1 /*
2 * Copyright (C) 2017 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 <cinttypes>
18
19 #include "chre/core/event_loop.h"
20 #include "chre/core/event_loop_manager.h"
21 #include "chre/platform/assert.h"
22 #include "chre/platform/log.h"
23 #include "chre/platform/static_nanoapp_init.h"
24 #include "chre/util/nanoapp/app_id.h"
25 #include "chre/util/system/napp_permissions.h"
26 #include "chre/util/time.h"
27 #include "chre_api/chre.h"
28
29 /**
30 * @file
31 * A nanoapp exclusively for testing, which unloads the spammer nanoapp after a
32 * short delay. Must only be compiled as a static/internal nanoapp, because it
33 * accesses internal framework APIs to do the unload - generally, nanoapps are
34 * not allowed to unload other nanoapps.
35 */
36
37 namespace chre {
38 namespace {
39
40 constexpr uint32_t kAppVersion = 99;
41
handleUnload(uint16_t,void *,void *)42 void handleUnload(uint16_t /*type*/, void * /*data*/, void * /*extraData*/) {
43 EventLoop &eventLoop = EventLoopManagerSingleton::get()->getEventLoop();
44 uint32_t instanceId;
45
46 LOGD("About to unload spammer nanoapp");
47 if (!eventLoop.findNanoappInstanceIdByAppId(kSpammerAppId, &instanceId)) {
48 LOGE("Couldn't unload nanoapp: not found");
49 } else if (!eventLoop.unloadNanoapp(instanceId, true)) {
50 LOGE("Failed to unload nanoapp");
51 }
52 }
53
nanoappStart()54 bool nanoappStart() {
55 LOGI("Unload tester started as instance %" PRIu32, chreGetInstanceId());
56
57 constexpr uint64_t kTimerDuration = Seconds(2).toRawNanoseconds();
58 uint32_t timerHandle =
59 chreTimerSet(kTimerDuration, nullptr, true /* oneShot */);
60 CHRE_ASSERT_LOG(timerHandle != CHRE_TIMER_INVALID, "Couldn't start timer!");
61
62 bool eventSent = chreSendEvent(CHRE_EVENT_FIRST_USER_VALUE, nullptr, nullptr,
63 chreGetInstanceId());
64 CHRE_ASSERT_LOG(eventSent, "Couldn't send event to self!");
65
66 struct chreNanoappInfo info;
67 bool gotInfo = chreGetNanoappInfoByInstanceId(chreGetInstanceId(), &info);
68 CHRE_ASSERT(gotInfo);
69 CHRE_ASSERT(info.appId == chreGetAppId());
70 CHRE_ASSERT(info.appId == kUnloadTesterAppId);
71 CHRE_ASSERT(info.version == kAppVersion);
72 CHRE_ASSERT(info.instanceId == chreGetInstanceId());
73
74 chreConfigureNanoappInfoEvents(true);
75 return true;
76 }
77
nanoappHandleEvent(uint32_t senderInstanceId,uint16_t eventType,const void * eventData)78 void nanoappHandleEvent(uint32_t senderInstanceId, uint16_t eventType,
79 const void *eventData) {
80 if (eventType == CHRE_EVENT_FIRST_USER_VALUE &&
81 senderInstanceId == chreGetInstanceId()) {
82 struct chreNanoappInfo info;
83 if (!chreGetNanoappInfoByAppId(kSpammerAppId, &info)) {
84 LOGW("Couldn't get spammer's app info - not running?");
85 }
86 } else if (eventType == CHRE_EVENT_TIMER) {
87 // We can't do the unload from the context of another nanoapp's handle
88 // event callback, so get into the system context
89 EventLoopManagerSingleton::get()->deferCallback(
90 SystemCallbackType::HandleUnloadNanoapp, nullptr, handleUnload);
91 } else if (eventType == CHRE_EVENT_NANOAPP_STARTED ||
92 eventType == CHRE_EVENT_NANOAPP_STOPPED) {
93 const auto *info = static_cast<const chreNanoappInfo *>(eventData);
94 if (info->appId == kSpammerAppId) {
95 LOGD("Received %s event for spammer instance %" PRIu32,
96 (eventType == CHRE_EVENT_NANOAPP_STARTED) ? "start" : "stop",
97 info->instanceId);
98 }
99 }
100 }
101
nanoappEnd()102 void nanoappEnd() {}
103
104 } // anonymous namespace
105 } // namespace chre
106
107 CHRE_STATIC_NANOAPP_INIT(UnloadTester, chre::kUnloadTesterAppId, kAppVersion,
108 chre::NanoappPermissions::CHRE_PERMS_NONE);
109