PawletOS/app_Settings
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Allows to launch only authenticator owned activities

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- 3rd party developers can define himself-authenticator
  and use the accountPreferences attribute to load the
  predefined preference UI.
- If a developer defines an action intent to launch the
  other activity in xml and it would return true due
  to the true exported attribute and no permission.
- To avoid launching arbitrary activity. Here allows
  to launch only authenticator owned activities.

Bug: 150946634
Test: make RunSettingsRoboTests -j ROBOTEST_FILTER=com.android.settings.accounts
Test: PoC app
Change-Id: I5ce1a0b3838db7b3fbe48c6ea23d5f093d625cdb
Merged-In: I5ce1a0b3838db7b3fbe48c6ea23d5f093d625cdb
(cherry picked from commit d6d8f98844)
This commit is contained in:
Sunny Shao
2020-05-11 22:55:05 +08:00
parent c48d63752a
commit c8f92acbfb
1 changed files with 1 additions and 8 deletions
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9
src/com/android/settings/accounts/AccountTypePreferenceLoader.java
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@@ -197,14 +197,7 @@ public class AccountTypePreferenceLoader {
ActivityInfo resolvedActivityInfo = resolveInfo.activityInfo; ActivityInfo resolvedActivityInfo = resolveInfo.activityInfo;
ApplicationInfo resolvedAppInfo = resolvedActivityInfo.applicationInfo; ApplicationInfo resolvedAppInfo = resolvedActivityInfo.applicationInfo;
try { try {
if (resolvedActivityInfo.exported) { // Allows to launch only authenticator owned activities.
if (resolvedActivityInfo.permission == null) {
return true; // exported activity without permission.
} else if (pm.checkPermission(resolvedActivityInfo.permission,
authDesc.packageName) == PackageManager.PERMISSION_GRANTED) {
return true;
}
}
ApplicationInfo authenticatorAppInf = pm.getApplicationInfo(authDesc.packageName, 0); ApplicationInfo authenticatorAppInf = pm.getApplicationInfo(authDesc.packageName, 0);
return resolvedAppInfo.uid == authenticatorAppInf.uid; return resolvedAppInfo.uid == authenticatorAppInf.uid;
} catch (NameNotFoundException e) { } catch (NameNotFoundException e) {