From 3ad98b8403d9941c3f13e8841d546648b375d056 Mon Sep 17 00:00:00 2001
From: DcruBro <info@dcrubro.com>
Date: Thu, 13 Nov 2025 16:04:39 +0100
Subject: [PATCH] root permissions check and version counter update

---
 CMakeLists.txt                   | 2 +-
 src/common/utils.cpp             | 2 +-
 src/common/virtual_interface.cpp | 5 ++++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 53fc39d..1344026 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ cmake_minimum_required(VERSION 3.16)
 # If MAJOR is 0, and MINOR > 0, Version is BETA
 
 project(ColumnLynx
-    VERSION 0.0.3
+    VERSION 0.0.4
     LANGUAGES CXX
 )
 
diff --git a/src/common/utils.cpp b/src/common/utils.cpp
index 7003ebf..c62b6ec 100644
--- a/src/common/utils.cpp
+++ b/src/common/utils.cpp
@@ -37,7 +37,7 @@ namespace ColumnLynx::Utils {
     }
 
     std::string getVersion() {
-        return "a0.3";
+        return "a0.4";
     }
 
     unsigned short serverPort() {
diff --git a/src/common/virtual_interface.cpp b/src/common/virtual_interface.cpp
index 76a0c67..953bd27 100644
--- a/src/common/virtual_interface.cpp
+++ b/src/common/virtual_interface.cpp
@@ -42,8 +42,11 @@ namespace ColumnLynx::Net {
         sc.sc_id = ctlInfo.ctl_id;
         sc.sc_unit = 0; // utun0 (0 = auto-assign)
 
-        if (connect(mFd, (struct sockaddr*)&sc, sizeof(sc)) < 0)
+        if (connect(mFd, (struct sockaddr*)&sc, sizeof(sc)) < 0) {
+            if (errno == EPERM)
+                throw std::runtime_error("connect(AF_SYS_CONTROL) failed: Insufficient permissions (try running as root)");
             throw std::runtime_error("connect(AF_SYS_CONTROL) failed: " + std::string(strerror(errno)));
+        }
 
         // Retrieve actual utun device name
         struct sockaddr_storage addr;