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Merge "Private DNS: Extract host verification code"

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This commit is contained in:
Eran Messeri
2018-10-17 16:59:57 +00:00
committed by Android (Google) Code Review
parent cb6b34e893 7ba739ba14
commit 54fca28215
1 changed files with 2 additions and 20 deletions
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22
src/com/android/settings/network/PrivateDnsModeDialogPreference.java
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@@ -27,6 +27,7 @@ import android.content.ContentResolver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.NetworkUtils;
import android.provider.Settings;
import android.system.Os;
import android.text.Editable;
@@ -72,8 +73,6 @@ public class PrivateDnsModeDialogPreference extends CustomDialogPreferenceCompat
PRIVATE_DNS_MAP.put(PRIVATE_DNS_MODE_PROVIDER_HOSTNAME, R.id.private_dns_mode_provider);
}
private static final int[] ADDRESS_FAMILIES = new int[] {AF_INET, AF_INET6};
@VisibleForTesting
static final String MODE_KEY = Settings.Global.PRIVATE_DNS_MODE;
@VisibleForTesting
@@ -203,23 +202,6 @@ public class PrivateDnsModeDialogPreference extends CustomDialogPreferenceCompat
updateDialogInfo();
}
private boolean isWeaklyValidatedHostname(String hostname) {
// TODO(b/34953048): Use a validation method that permits more accurate,
// but still inexpensive, checking of likely valid DNS hostnames.
final String WEAK_HOSTNAME_REGEX = "^[a-zA-Z0-9_.-]+$";
if (!hostname.matches(WEAK_HOSTNAME_REGEX)) {
return false;
}
for (int address_family : ADDRESS_FAMILIES) {
if (Os.inet_pton(address_family, hostname) != null) {
return false;
}
}
return true;
}
private Button getSaveButton() {
final AlertDialog dialog = (AlertDialog) getDialog();
if (dialog == null) {
@@ -236,7 +218,7 @@ public class PrivateDnsModeDialogPreference extends CustomDialogPreferenceCompat
final Button saveButton = getSaveButton();
if (saveButton != null) {
saveButton.setEnabled(modeProvider
? isWeaklyValidatedHostname(mEditText.getText().toString())
? NetworkUtils.isWeaklyValidatedHostname(mEditText.getText().toString())
: true);
}
}