crash-reporter: Capture and send recent update_engine logs when it crashes

crash_collector.h

 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef _CRASH_REPORTER_CRASH_COLLECTOR_H_
 #define _CRASH_REPORTER_CRASH_COLLECTOR_H_
 
 #include <sys/stat.h>
 
 #include <map>
@@ skipping 21 matching lines @@
                   IsFeedbackAllowedFunction is_metrics_allowed,
                   SystemLogging *logger);
 
  protected:
   friend class CrashCollectorTest;
   FRIEND_TEST(CrashCollectorTest, CheckHasCapacityCorrectBasename);
   FRIEND_TEST(CrashCollectorTest, CheckHasCapacityStrangeNames);
   FRIEND_TEST(CrashCollectorTest, CheckHasCapacityUsual);
   FRIEND_TEST(CrashCollectorTest, GetCrashDirectoryInfo);
   FRIEND_TEST(CrashCollectorTest, GetCrashPath);
+  FRIEND_TEST(CrashCollectorTest, GetLogContents);
   FRIEND_TEST(CrashCollectorTest, ForkExecAndPipe);
   FRIEND_TEST(CrashCollectorTest, FormatDumpBasename);
   FRIEND_TEST(CrashCollectorTest, Initialize);
+  FRIEND_TEST(CrashCollectorTest, IsCommentLine);
   FRIEND_TEST(CrashCollectorTest, MetaData);
   FRIEND_TEST(CrashCollectorTest, ReadKeyValueFile);
   FRIEND_TEST(CrashCollectorTest, Sanitize);
   FRIEND_TEST(CrashCollectorTest, WriteNewFile);
 
   // Set maximum enqueued crashes in a crash directory.
   static const int kMaxCrashDirectorySize;
 
   // Writes |data| of |size| to |filename|, which must be a new file.
   // If the file already exists or writing fails, return a negative value.
@@ skipping 40 matching lines @@
   // Create a file path to a file in |crash_directory| with the given
   // |basename| and |extension|.
   FilePath GetCrashPath(const FilePath &crash_directory,
                         const std::string &basename,
                         const std::string &extension);
 
   // Check given crash directory still has remaining capacity for another
   // crash.
   bool CheckHasCapacity(const FilePath &crash_directory);
 
+  // Checks if the line starts with '#' after optional whitespace.
+  static bool IsCommentLine(const std::string &line);
+
   // Read the given file of form [<key><separator><value>\n...] and return
   // a map of its contents.
   bool ReadKeyValueFile(const FilePath &file,
                         char separator,
                         std::map<std::string, std::string> *dictionary);
 
+  // Write a log applicable to |exec_name| to |output_file| based on the
+  // log configuration file at |config_path|.
+  bool GetLogContents(const FilePath &config_path,
+                      const std::string &exec_name,
+                      const FilePath &output_file);
+
   // Add non-standard meta data to the crash metadata file.  Call
   // before calling WriteCrashMetaData.  Key must not contain "=" or
   // "\n" characters.  Value must not contain "\n" characters.
   void AddCrashMetaData(const std::string &key, const std::string &value);
 
   // Write a file of metadata about crash.
   void WriteCrashMetaData(const FilePath &meta_path,
                           const std::string &exec_name,
                           const std::string &payload_path);
 
   CountCrashFunction count_crash_function_;
   IsFeedbackAllowedFunction is_feedback_allowed_function_;
   SystemLogging *logger_;
   std::string extra_metadata_;
   const char *forced_crash_directory_;
   const char *lsb_release_;
 };
 
 #endif  // _CRASH_REPORTER_CRASH_COLLECTOR_H_