1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16#ifndef CLEARKEY_JSON_WEB_KEY_H_
17#define CLEARKEY_JSON_WEB_KEY_H_
18
19#include <media/stagefright/foundation/ABase.h>
20#include <utils/KeyedVector.h>
21#include <utils/String8.h>
22#include <utils/StrongPointer.h>
23
24#include "jsmn.h"
25#include "Utils.h"
26#include "ClearKeyTypes.h"
27
28namespace clearkeydrm {
29
30using android::KeyedVector;
31using android::sp;
32using android::String8;
33using android::Vector;
34
35class JsonWebKey {
36 public:
37    JsonWebKey();
38    virtual ~JsonWebKey();
39
40    bool extractKeysFromJsonWebKeySet(const String8& jsonWebKeySet,
41            KeyMap* keys);
42
43 private:
44    Vector<jsmntok_t> mJsmnTokens;
45    Vector<String8> mJsonObjects;
46    Vector<String8> mTokens;
47
48    bool decodeBase64String(const String8& encodedText,
49            Vector<uint8_t>* decodedText);
50    bool findKey(const String8& jsonObject, String8* keyId,
51            String8* encodedKey);
52    void findValue(const String8 &key, String8* value);
53    bool isJsonWebKeySet(const String8& jsonObject) const;
54    bool parseJsonObject(const String8& jsonObject, Vector<String8>* tokens);
55    bool parseJsonWebKeySet(const String8& jsonWebKeySet, Vector<String8>* jsonObjects);
56
57    DISALLOW_EVIL_CONSTRUCTORS(JsonWebKey);
58};
59
60}  // namespace clearkeydrm
61
62#endif  // CLEARKEY_JSON_WEB_KEY_H_
63