1 files changed, 86 insertions, 0 deletions
diff --git a/src/java/com/android/internal/telephony/metrics/CellularSecurityTransparencyStats.java b/src/java/com/android/internal/telephony/metrics/CellularSecurityTransparencyStats.java
new file mode 100644
index 0000000000..f77474f5c6
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+++ b/src/java/com/android/internal/telephony/metrics/CellularSecurityTransparencyStats.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.internal.telephony.metrics;
+
+import android.telephony.CellularIdentifierDisclosure;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.telephony.TelephonyStatsLog;
+import com.android.telephony.Rlog;
+
+/**
+ * Facilitates writing stats relating to cellular transparency features. Delegates the actual
+ * writing of stats out to {@link TelephonyStatsLog}.
+ */
+public class CellularSecurityTransparencyStats {
+
+    private static final String LOG_TAG = "CellularSecurityTransparencyStats";
+    private static final String LOG_DESCRIPTOR_SIM_MCC = "SIM MCC";
+    private static final String LOG_DESCRIPTOR_SIM_MNC = "SIM MNC";
+    private static final String LOG_DESCRIPTOR_DISCLOSURE_MCC = "disclosure MCC";
+    private static final String LOG_DESCRIPTOR_DISCLOSURE_MNC = "disclosure MNC";
+    private static final int DEFAULT_PLMN_PART = -1;
+
+    /**
+     * Log an identifier disclosure to be written out to {@link TelephonyStatsLog}
+     */
+    public void logIdentifierDisclosure(CellularIdentifierDisclosure disclosure, String simMcc,
+            String simMnc, boolean notificationsEnabled) {
+
+        int mcc = parsePlmnPartOrDefault(simMcc, LOG_DESCRIPTOR_SIM_MCC);
+        int mnc = parsePlmnPartOrDefault(simMnc, LOG_DESCRIPTOR_SIM_MNC);
+
+        int disclosureMcc = DEFAULT_PLMN_PART;
+        int disclosureMnc = DEFAULT_PLMN_PART;
+        String plmn = disclosure.getPlmn();
+        if (plmn != null) {
+            String[] plmnParts = plmn.split("-");
+            if (plmnParts.length == 2) {
+                disclosureMcc = parsePlmnPartOrDefault(plmnParts[0], LOG_DESCRIPTOR_DISCLOSURE_MCC);
+                disclosureMnc = parsePlmnPartOrDefault(plmnParts[1], LOG_DESCRIPTOR_DISCLOSURE_MNC);
+            }
+        }
+
+        writeIdentifierDisclosure(mcc, mnc, disclosureMcc, disclosureMnc,
+                disclosure.getCellularIdentifier(), disclosure.getNasProtocolMessage(),
+                disclosure.isEmergency(), notificationsEnabled);
+
+    }
+
+    private int parsePlmnPartOrDefault(String input, String logDescriptor) {
+        try {
+            return Integer.parseInt(input);
+        } catch (NumberFormatException e) {
+            Rlog.d(LOG_TAG, "Failed to parse " + logDescriptor + ": " + input);
+        }
+
+        return DEFAULT_PLMN_PART;
+    }
+
+    /**
+     * Write identifier disclosure data out to {@link TelephonyStatsLog}. This method is split
+     * out to enable testing, since {@link TelephonyStatsLog} is a final static class.
+     */
+    @VisibleForTesting
+    public void writeIdentifierDisclosure(int mcc, int mnc, int disclosureMcc, int disclosureMnc,
+            int identifier, int protocolMessage, boolean isEmergency,
+            boolean areNotificationsEnabled) {
+        TelephonyStatsLog.write(TelephonyStatsLog.CELLULAR_IDENTIFIER_DISCLOSED, mcc, mnc,
+                disclosureMcc, disclosureMnc, identifier, protocolMessage, isEmergency,
+                areNotificationsEnabled);
+    }
+}