WIP: Fix compile

Author: mikooomich

app/src/main/java/org/schabi/newpipe/player/mediabrowser/PackageValidator.kt

@@ -147,16 +147,18 @@ internal class PackageValidator(context: Context) {
     private fun buildCallerInfo(callingPackage: String): CallerPackageInfo? {
         val packageInfo = getPackageInfo(callingPackage) ?: return null
 
-        val appName = packageInfo.applicationInfo.loadLabel(packageManager).toString()
-        val uid = packageInfo.applicationInfo.uid
+        val appName = packageInfo.applicationInfo?.loadLabel(packageManager).toString()
+        val uid = packageInfo.applicationInfo?.uid ?: -1
         val signature = getSignature(packageInfo)
 
         val requestedPermissions = packageInfo.requestedPermissions
         val permissionFlags = packageInfo.requestedPermissionsFlags
         val activePermissions = mutableSetOf<String>()
-        requestedPermissions?.forEachIndexed { index, permission ->
-            if (permissionFlags[index] and REQUESTED_PERMISSION_GRANTED != 0) {
-                activePermissions += permission
+        if (permissionFlags != null) {
+            requestedPermissions?.forEachIndexed { index, permission ->
+                if (permissionFlags[index] and REQUESTED_PERMISSION_GRANTED != 0) {
+                    activePermissions += permission
+                }
             }
         }
 
@@ -189,12 +191,12 @@ internal class PackageValidator(context: Context) {
      */
     @Suppress("deprecation")
     private fun getSignature(packageInfo: PackageInfo): String? =
-        if (packageInfo.signatures == null || packageInfo.signatures.size != 1) {
+        if (packageInfo.signatures == null || packageInfo.signatures!!.size != 1) {
             // Security best practices dictate that an app should be signed with exactly one (1)
             // signature. Because of this, if there are multiple signatures, reject it.
             null
         } else {
-            val certificate = packageInfo.signatures[0].toByteArray()
+            val certificate = packageInfo.signatures!![0].toByteArray()
             getSignatureSha256(certificate)
         }