Implement command GetDateTime
This commit implements the GetDateTime command which is
defined in PLDM Bios Control and Configuration Specification.
Change-Id: Iced21bbad7be07d357b6885b1b1e03b07a3da165
Signed-off-by: Sampa Misra <sampmisr@in.ibm.com>
diff --git a/libpldmresponder/bios.cpp b/libpldmresponder/bios.cpp
new file mode 100644
index 0000000..dfd07b8
--- /dev/null
+++ b/libpldmresponder/bios.cpp
@@ -0,0 +1,99 @@
+#include "bios.hpp"
+
+#include "libpldmresponder/utils.hpp"
+#include "xyz/openbmc_project/Common/error.hpp"
+
+#include <array>
+#include <chrono>
+#include <ctime>
+#include <iostream>
+#include <phosphor-logging/elog-errors.hpp>
+#include <stdexcept>
+#include <string>
+#include <variant>
+#include <vector>
+
+namespace pldm
+{
+
+using namespace phosphor::logging;
+
+using EpochTimeUS = uint64_t;
+
+constexpr auto dbusProperties = "org.freedesktop.DBus.Properties";
+
+namespace responder
+{
+
+namespace utils
+{
+
+void epochToBCDTime(uint64_t timeSec, uint8_t& seconds, uint8_t& minutes,
+ uint8_t& hours, uint8_t& day, uint8_t& month,
+ uint16_t& year)
+{
+ auto t = time_t(timeSec);
+ auto time = localtime(&t);
+
+ seconds = decimalToBcd(time->tm_sec);
+ minutes = decimalToBcd(time->tm_min);
+ hours = decimalToBcd(time->tm_hour);
+ day = decimalToBcd(time->tm_mday);
+ month =
+ decimalToBcd(time->tm_mon + 1); // The number of months in the range
+ // 0 to 11.PLDM expects range 1 to 12
+ year = decimalToBcd(time->tm_year + 1900); // The number of years since 1900
+}
+
+} // namespace utils
+
+void getDateTime(const pldm_msg_payload* request, pldm_msg* response)
+{
+ uint8_t seconds = 0;
+ uint8_t minutes = 0;
+ uint8_t hours = 0;
+ uint8_t day = 0;
+ uint8_t month = 0;
+ uint16_t year = 0;
+
+ constexpr auto timeInterface = "xyz.openbmc_project.Time.EpochTime";
+ constexpr auto bmcTimePath = "/xyz/openbmc_project/time/bmc";
+ std::variant<EpochTimeUS> value;
+
+ auto bus = sdbusplus::bus::new_default();
+ try
+ {
+ auto service = getService(bus, bmcTimePath, timeInterface);
+
+ auto method = bus.new_method_call(service.c_str(), bmcTimePath,
+ dbusProperties, "Get");
+ method.append(timeInterface, "Elapsed");
+
+ auto reply = bus.call(method);
+ reply.read(value);
+ }
+
+ catch (std::exception& e)
+ {
+ log<level::ERR>("Error getting time", entry("PATH=%s", bmcTimePath),
+ entry("TIME INTERACE=%s", timeInterface));
+
+ encode_get_date_time_resp(0, PLDM_ERROR, seconds, minutes, hours, day,
+ month, year, response);
+ return;
+ }
+
+ uint64_t timeUsec = std::get<EpochTimeUS>(value);
+
+ uint64_t timeSec = std::chrono::duration_cast<std::chrono::seconds>(
+ std::chrono::microseconds(timeUsec))
+ .count();
+
+ utils::epochToBCDTime(timeSec, seconds, minutes, hours, day, month, year);
+
+ encode_get_date_time_resp(0, PLDM_SUCCESS, seconds, minutes, hours, day,
+ month, year, response);
+}
+
+} // namespace responder
+} // namespace pldm