mirror of https://github.com/acidanthera/audk.git
bbf57d4fb9
The ShellCommandRunSetVar() function calls the ShellIsHexOrDecimalNumber() UefiShellLib function to determine if the data string in the SETVAR command is a string of hexadecimal bytes. However, ShellIsHexOrDecimalNumber() calls ShellConvertStringToUint64() for validation. Therefore SETVAR rejects hex strings that cannot be interpreted as UINT64 values due to range errors, despite the fact that the hexadecimal data string of the SETVAR command is supposed to describe an arbitrary array of bytes, rather than UINT64 values. The internal library function InternalShellIsHexOrDecimalNumber() comes close, as the first idea for the fix, however it is not quite right either; it removes a leading minus sign, plus it allows 0x / 0X prefixes. This would not be correct for the SETVAR command. Instead, add a trivial utility function that is specific to the SETVAR implementation. IsStringOfHexNibbles() accepts empty strings for simplicity, but where we call it we have already ensured that the data string is not empty (because that is handled earlier by the "delete variable" branch of SETVAR). An even number of nibbles is also enforced near the call site. Cc: Jaben Carsey <jaben.carsey@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17128 6f19259b-4bc3-4df7-8a09-765794883524 |
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| .. | ||
| UefiDpLib | ||
| UefiHandleParsingLib | ||
| UefiShellBcfgCommandLib | ||
| UefiShellCEntryLib | ||
| UefiShellCommandLib | ||
| UefiShellDebug1CommandsLib | ||
| UefiShellDriver1CommandsLib | ||
| UefiShellInstall1CommandsLib | ||
| UefiShellLevel1CommandsLib | ||
| UefiShellLevel2CommandsLib | ||
| UefiShellLevel3CommandsLib | ||
| UefiShellLib | ||
| UefiShellNetwork1CommandsLib | ||