private static String computePackageSignatureHash(PackageInfo packageInfo) {
String signatureHash = "";
final Signature[] sigs = packageInfo.signatures;
try {
final MessageDigest messageDigest = MessageDigest.getInstance("SHA-1");
for (Signature s : sigs) {
messageDigest.update(s.toByteArray());
}
signatureHash = StringBuilderUtils.bytesToHexString(messageDigest.digest());
} catch (NoSuchAlgorithmException e) {
LogUtils.log(CustomLabelManager.class, Log.WARN, "Unable to create SHA-1 MessageDigest");
}
return signatureHash;
}
/**
* Creates a {@link Label} and persists it to the label database, and refreshes the label cache.
*
* @param resourceName The fully-qualified resource identifier, such as
* "com.android.deskclock:id/analog_appwidget", as provided by {@link
* AccessibilityNodeInfo#getViewIdResourceName()}
* @param userLabel The label provided for the node by the user
*/
public void addLabel(String resourceName, String userLabel) {
if (!isInitialized()) {
return;
}
final String finalLabel;
if (userLabel == null) {
throw new IllegalArgumentException("Attempted to add a label with a null userLabel value");
} else {
finalLabel = userLabel.trim();
if (TextUtils.isEmpty(finalLabel)) {
throw new IllegalArgumentException(
"Attempted to add a label with an empty userLabel value");
}
}
Pair<String, String> parsedId = splitResourceName(resourceName);
if (parsedId == null) {
LogUtils.log(
this, Log.WARN, "Attempted to add a label with an invalid or poorly formed view ID.");
return;
}
final PackageInfo packageInfo;
try {
packageInfo = mPackageManager.getPackageInfo(parsedId.first, PackageManager.GET_SIGNATURES);
} catch (NameNotFoundException e) {
LogUtils.log(this, Log.WARN, "Attempted to add a label for an unknown package.");
return;
}
final String locale = Locale.getDefault().toString();
final int version = packageInfo.versionCode;
final long timestamp = System.currentTimeMillis();
String signatureHash = "";
final Signature[] sigs = packageInfo.signatures;
try {
final MessageDigest messageDigest = MessageDigest.getInstance("SHA-1");
for (Signature s : sigs) {
messageDigest.update(s.toByteArray());
}
signatureHash = StringBuilderUtils.bytesToHexString(messageDigest.digest());
} catch (NoSuchAlgorithmException e) {
LogUtils.log(this, Log.WARN, "Unable to create SHA-1 MessageDigest");
}
// For the current implementation, screenshots are disabled
final String screenshotPath = "";
final Label label =
new Label(
parsedId.first,
signatureHash,
parsedId.second,
finalLabel,
locale,
version,
screenshotPath,
timestamp);
final LabelAddRequest request = new LabelAddRequest(label, null);
final LabelAddTask task = new LabelAddTask();
task.execute(request);
}
