1    :  // Copyright 2013 Google Inc. All Rights Reserved.
   2    :  //
   3    :  // Licensed under the Apache License, Version 2.0 (the "License");
   4    :  // you may not use this file except in compliance with the License.
   5    :  // You may obtain a copy of the License at
   6    :  //
   7    :  //     http://www.apache.org/licenses/LICENSE-2.0
   8    :  //
   9    :  // Unless required by applicable law or agreed to in writing, software
  10    :  // distributed under the License is distributed on an "AS IS" BASIS,
  11    :  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12    :  // See the License for the specific language governing permissions and
  13    :  // limitations under the License.
  14    :  //
  15    :  // Common unittest fixtures and utilities for the ASAN runtime library.
  16    :  
  17    :  #include "syzygy/agent/asan/unittest_util.h"
  18    :  
  19    :  #include "base/environment.h"
  20    :  #include "base/string_number_conversions.h"
  21    :  #include "base/stringprintf.h"
  22    :  #include "base/utf_string_conversions.h"
  23    :  #include "syzygy/agent/asan/asan_runtime.h"
  24    :  #include "syzygy/trace/protocol/call_trace_defs.h"
  25    :  
  26    :  namespace testing {
  27    :  
  28    :  TestWithAsanLogger::TestWithAsanLogger()
  29  E :      : log_service_instance_(&log_service_), log_contents_read_(false) {
  30  E :  }
  31    :  
  32  E :  void TestWithAsanLogger::SetUp() {
  33    :    // Create and open the log file.
  34  E :    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
  35  E :    CHECK(file_util::CreateTemporaryFileInDir(temp_dir_.path(), &log_file_path_));
  36  E :    log_file_.reset(file_util::OpenFile(log_file_path_, "wb"));
  37    :  
  38    :    // Configure the environment (to pass the instance id to the agent DLL).
  39  E :    std::string instance_id;
  40  E :    scoped_ptr<base::Environment> env(base::Environment::Create());
  41  E :    env->GetVar(kSyzygyRpcInstanceIdEnvVar, &instance_id);
  42    :    instance_id.append(base::StringPrintf(";%ls,%u",
  43    :                                          agent::asan::AsanRuntime::SyzyAsanDll(),
  44  E :                                          ::GetCurrentProcessId()));
  45  E :    env->SetVar(kSyzygyRpcInstanceIdEnvVar, instance_id);
  46    :  
  47    :    // Configure and start the log service.
  48  E :    instance_id_ = base::UintToString16(::GetCurrentProcessId());
  49  E :    log_service_.set_instance_id(instance_id_);
  50  E :    log_service_.set_destination(log_file_.get());
  51  E :    log_service_.set_minidump_dir(temp_dir_.path());
  52  E :    log_service_.set_symbolize_stack_traces(false);
  53  E :    ASSERT_TRUE(log_service_.Start());
  54    :  
  55  E :    log_contents_read_ = false;
  56  E :  }
  57    :  
  58  E :  void TestWithAsanLogger::TearDown() {
  59  E :    log_service_.Stop();
  60  E :    log_service_.Join();
  61  E :    log_file_.reset(NULL);
  62  E :    LogContains("");
  63  E :  }
  64    :  
  65  E :  bool TestWithAsanLogger::LogContains(const base::StringPiece& message) {
  66  E :    if (!log_contents_read_ && log_file_.get() != NULL) {
  67  E :      CHECK(file_util::ReadFileToString(log_file_path_, &log_contents_));
  68  E :      log_contents_read_ = true;
  69    :    }
  70  E :    return log_contents_.find(message.as_string()) != std::string::npos;
  71  E :  }
  72    :  
  73  E :  void TestWithAsanLogger::DeleteTempFileAndDirectory() {
  74  E :    log_file_.reset();
  75  E :    if (temp_dir_.IsValid())
  76  E :      temp_dir_.Delete();
  77  E :  }
  78    :  
  79  E :  void TestWithAsanLogger::ResetLog() {
  80  E :    DCHECK(log_file_.get() != NULL);
  81  E :    CHECK(file_util::CreateTemporaryFileInDir(temp_dir_.path(), &log_file_path_));
  82  E :    file_util::ScopedFILE log_file(file_util::OpenFile(log_file_path_, "wb"));
  83  E :    log_service_.set_destination(log_file.get());
  84  E :    log_file_.reset(log_file.release());
  85  E :    log_contents_read_ = false;
  86  E :  }
  87    :  
  88    :  }  // namespace testing