mirror of https://github.com/acidanthera/audk.git
Fix SmmCryptLib issue when calling time() in RealTimeClock.c
Signed-off by: Ye Ting <ting.ye@intel.com> Reviewed-by: Yao Jiewen <jiewen.yao@intel.com> Reviewed-by: Long Qin <qin.long@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13417 6f19259b-4bc3-4df7-8a09-765794883524
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tye1
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@ -1,6 +1,15 @@
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## @file
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# Cryptographic Library Instance for SMM driver.
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#
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# This library instance uses ConstantTimeClock.c thus does not provide
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# functionality for following APIs which need system time support:
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# 1) RsaGenerateKey
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# 2) RsaCheckKey
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# 3) RsaPkcs1Sign
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# 4) Pkcs7Sign
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# 5) DhGenerateParameter
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# 6) DhGenerateKey
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#
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# Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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@ -37,7 +46,7 @@
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Pem/CryptPem.c
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SysCall/CrtWrapper.c
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SysCall/RealTimeClock.c
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SysCall/ConstantTimeClock.c
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SysCall/BaseMemAllocation.c
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[Sources.Ia32]
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@ -0,0 +1,41 @@
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/** @file
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C Run-Time Libraries (CRT) Time Management Routines Wrapper Implementation
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for OpenSSL-based Cryptographic Library.
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This C file implements constant time value for time() and NULL for gmtime()
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thus should not be used in library instances which require functionality
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of following APIs which need system time support:
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1) RsaGenerateKey
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2) RsaCheckKey
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3) RsaPkcs1Sign
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4) Pkcs7Sign
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5) DhGenerateParameter
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6) DhGenerateKey
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Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <OpenSslSupport.h>
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//
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// -- Time Management Routines --
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//
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time_t time (time_t *timer)
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{
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*timer = 0;
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return *timer;
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}
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struct tm * gmtime (const time_t *timer)
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{
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return NULL;
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}
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@ -1,286 +0,0 @@
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/** @file
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C Run-Time Libraries (CRT) Time Management Routines Wrapper Implementation
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for OpenSSL-based Cryptographic Library (used in SMM).
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Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Library/BaseLib.h>
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#include <Library/IoLib.h>
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#include <OpenSslSupport.h>
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#define PCAT_RTC_ADDRESS_REGISTER 0x70
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#define PCAT_RTC_DATA_REGISTER 0x71
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#define RTC_ADDRESS_SECONDS 0 // R/W Range 0..59
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#define RTC_ADDRESS_SECONDS_ALARM 1 // R/W Range 0..59
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#define RTC_ADDRESS_MINUTES 2 // R/W Range 0..59
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#define RTC_ADDRESS_MINUTES_ALARM 3 // R/W Range 0..59
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#define RTC_ADDRESS_HOURS 4 // R/W Range 1..12 or 0..23 Bit 7 is AM/PM
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#define RTC_ADDRESS_HOURS_ALARM 5 // R/W Range 1..12 or 0..23 Bit 7 is AM/PM
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#define RTC_ADDRESS_DAY_OF_THE_WEEK 6 // R/W Range 1..7
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#define RTC_ADDRESS_DAY_OF_THE_MONTH 7 // R/W Range 1..31
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#define RTC_ADDRESS_MONTH 8 // R/W Range 1..12
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#define RTC_ADDRESS_YEAR 9 // R/W Range 0..99
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#define RTC_ADDRESS_REGISTER_A 10 // R/W[0..6] R0[7]
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#define RTC_ADDRESS_REGISTER_B 11 // R/W
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#define RTC_ADDRESS_REGISTER_C 12 // RO
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#define RTC_ADDRESS_REGISTER_D 13 // RO
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#define RTC_ADDRESS_CENTURY 50 // R/W Range 19..20 Bit 8 is R/W
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//
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// Register A
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//
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typedef struct {
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UINT8 RS : 4; // Rate Selection Bits
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UINT8 DV : 3; // Divisor
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UINT8 UIP : 1; // Update in progress
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} RTC_REGISTER_A_BITS;
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typedef union {
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RTC_REGISTER_A_BITS Bits;
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UINT8 Data;
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} RTC_REGISTER_A;
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//
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// Register B
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//
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typedef struct {
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UINT8 DSE : 1; // 0 - Daylight saving disabled 1 - Daylight savings enabled
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UINT8 MIL : 1; // 0 - 12 hour mode 1 - 24 hour mode
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UINT8 DM : 1; // 0 - BCD Format 1 - Binary Format
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UINT8 SQWE : 1; // 0 - Disable SQWE output 1 - Enable SQWE output
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UINT8 UIE : 1; // 0 - Update INT disabled 1 - Update INT enabled
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UINT8 AIE : 1; // 0 - Alarm INT disabled 1 - Alarm INT Enabled
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UINT8 PIE : 1; // 0 - Periodic INT disabled 1 - Periodic INT Enabled
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UINT8 SET : 1; // 0 - Normal operation. 1 - Updates inhibited
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} RTC_REGISTER_B_BITS;
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typedef union {
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RTC_REGISTER_B_BITS Bits;
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UINT8 Data;
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} RTC_REGISTER_B;
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//
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// -- Time Management Routines --
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//
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#define IsLeap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
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#define SECSPERMIN (60)
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#define SECSPERHOUR (60 * 60)
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#define SECSPERDAY (24 * SECSPERHOUR)
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//
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// The arrays give the cumulative number of days up to the first of the
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// month number used as the index (1 -> 12) for regular and leap years.
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// The value at index 13 is for the whole year.
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//
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UINTN CumulativeDays[2][14] = {
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{
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0,
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0,
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31,
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31 + 28,
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31 + 28 + 31,
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31 + 28 + 31 + 30,
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31 + 28 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
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},
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{
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0,
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0,
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31,
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31 + 29,
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31 + 29 + 31,
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31 + 29 + 31 + 30,
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31 + 29 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
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}
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};
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/**
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Read RTC content through its registers.
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@param Address Address offset of RTC. It is recommended to use macros such as
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RTC_ADDRESS_SECONDS.
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@return The data of UINT8 type read from RTC.
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**/
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UINT8
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RtcRead (
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IN UINT8 Address
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)
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{
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IoWrite8 (PCAT_RTC_ADDRESS_REGISTER, (UINT8) (Address | (UINT8) (IoRead8 (PCAT_RTC_ADDRESS_REGISTER) & BIT7)));
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return IoRead8 (PCAT_RTC_DATA_REGISTER);
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}
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/* Get the system time as seconds elapsed since midnight, January 1, 1970. */
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//INTN time(
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// INTN *timer
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// )
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time_t time (time_t *timer)
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{
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UINT16 Year;
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UINT8 Month;
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UINT8 Day;
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UINT8 Hour;
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UINT8 Minute;
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UINT8 Second;
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UINT8 Century;
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RTC_REGISTER_A RegisterA;
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RTC_REGISTER_B RegisterB;
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BOOLEAN IsPM;
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UINT16 YearIndex;
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RegisterA.Data = RtcRead (RTC_ADDRESS_REGISTER_A);
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while (RegisterA.Bits.UIP == 1) {
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CpuPause();
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RegisterA.Data = RtcRead (RTC_ADDRESS_REGISTER_A);
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}
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Second = RtcRead (RTC_ADDRESS_SECONDS);
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Minute = RtcRead (RTC_ADDRESS_MINUTES);
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Hour = RtcRead (RTC_ADDRESS_HOURS);
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Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);
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Month = RtcRead (RTC_ADDRESS_MONTH);
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Year = RtcRead (RTC_ADDRESS_YEAR);
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Century = RtcRead (RTC_ADDRESS_CENTURY);
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RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);
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if ((Hour & BIT7) != 0) {
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IsPM = TRUE;
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} else {
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IsPM = FALSE;
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}
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Hour = (UINT8) (Hour & 0x7f);
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if (RegisterB.Bits.DM == 0) {
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Year = BcdToDecimal8 ((UINT8) Year);
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Month = BcdToDecimal8 (Month);
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Day = BcdToDecimal8 (Day);
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Hour = BcdToDecimal8 (Hour);
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Minute = BcdToDecimal8 (Minute);
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Second = BcdToDecimal8 (Second);
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}
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Century = BcdToDecimal8 (Century);
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Year = (UINT16) (Century * 100 + Year);
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//
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// If time is in 12 hour format, convert it to 24 hour format
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//
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if (RegisterB.Bits.MIL == 0) {
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if (IsPM && Hour < 12) {
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Hour = (UINT8) (Hour + 12);
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}
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if (!IsPM && Hour == 12) {
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Hour = 0;
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}
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}
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//
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// Years Handling
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// UTime should now be set to 00:00:00 on Jan 1 of the current year.
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//
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for (YearIndex = 1970, *timer = 0; YearIndex != Year; YearIndex++) {
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*timer = *timer + (time_t)(CumulativeDays[IsLeap(YearIndex)][13] * SECSPERDAY);
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}
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//
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// Add in number of seconds for current Month, Day, Hour, Minute, Seconds, and TimeZone adjustment
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//
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ASSERT (Month <= 12);
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*timer = *timer +
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(time_t)(CumulativeDays[IsLeap(Year)][Month] * SECSPERDAY) +
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(time_t)((Day - 1) * SECSPERDAY) +
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(time_t)(Hour * SECSPERHOUR) +
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(time_t)(Minute * 60) +
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(time_t)Second;
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return *timer;
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}
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//
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// Convert a time value from type time_t to struct tm.
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//
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struct tm * gmtime (const time_t *timer)
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{
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struct tm *GmTime;
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UINT16 DayNo;
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UINT16 DayRemainder;
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time_t Year;
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time_t YearNo;
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UINT16 TotalDays;
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UINT16 MonthNo;
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if (timer == NULL) {
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return NULL;
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}
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GmTime = malloc (sizeof (struct tm));
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if (GmTime == NULL) {
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return NULL;
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}
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ZeroMem ((VOID *) GmTime, (UINTN) sizeof (struct tm));
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DayNo = (UINT16) (*timer / SECSPERDAY);
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DayRemainder = (UINT16) (*timer % SECSPERDAY);
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GmTime->tm_sec = (int) (DayRemainder % SECSPERMIN);
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GmTime->tm_min = (int) ((DayRemainder % SECSPERHOUR) / SECSPERMIN);
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GmTime->tm_hour = (int) (DayRemainder / SECSPERHOUR);
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GmTime->tm_wday = (int) ((DayNo + 4) % 7);
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for (Year = 1970, YearNo = 0; DayNo > 0; Year++) {
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TotalDays = (UINT16) (IsLeap (Year) ? 366 : 365);
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if (DayNo >= TotalDays) {
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DayNo = (UINT16) (DayNo - TotalDays);
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YearNo++;
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} else {
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break;
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}
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}
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GmTime->tm_year = (int) (YearNo + (1970 - 1900));
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GmTime->tm_yday = (int) DayNo;
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for (MonthNo = 12; MonthNo > 1; MonthNo--) {
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if (DayNo > CumulativeDays[IsLeap(Year)][MonthNo]) {
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DayNo = (UINT16) (DayNo - (UINT16) (CumulativeDays[IsLeap(Year)][MonthNo]));
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break;
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}
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}
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GmTime->tm_mon = (int) MonthNo;
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GmTime->tm_mday = (int) DayNo;
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GmTime->tm_isdst = 0;
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GmTime->tm_gmtoff = 0;
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GmTime->tm_zone = NULL;
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return GmTime;
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}
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