1 /*
2 * Copyright (C) 2016 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 <cstdarg>
18 #include <cstdio>
19 #include <cstring>
20
21 #include "chre_api/chre/event.h"
22 #include "chre_api/chre/re.h"
23 #include "chre/core/event_loop_manager.h"
24 #include "chre/core/host_comms_manager.h"
25 #include "chre/platform/fatal_error.h"
26 #include "chre/platform/log.h"
27 #include "chre/util/macros.h"
28
29 using chre::EventLoop;
30 using chre::EventLoopManager;
31 using chre::EventLoopManagerSingleton;
32 using chre::Nanoapp;
33
chreAbort(uint32_t abortCode)34 DLL_EXPORT void chreAbort(uint32_t abortCode) {
35 Nanoapp *nanoapp = EventLoopManager::validateChreApiCall(__func__);
36
37 // TODO: we should cleanly unload the nanoapp, release all of its resources,
38 // and send an abort notification to the host so as to localize the impact to
39 // the calling nanoapp
40 if (nanoapp == nullptr) {
41 FATAL_ERROR("chreAbort called in unknown context");
42 } else {
43 FATAL_ERROR("chreAbort called by app 0x%016" PRIx64, nanoapp->getAppId());
44 }
45 }
46
chreSendEvent(uint16_t eventType,void * eventData,chreEventCompleteFunction * freeCallback,uint32_t targetInstanceId)47 DLL_EXPORT bool chreSendEvent(uint16_t eventType, void *eventData,
48 chreEventCompleteFunction *freeCallback,
49 uint32_t targetInstanceId) {
50 Nanoapp *nanoapp = EventLoopManager::validateChreApiCall(__func__);
51
52 // Prevent an app that is in the process of being unloaded from generating new
53 // events
54 bool success = false;
55 EventLoop& eventLoop = EventLoopManagerSingleton::get()->getEventLoop();
56 if (eventLoop.currentNanoappIsStopping()) {
57 LOGW("Rejecting event from app instance %" PRIu32 " because it's stopping",
58 nanoapp->getInstanceId());
59 } else {
60 success = eventLoop.postEvent(eventType, eventData, freeCallback,
61 nanoapp->getInstanceId(), targetInstanceId);
62 }
63
64 if (!success && freeCallback != nullptr) {
65 freeCallback(eventType, eventData);
66 }
67 return success;
68 }
69
chreSendMessageToHost(void * message,uint32_t messageSize,uint32_t messageType,chreMessageFreeFunction * freeCallback)70 DLL_EXPORT bool chreSendMessageToHost(void *message, uint32_t messageSize,
71 uint32_t messageType,
72 chreMessageFreeFunction *freeCallback) {
73 return chreSendMessageToHostEndpoint(
74 message, static_cast<size_t>(messageSize), messageType,
75 CHRE_HOST_ENDPOINT_BROADCAST, freeCallback);
76 }
77
chreSendMessageToHostEndpoint(void * message,size_t messageSize,uint32_t messageType,uint16_t hostEndpoint,chreMessageFreeFunction * freeCallback)78 DLL_EXPORT bool chreSendMessageToHostEndpoint(
79 void *message, size_t messageSize, uint32_t messageType,
80 uint16_t hostEndpoint, chreMessageFreeFunction *freeCallback) {
81 Nanoapp *nanoapp = EventLoopManager::validateChreApiCall(__func__);
82
83 bool success = false;
84 const EventLoop& eventLoop = EventLoopManagerSingleton::get()
85 ->getEventLoop();
86 if (eventLoop.currentNanoappIsStopping()) {
87 LOGW("Rejecting message to host from app instance %" PRIu32 " because it's "
88 "stopping", nanoapp->getInstanceId());
89 } else {
90 auto& hostCommsManager =
91 EventLoopManagerSingleton::get()->getHostCommsManager();
92 success = hostCommsManager.sendMessageToHostFromNanoapp(
93 nanoapp, message, messageSize, messageType, hostEndpoint, freeCallback);
94 }
95
96 if (!success && freeCallback != nullptr) {
97 freeCallback(message, messageSize);
98 }
99
100 return success;
101 }
102
chreGetNanoappInfoByAppId(uint64_t appId,struct chreNanoappInfo * info)103 DLL_EXPORT bool chreGetNanoappInfoByAppId(uint64_t appId,
104 struct chreNanoappInfo *info) {
105 return EventLoopManagerSingleton::get()->getEventLoop()
106 .populateNanoappInfoForAppId(appId, info);
107 }
108
chreGetNanoappInfoByInstanceId(uint32_t instanceId,struct chreNanoappInfo * info)109 DLL_EXPORT bool chreGetNanoappInfoByInstanceId(uint32_t instanceId,
110 struct chreNanoappInfo *info) {
111 return EventLoopManagerSingleton::get()->getEventLoop()
112 .populateNanoappInfoForInstanceId(instanceId, info);
113 }
114
chreConfigureNanoappInfoEvents(bool enable)115 DLL_EXPORT void chreConfigureNanoappInfoEvents(bool enable) {
116 chre::Nanoapp *nanoapp = EventLoopManager::validateChreApiCall(__func__);
117 nanoapp->configureNanoappInfoEvents(enable);
118 }
119