From ae330dc0b5219100f5830194274644d511a57716 Mon Sep 17 00:00:00 2001
From: Simone Margaritelli <evilsocket@gmail.com>
Date: Fri, 1 Nov 2019 12:12:37 +0100
Subject: [PATCH] fix: don't reset network interfaces configuration if not
 needed (closes #483)

---
 setup.py | 42 ++++++++++++++++++++++++++++--------------
 1 file changed, 28 insertions(+), 14 deletions(-)

diff --git a/setup.py b/setup.py
index fe58a73..906dcfd 100644
--- a/setup.py
+++ b/setup.py
@@ -5,25 +5,39 @@ import os
 import glob
 import shutil
 
-setup_path = os.path.dirname(__file__)
-data_path = os.path.join(setup_path, "builder/data")
 
-for source_filename in glob.glob("%s/**" % data_path, recursive=True):
-    if os.path.isfile(source_filename):
-        dest_filename = source_filename.replace(data_path, '')
+def install_file(source_filename, dest_filename):
+    # do not overwrite network configuration if it exists already
+    # https://github.com/evilsocket/pwnagotchi/issues/483
+    if dest_filename.startswith('/etc/network/interfaces.d/') and os.path.exists(dest_filename):
+        print("%s exists, skipping ..." % dest_filename)
+        return
+
+    print("installing %s to %s ..." % (source_filename, dest_filename))
+    try:
         dest_folder = os.path.dirname(dest_filename)
+        if not os.path.isdir(dest_folder):
+            os.makedirs(dest_folder)
 
-        print("installing %s to %s ..." % (source_filename, dest_filename))
-        try:
-            if not os.path.isdir(dest_folder):
-                os.makedirs(dest_folder)
+        shutil.copyfile(source_filename, dest_filename)
+    except Exception as e:
+        print("error installing %s: %s" % (source_filename, e))
 
-            shutil.copyfile(source_filename, dest_filename)
-        except Exception as e:
-            print("error installing %s: %s" % (source_filename, e))
 
-# reload systemd units
-os.system("systemctl daemon-reload")
+def install_system_files():
+    setup_path = os.path.dirname(__file__)
+    data_path = os.path.join(setup_path, "builder/data")
+
+    for source_filename in glob.glob("%s/**" % data_path, recursive=True):
+        if os.path.isfile(source_filename):
+            dest_filename = source_filename.replace(data_path, '')
+            install_file(source_filename, dest_filename)
+
+    # reload systemd units
+    os.system("systemctl daemon-reload")
+
+
+install_system_files()
 
 required = []
 with open('requirements.txt') as fp: