From 9a6f3d638c7378e1d7510789fba8c5c0da0e475f Mon Sep 17 00:00:00 2001
From: Davide De Rosa <keeshux@gmail.com>
Date: Tue, 19 Mar 2019 23:08:38 +0100
Subject: [PATCH] Recognize "--compress lzo" option as legal

---
 TunnelKit/Sources/Core/ConfigurationParser.swift  | 15 +++++++++++----
 .../Sources/Core/SessionProxy+PushReply.swift     | 14 ++++++++------
 2 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/TunnelKit/Sources/Core/ConfigurationParser.swift b/TunnelKit/Sources/Core/ConfigurationParser.swift
index 0a3ef19..0790ca1 100644
--- a/TunnelKit/Sources/Core/ConfigurationParser.swift
+++ b/TunnelKit/Sources/Core/ConfigurationParser.swift
@@ -315,10 +315,17 @@ public class ConfigurationParser {
                 isHandled = true
                 compressionFraming = .compress
 
-                guard $0.isEmpty else {
-                    compressionAlgorithm = .other
-                    unsupportedError = .unsupportedConfiguration(option: line)
-                    return
+                if !LZOIsSupported() {
+                    guard $0.isEmpty else {
+                        unsupportedError = .unsupportedConfiguration(option: line)
+                        return
+                    }
+                } else {
+                    if let arg = $0.first {
+                        compressionAlgorithm = (arg == "lzo") ? .LZO : .other
+                    } else {
+                        compressionAlgorithm = .disabled
+                    }
                 }
             }
             Regex.keyDirection.enumerateArguments(in: line) {
diff --git a/TunnelKit/Sources/Core/SessionProxy+PushReply.swift b/TunnelKit/Sources/Core/SessionProxy+PushReply.swift
index 8d4baa0..af2282d 100644
--- a/TunnelKit/Sources/Core/SessionProxy+PushReply.swift
+++ b/TunnelKit/Sources/Core/SessionProxy+PushReply.swift
@@ -395,18 +395,20 @@ extension SessionProxy {
                 switch $0[0] {
                 case "comp-lzo":
                     compressionFraming = .compLZO
-                    if !(($0.count == 2) && ($0[1] == "no")) {
-                        compressionAlgorithm = .LZO
-                    } else {
+                    if ($0.count == 2) && ($0[1] == "no") {
                         compressionAlgorithm = .disabled
+                    } else {
+                        compressionAlgorithm = .LZO
                     }
                     
                 case "compress":
                     compressionFraming = .compress
-                    if $0.count > 1 {
-                        compressionAlgorithm = .other
-                    } else {
+                    if $0.count == 1 {
                         compressionAlgorithm = .disabled
+                    } else if ($0.count == 2) && ($0[1] == "lzo") {
+                        compressionAlgorithm = .LZO
+                    } else {
+                        compressionAlgorithm = .other
                     }
 
                 default: