| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| #include <assert.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include "bsp/bsp.h" |
| #include "host/ble_hs.h" |
| #include "host/ble_uuid.h" |
| #include "bleprph.h" |
| |
| /** |
| * The vendor specific security test service consists of two characteristics: |
| * o random-number-generator: generates a random 32-bit number each time |
| * it is read. This characteristic can only be read over an encrypted |
| * connection. |
| * o static-value: a single-byte characteristic that can always be read, |
| * but can only be written over an encrypted connection. |
| */ |
| |
| /* 59462f12-9543-9999-12c8-58b459a2712d */ |
| static const ble_uuid128_t gatt_svr_svc_sec_test_uuid = |
| BLE_UUID128_INIT(0x2d, 0x71, 0xa2, 0x59, 0xb4, 0x58, 0xc8, 0x12, |
| 0x99, 0x99, 0x43, 0x95, 0x12, 0x2f, 0x46, 0x59); |
| |
| /* 5c3a659e-897e-45e1-b016-007107c96df6 */ |
| static const ble_uuid128_t gatt_svr_chr_sec_test_rand_uuid = |
| BLE_UUID128_INIT(0xf6, 0x6d, 0xc9, 0x07, 0x71, 0x00, 0x16, 0xb0, |
| 0xe1, 0x45, 0x7e, 0x89, 0x9e, 0x65, 0x3a, 0x5c); |
| |
| /* 5c3a659e-897e-45e1-b016-007107c96df7 */ |
| static const ble_uuid128_t gatt_svr_chr_sec_test_static_uuid = |
| BLE_UUID128_INIT(0xf7, 0x6d, 0xc9, 0x07, 0x71, 0x00, 0x16, 0xb0, |
| 0xe1, 0x45, 0x7e, 0x89, 0x9e, 0x65, 0x3a, 0x5c); |
| |
| static uint8_t gatt_svr_sec_test_static_val; |
| |
| static int |
| gatt_svr_chr_access_sec_test(uint16_t conn_handle, uint16_t attr_handle, |
| struct ble_gatt_access_ctxt *ctxt, |
| void *arg); |
| |
| static const struct ble_gatt_svc_def gatt_svr_svcs[] = { |
| { |
| /*** Service: Security test. */ |
| .type = BLE_GATT_SVC_TYPE_PRIMARY, |
| .uuid = &gatt_svr_svc_sec_test_uuid.u, |
| .characteristics = (struct ble_gatt_chr_def[]) { { |
| /*** Characteristic: Random number generator. */ |
| .uuid = &gatt_svr_chr_sec_test_rand_uuid.u, |
| .access_cb = gatt_svr_chr_access_sec_test, |
| .flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_READ_ENC, |
| }, { |
| /*** Characteristic: Static value. */ |
| .uuid = &gatt_svr_chr_sec_test_static_uuid.u, |
| .access_cb = gatt_svr_chr_access_sec_test, |
| .flags = BLE_GATT_CHR_F_READ | |
| BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_WRITE_ENC, |
| }, { |
| 0, /* No more characteristics in this service. */ |
| } }, |
| }, |
| |
| { |
| 0, /* No more services. */ |
| }, |
| }; |
| |
| static int |
| gatt_svr_chr_write(struct os_mbuf *om, uint16_t min_len, uint16_t max_len, |
| void *dst, uint16_t *len) |
| { |
| uint16_t om_len; |
| int rc; |
| |
| om_len = OS_MBUF_PKTLEN(om); |
| if (om_len < min_len || om_len > max_len) { |
| return BLE_ATT_ERR_INVALID_ATTR_VALUE_LEN; |
| } |
| |
| rc = ble_hs_mbuf_to_flat(om, dst, max_len, len); |
| if (rc != 0) { |
| return BLE_ATT_ERR_UNLIKELY; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| gatt_svr_chr_access_sec_test(uint16_t conn_handle, uint16_t attr_handle, |
| struct ble_gatt_access_ctxt *ctxt, |
| void *arg) |
| { |
| const ble_uuid_t *uuid; |
| int rand_num; |
| int rc; |
| |
| uuid = ctxt->chr->uuid; |
| |
| /* Determine which characteristic is being accessed by examining its |
| * 128-bit UUID. |
| */ |
| |
| if (ble_uuid_cmp(uuid, &gatt_svr_chr_sec_test_rand_uuid.u) == 0) { |
| assert(ctxt->op == BLE_GATT_ACCESS_OP_READ_CHR); |
| |
| /* Respond with a 32-bit random number. */ |
| rand_num = rand(); |
| rc = os_mbuf_append(ctxt->om, &rand_num, sizeof rand_num); |
| return rc == 0 ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES; |
| } |
| |
| if (ble_uuid_cmp(uuid, &gatt_svr_chr_sec_test_static_uuid.u) == 0) { |
| switch (ctxt->op) { |
| case BLE_GATT_ACCESS_OP_READ_CHR: |
| rc = os_mbuf_append(ctxt->om, &gatt_svr_sec_test_static_val, |
| sizeof gatt_svr_sec_test_static_val); |
| return rc == 0 ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES; |
| |
| case BLE_GATT_ACCESS_OP_WRITE_CHR: |
| rc = gatt_svr_chr_write(ctxt->om, |
| sizeof gatt_svr_sec_test_static_val, |
| sizeof gatt_svr_sec_test_static_val, |
| &gatt_svr_sec_test_static_val, NULL); |
| return rc; |
| |
| default: |
| assert(0); |
| return BLE_ATT_ERR_UNLIKELY; |
| } |
| } |
| |
| /* Unknown characteristic; the nimble stack should not have called this |
| * function. |
| */ |
| assert(0); |
| return BLE_ATT_ERR_UNLIKELY; |
| } |
| |
| void |
| gatt_svr_register_cb(struct ble_gatt_register_ctxt *ctxt, void *arg) |
| { |
| char buf[BLE_UUID_STR_LEN]; |
| |
| switch (ctxt->op) { |
| case BLE_GATT_REGISTER_OP_SVC: |
| MODLOG_DFLT(DEBUG, "registered service %s with handle=%d\n", |
| ble_uuid_to_str(ctxt->svc.svc_def->uuid, buf), |
| ctxt->svc.handle); |
| break; |
| |
| case BLE_GATT_REGISTER_OP_CHR: |
| MODLOG_DFLT(DEBUG, "registering characteristic %s with " |
| "def_handle=%d val_handle=%d\n", |
| ble_uuid_to_str(ctxt->chr.chr_def->uuid, buf), |
| ctxt->chr.def_handle, |
| ctxt->chr.val_handle); |
| break; |
| |
| case BLE_GATT_REGISTER_OP_DSC: |
| MODLOG_DFLT(DEBUG, "registering descriptor %s with handle=%d\n", |
| ble_uuid_to_str(ctxt->dsc.dsc_def->uuid, buf), |
| ctxt->dsc.handle); |
| break; |
| |
| default: |
| assert(0); |
| break; |
| } |
| } |
| |
| int |
| gatt_svr_init(void) |
| { |
| int rc; |
| |
| rc = ble_gatts_count_cfg(gatt_svr_svcs); |
| if (rc != 0) { |
| return rc; |
| } |
| |
| rc = ble_gatts_add_svcs(gatt_svr_svcs); |
| if (rc != 0) { |
| return rc; |
| } |
| |
| return 0; |
| } |
