Re: [edk2-devel] [PATCH EDK2 v1 1/1] CryptoPkg/BaseCryptLib:time overflow

["Yao, Jiewen" <jiewen.yao@intel.com>]

Thank you!

Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>

> -----Original Message-----
> From: xiewenyi (A) <xiewenyi2@huawei.com>
> Sent: Thursday, December 1, 2022 8:34 PM
> To: Yao, Jiewen <jiewen.yao@intel.com>; devel@edk2.groups.io; Wang, Jian
> J <jian.j.wang@intel.com>; Lu, Xiaoyu1 <xiaoyu1.lu@intel.com>; Jiang,
> Guomin <guomin.jiang@intel.com>
> Cc: songdongkuang@huawei.com; yizihong@huawei.com
> Subject: Re: [edk2-devel] [PATCH EDK2 v1 1/1]
> CryptoPkg/BaseCryptLib:time overflow
> 
> 
> 
> On 2022/12/1 16:34, Yao, Jiewen wrote:
> > Thank you!
> >
> > Would you please share what test you have run for this patch, such as
> UEFI secure boot? HTTPS boot?
> >
> Hi, Jiewen
> 
> We found this problem when importing certification and verifying the
> expiration date(the verifying code is customed), so we only using a X64
> board to do the test like below:
> 1. Entering setup page
> 2. Setting system time to 2038.9.27 19:23
> 3. Importing a X509 certification, which is valid from 2022.9.27 1:59 to
> 2023.9.27 1:59
> 
> before merging the patch
> the certification can be imported successfully.
> 
> after merging the patch
> importing failed.
> >
> >
> >> -----Original Message-----
> >> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> >> wenyi,xie via groups.io
> >> Sent: Friday, November 25, 2022 5:12 PM
> >> To: devel@edk2.groups.io; Yao, Jiewen <jiewen.yao@intel.com>; Wang,
> Jian
> >> J <jian.j.wang@intel.com>; Lu, Xiaoyu1 <xiaoyu1.lu@intel.com>; Jiang,
> >> Guomin <guomin.jiang@intel.com>
> >> Cc: songdongkuang@huawei.com; xiewenyi2@huawei.com;
> >> yizihong@huawei.com
> >> Subject: [edk2-devel] [PATCH EDK2 v1 1/1] CryptoPkg/BaseCryptLib:time
> >> overflow
> >>
> >> From: Zihong Yi <yizihong@huawei.com>
> >>
> >> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4167
> >>
> >> In CrtLibSupport.h, time_t is defined as INT32, and its maximum value
> >> is 2147483647. That is, the corresponding maximum timestamp is
> >> 2038-01-19 11:14:07. Therefore, overflow occurs when the test time
> >> exceeds 2038-01-19 11:14:07. So change the type of time_t to INT64
> and
> >> also change the type of variables in function gmtime which calculated
> >> with time_t.
> >>
> >> Cc: Jiewen Yao <jiewen.yao@intel.com>
> >> Cc: Jian J Wang <jian.j.wang@intel.com>
> >> Cc: Xiaoyu Lu <xiaoyu1.lu@intel.com>
> >> Cc: Guomin Jiang <guomin.jiang@intel.com>
> >> Signed-off-by: Zihong Yi <yizihong@huawei.com>
> >> ---
> >>  CryptoPkg/Library/Include/CrtLibSupport.h             |  2 +-
> >>  CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c | 51
> >> ++++++++++++++------
> >>  2 files changed, 38 insertions(+), 15 deletions(-)
> >>
> >> diff --git a/CryptoPkg/Library/Include/CrtLibSupport.h
> >> b/CryptoPkg/Library/Include/CrtLibSupport.h
> >> index 5072c343da57..94b0e6b6014f 100644
> >> --- a/CryptoPkg/Library/Include/CrtLibSupport.h
> >> +++ b/CryptoPkg/Library/Include/CrtLibSupport.h
> >> @@ -109,7 +109,7 @@ typedef UINTN   off_t;
> >>  typedef UINTN   u_int;
> >>  typedef INTN    ptrdiff_t;
> >>  typedef INTN    ssize_t;
> >> -typedef INT32   time_t;
> >> +typedef INT64   time_t;
> >>  typedef UINT8   __uint8_t;
> >>  typedef UINT8   sa_family_t;
> >>  typedef UINT8   u_char;
> >> diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
> >> b/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
> >> index bf8a5325817f..3ed64375d0ff 100644
> >> --- a/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
> >> +++ b/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
> >> @@ -15,7 +15,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
> >>  // -- 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)
> >> @@ -60,6 +59,26 @@ UINTN  CumulativeDays[2][14] = {
> >>    }
> >>  };
> >>
> >> +/* Check the year is leap or not. */
> >> +// BOOLEAN IsLeap(
> >> +//  INTN timer
> >> +//  )
> >> +BOOLEAN
> >> +IsLeap (
> >> +  time_t  timer
> >> +  )
> >> +{
> >> +  INT64  Remainder1;
> >> +  INT64  Remainder2;
> >> +  INT64  Remainder3;
> >> +
> >> +  DivS64x64Remainder (timer, 4, &Remainder1);
> >> +  DivS64x64Remainder (timer, 100, &Remainder2);
> >> +  DivS64x64Remainder (timer, 400, &Remainder3);
> >> +
> >> +  return (Remainder1 == 0 && (Remainder2 != 0 || Remainder3 == 0));
> >> +}
> >> +
> >>  /* Get the system time as seconds elapsed since midnight, January 1,
> 1970.
> >> */
> >>  // INTN time(
> >>  //  INTN *timer
> >> @@ -117,12 +136,13 @@ gmtime (
> >>    )
> >>  {
> >>    struct tm  *GmTime;
> >> -  UINT16     DayNo;
> >> -  UINT32     DayRemainder;
> >> +  UINT64     DayNo;
> >> +  UINT64     DayRemainder;
> >>    time_t     Year;
> >>    time_t     YearNo;
> >> -  UINT16     TotalDays;
> >> -  UINT16     MonthNo;
> >> +  UINT32     TotalDays;
> >> +  UINT32     MonthNo;
> >> +  INT64      Remainder;
> >>
> >>    if (timer == NULL) {
> >>      return NULL;
> >> @@ -135,18 +155,21 @@ gmtime (
> >>
> >>    ZeroMem ((VOID *)GmTime, (UINTN)sizeof (struct tm));
> >>
> >> -  DayNo        = (UINT16)(*timer / SECSPERDAY);
> >> -  DayRemainder = (UINT32)(*timer % SECSPERDAY);
> >> +  DayNo        = (UINT64)DivS64x64Remainder (*timer, SECSPERDAY,
> >> &Remainder);
> >> +  DayRemainder = (UINT64)Remainder;
> >>
> >> -  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);
> >> +  DivS64x64Remainder (DayRemainder, SECSPERMIN, &Remainder);
> >> +  GmTime->tm_sec  = (int)Remainder;
> >> +  DivS64x64Remainder (DayRemainder, SECSPERHOUR, &Remainder);
> >> +  GmTime->tm_min  = (int)DivS64x64Remainder (Remainder,
> SECSPERMIN,
> >> NULL);
> >> +  GmTime->tm_hour = (int)DivS64x64Remainder (DayRemainder,
> >> SECSPERHOUR, NULL);
> >> +  DivS64x64Remainder ((DayNo + 4), 7, &Remainder);
> >> +  GmTime->tm_wday = (int)Remainder;
> >>
> >>    for (Year = 1970, YearNo = 0; DayNo > 0; Year++) {
> >> -    TotalDays = (UINT16)(IsLeap (Year) ? 366 : 365);
> >> +    TotalDays = (UINT32)(IsLeap (Year) ? 366 : 365);
> >>      if (DayNo >= TotalDays) {
> >> -      DayNo = (UINT16)(DayNo - TotalDays);
> >> +      DayNo = (UINT64)(DayNo - TotalDays);
> >>        YearNo++;
> >>      } else {
> >>        break;
> >> @@ -158,7 +181,7 @@ gmtime (
> >>
> >>    for (MonthNo = 12; MonthNo > 1; MonthNo--) {
> >>      if (DayNo >= CumulativeDays[IsLeap (Year)][MonthNo]) {
> >> -      DayNo = (UINT16)(DayNo - (UINT16)(CumulativeDays[IsLeap
> >> (Year)][MonthNo]));
> >> +      DayNo = (UINT64)(DayNo - (UINT32)(CumulativeDays[IsLeap
> >> (Year)][MonthNo]));
> >>        break;
> >>      }
> >>    }
> >> --
> >> 2.20.1.windows.1
> >>
> >>
> >>
> >> 
> >>
> >
> >
> > .
> >