1 /*
2 * Copyright (C) 2021 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 #include <chre.h>
18 #include <cinttypes>
19
20 #include <pb_decode.h>
21
22 #include "chre/util/nanoapp/log.h"
23 #include "ping_test.nanopb.h"
24 #include "send_message.h"
25
26 #define LOG_TAG "[PingTest]"
27
28 namespace chre {
29
30 namespace {
31
32 //! The message payload to use when responding to a ping request.
33 const char *kPingResponseMsg = "Pong!";
34
handleMessageFromHost(uint32_t senderInstanceId,const chreMessageFromHostData * hostData)35 void handleMessageFromHost(uint32_t senderInstanceId,
36 const chreMessageFromHostData *hostData) {
37 bool success = false;
38 uint32_t messageType = hostData->messageType;
39 if (senderInstanceId != CHRE_INSTANCE_ID) {
40 LOGE("Incorrect sender instance id: %" PRIu32, senderInstanceId);
41 } else if (messageType != ping_test_MessageType_PING_COMMAND) {
42 LOGE("Invalid message type %" PRIu32, messageType);
43 } else {
44 pb_istream_t istream = pb_istream_from_buffer(
45 static_cast<const pb_byte_t *>(hostData->message),
46 hostData->messageSize);
47 ping_test_PingCommand command = ping_test_PingCommand_init_default;
48
49 if (!pb_decode(&istream, ping_test_PingCommand_fields, &command)) {
50 LOGE("Failed to decode ping command error %s", PB_GET_ERROR(&istream));
51 } else {
52 uint32_t permissions = command.permissions;
53 LOGI("Got ping command message with permission 0x%" PRIx32, permissions);
54 success = chreSendMessageWithPermissions(
55 const_cast<char *>(kPingResponseMsg), strlen(kPingResponseMsg) + 1,
56 ping_test_MessageType_PING_RESPONSE, hostData->hostEndpoint,
57 permissions, nullptr /* freeCallback */);
58 }
59 }
60
61 if (!success) {
62 test_shared::sendTestResultToHost(
63 hostData->hostEndpoint,
64 ping_test_MessageType_TEST_RESULT /* messageType */,
65 false /* success */);
66 }
67 }
68
69 } // anonymous namespace
70
nanoappHandleEvent(uint32_t senderInstanceId,uint16_t eventType,const void * eventData)71 extern "C" void nanoappHandleEvent(uint32_t senderInstanceId,
72 uint16_t eventType, const void *eventData) {
73 if (eventType == CHRE_EVENT_MESSAGE_FROM_HOST) {
74 handleMessageFromHost(
75 senderInstanceId,
76 static_cast<const chreMessageFromHostData *>(eventData));
77 } else {
78 LOGW("Got unknown event type from senderInstanceId %" PRIu32
79 " and with eventType %" PRIu16,
80 senderInstanceId, eventType);
81 }
82 }
83
nanoappStart(void)84 extern "C" bool nanoappStart(void) {
85 return true;
86 }
87
nanoappEnd(void)88 extern "C" void nanoappEnd(void) {}
89
90 } // namespace chre
91