Correct capacity argument when casting memory to sockaddr_* type.

The capacity argument indicates the number of instances of sockaddr_* and not
number of bytes within the pointer.

Signed-off-by: Andrej Mihajlov <and@mullvad.net>

Sources/WireGuardKit/IPAddress+AddrInfo.swift

@@ -8,7 +8,10 @@ extension IPv4Address {
     init?(addrInfo: addrinfo) {
         guard addrInfo.ai_family == AF_INET else { return nil }
 
-        let addressData = addrInfo.ai_addr.withMemoryRebound(to: sockaddr_in.self, capacity: MemoryLayout<sockaddr_in>.size) { ptr -> Data in
+        let addressData = addrInfo.ai_addr.withMemoryRebound(
+            to: sockaddr_in.self,
+            capacity: 1
+        ) { ptr -> Data in
             return Data(bytes: &ptr.pointee.sin_addr, count: MemoryLayout<in_addr>.size)
         }
 
@@ -20,7 +23,10 @@ extension IPv6Address {
     init?(addrInfo: addrinfo) {
         guard addrInfo.ai_family == AF_INET6 else { return nil }
 
-        let addressData = addrInfo.ai_addr.withMemoryRebound(to: sockaddr_in6.self, capacity: MemoryLayout<sockaddr_in6>.size) { ptr -> Data in
+        let addressData = addrInfo.ai_addr.withMemoryRebound(
+            to: sockaddr_in6.self,
+            capacity: 1
+        ) { ptr -> Data in
             return Data(bytes: &ptr.pointee.sin6_addr, count: MemoryLayout<in6_addr>.size)
         }
 

Sources/WireGuardKit/IPAddressRange.swift

@@ -27,29 +27,6 @@ extension IPAddressRange: Hashable {
     }
 }
 
-extension IPAddressRange: Codable {
-    public func encode(to encoder: Encoder) throws {
-        var container = encoder.singleValueContainer()
-
-        try container.encode(self.stringRepresentation)
-    }
-
-    public init(from decoder: Decoder) throws {
-        let container = try decoder.singleValueContainer()
-        let value = try container.decode(String.self)
-
-        if let ipAddressRange = IPAddressRange(from: value) {
-            self = ipAddressRange
-        } else {
-            let context = DecodingError.Context(
-                codingPath: container.codingPath,
-                debugDescription: "Invalid IPAddressRange representation"
-            )
-            throw DecodingError.dataCorrupted(context)
-        }
-    }
-}
-
 extension IPAddressRange {
     public var stringRepresentation: String {
         return "\(address)/\(networkPrefixLength)"