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