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audk/RedfishPkg/RestJsonStructureDxe/RestJsonStructureDxe.c

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/** @file
The implementation of EFI REST Resource JSON to C structure convertor
Protocol.
(C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi.h>
#include <Protocol/RestJsonStructure.h>
#include "RestJsonStructureInternal.h"
LIST_ENTRY mRestJsonStructureList;
EFI_HANDLE mProtocolHandle;
/**
This function registers Restful resource interpreter for the
specific schema.
@param[in] This This is the EFI_REST_JSON_STRUCTURE_PROTOCOL instance.
@param[in] JsonStructureSupported The type and version of REST JSON resource which this converter
supports.
@param[in] ToStructure The function to convert REST JSON resource to structure.
@param[in] ToJson The function to convert REST JSON structure to JSON in text format.
@param[in] DestroyStructure Destroy REST JSON structure returned in ToStructure() function.
@retval EFI_SUCCESS Register successfully.
@retval Others Fail to register.
**/
EFI_STATUS
EFIAPI
RestJsonStructureRegister (
IN EFI_REST_JSON_STRUCTURE_PROTOCOL *This,
IN EFI_REST_JSON_STRUCTURE_SUPPORTED *JsonStructureSupported,
IN EFI_REST_JSON_STRUCTURE_TO_STRUCTURE ToStructure,
IN EFI_REST_JSON_STRUCTURE_TO_JSON ToJson,
IN EFI_REST_JSON_STRUCTURE_DESTORY_STRUCTURE DestroyStructure
)
{
UINTN NumberOfNS;
UINTN Index;
LIST_ENTRY *ThisList;
REST_JSON_STRUCTURE_INSTANCE *Instance;
EFI_REST_JSON_RESOURCE_TYPE_IDENTIFIER *CloneSupportedInterpId;
EFI_REST_JSON_STRUCTURE_SUPPORTED *ThisSupportedInterp;
if ((This == NULL) ||
(ToStructure == NULL) ||
(ToJson == NULL) ||
(DestroyStructure == NULL) ||
(JsonStructureSupported == NULL)
)
{
return EFI_INVALID_PARAMETER;
}
//
// Check how many name space interpreter can interpret.
//
ThisList = &JsonStructureSupported->NextSupportedRsrcInterp;
NumberOfNS = 1;
while (TRUE) {
if (ThisList->ForwardLink == &JsonStructureSupported->NextSupportedRsrcInterp) {
break;
} else {
ThisList = ThisList->ForwardLink;
NumberOfNS++;
}
}
Instance =
(REST_JSON_STRUCTURE_INSTANCE *)AllocateZeroPool (sizeof (REST_JSON_STRUCTURE_INSTANCE) + NumberOfNS * sizeof (EFI_REST_JSON_RESOURCE_TYPE_IDENTIFIER));
if (Instance == NULL) {
return EFI_OUT_OF_RESOURCES;
}
InitializeListHead (&Instance->NextRestJsonStructureInstance);
Instance->NumberOfNameSpaceToConvert = NumberOfNS;
Instance->SupportedRsrcIndentifier = (EFI_REST_JSON_RESOURCE_TYPE_IDENTIFIER *)((REST_JSON_STRUCTURE_INSTANCE *)Instance + 1);
//
// Copy supported resource identifer interpreter.
//
CloneSupportedInterpId = Instance->SupportedRsrcIndentifier;
ThisSupportedInterp = JsonStructureSupported;
for (Index = 0; Index < NumberOfNS; Index++) {
CopyMem ((VOID *)CloneSupportedInterpId, (VOID *)&ThisSupportedInterp->RestResourceInterp, sizeof (EFI_REST_JSON_RESOURCE_TYPE_IDENTIFIER));
ThisSupportedInterp = (EFI_REST_JSON_STRUCTURE_SUPPORTED *)ThisSupportedInterp->NextSupportedRsrcInterp.ForwardLink;
CloneSupportedInterpId++;
}
Instance->JsonToStructure = ToStructure;
Instance->StructureToJson = ToJson;
Instance->DestroyStructure = DestroyStructure;
InsertTailList (&mRestJsonStructureList, &Instance->NextRestJsonStructureInstance);
return EFI_SUCCESS;
}
/**
This function check if this interpreter instance support the given namesapce.
@param[in] This EFI_REST_JSON_STRUCTURE_PROTOCOL instance.
@param[in] InterpreterInstance REST_JSON_STRUCTURE_INSTANCE
@param[in] RsrcTypeIdentifier Resource type identifier.
@param[in] ResourceRaw Given Restful resource.
@param[out] RestJSonHeader Property interpreted from given ResourceRaw.
@retval EFI_SUCCESS
@retval Others.
**/
EFI_STATUS
InterpreterInstanceToStruct (
IN EFI_REST_JSON_STRUCTURE_PROTOCOL *This,
IN REST_JSON_STRUCTURE_INSTANCE *InterpreterInstance,
IN EFI_REST_JSON_RESOURCE_TYPE_IDENTIFIER *RsrcTypeIdentifier OPTIONAL,
IN CHAR8 *ResourceRaw,
OUT EFI_REST_JSON_STRUCTURE_HEADER **RestJSonHeader
)
{
UINTN Index;
EFI_STATUS Status;
EFI_REST_JSON_RESOURCE_TYPE_IDENTIFIER *ThisSupportedRsrcTypeId;
if ((This == NULL) ||
(InterpreterInstance == NULL) ||
(ResourceRaw == NULL) ||
(RestJSonHeader == NULL)
)
{
return EFI_INVALID_PARAMETER;
}
Status = EFI_UNSUPPORTED;
if (RsrcTypeIdentifier == NULL) {
//
// No resource type identifier, send to intepreter anyway.
// Interpreter may recognize this resource.
//
Status = InterpreterInstance->JsonToStructure (
This,
NULL,
ResourceRaw,
RestJSonHeader
);
} else {
//
// Check if the namesapce and version is supported by this interpreter.
//
ThisSupportedRsrcTypeId = InterpreterInstance->SupportedRsrcIndentifier;
for (Index = 0; Index < InterpreterInstance->NumberOfNameSpaceToConvert; Index++) {
if (AsciiStrCmp (
RsrcTypeIdentifier->NameSpace.ResourceTypeName,
ThisSupportedRsrcTypeId->NameSpace.ResourceTypeName
) == 0)
{
if ((RsrcTypeIdentifier->NameSpace.MajorVersion == NULL) &&
(RsrcTypeIdentifier->NameSpace.MinorVersion == NULL) &&
(RsrcTypeIdentifier->NameSpace.ErrataVersion == NULL)
)
{
//
// Don't check version of this resource type identifier.
//
Status = InterpreterInstance->JsonToStructure (
This,
RsrcTypeIdentifier,
ResourceRaw,
RestJSonHeader
);
break;
} else {
//
// Check version.
//
if ((AsciiStrCmp (
RsrcTypeIdentifier->NameSpace.MajorVersion,
ThisSupportedRsrcTypeId->NameSpace.MajorVersion
) == 0) &&
(AsciiStrCmp (
RsrcTypeIdentifier->NameSpace.MinorVersion,
ThisSupportedRsrcTypeId->NameSpace.MinorVersion
) == 0) &&
(AsciiStrCmp (
RsrcTypeIdentifier->NameSpace.ErrataVersion,
ThisSupportedRsrcTypeId->NameSpace.ErrataVersion
) == 0))
{
Status = InterpreterInstance->JsonToStructure (
This,
RsrcTypeIdentifier,
ResourceRaw,
RestJSonHeader
);
break;
}
}
}
ThisSupportedRsrcTypeId++;
}
}
return Status;
}
/**
This function converts JSON C structure to JSON property.
@param[in] This EFI_REST_JSON_STRUCTURE_PROTOCOL instance.
@param[in] InterpreterInstance REST_JSON_STRUCTURE_INSTANCE
@param[in] RestJSonHeader Resource type identifier.
@param[out] ResourceRaw Output in JSON text format.
@retval EFI_SUCCESS
@retval Others.
**/
EFI_STATUS
InterpreterEfiStructToInstance (
IN EFI_REST_JSON_STRUCTURE_PROTOCOL *This,
IN REST_JSON_STRUCTURE_INSTANCE *InterpreterInstance,
IN EFI_REST_JSON_STRUCTURE_HEADER *RestJSonHeader,
OUT CHAR8 **ResourceRaw
)
{
UINTN Index;
EFI_STATUS Status;
EFI_REST_JSON_RESOURCE_TYPE_IDENTIFIER *ThisSupportedRsrcTypeId;
EFI_REST_JSON_RESOURCE_TYPE_IDENTIFIER *RsrcTypeIdentifier;
if ((This == NULL) ||
(InterpreterInstance == NULL) ||
(RestJSonHeader == NULL) ||
(ResourceRaw == NULL)
)
{
return EFI_INVALID_PARAMETER;
}
RsrcTypeIdentifier = &RestJSonHeader->JsonRsrcIdentifier;
if ((RsrcTypeIdentifier == NULL) ||
(RsrcTypeIdentifier->NameSpace.ResourceTypeName == NULL) ||
(RsrcTypeIdentifier->NameSpace.MajorVersion == NULL) ||
(RsrcTypeIdentifier->NameSpace.MinorVersion == NULL) ||
(RsrcTypeIdentifier->NameSpace.ErrataVersion == NULL)
)
{
return EFI_INVALID_PARAMETER;
}
//
// Check if the namesapce and version is supported by this interpreter.
//
Status = EFI_UNSUPPORTED;
ThisSupportedRsrcTypeId = InterpreterInstance->SupportedRsrcIndentifier;
for (Index = 0; Index < InterpreterInstance->NumberOfNameSpaceToConvert; Index++) {
if (AsciiStrCmp (
RsrcTypeIdentifier->NameSpace.ResourceTypeName,
ThisSupportedRsrcTypeId->NameSpace.ResourceTypeName
) == 0)
{
//
// Check version.
//
if ((AsciiStrCmp (
RsrcTypeIdentifier->NameSpace.MajorVersion,
ThisSupportedRsrcTypeId->NameSpace.MajorVersion
) == 0) &&
(AsciiStrCmp (
RsrcTypeIdentifier->NameSpace.MinorVersion,
ThisSupportedRsrcTypeId->NameSpace.MinorVersion
) == 0) &&
(AsciiStrCmp (
RsrcTypeIdentifier->NameSpace.ErrataVersion,
ThisSupportedRsrcTypeId->NameSpace.ErrataVersion
) == 0))
{
Status = InterpreterInstance->StructureToJson (
This,
RestJSonHeader,
ResourceRaw
);
break;
}
}
ThisSupportedRsrcTypeId++;
}
return Status;
}
/**
This function destory REST property structure.
@param[in] This EFI_REST_JSON_STRUCTURE_PROTOCOL instance.
@param[in] InterpreterInstance REST_JSON_STRUCTURE_INSTANCE
@param[in] RestJSonHeader Property interpreted from given ResourceRaw.
@retval EFI_SUCCESS
@retval Others.
**/
EFI_STATUS
InterpreterInstanceDestoryJsonStruct (
IN EFI_REST_JSON_STRUCTURE_PROTOCOL *This,
IN REST_JSON_STRUCTURE_INSTANCE *InterpreterInstance,
IN EFI_REST_JSON_STRUCTURE_HEADER *RestJSonHeader
)
{
UINTN Index;
EFI_STATUS Status;
EFI_REST_JSON_RESOURCE_TYPE_IDENTIFIER *ThisSupportedRsrcTypeId;
if ((This == NULL) ||
(InterpreterInstance == NULL) ||
(RestJSonHeader == NULL)
)
{
return EFI_INVALID_PARAMETER;
}
Status = EFI_UNSUPPORTED;
//
// Check if the namesapce and version is supported by this interpreter.
//
ThisSupportedRsrcTypeId = InterpreterInstance->SupportedRsrcIndentifier;
for (Index = 0; Index < InterpreterInstance->NumberOfNameSpaceToConvert; Index++) {
if (AsciiStrCmp (
RestJSonHeader->JsonRsrcIdentifier.NameSpace.ResourceTypeName,
ThisSupportedRsrcTypeId->NameSpace.ResourceTypeName
) == 0)
{
if ((RestJSonHeader->JsonRsrcIdentifier.NameSpace.MajorVersion == NULL) &&
(RestJSonHeader->JsonRsrcIdentifier.NameSpace.MinorVersion == NULL) &&
(RestJSonHeader->JsonRsrcIdentifier.NameSpace.ErrataVersion == NULL)
)
{
//
// Don't check version of this resource type identifier.
//
Status = InterpreterInstance->DestroyStructure (
This,
RestJSonHeader
);
break;
} else {
//
// Check version.
//
if ((AsciiStrCmp (
RestJSonHeader->JsonRsrcIdentifier.NameSpace.MajorVersion,
ThisSupportedRsrcTypeId->NameSpace.MajorVersion
) == 0) &&
(AsciiStrCmp (
RestJSonHeader->JsonRsrcIdentifier.NameSpace.MinorVersion,
ThisSupportedRsrcTypeId->NameSpace.MinorVersion
) == 0) &&
(AsciiStrCmp (
RestJSonHeader->JsonRsrcIdentifier.NameSpace.ErrataVersion,
ThisSupportedRsrcTypeId->NameSpace.ErrataVersion
) == 0))
{
Status = InterpreterInstance->DestroyStructure (
This,
RestJSonHeader
);
break;
}
}
}
ThisSupportedRsrcTypeId++;
}
return Status;
}
/**
This function translates the given JSON text to JSON C Structure.
@param[in] This EFI_REST_JSON_STRUCTURE_PROTOCOL instance.
@param[in] RsrcTypeIdentifier Resource type identifier.
@param[in] ResourceJsonText Given Restful resource.
@param[out] JsonStructure Property interpreted from given ResourceRaw.
@retval EFI_SUCCESS
@retval Others.
**/
EFI_STATUS
EFIAPI
RestJsonStructureToStruct (
IN EFI_REST_JSON_STRUCTURE_PROTOCOL *This,
IN EFI_REST_JSON_RESOURCE_TYPE_IDENTIFIER *RsrcTypeIdentifier OPTIONAL,
IN CHAR8 *ResourceJsonText,
OUT EFI_REST_JSON_STRUCTURE_HEADER **JsonStructure
)
{
EFI_STATUS Status;
REST_JSON_STRUCTURE_INSTANCE *Instance;
if ((This == NULL) ||
(ResourceJsonText == NULL) ||
(JsonStructure == NULL)
)
{
return EFI_INVALID_PARAMETER;
}
if (IsListEmpty (&mRestJsonStructureList)) {
return EFI_UNSUPPORTED;
}
Status = EFI_SUCCESS;
Instance = (REST_JSON_STRUCTURE_INSTANCE *)GetFirstNode (&mRestJsonStructureList);
while (TRUE) {
Status = InterpreterInstanceToStruct (
This,
Instance,
RsrcTypeIdentifier,
ResourceJsonText,
JsonStructure
);
if (!EFI_ERROR (Status)) {
break;
}
if (IsNodeAtEnd (&mRestJsonStructureList, &Instance->NextRestJsonStructureInstance)) {
Status = EFI_UNSUPPORTED;
break;
}
Instance = (REST_JSON_STRUCTURE_INSTANCE *)GetNextNode (&mRestJsonStructureList, &Instance->NextRestJsonStructureInstance);
}
return Status;
}
/**
This function destory REST property EFI structure which returned in
JsonToStructure().
@param[in] This EFI_REST_JSON_STRUCTURE_PROTOCOL instance.
@param[in] RestJSonHeader Property to destory.
@retval EFI_SUCCESS
@retval Others
**/
EFI_STATUS
EFIAPI
RestJsonStructureDestroyStruct (
IN EFI_REST_JSON_STRUCTURE_PROTOCOL *This,
IN EFI_REST_JSON_STRUCTURE_HEADER *RestJSonHeader
)
{
EFI_STATUS Status;
REST_JSON_STRUCTURE_INSTANCE *Instance;
if ((This == NULL) || (RestJSonHeader == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (IsListEmpty (&mRestJsonStructureList)) {
return EFI_UNSUPPORTED;
}
Status = EFI_SUCCESS;
Instance = (REST_JSON_STRUCTURE_INSTANCE *)GetFirstNode (&mRestJsonStructureList);
while (TRUE) {
Status = InterpreterInstanceDestoryJsonStruct (
This,
Instance,
RestJSonHeader
);
if (!EFI_ERROR (Status)) {
break;
}
if (IsNodeAtEnd (&mRestJsonStructureList, &Instance->NextRestJsonStructureInstance)) {
Status = EFI_UNSUPPORTED;
break;
}
Instance = (REST_JSON_STRUCTURE_INSTANCE *)GetNextNode (&mRestJsonStructureList, &Instance->NextRestJsonStructureInstance);
}
return Status;
}
/**
This function translates the given JSON C Structure to JSON text.
@param[in] This EFI_REST_JSON_STRUCTURE_PROTOCOL instance.
@param[in] RestJSonHeader Given Restful resource.
@param[out] ResourceRaw Resource in RESTfuls service oriented.
@retval EFI_SUCCESS
@retval Others Fail to remove the entry
**/
EFI_STATUS
EFIAPI
RestJsonStructureToJson (
IN EFI_REST_JSON_STRUCTURE_PROTOCOL *This,
IN EFI_REST_JSON_STRUCTURE_HEADER *RestJSonHeader,
OUT CHAR8 **ResourceRaw
)
{
EFI_STATUS Status;
REST_JSON_STRUCTURE_INSTANCE *Instance;
if ((This == NULL) || (RestJSonHeader == NULL) || (ResourceRaw == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (IsListEmpty (&mRestJsonStructureList)) {
return EFI_UNSUPPORTED;
}
Status = EFI_SUCCESS;
Instance = (REST_JSON_STRUCTURE_INSTANCE *)GetFirstNode (&mRestJsonStructureList);
while (TRUE) {
Status = InterpreterEfiStructToInstance (
This,
Instance,
RestJSonHeader,
ResourceRaw
);
if (!EFI_ERROR (Status)) {
break;
}
if (IsNodeAtEnd (&mRestJsonStructureList, &Instance->NextRestJsonStructureInstance)) {
Status = EFI_UNSUPPORTED;
break;
}
Instance = (REST_JSON_STRUCTURE_INSTANCE *)GetNextNode (&mRestJsonStructureList, &Instance->NextRestJsonStructureInstance);
}
return Status;
}
EFI_REST_JSON_STRUCTURE_PROTOCOL mRestJsonStructureProtocol = {
RestJsonStructureRegister,
RestJsonStructureToStruct,
RestJsonStructureToJson,
RestJsonStructureDestroyStruct
};
/**
This is the declaration of an EFI image entry point.
@param ImageHandle The firmware allocated handle for the UEFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The operation completed successfully.
@retval Others An unexpected error occurred.
**/
EFI_STATUS
EFIAPI
RestJsonStructureEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
InitializeListHead (&mRestJsonStructureList);
//
// Install the Restful Resource Interpreter Protocol.
//
mProtocolHandle = NULL;
Status = gBS->InstallProtocolInterface (
&mProtocolHandle,
&gEfiRestJsonStructureProtocolGuid,
EFI_NATIVE_INTERFACE,
(VOID *)&mRestJsonStructureProtocol
);
return Status;
}
/**
This is the unload handle for Redfish discover module.
Disconnect the driver specified by ImageHandle from all the devices in the handle database.
Uninstall all the protocols installed in the driver entry point.
@param[in] ImageHandle The drivers' driver image.
@retval EFI_SUCCESS The image is unloaded.
@retval Others Failed to unload the image.
**/
EFI_STATUS
EFIAPI
RestJsonStructureUnload (
IN EFI_HANDLE ImageHandle
)
{
EFI_STATUS Status;
REST_JSON_STRUCTURE_INSTANCE *Instance;
REST_JSON_STRUCTURE_INSTANCE *NextInstance;
Status = gBS->UninstallProtocolInterface (
mProtocolHandle,
&gEfiRestJsonStructureProtocolGuid,
(VOID *)&mRestJsonStructureProtocol
);
if (IsListEmpty (&mRestJsonStructureList)) {
return Status;
}
//
// Free memory of REST_JSON_STRUCTURE_INSTANCE instance.
//
Instance = (REST_JSON_STRUCTURE_INSTANCE *)GetFirstNode (&mRestJsonStructureList);
do {
NextInstance = NULL;
if (!IsNodeAtEnd (&mRestJsonStructureList, &Instance->NextRestJsonStructureInstance)) {
NextInstance = (REST_JSON_STRUCTURE_INSTANCE *)GetNextNode (&mRestJsonStructureList, &Instance->NextRestJsonStructureInstance);
}
FreePool ((VOID *)Instance);
Instance = NextInstance;
} while (Instance != NULL);
return Status;
}
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