diff options
Diffstat (limited to 'CryptoPkg/Library/BaseCryptLibMbedTls/SysCall/TimerWrapper.c')
| -rw-r--r-- | CryptoPkg/Library/BaseCryptLibMbedTls/SysCall/TimerWrapper.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/CryptoPkg/Library/BaseCryptLibMbedTls/SysCall/TimerWrapper.c b/CryptoPkg/Library/BaseCryptLibMbedTls/SysCall/TimerWrapper.c new file mode 100644 index 0000000000..b7cd4d3181 --- /dev/null +++ b/CryptoPkg/Library/BaseCryptLibMbedTls/SysCall/TimerWrapper.c @@ -0,0 +1,198 @@ +/** @file
+ C Run-Time Libraries (CRT) Time Management Routines Wrapper Implementation
+ for MbedTLS-based Cryptographic Library (used in DXE & RUNTIME).
+
+Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+typedef int time_t;
+
+//
+// Structures Definitions
+//
+struct tm {
+ int tm_sec; /* seconds after the minute [0-60] */
+ int tm_min; /* minutes after the hour [0-59] */
+ int tm_hour; /* hours since midnight [0-23] */
+ int tm_mday; /* day of the month [1-31] */
+ int tm_mon; /* months since January [0-11] */
+ int tm_year; /* years since 1900 */
+ int tm_wday; /* days since Sunday [0-6] */
+ int tm_yday; /* days since January 1 [0-365] */
+ int tm_isdst; /* Daylight Savings Time flag */
+ long tm_gmtoff; /* offset from CUT in seconds */
+ char *tm_zone; /* timezone abbreviation */
+};
+
+//
+// -- Time Management Routines --
+//
+
+#define IsLeap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
+#define SECSPERMIN (60)
+#define SECSPERHOUR (60 * 60)
+#define SECSPERDAY (24 * SECSPERHOUR)
+
+//
+// The arrays give the cumulative number of days up to the first of the
+// month number used as the index (1 -> 12) for regular and leap years.
+// The value at index 13 is for the whole year.
+//
+UINTN CumulativeDays[2][14] = {
+ {
+ 0,
+ 0,
+ 31,
+ 31 + 28,
+ 31 + 28 + 31,
+ 31 + 28 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
+ },
+ {
+ 0,
+ 0,
+ 31,
+ 31 + 29,
+ 31 + 29 + 31,
+ 31 + 29 + 31 + 30,
+ 31 + 29 + 31 + 30 + 31,
+ 31 + 29 + 31 + 30 + 31 + 30,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
+ }
+};
+
+/** Get the system time as seconds elapsed since midnight, January 1, 1970. **/
+time_t
+time (
+ time_t *timer
+ )
+{
+ EFI_STATUS Status;
+ EFI_TIME Time;
+ time_t CalTime;
+ UINTN Year;
+
+ //
+ // Get the current time and date information
+ //
+ Status = gRT->GetTime (&Time, NULL);
+ if (EFI_ERROR (Status) || (Time.Year < 1970)) {
+ return 0;
+ }
+
+ //
+ // Years Handling
+ // UTime should now be set to 00:00:00 on Jan 1 of the current year.
+ //
+ for (Year = 1970, CalTime = 0; Year != Time.Year; Year++) {
+ CalTime = CalTime + (time_t)(CumulativeDays[IsLeap (Year)][13] * SECSPERDAY);
+ }
+
+ //
+ // Add in number of seconds for current Month, Day, Hour, Minute, Seconds, and TimeZone adjustment
+ //
+ CalTime = CalTime +
+ (time_t)((Time.TimeZone != EFI_UNSPECIFIED_TIMEZONE) ? (Time.TimeZone * 60) : 0) +
+ (time_t)(CumulativeDays[IsLeap (Time.Year)][Time.Month] * SECSPERDAY) +
+ (time_t)(((Time.Day > 0) ? Time.Day - 1 : 0) * SECSPERDAY) +
+ (time_t)(Time.Hour * SECSPERHOUR) +
+ (time_t)(Time.Minute * 60) +
+ (time_t)Time.Second;
+
+ if (timer != NULL) {
+ *timer = CalTime;
+ }
+
+ return CalTime;
+}
+
+/** Convert a time value from type time_t to struct tm. **/
+struct tm *
+gmtime (
+ const time_t *timer
+ )
+{
+ struct tm *GmTime;
+ UINT16 DayNo;
+ UINT16 DayRemainder;
+ time_t Year;
+ time_t YearNo;
+ UINT16 TotalDays;
+ UINT16 MonthNo;
+
+ if (timer == NULL) {
+ return NULL;
+ }
+
+ GmTime = AllocateZeroPool (sizeof (struct tm));
+ if (GmTime == NULL) {
+ return NULL;
+ }
+
+ ZeroMem ((VOID *)GmTime, (UINTN)sizeof (struct tm));
+
+ DayNo = (UINT16)(*timer / SECSPERDAY);
+ DayRemainder = (UINT16)(*timer % SECSPERDAY);
+
+ GmTime->tm_sec = (int)(DayRemainder % SECSPERMIN);
+ GmTime->tm_min = (int)((DayRemainder % SECSPERHOUR) / SECSPERMIN);
+ GmTime->tm_hour = (int)(DayRemainder / SECSPERHOUR);
+ GmTime->tm_wday = (int)((DayNo + 4) % 7);
+
+ for (Year = 1970, YearNo = 0; DayNo > 0; Year++) {
+ TotalDays = (UINT16)(IsLeap (Year) ? 366 : 365);
+ if (DayNo >= TotalDays) {
+ DayNo = (UINT16)(DayNo - TotalDays);
+ YearNo++;
+ } else {
+ break;
+ }
+ }
+
+ GmTime->tm_year = (int)(YearNo + (1970 - 1900));
+ GmTime->tm_yday = (int)DayNo;
+
+ for (MonthNo = 12; MonthNo > 1; MonthNo--) {
+ if (DayNo >= CumulativeDays[IsLeap (Year)][MonthNo]) {
+ DayNo = (UINT16)(DayNo - (UINT16)(CumulativeDays[IsLeap (Year)][MonthNo]));
+ break;
+ }
+ }
+
+ GmTime->tm_mon = (int)MonthNo - 1;
+ GmTime->tm_mday = (int)DayNo + 1;
+
+ GmTime->tm_isdst = 0;
+ GmTime->tm_gmtoff = 0;
+ GmTime->tm_zone = NULL;
+
+ return GmTime;
+}
+
+/**_time64 function. **/
+time_t
+_time64 (
+ time_t *t
+ )
+{
+ return time (t);
+}
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