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 <conscrypt/compatibility_close_monitor.h>
18
19 #ifndef _WIN32
20 #include <dlfcn.h>
21 #endif
22
23 namespace conscrypt {
24
25 CompatibilityCloseMonitor::acm_create_func CompatibilityCloseMonitor::asyncCloseMonitorCreate =
26 nullptr;
27 CompatibilityCloseMonitor::acm_destroy_func CompatibilityCloseMonitor::asyncCloseMonitorDestroy =
28 nullptr;
29
30 #ifdef CONSCRYPT_UNBUNDLED
31 CompatibilityCloseMonitor::acm_ctor_func CompatibilityCloseMonitor::asyncCloseMonitorConstructor =
32 nullptr;
33 CompatibilityCloseMonitor::acm_dtor_func CompatibilityCloseMonitor::asyncCloseMonitorDestructor =
34 nullptr;
35 #endif // CONSCRYPT_UNBUNDLED
36
init()37 void CompatibilityCloseMonitor::init() {
38 #ifndef _WIN32
39 void *lib = dlopen("libandroidio.so", RTLD_NOW);
40 if (lib != nullptr) {
41 asyncCloseMonitorCreate = (acm_create_func) dlsym(lib, "async_close_monitor_create");
42 asyncCloseMonitorDestroy = (acm_destroy_func) dlsym(lib, "async_close_monitor_destroy");
43 return;
44 }
45 #ifdef CONSCRYPT_UNBUNDLED
46 // Only attempt to initialise the legacy C++ API if the C API symbols were not found.
47 lib = dlopen("libjavacore.so", RTLD_NOW);
48 if (lib != nullptr) {
49 if (asyncCloseMonitorCreate == nullptr) {
50 asyncCloseMonitorConstructor =
51 (acm_ctor_func)dlsym(lib, "_ZN24AsynchronousCloseMonitorC1Ei");
52 asyncCloseMonitorDestructor =
53 (acm_dtor_func)dlsym(lib, "_ZN24AsynchronousCloseMonitorD1Ev");
54 }
55 }
56 #endif // CONSCRYPT_UNBUNDLED
57 #endif // _WIN32
58 }
59 } // namespace conscrypt
60