mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-18 15:27:48 +01:00
382 lines
14 KiB
C
382 lines
14 KiB
C
/** @file
|
|
|
|
EFI_REGULAR_EXPRESSION_PROTOCOL Implementation
|
|
|
|
(C) Copyright 2015-2016 Hewlett Packard Enterprise Development LP<BR>
|
|
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include "RegularExpressionDxe.h"
|
|
|
|
STATIC
|
|
EFI_REGEX_SYNTAX_TYPE * CONST mSupportedSyntaxes[] = {
|
|
&gEfiRegexSyntaxTypePosixExtendedGuid,
|
|
&gEfiRegexSyntaxTypePerlGuid
|
|
};
|
|
|
|
STATIC
|
|
EFI_REGULAR_EXPRESSION_PROTOCOL mProtocolInstance = {
|
|
RegularExpressionMatch,
|
|
RegularExpressionGetInfo
|
|
};
|
|
|
|
|
|
|
|
#define CHAR16_ENCODING ONIG_ENCODING_UTF16_LE
|
|
|
|
/**
|
|
Call the Oniguruma regex match API.
|
|
|
|
Same parameters as RegularExpressionMatch, except SyntaxType is required.
|
|
|
|
@param String A pointer to a NULL terminated string to match against the
|
|
regular expression string specified by Pattern.
|
|
|
|
@param Pattern A pointer to a NULL terminated string that represents the
|
|
regular expression.
|
|
@param SyntaxType A pointer to the EFI_REGEX_SYNTAX_TYPE that identifies the
|
|
regular expression syntax type to use. May be NULL in which
|
|
case the function will use its default regular expression
|
|
syntax type.
|
|
|
|
@param Result On return, points to TRUE if String fully matches against
|
|
the regular expression Pattern using the regular expression
|
|
SyntaxType. Otherwise, points to FALSE.
|
|
|
|
@param Captures A Pointer to an array of EFI_REGEX_CAPTURE objects to receive
|
|
the captured groups in the event of a match. The full
|
|
sub-string match is put in Captures[0], and the results of N
|
|
capturing groups are put in Captures[1:N]. If Captures is
|
|
NULL, then this function doesn't allocate the memory for the
|
|
array and does not build up the elements. It only returns the
|
|
number of matching patterns in CapturesCount. If Captures is
|
|
not NULL, this function returns a pointer to an array and
|
|
builds up the elements in the array. CapturesCount is also
|
|
updated to the number of matching patterns found. It is the
|
|
caller's responsibility to free the memory pool in Captures
|
|
and in each CapturePtr in the array elements.
|
|
|
|
@param CapturesCount On output, CapturesCount is the number of matching patterns
|
|
found in String. Zero means no matching patterns were found
|
|
in the string.
|
|
|
|
@retval EFI_SUCCESS Regex compilation and match completed successfully.
|
|
@retval EFI_DEVICE_ERROR Regex compilation failed.
|
|
|
|
**/
|
|
STATIC
|
|
EFI_STATUS
|
|
OnigurumaMatch (
|
|
IN CHAR16 *String,
|
|
IN CHAR16 *Pattern,
|
|
IN EFI_REGEX_SYNTAX_TYPE *SyntaxType,
|
|
OUT BOOLEAN *Result,
|
|
OUT EFI_REGEX_CAPTURE **Captures, OPTIONAL
|
|
OUT UINTN *CapturesCount
|
|
)
|
|
{
|
|
regex_t *OnigRegex;
|
|
OnigSyntaxType *OnigSyntax;
|
|
OnigRegion *Region;
|
|
INT32 OnigResult;
|
|
OnigErrorInfo ErrorInfo;
|
|
OnigUChar ErrorMessage[ONIG_MAX_ERROR_MESSAGE_LEN];
|
|
UINT32 Index;
|
|
OnigUChar *Start;
|
|
EFI_STATUS Status;
|
|
|
|
|
|
Status = EFI_SUCCESS;
|
|
|
|
//
|
|
// Detemine the internal syntax type
|
|
//
|
|
OnigSyntax = ONIG_SYNTAX_DEFAULT;
|
|
if (CompareGuid (SyntaxType, &gEfiRegexSyntaxTypePosixExtendedGuid)) {
|
|
OnigSyntax = ONIG_SYNTAX_POSIX_EXTENDED;
|
|
} else if (CompareGuid (SyntaxType, &gEfiRegexSyntaxTypePerlGuid)) {
|
|
OnigSyntax = ONIG_SYNTAX_PERL;
|
|
} else {
|
|
DEBUG ((DEBUG_ERROR, "Unsupported regex syntax - using default\n"));
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
//
|
|
// Compile pattern
|
|
//
|
|
Start = (OnigUChar*)Pattern;
|
|
OnigResult = onig_new (
|
|
&OnigRegex,
|
|
Start,
|
|
Start + onigenc_str_bytelen_null (CHAR16_ENCODING, Start),
|
|
ONIG_OPTION_DEFAULT,
|
|
CHAR16_ENCODING,
|
|
OnigSyntax,
|
|
&ErrorInfo
|
|
);
|
|
|
|
if (OnigResult != ONIG_NORMAL) {
|
|
onig_error_code_to_str (ErrorMessage, OnigResult, &ErrorInfo);
|
|
DEBUG ((DEBUG_ERROR, "Regex compilation failed: %a\n", ErrorMessage));
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
//
|
|
// Try to match
|
|
//
|
|
Start = (OnigUChar*)String;
|
|
Region = onig_region_new ();
|
|
if (Region == NULL) {
|
|
onig_free (OnigRegex);
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
OnigResult = onig_search (
|
|
OnigRegex,
|
|
Start,
|
|
Start + onigenc_str_bytelen_null (CHAR16_ENCODING, Start),
|
|
Start,
|
|
Start + onigenc_str_bytelen_null (CHAR16_ENCODING, Start),
|
|
Region,
|
|
ONIG_OPTION_NONE
|
|
);
|
|
|
|
if (OnigResult >= 0) {
|
|
*Result = TRUE;
|
|
} else {
|
|
*Result = FALSE;
|
|
if (OnigResult != ONIG_MISMATCH) {
|
|
onig_error_code_to_str (ErrorMessage, OnigResult);
|
|
DEBUG ((DEBUG_ERROR, "Regex match failed: %a\n", ErrorMessage));
|
|
onig_region_free (Region, 1);
|
|
onig_free (OnigRegex);
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
}
|
|
|
|
//
|
|
// If successful, copy out the region (capture) information
|
|
//
|
|
if (*Result && Captures != NULL) {
|
|
*CapturesCount = Region->num_regs;
|
|
*Captures = AllocateZeroPool (*CapturesCount * sizeof(**Captures));
|
|
if (*Captures != NULL) {
|
|
for (Index = 0; Index < *CapturesCount; ++Index) {
|
|
//
|
|
// Region beg/end values represent bytes, not characters
|
|
//
|
|
(*Captures)[Index].Length = (Region->end[Index] - Region->beg[Index]) / sizeof(CHAR16);
|
|
(*Captures)[Index].CapturePtr = AllocateCopyPool (
|
|
((*Captures)[Index].Length) * sizeof (CHAR16),
|
|
(CHAR16*)((UINTN)String + Region->beg[Index])
|
|
);
|
|
if ((*Captures)[Index].CapturePtr == NULL) {
|
|
Status = EFI_OUT_OF_RESOURCES;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
for (Index = 0; Index < *CapturesCount; ++Index) {
|
|
if ((*Captures)[Index].CapturePtr != NULL) {
|
|
FreePool ((CHAR16*)(*Captures)[Index].CapturePtr);
|
|
}
|
|
}
|
|
FreePool (*Captures);
|
|
}
|
|
}
|
|
}
|
|
|
|
onig_region_free (Region, 1);
|
|
onig_free (OnigRegex);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Returns information about the regular expression syntax types supported
|
|
by the implementation.
|
|
|
|
@param This A pointer to the EFI_REGULAR_EXPRESSION_PROTOCOL
|
|
instance.
|
|
|
|
@param RegExSyntaxTypeListSize On input, the size in bytes of RegExSyntaxTypeList.
|
|
On output with a return code of EFI_SUCCESS, the
|
|
size in bytes of the data returned in
|
|
RegExSyntaxTypeList. On output with a return code
|
|
of EFI_BUFFER_TOO_SMALL, the size of
|
|
RegExSyntaxTypeList required to obtain the list.
|
|
|
|
@param RegExSyntaxTypeList A caller-allocated memory buffer filled by the
|
|
driver with one EFI_REGEX_SYNTAX_TYPE element
|
|
for each supported Regular expression syntax
|
|
type. The list must not change across multiple
|
|
calls to the same driver. The first syntax
|
|
type in the list is the default type for the
|
|
driver.
|
|
|
|
@retval EFI_SUCCESS The regular expression syntax types list
|
|
was returned successfully.
|
|
@retval EFI_UNSUPPORTED The service is not supported by this driver.
|
|
@retval EFI_DEVICE_ERROR The list of syntax types could not be
|
|
retrieved due to a hardware or firmware error.
|
|
@retval EFI_BUFFER_TOO_SMALL The buffer RegExSyntaxTypeList is too small
|
|
to hold the result.
|
|
@retval EFI_INVALID_PARAMETER RegExSyntaxTypeListSize is NULL
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
RegularExpressionGetInfo (
|
|
IN EFI_REGULAR_EXPRESSION_PROTOCOL *This,
|
|
IN OUT UINTN *RegExSyntaxTypeListSize,
|
|
OUT EFI_REGEX_SYNTAX_TYPE *RegExSyntaxTypeList
|
|
)
|
|
{
|
|
UINTN SyntaxSize;
|
|
UINTN Index;
|
|
|
|
if (This == NULL || RegExSyntaxTypeListSize == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (*RegExSyntaxTypeListSize != 0 && RegExSyntaxTypeList == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
SyntaxSize = ARRAY_SIZE (mSupportedSyntaxes) * sizeof(**mSupportedSyntaxes);
|
|
|
|
if (*RegExSyntaxTypeListSize < SyntaxSize) {
|
|
*RegExSyntaxTypeListSize = SyntaxSize;
|
|
return EFI_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
for (Index = 0; Index < ARRAY_SIZE (mSupportedSyntaxes); ++Index) {
|
|
CopyMem (&RegExSyntaxTypeList[Index], mSupportedSyntaxes[Index], sizeof(**mSupportedSyntaxes));
|
|
}
|
|
*RegExSyntaxTypeListSize = SyntaxSize;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Checks if the input string matches to the regular expression pattern.
|
|
|
|
@param This A pointer to the EFI_REGULAR_EXPRESSION_PROTOCOL instance.
|
|
Type EFI_REGULAR_EXPRESSION_PROTOCOL is defined in Section
|
|
XYZ.
|
|
|
|
@param String A pointer to a NULL terminated string to match against the
|
|
regular expression string specified by Pattern.
|
|
|
|
@param Pattern A pointer to a NULL terminated string that represents the
|
|
regular expression.
|
|
|
|
@param SyntaxType A pointer to the EFI_REGEX_SYNTAX_TYPE that identifies the
|
|
regular expression syntax type to use. May be NULL in which
|
|
case the function will use its default regular expression
|
|
syntax type.
|
|
|
|
@param Result On return, points to TRUE if String fully matches against
|
|
the regular expression Pattern using the regular expression
|
|
SyntaxType. Otherwise, points to FALSE.
|
|
|
|
@param Captures A Pointer to an array of EFI_REGEX_CAPTURE objects to receive
|
|
the captured groups in the event of a match. The full
|
|
sub-string match is put in Captures[0], and the results of N
|
|
capturing groups are put in Captures[1:N]. If Captures is
|
|
NULL, then this function doesn't allocate the memory for the
|
|
array and does not build up the elements. It only returns the
|
|
number of matching patterns in CapturesCount. If Captures is
|
|
not NULL, this function returns a pointer to an array and
|
|
builds up the elements in the array. CapturesCount is also
|
|
updated to the number of matching patterns found. It is the
|
|
caller's responsibility to free the memory pool in Captures
|
|
and in each CapturePtr in the array elements.
|
|
|
|
@param CapturesCount On output, CapturesCount is the number of matching patterns
|
|
found in String. Zero means no matching patterns were found
|
|
in the string.
|
|
|
|
@retval EFI_SUCCESS The regular expression string matching
|
|
completed successfully.
|
|
@retval EFI_UNSUPPORTED The regular expression syntax specified by
|
|
SyntaxType is not supported by this driver.
|
|
@retval EFI_DEVICE_ERROR The regular expression string matching
|
|
failed due to a hardware or firmware error.
|
|
@retval EFI_INVALID_PARAMETER String, Pattern, Result, or CapturesCountis
|
|
NULL.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
RegularExpressionMatch (
|
|
IN EFI_REGULAR_EXPRESSION_PROTOCOL *This,
|
|
IN CHAR16 *String,
|
|
IN CHAR16 *Pattern,
|
|
IN EFI_REGEX_SYNTAX_TYPE *SyntaxType, OPTIONAL
|
|
OUT BOOLEAN *Result,
|
|
OUT EFI_REGEX_CAPTURE **Captures, OPTIONAL
|
|
OUT UINTN *CapturesCount
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINT32 Index;
|
|
BOOLEAN Supported;
|
|
|
|
if (This == NULL || String == NULL || Pattern == NULL || Result == NULL || CapturesCount == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Figure out which syntax to use
|
|
//
|
|
if (SyntaxType == NULL) {
|
|
SyntaxType = mSupportedSyntaxes[0];
|
|
} else {
|
|
Supported = FALSE;
|
|
for (Index = 0; Index < ARRAY_SIZE (mSupportedSyntaxes); ++Index) {
|
|
if (CompareGuid (SyntaxType, mSupportedSyntaxes[Index])) {
|
|
Supported = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
if (!Supported) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
}
|
|
|
|
Status = OnigurumaMatch (String, Pattern, SyntaxType, Result, Captures, CapturesCount);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Entry point for RegularExpressionDxe.
|
|
|
|
@param ImageHandle Image handle this driver.
|
|
@param SystemTable Pointer to SystemTable.
|
|
|
|
@retval Status Whether this function complete successfully.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
RegularExpressionDxeEntry (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
Status = gBS->InstallMultipleProtocolInterfaces (
|
|
&ImageHandle,
|
|
&gEfiRegularExpressionProtocolGuid,
|
|
&mProtocolInstance,
|
|
NULL
|
|
);
|
|
|
|
return Status;
|
|
}
|