1 /*
2 * Copyright (C) 2017 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
17 #define LOG_TAG "LowpanCredential"
18
19 #include <android/net/lowpan/LowpanCredential.h>
20
21 #include <binder/Parcel.h>
22 #include <log/log.h>
23 #include <utils/Errors.h>
24
25 using android::BAD_TYPE;
26 using android::BAD_VALUE;
27 using android::NO_ERROR;
28 using android::Parcel;
29 using android::status_t;
30 using android::UNEXPECTED_NULL;
31 using android::net::lowpan::LowpanCredential;
32 using namespace ::android::binder;
33
34 namespace android {
35
36 namespace net {
37
38 namespace lowpan {
39
40 #define RETURN_IF_FAILED(calledOnce) \
41 { \
42 status_t returnStatus = calledOnce; \
43 if (returnStatus) { \
44 ALOGE("Failed at %s:%d (%s)", __FILE__, __LINE__, __func__); \
45 return returnStatus; \
46 } \
47 }
48
LowpanCredential()49 LowpanCredential::LowpanCredential() : mMasterKeyIndex(UNSPECIFIED_MASTER_KEY_INDEX) { }
50
initMasterKey(LowpanCredential & out,const uint8_t * masterKeyBytes,int masterKeyLen,int masterKeyIndex)51 status_t LowpanCredential::initMasterKey(LowpanCredential& out, const uint8_t* masterKeyBytes, int masterKeyLen, int masterKeyIndex)
52 {
53 if (masterKeyLen < 0) {
54 return BAD_INDEX;
55 } else if (masterKeyLen > MASTER_KEY_MAX_SIZE) {
56 return BAD_INDEX;
57 } else if (masterKeyBytes == NULL) {
58 return BAD_VALUE;
59 }
60
61 out.mMasterKey.clear();
62 out.mMasterKey.insert(out.mMasterKey.end(), masterKeyBytes, masterKeyBytes + masterKeyLen);
63 out.mMasterKeyIndex = masterKeyIndex;
64
65 return NO_ERROR;
66 }
67
initMasterKey(LowpanCredential & out,const uint8_t * masterKeyBytes,int masterKeyLen)68 status_t LowpanCredential::initMasterKey(LowpanCredential& out, const uint8_t* masterKeyBytes, int masterKeyLen)
69 {
70 return LowpanCredential::initMasterKey(out, masterKeyBytes, masterKeyLen, 0);
71 }
72
initMasterKey(LowpanCredential & out,const std::vector<uint8_t> & masterKey,int masterKeyIndex)73 status_t LowpanCredential::initMasterKey(LowpanCredential& out, const std::vector<uint8_t>& masterKey, int masterKeyIndex)
74 {
75 return LowpanCredential::initMasterKey(out, &masterKey.front(), masterKey.size(), masterKeyIndex);
76 }
77
initMasterKey(LowpanCredential & out,const std::vector<uint8_t> & masterKey)78 status_t LowpanCredential::initMasterKey(LowpanCredential& out, const std::vector<uint8_t>& masterKey)
79 {
80 return LowpanCredential::initMasterKey(out, masterKey, 0);
81 }
82
isMasterKey() const83 bool LowpanCredential::isMasterKey() const {
84 return mMasterKey.size() > 0;
85 }
86
getMasterKey(std::vector<uint8_t> * masterKey) const87 bool LowpanCredential::getMasterKey(std::vector<uint8_t>* masterKey) const {
88 if (isMasterKey()) {
89 *masterKey = mMasterKey;
90 return true;
91 }
92 return false;
93 }
94
getMasterKey(const uint8_t ** masterKey,int * masterKeyLen) const95 bool LowpanCredential::getMasterKey(const uint8_t** masterKey, int* masterKeyLen) const {
96 if (isMasterKey()) {
97 if (masterKey) {
98 *masterKey = &mMasterKey.front();
99 }
100 if (masterKeyLen) {
101 *masterKeyLen = mMasterKey.size();
102 }
103 return true;
104 }
105 return false;
106 }
107
getMasterKeyIndex() const108 int LowpanCredential::getMasterKeyIndex() const {
109 return mMasterKeyIndex;
110 }
111
writeToParcel(Parcel * parcel) const112 status_t LowpanCredential::writeToParcel(Parcel* parcel) const {
113 /*
114 * Keep implementation in sync with writeToParcel() in
115 * frameworks/base/lowpan/java/android/net/android/net/lowpan/LowpanCredential.java.
116 */
117 RETURN_IF_FAILED(parcel->writeByteVector(mMasterKey));
118 RETURN_IF_FAILED(parcel->writeInt32(mMasterKeyIndex));
119 return NO_ERROR;
120 }
121
readFromParcel(const Parcel * parcel)122 status_t LowpanCredential::readFromParcel(const Parcel* parcel) {
123 /*
124 * Keep implementation in sync with readFromParcel() in
125 * frameworks/base/lowpan/java/android/net/android/net/lowpan/LowpanCredential.java.
126 */
127 RETURN_IF_FAILED(parcel->readByteVector(&mMasterKey));
128 RETURN_IF_FAILED(parcel->readInt32(&mMasterKeyIndex));
129 return NO_ERROR;
130 }
131
operator ==(const LowpanCredential & rhs)132 bool LowpanCredential::operator==(const LowpanCredential& rhs)
133 {
134 if (mMasterKey != rhs.mMasterKey) {
135 return false;
136 }
137
138 if (mMasterKeyIndex != rhs.mMasterKeyIndex) {
139 return false;
140 }
141
142 return true;
143 }
144
145 } // namespace lowpan
146
147 } // namespace net
148
149 } // namespace android
150