[edk2-staging][PATCH v2 09/15] edk2-staging/RedfishClientPkg: Update RedfishLib

["Nickle Wang" <nickle.wang@hpe.com>]

RedfishLib has no capability to return HTTP header in response.
However, feature driver needs to know the information like "ETag" or
"Location" in HTTP response header per Redfish specification. Add
corresponding function to return HTTP header in response data.

Signed-off-by: Nickle Wang <nickle.wang@hpe.com>
Cc: Abner Chang <abner.chang@amd.com>
Cc: Yang Atom <Atom.Yang@amd.com>
Cc: Nick Ramirez <nramirez@nvidia.com>
---
 .../PrivateLibrary/RedfishLib/RedfishLib.c    |  12 +-
 .../edk2libredfish/include/redfishPayload.h   |   5 +-
 .../edk2libredfish/include/redfishService.h   |   5 +-
 .../RedfishLib/edk2libredfish/src/payload.c   |  90 ++-
 .../RedfishLib/edk2libredfish/src/service.c   | 554 +++++++++++++++++-
 5 files changed, 657 insertions(+), 9 deletions(-)

diff --git a/RedfishClientPkg/PrivateLibrary/RedfishLib/RedfishLib.c b/RedfishClientPkg/PrivateLibrary/RedfishLib/RedfishLib.c
index 18aa4646e8..b8ca493e24 100644
--- a/RedfishClientPkg/PrivateLibrary/RedfishLib/RedfishLib.c
+++ b/RedfishClientPkg/PrivateLibrary/RedfishLib/RedfishLib.c
@@ -3,7 +3,7 @@
   (CRUD) Redfish resources and provide basic query.
 
   Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
-  (C) Copyright 2021 Hewlett Packard Enterprise Development LP<BR>
+  (C) Copyright 2021-2022 Hewlett Packard Enterprise Development LP<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -323,7 +323,7 @@ RedfishGetByUri (
 
   ZeroMem (RedResponse, sizeof (REDFISH_RESPONSE));
 
-  JsonValue = getUriFromService (RedfishService, Uri, &RedResponse->StatusCode);
+  JsonValue = getUriFromServiceEx (RedfishService, Uri, &RedResponse->Headers, &RedResponse->HeaderCount, &RedResponse->StatusCode);
   RedResponse->Payload = createRedfishPayload(JsonValue, RedfishService);
 
   //
@@ -541,9 +541,11 @@ RedfishPatchToPayload (
 
   ZeroMem (RedResponse, sizeof (REDFISH_RESPONSE));
 
-  RedResponse->Payload = (REDFISH_PAYLOAD) patchPayload (
+  RedResponse->Payload = (REDFISH_PAYLOAD) patchPayloadEx (
                                              Target,
                                              Payload,
+                                             &RedResponse->Headers,
+                                             &RedResponse->HeaderCount,
                                              &(RedResponse->StatusCode)
                                              );
 
@@ -607,9 +609,11 @@ RedfishPostToPayload (
 
   ZeroMem (RedResponse, sizeof (REDFISH_RESPONSE));
 
-  RedResponse->Payload = (REDFISH_PAYLOAD) postPayload (
+  RedResponse->Payload = (REDFISH_PAYLOAD) postPayloadEx (
                                              Target,
                                              Payload,
+                                             &RedResponse->Headers,
+                                             &RedResponse->HeaderCount,
                                              &(RedResponse->StatusCode)
                                              );
 
diff --git a/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/include/redfishPayload.h b/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/include/redfishPayload.h
index 43149f3c89..be74c64297 100644
--- a/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/include/redfishPayload.h
+++ b/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/include/redfishPayload.h
@@ -9,7 +9,7 @@
 //----------------------------------------------------------------------------
 
   Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
-  (C) Copyright 2021 Hewlett Packard Enterprise Development LP<BR>
+  (C) Copyright 2021-2022 Hewlett Packard Enterprise Development LP<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -29,8 +29,11 @@ redfishPayload* getPayloadByIndex(redfishPayload* payload, size_t index, EFI_HTT
 redfishPayload* getPayloadForPath(redfishPayload* payload, redPathNode* redpath, EFI_HTTP_STATUS_CODE** StatusCode);
 redfishPayload* getPayloadForPathString(redfishPayload* payload, const char* string, EFI_HTTP_STATUS_CODE** StatusCode);
 redfishPayload* patchPayload(redfishPayload* target, redfishPayload* payload, EFI_HTTP_STATUS_CODE** StatusCode);
+redfishPayload* patchPayloadEx(redfishPayload* target, redfishPayload* payload, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE** StatusCode);
 redfishPayload* postContentToPayload(redfishPayload* target, const char* data, size_t dataSize, const char* contentType, EFI_HTTP_STATUS_CODE** StatusCode);
+redfishPayload* postContentToPayloadEx(redfishPayload* target, const char* data, size_t dataSize, const char* contentType, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE** StatusCode);
 redfishPayload* postPayload(redfishPayload* target, redfishPayload* payload, EFI_HTTP_STATUS_CODE** StatusCode);
+redfishPayload* postPayloadEx(redfishPayload* target, redfishPayload* payload, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE** StatusCode);
 void            cleanupPayload(redfishPayload* payload);
 bool            isPayloadCollection (redfishPayload *Payload);
 size_t          getCollectionSize(redfishPayload* payload);
diff --git a/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/include/redfishService.h b/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/include/redfishService.h
index 0215caccfc..3d87fad85a 100644
--- a/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/include/redfishService.h
+++ b/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/include/redfishService.h
@@ -9,7 +9,7 @@
 //----------------------------------------------------------------------------
 
   Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
-  (C) Copyright 2021 Hewlett Packard Enterprise Development LP<BR>
+  (C) Copyright 2021-2022 Hewlett Packard Enterprise Development LP<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -91,8 +91,11 @@ typedef struct {
 #define REDFISH_FLAG_SERVICE_NO_VERSION_DOC 0x00000001 //The Redfish Service lacks the version document (in violation of the Redfish spec)
 redfishService* createServiceEnumerator(REDFISH_CONFIG_SERVICE_INFORMATION *RedfishConfigServiceInfo, const char* rootUri, enumeratorAuthentication* auth, unsigned int flags);
 json_t* getUriFromService(redfishService* service, const char* uri, EFI_HTTP_STATUS_CODE** StatusCode);
+json_t* getUriFromServiceEx(redfishService* service, const char* uri, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE **StatusCode);
 json_t* patchUriFromService(redfishService* service, const char* uri, const char* content, EFI_HTTP_STATUS_CODE** StatusCode);
+json_t* patchUriFromServiceEx(redfishService* service, const char* uri, const char* content, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE** StatusCode);
 json_t* postUriFromService(redfishService* service, const char* uri, const char* content, size_t contentLength, const char* contentType, EFI_HTTP_STATUS_CODE** StatusCode);
+json_t* postUriFromServiceEx(redfishService* service, const char* uri, const char* content, size_t contentLength, const char* contentType, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE** StatusCode);
 json_t* deleteUriFromService(redfishService* service, const char* uri, EFI_HTTP_STATUS_CODE** StatusCode);
 redfishPayload* getRedfishServiceRoot(redfishService* service, const char* version, EFI_HTTP_STATUS_CODE** StatusCode);
 redfishPayload* getPayloadByPath(redfishService* service, const char* path, EFI_HTTP_STATUS_CODE** StatusCode);
diff --git a/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/src/payload.c b/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/src/payload.c
index bd8d143c4e..8b49bec0df 100644
--- a/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/src/payload.c
+++ b/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/src/payload.c
@@ -9,7 +9,7 @@
 //----------------------------------------------------------------------------
 
   Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
-  (C) Copyright 2021 Hewlett Packard Enterprise Development LP<BR>
+  (C) Copyright 2021-2022 Hewlett Packard Enterprise Development LP<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -326,6 +326,40 @@ redfishPayload* getPayloadForPathString(redfishPayload* payload, const char* str
     return ret;
 }
 
+redfishPayload* patchPayloadEx(redfishPayload* target, redfishPayload* payload, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE** StatusCode)
+{
+  json_t* json;
+  char* content;
+  char* uri;
+
+  if(!target || !payload || StatusCode == NULL)
+  {
+    return NULL;
+  }
+
+  *StatusCode = NULL;
+
+  json = json_object_get(target->json, "@odata.id");
+  if(json == NULL)
+  {
+    return NULL;
+  }
+  uri = strdup(json_string_value(json));
+
+  content = json_dumps(payload->json, 0);
+  json_decref(json);
+
+  json = patchUriFromServiceEx(target->service, uri, content, Headers, HeaderCount, StatusCode);
+  free(uri);
+  free(content);
+  if(json == NULL)
+  {
+    return NULL;
+  }
+
+  return createRedfishPayload(json, target->service);
+}
+
 redfishPayload* patchPayload(redfishPayload* target, redfishPayload* payload, EFI_HTTP_STATUS_CODE** StatusCode)
 {
   json_t* json;
@@ -360,6 +394,38 @@ redfishPayload* patchPayload(redfishPayload* target, redfishPayload* payload, EF
   return createRedfishPayload(json, target->service);
 }
 
+redfishPayload* postContentToPayloadEx(redfishPayload* target, const char* data, size_t dataSize, const char* contentType, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE** StatusCode)
+{
+    json_t* json;
+    char* uri;
+
+    if(!target || !data || StatusCode == NULL)
+    {
+        return NULL;
+    }
+
+    *StatusCode = NULL;
+
+    json = json_object_get(target->json, "@odata.id");
+    if(json == NULL)
+    {
+        json = json_object_get(target->json, "target");
+        if(json == NULL)
+        {
+            return NULL;
+        }
+    }
+    uri = strdup(json_string_value(json));
+    json = postUriFromServiceEx(target->service, uri, data, dataSize, contentType, Headers, HeaderCount, StatusCode);
+    free(uri);
+    if(json == NULL)
+    {
+        return NULL;
+    }
+
+    return createRedfishPayload(json, target->service);
+}
+
 redfishPayload* postContentToPayload(redfishPayload* target, const char* data, size_t dataSize, const char* contentType, EFI_HTTP_STATUS_CODE** StatusCode)
 {
     json_t* json;
@@ -392,6 +458,28 @@ redfishPayload* postContentToPayload(redfishPayload* target, const char* data, s
     return createRedfishPayload(json, target->service);
 }
 
+redfishPayload* postPayloadEx(redfishPayload* target, redfishPayload* payload, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE** StatusCode)
+{
+    char* content;
+    redfishPayload* ret;
+
+    if(!target || !payload || StatusCode == NULL)
+    {
+        return NULL;
+    }
+
+    *StatusCode = NULL;
+
+    if(!json_is_object(payload->json))
+    {
+        return NULL;
+    }
+    content = payloadToString(payload, false);
+    ret = postContentToPayloadEx(target, content, strlen(content), NULL, Headers, HeaderCount, StatusCode);
+    free(content);
+    return ret;
+}
+
 redfishPayload* postPayload(redfishPayload* target, redfishPayload* payload, EFI_HTTP_STATUS_CODE** StatusCode)
 {
     char* content;
diff --git a/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/src/service.c b/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/src/service.c
index 7713f89e6d..450fa78bbd 100644
--- a/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/src/service.c
+++ b/RedfishClientPkg/PrivateLibrary/RedfishLib/edk2libredfish/src/service.c
@@ -9,7 +9,7 @@
 //----------------------------------------------------------------------------
 
   Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
-  (C) Copyright 2021 Hewlett Packard Enterprise Development LP<BR>
+  (C) Copyright 2021-2022 Hewlett Packard Enterprise Development LP<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -338,6 +338,190 @@ ON_EXIT:
   return ret;
 }
 
+EFI_HTTP_HEADER *cloneHttpHeaders(EFI_HTTP_MESSAGE *message, UINTN *HeaderCount)
+{
+  EFI_HTTP_HEADER *Buffer;
+  UINTN           Index;
+
+  if (message == NULL || HeaderCount == NULL) {
+    return NULL;
+  }
+
+  *HeaderCount = message->HeaderCount;
+  Buffer = AllocatePool (sizeof (EFI_HTTP_HEADER) *  message->HeaderCount);
+  if (Buffer == NULL) {
+    return NULL;
+  }
+
+  for (Index = 0; Index < message->HeaderCount; Index++) {
+    Buffer[Index].FieldName = AllocateCopyPool (AsciiStrSize (message->Headers[Index].FieldName), message->Headers[Index].FieldName);
+    ASSERT (Buffer[Index].FieldName != NULL);
+    Buffer[Index].FieldValue = AllocateCopyPool (AsciiStrSize (message->Headers[Index].FieldValue), message->Headers[Index].FieldValue);
+    ASSERT (Buffer[Index].FieldValue != NULL);
+  }
+
+  return Buffer;
+}
+
+json_t* getUriFromServiceEx(redfishService* service, const char* uri, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE **StatusCode)
+{
+  char* url;
+  json_t* ret;
+  HTTP_IO_HEADER                    *HttpIoHeader = NULL;
+  EFI_STATUS                        Status;
+  EFI_HTTP_REQUEST_DATA             *RequestData = NULL;
+  EFI_HTTP_MESSAGE                  *RequestMsg = NULL;
+  EFI_HTTP_MESSAGE                  ResponseMsg;
+  EFI_HTTP_HEADER                   *ContentEncodedHeader;
+
+  if(service == NULL || uri == NULL || Headers == NULL || HeaderCount == NULL ||StatusCode == NULL)
+  {
+      return NULL;
+  }
+
+  *StatusCode = NULL;
+  *HeaderCount = 0;
+  *Headers = NULL;
+
+  url = makeUrlForService(service, uri);
+  if(!url)
+  {
+      return NULL;
+  }
+
+  DEBUG((DEBUG_INFO, "libredfish: getUriFromServiceEx(): %a\n", url));
+
+  //
+  // Step 1: Create HTTP request message with 4 headers:
+  //
+  HttpIoHeader = HttpIoCreateHeader ((service->sessionToken || service->basicAuthStr) ? 6 : 5);
+  if (HttpIoHeader == NULL) {
+    ret = NULL;
+    goto ON_EXIT;
+  }
+
+  if(service->sessionToken)
+  {
+    Status = HttpIoSetHeader (HttpIoHeader, "X-Auth-Token", service->sessionToken);
+    ASSERT_EFI_ERROR (Status);
+  } else if (service->basicAuthStr) {
+    Status = HttpIoSetHeader (HttpIoHeader, "Authorization", service->basicAuthStr);
+    ASSERT_EFI_ERROR (Status);
+  }
+
+  Status = HttpIoSetHeader (HttpIoHeader, "Host", service->HostHeaderValue);
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "OData-Version", "4.0");
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "Accept", "application/json");
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "User-Agent", "libredfish");
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "Connection", "Keep-Alive");
+  ASSERT_EFI_ERROR (Status);
+
+  //
+  // Step 2: build the rest of HTTP request info.
+  //
+  RequestData = AllocateZeroPool (sizeof (EFI_HTTP_REQUEST_DATA));
+  if (RequestData == NULL) {
+    ret = NULL;
+    goto ON_EXIT;
+  }
+
+  RequestData->Method = HttpMethodGet;
+  RequestData->Url = C8ToC16 (url);
+
+  //
+  // Step 3: fill in EFI_HTTP_MESSAGE
+  //
+  RequestMsg = AllocateZeroPool (sizeof (EFI_HTTP_MESSAGE));
+  if (RequestMsg == NULL) {
+    ret = NULL;
+    goto ON_EXIT;
+  }
+
+  RequestMsg->Data.Request = RequestData;
+  RequestMsg->HeaderCount  = HttpIoHeader->HeaderCount;
+  RequestMsg->Headers      = HttpIoHeader->Headers;
+
+  ZeroMem (&ResponseMsg, sizeof (ResponseMsg));
+
+  //
+  // Step 4: call RESTEx to get response from REST service.
+  //
+  Status = service->RestEx->SendReceive (service->RestEx, RequestMsg, &ResponseMsg);
+  if (EFI_ERROR (Status)) {
+    ret = NULL;
+    goto ON_EXIT;
+  }
+
+  //
+  // Step 5: Return the HTTP StatusCode and Body message.
+  //
+  if (ResponseMsg.Data.Response != NULL) {
+    *StatusCode = AllocateZeroPool (sizeof (EFI_HTTP_STATUS_CODE));
+    if (*StatusCode == NULL) {
+      ret = NULL;
+      goto ON_EXIT;
+    }
+
+    //
+    // The caller shall take the responsibility to free the buffer.
+    //
+    **StatusCode = ResponseMsg.Data.Response->StatusCode;
+  }
+
+  if (ResponseMsg.Headers != NULL) {
+    *Headers = cloneHttpHeaders (&ResponseMsg, HeaderCount);
+  }
+
+  if (ResponseMsg.BodyLength != 0 && ResponseMsg.Body != NULL) {
+    //
+    // Check if data is encoded.
+    //
+    ContentEncodedHeader = HttpFindHeader (ResponseMsg.HeaderCount, ResponseMsg.Headers, HTTP_HEADER_CONTENT_ENCODING);
+    if (ContentEncodedHeader != NULL) {
+      //
+      // The content is encoded.
+      //
+      Status = DecodeResponseContent (ContentEncodedHeader->FieldValue, &ResponseMsg.Body, &ResponseMsg.BodyLength);
+      if (EFI_ERROR (Status)) {
+        DEBUG ((DEBUG_ERROR, "%a: Failed to decompress the response content %r\n.", __FUNCTION__, Status));
+        ret = NULL;
+        goto ON_EXIT;
+      }
+    }
+    ret = json_loadb (ResponseMsg.Body, ResponseMsg.BodyLength, 0, NULL);
+  } else {
+    //
+    // There is no message body returned from server.
+    //
+    ret = NULL;
+  }
+
+ON_EXIT:
+  if (url != NULL) {
+    free (url);
+  }
+
+  if (HttpIoHeader != NULL) {
+    HttpIoFreeHeader (HttpIoHeader);
+  }
+
+  if (RequestData != NULL) {
+    RestConfigFreeHttpRequestData (RequestData);
+  }
+
+  if (RequestMsg != NULL) {
+    FreePool (RequestMsg);
+  }
+
+  RestConfigFreeHttpMessage (&ResponseMsg, FALSE);
+
+  return ret;
+}
+
 json_t* getUriFromService(redfishService* service, const char* uri, EFI_HTTP_STATUS_CODE** StatusCode)
 {
   char* url;
@@ -491,7 +675,7 @@ ON_EXIT:
   return ret;
 }
 
-json_t* patchUriFromService(redfishService* service, const char* uri, const char* content, EFI_HTTP_STATUS_CODE** StatusCode)
+json_t* patchUriFromServiceEx(redfishService* service, const char* uri, const char* content, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE** StatusCode)
 {
   char*               url;
   json_t*             ret;
@@ -632,6 +816,10 @@ json_t* patchUriFromService(redfishService* service, const char* uri, const char
     **StatusCode = ResponseMsg.Data.Response->StatusCode;
   }
 
+  if (ResponseMsg.Headers != NULL) {
+    *Headers = cloneHttpHeaders (&ResponseMsg, HeaderCount);
+  }
+
   if (EncodedContent != content) {
     FreePool (EncodedContent);
   }
@@ -668,6 +856,368 @@ ON_EXIT:
   return ret;
 }
 
+json_t* patchUriFromService(redfishService* service, const char* uri, const char* content, EFI_HTTP_STATUS_CODE** StatusCode)
+{
+  char*               url;
+  json_t*             ret;
+  HTTP_IO_HEADER                    *HttpIoHeader = NULL;
+  EFI_STATUS                        Status;
+  EFI_HTTP_REQUEST_DATA             *RequestData = NULL;
+  EFI_HTTP_MESSAGE                  *RequestMsg = NULL;
+  EFI_HTTP_MESSAGE                  ResponseMsg;
+  CHAR8                             ContentLengthStr[80];
+  CHAR8                             *EncodedContent;
+  UINTN                             EncodedContentLen;
+
+  if(service == NULL || uri == NULL || content == NULL || StatusCode == NULL)
+  {
+      return NULL;
+  }
+
+  *StatusCode = NULL;
+
+  url = makeUrlForService(service, uri);
+  if(!url)
+  {
+      return NULL;
+  }
+
+  DEBUG((DEBUG_INFO, "libredfish: patchUriFromService(): %a\n", url));
+
+  //
+  // Step 1: Create HTTP request message with 4 headers:
+  //
+  HttpIoHeader = HttpIoCreateHeader ((service->sessionToken || service->basicAuthStr) ? 9 : 8);
+  if (HttpIoHeader == NULL) {
+    ret = NULL;
+    goto ON_EXIT;
+  }
+
+  if(service->sessionToken)
+  {
+    Status = HttpIoSetHeader (HttpIoHeader, "X-Auth-Token", service->sessionToken);
+    ASSERT_EFI_ERROR (Status);
+  } else if (service->basicAuthStr) {
+    Status = HttpIoSetHeader (HttpIoHeader, "Authorization", service->basicAuthStr);
+    ASSERT_EFI_ERROR (Status);
+  }
+
+  Status = HttpIoSetHeader (HttpIoHeader, "Host", service->HostHeaderValue);
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "Content-Type", "application/json");
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "Accept", "application/json");
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "User-Agent", "libredfish");
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "Connection", "Keep-Alive");
+  ASSERT_EFI_ERROR (Status);
+
+  AsciiSPrint(
+    ContentLengthStr,
+    sizeof (ContentLengthStr),
+    "%lu",
+    (UINT64) strlen(content)
+    );
+  Status = HttpIoSetHeader (HttpIoHeader, "Content-Length", ContentLengthStr);
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "OData-Version", "4.0");
+  ASSERT_EFI_ERROR (Status);
+
+  //
+  // Step 2: build the rest of HTTP request info.
+  //
+  RequestData = AllocateZeroPool (sizeof (EFI_HTTP_REQUEST_DATA));
+  if (RequestData == NULL) {
+    ret = NULL;
+    goto ON_EXIT;
+  }
+
+  RequestData->Method = HttpMethodPatch;
+  RequestData->Url = C8ToC16 (url);
+
+  //
+  // Step 3: fill in EFI_HTTP_MESSAGE
+  //
+  RequestMsg = AllocateZeroPool (sizeof (EFI_HTTP_MESSAGE));
+  if (RequestMsg == NULL) {
+    ret = NULL;
+    goto ON_EXIT;
+  }
+
+  EncodedContent = (CHAR8 *)content;
+  EncodedContentLen = strlen(content);
+  //
+  // We currently only support gzip Content-Encoding.
+  //
+  Status = EncodeRequestContent ((CHAR8 *)HTTP_CONTENT_ENCODING_GZIP, (CHAR8 *)content, (VOID **)&EncodedContent, &EncodedContentLen);
+  if (Status == EFI_INVALID_PARAMETER) {
+    DEBUG((DEBUG_ERROR, "%a: Error to encode content.\n", __FUNCTION__));
+    ret = NULL;
+    goto ON_EXIT;
+  } else if (Status == EFI_UNSUPPORTED) {
+    DEBUG((DEBUG_INFO, "No content coding for %a! Use raw data instead.\n", HTTP_CONTENT_ENCODING_GZIP));
+    Status = HttpIoSetHeader (HttpIoHeader, "Content-Encoding", HTTP_CONTENT_ENCODING_IDENTITY);
+    ASSERT_EFI_ERROR (Status);
+  } else {
+    Status = HttpIoSetHeader (HttpIoHeader, "Content-Encoding", HTTP_CONTENT_ENCODING_GZIP);
+    ASSERT_EFI_ERROR (Status);
+  }
+
+  RequestMsg->Data.Request = RequestData;
+  RequestMsg->HeaderCount  = HttpIoHeader->HeaderCount;
+  RequestMsg->Headers      = HttpIoHeader->Headers;
+  RequestMsg->BodyLength   = EncodedContentLen;
+  RequestMsg->Body         = (VOID*) EncodedContent;
+
+  ZeroMem (&ResponseMsg, sizeof (ResponseMsg));
+
+  //
+  // Step 4: call RESTEx to get response from REST service.
+  //
+  Status = service->RestEx->SendReceive (service->RestEx, RequestMsg, &ResponseMsg);
+  if (EFI_ERROR (Status)) {
+    ret = NULL;
+    goto ON_EXIT;
+  }
+
+  //
+  // Step 5: Return the HTTP StatusCode and Body message.
+  //
+  if (ResponseMsg.Data.Response != NULL) {
+    *StatusCode = AllocateZeroPool (sizeof (EFI_HTTP_STATUS_CODE));
+    if (*StatusCode == NULL) {
+      ret = NULL;
+      goto ON_EXIT;
+    }
+
+    //
+    // The caller shall take the responsibility to free the buffer.
+    //
+    **StatusCode = ResponseMsg.Data.Response->StatusCode;
+  }
+
+  if (EncodedContent != content) {
+    FreePool (EncodedContent);
+  }
+
+
+  if (ResponseMsg.BodyLength != 0 && ResponseMsg.Body != NULL) {
+    ret = json_loadb (ResponseMsg.Body, ResponseMsg.BodyLength, 0, NULL);
+  } else {
+    //
+    // There is no message body returned from server.
+    //
+    ret = NULL;
+  }
+
+ON_EXIT:
+  if (url != NULL) {
+    free (url);
+  }
+
+  if (HttpIoHeader != NULL) {
+    HttpIoFreeHeader (HttpIoHeader);
+  }
+
+  if (RequestData != NULL) {
+    RestConfigFreeHttpRequestData (RequestData);
+  }
+
+  if (RequestMsg != NULL) {
+    FreePool (RequestMsg);
+  }
+
+  RestConfigFreeHttpMessage (&ResponseMsg, FALSE);
+
+  return ret;
+}
+
+json_t* postUriFromServiceEx(redfishService* service, const char* uri, const char* content, size_t contentLength, const char* contentType, EFI_HTTP_HEADER **Headers, UINTN *HeaderCount, EFI_HTTP_STATUS_CODE** StatusCode)
+{
+  char*               url = NULL;
+  json_t*             ret;
+  HTTP_IO_HEADER                    *HttpIoHeader = NULL;
+  EFI_STATUS                        Status;
+  EFI_HTTP_REQUEST_DATA             *RequestData = NULL;
+  EFI_HTTP_MESSAGE                  *RequestMsg = NULL;
+  EFI_HTTP_MESSAGE                  ResponseMsg;
+  CHAR8                             ContentLengthStr[80];
+  EFI_HTTP_HEADER                   *HttpHeader = NULL;
+
+  ret = NULL;
+
+  if(service == NULL || uri == NULL || content == NULL || StatusCode == NULL)
+  {
+      return NULL;
+  }
+
+  *StatusCode = NULL;
+
+  url = makeUrlForService(service, uri);
+  if(!url)
+  {
+      return NULL;
+  }
+
+  DEBUG((DEBUG_INFO, "libredfish: postUriFromService(): %a\n", url));
+
+  if(contentLength == 0)
+  {
+      contentLength = strlen(content);
+  }
+
+  //
+  // Step 1: Create HTTP request message with 4 headers:
+  //
+  HttpIoHeader = HttpIoCreateHeader ((service->sessionToken || service->basicAuthStr) ? 8 : 7);
+  if (HttpIoHeader == NULL) {
+    goto ON_EXIT;
+  }
+
+  if(service->sessionToken)
+  {
+    Status = HttpIoSetHeader (HttpIoHeader, "X-Auth-Token", service->sessionToken);
+    ASSERT_EFI_ERROR (Status);
+  } else if (service->basicAuthStr) {
+    Status = HttpIoSetHeader (HttpIoHeader, "Authorization", service->basicAuthStr);
+    ASSERT_EFI_ERROR (Status);
+  }
+
+  if(contentType == NULL) {
+    Status = HttpIoSetHeader (HttpIoHeader, "Content-Type", "application/json");
+    ASSERT_EFI_ERROR (Status);
+  } else {
+    Status = HttpIoSetHeader (HttpIoHeader, "Content-Type", (CHAR8 *) contentType);
+    ASSERT_EFI_ERROR (Status);
+  }
+  Status = HttpIoSetHeader (HttpIoHeader, "Host", service->HostHeaderValue);
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "Accept", "application/json");
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "User-Agent", "libredfish");
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "Connection", "Keep-Alive");
+  ASSERT_EFI_ERROR (Status);
+  AsciiSPrint(
+    ContentLengthStr,
+    sizeof (ContentLengthStr),
+    "%lu",
+    (UINT64) contentLength
+    );
+  Status = HttpIoSetHeader (HttpIoHeader, "Content-Length", ContentLengthStr);
+  ASSERT_EFI_ERROR (Status);
+  Status = HttpIoSetHeader (HttpIoHeader, "OData-Version", "4.0");
+  ASSERT_EFI_ERROR (Status);
+
+  //
+  // Step 2: build the rest of HTTP request info.
+  //
+  RequestData = AllocateZeroPool (sizeof (EFI_HTTP_REQUEST_DATA));
+  if (RequestData == NULL) {
+    goto ON_EXIT;
+  }
+
+  RequestData->Method = HttpMethodPost;
+  RequestData->Url = C8ToC16 (url);
+
+  //
+  // Step 3: fill in EFI_HTTP_MESSAGE
+  //
+  RequestMsg = AllocateZeroPool (sizeof (EFI_HTTP_MESSAGE));
+  if (RequestMsg == NULL) {
+    goto ON_EXIT;
+  }
+
+  RequestMsg->Data.Request = RequestData;
+  RequestMsg->HeaderCount  = HttpIoHeader->HeaderCount;
+  RequestMsg->Headers      = HttpIoHeader->Headers;
+  RequestMsg->BodyLength   = contentLength;
+  RequestMsg->Body         = (VOID*) content;
+
+  ZeroMem (&ResponseMsg, sizeof (ResponseMsg));
+
+  //
+  // Step 4: call RESTEx to get response from REST service.
+  //
+  Status = service->RestEx->SendReceive (service->RestEx, RequestMsg, &ResponseMsg);
+  if (EFI_ERROR (Status)) {
+    goto ON_EXIT;
+  }
+
+  //
+  // Step 5: Return the HTTP StatusCode and Body message.
+  //
+  if (ResponseMsg.Data.Response != NULL) {
+    *StatusCode = AllocateZeroPool (sizeof (EFI_HTTP_STATUS_CODE));
+    if (*StatusCode == NULL) {
+      goto ON_EXIT;
+    }
+
+    //
+    // The caller shall take the responsibility to free the buffer.
+    //
+    **StatusCode = ResponseMsg.Data.Response->StatusCode;
+  }
+
+  if (ResponseMsg.Headers != NULL) {
+    *Headers = cloneHttpHeaders (&ResponseMsg, HeaderCount);
+  }
+
+  if (ResponseMsg.BodyLength != 0 && ResponseMsg.Body != NULL) {
+    ret = json_loadb (ResponseMsg.Body, ResponseMsg.BodyLength, 0, NULL);
+  }
+
+  //
+  // Step 6: Parsing the HttpHeader to retrive the X-Auth-Token if the HTTP StatusCode is correct.
+  //
+  if (ResponseMsg.Data.Response->StatusCode == HTTP_STATUS_200_OK ||
+      ResponseMsg.Data.Response->StatusCode == HTTP_STATUS_204_NO_CONTENT) {
+    HttpHeader = HttpFindHeader (ResponseMsg.HeaderCount, ResponseMsg.Headers, "X-Auth-Token");
+    if (HttpHeader != NULL) {
+      if(service->sessionToken)
+      {
+          free(service->sessionToken);
+      }
+      service->sessionToken = AllocateCopyPool (AsciiStrSize (HttpHeader->FieldValue), HttpHeader->FieldValue);
+    }
+
+    /*
+    //
+    // Below opeation seems to be unnecessary.
+    // Besides, the FieldValue for the Location is the full HTTP URI (Http://0.0.0.0:5000/XXX), so we can't use it as the
+    // parameter of getUriFromService () directly.
+    //
+    HttpHeader = HttpFindHeader (ResponseMsg.HeaderCount, ResponseMsg.Headers, "Location");
+    if (HttpHeader != NULL) {
+      ret = getUriFromService(service, HttpHeader->FieldValue);
+      goto ON_EXIT;
+    }
+    */
+  }
+
+ON_EXIT:
+  if (url != NULL) {
+    free (url);
+  }
+
+  if (HttpIoHeader != NULL) {
+    HttpIoFreeHeader (HttpIoHeader);
+  }
+
+  if (RequestData != NULL) {
+    RestConfigFreeHttpRequestData (RequestData);
+  }
+
+  if (RequestMsg != NULL) {
+    FreePool (RequestMsg);
+  }
+
+  RestConfigFreeHttpMessage (&ResponseMsg, FALSE);
+
+  return ret;
+}
+
 json_t* postUriFromService(redfishService* service, const char* uri, const char* content, size_t contentLength, const char* contentType, EFI_HTTP_STATUS_CODE** StatusCode)
 {
   char*               url = NULL;
-- 
2.32.0.windows.2