1 /*
2 * Copyright (C) 2019 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 <log/log.h>
18 #include <iostream>
19
20 #include "VtsCoreUtil.h"
21
22 namespace testing {
23
24 // Runs "cmd" and attempts to find the specified feature in its
25 // output.
checkSubstringInCommandOutput(const char * cmd,const char * feature)26 bool checkSubstringInCommandOutput(const char* cmd, const char* feature) {
27 bool hasFeature = false;
28 // This is one of the best stable native interface. Calling AIDL directly
29 // would be problematic if the binder interface changes.
30 FILE* p = popen(cmd, "re");
31 if (p) {
32 char* line = NULL;
33 size_t len = 0;
34 __android_log_print(ANDROID_LOG_FATAL, LOG_TAG,
35 "checkSubstringInCommandOutput check with cmd: %s",
36 cmd);
37 while (getline(&line, &len, p) > 0) {
38 // TODO: b/148904287, check if we should match the whole line
39 if (strstr(line, feature)) {
40 hasFeature = true;
41 break;
42 }
43 }
44 pclose(p);
45 } else {
46 __android_log_print(ANDROID_LOG_FATAL, LOG_TAG, "popen failed: %d", errno);
47 _exit(EXIT_FAILURE);
48 }
49 __android_log_print(ANDROID_LOG_INFO, LOG_TAG, "Feature %s: %ssupported",
50 feature, hasFeature ? "" : "not ");
51 return hasFeature;
52 }
53
54 // Runs "pm list features" and attempts to find the specified feature in its
55 // output.
deviceSupportsFeature(const char * feature)56 bool deviceSupportsFeature(const char* feature) {
57 return checkSubstringInCommandOutput("/system/bin/pm list features", feature);
58 }
59
60 } // namespace testing
61