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202033c013
This adds 3 expat patches for n-asb-2022-09 from https://github.com/syphyr/android_external_expat/commits/cm-14.1 and also applies 2 of them to 15.1 Signed-off-by: Tad <tad@spotco.us>
64 lines
2.6 KiB
Diff
64 lines
2.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Rhed Jao <rhedjao@google.com>
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Date: Fri, 30 Jul 2021 15:52:05 +0800
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Subject: [PATCH] DO NOT MERGE Apply a maximum char count to the load label api
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The system is overwhelmed by an enormous label string returned by
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the load label api. This cl truncates the label string if it exceeds
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the maximum safe length.
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Also update the max safe label length to 1000 characters, which is
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enough.
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Bug: 67013844
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Test: atest PackageManagerTest
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Change-Id: Ia4d768cc93a47cfb8b6f7c4b6dc73abd801809bd
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Merged-in: Ia4d768cc93a47cfb8b6f7c4b6dc73abd801809bd
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(cherry picked from commit 7380c153b97bfa38a0dfa9cccc71062f6d6bd6f4)
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---
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.../android/content/pm/PackageItemInfo.java | 17 ++++++++++++++++-
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1 file changed, 16 insertions(+), 1 deletion(-)
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diff --git a/core/java/android/content/pm/PackageItemInfo.java b/core/java/android/content/pm/PackageItemInfo.java
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index 73ae83e32f68..4ce6a8db2f3f 100644
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--- a/core/java/android/content/pm/PackageItemInfo.java
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+++ b/core/java/android/content/pm/PackageItemInfo.java
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@@ -47,7 +47,7 @@ import java.util.Comparator;
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public class PackageItemInfo {
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private static final float MAX_LABEL_SIZE_PX = 500f;
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/** The maximum length of a safe label, in characters */
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- private static final int MAX_SAFE_LABEL_LENGTH = 50000;
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+ private static final int MAX_SAFE_LABEL_LENGTH = 1000;
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/**
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* Public name of this item. From the "android:name" attribute.
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@@ -135,6 +135,12 @@ public class PackageItemInfo {
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* item does not have a label, its name is returned.
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*/
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public CharSequence loadLabel(PackageManager pm) {
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+ // Trims the label string to the MAX_SAFE_LABEL_LENGTH. This is to prevent that the
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+ // system is overwhelmed by an enormous string returned by the application.
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+ return trimToSize(loadUnsafeLabel(pm), MAX_SAFE_LABEL_LENGTH);
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+ }
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+
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+ private CharSequence loadUnsafeLabel(PackageManager pm) {
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if (nonLocalizedLabel != null) {
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return nonLocalizedLabel;
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}
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@@ -212,6 +218,15 @@ public class PackageItemInfo {
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TextUtils.TruncateAt.END);
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}
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+ private CharSequence trimToSize(CharSequence label, int size) {
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+ if (TextUtils.isEmpty(label) || label.length() <= size) return label;
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+ if (Character.isHighSurrogate(label.charAt(size - 1))
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+ && Character.isLowSurrogate(label.charAt(size))) {
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+ size = size - 1;
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+ }
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+ return label.subSequence(0, size);
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+ }
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+
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/**
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* Retrieve the current graphical icon associated with this item. This
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* will call back on the given PackageManager to load the icon from
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