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 "chre/platform/platform_nanoapp.h"
18
19 #include <cinttypes>
20 #include <dlfcn.h>
21
22 #include "chre_api/chre/version.h"
23 #include "chre/platform/assert.h"
24 #include "chre/platform/log.h"
25 #include "chre/platform/shared/nanoapp_dso_util.h"
26
27 namespace chre {
28
~PlatformNanoapp()29 PlatformNanoapp::~PlatformNanoapp() {
30 closeNanoapp();
31 }
32
start()33 bool PlatformNanoapp::start() {
34 return openNanoapp() && mAppInfo->entryPoints.start();
35 }
36
handleEvent(uint32_t senderInstanceId,uint16_t eventType,const void * eventData)37 void PlatformNanoapp::handleEvent(uint32_t senderInstanceId,
38 uint16_t eventType,
39 const void *eventData) {
40 mAppInfo->entryPoints.handleEvent(senderInstanceId, eventType, eventData);
41 }
42
end()43 void PlatformNanoapp::end() {
44 mAppInfo->entryPoints.end();
45 closeNanoapp();
46 }
47
getAppId() const48 uint64_t PlatformNanoapp::getAppId() const {
49 return (mAppInfo == nullptr) ? 0 : mAppInfo->appId;
50 }
51
getAppVersion() const52 uint32_t PlatformNanoapp::getAppVersion() const {
53 return mAppInfo->appVersion;
54 }
55
getTargetApiVersion() const56 uint32_t PlatformNanoapp::getTargetApiVersion() const {
57 return CHRE_API_VERSION;
58 }
59
isSystemNanoapp() const60 bool PlatformNanoapp::isSystemNanoapp() const {
61 return (mAppInfo != nullptr && mAppInfo->isSystemNanoapp);
62 }
63
logStateToBuffer(char * buffer,size_t * bufferPos,size_t bufferSize) const64 void PlatformNanoapp::logStateToBuffer(char *buffer, size_t *bufferPos,
65 size_t bufferSize) const {}
66
loadFromFile(const std::string & filename)67 void PlatformNanoappBase::loadFromFile(const std::string& filename) {
68 CHRE_ASSERT(!isLoaded());
69 mFilename = filename;
70 }
71
loadStatic(const struct chreNslNanoappInfo * appInfo)72 void PlatformNanoappBase::loadStatic(const struct chreNslNanoappInfo *appInfo) {
73 CHRE_ASSERT(!isLoaded());
74 mIsStatic = true;
75 mAppInfo = appInfo;
76 }
77
isLoaded() const78 bool PlatformNanoappBase::isLoaded() const {
79 return (mIsStatic || mDsoHandle != nullptr);
80 }
81
openNanoapp()82 bool PlatformNanoappBase::openNanoapp() {
83 bool success = false;
84
85 if (mIsStatic) {
86 success = true;
87 } else if (!mFilename.empty()) {
88 success = openNanoappFromFile();
89 } else {
90 CHRE_ASSERT(false);
91 }
92
93 return success;
94 }
95
openNanoappFromFile()96 bool PlatformNanoappBase::openNanoappFromFile() {
97 CHRE_ASSERT(!mFilename.empty());
98 CHRE_ASSERT_LOG(mDsoHandle == nullptr, "Re-opening nanoapp");
99 bool success = false;
100
101 mDsoHandle = dlopen(mFilename.c_str(), RTLD_NOW | RTLD_GLOBAL);
102 if (mDsoHandle == nullptr) {
103 LOGE("Failed to load nanoapp from file %s: %s",
104 mFilename.c_str(), dlerror());
105 } else {
106 mAppInfo = static_cast<const struct chreNslNanoappInfo *>(
107 dlsym(mDsoHandle, CHRE_NSL_DSO_NANOAPP_INFO_SYMBOL_NAME));
108 if (mAppInfo == nullptr) {
109 LOGE("Failed to find app info symbol in %s: %s",
110 mFilename.c_str(), dlerror());
111 } else {
112 // TODO(b/120778991): reenable this check after adding support for passing
113 // in the .napp_header to the simulator
114 //success = validateAppInfo(0 /* skip ID validation */, 0, mAppInfo);
115 success = true;
116 if (!success) {
117 mAppInfo = nullptr;
118 } else {
119 LOGI("Successfully loaded nanoapp %s (0x%016" PRIx64 ") version 0x%"
120 PRIx32 " uimg %d system %d from file %s", mAppInfo->name,
121 mAppInfo->appId, mAppInfo->appVersion, mAppInfo->isTcmNanoapp,
122 mAppInfo->isSystemNanoapp, mFilename.c_str());
123 }
124 }
125 }
126
127 return success;
128 }
129
closeNanoapp()130 void PlatformNanoappBase::closeNanoapp() {
131 if (mDsoHandle != nullptr) {
132 mAppInfo = nullptr;
133 if (dlclose(mDsoHandle) != 0) {
134 LOGE("dlclose failed: %s", dlerror());
135 }
136 mDsoHandle = nullptr;
137 }
138 }
139
140 } // namespace chre
141