* [PATCH v2 2/3] RedfishPkg/library: EDK2 port of jansson library
2020-12-01 2:25 [PATCH v2 0/3] jansson edk2 port Abner Chang
2020-12-01 2:25 ` [PATCH v2 1/3] edk2: jansson submodule for edk2 JSON library Abner Chang
@ 2020-12-01 2:25 ` Abner Chang
2020-12-01 2:25 ` [PATCH v2 3/3] RedfishPkg: Add EDK2 port of jansson library to build Abner Chang
2020-12-01 8:14 ` [PATCH v2 0/3] jansson edk2 port Laszlo Ersek
3 siblings, 0 replies; 5+ messages in thread
From: Abner Chang @ 2020-12-01 2:25 UTC (permalink / raw)
To: devel
Cc: Andrew Fish, Laszlo Ersek, Leif Lindholm, Michael D Kinney,
Nickle Wang, Peter O'Hanley
edk2 JsonLib which is the edk2 port of open source
jansson library.
(https://github.com/akheron/jansson)
Signed-off-by: Abner Chang <abner.chang@hpe.com>
Cc: Andrew Fish <afish@apple.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Nickle Wang <nickle.wang@hpe.com>
Cc: Peter O'Hanley <peter.ohanley@hpe.com>
---
.../Include/Library/JanssonJsonLibMapping.h | 63 +
RedfishPkg/Include/Library/JsonLib.h | 767 ++++++++++++
.../Library/JsonLib/JanssonCrtLibSupport.c | 705 +++++++++++
.../Library/JsonLib/JanssonCrtLibSupport.h | 198 +++
RedfishPkg/Library/JsonLib/JsonLib.c | 960 ++++++++++++++
RedfishPkg/Library/JsonLib/JsonLib.inf | 103 ++
RedfishPkg/Library/JsonLib/JsonUtilities.c | 417 +++++++
RedfishPkg/Library/JsonLib/JsonUtilities.h | 69 +
RedfishPkg/Library/JsonLib/Readme.txt | 40 +
RedfishPkg/Library/JsonLib/assert.h | 16 +
RedfishPkg/Library/JsonLib/errno.h | 16 +
RedfishPkg/Library/JsonLib/jansson_config.h | 60 +
.../Library/JsonLib/jansson_private_config.h | 19 +
RedfishPkg/Library/JsonLib/limits.h | 16 +
RedfishPkg/Library/JsonLib/load.c | 1111 +++++++++++++++++
RedfishPkg/Library/JsonLib/math.h | 16 +
RedfishPkg/Library/JsonLib/stdarg.h | 15 +
RedfishPkg/Library/JsonLib/stddef.h | 16 +
RedfishPkg/Library/JsonLib/stdio.h | 15 +
RedfishPkg/Library/JsonLib/stdlib.h | 16 +
RedfishPkg/Library/JsonLib/string.h | 16 +
RedfishPkg/Library/JsonLib/sys/time.h | 15 +
RedfishPkg/Library/JsonLib/sys/types.h | 15 +
RedfishPkg/Library/JsonLib/time.h | 15 +
RedfishPkg/RedfishPkg.ci.yaml | 33 +-
25 files changed, 4731 insertions(+), 1 deletion(-)
create mode 100644 RedfishPkg/Include/Library/JanssonJsonLibMapping.h
create mode 100644 RedfishPkg/Include/Library/JsonLib.h
create mode 100644 RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.c
create mode 100644 RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.h
create mode 100644 RedfishPkg/Library/JsonLib/JsonLib.c
create mode 100644 RedfishPkg/Library/JsonLib/JsonLib.inf
create mode 100644 RedfishPkg/Library/JsonLib/JsonUtilities.c
create mode 100644 RedfishPkg/Library/JsonLib/JsonUtilities.h
create mode 100644 RedfishPkg/Library/JsonLib/Readme.txt
create mode 100644 RedfishPkg/Library/JsonLib/assert.h
create mode 100644 RedfishPkg/Library/JsonLib/errno.h
create mode 100644 RedfishPkg/Library/JsonLib/jansson_config.h
create mode 100644 RedfishPkg/Library/JsonLib/jansson_private_config.h
create mode 100644 RedfishPkg/Library/JsonLib/limits.h
create mode 100644 RedfishPkg/Library/JsonLib/load.c
create mode 100644 RedfishPkg/Library/JsonLib/math.h
create mode 100644 RedfishPkg/Library/JsonLib/stdarg.h
create mode 100644 RedfishPkg/Library/JsonLib/stddef.h
create mode 100644 RedfishPkg/Library/JsonLib/stdio.h
create mode 100644 RedfishPkg/Library/JsonLib/stdlib.h
create mode 100644 RedfishPkg/Library/JsonLib/string.h
create mode 100644 RedfishPkg/Library/JsonLib/sys/time.h
create mode 100644 RedfishPkg/Library/JsonLib/sys/types.h
create mode 100644 RedfishPkg/Library/JsonLib/time.h
diff --git a/RedfishPkg/Include/Library/JanssonJsonLibMapping.h b/RedfishPkg/Include/Library/JanssonJsonLibMapping.h
new file mode 100644
index 0000000000..80452d6663
--- /dev/null
+++ b/RedfishPkg/Include/Library/JanssonJsonLibMapping.h
@@ -0,0 +1,63 @@
+/** @file
+ This is the wrapper to map funcitons and definitions used in
+ native jannson applications to edk2 JsonLib. This avoids the
+ modifications on native jannson applications to be built under
+ edk2 environment.
+
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef LIBREDFISH_JSON_SUPPORT_H_
+#define LIBREDFISH_JSON_SUPPORT_H_
+
+#include <Library/JsonLib.h>
+
+typedef EDKII_JSON_VALUE json_t;
+typedef EDKII_JSON_INT_T json_int_t;
+typedef EDKII_JSON_TYPE json_type;
+
+///
+/// JSON type mapping
+///
+#define JSON_OBJECT EdkiiJsonTypeObject
+#define JSON_ARRAY EdkiiJsonTypeArray
+#define JSON_STRING EdkiiJsonTypeString
+#define JSON_INTEGER EdkiiJsonTypeInteger
+#define JSON_REAL EdkiiJsonTypeReal
+#define JSON_TRUE EdkiiJsonTypeTrue
+#define JSON_FALSE EdkiiJsonTypeFalse
+#define JSON_NULL EdkiiJsonTypeNull
+
+#define JSON_INDENT(n) EDKII_JSON_INDENT(n)
+
+///
+/// JSON function mapping
+///
+#define json_object_get(JsonObj,key) JsonObjectGetValue(JsonObj,key)
+#define json_is_object(JsonValue) JsonValueIsObject(JsonValue)
+#define json_is_array(JsonValue) JsonValueIsArray(JsonValue)
+#define json_is_string(JsonValue) JsonValueIsString(JsonValue)
+#define json_integer(JsonValue) JsonValueInitNumber(JsonValue)
+#define json_object_set(JsonObj,Key,JsonValue) JsonObjectSetValue(JsonObj,Key,JsonValue)
+#define json_object() JsonValueInitObject()
+#define json_object_size(JsonObject) JsonObjectSize(JsonObject)
+#define json_array_get(JsonArray,Index) JsonArrayGetValue(JsonArray,Index)
+#define json_array_append(JsonArray,JsonValue) JsonArrayAppendValue(JsonArray,JsonValue)
+#define json_dumps(JsonValue,Flags) JsonDumpString(JsonValue,Flags)
+#define json_string_value(JsonValue) JsonValueGetString(JsonValue)
+#define json_array_size(JsonArray) JsonArrayCount(JsonArray)
+#define json_array() JsonValueInitArray()
+#define json_loadb(Buffer,BufferLen,Flags,Error) JsonLoadBuffer(Buffer,BufferLen,Flags,Error)
+#define json_decref(JsonValue) JsonDecreaseReference(JsonValue)
+#define json_incref(JsonValue) JsonIncreaseReference(JsonValue)
+#define json_string(AsciiString) JsonValueInitAsciiString(AsciiString)
+#define json_object_iter(JsonValue) JsonObjectIterator(JsonValue)
+#define json_object_iter_value(Iterator) JsonObjectIteratorValue(Iterator)
+#define json_object_iter_next(JsonValue,Iterator) JsonObjectIteratorNext(JsonValue,Iterator)
+#define json_integer_value(JsonValue) JsonValueGetNumber(JsonValue)
+#define json_get_type(JsonValue) JsonGetType(JsonValue)
+
+#endif
diff --git a/RedfishPkg/Include/Library/JsonLib.h b/RedfishPkg/Include/Library/JsonLib.h
new file mode 100644
index 0000000000..adadcbf33f
--- /dev/null
+++ b/RedfishPkg/Include/Library/JsonLib.h
@@ -0,0 +1,767 @@
+/** @file
+ APIs for JSON operations.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef JSON_LIB_H_
+#define JSON_LIB_H_
+
+#include <Uefi.h>
+
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+typedef VOID* EDKII_JSON_VALUE;
+typedef VOID* EDKII_JSON_ARRAY;
+typedef VOID* EDKII_JSON_OBJECT;
+
+///
+/// Map to json_int_t in jansson.h
+///
+typedef long long EDKII_JSON_INT_T; // #JSON_INTEGER_IS_LONG_LONG is set to 1
+ // in jansson_Config.h
+
+///
+/// Map to the definitions in jansson.h
+///
+#define EDKII_JSON_MAX_INDENT 0x1f
+#define EDKII_JSON_INDENT(n) ((n)&EDKII_JSON_MAX_INDENT)
+#define EDKII_JSON_COMPACT 0x20
+#define EDKII_JSON_ENSURE_ASCII 0x40
+#define EDKII_JSON_SORT_KEYS 0x80
+#define EDKII_JSON_PRESERVE_ORDER 0x100
+#define EDKII_JSON_ENCODE_ANY 0x200
+#define EDKII_JSON_ESCAPE_SLASH 0x400
+#define EDKII_JSON_REAL_PRECISION(n) (((n)&0x1F) << 11)
+#define EDKII_JSON_EMBED 0x10000
+
+#define EDKII_JSON_ARRAY_FOREACH(Array, Index, Value) \
+ for(Index = 0; \
+ Index < JsonArrayCount(Array) && (Value = JsonArrayGetValue(Array, Index)); \
+ Index++)
+
+///
+/// Map to the json_error_t in jansson.h
+///
+#define EDKII_JSON_ERROR_TEXT_LENGTH 160
+#define EDKII_JSON_ERROR_SOURCE_LENGTH 80
+typedef struct {
+ INTN Line;
+ INTN Column;
+ INTN Position;
+ CHAR8 Source [EDKII_JSON_ERROR_SOURCE_LENGTH];
+ CHAR8 Text [EDKII_JSON_ERROR_TEXT_LENGTH];
+} EDKII_JSON_ERROR;
+
+///
+/// Map to the json_type in jansson.h
+///
+typedef enum {
+ EdkiiJsonTypeObject,
+ EdkiiJsonTypeArray,
+ EdkiiJsonTypeString,
+ EdkiiJsonTypeInteger,
+ EdkiiJsonTypeReal,
+ EdkiiJsonTypeTrue,
+ EdkiiJsonTypeFalse,
+ EdkiiJsonTypeNull
+} EDKII_JSON_TYPE;
+
+/**
+ The function is used to convert a NULL terminated UTF8 encoded string to a JSON
+ value. Only object and array represented strings can be converted successfully,
+ since they are the only valid root values of a JSON text for UEFI usage.
+
+ Real number and number with exponent part are not supportted by UEFI.
+
+ Caller needs to cleanup the root value by calling JsonValueFree().
+
+ @param[in] Text The NULL terminated UTF8 encoded string to convert
+
+ @retval Array JSON value or object JSON value, or NULL when any error occurs.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+TextToJson (
+ IN CHAR8* Text
+ );
+
+/**
+ The function is used to convert the JSON root value to a UTF8 encoded string which
+ is terminated by NULL, or return NULL on error.
+
+ Only array JSON value or object JSON value is valid for converting, and caller is
+ responsible for free converted string.
+
+ @param[in] Json The JSON value to be converted
+
+ @retval The JSON value converted UTF8 string or NULL.
+
+**/
+CHAR8*
+EFIAPI
+JsonToText (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON array,
+ or NULL on error. Initially, the array is empty.
+
+ The reference count of this value will be set to 1, and caller needs to cleanup the
+ value by calling JsonValueFree().
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @retval The created JSON value which contains a JSON array or NULL.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitArray (
+ VOID
+ );
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON object,
+ or NULL on error. Initially, the object is empty.
+
+ The reference count of this value will be set to 1, and caller needs to cleanup the
+ value by calling JsonValueFree().
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @retval The created JSON value which contains a JSON object or NULL.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitObject (
+ VOID
+ );
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON string,
+ or NULL on error.
+
+ The input string must be NULL terminated Ascii format, non-Ascii characters will
+ be processed as an error. Unicode characters can also be represented by Ascii string
+ as the format: \u + 4 hexadecimal digits, like \u3E5A, or \u003F.
+
+ The reference count of this value will be set to 1, and caller needs to cleanup the
+ value by calling JsonValueFree().
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] String The Ascii string to initialize to JSON value
+
+ @retval The created JSON value which contains a JSON string or NULL. Select a
+ Getter API for a specific encoding format.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitAsciiString (
+ IN CONST CHAR8 *String
+ );
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON string,
+ or NULL on error.
+
+ The input must be a NULL terminated UCS2 format Unicode string.
+
+ The reference count of this value will be set to 1, and caller needs to cleanup the
+ value by calling JsonValueFree().
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] String The Unicode string to initialize to JSON value
+
+ @retval The created JSON value which contains a JSON string or NULL. Select a
+ Getter API for a specific encoding format.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitUnicodeString (
+ IN CHAR16 *String
+ );
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON integer,
+ or NULL on error.
+
+ The reference count of this value will be set to 1, and caller needs to cleanup the
+ value by calling JsonValueFree().
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] Value The integer to initialize to JSON value
+
+ @retval The created JSON value which contains a JSON number or NULL.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitNumber (
+ IN INT64 Value
+ );
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON boolean,
+ or NULL on error.
+
+ Boolean JSON value is kept as static value, and no need to do any cleanup work.
+
+ @param[in] Value The boolean value to initialize.
+
+ @retval The created JSON value which contains a JSON boolean or NULL.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitBoolean (
+ IN BOOLEAN Value
+ );
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON NULL,
+ or NULL on error.
+
+ NULL JSON value is kept as static value, and no need to do any cleanup work.
+
+ @retval The created NULL JSON value.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitNull (
+ VOID
+ );
+
+/**
+ The function is used to decrease the reference count of a JSON value by one, and once
+ this reference count drops to zero, the value is destroyed and it can no longer be used.
+ If this destroyed value is object type or array type, reference counts for all containing
+ JSON values will be decreased by 1. Boolean JSON value and NULL JSON value won't be destroyed
+ since they are static values kept in memory.
+
+ Reference Count Strategy: BaseJsonLib uses this strategy to track whether a value is still
+ in use or not. When a value is created, it's reference count is set to 1. If a reference to a
+ value is kept for use, its reference count is incremented, and when the value is no longer
+ needed, the reference count is decremented. When the reference count drops to zero, there are
+ no references left, and the value can be destroyed.
+
+ The given JSON value maybe NULL and not causing any problem. Just output the debug message
+ to inform caller the NULL value is passed in.
+
+ @param[in] Json The JSON value to be freed. json_decref may return without any
+ changes if Json is NULL.
+
+**/
+VOID
+EFIAPI
+JsonValueFree (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to create a fresh copy of a JSON value, and all child values are deep
+ copied in a recursive fashion. It should be called when this JSON value might be modified
+ in later use, but the original still wants to be used in somewhere else.
+
+ Reference counts of the returned root JSON value and all child values will be set to 1, and
+ caller needs to cleanup the root value by calling JsonValueFree().
+
+ * Note: Since this function performs a copy from bottom to up, too many calls may cause some
+ performance issues, user should avoid unnecessary calls to this function unless it is really
+ needed.
+
+ @param[in] Json The JSON value to be cloned.
+
+ @retval Return the cloned JSON value, or NULL on error.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueClone (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to return if the provided JSON value contains a JSON array.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value contains a JSON array.
+ @retval FALSE The JSON value doesn't contain a JSON array.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsArray (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to return if the provided JSON value contains a JSON object.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value contains a JSON object.
+ @retval FALSE The JSON value doesn't contain a JSON object.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsObject (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to return if the provided JSON Value contains a string, Ascii or
+ Unicode format is not differentiated.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value contains a JSON string.
+ @retval FALSE The JSON value doesn't contain a JSON string.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsString (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to return if the provided JSON value contains a JSON number.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value is contains JSON number.
+ @retval FALSE The JSON value doesn't contain a JSON number.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsNumber (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to return if the provided JSON value contains a JSON boolean.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value contains a JSON boolean.
+ @retval FALSE The JSON value doesn't contain a JSON boolean.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsBoolean (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to return if the provided JSON value contains a JSON NULL.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value contains a JSON NULL.
+ @retval FALSE The JSON value doesn't contain a JSON NULL.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsNull (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to retrieve the associated array in an array type JSON value.
+
+ Any changes to the returned array will impact the original JSON value.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated array in JSON value or NULL.
+
+**/
+EDKII_JSON_ARRAY
+EFIAPI
+JsonValueGetArray (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to retrieve the associated object in an object type JSON value.
+
+ Any changes to the returned object will impact the original JSON value.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated object in JSON value or NULL.
+
+**/
+EDKII_JSON_OBJECT
+EFIAPI
+JsonValueGetObject (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to retrieve the associated Ascii string in a string type JSON value.
+
+ Any changes to the returned string will impact the original JSON value.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated Ascii string in JSON value or NULL.
+
+**/
+CHAR8*
+EFIAPI
+JsonValueGetAsciiString (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to retrieve the associated Unicode string in a string type JSON value.
+
+ Caller can do any changes to the returned string without any impact to the original JSON
+ value, and caller needs to free the returned string.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated Unicode string in JSON value or NULL.
+
+**/
+CHAR16*
+EFIAPI
+JsonValueGetUnicodeString (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to retrieve the associated integer in a number type JSON value.
+
+ The input JSON value should not be NULL or contain no JSON number, otherwise it will
+ ASSERT() and return 0.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated number in JSON value.
+
+**/
+INT64
+EFIAPI
+JsonValueGetNumber (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to retrieve the associated boolean in a boolean type JSON value.
+
+ The input JSON value should not be NULL or contain no JSON boolean, otherwise it will
+ ASSERT() and return FALSE.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated value of JSON boolean.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueGetBoolean (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to retrieve the associated string in a string type JSON value.
+
+ Any changes to the returned string will impact the original JSON value.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated Ascii string in JSON value or NULL.
+
+**/
+CONST CHAR8*
+EFIAPI
+JsonValueGetString (
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to get the number of elements in a JSON object, or 0 if it is NULL or
+ not a JSON object.
+
+ @param[in] JsonObject The provided JSON object.
+
+ @retval Return the number of elements in this JSON object or 0.
+
+**/
+UINTN
+EFIAPI
+JsonObjectSize (
+ IN EDKII_JSON_OBJECT JsonObject
+ );
+
+/**
+ The function is used to enumerate all keys in a JSON object.
+
+ Caller should be responsible to free the returned key array refference. But contained keys
+ are read only and must not be modified or freed.
+
+ @param[in] JsonObj The provided JSON object for enumeration.
+ @param[out] KeyCount The count of keys in this JSON object.
+
+ @retval Return an array of the enumerated keys in this JSON object or NULL.
+
+**/
+CHAR8**
+JsonObjectGetKeys (
+ IN EDKII_JSON_OBJECT JsonObj,
+ OUT UINTN *KeyCount
+ );
+
+/**
+ The function is used to get a JSON value corresponding to the input key from a JSON object.
+
+ It only returns a reference to this value and any changes on this value will impact the
+ original JSON object. If that is not expected, please call JsonValueClone() to clone it to
+ use.
+
+ Input key must be a valid NULL terminated UTF8 encoded string. NULL will be returned when
+ Key-Value is not found in this JSON object.
+
+ @param[in] JsonObj The provided JSON object.
+ @param[in] Key The key of the JSON value to be retrieved.
+
+ @retval Return the corresponding JSON value to key, or NULL on error.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonObjectGetValue (
+ IN CONST EDKII_JSON_OBJECT JsonObj,
+ IN CONST CHAR8 *Key
+ );
+
+/**
+ The function is used to set a JSON value corresponding to the input key from a JSON object,
+ and the reference count of this value will be increased by 1.
+
+ Input key must be a valid NULL terminated UTF8 encoded string. If there already is a value for
+ this key, this key will be assigned to the new JSON value. The old JSON value will be removed
+ from this object and thus its' reference count will be decreased by 1.
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] JsonObj The provided JSON object.
+ @param[in] Key The key of the JSON value to be set.
+ @param[in] Json The JSON value to set to this JSON object mapped by key.
+
+ @retval EFI_ABORTED Some error occur and operation aborted.
+ @retval EFI_SUCCESS The JSON value has been set to this JSON object.
+
+**/
+EFI_STATUS
+EFIAPI
+JsonObjectSetValue (
+ IN EDKII_JSON_OBJECT JsonObj,
+ IN CONST CHAR8 *Key,
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to get the number of elements in a JSON array, or 0 if it is NULL or
+ not a JSON array.
+
+ @param[in] JsonArray The provided JSON array.
+
+ @retval Return the number of elements in this JSON array or 0.
+
+**/
+UINTN
+EFIAPI
+JsonArrayCount (
+ IN EDKII_JSON_ARRAY JsonArray
+ );
+
+/**
+ The function is used to return the JSON value in the array at position index. The valid range
+ for this index is from 0 to the return value of JsonArrayCount() minus 1.
+
+ It only returns a reference to this value and any changes on this value will impact the
+ original JSON object. If that is not expected, please call JsonValueClone() to clone it to
+ use.
+
+ If this array is NULL or not a JSON array, or if index is out of range, NULL will be returned.
+
+ @param[in] JsonArray The provided JSON Array.
+
+ @retval Return the JSON value located in the Index position or NULL.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonArrayGetValue (
+ IN EDKII_JSON_ARRAY JsonArray,
+ IN UINTN Index
+ );
+
+/**
+ The function is used to append a JSON value to the end of the JSON array, and grow the size of
+ array by 1. The reference count of this value will be increased by 1.
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] JsonArray The provided JSON object.
+ @param[in] Json The JSON value to append.
+
+ @retval EFI_ABORTED Some error occur and operation aborted.
+ @retval EFI_SUCCESS JSON value has been appended to the end of the JSON array.
+
+**/
+EFI_STATUS
+EFIAPI
+JsonArrayAppendValue (
+ IN EDKII_JSON_ARRAY JsonArray,
+ IN EDKII_JSON_VALUE Json
+ );
+
+/**
+ The function is used to remove a JSON value at position index, shifting the elements after index
+ one position towards the start of the array. The reference count of this value will be decreased
+ by 1.
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] JsonArray The provided JSON array.
+ @param[in] Index The Index position before removement.
+
+ @retval EFI_ABORTED Some error occur and operation aborted.
+ @retval EFI_SUCCESS The JSON array has been removed at position index.
+
+**/
+EFI_STATUS
+EFIAPI
+JsonArrayRemoveValue (
+ IN EDKII_JSON_ARRAY JsonArray,
+ IN UINTN Index
+ );
+
+/**
+ Dump JSON to a buffer
+
+ @param[in] JsonValue The provided JSON array.
+ @param[in] Index The Index position before removement.
+
+ @retval NULL Dump fail if NULL returned, otherwise the buffer
+ contain JSON paylaod in ASCII string.
+**/
+CHAR8 *
+EFIAPI
+JsonDumpString (
+ IN EDKII_JSON_ARRAY JsonValue,
+ IN UINTN Flags
+ );
+
+/**
+ Load JSON from a buffer
+
+ @param[in] Buffer Bufffer to the JSON payload
+ @param[in] BufferLen Length of the buffer
+ @param[in] Flags Flag of loading JSON buffer
+
+ @retval EDKII_JSON_VALUE NULL means fail to load JSON payload.
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonLoadBuffer (
+ IN CONST CHAR8 *Buffer,
+ IN UINTN BufferLen,
+ IN UINTN Flags,
+ IN EDKII_JSON_ERROR *Error
+ );
+
+/**
+ Decrease reference
+
+ @param[in] JsonValue JSON value
+**/
+VOID
+EFIAPI
+JsonDecreaseReference (
+ IN EDKII_JSON_VALUE JsonValue
+ );
+
+/**
+ Increase reference
+
+ @param[in] JsonValue JSON value
+ @retval EDKII_JSON_VALUE of itself
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonIncreaseReference (
+ IN EDKII_JSON_VALUE JsonValue
+ );
+/**
+ Returns an opaque iterator which can be used to iterate over all key-value pairs
+ in object, or NULL if object is empty
+
+ @param[in] JsonValue JSON value
+**/
+VOID *
+EFIAPI
+JsonObjectIterator (
+ IN EDKII_JSON_VALUE JsonValue
+ );
+
+/**
+ Extract the associated value from iterator.
+
+ @param[in] Iterator Iterator pointer
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonObjectIteratorValue (
+ IN VOID *Iterator
+ );
+
+/**
+ Returns an iterator pointing to the next key-value pair in object after iter,
+ or NULL if the whole object has been iterated through.
+
+ @param[in] JsonValue JSON value
+ @param[in] Iterator Iterator pointer
+ @retval Iterator pointer
+**/
+VOID *
+JsonObjectIteratorNext (
+ IN EDKII_JSON_VALUE JsonValue,
+ IN VOID *Iterator
+ );
+
+/**
+ Returns the json type of this json value
+
+ @param[in] JsonValue JSON value
+ @retval JSON type returned
+**/
+EDKII_JSON_TYPE
+EFIAPI
+JsonGetType(
+ IN EDKII_JSON_VALUE JsonValue
+ );
+#endif
diff --git a/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.c b/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.c
new file mode 100644
index 0000000000..907634a05b
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.c
@@ -0,0 +1,705 @@
+/** @file
+ CRT wrapper functions for Jansson system call.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <JanssonCrtLibSupport.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+
+int errno = 0;
+
+/**
+ Determine if a particular character is an alphanumeric character
+ @return Returns 1 if c is an alphanumeric character, otherwise returns 0.
+**/
+int isalnum (int c)
+{
+ //
+ // <alnum> ::= [0-9] | [a-z] | [A-Z]
+ //
+ return ((('0' <= (c)) && ((c) <= '9')) ||
+ (('a' <= (c)) && ((c) <= 'z')) ||
+ (('A' <= (c)) && ((c) <= 'Z')));
+}
+
+/**
+ Determine if a particular character is a digital character
+
+ @return Returns 1 if c is an digital character, otherwise returns 0.
+**/
+int isdchar (int c)
+{
+ //
+ // [0-9] | [e +-.]
+ //
+ return ((('0' <= (c)) && ((c) <= '9')) ||
+ (c == 'e') || (c == 'E') ||
+ (c == '+') || (c == '-') ||
+ (c == '.'));
+}
+
+/**
+ Determine if a particular character is a space character
+
+ @return Returns 1 if c is a space character
+**/
+int isspace (int c)
+{
+ //
+ // <space> ::= [ ]
+ //
+ return ((c) == ' ') || ((c) == '\t') || ((c) == '\r') || ((c) == '\n') || ((c) == '\v') || ((c) == '\f');
+}
+
+/**
+ Allocates memory blocks
+*/
+void *malloc (size_t size)
+{
+ return AllocatePool ((UINTN) size);
+}
+
+/**
+ De-allocates or frees a memory block
+*/
+void free (void *ptr)
+{
+ //
+ // In Standard C, free() handles a null pointer argument transparently. This
+ // is not true of FreePool() below, so protect it.
+ //
+ if (ptr != NULL) {
+ FreePool (ptr);
+ }
+}
+
+/**
+ NetBSD Compatibility Function strdup creates a duplicate copy of a string.
+
+ @return Returns the pointer to duplicated string.
+**/
+char * strdup(const char *str)
+{
+ size_t len;
+ char *copy;
+
+ len = strlen(str) + 1;
+ if ((copy = malloc(len)) == NULL)
+ return (NULL);
+ memcpy(copy, str, len);
+ return (copy);
+}
+
+/** The toupper function converts a lowercase letter to a corresponding
+ uppercase letter.
+
+ @param[in] c The character to be converted.
+
+ @return If the argument is a character for which islower is true and
+ there are one or more corresponding characters, as specified by
+ the current locale, for which isupper is true, the toupper
+ function returns one of the corresponding characters (always the
+ same one for any given locale); otherwise, the argument is
+ returned unchanged.
+**/
+int
+toupper(
+ IN int c
+ )
+{
+ if ( (c >= 'a') && (c <= 'z') ) {
+ c = c - ('a' - 'A');
+ }
+ return c;
+}
+
+/**
+ Digit to a value.
+
+ @return Returns the value of digit.
+**/
+int
+Digit2Val( int c)
+{
+ if (((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z'))) { /* If c is one of [A-Za-z]... */
+ c = toupper(c) - 7; // Adjust so 'A' is ('9' + 1)
+ }
+ return c - '0'; // Value returned is between 0 and 35, inclusive.
+}
+
+
+/** The strtoll function converts the initial portion of the string pointed to
+ by nptr to long long int representation.
+
+ See the description for strtol for more information.
+
+ @return The strtoll function returns the converted value, if any. If no
+ conversion could be performed, zero is returned. If the correct
+ value is outside the range of representable values, LLONG_MIN or
+ LLONG_MAX is returned (according to the sign of the value, if any),
+ and the value of the macro ERANGE is stored in errno.
+**/
+long long
+strtoll(const char * nptr, char ** endptr, int base)
+{
+ const char *pEnd;
+ long long Result = 0;
+ long long Previous;
+ int temp;
+ BOOLEAN Negative = FALSE;
+
+ pEnd = nptr;
+
+ if((base < 0) || (base == 1) || (base > 36)) {
+ if(endptr != NULL) {
+ *endptr = NULL;
+ }
+ return 0;
+ }
+ // Skip leading spaces.
+ while(isspace(*nptr)) ++nptr;
+
+ // Process Subject sequence: optional sign followed by digits.
+ if(*nptr == '+') {
+ Negative = FALSE;
+ ++nptr;
+ }
+ else if(*nptr == '-') {
+ Negative = TRUE;
+ ++nptr;
+ }
+
+ if(*nptr == '0') { /* Might be Octal or Hex */
+ if(toupper(nptr[1]) == 'X') { /* Looks like Hex */
+ if((base == 0) || (base == 16)) {
+ nptr += 2; /* Skip the "0X" */
+ base = 16; /* In case base was 0 */
+ }
+ }
+ else { /* Looks like Octal */
+ if((base == 0) || (base == 8)) {
+ ++nptr; /* Skip the leading "0" */
+ base = 8; /* In case base was 0 */
+ }
+ }
+ }
+ if(base == 0) { /* If still zero then must be decimal */
+ base = 10;
+ }
+ if(*nptr == '0') {
+ for( ; *nptr == '0'; ++nptr); /* Skip any remaining leading zeros */
+ pEnd = nptr;
+ }
+
+ while( isalnum(*nptr) && ((temp = Digit2Val(*nptr)) < base)) {
+ Previous = Result;
+ Result = MultS64x64 (Result, base) + (long long int)temp;
+ if( Result <= Previous) { // Detect Overflow
+ if(Negative) {
+ Result = LLONG_MIN;
+ }
+ else {
+ Result = LLONG_MAX;
+ }
+ Negative = FALSE;
+ errno = ERANGE;
+ break;
+ }
+ pEnd = ++nptr;
+ }
+ if(Negative) {
+ Result = -Result;
+ }
+
+ // Save pointer to final sequence
+ if(endptr != NULL) {
+ *endptr = (char *)pEnd;
+ }
+ return Result;
+}
+
+/** The strtol, strtoll, strtoul, and strtoull functions convert the initial
+ portion of the string pointed to by nptr to long int, long long int,
+ unsigned long int, and unsigned long long int representation, respectively.
+ First, they decompose the input string into three parts: an initial,
+ possibly empty, sequence of white-space characters (as specified by the
+ isspace function), a subject sequence resembling an integer represented in
+ some radix determined by the value of base, and a final string of one or
+ more unrecognized characters, including the terminating null character of
+ the input string. Then, they attempt to convert the subject sequence to an
+ integer, and return the result.
+
+ If the value of base is zero, the expected form of the subject sequence is
+ that of an integer constant, optionally preceded
+ by a plus or minus sign, but not including an integer suffix. If the value
+ of base is between 2 and 36 (inclusive), the expected form of the subject
+ sequence is a sequence of letters and digits representing an integer with
+ the radix specified by base, optionally preceded by a plus or minus sign,
+ but not including an integer suffix. The letters from a (or A) through z
+ (or Z) are ascribed the values 10 through 35; only letters and digits whose
+ ascribed values are less than that of base are permitted. If the value of
+ base is 16, the characters 0x or 0X may optionally precede the sequence of
+ letters and digits, following the sign if present.
+
+ The subject sequence is defined as the longest initial subsequence of the
+ input string, starting with the first non-white-space character, that is of
+ the expected form. The subject sequence contains no characters if the input
+ string is empty or consists entirely of white space, or if the first
+ non-white-space character is other than a sign or a permissible letter or digit.
+
+ If the subject sequence has the expected form and the value of base is
+ zero, the sequence of characters starting with the first digit is
+ interpreted as an integer constant. If the subject sequence has the
+ expected form and the value of base is between 2 and 36, it is used as the
+ base for conversion, ascribing to each letter its value as given above. If
+ the subject sequence begins with a minus sign, the value resulting from the
+ conversion is negated (in the return type). A pointer to the final string
+ is stored in the object pointed to by endptr, provided that endptr is
+ not a null pointer.
+
+ In other than the "C" locale, additional locale-specific subject sequence
+ forms may be accepted.
+
+ If the subject sequence is empty or does not have the expected form, no
+ conversion is performed; the value of nptr is stored in the object pointed
+ to by endptr, provided that endptr is not a null pointer.
+
+ @return The strtol, strtoll, strtoul, and strtoull functions return the
+ converted value, if any. If no conversion could be performed, zero
+ is returned. If the correct value is outside the range of
+ representable values, LONG_MIN, LONG_MAX, LLONG_MIN, LLONG_MAX,
+ ULONG_MAX, or ULLONG_MAX is returned (according to the return type
+ and sign of the value, if any), and the value of the macro ERANGE
+ is stored in errno.
+**/
+long
+strtol(const char * nptr, char ** endptr, int base)
+{
+ const char *pEnd;
+ long Result = 0;
+ long Previous;
+ int temp;
+ BOOLEAN Negative = FALSE;
+
+ pEnd = nptr;
+
+ if((base < 0) || (base == 1) || (base > 36)) {
+ if(endptr != NULL) {
+ *endptr = NULL;
+ }
+ return 0;
+ }
+ // Skip leading spaces.
+ while(isspace(*nptr)) ++nptr;
+
+ // Process Subject sequence: optional sign followed by digits.
+ if(*nptr == '+') {
+ Negative = FALSE;
+ ++nptr;
+ }
+ else if(*nptr == '-') {
+ Negative = TRUE;
+ ++nptr;
+ }
+
+ if(*nptr == '0') { /* Might be Octal or Hex */
+ if(toupper(nptr[1]) == 'X') { /* Looks like Hex */
+ if((base == 0) || (base == 16)) {
+ nptr += 2; /* Skip the "0X" */
+ base = 16; /* In case base was 0 */
+ }
+ }
+ else { /* Looks like Octal */
+ if((base == 0) || (base == 8)) {
+ ++nptr; /* Skip the leading "0" */
+ base = 8; /* In case base was 0 */
+ }
+ }
+ }
+ if(base == 0) { /* If still zero then must be decimal */
+ base = 10;
+ }
+ if(*nptr == '0') {
+ for( ; *nptr == '0'; ++nptr); /* Skip any remaining leading zeros */
+ pEnd = nptr;
+ }
+
+ while( isalnum(*nptr) && ((temp = Digit2Val(*nptr)) < base)) {
+ Previous = Result;
+ Result = (Result * base) + (long int)temp;
+ if( Result <= Previous) { // Detect Overflow
+ if(Negative) {
+ Result = LONG_MIN;
+ }
+ else {
+ Result = LONG_MAX;
+ }
+ Negative = FALSE;
+ errno = ERANGE;
+ break;
+ }
+ pEnd = ++nptr;
+ }
+ if(Negative) {
+ Result = -Result;
+ }
+
+ // Save pointer to final sequence
+ if(endptr != NULL) {
+ *endptr = (char *)pEnd;
+ }
+ return Result;
+}
+
+/** The strtoull function converts the initial portion of the string pointed to
+ by nptr to unsigned long long int representation.
+
+ See the description for strtol for more information.
+
+ @return The strtoull function returns the converted value, if any. If no
+ conversion could be performed, zero is returned. If the correct
+ value is outside the range of representable values, ULLONG_MAX is
+ returned and the value of the macro ERANGE is stored in errno.
+**/
+unsigned long long
+strtoull(const char * nptr, char ** endptr, int base)
+{
+ const char *pEnd;
+ unsigned long long Result = 0;
+ unsigned long long Previous;
+ int temp;
+
+ pEnd = nptr;
+
+ if((base < 0) || (base == 1) || (base > 36)) {
+ if(endptr != NULL) {
+ *endptr = NULL;
+ }
+ return 0;
+ }
+ // Skip leading spaces.
+ while(isspace(*nptr)) ++nptr;
+
+ // Process Subject sequence: optional + sign followed by digits.
+ if(*nptr == '+') {
+ ++nptr;
+ }
+
+ if(*nptr == '0') { /* Might be Octal or Hex */
+ if(toupper(nptr[1]) == 'X') { /* Looks like Hex */
+ if((base == 0) || (base == 16)) {
+ nptr += 2; /* Skip the "0X" */
+ base = 16; /* In case base was 0 */
+ }
+ }
+ else { /* Looks like Octal */
+ if((base == 0) || (base == 8)) {
+ ++nptr; /* Skip the leading "0" */
+ base = 8; /* In case base was 0 */
+ }
+ }
+ }
+ if(base == 0) { /* If still zero then must be decimal */
+ base = 10;
+ }
+ if(*nptr == '0') {
+ for( ; *nptr == '0'; ++nptr); /* Skip any remaining leading zeros */
+ pEnd = nptr;
+ }
+
+ while( isalnum(*nptr) && ((temp = Digit2Val(*nptr)) < base)) {
+ Previous = Result;
+ Result = DivU64x32 (Result, base) + (unsigned long long)temp;
+ if( Result < Previous) { // If we overflowed
+ Result = ULLONG_MAX;
+ errno = ERANGE;
+ break;
+ }
+ pEnd = ++nptr;
+ }
+
+ // Save pointer to final sequence
+ if(endptr != NULL) {
+ *endptr = (char *)pEnd;
+ }
+ return Result;
+}
+
+/**
+ edk2 Jansson port does not support doubles, simply return 0.
+
+ These conversion functions convert the initial portion of the string
+ pointed to by nptr to double, float, and long double representation,
+ respectively.
+
+ The strtod(), strtof(), and strtold() functions return the converted
+ value, if any.
+
+ If endptr is not NULL, a pointer to the character after the last charac-
+ ter used in the conversion is stored in the location referenced by
+ endptr.
+
+ If no conversion is performed, zero is returned and the value of nptr is
+ stored in the location referenced by endptr.
+
+ If the correct value would cause overflow, plus or minus HUGE_VAL,
+ HUGE_VALF, or HUGE_VALL is returned (according to the sign and type of
+ the return value), and ERANGE is stored in errno. If the correct value
+ would cause underflow, zero is returned and ERANGE is stored in errno.
+
+ @return Return 0.
+**/
+double
+strtod (const char * __restrict nptr, char ** __restrict endptr) {
+ if(endptr)
+ *endptr = (char *)(nptr + strlen(nptr));
+
+ return (double)0;
+}
+
+/**
+ Allocate and zero-initialize array.
+**/
+void *
+calloc(size_t Num, size_t Size)
+{
+ void *RetVal;
+ size_t NumSize;
+
+ NumSize = Num * Size;
+ RetVal = NULL;
+ if (NumSize != 0) {
+ RetVal = malloc(NumSize);
+ if( RetVal != NULL) {
+ (VOID)ZeroMem( RetVal, NumSize);
+ }
+ }
+ DEBUG((DEBUG_POOL, "0x%p = calloc(%d, %d)\n", RetVal, Num, Size));
+
+ return RetVal;
+}
+
+//
+// The arrays give the cumulative number of days up to the first of the
+// month number used as the index (1 -> 12) for regular and leap years.
+// The value at index 13 is for the whole year.
+//
+UINTN CumulativeDays[2][14] = {
+ {
+ 0,
+ 0,
+ 31,
+ 31 + 28,
+ 31 + 28 + 31,
+ 31 + 28 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
+ },
+ {
+ 0,
+ 0,
+ 31,
+ 31 + 29,
+ 31 + 29 + 31,
+ 31 + 29 + 31 + 30,
+ 31 + 29 + 31 + 30 + 31,
+ 31 + 29 + 31 + 30 + 31 + 30,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
+ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
+ }
+};
+
+#define IsLeap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
+#define SECSPERMIN (60)
+#define SECSPERHOUR (60 * 60)
+#define SECSPERDAY (24 * SECSPERHOUR)
+
+/**
+ Get the system time as seconds elapsed since midnight, January 1, 1970.
+**/
+time_t time (time_t *timer)
+{
+ EFI_TIME Time;
+ time_t CalTime;
+ UINTN Year;
+
+ //
+ // Get the current time and date information
+ //
+ gRT->GetTime (&Time, NULL);
+
+ //
+ // Years Handling
+ // UTime should now be set to 00:00:00 on Jan 1 of the current year.
+ //
+ for (Year = 1970, CalTime = 0; Year != Time.Year; Year++) {
+ CalTime = CalTime + (time_t)(CumulativeDays[IsLeap(Year)][13] * SECSPERDAY);
+ }
+
+ //
+ // Add in number of seconds for current Month, Day, Hour, Minute, Seconds, and TimeZone adjustment
+ //
+ CalTime = CalTime +
+ (time_t)((Time.TimeZone != EFI_UNSPECIFIED_TIMEZONE) ? (Time.TimeZone * 60) : 0) +
+ (time_t)(CumulativeDays[IsLeap(Time.Year)][Time.Month] * SECSPERDAY) +
+ (time_t)(((Time.Day > 0) ? Time.Day - 1 : 0) * SECSPERDAY) +
+ (time_t)(Time.Hour * SECSPERHOUR) +
+ (time_t)(Time.Minute * 60) +
+ (time_t)Time.Second;
+
+ if (timer != NULL) {
+ *timer = CalTime;
+ }
+
+ return CalTime;
+}
+
+typedef
+int
+(*SORT_COMPARE)(
+ IN VOID *Buffer1,
+ IN VOID *Buffer2
+ );
+
+/**
+ Duplicated from EDKII BaseSortLib for qsort() wrapper
+ @param[in, out] BufferToSort on call a Buffer of (possibly sorted) elements
+ on return a buffer of sorted elements
+ @param[in] Count the number of elements in the buffer to sort
+ @param[in] ElementSize Size of an element in bytes
+ @param[in] CompareFunction The function to call to perform the comparison
+ of any 2 elements
+ @param[in] Buffer Buffer of size ElementSize for use in swapping
+**/
+STATIC
+VOID
+QuickSortWorker (
+ IN OUT VOID *BufferToSort,
+ IN CONST UINTN Count,
+ IN CONST UINTN ElementSize,
+ IN SORT_COMPARE CompareFunction,
+ IN VOID *Buffer
+ )
+{
+ VOID *Pivot;
+ UINTN LoopCount;
+ UINTN NextSwapLocation;
+
+ ASSERT(BufferToSort != NULL);
+ ASSERT(CompareFunction != NULL);
+ ASSERT(Buffer != NULL);
+
+ if (Count < 2 || ElementSize < 1) {
+ return;
+ }
+
+ NextSwapLocation = 0;
+
+ //
+ // Pick a pivot (we choose last element)
+ //
+ Pivot = ((UINT8 *)BufferToSort + ((Count - 1) * ElementSize));
+
+ //
+ // Now get the pivot such that all on "left" are below it
+ // and everything "right" are above it
+ //
+ for (LoopCount = 0; LoopCount < Count - 1; LoopCount++)
+ {
+ //
+ // If the element is less than the pivot
+ //
+ if (CompareFunction ((VOID *)((UINT8 *)BufferToSort + ((LoopCount) * ElementSize)), Pivot) <= 0) {
+ //
+ // Swap
+ //
+ CopyMem (Buffer, (UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), ElementSize);
+ CopyMem ((UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), (UINT8 *)BufferToSort + ((LoopCount) * ElementSize), ElementSize);
+ CopyMem ((UINT8 *)BufferToSort + ((LoopCount) * ElementSize), Buffer, ElementSize);
+
+ //
+ // Increment NextSwapLocation
+ //
+ NextSwapLocation++;
+ }
+ }
+ //
+ // Swap pivot to it's final position (NextSwapLocaiton)
+ //
+ CopyMem (Buffer, Pivot, ElementSize);
+ CopyMem (Pivot, (UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), ElementSize);
+ CopyMem ((UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), Buffer, ElementSize);
+
+ //
+ // Now recurse on 2 paritial lists. Neither of these will have the 'pivot' element.
+ // IE list is sorted left half, pivot element, sorted right half...
+ //
+ QuickSortWorker (
+ BufferToSort,
+ NextSwapLocation,
+ ElementSize,
+ CompareFunction,
+ Buffer
+ );
+
+ QuickSortWorker (
+ (UINT8 *)BufferToSort + (NextSwapLocation + 1) * ElementSize,
+ Count - NextSwapLocation - 1,
+ ElementSize,
+ CompareFunction,
+ Buffer
+ );
+
+ return;
+}
+
+/**
+ Performs a quick sort
+**/
+void qsort (void *base, size_t num, size_t width, int (*compare)(const void *, const void *))
+{
+ VOID *Buffer;
+
+ ASSERT (base != NULL);
+ ASSERT (compare != NULL);
+
+ //
+ // Use CRT-style malloc to cover BS and RT memory allocation.
+ //
+ Buffer = malloc (width);
+ ASSERT (Buffer != NULL);
+
+ //
+ // Re-use PerformQuickSort() function Implementation in EDKII BaseSortLib.
+ //
+ QuickSortWorker (base, (UINTN)num, (UINTN)width, (SORT_COMPARE)compare, Buffer);
+
+ free (Buffer);
+ return;
+}
+
+/**
+ Get character from stream, we don't support file operastion on edk2 JSON library.
+
+ @return Returns the character currently pointed by the internal file position indicator of the specified stream
+
+**/
+int fgetc(FILE * _File){
+ return 0;
+}
diff --git a/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.h b/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.h
new file mode 100644
index 0000000000..f17ee6397f
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.h
@@ -0,0 +1,198 @@
+/** @file
+ CRT wrapper head functions for jansson system call.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef JANSSON_CRT_LIB_SUPPORT_H_
+#define JANSSON_CRT_LIB_SUPPORT_H_
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PrintLib.h>
+
+#define MAX_STRING_SIZE 0x10000000
+
+// Minimum value for an object of type long long int.
+#define LLONG_MIN (-9223372036854775807LL - 1LL) // -(2^63 - 1)
+
+// Maximum value for an object of type long long int.
+#define LLONG_MAX 9223372036854775807LL // 2^63 - 1
+
+// We dont support double on edk2
+#define HUGE_VAL 0
+
+#if defined(MDE_CPU_X64) || defined(MDE_CPU_AARCH64) || defined(MDE_CPU_IA64)
+//
+// With GCC we would normally use SIXTY_FOUR_BIT_LONG, but MSVC needs
+// SIXTY_FOUR_BIT, because 'long' is 32-bit and only 'long long' is
+// 64-bit. Since using 'long long' works fine on GCC too, just do that.
+//
+#define SIXTY_FOUR_BIT
+#elif defined(MDE_CPU_IA32) || defined(MDE_CPU_ARM) || defined(MDE_CPU_EBC)
+#define THIRTY_TWO_BIT
+#else
+#error Unknown target architecture
+#endif
+
+//
+// Map all va_xxxx elements to VA_xxx defined in MdePkg/Include/Base.h
+//
+#if !defined(__CC_ARM) // if va_list is not already defined
+#define va_list VA_LIST
+#define va_arg VA_ARG
+#define va_start VA_START
+#define va_end VA_END
+#else // __CC_ARM
+#define va_start(Marker, Parameter) __va_start(Marker, Parameter)
+#define va_arg(Marker, TYPE) __va_arg(Marker, TYPE)
+#define va_end(Marker) ((void)0)
+#endif
+
+//
+// Definitions for global constants used by CRT library routines
+//
+#define EINVAL 22 /* Invalid argument */
+#define INT_MAX 0x7FFFFFFF /* Maximum (signed) int value */
+#define LONG_MAX 0X7FFFFFFFL /* max value for a long */
+#define LONG_MIN (-LONG_MAX-1) /* min value for a long */
+#define ULONG_MAX 0xFFFFFFFF /* Maximum unsigned long value */
+#define CHAR_BIT 8 /* Number of bits in a char */
+
+// Maximum value for an object of type unsigned long long int.
+#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL // 2^64 - 1
+// Maximum value for an object of type unsigned char.
+#define UCHAR_MAX 255 // 2^8 - 1
+
+//
+// Basic types mapping
+//
+typedef UINTN size_t;
+typedef INTN ssize_t;
+typedef INT32 time_t;
+typedef UINT8 __uint8_t;
+typedef UINT8 sa_family_t;
+typedef UINT32 uid_t;
+typedef UINT32 gid_t;
+typedef INT32 int32_t;
+typedef UINT32 uint32_t;
+typedef UINT16 uint16_t;
+typedef UINT8 uint8_t;
+typedef enum {false, true} bool;
+
+//
+// File operations are not required for EFI building,
+// so FILE is mapped to VOID * to pass build
+//
+typedef VOID *FILE;
+
+//
+// Global variables
+//
+extern int errno;
+extern FILE *stderr;
+
+//
+// Function prototypes of CRT Library routines
+//
+void *malloc (size_t);
+void *realloc (void *, size_t);
+void *calloc (size_t Num, size_t Size);
+void free (void *);
+void *memset (void *, int, size_t);
+int memcmp (const void *, const void *, size_t);
+int isdigit (int);
+int isspace (int);
+int tolower (int);
+int isupper (int);
+int isxdigit (int);
+int isalnum (int);
+void *memcpy (void *, const void *, size_t);
+void *memset (void *, int, size_t);
+void *memchr (const void *, int, size_t);
+int memcmp (const void *, const void *, size_t);
+void *memmove (void *, const void *, size_t);
+int strcmp (const char *, const char *);
+int strncmp (const char *, const char *, size_t);
+char *strcpy (char *, const char *);
+size_t strlen (const char *);
+char *strcat (char *, const char *);
+char *strchr (const char *, int);
+int strcasecmp (const char *, const char *);
+int strncasecmp (const char *, const char *, size_t);
+char *strncpy (char *, size_t, const char *, size_t);
+int strncmp (const char *, const char *, size_t);
+char *strrchr (const char *, int);
+unsigned long strtoul (const char *, char **, int);
+char * strstr (const char *s1 , const char *s2);
+long strtol (const char *, char **, int);
+char *strerror (int);
+size_t strspn (const char *, const char *);
+char * strdup (const char *str);
+char * strpbrk (const char *s1, const char *s2);
+unsigned long long strtoull(const char * nptr, char ** endptr, int base);
+long long strtoll (const char * nptr, char ** endptr, int base);
+long strtol (const char * nptr, char ** endptr, int base);
+double strtod (const char * __restrict nptr, char ** __restrict endptr);
+size_t strcspn (const char *, const char *);
+int printf (const char *, ...);
+int sscanf (const char *, const char *, ...);
+FILE *fopen (const char *, const char *);
+size_t fread (void *, size_t, size_t, FILE *);
+size_t fwrite (const void *, size_t, size_t, FILE *);
+int fclose (FILE *);
+int fprintf (FILE *, const char *, ...);
+int fgetc (FILE * _File);
+uid_t getuid (void);
+uid_t geteuid (void);
+gid_t getgid (void);
+gid_t getegid (void);
+void qsort (void *, size_t, size_t, int (*)(const void *, const void *));
+char *getenv (const char *);
+#if defined(__GNUC__) && (__GNUC__ >= 2)
+void abort (void) __attribute__((__noreturn__));
+#else
+void abort (void);
+#endif
+int toupper (int);
+int Digit2Val (int);
+time_t time (time_t *);
+
+//
+// Macros that directly map functions to BaseLib, BaseMemoryLib, and DebugLib functions
+//
+#define strcmp AsciiStrCmp
+#define memcpy(dest,source,count) CopyMem(dest,source,(UINTN)(count))
+#define memset(dest,ch,count) SetMem(dest,(UINTN)(count),(UINT8)(ch))
+#define memchr(buf,ch,count) ScanMem8(buf,(UINTN)(count),(UINT8)ch)
+#define memcmp(buf1,buf2,count) (int)(CompareMem(buf1,buf2,(UINTN)(count)))
+#define memmove(dest,source,count) CopyMem(dest,source,(UINTN)(count))
+#define strlen(str) (size_t)(AsciiStrnLenS(str,MAX_STRING_SIZE))
+#define strcpy(strDest,strSource) AsciiStrCpyS(strDest,(strlen(strSource)+1),strSource)
+#define strncpy(strDest,strSource,count) AsciiStrnCpyS(strDest,(UINTN)count,strSource,(UINTN)count)
+#define strncpys(strDest, DestLen, strSource,count) AsciiStrnCpyS(strDest,DestLen,strSource,(UINTN)count)
+#define strcat(strDest,strSource) AsciiStrCatS(strDest,(strlen(strSource)+strlen(strDest)+1),strSource)
+#define strchr(str,ch) ScanMem8((VOID *)(str),AsciiStrSize(str),(UINT8)ch)
+#define strncmp(string1,string2,count) (int)(AsciiStrnCmp(string1,string2,(UINTN)(count)))
+#define strcasecmp(str1,str2) (int)AsciiStriCmp(str1,str2)
+#define strstr(s1,s2) AsciiStrStr(s1,s2)
+#define sprintf(buf,...) AsciiSPrint(buf,MAX_STRING_SIZE,__VA_ARGS__)
+#define snprintf(buf,len,...) AsciiSPrint(buf,len,__VA_ARGS__)
+#define vsnprintf(buf,len,format,marker) AsciiVSPrint((buf),(len),(format),(marker))
+#define assert(expression)
+#define atoi(nptr) AsciiStrDecimalToUintn(nptr)
+#define fabs(x) (((x)<0.0)?(-x):(x))
+#define offsetof(type,member) OFFSET_OF(type,member)
+
+#define EOF (-1)
+
+extern int errno;
+
+#define ERANGE 34 /* 34 Result too large */
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/JsonLib.c b/RedfishPkg/Library/JsonLib/JsonLib.c
new file mode 100644
index 0000000000..3fa834add3
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/JsonLib.c
@@ -0,0 +1,960 @@
+/** @file
+ APIs for JSON operations.
+
+ Copyright (c) 2018 - 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Library/JsonLib.h>
+#include "JsonUtilities.h"
+
+/**
+ The function is used to convert a NULL terminated UTF8 encoded string to a JSON
+ value. Only object and array represented strings can be converted successfully,
+ since they are the only valid root values of a JSON text for UEFI usage.
+
+ Real number and number with exponent part are not supportted by UEFI.
+
+ Caller needs to cleanup the root value by calling JsonValueFree().
+
+ @param[in] Text The NULL terminated UTF8 encoded string to convert
+
+ @retval Array JSON value or object JSON value, or NULL when any error occurs.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+TextToJson (
+ IN CHAR8* Text
+ )
+{
+ json_error_t JsonError;
+
+ return (EDKII_JSON_VALUE) json_loads (Text, 0, &JsonError);
+}
+
+/**
+ The function is used to convert the JSON root value to a UTF8 encoded string which
+ is terminated by NULL, or return NULL on error.
+
+ Only array JSON value or object JSON value is valid for converting, and caller is
+ responsible for free converted string.
+
+ @param[in] Json The JSON value to be converted
+
+ @retval The JSON value converted UTF8 string or NULL.
+
+**/
+CHAR8*
+EFIAPI
+JsonToText (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ if (!JsonValueIsArray (Json) && !JsonValueIsObject (Json)) {
+ return NULL;
+ }
+
+ return json_dumps ((json_t *) Json, 0);
+}
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON array,
+ or NULL on error. Initially, the array is empty.
+
+ The reference count of this value will be set to 1, and caller needs to cleanup the
+ value by calling JsonValueFree().
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @retval The created JSON value which contains a JSON array or NULL.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitArray (
+ VOID
+ )
+{
+ return (EDKII_JSON_VALUE) json_array();
+}
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON object,
+ or NULL on error. Initially, the object is empty.
+
+ The reference count of this value will be set to 1, and caller needs to cleanup the
+ value by calling JsonValueFree().
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @retval The created JSON value which contains a JSON object or NULL.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitObject (
+ VOID
+ )
+{
+ return (EDKII_JSON_VALUE) json_object();
+}
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON string,
+ or NULL on error.
+
+ The input string must be NULL terminated Ascii format, non-Ascii characters will
+ be processed as an error. Unicode characters can also be represented by Ascii string
+ as the format: \u + 4 hexadecimal digits, like \u3E5A, or \u003F.
+
+ The reference count of this value will be set to 1, and caller needs to cleanup the
+ value by calling JsonValueFree().
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] String The Ascii string to initialize to JSON value
+
+ @retval The created JSON value which contains a JSON string or NULL. Select a
+ Getter API for a specific encoding format.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitAsciiString (
+ IN CONST CHAR8 *String
+ )
+{
+ UINTN Index;
+
+ if (String == NULL) {
+ return NULL;
+ }
+
+ Index = 0;
+ while (*(String + Index) != '\0') {
+ if (((*(String + Index)) & 0x80) != 0x00) {
+ return NULL;
+ }
+
+ Index ++;
+ }
+
+ return (EDKII_JSON_VALUE) json_string (String);
+}
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON string,
+ or NULL on error.
+
+ The input must be a NULL terminated UCS2 format Unicode string.
+
+ The reference count of this value will be set to 1, and caller needs to cleanup the
+ value by calling JsonValueFree().
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] String The Unicode string to initialize to JSON value
+
+ @retval The created JSON value which contains a JSON string or NULL. Select a
+ Getter API for a specific encoding format.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitUnicodeString (
+ IN CHAR16 *String
+ )
+{
+ EFI_STATUS Status;
+ CHAR8 *Utf8Str;
+
+ if (String == NULL) {
+ return NULL;
+ }
+
+ Utf8Str = NULL;
+ Status = UCS2StrToUTF8 (String, &Utf8Str);
+ if (EFI_ERROR (Status)) {
+ return NULL;
+ }
+
+ return (EDKII_JSON_VALUE) json_string (Utf8Str);
+}
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON integer,
+ or NULL on error.
+
+ The reference count of this value will be set to 1, and caller needs to cleanup the
+ value by calling JsonValueFree().
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] Value The integer to initialize to JSON value
+
+ @retval The created JSON value which contains a JSON number or NULL.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitNumber (
+ IN INT64 Value
+ )
+{
+ return (EDKII_JSON_VALUE) json_integer (Value);
+}
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON boolean,
+ or NULL on error.
+
+ Boolean JSON value is kept as static value, and no need to do any cleanup work.
+
+ @param[in] Value The boolean value to initialize.
+
+ @retval The created JSON value which contains a JSON boolean or NULL.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitBoolean (
+ IN BOOLEAN Value
+ )
+{
+ return (EDKII_JSON_VALUE) json_boolean (Value);
+}
+
+/**
+ The function is used to initialize a JSON value which contains a new JSON NULL,
+ or NULL on error.
+
+ NULL JSON value is kept as static value, and no need to do any cleanup work.
+
+ @retval The created NULL JSON value.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueInitNull (
+ VOID
+ )
+{
+ return (EDKII_JSON_VALUE) json_null();
+}
+
+/**
+ The function is used to decrease the reference count of a JSON value by one, and once
+ this reference count drops to zero, the value is destroyed and it can no longer be used.
+ If this destroyed value is object type or array type, reference counts for all containing
+ JSON values will be decreased by 1. Boolean JSON value and NULL JSON value won't be destroyed
+ since they are static values kept in memory.
+
+ Reference Count Strategy: BaseJsonLib uses this strategy to track whether a value is still
+ in use or not. When a value is created, it's reference count is set to 1. If a reference to a
+ value is kept for use, its reference count is incremented, and when the value is no longer
+ needed, the reference count is decremented. When the reference count drops to zero, there are
+ no references left, and the value can be destroyed.
+
+ The given JSON value maybe NULL and not causing any problem. Just output the debug message
+ to inform caller the NULL value is passed in.
+
+ @param[in] Json The JSON value to be freed. json_decref may return without any
+ changes if Json is NULL.
+
+**/
+VOID
+EFIAPI
+JsonValueFree (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ json_decref((json_t *)Json);
+}
+
+/**
+ The function is used to create a fresh copy of a JSON value, and all child values are deep
+ copied in a recursive fashion. It should be called when this JSON value might be modified
+ in later use, but the original still wants to be used in somewhere else.
+
+ Reference counts of the returned root JSON value and all child values will be set to 1, and
+ caller needs to cleanup the root value by calling JsonValueFree().
+
+ * Note: Since this function performs a copy from bottom to up, too many calls may cause some
+ performance issues, user should avoid unnecessary calls to this function unless it is really
+ needed.
+
+ @param[in] Json The JSON value to be cloned.
+
+ @retval Return the cloned JSON value, or NULL on error.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonValueClone (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ return (EDKII_JSON_VALUE) json_deep_copy ((json_t *) Json);
+}
+
+/**
+ The function is used to return if the provided JSON value contains a JSON array.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value contains a JSON array.
+ @retval FALSE The JSON value doesn't contain a JSON array.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsArray (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ return json_is_array ((json_t *) Json);
+}
+
+/**
+ The function is used to return if the provided JSON value contains a JSON object.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value contains a JSON object.
+ @retval FALSE The JSON value doesn't contain a JSON object.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsObject (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ return json_is_object ((json_t *) Json);
+}
+
+/**
+ The function is used to return if the provided JSON Value contains a string, Ascii or
+ Unicode format is not differentiated.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value contains a JSON string.
+ @retval FALSE The JSON value doesn't contain a JSON string.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsString (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ return json_is_string ((json_t *) Json);
+}
+
+/**
+ The function is used to return if the provided JSON value contains a JSON number.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value is contains JSON number.
+ @retval FALSE The JSON value doesn't contain a JSON number.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsNumber (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ return json_is_integer ((json_t *) Json);
+}
+
+/**
+ The function is used to return if the provided JSON value contains a JSON boolean.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value contains a JSON boolean.
+ @retval FALSE The JSON value doesn't contain a JSON boolean.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsBoolean (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ return json_is_boolean ((json_t *) Json);
+}
+
+/**
+ The function is used to return if the provided JSON value contains a JSON NULL.
+
+ @param[in] Json The provided JSON value.
+
+ @retval TRUE The JSON value contains a JSON NULL.
+ @retval FALSE The JSON value doesn't contain a JSON NULL.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueIsNull (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ return json_is_null ((json_t *) Json);
+}
+
+/**
+ The function is used to retrieve the associated array in an array type JSON value.
+
+ Any changes to the returned array will impact the original JSON value.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated array in JSON value or NULL.
+
+**/
+EDKII_JSON_ARRAY
+EFIAPI
+JsonValueGetArray (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ if (Json == NULL || !JsonValueIsArray (Json)) {
+ return NULL;
+ }
+
+ return (EDKII_JSON_ARRAY) Json;
+}
+
+/**
+ The function is used to retrieve the associated object in an object type JSON value.
+
+ Any changes to the returned object will impact the original JSON value.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated object in JSON value or NULL.
+
+**/
+EDKII_JSON_OBJECT
+EFIAPI
+JsonValueGetObject (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ if (Json == NULL || !JsonValueIsObject (Json)) {
+ return NULL;
+ }
+
+ return (EDKII_JSON_OBJECT) Json;
+}
+
+/**
+ The function is used to retrieve the associated Ascii string in a string type JSON value.
+
+ Any changes to the returned string will impact the original JSON value.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated Ascii string in JSON value or NULL.
+
+**/
+CHAR8*
+EFIAPI
+JsonValueGetAsciiString (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ CHAR8 *AsciiStr;
+ UINTN Index;
+
+ AsciiStr = (CHAR8 *) ((json_t *) Json);
+ if (AsciiStr == NULL) {
+ return NULL;
+ }
+
+ Index = 0;
+ while (*(AsciiStr + Index) != '\0') {
+ if (((*(AsciiStr + Index)) & 0x80) != 0x00) {
+ return NULL;
+ }
+
+ Index ++;
+ }
+
+ return AsciiStr;
+}
+
+/**
+ The function is used to retrieve the associated Unicode string in a string type JSON value.
+
+ Caller can do any changes to the returned string without any impact to the original JSON
+ value, and caller needs to free the returned string.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated Unicode string in JSON value or NULL.
+
+**/
+CHAR16*
+EFIAPI
+JsonValueGetUnicodeString (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ EFI_STATUS Status;
+ CONST CHAR8 *Utf8Str;
+ CHAR16 *Ucs2Str;
+
+ Utf8Str = json_string_value ((json_t *) Json);
+ if (Utf8Str == NULL) {
+ return NULL;
+ }
+
+ Status = UTF8StrToUCS2 ((CHAR8*)Utf8Str, &Ucs2Str);
+ if (EFI_ERROR (Status)) {
+ return NULL;
+ }
+
+ return Ucs2Str;
+}
+
+/**
+ The function is used to retrieve the associated integer in a number type JSON value.
+
+ The input JSON value should not be NULL or contain no JSON number, otherwise it will
+ ASSERT() and return 0.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated number in JSON value.
+
+**/
+INT64
+EFIAPI
+JsonValueGetNumber (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ ASSERT (Json != NULL && JsonValueIsNumber (Json));
+ if (Json == NULL || !JsonValueIsNumber (Json)) {
+ return 0;
+ }
+
+ return json_integer_value ((json_t *) Json);
+}
+
+/**
+ The function is used to retrieve the associated boolean in a boolean type JSON value.
+
+ The input JSON value should not be NULL or contain no JSON boolean, otherwise it will
+ ASSERT() and return FALSE.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated value of JSON boolean.
+
+**/
+BOOLEAN
+EFIAPI
+JsonValueGetBoolean (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ ASSERT (Json != NULL && JsonValueIsBoolean (Json));
+ if (Json == NULL || !JsonValueIsBoolean (Json)) {
+ return FALSE;
+ }
+
+ return json_is_true ((json_t *) Json);
+}
+
+/**
+ The function is used to retrieve the associated string in a string type JSON value.
+
+ Any changes to the returned string will impact the original JSON value.
+
+ @param[in] Json The provided JSON value.
+
+ @retval Return the associated Ascii string in JSON value or NULL.
+
+**/
+CONST CHAR8*
+EFIAPI
+JsonValueGetString (
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ return json_string_value ((const json_t *)Json);
+}
+
+/**
+ The function is used to get the number of elements in a JSON object, or 0 if it is NULL or
+ not a JSON object.
+
+ @param[in] JsonObject The provided JSON object.
+
+ @retval Return the number of elements in this JSON object or 0.
+
+**/
+UINTN
+EFIAPI
+JsonObjectSize (
+ IN EDKII_JSON_OBJECT JsonObject
+ )
+{
+ return json_object_size ((json_t *) JsonObject);
+}
+
+/**
+ The function is used to enumerate all keys in a JSON object.
+
+ Caller should be responsible to free the returned key array refference. But contained keys
+ are read only and must not be modified or freed.
+
+ @param[in] JsonObj The provided JSON object for enumeration.
+ @param[out] KeyCount The count of keys in this JSON object.
+
+ @retval Return an array of the enumerated keys in this JSON object or NULL.
+
+**/
+CHAR8**
+JsonObjectGetKeys (
+ IN EDKII_JSON_OBJECT JsonObj,
+ OUT UINTN *KeyCount
+ )
+{
+
+ UINTN Index;
+ CONST CHAR8 **KeyArray;
+ CONST CHAR8 *Key;
+ EDKII_JSON_VALUE Value;
+
+ if (JsonObj == NULL || KeyCount == NULL) {
+ return NULL;
+ }
+
+ Index = 0;
+ json_object_foreach(JsonObj, Key, Value) {
+ Index ++;
+ }
+ if (Index == 0) {
+ *KeyCount = 0;
+ return NULL;
+ }
+
+ *KeyCount = Index;
+ KeyArray = (CONST CHAR8 **) AllocateZeroPool (*KeyCount * sizeof (CHAR8 *));
+ if (KeyArray == NULL) {
+ return NULL;
+ }
+
+ Key = NULL;
+ Value = NULL;
+ Index = 0;
+ json_object_foreach((json_t *) JsonObj, Key, Value) {
+ KeyArray[Index] = Key;
+ Index ++;
+ }
+
+ return (CHAR8 **)KeyArray;
+}
+
+/**
+ The function is used to get a JSON value corresponding to the input key from a JSON object.
+
+ It only returns a reference to this value and any changes on this value will impact the
+ original JSON object. If that is not expected, please call JsonValueClone() to clone it to
+ use.
+
+ Input key must be a valid NULL terminated UTF8 encoded string. NULL will be returned when
+ Key-Value is not found in this JSON object.
+
+ @param[in] JsonObj The provided JSON object.
+ @param[in] Key The key of the JSON value to be retrieved.
+
+ @retval Return the corresponding JSON value to key, or NULL on error.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonObjectGetValue (
+ IN CONST EDKII_JSON_OBJECT JsonObj,
+ IN CONST CHAR8 *Key
+ )
+{
+ return (EDKII_JSON_VALUE) json_object_get ((const json_t *)JsonObj, (const char *)Key);
+}
+
+/**
+ The function is used to set a JSON value corresponding to the input key from a JSON object,
+ and the reference count of this value will be increased by 1.
+
+ Input key must be a valid NULL terminated UTF8 encoded string. If there already is a value for
+ this key, this key will be assigned to the new JSON value. The old JSON value will be removed
+ from this object and thus its' reference count will be decreased by 1.
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] JsonObj The provided JSON object.
+ @param[in] Key The key of the JSON value to be set.
+ @param[in] Json The JSON value to set to this JSON object mapped by key.
+
+ @retval EFI_ABORTED Some error occur and operation aborted.
+ @retval EFI_SUCCESS The JSON value has been set to this JSON object.
+
+**/
+EFI_STATUS
+EFIAPI
+JsonObjectSetValue (
+ IN EDKII_JSON_OBJECT JsonObj,
+ IN CONST CHAR8 *Key,
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ if (json_object_set ((json_t *) JsonObj, Key, (json_t *) Json) != 0) {
+ return EFI_ABORTED;
+ } else {
+ return EFI_SUCCESS;
+ }
+}
+
+/**
+ The function is used to get the number of elements in a JSON array, or 0 if it is NULL or
+ not a JSON array.
+
+ @param[in] JsonArray The provided JSON array.
+
+ @retval Return the number of elements in this JSON array or 0.
+
+**/
+UINTN
+EFIAPI
+JsonArrayCount (
+ IN EDKII_JSON_ARRAY JsonArray
+ )
+{
+ return json_array_size ((json_t *) JsonArray);
+}
+
+/**
+ The function is used to return the JSON value in the array at position index. The valid range
+ for this index is from 0 to the return value of JsonArrayCount() minus 1.
+
+ It only returns a reference to this value and any changes on this value will impact the
+ original JSON object. If that is not expected, please call JsonValueClone() to clone it to
+ use.
+
+ If this array is NULL or not a JSON array, or if index is out of range, NULL will be returned.
+
+ @param[in] JsonArray The provided JSON Array.
+
+ @retval Return the JSON value located in the Index position or NULL.
+
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonArrayGetValue (
+ IN EDKII_JSON_ARRAY JsonArray,
+ IN UINTN Index
+ )
+{
+ return (EDKII_JSON_VALUE) json_array_get ((json_t *) JsonArray, Index);
+}
+
+/**
+ The function is used to append a JSON value to the end of the JSON array, and grow the size of
+ array by 1. The reference count of this value will be increased by 1.
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] JsonArray The provided JSON object.
+ @param[in] Json The JSON value to append.
+
+ @retval EFI_ABORTED Some error occur and operation aborted.
+ @retval EFI_SUCCESS JSON value has been appended to the end of the JSON array.
+
+**/
+EFI_STATUS
+EFIAPI
+JsonArrayAppendValue (
+ IN EDKII_JSON_ARRAY JsonArray,
+ IN EDKII_JSON_VALUE Json
+ )
+{
+ if (json_array_append ((json_t *) JsonArray, (json_t *) Json) != 0) {
+ return EFI_ABORTED;
+ } else {
+ return EFI_SUCCESS;
+ }
+}
+
+/**
+ The function is used to remove a JSON value at position index, shifting the elements after index
+ one position towards the start of the array. The reference count of this value will be decreased
+ by 1.
+
+ More details for reference count strategy can refer to the API description for JsonValueFree().
+
+ @param[in] JsonArray The provided JSON array.
+ @param[in] Index The Index position before removement.
+
+ @retval EFI_ABORTED Some error occur and operation aborted.
+ @retval EFI_SUCCESS The JSON array has been removed at position index.
+
+**/
+EFI_STATUS
+EFIAPI
+JsonArrayRemoveValue (
+ IN EDKII_JSON_ARRAY JsonArray,
+ IN UINTN Index
+ )
+{
+ if (json_array_remove ((json_t *) JsonArray, Index) != 0) {
+ return EFI_ABORTED;
+ } else {
+ return EFI_SUCCESS;
+ }
+}
+
+/**
+ Dump JSON to a buffer.
+
+ @param[in] JsonValue The provided JSON array.
+ @param[in] Flags The Index position before removement.
+
+ @retval NULL Dump fail if NULL returned, otherwise the buffer
+ contain JSON paylaod in ASCII string.
+**/
+CHAR8 *
+EFIAPI
+JsonDumpString (
+ IN EDKII_JSON_ARRAY JsonValue,
+ IN UINTN Flags
+ )
+{
+ if (JsonValue == NULL) {
+ return NULL;
+ }
+ return json_dumps((json_t *)JsonValue, Flags);
+}
+
+/**
+ Load JSON from a buffer.
+
+ @param[in] Buffer Bufffer to the JSON payload
+ @param[in] BufferLen Length of the buffer
+ @param[in] Flags Flag of loading JSON buffer
+ @param[in] Error Pointer to error structure
+
+ @retval EDKII_JSON_VALUE NULL means fail to load JSON payload.
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonLoadBuffer (
+ IN CONST CHAR8 *Buffer,
+ IN UINTN BufferLen,
+ IN UINTN Flags,
+ IN EDKII_JSON_ERROR *Error
+ )
+{
+ return json_loadb(Buffer, BufferLen, Flags, (json_error_t *)Error);
+}
+
+/**
+ Decrease reference.
+
+ @param[in] JsonValue JSON value
+**/
+VOID
+EFIAPI
+JsonDecreaseReference (
+ IN EDKII_JSON_VALUE JsonValue
+ )
+{
+ json_decref (JsonValue);
+}
+
+/**
+ Increase reference.
+
+ @param[in] JsonValue JSON value
+ @retval EDKII_JSON_VALUE of itself
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonIncreaseReference (
+ IN EDKII_JSON_VALUE JsonValue
+ )
+{
+ return json_incref (JsonValue);
+}
+
+/**
+ Returns an opaque iterator which can be used to iterate over all key-value pairs
+ in object, or NULL if object is empty.
+
+ @param[in] JsonValue JSON value
+ @retval Iterator pointer
+**/
+VOID *
+EFIAPI
+JsonObjectIterator (
+ IN EDKII_JSON_VALUE JsonValue
+ )
+{
+ return json_object_iter (JsonValue);
+}
+
+/**
+ Extract the associated value from iterator.
+
+ @param[in] Iterator Iterator pointer
+ @retval EDKII_JSON_VALUE
+**/
+EDKII_JSON_VALUE
+EFIAPI
+JsonObjectIteratorValue (
+ IN VOID *Iterator
+ )
+{
+ return json_object_iter_value(Iterator);
+}
+
+/**
+ Returns an iterator pointing to the next key-value pair in object after iter,
+ or NULL if the whole object has been iterated through.
+
+ @param[in] JsonValue JSON value
+ @param[in] Iterator Iterator pointer
+ @retval Iterator pointer
+**/
+VOID *
+JsonObjectIteratorNext (
+ IN EDKII_JSON_VALUE JsonValue,
+ IN VOID *Iterator
+ )
+{
+ return json_object_iter_next(JsonValue, Iterator);
+}
+
+/**
+ Returns the json type of this json value.
+
+ @param[in] JsonValue JSON value
+ @retval JSON type returned
+**/
+EDKII_JSON_TYPE
+EFIAPI
+JsonGetType (
+ IN EDKII_JSON_VALUE JsonValue
+ )
+{
+ return ((json_t *)JsonValue)->type;
+}
diff --git a/RedfishPkg/Library/JsonLib/JsonLib.inf b/RedfishPkg/Library/JsonLib/JsonLib.inf
new file mode 100644
index 0000000000..16df2ae183
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/JsonLib.inf
@@ -0,0 +1,103 @@
+## @file
+# Thirty party Jansson library for JSON operations.
+#
+# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+# (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x0001001b
+ BASE_NAME = JsonLib
+ FILE_GUID = F5E36815-305A-4C5A-9D75-4F2149E45255
+ MODULE_TYPE = UEFI_DRIVER
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = JsonLib | DXE_DRIVER DXE_RUNTIME_DRIVER UEFI_APPLICATION UEFI_DRIVER
+
+#
+# VALID_ARCHITECTURES = IA32 X64 ARM AARCH64 RISCV64
+#
+
+[Sources]
+ #
+ # Below are the source code of third
+ # party jansson library.
+ #
+ jansson/src/dump.c
+ jansson/src/error.c
+ jansson/src/hashtable.c
+ jansson/src/hashtable_seed.c
+ jansson/src/memory.c
+ jansson/src/pack_unpack.c
+ jansson/src/strbuffer.c
+ jansson/src/strconv.c
+ jansson/src/utf.c
+ jansson/src/value.c
+ jansson/src/version.c
+ #
+ # Below are the source of edk2 JsonLib.
+ #
+ JsonLib.c
+ JsonUtilities.c
+ JsonUtilities.h
+ JanssonCrtLibSupport.c
+ JanssonCrtLibSupport.h
+ jansson_config.h
+ jansson_private_config.h
+ sys/time.h
+ sys/types.h
+ assert.h
+ errno.h
+ limits.h
+ math.h
+ stdarg.h
+ stddef.h
+ stdio.h
+ stdlib.h
+ string.h
+ time.h
+ #
+ # Below is the source code override to fix the build issue.
+ # Add code in load.c to conditionally use stdin according
+ # to HAVE_UNISTD_H macro. The PR is submitted to jansson
+ # open source community.
+ # https://github.com/akheron/jansson/pull/558
+ #
+ load.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ RedfishPkg/RedfishPkg.dec
+
+[LibraryClasses]
+ UefiLib
+ BaseLib
+ BaseMemoryLib
+ MemoryAllocationLib
+ UefiRuntimeServicesTableLib
+ DebugLib
+ PrintLib
+
+[BuildOptions]
+ #
+ # Disables the following Visual Studio compiler warnings
+ # so we do not break the build with /WX option:
+ # C4090: 'function' : different 'const' qualifiers
+ # C4244: conversion from type1 to type2, possible loss of data
+ # C4702: unreachable code
+ # C4706: assignment within conditional expression
+ # C4456: declaration hides previous local declaration
+ # C4334: 32-bit shift implicitly converted to 64-bit
+ # C4204: nonstandard extension used: non-constant aggregate initializer
+ # C4267: 'var' : conversion from 'size_t' to 'type', possible loss of data
+ #
+ # Define macro HAVE_CONFIG_H to include jansson_private_config.h to build.
+ # Undefined _WIN32, WIN64, _MSC_VER macros
+ # On GCC, no error on the unused-function and unused-but-set-variable.
+ #
+ MSFT:*_*_*_CC_FLAGS = /wd4204 /wd4267 /wd4702 /wd4706 /wd4244 /wd4090 /wd4456 /wd4334 /DHAVE_CONFIG_H=1 /U_WIN32 /UWIN64 /U_MSC_VER
+ GCC:*_*_*_CC_FLAGS = -Wno-unused-function -Wno-unused-but-set-variable
+
diff --git a/RedfishPkg/Library/JsonLib/JsonUtilities.c b/RedfishPkg/Library/JsonLib/JsonUtilities.c
new file mode 100644
index 0000000000..f84a133219
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/JsonUtilities.c
@@ -0,0 +1,417 @@
+/** @file
+ Utility functions for JSON operations.
+
+ Copyright (c) 2018 - 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "JsonUtilities.h"
+
+/**
+ Since each UCS2 character can be represented by 1-3 UTF8 encoded characters,
+ this function is used to retrieve the UTF8 encoding size for a UCS2 character.
+
+ @param[in] Utf8Buffer The buffer for UTF8 encoded data.
+
+ @retval Return the size of UTF8 encoding string or 0 if it is not for
+ UCS2 format.
+
+**/
+UINT8
+GetUTF8SizeForUCS2 (
+ IN CHAR8 *Utf8Buffer
+ )
+{
+ CHAR8 TempChar;
+ UINT8 Utf8Size;
+
+ ASSERT (Utf8Buffer != NULL);
+
+ TempChar = *Utf8Buffer;
+ if ((TempChar & 0xF0) == 0xF0) {
+
+ //
+ // This format is not for UCS2.
+ //
+ return 0;
+ }
+
+ Utf8Size = 1;
+ if ((TempChar & 0x80) == 0x80) {
+ if ((TempChar & 0xC0) == 0xC0) {
+
+ Utf8Size ++;
+ if ((TempChar & 0xE0) == 0xE0) {
+
+ Utf8Size ++;
+ }
+ }
+ }
+
+ return Utf8Size;
+}
+
+/**
+ Since each UCS2 character can be represented by the format: \uXXXX, this function
+ is used to retrieve the UCS2 character from a Unicode format.
+ Call MUST make sure there are at least 6 Bytes in the input UTF8 buffer.
+
+ @param[in] Utf8Buffer The buffer for UTF8 encoded data.
+ @param[out] Ucs2Char The converted UCS2 character.
+
+ @retval EFI_INVALID_PARAMETER Non-Ascii characters found in the hexadecimal
+ digits string, and can't be converted to a UCS2
+ character.
+ @retval EFI_SUCCESS The UCS2 character has been retrieved.
+
+**/
+EFI_STATUS
+GetUCS2CharByFormat (
+ IN CHAR8 *Utf8Buffer,
+ OUT CHAR16 *Ucs2Char
+ )
+{
+ UINT8 Num1;
+ UINT8 Num2;
+ UINT8 Index;
+ CHAR8 Ucs2CharFormat[JSON_UNICODE_FORMAT_CHAR_SIZE]; /// two Hexadecimal digits Ascii string, like "3F"
+
+ for (Index = 0; Index < 4; Index ++) {
+ if ((*(Utf8Buffer + 2 + Index) & 0x80) != 0x00) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+
+ ZeroMem (Ucs2CharFormat, JSON_UNICODE_FORMAT_CHAR_SIZE);
+
+ //
+ // Get the First Number, Offset is 2
+ //
+ CopyMem (Ucs2CharFormat, Utf8Buffer + 2, JSON_UNICODE_FORMAT_CHAR_LEN);
+ Num1 = (UINT8) AsciiStrHexToUintn (Ucs2CharFormat);
+
+ //
+ // Get the Second Number, Offset is 4
+ //
+ CopyMem (Ucs2CharFormat, Utf8Buffer + 4, JSON_UNICODE_FORMAT_CHAR_LEN);
+ Num2 = (UINT8) AsciiStrHexToUintn (Ucs2CharFormat);
+
+ //
+ // Ucs2Char is Little-Endian
+ //
+ *((CHAR8 *) Ucs2Char) = Num2;
+ *(((CHAR8 *) Ucs2Char) + 1) = Num1;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Convert a UCS2 character to UTF8 encoding string.
+
+ @param[in] Ucs2Char The provided UCS2 character.
+ @param[out] Utf8Buffer The converted UTF8 encoded data.
+
+ @retval Return the size of UTF8 encoding data for this UCS2 character.
+
+**/
+UINT8
+UCS2CharToUTF8 (
+ IN CHAR16 Ucs2Char,
+ OUT CHAR8 *Utf8Buffer
+ )
+{
+ UINT16 Ucs2Number;
+
+ ASSERT (Utf8Buffer != NULL);
+
+ Ucs2Number = (UINT16) Ucs2Char;
+ if (Ucs2Number <= 0x007F) {
+
+ //
+ // UTF8 format: 0xxxxxxx
+ //
+ *Utf8Buffer = Ucs2Char & 0x7F;
+ return 1;
+
+ } else if (Ucs2Number >= 0x0080 && Ucs2Number <= 0x07FF) {
+
+ //
+ // UTF8 format: 110xxxxx 10xxxxxx
+ //
+ *(Utf8Buffer + 1) = (Ucs2Char & 0x3F) | 0x80;
+ *Utf8Buffer = ((Ucs2Char >> 6) & 0x1F) | 0xC0;
+ return 2;
+
+ } else { /// Ucs2Number >= 0x0800 && Ucs2Number <= 0xFFFF
+
+ //
+ // UTF8 format: 1110xxxx 10xxxxxx 10xxxxxx
+ //
+ *(Utf8Buffer + 2) = (Ucs2Char & 0x3F) | 0x80;
+ *(Utf8Buffer + 1) = ((Ucs2Char >> 6) & 0x3F) | 0x80;
+ *Utf8Buffer = ((Ucs2Char >> 12) & 0x0F) | 0xE0;
+ return 3;
+ }
+}
+
+/**
+ Convert a UTF8 encoded data to a UCS2 character.
+
+ @param[in] Utf8Buffer The provided UTF8 encoded data.
+ @param[out] Ucs2Char The converted UCS2 character.
+
+ @retval EFI_INVALID_PARAMETER The UTF8 encoded string is not valid or
+ not for UCS2 character.
+ @retval EFI_SUCCESS The converted UCS2 character.
+
+**/
+EFI_STATUS
+UTF8ToUCS2Char (
+ IN CHAR8 *Utf8Buffer,
+ OUT CHAR16 *Ucs2Char
+ )
+{
+ UINT8 Utf8Size;
+ CHAR8 *Ucs2Buffer;
+ CHAR8 TempChar1;
+ CHAR8 TempChar2;
+ CHAR8 TempChar3;
+
+ ASSERT (Utf8Buffer != NULL && Ucs2Char != NULL);
+ ZeroMem (Ucs2Char, sizeof (CHAR16));
+ Ucs2Buffer = (CHAR8 *) Ucs2Char;
+
+ Utf8Size = GetUTF8SizeForUCS2 (Utf8Buffer);
+ switch (Utf8Size) {
+
+ case 1:
+
+ //
+ // UTF8 format: 0xxxxxxx
+ //
+ TempChar1 = *Utf8Buffer;
+ if ((TempChar1 & 0x80) != 0x00) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *Ucs2Buffer = TempChar1;
+ *(Ucs2Buffer + 1) = 0;
+ break;
+
+ case 2:
+
+ //
+ // UTF8 format: 110xxxxx 10xxxxxx
+ //
+ TempChar1 = *Utf8Buffer;
+ if ((TempChar1 & 0xE0) != 0xC0) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ TempChar2 = *(Utf8Buffer + 1);
+ if ((TempChar2 & 0xC0) != 0x80) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *Ucs2Buffer = (TempChar1 << 6) + (TempChar2 & 0x3F);
+ *(Ucs2Buffer + 1) = (TempChar1 >> 2) & 0x07;
+ break;
+
+ case 3:
+
+ //
+ // UTF8 format: 1110xxxx 10xxxxxx 10xxxxxx
+ //
+ TempChar1 = *Utf8Buffer;
+ if ((TempChar1 & 0xF0) != 0xE0) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ TempChar2 = *(Utf8Buffer + 1);
+ if ((TempChar2 & 0xC0) != 0x80) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ TempChar3 = *(Utf8Buffer + 2);
+ if ((TempChar3 & 0xC0) != 0x80) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *Ucs2Buffer = (TempChar2 << 6) + (TempChar3 & 0x3F);
+ *(Ucs2Buffer + 1) = (TempChar1 << 4) + ((TempChar2 >> 2) & 0x0F);
+
+ break;
+
+ default:
+
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Convert a UCS2 string to a UTF8 encoded string.
+
+ @param[in] Ucs2Str The provided UCS2 string.
+ @param[out] Utf8StrAddr The converted UTF8 string address. Caller
+ is responsible for Free this string.
+
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+ @retval EFI_OUT_OF_RESOURCES System runs out of resources.
+ @retval EFI_SUCCESS The UTF8 encoded string has been converted.
+
+**/
+EFI_STATUS
+UCS2StrToUTF8 (
+ IN CHAR16 *Ucs2Str,
+ OUT CHAR8 **Utf8StrAddr
+ )
+{
+ UINTN Ucs2StrIndex;
+ UINTN Ucs2StrLength;
+ CHAR8 *Utf8Str;
+ UINTN Utf8StrLength;
+ UINTN Utf8StrIndex;
+ CHAR8 Utf8Buffer[UTF8_BUFFER_FOR_UCS2_MAX_SIZE];
+ UINT8 Utf8BufferSize;
+
+ if (Ucs2Str == NULL || Utf8StrAddr == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Ucs2StrLength = StrLen (Ucs2Str);
+ Utf8StrLength = 0;
+
+ for (Ucs2StrIndex = 0; Ucs2StrIndex < Ucs2StrLength; Ucs2StrIndex ++) {
+
+ ZeroMem (Utf8Buffer, sizeof (Utf8Buffer));
+ Utf8BufferSize = UCS2CharToUTF8 (Ucs2Str[Ucs2StrIndex], Utf8Buffer);
+ Utf8StrLength += Utf8BufferSize;
+ }
+
+ Utf8Str = AllocateZeroPool (Utf8StrLength + 1);
+ if (Utf8Str == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Utf8StrIndex = 0;
+ for (Ucs2StrIndex = 0; Ucs2StrIndex < Ucs2StrLength; Ucs2StrIndex ++) {
+
+ ZeroMem (Utf8Buffer, sizeof (Utf8Buffer));
+ Utf8BufferSize = UCS2CharToUTF8 (Ucs2Str[Ucs2StrIndex], Utf8Buffer);
+
+ CopyMem (Utf8Str + Utf8StrIndex, Utf8Buffer, Utf8BufferSize);
+ Utf8StrIndex += Utf8BufferSize;
+ }
+
+ Utf8Str[Utf8StrIndex] = '\0';
+ *Utf8StrAddr = Utf8Str;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Convert a UTF8 encoded string to a UCS2 string.
+
+ @param[in] Utf8Str The provided UTF8 encoded string.
+ @param[out] Ucs2StrAddr The converted UCS2 string address. Caller
+ is responsible for Free this string.
+
+ @retval EFI_INVALID_PARAMETER The UTF8 encoded string is not valid to
+ convert to UCS2 string.
+ One or more parameters are invalid.
+ @retval EFI_OUT_OF_RESOURCES System runs out of resources.
+ @retval EFI_SUCCESS The UCS2 string has been converted.
+
+**/
+EFI_STATUS
+UTF8StrToUCS2 (
+ IN CHAR8 *Utf8Str,
+ OUT CHAR16 **Ucs2StrAddr
+ )
+{
+ EFI_STATUS Status;
+ UINTN Utf8StrIndex;
+ UINTN Utf8StrLength;
+ UINTN Ucs2StrIndex;
+ UINT8 Utf8BufferSize;
+ CHAR16 *Ucs2StrTemp;
+
+ if (Utf8Str == NULL || Ucs2StrAddr == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // It is not an Ascii string, calculate string length.
+ //
+ Utf8StrLength = 0;
+ while (*(Utf8Str + Utf8StrLength) != '\0') {
+ Utf8StrLength ++;
+ }
+
+ //
+ // UCS2 string shall not be longer than the UTF8 string.
+ //
+ Ucs2StrTemp = AllocateZeroPool ((Utf8StrLength + 1) * sizeof (CHAR16));
+ if (Ucs2StrTemp == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Utf8StrIndex = 0;
+ Ucs2StrIndex = 0;
+ while (Utf8Str[Utf8StrIndex] != '\0') {
+
+ if (CompareMem (Utf8Str + Utf8StrIndex, "\\u", 2) == 0 &&
+ Utf8StrLength - Utf8StrIndex >= JSON_UNICODE_FORMAT_LEN) {
+
+ Status = GetUCS2CharByFormat (Utf8Str + Utf8StrIndex, Ucs2StrTemp + Ucs2StrIndex);
+ if (!EFI_ERROR (Status)) {
+
+ Utf8StrIndex += JSON_UNICODE_FORMAT_LEN;
+ Ucs2StrIndex ++;
+ } else {
+
+ StrCpyS (Ucs2StrTemp + Ucs2StrIndex, 3, L"\\u");
+
+ Ucs2StrIndex += 2;
+ Utf8StrIndex += 2;
+ }
+ } else {
+
+ Utf8BufferSize = GetUTF8SizeForUCS2 (Utf8Str + Utf8StrIndex);
+ if (Utf8BufferSize == 0 || Utf8StrLength - Utf8StrIndex < Utf8BufferSize) {
+
+ FreePool (Ucs2StrTemp);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = UTF8ToUCS2Char (Utf8Str + Utf8StrIndex, Ucs2StrTemp + Ucs2StrIndex);
+ if (EFI_ERROR (Status)) {
+
+ FreePool (Ucs2StrTemp);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Ucs2StrIndex ++;
+ Utf8StrIndex += Utf8BufferSize;
+ }
+ }
+
+ *Ucs2StrAddr = AllocateZeroPool ((Ucs2StrIndex + 1) * sizeof (CHAR16));
+ if (*Ucs2StrAddr == NULL) {
+
+ FreePool (Ucs2StrTemp);
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ StrCpyS (*Ucs2StrAddr, Ucs2StrIndex + 1, Ucs2StrTemp);
+ *(*Ucs2StrAddr + Ucs2StrIndex) = L'\0';
+ FreePool (Ucs2StrTemp);
+
+ return EFI_SUCCESS;
+}
+
diff --git a/RedfishPkg/Library/JsonLib/JsonUtilities.h b/RedfishPkg/Library/JsonLib/JsonUtilities.h
new file mode 100644
index 0000000000..1aaa4d31e2
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/JsonUtilities.h
@@ -0,0 +1,69 @@
+/** @file
+ Utility functions for JSON operations.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef JSON_UTILITIES_H_
+#define JSON_UTILITIES_H_
+
+#include <Base.h>
+#include <Uefi.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PrintLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include "jansson.h"
+
+#define JSON_UNICODE_FORMAT_LEN 6 /// L"\u0000"
+#define JSON_UNICODE_FORMAT_SIZE 7
+
+#define JSON_UNICODE_FORMAT_CHAR_LEN 2
+#define JSON_UNICODE_FORMAT_CHAR_SIZE 3
+
+#define UTF8_BUFFER_FOR_UCS2_MAX_SIZE 3
+
+/**
+ Convert a UCS2 string to a UTF8 encoded string.
+
+ @param[in] Ucs2Str The provided UCS2 string.
+ @param[out] Utf8StrAddr The converted UTF8 string address. Caller
+ is responsible for Free this string.
+
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+ @retval EFI_OUT_OF_RESOURCES System runs out of resources.
+ @retval EFI_SUCCESS The UTF8 encoded string has been converted.
+
+**/
+EFI_STATUS
+UCS2StrToUTF8 (
+ IN CHAR16 *Ucs2Str,
+ OUT CHAR8 **Utf8StrAddr
+ );
+
+/**
+ Convert a UTF8 encoded string to a UCS2 string.
+
+ @param[in] Utf8Str The provided UTF8 encoded string.
+ @param[out] Ucs2StrAddr The converted UCS2 string address. Caller
+ is responsible for Free this string.
+
+ @retval EFI_INVALID_PARAMETER The UTF8 encoded string is not valid to
+ convert to UCS2 string.
+ One or more parameters are invalid.
+ @retval EFI_OUT_OF_RESOURCES System runs out of resources.
+ @retval EFI_SUCCESS The UCS2 string has been converted.
+
+**/
+EFI_STATUS
+UTF8StrToUCS2 (
+ IN CHAR8 *Utf8Str,
+ OUT CHAR16 **Ucs2StrAddr
+ );
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/Readme.txt b/RedfishPkg/Library/JsonLib/Readme.txt
new file mode 100644
index 0000000000..cc149196b9
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/Readme.txt
@@ -0,0 +1,40 @@
+=============================================================================
+ Introduction
+=============================================================================
+ Jansson is a C library for encoding, decoding and manipulating JSON data.
+Its main features and design principles are:
+
+ - Simple and intuitive API and data model
+ - Comprehensive documentation
+ - No dependencies on other libraries
+ - Full Unicode support (UTF-8)
+ - Extensive test suite
+
+ Jansson is licensed under the MIT license(refer to ReadMe.rst under edk2).
+It is used in production and its API is stable. It works on numerous
+platforms, including numerous Unix like systems and Windows. It's suitable
+for use on any system, including desktop, server, and small embedded systems.
+
+ In UEFI/EDKII environment, Redfish project consumes jansson to achieve JSON
+operations.
+
+* Jansson version on edk2: 2.13.1
+
+* EDKII jansson library wrapper:
+ - JsonLib.h:
+ This is the denifitions of EDKII JSON APIs which are mapped to
+ jannson funcitons accordingly.
+
+ - JanssonJsonLibMapping.h:
+ This is the wrapper to map funcitons and definitions used in
+ native jannson applications to edk2 JsonLib. This avoids the
+ modifications on native jannson applications to be built under
+ edk2 environment.
+
+*Known issue:
+ Build fail with jansson/src/load.c, add code in load.c to conditionally
+ use stdin according to HAVE_UNISTD_H macro. The PR is submitted to
+ jansson open source community.
+ https://github.com/akheron/jansson/pull/558
+
+
diff --git a/RedfishPkg/Library/JsonLib/assert.h b/RedfishPkg/Library/JsonLib/assert.h
new file mode 100644
index 0000000000..8f9eb748e4
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/assert.h
@@ -0,0 +1,16 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef JANSSON_CRT_ASSERT_H_
+#define JANSSON_CRT_ASSERT_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/errno.h b/RedfishPkg/Library/JsonLib/errno.h
new file mode 100644
index 0000000000..b1191b225a
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/errno.h
@@ -0,0 +1,16 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef JANSSON_CRT_ERRNO_H_
+#define JANSSON_CRT_ERRNO_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/jansson_config.h b/RedfishPkg/Library/JsonLib/jansson_config.h
new file mode 100644
index 0000000000..6b154289df
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/jansson_config.h
@@ -0,0 +1,60 @@
+/** @file
+ * Copyright (c) 2010-2016 Petri Lehtinen <petri@digip.org>
+ *
+ * Jansson is free software; you can redistribute it and/or modify
+ * it under the terms of the MIT license. See LICENSE for details.
+ *
+ *
+ * This file specifies a part of the site-specific configuration for
+ * Jansson, namely those things that affect the public API in
+ * jansson.h.
+ *
+ * The configure script copies this file to jansson_config.h and
+ * replaces @var@ substitutions by values that fit your system. If you
+ * cannot run the configure script, you can do the value substitution
+ * by hand.
+
+ jansson open source license,
+ https://github.com/akheron/jansson/blob/master/LICENSE
+
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+ **/
+
+#ifndef JANSSON_CONFIG_H_
+#define JANSSON_CONFIG_H_
+
+/* If your compiler supports the inline keyword in C, JSON_INLINE is
+ defined to `inline', otherwise empty. In C++, the inline is always
+ supported. */
+#ifdef __cplusplus
+#define JSON_INLINE inline
+#else
+#define JSON_INLINE
+#endif
+
+/* If your compiler supports the `long long` type and the strtoll()
+ library function, JSON_INTEGER_IS_LONG_LONG is defined to 1,
+ otherwise to 0. */
+#define JSON_INTEGER_IS_LONG_LONG 1
+
+/* If locale.h and localeconv() are available, define to 1,
+ otherwise to 0. */
+#define JSON_HAVE_LOCALECONV 0
+
+/* If __atomic builtins are available they will be used to manage
+ reference counts of json_t. */
+#define JSON_HAVE_ATOMIC_BUILTINS 0
+
+/* If __atomic builtins are not available we try using __sync builtins
+ to manage reference counts of json_t. */
+#define JSON_HAVE_SYNC_BUILTINS 0
+
+/* Maximum recursion depth for parsing JSON input.
+ This limits the depth of e.g. array-within-array constructions. */
+#define JSON_PARSER_MAX_DEPTH 2048
+
+#define SUPPORT_JANSSON_JSON_REAL 1
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/jansson_private_config.h b/RedfishPkg/Library/JsonLib/jansson_private_config.h
new file mode 100644
index 0000000000..268f91ef8a
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/jansson_private_config.h
@@ -0,0 +1,19 @@
+/** @file
+ Jansson private configurations for UEFI support.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef JANSSON_PRIVATE_CONFIG_H_
+#define JANSSON_PRIVATE_CONFIG_H_
+
+#define HAVE_SYS_TIME_H 1
+#define HAVE_SYS_TYPES_H 1
+
+#define INITIAL_HASHTABLE_ORDER 3
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/limits.h b/RedfishPkg/Library/JsonLib/limits.h
new file mode 100644
index 0000000000..1a544adece
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/limits.h
@@ -0,0 +1,16 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef JANSSON_CRT_LIMITS_H_
+#define JANSSON_CRT_LIMITS_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/load.c b/RedfishPkg/Library/JsonLib/load.c
new file mode 100644
index 0000000000..92063e63cb
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/load.c
@@ -0,0 +1,1111 @@
+/*
+ * Copyright (c) 2009-2016 Petri Lehtinen <petri@digip.org>
+ *
+ * Jansson is free software; you can redistribute it and/or modify
+ * it under the terms of the MIT license. See LICENSE for details.
+
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include "jansson_private.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "jansson.h"
+#include "strbuffer.h"
+#include "utf.h"
+
+#define STREAM_STATE_OK 0
+#define STREAM_STATE_EOF -1
+#define STREAM_STATE_ERROR -2
+
+#define TOKEN_INVALID -1
+#define TOKEN_EOF 0
+#define TOKEN_STRING 256
+#define TOKEN_INTEGER 257
+#define TOKEN_REAL 258
+#define TOKEN_TRUE 259
+#define TOKEN_FALSE 260
+#define TOKEN_NULL 261
+
+/* Locale independent versions of isxxx() functions */
+#define l_isupper(c) ('A' <= (c) && (c) <= 'Z')
+#define l_islower(c) ('a' <= (c) && (c) <= 'z')
+#define l_isalpha(c) (l_isupper(c) || l_islower(c))
+#define l_isdigit(c) ('0' <= (c) && (c) <= '9')
+#define l_isxdigit(c) \
+ (l_isdigit(c) || ('A' <= (c) && (c) <= 'F') || ('a' <= (c) && (c) <= 'f'))
+
+/* Read one byte from stream, convert to unsigned char, then int, and
+ return. return EOF on end of file. This corresponds to the
+ behaviour of fgetc(). */
+typedef int (*get_func)(void *data);
+
+typedef struct {
+ get_func get;
+ void *data;
+ char buffer[5];
+ size_t buffer_pos;
+ int state;
+ int line;
+ int column, last_column;
+ size_t position;
+} stream_t;
+
+typedef struct {
+ stream_t stream;
+ strbuffer_t saved_text;
+ size_t flags;
+ size_t depth;
+ int token;
+ union {
+ struct {
+ char *val;
+ size_t len;
+ } string;
+ json_int_t integer;
+ double real;
+ } value;
+} lex_t;
+
+#define stream_to_lex(stream) container_of(stream, lex_t, stream)
+
+/*** error reporting ***/
+
+static void error_set(json_error_t *error, const lex_t *lex, enum json_error_code code,
+ const char *msg, ...) {
+ va_list ap;
+ char msg_text[JSON_ERROR_TEXT_LENGTH];
+ char msg_with_context[JSON_ERROR_TEXT_LENGTH];
+
+ int line = -1, col = -1;
+ size_t pos = 0;
+ const char *result = msg_text;
+
+ if (!error)
+ return;
+
+ va_start(ap, msg);
+ vsnprintf(msg_text, JSON_ERROR_TEXT_LENGTH, msg, ap);
+ msg_text[JSON_ERROR_TEXT_LENGTH - 1] = '\0';
+ va_end(ap);
+
+ if (lex) {
+ const char *saved_text = strbuffer_value(&lex->saved_text);
+
+ line = lex->stream.line;
+ col = lex->stream.column;
+ pos = lex->stream.position;
+
+ if (saved_text && saved_text[0]) {
+ if (lex->saved_text.length <= 20) {
+ snprintf(msg_with_context, JSON_ERROR_TEXT_LENGTH, "%s near '%s'",
+ msg_text, saved_text);
+ msg_with_context[JSON_ERROR_TEXT_LENGTH - 1] = '\0';
+ result = msg_with_context;
+ }
+ } else {
+ if (code == json_error_invalid_syntax) {
+ /* More specific error code for premature end of file. */
+ code = json_error_premature_end_of_input;
+ }
+ if (lex->stream.state == STREAM_STATE_ERROR) {
+ /* No context for UTF-8 decoding errors */
+ result = msg_text;
+ } else {
+ snprintf(msg_with_context, JSON_ERROR_TEXT_LENGTH, "%s near end of file",
+ msg_text);
+ msg_with_context[JSON_ERROR_TEXT_LENGTH - 1] = '\0';
+ result = msg_with_context;
+ }
+ }
+ }
+
+ jsonp_error_set(error, line, col, pos, code, "%s", result);
+}
+
+/*** lexical analyzer ***/
+
+static void stream_init(stream_t *stream, get_func get, void *data) {
+ stream->get = get;
+ stream->data = data;
+ stream->buffer[0] = '\0';
+ stream->buffer_pos = 0;
+
+ stream->state = STREAM_STATE_OK;
+ stream->line = 1;
+ stream->column = 0;
+ stream->position = 0;
+}
+
+static int stream_get(stream_t *stream, json_error_t *error) {
+ int c;
+
+ if (stream->state != STREAM_STATE_OK)
+ return stream->state;
+
+ if (!stream->buffer[stream->buffer_pos]) {
+ c = stream->get(stream->data);
+ if (c == EOF) {
+ stream->state = STREAM_STATE_EOF;
+ return STREAM_STATE_EOF;
+ }
+
+ stream->buffer[0] = c;
+ stream->buffer_pos = 0;
+
+ if (0x80 <= c && c <= 0xFF) {
+ /* multi-byte UTF-8 sequence */
+ size_t i, count;
+
+ count = utf8_check_first(c);
+ if (!count)
+ goto out;
+
+ assert(count >= 2);
+
+ for (i = 1; i < count; i++)
+ stream->buffer[i] = stream->get(stream->data);
+
+ if (!utf8_check_full(stream->buffer, count, NULL))
+ goto out;
+
+ stream->buffer[count] = '\0';
+ } else
+ stream->buffer[1] = '\0';
+ }
+
+ c = stream->buffer[stream->buffer_pos++];
+
+ stream->position++;
+ if (c == '\n') {
+ stream->line++;
+ stream->last_column = stream->column;
+ stream->column = 0;
+ } else if (utf8_check_first(c)) {
+ /* track the Unicode character column, so increment only if
+ this is the first character of a UTF-8 sequence */
+ stream->column++;
+ }
+
+ return c;
+
+out:
+ stream->state = STREAM_STATE_ERROR;
+ error_set(error, stream_to_lex(stream), json_error_invalid_utf8,
+ "unable to decode byte 0x%x", c);
+ return STREAM_STATE_ERROR;
+}
+
+static void stream_unget(stream_t *stream, int c) {
+ if (c == STREAM_STATE_EOF || c == STREAM_STATE_ERROR)
+ return;
+
+ stream->position--;
+ if (c == '\n') {
+ stream->line--;
+ stream->column = stream->last_column;
+ } else if (utf8_check_first(c))
+ stream->column--;
+
+ assert(stream->buffer_pos > 0);
+ stream->buffer_pos--;
+ assert(stream->buffer[stream->buffer_pos] == c);
+}
+
+static int lex_get(lex_t *lex, json_error_t *error) {
+ return stream_get(&lex->stream, error);
+}
+
+static void lex_save(lex_t *lex, int c) { strbuffer_append_byte(&lex->saved_text, c); }
+
+static int lex_get_save(lex_t *lex, json_error_t *error) {
+ int c = stream_get(&lex->stream, error);
+ if (c != STREAM_STATE_EOF && c != STREAM_STATE_ERROR)
+ lex_save(lex, c);
+ return c;
+}
+
+static void lex_unget(lex_t *lex, int c) { stream_unget(&lex->stream, c); }
+
+static void lex_unget_unsave(lex_t *lex, int c) {
+ if (c != STREAM_STATE_EOF && c != STREAM_STATE_ERROR) {
+/* Since we treat warnings as errors, when assertions are turned
+ * off the "d" variable would be set but never used. Which is
+ * treated as an error by GCC.
+ */
+#ifndef NDEBUG
+ char d;
+#endif
+ stream_unget(&lex->stream, c);
+#ifndef NDEBUG
+ d =
+#endif
+ strbuffer_pop(&lex->saved_text);
+ assert(c == d);
+ }
+}
+
+static void lex_save_cached(lex_t *lex) {
+ while (lex->stream.buffer[lex->stream.buffer_pos] != '\0') {
+ lex_save(lex, lex->stream.buffer[lex->stream.buffer_pos]);
+ lex->stream.buffer_pos++;
+ lex->stream.position++;
+ }
+}
+
+static void lex_free_string(lex_t *lex) {
+ jsonp_free(lex->value.string.val);
+ lex->value.string.val = NULL;
+ lex->value.string.len = 0;
+}
+
+/* assumes that str points to 'u' plus at least 4 valid hex digits */
+static int32_t decode_unicode_escape(const char *str) {
+ int i;
+ int32_t value = 0;
+
+ assert(str[0] == 'u');
+
+ for (i = 1; i <= 4; i++) {
+ char c = str[i];
+ value <<= 4;
+ if (l_isdigit(c))
+ value += c - '0';
+ else if (l_islower(c))
+ value += c - 'a' + 10;
+ else if (l_isupper(c))
+ value += c - 'A' + 10;
+ else
+ return -1;
+ }
+
+ return value;
+}
+
+static void lex_scan_string(lex_t *lex, json_error_t *error) {
+ int c;
+ const char *p;
+ char *t;
+ int i;
+
+ lex->value.string.val = NULL;
+ lex->token = TOKEN_INVALID;
+
+ c = lex_get_save(lex, error);
+
+ while (c != '"') {
+ if (c == STREAM_STATE_ERROR)
+ goto out;
+
+ else if (c == STREAM_STATE_EOF) {
+ error_set(error, lex, json_error_premature_end_of_input,
+ "premature end of input");
+ goto out;
+ }
+
+ else if (0 <= c && c <= 0x1F) {
+ /* control character */
+ lex_unget_unsave(lex, c);
+ if (c == '\n')
+ error_set(error, lex, json_error_invalid_syntax, "unexpected newline");
+ else
+ error_set(error, lex, json_error_invalid_syntax, "control character 0x%x",
+ c);
+ goto out;
+ }
+
+ else if (c == '\\') {
+ c = lex_get_save(lex, error);
+ if (c == 'u') {
+ c = lex_get_save(lex, error);
+ for (i = 0; i < 4; i++) {
+ if (!l_isxdigit(c)) {
+ error_set(error, lex, json_error_invalid_syntax,
+ "invalid escape");
+ goto out;
+ }
+ c = lex_get_save(lex, error);
+ }
+ } else if (c == '"' || c == '\\' || c == '/' || c == 'b' || c == 'f' ||
+ c == 'n' || c == 'r' || c == 't')
+ c = lex_get_save(lex, error);
+ else {
+ error_set(error, lex, json_error_invalid_syntax, "invalid escape");
+ goto out;
+ }
+ } else
+ c = lex_get_save(lex, error);
+ }
+
+ /* the actual value is at most of the same length as the source
+ string, because:
+ - shortcut escapes (e.g. "\t") (length 2) are converted to 1 byte
+ - a single \uXXXX escape (length 6) is converted to at most 3 bytes
+ - two \uXXXX escapes (length 12) forming an UTF-16 surrogate pair
+ are converted to 4 bytes
+ */
+ t = jsonp_malloc(lex->saved_text.length + 1);
+ if (!t) {
+ /* this is not very nice, since TOKEN_INVALID is returned */
+ goto out;
+ }
+ lex->value.string.val = t;
+
+ /* + 1 to skip the " */
+ p = strbuffer_value(&lex->saved_text) + 1;
+
+ while (*p != '"') {
+ if (*p == '\\') {
+ p++;
+ if (*p == 'u') {
+ size_t length;
+ int32_t value;
+
+ value = decode_unicode_escape(p);
+ if (value < 0) {
+ error_set(error, lex, json_error_invalid_syntax,
+ "invalid Unicode escape '%.6s'", p - 1);
+ goto out;
+ }
+ p += 5;
+
+ if (0xD800 <= value && value <= 0xDBFF) {
+ /* surrogate pair */
+ if (*p == '\\' && *(p + 1) == 'u') {
+ int32_t value2 = decode_unicode_escape(++p);
+ if (value2 < 0) {
+ error_set(error, lex, json_error_invalid_syntax,
+ "invalid Unicode escape '%.6s'", p - 1);
+ goto out;
+ }
+ p += 5;
+
+ if (0xDC00 <= value2 && value2 <= 0xDFFF) {
+ /* valid second surrogate */
+ value =
+ ((value - 0xD800) << 10) + (value2 - 0xDC00) + 0x10000;
+ } else {
+ /* invalid second surrogate */
+ error_set(error, lex, json_error_invalid_syntax,
+ "invalid Unicode '\\u%04X\\u%04X'", value, value2);
+ goto out;
+ }
+ } else {
+ /* no second surrogate */
+ error_set(error, lex, json_error_invalid_syntax,
+ "invalid Unicode '\\u%04X'", value);
+ goto out;
+ }
+ } else if (0xDC00 <= value && value <= 0xDFFF) {
+ error_set(error, lex, json_error_invalid_syntax,
+ "invalid Unicode '\\u%04X'", value);
+ goto out;
+ }
+
+ if (utf8_encode(value, t, &length))
+ assert(0);
+ t += length;
+ } else {
+ switch (*p) {
+ case '"':
+ case '\\':
+ case '/':
+ *t = *p;
+ break;
+ case 'b':
+ *t = '\b';
+ break;
+ case 'f':
+ *t = '\f';
+ break;
+ case 'n':
+ *t = '\n';
+ break;
+ case 'r':
+ *t = '\r';
+ break;
+ case 't':
+ *t = '\t';
+ break;
+ default:
+ assert(0);
+ }
+ t++;
+ p++;
+ }
+ } else
+ *(t++) = *(p++);
+ }
+ *t = '\0';
+ lex->value.string.len = t - lex->value.string.val;
+ lex->token = TOKEN_STRING;
+ return;
+
+out:
+ lex_free_string(lex);
+}
+
+#ifndef JANSSON_USING_CMAKE /* disabled if using cmake */
+#if JSON_INTEGER_IS_LONG_LONG
+#ifdef _MSC_VER /* Microsoft Visual Studio */
+#define json_strtoint _strtoi64
+#else
+#define json_strtoint strtoll
+#endif
+#else
+#define json_strtoint strtol
+#endif
+#endif
+
+static int lex_scan_number(lex_t *lex, int c, json_error_t *error) {
+ const char *saved_text;
+ char *end;
+ double doubleval;
+
+ lex->token = TOKEN_INVALID;
+
+ if (c == '-')
+ c = lex_get_save(lex, error);
+
+ if (c == '0') {
+ c = lex_get_save(lex, error);
+ if (l_isdigit(c)) {
+ lex_unget_unsave(lex, c);
+ goto out;
+ }
+ } else if (l_isdigit(c)) {
+ do
+ c = lex_get_save(lex, error);
+ while (l_isdigit(c));
+ } else {
+ lex_unget_unsave(lex, c);
+ goto out;
+ }
+
+ if (!(lex->flags & JSON_DECODE_INT_AS_REAL) && c != '.' && c != 'E' && c != 'e') {
+ json_int_t intval;
+
+ lex_unget_unsave(lex, c);
+
+ saved_text = strbuffer_value(&lex->saved_text);
+
+ errno = 0;
+ intval = json_strtoint(saved_text, &end, 10);
+ if (errno == ERANGE) {
+ if (intval < 0)
+ error_set(error, lex, json_error_numeric_overflow,
+ "too big negative integer");
+ else
+ error_set(error, lex, json_error_numeric_overflow, "too big integer");
+ goto out;
+ }
+
+ assert(end == saved_text + lex->saved_text.length);
+
+ lex->token = TOKEN_INTEGER;
+ lex->value.integer = intval;
+ return 0;
+ }
+
+ if (c == '.') {
+ c = lex_get(lex, error);
+ if (!l_isdigit(c)) {
+ lex_unget(lex, c);
+ goto out;
+ }
+ lex_save(lex, c);
+
+ do
+ c = lex_get_save(lex, error);
+ while (l_isdigit(c));
+ }
+
+ if (c == 'E' || c == 'e') {
+ c = lex_get_save(lex, error);
+ if (c == '+' || c == '-')
+ c = lex_get_save(lex, error);
+
+ if (!l_isdigit(c)) {
+ lex_unget_unsave(lex, c);
+ goto out;
+ }
+
+ do
+ c = lex_get_save(lex, error);
+ while (l_isdigit(c));
+ }
+
+ lex_unget_unsave(lex, c);
+
+ if (jsonp_strtod(&lex->saved_text, &doubleval)) {
+ error_set(error, lex, json_error_numeric_overflow, "real number overflow");
+ goto out;
+ }
+
+ lex->token = TOKEN_REAL;
+ lex->value.real = doubleval;
+ return 0;
+
+out:
+ return -1;
+}
+
+static int lex_scan(lex_t *lex, json_error_t *error) {
+ int c;
+
+ strbuffer_clear(&lex->saved_text);
+
+ if (lex->token == TOKEN_STRING)
+ lex_free_string(lex);
+
+ do
+ c = lex_get(lex, error);
+ while (c == ' ' || c == '\t' || c == '\n' || c == '\r');
+
+ if (c == STREAM_STATE_EOF) {
+ lex->token = TOKEN_EOF;
+ goto out;
+ }
+
+ if (c == STREAM_STATE_ERROR) {
+ lex->token = TOKEN_INVALID;
+ goto out;
+ }
+
+ lex_save(lex, c);
+
+ if (c == '{' || c == '}' || c == '[' || c == ']' || c == ':' || c == ',')
+ lex->token = c;
+
+ else if (c == '"')
+ lex_scan_string(lex, error);
+
+ else if (l_isdigit(c) || c == '-') {
+ if (lex_scan_number(lex, c, error))
+ goto out;
+ }
+
+ else if (l_isalpha(c)) {
+ /* eat up the whole identifier for clearer error messages */
+ const char *saved_text;
+
+ do
+ c = lex_get_save(lex, error);
+ while (l_isalpha(c));
+ lex_unget_unsave(lex, c);
+
+ saved_text = strbuffer_value(&lex->saved_text);
+
+ if (strcmp(saved_text, "true") == 0)
+ lex->token = TOKEN_TRUE;
+ else if (strcmp(saved_text, "false") == 0)
+ lex->token = TOKEN_FALSE;
+ else if (strcmp(saved_text, "null") == 0)
+ lex->token = TOKEN_NULL;
+ else
+ lex->token = TOKEN_INVALID;
+ }
+
+ else {
+ /* save the rest of the input UTF-8 sequence to get an error
+ message of valid UTF-8 */
+ lex_save_cached(lex);
+ lex->token = TOKEN_INVALID;
+ }
+
+out:
+ return lex->token;
+}
+
+static char *lex_steal_string(lex_t *lex, size_t *out_len) {
+ char *result = NULL;
+ if (lex->token == TOKEN_STRING) {
+ result = lex->value.string.val;
+ *out_len = lex->value.string.len;
+ lex->value.string.val = NULL;
+ lex->value.string.len = 0;
+ }
+ return result;
+}
+
+static int lex_init(lex_t *lex, get_func get, size_t flags, void *data) {
+ stream_init(&lex->stream, get, data);
+ if (strbuffer_init(&lex->saved_text))
+ return -1;
+
+ lex->flags = flags;
+ lex->token = TOKEN_INVALID;
+ return 0;
+}
+
+static void lex_close(lex_t *lex) {
+ if (lex->token == TOKEN_STRING)
+ lex_free_string(lex);
+ strbuffer_close(&lex->saved_text);
+}
+
+/*** parser ***/
+
+static json_t *parse_value(lex_t *lex, size_t flags, json_error_t *error);
+
+static json_t *parse_object(lex_t *lex, size_t flags, json_error_t *error) {
+ json_t *object = json_object();
+ if (!object)
+ return NULL;
+
+ lex_scan(lex, error);
+ if (lex->token == '}')
+ return object;
+
+ while (1) {
+ char *key;
+ size_t len;
+ json_t *value;
+
+ if (lex->token != TOKEN_STRING) {
+ error_set(error, lex, json_error_invalid_syntax, "string or '}' expected");
+ goto error;
+ }
+
+ key = lex_steal_string(lex, &len);
+ if (!key)
+ return NULL;
+ if (memchr(key, '\0', len)) {
+ jsonp_free(key);
+ error_set(error, lex, json_error_null_byte_in_key,
+ "NUL byte in object key not supported");
+ goto error;
+ }
+
+ if (flags & JSON_REJECT_DUPLICATES) {
+ if (json_object_get(object, key)) {
+ jsonp_free(key);
+ error_set(error, lex, json_error_duplicate_key, "duplicate object key");
+ goto error;
+ }
+ }
+
+ lex_scan(lex, error);
+ if (lex->token != ':') {
+ jsonp_free(key);
+ error_set(error, lex, json_error_invalid_syntax, "':' expected");
+ goto error;
+ }
+
+ lex_scan(lex, error);
+ value = parse_value(lex, flags, error);
+ if (!value) {
+ jsonp_free(key);
+ goto error;
+ }
+
+ if (json_object_set_new_nocheck(object, key, value)) {
+ jsonp_free(key);
+ goto error;
+ }
+
+ jsonp_free(key);
+
+ lex_scan(lex, error);
+ if (lex->token != ',')
+ break;
+
+ lex_scan(lex, error);
+ }
+
+ if (lex->token != '}') {
+ error_set(error, lex, json_error_invalid_syntax, "'}' expected");
+ goto error;
+ }
+
+ return object;
+
+error:
+ json_decref(object);
+ return NULL;
+}
+
+static json_t *parse_array(lex_t *lex, size_t flags, json_error_t *error) {
+ json_t *array = json_array();
+ if (!array)
+ return NULL;
+
+ lex_scan(lex, error);
+ if (lex->token == ']')
+ return array;
+
+ while (lex->token) {
+ json_t *elem = parse_value(lex, flags, error);
+ if (!elem)
+ goto error;
+
+ if (json_array_append_new(array, elem)) {
+ goto error;
+ }
+
+ lex_scan(lex, error);
+ if (lex->token != ',')
+ break;
+
+ lex_scan(lex, error);
+ }
+
+ if (lex->token != ']') {
+ error_set(error, lex, json_error_invalid_syntax, "']' expected");
+ goto error;
+ }
+
+ return array;
+
+error:
+ json_decref(array);
+ return NULL;
+}
+
+static json_t *parse_value(lex_t *lex, size_t flags, json_error_t *error) {
+ json_t *json;
+
+ lex->depth++;
+ if (lex->depth > JSON_PARSER_MAX_DEPTH) {
+ error_set(error, lex, json_error_stack_overflow, "maximum parsing depth reached");
+ return NULL;
+ }
+
+ switch (lex->token) {
+ case TOKEN_STRING: {
+ const char *value = lex->value.string.val;
+ size_t len = lex->value.string.len;
+
+ if (!(flags & JSON_ALLOW_NUL)) {
+ if (memchr(value, '\0', len)) {
+ error_set(error, lex, json_error_null_character,
+ "\\u0000 is not allowed without JSON_ALLOW_NUL");
+ return NULL;
+ }
+ }
+
+ json = jsonp_stringn_nocheck_own(value, len);
+ lex->value.string.val = NULL;
+ lex->value.string.len = 0;
+ break;
+ }
+
+ case TOKEN_INTEGER: {
+ json = json_integer(lex->value.integer);
+ break;
+ }
+
+ case TOKEN_REAL: {
+ json = json_real(lex->value.real);
+ break;
+ }
+
+ case TOKEN_TRUE:
+ json = json_true();
+ break;
+
+ case TOKEN_FALSE:
+ json = json_false();
+ break;
+
+ case TOKEN_NULL:
+ json = json_null();
+ break;
+
+ case '{':
+ json = parse_object(lex, flags, error);
+ break;
+
+ case '[':
+ json = parse_array(lex, flags, error);
+ break;
+
+ case TOKEN_INVALID:
+ error_set(error, lex, json_error_invalid_syntax, "invalid token");
+ return NULL;
+
+ default:
+ error_set(error, lex, json_error_invalid_syntax, "unexpected token");
+ return NULL;
+ }
+
+ if (!json)
+ return NULL;
+
+ lex->depth--;
+ return json;
+}
+
+static json_t *parse_json(lex_t *lex, size_t flags, json_error_t *error) {
+ json_t *result;
+
+ lex->depth = 0;
+
+ lex_scan(lex, error);
+ if (!(flags & JSON_DECODE_ANY)) {
+ if (lex->token != '[' && lex->token != '{') {
+ error_set(error, lex, json_error_invalid_syntax, "'[' or '{' expected");
+ return NULL;
+ }
+ }
+
+ result = parse_value(lex, flags, error);
+ if (!result)
+ return NULL;
+
+ if (!(flags & JSON_DISABLE_EOF_CHECK)) {
+ lex_scan(lex, error);
+ if (lex->token != TOKEN_EOF) {
+ error_set(error, lex, json_error_end_of_input_expected,
+ "end of file expected");
+ json_decref(result);
+ return NULL;
+ }
+ }
+
+ if (error) {
+ /* Save the position even though there was no error */
+ error->position = (int)lex->stream.position;
+ }
+
+ return result;
+}
+
+typedef struct {
+ const char *data;
+ size_t pos;
+} string_data_t;
+
+static int string_get(void *data) {
+ char c;
+ string_data_t *stream = (string_data_t *)data;
+ c = stream->data[stream->pos];
+ if (c == '\0')
+ return EOF;
+ else {
+ stream->pos++;
+ return (unsigned char)c;
+ }
+}
+
+json_t *json_loads(const char *string, size_t flags, json_error_t *error) {
+ lex_t lex;
+ json_t *result;
+ string_data_t stream_data;
+
+ jsonp_error_init(error, "<string>");
+
+ if (string == NULL) {
+ error_set(error, NULL, json_error_invalid_argument, "wrong arguments");
+ return NULL;
+ }
+
+ stream_data.data = string;
+ stream_data.pos = 0;
+
+ if (lex_init(&lex, string_get, flags, (void *)&stream_data))
+ return NULL;
+
+ result = parse_json(&lex, flags, error);
+
+ lex_close(&lex);
+ return result;
+}
+
+typedef struct {
+ const char *data;
+ size_t len;
+ size_t pos;
+} buffer_data_t;
+
+static int buffer_get(void *data) {
+ char c;
+ buffer_data_t *stream = data;
+ if (stream->pos >= stream->len)
+ return EOF;
+
+ c = stream->data[stream->pos];
+ stream->pos++;
+ return (unsigned char)c;
+}
+
+json_t *json_loadb(const char *buffer, size_t buflen, size_t flags, json_error_t *error) {
+ lex_t lex;
+ json_t *result;
+ buffer_data_t stream_data;
+
+ jsonp_error_init(error, "<buffer>");
+
+ if (buffer == NULL) {
+ error_set(error, NULL, json_error_invalid_argument, "wrong arguments");
+ return NULL;
+ }
+
+ stream_data.data = buffer;
+ stream_data.pos = 0;
+ stream_data.len = buflen;
+
+ if (lex_init(&lex, buffer_get, flags, (void *)&stream_data))
+ return NULL;
+
+ result = parse_json(&lex, flags, error);
+
+ lex_close(&lex);
+ return result;
+}
+
+json_t *json_loadf(FILE *input, size_t flags, json_error_t *error) {
+ lex_t lex;
+ const char *source;
+ json_t *result;
+#ifdef HAVE_UNISTD_H
+ if (input == stdin)
+ source = "<stdin>";
+ else
+#endif
+ source = "<stream>";
+
+ jsonp_error_init(error, source);
+
+ if (input == NULL) {
+ error_set(error, NULL, json_error_invalid_argument, "wrong arguments");
+ return NULL;
+ }
+
+ if (lex_init(&lex, (get_func)fgetc, flags, input))
+ return NULL;
+
+ result = parse_json(&lex, flags, error);
+
+ lex_close(&lex);
+ return result;
+}
+
+static int fd_get_func(int *fd) {
+#ifdef HAVE_UNISTD_H
+ uint8_t c;
+ if (read(*fd, &c, 1) == 1)
+ return c;
+#endif
+ return EOF;
+}
+
+json_t *json_loadfd(int input, size_t flags, json_error_t *error) {
+ lex_t lex;
+ const char *source;
+ json_t *result;
+
+#ifdef HAVE_UNISTD_H
+ if (input == STDIN_FILENO)
+ source = "<stdin>";
+ else
+#endif
+ source = "<stream>";
+
+ jsonp_error_init(error, source);
+
+ if (input < 0) {
+ error_set(error, NULL, json_error_invalid_argument, "wrong arguments");
+ return NULL;
+ }
+
+ if (lex_init(&lex, (get_func)fd_get_func, flags, &input))
+ return NULL;
+
+ result = parse_json(&lex, flags, error);
+
+ lex_close(&lex);
+ return result;
+}
+
+json_t *json_load_file(const char *path, size_t flags, json_error_t *error) {
+ json_t *result;
+ FILE *fp;
+
+ jsonp_error_init(error, path);
+
+ if (path == NULL) {
+ error_set(error, NULL, json_error_invalid_argument, "wrong arguments");
+ return NULL;
+ }
+
+ fp = fopen(path, "rb");
+ if (!fp) {
+ error_set(error, NULL, json_error_cannot_open_file, "unable to open %s: %s", path,
+ strerror(errno));
+ return NULL;
+ }
+
+ result = json_loadf(fp, flags, error);
+
+ fclose(fp);
+ return result;
+}
+
+#define MAX_BUF_LEN 1024
+
+typedef struct {
+ char data[MAX_BUF_LEN];
+ size_t len;
+ size_t pos;
+ json_load_callback_t callback;
+ void *arg;
+} callback_data_t;
+
+static int callback_get(void *data) {
+ char c;
+ callback_data_t *stream = data;
+
+ if (stream->pos >= stream->len) {
+ stream->pos = 0;
+ stream->len = stream->callback(stream->data, MAX_BUF_LEN, stream->arg);
+ if (stream->len == 0 || stream->len == (size_t)-1)
+ return EOF;
+ }
+
+ c = stream->data[stream->pos];
+ stream->pos++;
+ return (unsigned char)c;
+}
+
+json_t *json_load_callback(json_load_callback_t callback, void *arg, size_t flags,
+ json_error_t *error) {
+ lex_t lex;
+ json_t *result;
+
+ callback_data_t stream_data;
+
+ memset(&stream_data, 0, sizeof(stream_data));
+ stream_data.callback = callback;
+ stream_data.arg = arg;
+
+ jsonp_error_init(error, "<callback>");
+
+ if (callback == NULL) {
+ error_set(error, NULL, json_error_invalid_argument, "wrong arguments");
+ return NULL;
+ }
+
+ if (lex_init(&lex, (get_func)callback_get, flags, &stream_data))
+ return NULL;
+
+ result = parse_json(&lex, flags, error);
+
+ lex_close(&lex);
+ return result;
+}
diff --git a/RedfishPkg/Library/JsonLib/math.h b/RedfishPkg/Library/JsonLib/math.h
new file mode 100644
index 0000000000..9a478c0f8a
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/math.h
@@ -0,0 +1,16 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef JANSSON_CRT_MATH_H_
+#define JANSSON_CRT_MATH_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/stdarg.h b/RedfishPkg/Library/JsonLib/stdarg.h
new file mode 100644
index 0000000000..868fcd5cca
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/stdarg.h
@@ -0,0 +1,15 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef JANSSON_CRT_STDARG_H_
+#define JANSSON_CRT_STDARG_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/stddef.h b/RedfishPkg/Library/JsonLib/stddef.h
new file mode 100644
index 0000000000..8250f280b3
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/stddef.h
@@ -0,0 +1,16 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef JANSSON_CRT_STDDEF_H_
+#define JANSSON_CRT_STDDEF_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/stdio.h b/RedfishPkg/Library/JsonLib/stdio.h
new file mode 100644
index 0000000000..5aa15b969f
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/stdio.h
@@ -0,0 +1,15 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef JANSSON_CRT_STDIO_H_
+#define JANSSON_CRT_STDIO_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/stdlib.h b/RedfishPkg/Library/JsonLib/stdlib.h
new file mode 100644
index 0000000000..dfbfd85655
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/stdlib.h
@@ -0,0 +1,16 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef JANSSON_CRT_STDLIB_H_
+#define JANSSON_CRT_STDLIB_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/string.h b/RedfishPkg/Library/JsonLib/string.h
new file mode 100644
index 0000000000..691de583a3
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/string.h
@@ -0,0 +1,16 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef JANSSON_CRT_STRING_H_
+#define JANSSON_CRT_STRING_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/sys/time.h b/RedfishPkg/Library/JsonLib/sys/time.h
new file mode 100644
index 0000000000..5039c1991c
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/sys/time.h
@@ -0,0 +1,15 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef JANSSON_CRT_SYS_TIME_H_
+#define JANSSON_CRT_SYS_TIME_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/sys/types.h b/RedfishPkg/Library/JsonLib/sys/types.h
new file mode 100644
index 0000000000..f2e23cf82f
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/sys/types.h
@@ -0,0 +1,15 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef JANSSON_CRT_SYS_TYPES_H_
+#define JANSSON_CRT_SYS_TYPES_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/Library/JsonLib/time.h b/RedfishPkg/Library/JsonLib/time.h
new file mode 100644
index 0000000000..dd05279b24
--- /dev/null
+++ b/RedfishPkg/Library/JsonLib/time.h
@@ -0,0 +1,15 @@
+/** @file
+ Include file to support building the third-party jansson library.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef JANSSON_CRT_TIME_H_
+#define JANSSON_CRT_TIME_H_
+
+#include <JanssonCrtLibSupport.h>
+
+#endif
diff --git a/RedfishPkg/RedfishPkg.ci.yaml b/RedfishPkg/RedfishPkg.ci.yaml
index 20c297ad22..78c2814d04 100644
--- a/RedfishPkg/RedfishPkg.ci.yaml
+++ b/RedfishPkg/RedfishPkg.ci.yaml
@@ -17,6 +17,30 @@
],
## Both file path and directory path are accepted.
"IgnoreFiles": [
+ ## Below are files incorporated with open source which are
+ ## not edk2 coding standard compliant.
+ ##
+ ## For jansson library open source
+ ## load.c is overrided from open source.
+ "Library/JsonLib/load.c",
+ ## EDKII JsonLib API to jansson API mapping definitions.
+ "Include/Library/JanssonJsonLibMapping.h",
+ ## C runtime library for EDKII JsonLib.
+ "Library/JsonLib/sys",
+ "Library/JsonLib/JanssonCrtLibSupport.c",
+ "Library/JsonLib/JanssonCrtLibSupport.h",
+ "Library/JsonLib/assert.h",
+ "Library/JsonLib/errno.h",
+ "Library/JsonLib/jansson_config.h",
+ "Library/JsonLib/jansson_private_config.h",
+ "Library/JsonLib/limits.h",
+ "Library/JsonLib/math.h",
+ "Library/JsonLib/stdarg.h",
+ "Library/JsonLib/stddef.h",
+ "Library/JsonLib/stdio.h",
+ "Library/JsonLib/stdlib.h",
+ "Library/JsonLib/string.h",
+ "Library/JsonLib/time.h"
]
},
"CompilerPlugin": {
@@ -50,7 +74,14 @@
"IgnoreFoldersAndFiles": []
},
"LibraryClassCheck": {
- "IgnoreHeaderFile": []
+ "IgnoreHeaderFile": [
+ ## Below header file can be used by open source
+ ## project which uses jansson library. Use this
+ ## header file to map jansson native APIs to
+ ## edk2 JsonLib APIs.This header file doesn't
+ ## have the corresponding library class.
+ "Include/Library/JanssonJsonLibMapping.h"
+ ]
},
## options defined ci/Plugin/SpellCheck
--
2.17.1
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