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https://github.com/Divested-Mobile/DivestOS-Build.git
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69 lines
3.3 KiB
Diff
69 lines
3.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Songchun Fan <schfan@google.com>
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Date: Mon, 14 Aug 2023 15:24:11 -0700
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Subject: [PATCH] verify ringtone URI before setting
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Similar to ag/24422287, but the same URI verification should be done in
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SettingsProvider as well, which can be called by apps via
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Settings.System API or ContentProvider APIs without using
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RingtoneManager.
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BUG: 227201030
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Test: manual with a test app. Will add a CTS test.
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(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:1b234678ec122994ccbfc52ac48aafdad7fdb1ed)
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Merged-In: Ic0ffa1db14b5660d02880b632a7f2ad9e6e5d84b
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Change-Id: Ic0ffa1db14b5660d02880b632a7f2ad9e6e5d84b
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---
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.../providers/settings/SettingsProvider.java | 31 +++++++++++++++++++
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1 file changed, 31 insertions(+)
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diff --git a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
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index 1a5ef845c9c7..6b04584f6e69 100644
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--- a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
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+++ b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
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@@ -1106,6 +1106,9 @@ public class SettingsProvider extends ContentProvider {
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cacheName = Settings.System.ALARM_ALERT_CACHE;
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}
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if (cacheName != null) {
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+ if (!isValidAudioUri(name, value)) {
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+ return false;
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+ }
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final File cacheFile = new File(
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getRingtoneCacheDir(UserHandle.getCallingUserId()), cacheName);
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cacheFile.delete();
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@@ -1136,6 +1139,34 @@ public class SettingsProvider extends ContentProvider {
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}
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}
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+ private boolean isValidAudioUri(String name, String uri) {
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+ if (uri != null) {
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+ Uri audioUri = Uri.parse(uri);
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+ if (Settings.AUTHORITY.equals(
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+ ContentProvider.getAuthorityWithoutUserId(audioUri.getAuthority()))) {
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+ // Don't accept setting the default uri to self-referential URIs like
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+ // Settings.System.DEFAULT_RINGTONE_URI, which is an alias to the value of this
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+ // setting.
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+ return false;
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+ }
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+ final String mimeType = getContext().getContentResolver().getType(audioUri);
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+ if (mimeType == null) {
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+ Slog.e(LOG_TAG,
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+ "mutateSystemSetting for setting: " + name + " URI: " + audioUri
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+ + " ignored: failure to find mimeType (no access from this context?)");
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+ return false;
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+ }
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+ if (!(mimeType.startsWith("audio/") || mimeType.equals("application/ogg")
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+ || mimeType.equals("application/x-flac"))) {
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+ Slog.e(LOG_TAG,
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+ "mutateSystemSetting for setting: " + name + " URI: " + audioUri
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+ + " ignored: associated mimeType: " + mimeType + " is not an audio type");
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+ return false;
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+ }
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+ }
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+ return true;
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+ }
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+
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private boolean hasWriteSecureSettingsPermission() {
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// Write secure settings is a more protected permission. If caller has it we are good.
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if (getContext().checkCallingOrSelfPermission(Manifest.permission.WRITE_SECURE_SETTINGS)
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