DivestOS/Patches/LineageOS-15.1/android_frameworks_base/373955.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Songchun Fan <schfan@google.com>
Date: Mon, 14 Aug 2023 15:24:11 -0700
Subject: [PATCH] verify ringtone URI before setting
Similar to ag/24422287, but the same URI verification should be done in
SettingsProvider as well, which can be called by apps via
Settings.System API or ContentProvider APIs without using
RingtoneManager.
BUG: 227201030
Test: manual with a test app. Will add a CTS test.
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:1b234678ec122994ccbfc52ac48aafdad7fdb1ed)
Merged-In: Ic0ffa1db14b5660d02880b632a7f2ad9e6e5d84b
Change-Id: Ic0ffa1db14b5660d02880b632a7f2ad9e6e5d84b
---
.../providers/settings/SettingsProvider.java | 31 +++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
index a3dc435e5371..a1c6c60a976d 100644
--- a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
+++ b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
@@ -1407,6 +1407,9 @@ public class SettingsProvider extends ContentProvider {
cacheName = Settings.System.ALARM_ALERT_CACHE;
}
if (cacheName != null) {
+ if (!isValidAudioUri(name, value)) {
+ return false;
+ }
final File cacheFile = new File(
getRingtoneCacheDir(owningUserId), cacheName);
cacheFile.delete();
@@ -1439,6 +1442,34 @@ public class SettingsProvider extends ContentProvider {
}
}
+ private boolean isValidAudioUri(String name, String uri) {
+ if (uri != null) {
+ Uri audioUri = Uri.parse(uri);
+ if (Settings.AUTHORITY.equals(
+ ContentProvider.getAuthorityWithoutUserId(audioUri.getAuthority()))) {
+ // Don't accept setting the default uri to self-referential URIs like
+ // Settings.System.DEFAULT_RINGTONE_URI, which is an alias to the value of this
+ // setting.
+ return false;
+ }
+ final String mimeType = getContext().getContentResolver().getType(audioUri);
+ if (mimeType == null) {
+ Slog.e(LOG_TAG,
+ "mutateSystemSetting for setting: " + name + " URI: " + audioUri
+ + " ignored: failure to find mimeType (no access from this context?)");
+ return false;
+ }
+ if (!(mimeType.startsWith("audio/") || mimeType.equals("application/ogg")
+ || mimeType.equals("application/x-flac"))) {
+ Slog.e(LOG_TAG,
+ "mutateSystemSetting for setting: " + name + " URI: " + audioUri
+ + " ignored: associated mimeType: " + mimeType + " is not an audio type");
+ return false;
+ }
+ }
+ return true;
+ }
+
private boolean hasWriteSecureSettingsPermission() {
// Write secure settings is a more protected permission. If caller has it we are good.
if (getContext().checkCallingOrSelfPermission(Manifest.permission.WRITE_SECURE_SETTINGS)