fix boxtools for rpi

- remove to_cm4
- create replace_in_file

utils.py

@@ -39,7 +39,6 @@ class BoxInfo:
             if ifname.startswith('enp'):
                 self.change_if_names = True
                 ifname = f'eth{int(ifname[3]) - 1}'
-            print(ifname)
             with open(ifdev) as f:
                 self.macaddr[ifname] = addr = f.read().strip().lower()
             if ifname in ('eth0', 'enp1s0'):
@@ -50,7 +49,7 @@ class BoxInfo:
     def get_macaddr(self):
         return self.macaddr.get(self.main_if)
 
-    def read_config(self):
+    def read_config(self, section=None):
         cfgfiles = glob(self.CFGPATH % ('*', self.id))
         if len(cfgfiles) != 1:
             raise ValueError('there must be one and only one single cfgfile %r' % cfgfiles)
@@ -58,6 +57,10 @@ class BoxInfo:
             self.cfgfile = cfgfiles[0]
         parser = ConfigParser()
         parser.read(self.cfgfile)
+        if section:
+            if section in parser.sections():
+                 return dict(parser[section])
+            return None
         return {k: dict(parser[k]) for k in parser.sections()}
 
 
@@ -78,7 +81,7 @@ class MainIf:
     prev_ip = None
 
     def __init__(self):
-        netcfg = get_config('NETWORK')
+        netcfg = BoxInfo().read_config('NETWORK')
         for name, key in netcfg.items():
             if key.startswith(('dhcp', 'wan')):
                 self.name = name