From 050b79975b1a8031acbab61cdd2b2c220efc4217 Mon Sep 17 00:00:00 2001
From: Dan Cashman <dcashman@google.com>
Date: Tue, 6 Feb 2018 17:08:58 -0800
Subject: [PATCH] PackageInfo: add Parcel read/write for cert history.

commit: 5cdda3425ccf3c62e400a1646615f4479a8266af added a new flag,
GET_SIGNING_CERTIFICATES to PackageManager for use with getPackageInfo
that returns the signing certificate history, including the current signer,
of the given package.  This is intended to replace the existing
GET_SIGNATURES flag and corresponding field.  The previous commit did not,
however, implement the read/write Parcelable methods so that this
information could be reconstructed client side.  Implement those methods
to actually expose the new API.

Bug: 64686581
Test: Test app pull of PackageInfo with GET_SIGNING_CERTIFICATES succeeds.
Change-Id: I1c023da2a6fd03e11432953080045a79b9f56839
---
 core/java/android/content/pm/PackageInfo.java | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/core/java/android/content/pm/PackageInfo.java b/core/java/android/content/pm/PackageInfo.java
index 09a46b8acf4ba..0342c93bb34ff 100644
--- a/core/java/android/content/pm/PackageInfo.java
+++ b/core/java/android/content/pm/PackageInfo.java
@@ -468,6 +468,18 @@ public class PackageInfo implements Parcelable {
         dest.writeBoolean(mOverlayIsStatic);
         dest.writeInt(compileSdkVersion);
         dest.writeString(compileSdkVersionCodename);
+        writeSigningCertificateHistoryToParcel(dest, parcelableFlags);
+    }
+
+    private void writeSigningCertificateHistoryToParcel(Parcel dest, int parcelableFlags) {
+        if (signingCertificateHistory != null) {
+            dest.writeInt(signingCertificateHistory.length);
+            for (int i = 0; i < signingCertificateHistory.length; i++) {
+                dest.writeTypedArray(signingCertificateHistory[i], parcelableFlags);
+            }
+        } else {
+            dest.writeInt(-1);
+        }
     }
 
     public static final Parcelable.Creator<PackageInfo> CREATOR
@@ -523,6 +535,7 @@ public class PackageInfo implements Parcelable {
         mOverlayIsStatic = source.readBoolean();
         compileSdkVersion = source.readInt();
         compileSdkVersionCodename = source.readString();
+        readSigningCertificateHistoryFromParcel(source);
 
         // The component lists were flattened with the redundant ApplicationInfo
         // instances omitted.  Distribute the canonical one here as appropriate.
@@ -534,6 +547,16 @@ public class PackageInfo implements Parcelable {
         }
     }
 
+    private void readSigningCertificateHistoryFromParcel(Parcel source) {
+        int len = source.readInt();
+        if (len != -1) {
+            signingCertificateHistory = new Signature[len][];
+            for (int i = 0; i < len; i++) {
+                signingCertificateHistory[i] = source.createTypedArray(Signature.CREATOR);
+            }
+        }
+    }
+
     private void propagateApplicationInfo(ApplicationInfo appInfo, ComponentInfo[] components) {
         if (components != null) {
             for (ComponentInfo ci : components) {