win: make CrashpadInfo retrievable

snapshot/mac/crashpad_info_client_options_test.cc

-// 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/mac/crashpad_info_client_options.h"
-
-#include <dlfcn.h>
-
-#include "base/files/file_path.h"
-#include "client/crashpad_info.h"
-#include "gtest/gtest.h"
-#include "snapshot/mac/process_snapshot_mac.h"
-#include "test/paths.h"
-
-namespace crashpad {
-namespace test {
-namespace {
-
-TEST(CrashpadInfoClientOptions, TriStateFromCrashpadInfo) {
-  EXPECT_EQ(TriState::kUnset,
-            CrashpadInfoClientOptions::TriStateFromCrashpadInfo(0));
-  EXPECT_EQ(TriState::kEnabled,
-            CrashpadInfoClientOptions::TriStateFromCrashpadInfo(1));
-  EXPECT_EQ(TriState::kDisabled,
-            CrashpadInfoClientOptions::TriStateFromCrashpadInfo(2));
-
-  // These will produce log messages but should result in kUnset being returned.
-  EXPECT_EQ(TriState::kUnset,
-            CrashpadInfoClientOptions::TriStateFromCrashpadInfo(3));
-  EXPECT_EQ(TriState::kUnset,
-            CrashpadInfoClientOptions::TriStateFromCrashpadInfo(4));
-  EXPECT_EQ(TriState::kUnset,
-            CrashpadInfoClientOptions::TriStateFromCrashpadInfo(0xff));
-}
-
-class ScopedUnsetCrashpadInfoOptions {
- public:
-  explicit ScopedUnsetCrashpadInfoOptions(CrashpadInfo* crashpad_info)
-      : crashpad_info_(crashpad_info) {
-  }
-
-  ~ScopedUnsetCrashpadInfoOptions() {
-    crashpad_info_->set_crashpad_handler_behavior(TriState::kUnset);
-    crashpad_info_->set_system_crash_reporter_forwarding(TriState::kUnset);
-  }
-
- private:
-  CrashpadInfo* crashpad_info_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedUnsetCrashpadInfoOptions);
-};
-
-TEST(CrashpadInfoClientOptions, OneModule) {
-  // Make sure that the initial state has all values unset.
-  ProcessSnapshotMac process_snapshot;
-  ASSERT_TRUE(process_snapshot.Initialize(mach_task_self()));
-
-  CrashpadInfoClientOptions options;
-  process_snapshot.GetCrashpadOptions(&options);
-
-  EXPECT_EQ(TriState::kUnset, options.crashpad_handler_behavior);
-  EXPECT_EQ(TriState::kUnset, options.system_crash_reporter_forwarding);
-
-  CrashpadInfo* crashpad_info = CrashpadInfo::GetCrashpadInfo();
-  ASSERT_TRUE(crashpad_info);
-
-  {
-    ScopedUnsetCrashpadInfoOptions unset(crashpad_info);
-
-    crashpad_info->set_crashpad_handler_behavior(TriState::kEnabled);
-
-    process_snapshot.GetCrashpadOptions(&options);
-    EXPECT_EQ(TriState::kEnabled, options.crashpad_handler_behavior);
-    EXPECT_EQ(TriState::kUnset, options.system_crash_reporter_forwarding);
-  }
-
-  {
-    ScopedUnsetCrashpadInfoOptions unset(crashpad_info);
-
-    crashpad_info->set_system_crash_reporter_forwarding(TriState::kDisabled);
-
-    process_snapshot.GetCrashpadOptions(&options);
-    EXPECT_EQ(TriState::kUnset, options.crashpad_handler_behavior);
-    EXPECT_EQ(TriState::kDisabled, options.system_crash_reporter_forwarding);
-  }
-}
-
-class ScopedDlHandle {
- public:
-  explicit ScopedDlHandle(void* dl_handle)
-      : dl_handle_(dl_handle) {
-  }
-
-  ~ScopedDlHandle() {
-    if (dl_handle_) {
-      if (dlclose(dl_handle_) != 0) {
-        LOG(ERROR) << "dlclose: " << dlerror();
-      }
-    }
-  }
-
-  bool valid() const { return dl_handle_ != nullptr; }
-
-  template <typename T>
-  T LookUpSymbol(const char* symbol_name) {
-    return reinterpret_cast<T>(dlsym(dl_handle_, symbol_name));
-  }
-
- private:
-  void* dl_handle_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedDlHandle);
-};
-
-TEST(CrashpadInfoClientOptions, TwoModules) {
-  // Open the module, which has its own CrashpadInfo structure.
-  base::FilePath module_path =
-      Paths::Executable().DirName().Append("crashpad_snapshot_test_module.so");
-  ScopedDlHandle dl_handle(
-      dlopen(module_path.value().c_str(), RTLD_LAZY | RTLD_LOCAL));
-  ASSERT_TRUE(dl_handle.valid()) << "dlopen " << module_path.value() << ": "
-                                 << dlerror();
-
-  // Get the function pointer from the module. This wraps GetCrashpadInfo(), but
-  // because it runs in the module, it returns the remote module’s CrashpadInfo
-  // structure.
-  CrashpadInfo* (*TestModule_GetCrashpadInfo)() =
-      dl_handle.LookUpSymbol<CrashpadInfo* (*)()>("TestModule_GetCrashpadInfo");
-  ASSERT_TRUE(TestModule_GetCrashpadInfo);
-
-  // Make sure that the initial state has all values unset.
-  ProcessSnapshotMac process_snapshot;
-  ASSERT_TRUE(process_snapshot.Initialize(mach_task_self()));
-
-  CrashpadInfoClientOptions options;
-  process_snapshot.GetCrashpadOptions(&options);
-
-  EXPECT_EQ(TriState::kUnset, options.crashpad_handler_behavior);
-  EXPECT_EQ(TriState::kUnset, options.system_crash_reporter_forwarding);
-
-  // Get both CrashpadInfo structures.
-  CrashpadInfo* local_crashpad_info = CrashpadInfo::GetCrashpadInfo();
-  ASSERT_TRUE(local_crashpad_info);
-
-  CrashpadInfo* remote_crashpad_info = TestModule_GetCrashpadInfo();
-  ASSERT_TRUE(remote_crashpad_info);
-
-  {
-    ScopedUnsetCrashpadInfoOptions unset_local(local_crashpad_info);
-    ScopedUnsetCrashpadInfoOptions unset_remote(remote_crashpad_info);
-
-    // When only one module sets a value, it applies to the entire process.
-    remote_crashpad_info->set_crashpad_handler_behavior(TriState::kEnabled);
-
-    process_snapshot.GetCrashpadOptions(&options);
-    EXPECT_EQ(TriState::kEnabled, options.crashpad_handler_behavior);
-    EXPECT_EQ(TriState::kUnset, options.system_crash_reporter_forwarding);
-
-    // When more than one module sets a value, the first one in the module list
-    // applies to the process. The local module should appear before the remote
-    // module, because the local module loaded the remote module.
-    local_crashpad_info->set_crashpad_handler_behavior(TriState::kDisabled);
-
-    process_snapshot.GetCrashpadOptions(&options);
-    EXPECT_EQ(TriState::kDisabled, options.crashpad_handler_behavior);
-    EXPECT_EQ(TriState::kUnset, options.system_crash_reporter_forwarding);
-  }
-
-  {
-    ScopedUnsetCrashpadInfoOptions unset_local(local_crashpad_info);
-    ScopedUnsetCrashpadInfoOptions unset_remote(remote_crashpad_info);
-
-    // When only one module sets a value, it applies to the entire process.
-    remote_crashpad_info->set_system_crash_reporter_forwarding(
-        TriState::kDisabled);
-
-    process_snapshot.GetCrashpadOptions(&options);
-    EXPECT_EQ(TriState::kUnset, options.crashpad_handler_behavior);
-    EXPECT_EQ(TriState::kDisabled, options.system_crash_reporter_forwarding);
-
-    // When more than one module sets a value, the first one in the module list
-    // applies to the process. The local module should appear before the remote
-    // module, because the local module loaded the remote module.
-    local_crashpad_info->set_system_crash_reporter_forwarding(
-        TriState::kEnabled);
-
-    process_snapshot.GetCrashpadOptions(&options);
-    EXPECT_EQ(TriState::kUnset, options.crashpad_handler_behavior);
-    EXPECT_EQ(TriState::kEnabled, options.system_crash_reporter_forwarding);
-  }
-}
-
-}  // namespace
-}  // namespace test
-}  // namespace crashpad