NFC: Move NFC service implementation out of system_server.

NFC service is now an application service in packages/apps/Nfc.

NFC service is registered through ServiceManager.addService(), and the proxy
object NfcAdapter obtains a handle to it through ServiceManager.getService().

**Important** Had to add new symbols AID_NFC / NFC_UID / android.uid.nfc and
modify service_manager.c, Process.java and PackageManagerService.java in order
to force the com.android.nfc process to take a fixed uid, so that it can use
ServiceManager.addService().

Most of the JNI has moved to packages/apps/Nfc/jni. However NdefRecord and
NdefMessage require some in-process native code, so android_com_NdefMessage.cpp
and android_com_NdefRecord.cpp stay in frameworks/base/core/jni. They link to
a very small library libnfc_ndef.so that implements NDEF message parsing. This
has been added to core.mk so all devices (even without NFC hardware) can work
with NDEF data.

Bug: 3041259
Bug: 3097445
Change-Id: If8f00ce8f2053acfc9319ca366d4a9c02bd396e6
Signed-off-by: Nick Pelly <npelly@google.com>

1 files changed, 92 insertions, 0 deletions

diff --git a/core/jni/android_nfc_NdefRecord.cpp b/core/jni/android_nfc_NdefRecord.cpp
new file mode 100644
index 0000000..8ce1837
--- /dev/null
+++ b/core/jni/android_nfc_NdefRecord.cpp
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "NdefRecord"
+
+#include "jni.h"
+#include "JNIHelp.h"
+
+#include "android_nfc.h"
+
+#include <utils/Log.h>
+
+namespace android {
+
+static jbyteArray android_nfc_NdefRecord_generate(
+        JNIEnv *e, jobject o, jshort flags, jshort tnf, jbyteArray type,
+        jbyteArray id, jbyteArray payload)
+{
+    uint32_t status;
+    phFriNfc_NdefRecord_t record;
+    uint32_t buf_size;
+    uint32_t record_size;
+    uint8_t *buf = NULL;
+    jbyteArray result = NULL;
+
+    /* Prepare NDEF record structure */
+    record.Flags = (uint8_t)flags;
+    record.Tnf = (uint8_t)tnf;
+    record.TypeLength = (uint32_t)e->GetArrayLength(type);
+    record.Type = (uint8_t *)e->GetByteArrayElements(type, NULL);
+    record.IdLength = (uint32_t)e->GetArrayLength(id);
+    record.Id = (uint8_t *)e->GetByteArrayElements(id, NULL);
+    record.PayloadLength = (uint32_t)e->GetArrayLength(payload);
+    record.PayloadData = (uint8_t *)e->GetByteArrayElements(payload, NULL);
+
+    buf_size = record.PayloadLength + record.IdLength + record.TypeLength + 8;
+
+    buf = (uint8_t*)malloc(buf_size);
+    if (buf == NULL)
+        goto end;
+
+    LOGD("phFriNfc_NdefRecord_Generate()");
+
+    status = phFriNfc_NdefRecord_Generate(&record, buf, buf_size,
+            &record_size);
+
+    if (status) {
+        LOGE("phFriNfc_NdefRecord_Generate() returned 0x%04x", status);
+        goto end;
+    }
+    LOGD("phFriNfc_NdefRecord_Generate() returned 0x%04x", status);
+
+    result = e->NewByteArray(record_size);
+    if (result == NULL)
+        goto end;
+
+    e->SetByteArrayRegion(result, 0, record_size, (jbyte *)buf);
+
+end:
+    e->ReleaseByteArrayElements(type, (jbyte *)record.Type, JNI_ABORT);
+    e->ReleaseByteArrayElements(id, (jbyte *)record.Id, JNI_ABORT);
+    e->ReleaseByteArrayElements(payload, (jbyte *)record.PayloadData, JNI_ABORT);
+
+    if(buf)
+        free(buf);
+
+    return result;
+}
+
+static JNINativeMethod gMethods[] = {
+    {"generate", "(SS[B[B[B)[B", (void *)android_nfc_NdefRecord_generate},
+};
+
+int register_android_nfc_NdefRecord(JNIEnv *e)
+{
+    return jniRegisterNativeMethods(e, "android/nfc/NdefRecord", gMethods, NELEM(gMethods));
+}
+
+} // namespace android