrashpadInfo::kVersion, module->version);
EXPECT_EQ(0u, module->list_annotations.DataSize);
EXPECT_EQ(0u, module->list_annotations.Rva);
EXPECT_EQ(0u, module->simple_annotations.DataSize);
EXPECT_EQ(0u, module->simple_annotations.Rva);
}
TEST(MinidumpCrashpadInfoWriter, InitializeFromSnapshot) {
const char kKey[] = "version";
const char kValue[] = "40.0.2214.111";
const char kEntry[] = "This is a simple annotation in a list.";
// Test with a useless module, one that doesnt carry anything that would
// require MinidumpCrashpadInfo or any child object.
auto process_snapshot = make_scoped_ptr(new TestProcessSnapshot());
auto module_snapshot = make_scoped_ptr(new TestModuleSnapshot());
process_snapshot->AddModule(module_snapshot.Pass());
auto info_writer = make_scoped_ptr(new MinidumpCrashpadInfoWriter());
info_writer->InitializeFromSnapshot(process_snapshot.get());
EXPECT_FALSE(info_writer->IsUseful());
// Try again with a useful module.
process_snapshot.reset(new TestProcessSnapshot());
std::map<std::string, std::string> annotations_simple_map;
annotations_simple_map[kKey] = kValue;
process_snapshot->SetAnnotationsSimpleMap(annotations_simple_map);
module_snapshot.reset(new TestModuleSnapshot());
std::vector<std::string> annotations_list(1, std::string(kEntry));
module_snapshot->SetAnnotationsVector(annotations_list);
process_snapshot->AddModule(module_snapshot.Pass());
info_writer.reset(new MinidumpCrashpadInfoWriter());
info_writer->InitializeFromSnapshot(process_snapshot.get());
EXPECT_TRUE(info_writer->IsUseful());
MinidumpFileWriter minidump_file_writer;
minidump_file_writer.AddStream(info_writer.Pass());
StringFile string_file;
ASSERT_TRUE(minidump_file_writer.WriteEverything(&string_file));
const MinidumpCrashpadInfo* info = nullptr;
const MinidumpSimpleStringDictionary* simple_annotations;
const MinidumpModuleCrashpadInfoList* module_list;
ASSERT_NO_FATAL_FAILURE(GetCrashpadInfoStream(
string_file.string(), &info, &simple_annotations, &module_list));
EXPECT_EQ(MinidumpCrashpadInfo::kVersion, info->version);
ASSERT_TRUE(simple_annotations);
ASSERT_EQ(1u, simple_annotations->count);
EXPECT_EQ(kKey,
MinidumpUTF8StringAtRVAAsString(
string_file.string(), simple_annotations->entries[0].key));
EXPECT_EQ(kValue,
MinidumpUTF8StringAtRVAAsString(
string_file.string(), simple_annotations->entries[0].value));
ASSERT_TRUE(module_list);
ASSERT_EQ(1u, module_list->count);
EXPECT_EQ(0u, module_list->modules[0].minidump_module_list_index);
const MinidumpModuleCrashpadInfo* module =
MinidumpWritableAtLocationDescriptor<MinidumpModuleCrashpadInfo>(
string_file.string(), module_list->modules[0].location);
ASSERT_TRUE(module);
EXPECT_EQ(MinidumpModuleCrashpadInfo::kVersion, module->version);
const MinidumpRVAList* list_annotations =
MinidumpWritableAtLocationDescriptor<MinidumpRVAList>(
string_file.string(), module->list_annotations);
ASSERT_TRUE(list_annotations);
ASSERT_EQ(1u, list_annotations->count);
EXPECT_EQ(kEntry,
MinidumpUTF8StringAtRVAAsString(string_file.string(),
list_annotations->children[0]));
const MinidumpSimpleStringDictionary* module_simple_annotations =
MinidumpWritableAtLocationDescriptor<MinidumpSimpleStringDictionary>(
string_file.string(), module->simple_annotations);
EXPECT_FALSE(module_simple_annotations);
}
} // namespace
} // namespace test
} // namespace crashpad