/*
 * Copyright (C) 2015 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 "BluetoothSdpJni"

#define LOG_NDEBUG 0

#include "com_android_bluetooth.h"
#include "hardware/bt_sdp.h"
#include "utils/Log.h"
#include "android_runtime/AndroidRuntime.h"

#include <string.h>

static const uint8_t  UUID_OBEX_OBJECT_PUSH[] = {0x00, 0x00, 0x11, 0x05, 0x00, 0x00, 0x10, 0x00,
                                                 0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB};
static const uint8_t  UUID_PBAP_PSE[] = {0x00, 0x00, 0x11, 0x2F, 0x00, 0x00, 0x10, 0x00,
                                         0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB};
static const uint8_t  UUID_MAP_MAS[] = {0x00, 0x00, 0x11, 0x32, 0x00, 0x00, 0x10, 0x00,
                                        0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB};
static const uint8_t  UUID_MAP_MNS[] = {0x00, 0x00, 0x11, 0x33, 0x00, 0x00, 0x10, 0x00,
                                        0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB};
static const uint8_t  UUID_SAP[] = {0x00, 0x00, 0x11, 0x2D, 0x00, 0x00, 0x10, 0x00,
                                    0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB};
// TODO:
// Both the fact that the UUIDs are declared in multiple places, plus the fact
// that there is a mess of UUID comparison and shortening methods will have to
// be fixed.
// The btcore->uuid module should be used for all instances.

#define UUID_MAX_LENGTH 16
#define IS_UUID(u1,u2)  !memcmp(u1,u2,UUID_MAX_LENGTH)


namespace android {
static jmethodID method_sdpRecordFoundCallback;
static jmethodID method_sdpMasRecordFoundCallback;
static jmethodID method_sdpMnsRecordFoundCallback;
static jmethodID method_sdpPseRecordFoundCallback;
static jmethodID method_sdpOppOpsRecordFoundCallback;
static jmethodID method_sdpSapsRecordFoundCallback;

static const btsdp_interface_t *sBluetoothSdpInterface = NULL;

static void sdp_search_callback(bt_status_t status, bt_bdaddr_t *bd_addr, uint8_t* uuid_in,
        int record_size, bluetooth_sdp_record* record);

btsdp_callbacks_t sBluetoothSdpCallbacks = {
        sizeof(sBluetoothSdpCallbacks),
        sdp_search_callback
};

static jobject sCallbacksObj = NULL;
static JNIEnv *sCallbackEnv = NULL;

static bool checkCallbackThread() {
    sCallbackEnv = getCallbackEnv();

    JNIEnv* env = AndroidRuntime::getJNIEnv();
    if (sCallbackEnv != env || sCallbackEnv == NULL) {
        ALOGE("Callback env check fail: env: %p, callback: %p", env, sCallbackEnv);
        return false;
    }
    return true;
}

static void initializeNative(JNIEnv *env, jobject object) {
    const bt_interface_t* btInf;

    if ( (btInf = getBluetoothInterface()) == NULL) {
        ALOGE("Bluetooth module is not loaded");
        return;
    }
    if (sBluetoothSdpInterface !=NULL) {
         ALOGW("Cleaning up Bluetooth SDP Interface before initializing...");
         sBluetoothSdpInterface->deinit();
         sBluetoothSdpInterface = NULL;
    }
    if ( (sBluetoothSdpInterface = (btsdp_interface_t *)
            btInf->get_profile_interface(BT_PROFILE_SDP_CLIENT_ID)) == NULL) {
            ALOGE("Error getting SDP client interface");
    }else{
        sBluetoothSdpInterface->init(&sBluetoothSdpCallbacks);
    }

    sCallbacksObj = env->NewGlobalRef(object);
}

static void classInitNative(JNIEnv* env, jclass clazz) {

    /* generic SDP record (raw data)*/
    method_sdpRecordFoundCallback = env->GetMethodID(clazz,
                                                    "sdpRecordFoundCallback",
                                                    "(I[B[BI[B)V");

    /* MAS SDP record*/
    method_sdpMasRecordFoundCallback = env->GetMethodID(clazz,
                                                    "sdpMasRecordFoundCallback",
                                                    "(I[B[BIIIIIILjava/lang/String;Z)V");
    /* MNS SDP record*/
    method_sdpMnsRecordFoundCallback = env->GetMethodID(clazz,
                                                    "sdpMnsRecordFoundCallback",
                                                    "(I[B[BIIIILjava/lang/String;Z)V");
    /* PBAP PSE record */
    method_sdpPseRecordFoundCallback = env->GetMethodID(clazz,
                                                    "sdpPseRecordFoundCallback",
                                                    "(I[B[BIIIIILjava/lang/String;Z)V");
    /* OPP Server record */
    method_sdpOppOpsRecordFoundCallback = env->GetMethodID(clazz,
                                                    "sdpOppOpsRecordFoundCallback",
                                                    "(I[B[BIIILjava/lang/String;[BZ)V");
    /* SAP Server record */
    method_sdpSapsRecordFoundCallback = env->GetMethodID(clazz,
                                                    "sdpSapsRecordFoundCallback",
                                                    "(I[B[BIILjava/lang/String;Z)V");

}

static jboolean sdpSearchNative(JNIEnv *env, jobject obj, jbyteArray address, jbyteArray uuidObj) {
    ALOGD("%s:",__FUNCTION__);

    jbyte *addr = NULL, *uuid = NULL;
    jboolean result = JNI_FALSE;
    int ret;
    if (!sBluetoothSdpInterface)
        goto Fail;

    addr = env->GetByteArrayElements(address, NULL);
    if (addr == NULL) {
        jniThrowIOException(env, EINVAL);
        goto Fail;
    }
    uuid = env->GetByteArrayElements(uuidObj, NULL);
    if (!uuid) {
        ALOGE("failed to get uuid");
        goto Fail;
    }
    ALOGD("%s UUID %.*s",__FUNCTION__,16, (uint8_t*)uuid);


    if ((ret = sBluetoothSdpInterface->sdp_search((bt_bdaddr_t *)addr,
                    (const uint8_t*)uuid)) != BT_STATUS_SUCCESS) {
        ALOGE("SDP Search initialization failed: %d", ret);
        goto Fail;
    }

    result = (ret == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;

    Fail:
    if (addr) env->ReleaseByteArrayElements(address, addr, 0);
    if (uuid) env->ReleaseByteArrayElements(uuidObj, uuid, 0);
    return result;
}

static void sdp_search_callback(bt_status_t status, bt_bdaddr_t *bd_addr, uint8_t* uuid_in,
        int count, bluetooth_sdp_record* records)
{

    jbyteArray addr = NULL;
    jbyteArray uuid = NULL;
    jstring service_name = NULL;
    int i = 0;
    bluetooth_sdp_record* record;

    if (!checkCallbackThread()) {
        ALOGE("Callback: '%s' is not called on the correct thread", __FUNCTION__);
        goto clean;
    }

    addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));
    if (addr == NULL) goto clean;

    uuid = sCallbackEnv->NewByteArray(sizeof(bt_uuid_t));
    if (uuid == NULL) goto clean;

    sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte*)bd_addr);
    sCallbackEnv->SetByteArrayRegion(uuid, 0, sizeof(bt_uuid_t), (jbyte*)uuid_in);

    ALOGD("%s: Status is: %d, Record count: %d", __FUNCTION__, status, count);

    // Ensure we run the loop at least once, to also signal errors if they occure
    for(i = 0; i < count || i==0; i++) {
        bool more_results = (i<(count-1))?true:false;
        record = &records[i];
        service_name = NULL;
        if (record->hdr.service_name_length > 0) {
            ALOGD("%s, ServiceName:  %s", __FUNCTION__, record->mas.hdr.service_name);
            service_name = (jstring)sCallbackEnv->NewStringUTF(record->mas.hdr.service_name);
        }

        /* call the right callback according to the uuid*/
        if (IS_UUID(UUID_MAP_MAS,uuid_in)){

            sCallbackEnv->CallVoidMethod(sCallbacksObj, method_sdpMasRecordFoundCallback,
                    (jint) status,
                    addr,
                    uuid,
                    (jint)record->mas.mas_instance_id,
                    (jint)record->mas.hdr.l2cap_psm,
                    (jint)record->mas.hdr.rfcomm_channel_number,
                    (jint)record->mas.hdr.profile_version,
                    (jint)record->mas.supported_features,
                    (jint)record->mas.supported_message_types,
                    service_name,
                    more_results);

        }else if (IS_UUID(UUID_MAP_MNS,uuid_in)){

            sCallbackEnv->CallVoidMethod(sCallbacksObj, method_sdpMnsRecordFoundCallback,
                    (jint) status,
                    addr,
                    uuid,
                    (jint)record->mns.hdr.l2cap_psm,
                    (jint)record->mns.hdr.rfcomm_channel_number,
                    (jint)record->mns.hdr.profile_version,
                    (jint)record->mns.supported_features,
                    service_name,
                    more_results);

        } else if (IS_UUID(UUID_PBAP_PSE, uuid_in)) {

            sCallbackEnv->CallVoidMethod(sCallbacksObj, method_sdpPseRecordFoundCallback,
                    (jint) status,
                    addr,
                    uuid,
                    (jint)record->pse.hdr.l2cap_psm,
                    (jint)record->pse.hdr.rfcomm_channel_number,
                    (jint)record->pse.hdr.profile_version,
                    (jint)record->pse.supported_features,
                    (jint)record->pse.supported_repositories,
                    service_name,
                    more_results);

        } else if (IS_UUID(UUID_OBEX_OBJECT_PUSH, uuid_in)) {

            jint formats_list_size = record->ops.supported_formats_list_len;
            jbyteArray formats_list = sCallbackEnv->NewByteArray(formats_list_size);
            if (formats_list == NULL) goto clean;
            sCallbackEnv->SetByteArrayRegion(formats_list, 0, formats_list_size,
                    (jbyte*)record->ops.supported_formats_list);

            sCallbackEnv->CallVoidMethod(sCallbacksObj, method_sdpOppOpsRecordFoundCallback,
                    (jint) status,
                    addr,
                    uuid,
                    (jint)record->ops.hdr.l2cap_psm,
                    (jint)record->ops.hdr.rfcomm_channel_number,
                    (jint)record->ops.hdr.profile_version,
                    service_name,
                    formats_list,
                    more_results);
            sCallbackEnv->DeleteLocalRef(formats_list);

        } else if (IS_UUID(UUID_SAP, uuid_in)) {
            sCallbackEnv->CallVoidMethod(sCallbacksObj, method_sdpSapsRecordFoundCallback,
                    (jint) status,
                    addr,
                    uuid,
                    (jint)record->mas.hdr.rfcomm_channel_number,
                    (jint)record->mas.hdr.profile_version,
                    service_name,
                    more_results);
        } else {
            // we don't have a wrapper for this uuid, send as raw data
            jint record_data_size = record->hdr.user1_ptr_len;
            jbyteArray record_data = NULL;

            record_data = sCallbackEnv->NewByteArray(record_data_size);
            if (record_data == NULL) goto clean;

            sCallbackEnv->SetByteArrayRegion(record_data, 0, record_data_size,
                    (jbyte*)record->hdr.user1_ptr);
            sCallbackEnv->CallVoidMethod(sCallbacksObj, method_sdpRecordFoundCallback,
                    (jint) status, addr, uuid, record_data_size, record_data);

            sCallbackEnv->DeleteLocalRef(record_data);

        }
        // Cleanup for each iteration
        if (service_name != NULL) {
            sCallbackEnv->DeleteLocalRef(service_name);
            service_name = NULL;
        }
    } // End of for-loop

    clean:
    if (service_name != NULL)
        sCallbackEnv->DeleteLocalRef(service_name);
    if (addr != NULL) sCallbackEnv->DeleteLocalRef(addr);
    if (uuid != NULL) sCallbackEnv->DeleteLocalRef(uuid);
    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
}

static jint sdpCreateMapMasRecordNative(JNIEnv *env, jobject obj, jstring name_str, jint mas_id,
                                         jint scn, jint l2cap_psm, jint version,
                                         jint msg_types, jint features) {
    ALOGD("%s:", __FUNCTION__);

    const char* service_name = NULL;
    bluetooth_sdp_record record = {}; // Must be zero initialized
    int handle=-1;
    int ret = 0;
    if (!sBluetoothSdpInterface) return handle;

    record.mas.hdr.type = SDP_TYPE_MAP_MAS;

    if (name_str != NULL) {
        service_name = env->GetStringUTFChars(name_str, NULL);
        record.mas.hdr.service_name = (char *) service_name;
        record.mas.hdr.service_name_length = strlen(service_name);
    } else {
        record.mas.hdr.service_name = NULL;
        record.mas.hdr.service_name_length = 0;
    }
    record.mas.hdr.rfcomm_channel_number = scn;
    record.mas.hdr.l2cap_psm = l2cap_psm;
    record.mas.hdr.profile_version = version;

    record.mas.mas_instance_id = mas_id;
    record.mas.supported_features = features;
    record.mas.supported_message_types = msg_types;

    if ( (ret = sBluetoothSdpInterface->create_sdp_record(&record, &handle))
            != BT_STATUS_SUCCESS) {
        ALOGE("SDP Create record failed: %d", ret);
        goto Fail;
    }

    ALOGD("SDP Create record success - handle: %d", handle);

    Fail:
    if (service_name) env->ReleaseStringUTFChars(name_str, service_name);
    return handle;
}

static jint sdpCreateMapMnsRecordNative(JNIEnv *env, jobject obj, jstring name_str,
                                         jint scn, jint l2cap_psm, jint version,
                                         jint features) {
    ALOGD("%s:",__FUNCTION__);

    const char* service_name = NULL;
    bluetooth_sdp_record record = {}; // Must be zero initialized
    int handle=-1;
    int ret = 0;
    if (!sBluetoothSdpInterface) return handle;

    record.mns.hdr.type = SDP_TYPE_MAP_MNS;

    if (name_str != NULL) {
        service_name = env->GetStringUTFChars(name_str, NULL);
        record.mns.hdr.service_name = (char *) service_name;
        record.mns.hdr.service_name_length = strlen(service_name);
    } else {
        record.mns.hdr.service_name = NULL;
        record.mns.hdr.service_name_length = 0;
    }
    record.mns.hdr.rfcomm_channel_number = scn;
    record.mns.hdr.l2cap_psm = l2cap_psm;
    record.mns.hdr.profile_version = version;

    record.mns.supported_features = features;

    if ( (ret = sBluetoothSdpInterface->create_sdp_record(&record, &handle))
            != BT_STATUS_SUCCESS) {
        ALOGE("SDP Create record failed: %d", ret);
        goto Fail;
    }

    ALOGD("SDP Create record success - handle: %d", handle);

    Fail:
    if (service_name) env->ReleaseStringUTFChars(name_str, service_name);
    return handle;
}

static jint sdpCreatePbapPseRecordNative(JNIEnv *env, jobject obj, jstring name_str,
                                         jint scn, jint l2cap_psm, jint version,
                                         jint supported_repositories, jint features) {
    ALOGD("%s:",__FUNCTION__);

    const char* service_name = NULL;
    bluetooth_sdp_record record = {}; // Must be zero initialized
    int handle=-1;
    int ret = 0;
    if (!sBluetoothSdpInterface) return handle;

    record.pse.hdr.type = SDP_TYPE_PBAP_PSE;

    if (name_str != NULL) {
        service_name = env->GetStringUTFChars(name_str, NULL);
        record.pse.hdr.service_name = (char *) service_name;
        record.pse.hdr.service_name_length = strlen(service_name);
    } else {
        record.pse.hdr.service_name = NULL;
        record.pse.hdr.service_name_length = 0;
    }
    record.pse.hdr.rfcomm_channel_number = scn;
    record.pse.hdr.l2cap_psm = l2cap_psm;
    record.pse.hdr.profile_version = version;

    record.pse.supported_features = features;
    record.pse.supported_repositories = supported_repositories;

    if ( (ret = sBluetoothSdpInterface->create_sdp_record(&record, &handle))
            != BT_STATUS_SUCCESS) {
        ALOGE("SDP Create record failed: %d", ret);
        goto Fail;
    }

    ALOGD("SDP Create record success - handle: %d", handle);

    Fail:
    if (service_name) env->ReleaseStringUTFChars(name_str, service_name);
    return handle;
}

static jint sdpCreateOppOpsRecordNative(JNIEnv *env, jobject obj, jstring name_str,
                                         jint scn, jint l2cap_psm, jint version,
                                         jbyteArray supported_formats_list) {
    ALOGD("%s:",__FUNCTION__);

    const char* service_name = NULL;
    bluetooth_sdp_record record = {}; // Must be zero initialized
    jbyte* formats_list;
    int formats_list_len = 0;
    int handle=-1;
    int ret = 0;
    if (!sBluetoothSdpInterface) return handle;

    record.ops.hdr.type = SDP_TYPE_OPP_SERVER;

    if (name_str != NULL) {
        service_name = env->GetStringUTFChars(name_str, NULL);
        record.ops.hdr.service_name = (char *) service_name;
        record.ops.hdr.service_name_length = strlen(service_name);
    } else {
        record.ops.hdr.service_name = NULL;
        record.ops.hdr.service_name_length = 0;
    }
    record.ops.hdr.rfcomm_channel_number = scn;
    record.ops.hdr.l2cap_psm = l2cap_psm;
    record.ops.hdr.profile_version = version;

    formats_list = env->GetByteArrayElements(supported_formats_list, NULL);
    if (formats_list != NULL) {
        formats_list_len = env->GetArrayLength(supported_formats_list);
        if (formats_list_len > SDP_OPP_SUPPORTED_FORMATS_MAX_LENGTH) {
            formats_list_len = SDP_OPP_SUPPORTED_FORMATS_MAX_LENGTH;
        }
        memcpy(record.ops.supported_formats_list, formats_list, formats_list_len);
    }

    record.ops.supported_formats_list_len = formats_list_len;

    if ( (ret = sBluetoothSdpInterface->create_sdp_record(&record, &handle))
            != BT_STATUS_SUCCESS) {
        ALOGE("SDP Create record failed: %d", ret);
        goto Fail;
    }

    ALOGD("SDP Create record success - handle: %d", handle);

    Fail:
    if (service_name) env->ReleaseStringUTFChars(name_str, service_name);
    if (formats_list) env->ReleaseByteArrayElements(supported_formats_list, formats_list, 0);
    return handle;
}

static jint sdpCreateSapsRecordNative(JNIEnv *env, jobject obj, jstring name_str,
                                         jint scn, jint version) {
    ALOGD("%s:",__FUNCTION__);

    const char* service_name = NULL;
    bluetooth_sdp_record record = {}; // Must be zero initialized
    int handle = -1;
    int ret = 0;
    if (!sBluetoothSdpInterface) return handle;

    record.sap.hdr.type = SDP_TYPE_SAP_SERVER;

    if (name_str != NULL) {
        service_name = env->GetStringUTFChars(name_str, NULL);
        record.mas.hdr.service_name = (char *) service_name;
        record.mas.hdr.service_name_length = strlen(service_name);
    } else {
        record.mas.hdr.service_name = NULL;
        record.mas.hdr.service_name_length = 0;
    }
    record.mas.hdr.rfcomm_channel_number = scn;
    record.mas.hdr.profile_version = version;

    if ( (ret = sBluetoothSdpInterface->create_sdp_record(&record, &handle))
            != BT_STATUS_SUCCESS) {
        ALOGE("SDP Create record failed: %d", ret);
        goto Fail;
    }

    ALOGD("SDP Create record success - handle: %d", handle);

    Fail:
    if (service_name) env->ReleaseStringUTFChars(name_str, service_name);
    return handle;
}

static jboolean sdpRemoveSdpRecordNative(JNIEnv *env, jobject obj, jint record_id) {
    ALOGD("%s:",__FUNCTION__);

    int ret = 0;
    if (!sBluetoothSdpInterface) return false;

    if ( (ret = sBluetoothSdpInterface->remove_sdp_record(record_id))
            != BT_STATUS_SUCCESS) {
        ALOGE("SDP Remove record failed: %d", ret);
        return false;
    }

    ALOGD("SDP Remove record success - handle: %d", record_id);
    return true;
}


static void cleanupNative(JNIEnv *env, jobject object) {
    const bt_interface_t* btInf;

    if ( (btInf = getBluetoothInterface()) == NULL) {
        ALOGE("Bluetooth module is not loaded");
        return;
    }

    if (sBluetoothSdpInterface !=NULL) {
        ALOGW("Cleaning up Bluetooth SDP Interface...");
        sBluetoothSdpInterface->deinit();
        sBluetoothSdpInterface = NULL;
    }

    if (sCallbacksObj != NULL) {
        ALOGW("Cleaning up Bluetooth Health object");
        env->DeleteGlobalRef(sCallbacksObj);
        sCallbacksObj = NULL;
    }
}

static JNINativeMethod sMethods[] = {
    /* name, signature, funcPtr */
    {"classInitNative", "()V", (void *) classInitNative},
    {"initializeNative", "()V", (void *) initializeNative},
    {"cleanupNative", "()V", (void*) cleanupNative},
    {"sdpSearchNative", "([B[B)Z", (void*) sdpSearchNative},
    {"sdpCreateMapMasRecordNative", "(Ljava/lang/String;IIIIII)I",
        (void*) sdpCreateMapMasRecordNative},
    {"sdpCreateMapMnsRecordNative", "(Ljava/lang/String;IIII)I",
        (void*) sdpCreateMapMnsRecordNative},
    {"sdpCreatePbapPseRecordNative", "(Ljava/lang/String;IIIII)I",
        (void*) sdpCreatePbapPseRecordNative},
    {"sdpCreateOppOpsRecordNative", "(Ljava/lang/String;III[B)I",
        (void*) sdpCreateOppOpsRecordNative},
    {"sdpCreateSapsRecordNative", "(Ljava/lang/String;II)I",
        (void*) sdpCreateSapsRecordNative},
    {"sdpRemoveSdpRecordNative", "(I)Z", (void*) sdpRemoveSdpRecordNative}
};

int register_com_android_bluetooth_sdp(JNIEnv* env)
{
    return jniRegisterNativeMethods(env, "com/android/bluetooth/sdp/SdpManager",
                                    sMethods, NELEM(sMethods));
}


}