Hi Vitaly, What about this ASSERT() in UnicodeStrnToAsciiStrS(). It is an ASSERT() on the data contents. // // Convert string // while ((*Source != 0) && (SourceLen > 0)) { // // If any Unicode characters in Source contain non-zero value in the upper // 8 bits, then ASSERT(). // ASSERT (*Source < 0x100); *(Destination++) = (CHAR8) *(Source++); SourceLen--; (*DestinationLength)++; } *Destination = 0; Mike From: devel@edk2.groups.io On Behalf Of Vitaly Cheptsov Sent: Thursday, May 14, 2020 11:59 AM To: Kinney, Michael D Cc: devel@edk2.groups.io; Andrew Fish ; Ard Biesheuvel ; Bret Barkelew ; Brian J . Johnson ; Chiu, Chasel ; Justen, Jordan L ; Laszlo Ersek ; Leif Lindholm ; Gao, Liming ; Marvin Häuser ; Zimmer, Vincent ; Gao, Zhichao Subject: Re: [edk2-devel] [PATCH V6 1/1] MdePkg: Fix SafeString performing assertions on runtime checks Mike, The code you posted may inflict undefined behaviour is not valid C for several reasons. The compiler is free to do whatever it desires. Please refer to ISO/IEC 9899 for more details. If applications cast raw pointers to typed pointers without checking their alignment, well, god bless them :) My opinion is both the compiler and the hardware are welcome to do the worst once your third line is discovered. On a number of CPUs such addresses cannot be even represented in the first place. Yet, once again it is out of the scope of the current problem. Best wishes, Vitaly 14 мая 2020 г., в 20:58, Kinney, Michael D > написал(а): Vitaly, Why do you think there is no way to craft an odd address without memory corruption. UINT8 ByteArray[100]; CHAR16 *String String = (CHAR16 *)(&Array[3]); The reason I raised the question of these other ASSERT()s is that I thought the use case was using these safe string APIs from a UEFI App, and the UEFI App always wants to evaluate the return status to know if the operation was completed or not. In build that removes all ASSERT()s, an odd address will generate an exception on some CPU archs. Wouldn’t it be better for the UEFI App that is already designed to handle error return status to get an error code instead of an exception? Mike -----Original Message----- From: devel@edk2.groups.io > On Behalf Of Vitaly Cheptsov Sent: Thursday, May 14, 2020 10:39 AM To: Kinney, Michael D > Cc: devel@edk2.groups.io; Andrew Fish >; Ard Biesheuvel >; Bret Barkelew >; Brian J . Johnson >; Chiu, Chasel >; Justen, Jordan L >; Laszlo Ersek >; Leif Lindholm >; Gao, Liming >; Marvin Häuser >; Zimmer, Vincent >; Gao, Zhichao > Subject: Re: [edk2-devel] [PATCH V6 1/1] MdePkg: Fix SafeString performing assertions on runtime checks Mike, Firstly, NULL check and odd-address checks are essentially different things: — NULL address is basically «no object», «optional argument» (e.g. failed allocation). — Odd address is memory corruption, as there is no way to craft such address anyhow else. For this reason the implementation is allowed to treat them differently. Secondly, as I said in my cover letter there is no behaviour change here for RELEASE builds. Behaviour changes unrelated to the bugfix will have to go to a separate patch. I agree that we may want to reconsider the interface in the future, but that’s for a separate bugzilla and patch. Not discussing it currently is important to avoid diverting from the primary problem. Could create a bugzilla not to forget about it soon after the stable tag. Best wishes, Vitaly 14 мая 2020 г., в 19:38, Kinney, Michael D > написал(а): Why preserve the ASSERT()s for an a Unicode strings that are not aligned in a 16-bit boundary? This is essentially the same as an invalid pointer value just like NULL. If NULL pointer returns an error code, shouldn't and invalid pointer value? Thanks, Mike -----Original Message----- From: devel@edk2.groups.io > On Behalf Of Vitaly Cheptsov Sent: Thursday, May 14, 2020 2:26 AM To: devel@edk2.groups.io Cc: Andrew Fish >; Ard Biesheuvel >; Bret Barkelew >; Brian J . Johnson >; Chiu, Chasel >; Justen, Jordan L >; Laszlo Ersek >; Leif Lindholm >; Gao, Liming >; Marvin Häuser >; Kinney, Michael D >; Zimmer, Vincent >; Gao, Zhichao > Subject: [edk2-devel] [PATCH V6 1/1] MdePkg: Fix SafeString performing assertions on runtime checks REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2054 Runtime checks returned via status return code should not work as assertions to permit parsing not trusted data with SafeString interfaces. CC: Andrew Fish > CC: Ard Biesheuvel > CC: Bret Barkelew > CC: Brian J. Johnson > CC: Chasel Chiu > CC: Jordan Justen > CC: Laszlo Ersek > CC: Leif Lindholm > CC: Liming Gao > CC: Marvin Häuser > CC: Mike Kinney > CC: Vincent Zimmer > CC: Zhichao Gao > Signed-off-by: Vitaly Cheptsov > --- MdePkg/Include/Library/BaseLib.h | 120 ++-------- -- -------- MdePkg/Library/BaseLib/SafeString.c | 80 ---------- -- - 2 files changed, 7 insertions(+), 193 deletions(-) diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h index ecadff8b23..62dc3151bc 100644 --- a/MdePkg/Include/Library/BaseLib.h +++ b/MdePkg/Include/Library/BaseLib.h @@ -189,7 +189,6 @@ StrnSizeS ( If Destination is not aligned on a 16-bit boundary, then ASSERT(). If Source is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -225,7 +224,6 @@ StrCpyS ( If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT(). If Length > 0 and Source is not aligned on a 16- bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -263,7 +261,6 @@ StrnCpyS ( If Destination is not aligned on a 16-bit boundary, then ASSERT(). If Source is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -303,7 +300,6 @@ StrCatS ( If Destination is not aligned on a 16-bit boundary, then ASSERT(). If Source is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -350,12 +346,7 @@ StrnCatS ( be ignored. Then, the function stops at the first character that is a not a valid decimal character or a Null-terminator, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). - If PcdMaximumUnicodeStringLength is not zero, and String contains more than - PcdMaximumUnicodeStringLength Unicode characters, not including the - Null-terminator, then ASSERT(). If String has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. @@ -406,12 +397,7 @@ StrDecimalToUintnS ( be ignored. Then, the function stops at the first character that is a not a valid decimal character or a Null-terminator, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). - If PcdMaximumUnicodeStringLength is not zero, and String contains more than - PcdMaximumUnicodeStringLength Unicode characters, not including the - Null-terminator, then ASSERT(). If String has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. @@ -467,12 +453,7 @@ StrDecimalToUint64S ( the first character that is a not a valid hexadecimal character or NULL, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). - If PcdMaximumUnicodeStringLength is not zero, and String contains more than - PcdMaximumUnicodeStringLength Unicode characters, not including the - Null-terminator, then ASSERT(). If String has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. @@ -528,12 +509,7 @@ StrHexToUintnS ( the first character that is a not a valid hexadecimal character or NULL, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). - If PcdMaximumUnicodeStringLength is not zero, and String contains more than - PcdMaximumUnicodeStringLength Unicode characters, not including the - Null-terminator, then ASSERT(). If String has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. @@ -622,8 +598,6 @@ AsciiStrnSizeS ( This function is similar as strcpy_s defined in C11. - If an error would be returned, then the function will also ASSERT(). - If an error is returned, then the Destination is unmodified. @param Destination A pointer to a Null-terminated Ascii string. @@ -656,8 +630,6 @@ AsciiStrCpyS ( This function is similar as strncpy_s defined in C11. - If an error would be returned, then the function will also ASSERT(). - If an error is returned, then the Destination is unmodified. @param Destination A pointer to a Null-terminated Ascii string. @@ -692,8 +664,6 @@ AsciiStrnCpyS ( This function is similar as strcat_s defined in C11. - If an error would be returned, then the function will also ASSERT(). - If an error is returned, then the Destination is unmodified. @param Destination A pointer to a Null-terminated Ascii string. @@ -730,8 +700,6 @@ AsciiStrCatS ( This function is similar as strncat_s defined in C11. - If an error would be returned, then the function will also ASSERT(). - If an error is returned, then the Destination is unmodified. @param Destination A pointer to a Null-terminated Ascii string. @@ -777,12 +745,6 @@ AsciiStrnCatS ( be ignored. Then, the function stops at the first character that is a not a valid decimal character or a Null-terminator, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). - If PcdMaximumAsciiStringLength is not zero, and String contains more than - PcdMaximumAsciiStringLength Ascii characters, not including the - Null-terminator, then ASSERT(). - If String has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINTN, then @@ -832,12 +794,6 @@ AsciiStrDecimalToUintnS ( be ignored. Then, the function stops at the first character that is a not a valid decimal character or a Null-terminator, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). - If PcdMaximumAsciiStringLength is not zero, and String contains more than - PcdMaximumAsciiStringLength Ascii characters, not including the - Null-terminator, then ASSERT(). - If String has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINT64, then @@ -891,12 +847,6 @@ AsciiStrDecimalToUint64S ( character that is a not a valid hexadecimal character or Null-terminator, whichever on comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). - If PcdMaximumAsciiStringLength is not zero, and String contains more than - PcdMaximumAsciiStringLength Ascii characters, not including the - Null-terminator, then ASSERT(). - If String has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINTN, then @@ -950,12 +900,6 @@ AsciiStrHexToUintnS ( character that is a not a valid hexadecimal character or Null-terminator, whichever on comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). - If PcdMaximumAsciiStringLength is not zero, and String contains more than - PcdMaximumAsciiStringLength Ascii characters, not including the - Null-terminator, then ASSERT(). - If String has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINT64, then @@ -1506,16 +1450,8 @@ StrHexToUint64 ( "::" can be used to compress one or more groups of X when X contains only 0. The "::" can only appear once in the String. - If String is NULL, then ASSERT(). - - If Address is NULL, then ASSERT(). - If String is not aligned in a 16-bit boundary, then ASSERT(). - If PcdMaximumUnicodeStringLength is not zero, and String contains more than - PcdMaximumUnicodeStringLength Unicode characters, not including the - Null-terminator, then ASSERT(). - If EndPointer is not NULL and Address is translated from String, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. @@ -1567,15 +1503,10 @@ StrToIpv6Address ( When /P is in the String, the function stops at the first character that is not a valid decimal digit character after P is converted. - If String is NULL, then ASSERT(). - - If Address is NULL, then ASSERT(). - If String is not aligned in a 16-bit boundary, then ASSERT(). If PcdMaximumUnicodeStringLength is not zero, and String contains more than PcdMaximumUnicodeStringLength Unicode characters, not including the - Null-terminator, then ASSERT(). If EndPointer is not NULL and Address is translated from String, a pointer to the character that stopped the scan is stored at the location pointed to @@ -1640,8 +1571,6 @@ StrToIpv4Address ( oo Data4[48:55] pp Data4[56:63] - If String is NULL, then ASSERT(). - If Guid is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). @param String Pointer to a Null- terminated Unicode string. @@ -1676,17 +1605,6 @@ StrToGuid ( If String is not aligned in a 16-bit boundary, then ASSERT(). - If String is NULL, then ASSERT(). - - If Buffer is NULL, then ASSERT(). - - If Length is not multiple of 2, then ASSERT(). - - If PcdMaximumUnicodeStringLength is not zero and Length is greater than - PcdMaximumUnicodeStringLength, then ASSERT(). - - If MaxBufferSize is less than (Length / 2), then ASSERT(). - @param String Pointer to a Null- terminated Unicode string. @param Length The number of Unicode characters to decode. @param Buffer Pointer to the converted bytes array. @@ -1777,7 +1695,6 @@ UnicodeStrToAsciiStr ( the upper 8 bits, then ASSERT(). If Source is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -1818,22 +1735,23 @@ UnicodeStrToAsciiStrS ( bits of each Unicode character. The function terminates the Ascii string Destination by appending a Null-terminator character at the end. - The caller is responsible to make sure Destination points to a buffer with size - equal or greater than ((StrLen (Source) + 1) * sizeof (CHAR8)) in bytes. + The caller is responsible to make sure Destination points to a buffer with + size not smaller than ((MIN(StrLen(Source), Length) + 1) * sizeof (CHAR8)) + in bytes. If any Unicode characters in Source contain non- zero value in the upper 8 bits, then ASSERT(). If Source is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). - If an error is returned, then the Destination is unmodified. + If an error is returned, then Destination and DestinationLength are + unmodified. @param Source The pointer to a Null- terminated Unicode string. @param Length The maximum number of Unicode characters to convert. @param Destination The pointer to a Null- terminated Ascii string. - @param DestMax The maximum number of Destination Ascii - char, including terminating null char. + @param DestMax The maximum number of Destination Ascii char, + including terminating null char. @param DestinationLength The number of Unicode characters converted. @retval RETURN_SUCCESS String is converted. @@ -2388,10 +2306,6 @@ AsciiStrHexToUint64 ( "::" can be used to compress one or more groups of X when X contains only 0. The "::" can only appear once in the String. - If String is NULL, then ASSERT(). - - If Address is NULL, then ASSERT(). - If EndPointer is not NULL and Address is translated from String, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. @@ -2443,10 +2357,6 @@ AsciiStrToIpv6Address ( When /P is in the String, the function stops at the first character that is not a valid decimal digit character after P is converted. - If String is NULL, then ASSERT(). - - If Address is NULL, then ASSERT(). - If EndPointer is not NULL and Address is translated from String, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. @@ -2508,9 +2418,6 @@ AsciiStrToIpv4Address ( oo Data4[48:55] pp Data4[56:63] - If String is NULL, then ASSERT(). - If Guid is NULL, then ASSERT(). - @param String Pointer to a Null- terminated ASCII string. @param Guid Pointer to the converted GUID. @@ -2541,17 +2448,6 @@ AsciiStrToGuid ( decoding stops after Length of characters and outputs Buffer containing (Length / 2) bytes. - If String is NULL, then ASSERT(). - - If Buffer is NULL, then ASSERT(). - - If Length is not multiple of 2, then ASSERT(). - - If PcdMaximumAsciiStringLength is not zero and Length is greater than - PcdMaximumAsciiStringLength, then ASSERT(). - - If MaxBufferSize is less than (Length / 2), then ASSERT(). - @param String Pointer to a Null- terminated ASCII string. @param Length The number of ASCII characters to decode. @param Buffer Pointer to the converted bytes array. @@ -2632,7 +2528,6 @@ AsciiStrToUnicodeStr ( equal or greater than ((AsciiStrLen (Source) + 1) * sizeof (CHAR16)) in bytes. If Destination is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -2678,7 +2573,6 @@ AsciiStrToUnicodeStrS ( ((MIN(AsciiStrLen(Source), Length) + 1) * sizeof (CHAR8)) in bytes. If Destination is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then Destination and DestinationLength are unmodified. diff --git a/MdePkg/Library/BaseLib/SafeString.c b/MdePkg/Library/BaseLib/SafeString.c index 7dc03d2caa..1db42abb05 100644 --- a/MdePkg/Library/BaseLib/SafeString.c +++ b/MdePkg/Library/BaseLib/SafeString.c @@ -14,7 +14,6 @@ #define SAFE_STRING_CONSTRAINT_CHECK(Expression, Status) \ do { \ - ASSERT (Expression); \ if (!(Expression)) { \ return Status; \ } \ @@ -197,7 +196,6 @@ StrnSizeS ( If Destination is not aligned on a 16-bit boundary, then ASSERT(). If Source is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -279,7 +277,6 @@ StrCpyS ( If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT(). If Length > 0 and Source is not aligned on a 16- bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -372,7 +369,6 @@ StrnCpyS ( If Destination is not aligned on a 16-bit boundary, then ASSERT(). If Source is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -473,7 +469,6 @@ StrCatS ( If Destination is not aligned on a 16-bit boundary, then ASSERT(). If Source is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -590,12 +585,7 @@ StrnCatS ( be ignored. Then, the function stops at the first character that is a not a valid decimal character or a Null-terminator, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). - If PcdMaximumUnicodeStringLength is not zero, and String contains more than - PcdMaximumUnicodeStringLength Unicode characters, not including the - Null-terminator, then ASSERT(). If String has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. @@ -705,12 +695,7 @@ StrDecimalToUintnS ( be ignored. Then, the function stops at the first character that is a not a valid decimal character or a Null-terminator, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). - If PcdMaximumUnicodeStringLength is not zero, and String contains more than - PcdMaximumUnicodeStringLength Unicode characters, not including the - Null-terminator, then ASSERT(). If String has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. @@ -825,12 +810,7 @@ StrDecimalToUint64S ( the first character that is a not a valid hexadecimal character or NULL, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). - If PcdMaximumUnicodeStringLength is not zero, and String contains more than - PcdMaximumUnicodeStringLength Unicode characters, not including the - Null-terminator, then ASSERT(). If String has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. @@ -956,12 +936,7 @@ StrHexToUintnS ( the first character that is a not a valid hexadecimal character or NULL, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). If String is not aligned in a 16-bit boundary, then ASSERT(). - If PcdMaximumUnicodeStringLength is not zero, and String contains more than - PcdMaximumUnicodeStringLength Unicode characters, not including the - Null-terminator, then ASSERT(). If String has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. @@ -1856,8 +1831,6 @@ AsciiStrCpyS ( This function is similar as strncpy_s defined in C11. - If an error would be returned, then the function will also ASSERT(). - If an error is returned, then the Destination is unmodified. @param Destination A pointer to a Null-terminated Ascii string. @@ -1944,8 +1917,6 @@ AsciiStrnCpyS ( This function is similar as strcat_s defined in C11. - If an error would be returned, then the function will also ASSERT(). - If an error is returned, then the Destination is unmodified. @param Destination A pointer to a Null-terminated Ascii string. @@ -2040,8 +2011,6 @@ AsciiStrCatS ( This function is similar as strncat_s defined in C11. - If an error would be returned, then the function will also ASSERT(). - If an error is returned, then the Destination is unmodified. @param Destination A pointer to a Null-terminated Ascii string. @@ -2154,12 +2123,6 @@ AsciiStrnCatS ( be ignored. Then, the function stops at the first character that is a not a valid decimal character or a Null-terminator, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). - If PcdMaximumAsciiStringLength is not zero, and String contains more than - PcdMaximumAsciiStringLength Ascii characters, not including the - Null-terminator, then ASSERT(). - If String has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINTN, then @@ -2266,12 +2229,6 @@ AsciiStrDecimalToUintnS ( be ignored. Then, the function stops at the first character that is a not a valid decimal character or a Null-terminator, whichever one comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). - If PcdMaximumAsciiStringLength is not zero, and String contains more than - PcdMaximumAsciiStringLength Ascii characters, not including the - Null-terminator, then ASSERT(). - If String has no valid decimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINT64, then @@ -2382,12 +2339,6 @@ AsciiStrDecimalToUint64S ( character that is a not a valid hexadecimal character or Null-terminator, whichever on comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). - If PcdMaximumAsciiStringLength is not zero, and String contains more than - PcdMaximumAsciiStringLength Ascii characters, not including the - Null-terminator, then ASSERT(). - If String has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINTN, then @@ -2509,12 +2460,6 @@ AsciiStrHexToUintnS ( character that is a not a valid hexadecimal character or Null-terminator, whichever on comes first. - If String is NULL, then ASSERT(). - If Data is NULL, then ASSERT(). - If PcdMaximumAsciiStringLength is not zero, and String contains more than - PcdMaximumAsciiStringLength Ascii characters, not including the - Null-terminator, then ASSERT(). - If String has no valid hexadecimal digits in the above format, then 0 is stored at the location pointed to by Data. If the number represented by String exceeds the range defined by UINT64, then @@ -2635,7 +2580,6 @@ AsciiStrHexToUint64S ( the upper 8 bits, then ASSERT(). If Source is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then the Destination is unmodified. @@ -2735,7 +2679,6 @@ UnicodeStrToAsciiStrS ( If any Unicode characters in Source contain non- zero value in the upper 8 bits, then ASSERT(). If Source is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then Destination and DestinationLength are unmodified. @@ -2948,7 +2891,6 @@ AsciiStrToUnicodeStrS ( ((MIN(AsciiStrLen(Source), Length) + 1) * sizeof (CHAR8)) in bytes. If Destination is not aligned on a 16-bit boundary, then ASSERT(). - If an error would be returned, then the function will also ASSERT(). If an error is returned, then Destination and DestinationLength are unmodified. @@ -3072,10 +3014,6 @@ AsciiStrnToUnicodeStrS ( "::" can be used to compress one or more groups of X when X contains only 0. The "::" can only appear once in the String. - If String is NULL, then ASSERT(). - - If Address is NULL, then ASSERT(). - If EndPointer is not NULL and Address is translated from String, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. @@ -3291,10 +3229,6 @@ AsciiStrToIpv6Address ( When /P is in the String, the function stops at the first character that is not a valid decimal digit character after P is converted. - If String is NULL, then ASSERT(). - - If Address is NULL, then ASSERT(). - If EndPointer is not NULL and Address is translated from String, a pointer to the character that stopped the scan is stored at the location pointed to by EndPointer. @@ -3448,9 +3382,6 @@ AsciiStrToIpv4Address ( oo Data4[48:55] pp Data4[56:63] - If String is NULL, then ASSERT(). - If Guid is NULL, then ASSERT(). - @param String Pointer to a Null- terminated ASCII string. @param Guid Pointer to the converted GUID. @@ -3550,17 +3481,6 @@ AsciiStrToGuid ( decoding stops after Length of characters and outputs Buffer containing (Length / 2) bytes. - If String is NULL, then ASSERT(). - - If Buffer is NULL, then ASSERT(). - - If Length is not multiple of 2, then ASSERT(). - - If PcdMaximumAsciiStringLength is not zero and Length is greater than - PcdMaximumAsciiStringLength, then ASSERT(). - - If MaxBufferSize is less than (Length / 2), then ASSERT(). - @param String Pointer to a Null- terminated ASCII string. @param Length The number of ASCII characters to decode. @param Buffer Pointer to the converted bytes array. -- 2.24.2 (Apple Git-127)