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 //#define LOG_NDEBUG 0
18 #define LOG_TAG "PluginMetricsReporting"
19
20 #include <media/PluginMetricsReporting.h>
21
22 #include <inttypes.h>
23
24 #include <media/MediaMetrics.h>
25 #include <utils/Log.h>
26
27
28 namespace android {
29
30 namespace {
31
32 constexpr char kSerializedMetricsField[] = "serialized_metrics";
33
reportVendorMetrics(const std::string & metrics,const String8 & name,uid_t appUid)34 status_t reportVendorMetrics(const std::string& metrics,
35 const String8& name,
36 uid_t appUid) {
37 mediametrics_handle_t analyticsItem(mediametrics_create(name.c_str()));
38 mediametrics_setUid(analyticsItem, appUid);
39 if (metrics.size() > 0) {
40 mediametrics_setCString(analyticsItem, kSerializedMetricsField, metrics.c_str());
41 }
42
43 if (!mediametrics_selfRecord(analyticsItem)) {
44 ALOGE("%s: selfrecord() returned false", __func__);
45 }
46
47 mediametrics_delete(analyticsItem);
48 return OK;
49 }
50
sanitize(const String8 & input)51 String8 sanitize(const String8& input) {
52 // Filters the input string down to just alphanumeric characters.
53 String8 output;
54 for (size_t i = 0; i < input.size(); ++i) {
55 char candidate = input[i];
56 if ((candidate >= 'a' && candidate <= 'z') ||
57 (candidate >= 'A' && candidate <= 'Z') ||
58 (candidate >= '0' && candidate <= '9')) {
59 output.append(&candidate, 1);
60 }
61 }
62 return output;
63 }
64
65 } // namespace
66
reportDrmPluginMetrics(const std::string & b64EncodedMetrics,const String8 & vendor,const String8 & description,uid_t appUid)67 status_t reportDrmPluginMetrics(const std::string& b64EncodedMetrics,
68 const String8& vendor,
69 const String8& description,
70 uid_t appUid) {
71
72 String8 name = String8::format("drm.vendor.%s.%s",
73 sanitize(vendor).c_str(),
74 sanitize(description).c_str());
75
76 return reportVendorMetrics(b64EncodedMetrics, name, appUid);
77 }
78
79 } // namespace android
80