1/*
2 * Copyright (C) 2010 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 "NdefRecord"
18
19#include <stdlib.h>
20
21#include "jni.h"
22#include "JNIHelp.h"
23
24#include "android_nfc.h"
25
26#include <utils/Log.h>
27
28namespace android {
29
30static jbyteArray android_nfc_NdefRecord_generate(
31        JNIEnv *e, jobject o, jshort flags, jshort tnf, jbyteArray type,
32        jbyteArray id, jbyteArray payload)
33{
34    uint32_t status;
35    phFriNfc_NdefRecord_t record;
36    uint32_t buf_size;
37    uint32_t record_size;
38    uint8_t *buf = NULL;
39    jbyteArray result = NULL;
40
41    /* Prepare NDEF record structure */
42    record.Flags = (uint8_t)flags;
43    record.Tnf = (uint8_t)tnf;
44    record.TypeLength = (uint32_t)e->GetArrayLength(type);
45    record.Type = (uint8_t *)e->GetByteArrayElements(type, NULL);
46    record.IdLength = (uint32_t)e->GetArrayLength(id);
47    record.Id = (uint8_t *)e->GetByteArrayElements(id, NULL);
48    record.PayloadLength = (uint32_t)e->GetArrayLength(payload);
49    record.PayloadData = (uint8_t *)e->GetByteArrayElements(payload, NULL);
50
51    buf_size = record.PayloadLength + record.IdLength + record.TypeLength + 8;
52
53    buf = (uint8_t*)malloc(buf_size);
54    if (buf == NULL)
55        goto end;
56
57    TRACE("phFriNfc_NdefRecord_Generate()");
58
59    status = phFriNfc_NdefRecord_Generate(&record, buf, buf_size,
60            &record_size);
61
62    if (status) {
63        LOGE("phFriNfc_NdefRecord_Generate() returned 0x%04x", status);
64        goto end;
65    }
66    TRACE("phFriNfc_NdefRecord_Generate() returned 0x%04x", status);
67
68    result = e->NewByteArray(record_size);
69    if (result == NULL)
70        goto end;
71
72    e->SetByteArrayRegion(result, 0, record_size, (jbyte *)buf);
73
74end:
75    e->ReleaseByteArrayElements(type, (jbyte *)record.Type, JNI_ABORT);
76    e->ReleaseByteArrayElements(id, (jbyte *)record.Id, JNI_ABORT);
77    e->ReleaseByteArrayElements(payload, (jbyte *)record.PayloadData, JNI_ABORT);
78
79    if(buf)
80        free(buf);
81
82    return result;
83}
84
85static jint android_nfc_NdefRecord_parseNdefRecord(JNIEnv *e, jobject o,
86        jbyteArray array)
87{
88    uint16_t status;
89    jbyte *raw_record;
90    jsize raw_record_size;
91    jint ret = -1;
92    phFriNfc_NdefRecord_t record;
93
94    jfieldID mType, mId, mPayload, mTnf, mFlags;
95    jbyteArray type = NULL;
96    jbyteArray id = NULL;
97    jbyteArray payload = NULL;
98
99    jclass record_cls = e->GetObjectClass(o);
100
101    raw_record_size = e->GetArrayLength(array);
102    raw_record = e->GetByteArrayElements(array, NULL);
103    if (raw_record == NULL) {
104        goto clean_and_return;
105    }
106
107    TRACE("phFriNfc_NdefRecord_Parse()");
108    status = phFriNfc_NdefRecord_Parse(&record, (uint8_t *)raw_record);
109    if (status) {
110        LOGE("phFriNfc_NdefRecord_Parse() returned 0x%04x", status);
111        goto clean_and_return;
112    }
113    TRACE("phFriNfc_NdefRecord_Parse() returned 0x%04x", status);
114
115    /* Set TNF field */
116    mTnf = e->GetFieldID(record_cls, "mTnf", "S");
117    e->SetShortField(o, mTnf, record.Tnf);
118
119    /* Set type field */
120    mType = e->GetFieldID(record_cls, "mType", "[B");
121    type = e->NewByteArray(record.TypeLength);
122    if (type == NULL) {
123        goto clean_and_return;
124    }
125    e->SetByteArrayRegion(type, 0, record.TypeLength,
126            (jbyte *)record.Type);
127    e->SetObjectField(o, mType, type);
128
129    /* Set id field */
130    mId = e->GetFieldID(record_cls, "mId", "[B");
131    id = e->NewByteArray(record.IdLength);
132    if (id == NULL) {
133        goto clean_and_return;
134    }
135    e->SetByteArrayRegion(id, 0, record.IdLength,
136            (jbyte *)record.Id);
137    e->SetObjectField(o, mId, id);
138
139    /* Set payload field */
140    mPayload = e->GetFieldID(record_cls, "mPayload", "[B");
141    payload = e->NewByteArray(record.PayloadLength);
142    if (payload == NULL) {
143        goto clean_and_return;
144    }
145
146    e->SetByteArrayRegion(payload, 0, record.PayloadLength,
147            (jbyte *)record.PayloadData);
148    e->SetObjectField(o, mPayload, payload);
149
150    /* Set flags field */
151    mFlags = e->GetFieldID(record_cls, "mFlags", "B");
152    e->SetByteField(o, mFlags, record.Flags);
153
154    ret = 0;
155
156clean_and_return:
157    if (type != NULL) {
158        e->DeleteLocalRef(type);
159    }
160    if (id != NULL) {
161        e->DeleteLocalRef(id);
162    }
163    if (payload != NULL) {
164        e->DeleteLocalRef(payload);
165    }
166    if (raw_record != NULL) {
167        e->ReleaseByteArrayElements(array, raw_record, JNI_ABORT);
168    }
169
170    return ret;
171}
172
173static JNINativeMethod gMethods[] = {
174    {"generate", "(SS[B[B[B)[B", (void *)android_nfc_NdefRecord_generate},
175    {"parseNdefRecord", "([B)I", (void *)android_nfc_NdefRecord_parseNdefRecord},
176};
177
178int register_android_nfc_NdefRecord(JNIEnv *e)
179{
180    return jniRegisterNativeMethods(e, "android/nfc/NdefRecord", gMethods, NELEM(gMethods));
181}
182
183} // namespace android
184