3 files changed, 5 insertions, 0 deletions
diff --git a/app/src/main/java/com/wireguard/config/Attribute.java b/app/src/main/java/com/wireguard/config/Attribute.java
index b35df100..be068e80 100644
--- a/app/src/main/java/com/wireguard/config/Attribute.java
+++ b/app/src/main/java/com/wireguard/config/Attribute.java
@@ -55,6 +55,7 @@ public enum Attribute {
         return TextUtils.join(", ", iterable);
     }
 
+    @Nullable
     public static Attribute match(final CharSequence line) {
         return KEY_MAP.get(SEPARATOR_PATTERN.split(line)[0].toLowerCase());
     }
diff --git a/app/src/main/java/com/wireguard/config/Interface.java b/app/src/main/java/com/wireguard/config/Interface.java
index 6560b764..eea1d18b 100644
--- a/app/src/main/java/com/wireguard/config/Interface.java
+++ b/app/src/main/java/com/wireguard/config/Interface.java
@@ -140,6 +140,8 @@ public class Interface {
 
     public void parse(final String line) {
         final Attribute key = Attribute.match(line);
+        if (key == null)
+            throw new IllegalArgumentException(String.format("Unable to parse line: \"%s\"", line));
         switch (key) {
             case ADDRESS:
                 addAddresses(key.parseList(line));
diff --git a/app/src/main/java/com/wireguard/config/Peer.java b/app/src/main/java/com/wireguard/config/Peer.java
index 2a4f4465..49c8b70e 100644
--- a/app/src/main/java/com/wireguard/config/Peer.java
+++ b/app/src/main/java/com/wireguard/config/Peer.java
@@ -113,6 +113,8 @@ public class Peer {
 
     public void parse(final String line) {
         final Attribute key = Attribute.match(line);
+        if (key == null)
+            throw new IllegalArgumentException(String.format("Unable to parse line: \"%s\"", line));
         switch (key) {
             case ALLOWED_IPS:
                 addAllowedIPs(key.parseList(line));