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 "chre/core/wwan_request_manager.h"
18
19 #include "chre/core/event_loop_manager.h"
20 #include "chre/platform/fatal_error.h"
21 #include "chre/platform/log.h"
22 #include "chre/util/system/debug_dump.h"
23
24 namespace chre {
25
init()26 void WwanRequestManager::init() {
27 return mPlatformWwan.init();
28 }
29
getCapabilities()30 uint32_t WwanRequestManager::getCapabilities() {
31 return mPlatformWwan.getCapabilities();
32 }
33
requestCellInfo(Nanoapp * nanoapp,const void * cookie)34 bool WwanRequestManager::requestCellInfo(Nanoapp *nanoapp, const void *cookie) {
35 CHRE_ASSERT(nanoapp);
36
37 bool success = false;
38 if (!mCellInfoRequestingNanoappInstanceId.has_value()) {
39 success = mPlatformWwan.requestCellInfo();
40 if (success) {
41 nanoapp->registerForBroadcastEvent(CHRE_EVENT_WWAN_CELL_INFO_RESULT);
42 mCellInfoRequestingNanoappInstanceId = nanoapp->getInstanceId();
43 mCellInfoRequestingNanoappCookie = cookie;
44 }
45 } else {
46 LOGE("Cell info request made while a request is in flight");
47 }
48
49 return success;
50 }
51
handleCellInfoResult(chreWwanCellInfoResult * result)52 void WwanRequestManager::handleCellInfoResult(chreWwanCellInfoResult *result) {
53 auto callback = [](uint16_t /* eventType */, void *eventData) {
54 auto *cellInfoResult = static_cast<chreWwanCellInfoResult *>(eventData);
55 EventLoopManagerSingleton::get()
56 ->getWwanRequestManager()
57 .handleCellInfoResultSync(cellInfoResult);
58 };
59
60 EventLoopManagerSingleton::get()->deferCallback(
61 SystemCallbackType::WwanHandleCellInfoResult, result, callback);
62 }
63
handleCellInfoResultSync(chreWwanCellInfoResult * result)64 void WwanRequestManager::handleCellInfoResultSync(
65 chreWwanCellInfoResult *result) {
66 if (mCellInfoRequestingNanoappInstanceId.has_value()) {
67 result->cookie = mCellInfoRequestingNanoappCookie;
68 EventLoopManagerSingleton::get()->getEventLoop().postEventOrDie(
69 CHRE_EVENT_WWAN_CELL_INFO_RESULT, result, freeCellInfoResultCallback,
70 mCellInfoRequestingNanoappInstanceId.value());
71 } else {
72 LOGE("Cell info results received unexpectedly");
73 }
74 }
75
logStateToBuffer(DebugDumpWrapper & debugDump) const76 void WwanRequestManager::logStateToBuffer(DebugDumpWrapper &debugDump) const {
77 debugDump.print("\nWWAN:\n");
78 if (mCellInfoRequestingNanoappInstanceId.has_value()) {
79 debugDump.print(" WWAN request pending nanoappId=%" PRIu32 "\n",
80 mCellInfoRequestingNanoappInstanceId.value());
81 }
82 }
83
handleFreeCellInfoResult(chreWwanCellInfoResult * result)84 void WwanRequestManager::handleFreeCellInfoResult(
85 chreWwanCellInfoResult *result) {
86 if (mCellInfoRequestingNanoappInstanceId.has_value()) {
87 Nanoapp *nanoapp =
88 EventLoopManagerSingleton::get()
89 ->getEventLoop()
90 .findNanoappByInstanceId(*mCellInfoRequestingNanoappInstanceId);
91 if (nanoapp != nullptr) {
92 nanoapp->unregisterForBroadcastEvent(CHRE_EVENT_WWAN_CELL_INFO_RESULT);
93 } else {
94 LOGE("Freeing cell info for non-existent nanoapp");
95 }
96
97 mCellInfoRequestingNanoappInstanceId.reset();
98 } else {
99 LOGE("Cell info released with no pending request");
100 }
101
102 mPlatformWwan.releaseCellInfoResult(result);
103 }
104
freeCellInfoResultCallback(uint16_t eventType,void * eventData)105 void WwanRequestManager::freeCellInfoResultCallback(uint16_t eventType,
106 void *eventData) {
107 auto *result = static_cast<chreWwanCellInfoResult *>(eventData);
108 EventLoopManagerSingleton::get()
109 ->getWwanRequestManager()
110 .handleFreeCellInfoResult(result);
111 }
112
113 } // namespace chre
114