diff options
Diffstat (limited to 'src/ClockTAI.h')
| -rw-r--r-- | src/ClockTAI.h | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/src/ClockTAI.h b/src/ClockTAI.h index 6ab9ab6..99827ba 100644 --- a/src/ClockTAI.h +++ b/src/ClockTAI.h @@ -44,10 +44,10 @@ // We can keep this code, maybe for future use #define SUPPORT_SETTING_CLOCK_TAI 0 -/* Loads, parses and represents TAI-UTC offset information from the USNO bulletin */ +/* Loads, parses and represents TAI-UTC offset information from the IETF bulletin */ class ClockTAI { public: - // Fetch the bulletin from the USNO website and return the current + // Fetch the bulletin from the IETF website and return the current // TAI-UTC offset. // Throws runtime_error on failure. int get_offset(void); @@ -59,7 +59,10 @@ class ClockTAI { #endif private: - int download_offset_task(void); + // Either retrieve the bulletin from the cache or if necessarly + // download it, and calculate the TAI-UTC offset. + // Returns the offset. + int get_valid_offset(void); // Download of new bulletin is done asynchronously std::future<int> m_offset_future; @@ -71,15 +74,22 @@ class ClockTAI { std::stringstream m_bulletin; std::chrono::system_clock::time_point m_bulletin_download_time; - // Load bulletin into m_bulletin + // Load bulletin into m_bulletin from the cache file + void load_bulletin_from_file(const char* cache_filename); + + // Update the cache file with the current m_bulletin + void update_cache(const char* cache_filename); + + // Verifies the expiration date in the m_bulletin. Returns + // true if the bulletin is valid. + bool bulletin_is_valid(void); + + // Load bulletin into m_bulletin from the URL void download_tai_utc_bulletin(const char* url); // read TAI offset from m_bulletin in IETF format int parse_ietf_bulletin(void); - // read TAI offset from m_bulletin in USNO format - int parse_usno_bulletin(void); - // callback that receives data from cURL size_t fill_bulletin(char *ptr, size_t size, size_t nmemb); |