make install work also for rpi boxes

- in addition to to_system, we have now to_<box> with every
  type of box
- install is not needed to run under sudo anymore

utils.py

@@ -3,6 +3,7 @@ import socket
 import threading
 import re
 from glob import glob
+from pathlib import Path
 from configparser import ConfigParser
 from netifaces import interfaces, ifaddresses, gateways, AF_INET, AF_LINK
 from subprocess import Popen, PIPE
@@ -19,13 +20,18 @@ else:
         os.system(cmd)
 
 
+class UndefinedConfigFile(Exception):
+    """config file not found or ambiguous"""
+
+
 class BoxInfo:
-    TOOLS = '/home/l_samenv/boxtools'
-    CFGPATH = f'{TOOLS}/cfg/%s_%06x.cfg'
+    TOOLS = Path('/home/l_samenv/boxtools')
+    CFGPATH = str(TOOLS / 'cfg' / '%s_%06x.cfg')
     BOX_TYPES = {
         '00:0d:b9': 'apu',  # bare apu or control box
-        'b8:27:eb': 'cm3',  # iono pi
-        'd8:3a:dd': 'cm4',  # dual-eth-rpi
+        'b8:27:eb': 'cm3',  # guess iono pi max
+        'e4:5f:01': 'ionopi', # guess iono pi
+        'd8:3a:dd': 'cm4',  # guess dual-eth-rpi
     }
 
     def __init__(self):
@@ -50,6 +56,7 @@ class BoxInfo:
                 self.id = int(''.join(addr.split(':')[-3:]), 16) & 0xffffff
                 self.typ = self.BOX_TYPES.get(addr[:8])
                 self.main_if = ifname
+        self.hwtype = self.typ  # this is one of the values in BOX_TYPE and will not change
 
     def get_macaddr(self):
         return self.macaddr.get(self.main_if)
@@ -57,9 +64,9 @@ class BoxInfo:
     def read_config(self, section=None):
         cfgfiles = glob(self.CFGPATH % ('*', self.id))
         if len(cfgfiles) > 1:
-            raise ValueError('ambiguous cfgfile: %r' % cfgfiles)
+            raise AmbiguousConfigFile('ambiguous cfgfile: %r' % cfgfiles)
         if section and not cfgfiles:
-            raise ValueError('no cfg file found for %s' % self.id)
+            raise UndefinedConfigFile('no cfg file found for %s' % self.id)
         if cfgfiles:
             self.cfgfile = cfgfiles[0]
         else:
@@ -141,14 +148,16 @@ class MainIf:
         return self.carrier, self.ip, self.hostnameresult[0], self.gateway
 
 
-def unix_cmd(command, execute=None, stdout=PIPE):
-    if execute != False:  # None or True
+def unix_cmd(cmd, *args, execute=None, stdout=PIPE, sudo=True):
+    command = cmd.split() + list(args)
+    sudo = ['sudo'] if sudo else []
+    if execute is not False:  # None or True
         if execute:
-            print('$ %s' % command)
-        result = Popen(command.split(), stdout=stdout).communicate()[0]
+            print('$', *command)
+        result = Popen(sudo + command, stdout=stdout).communicate()[0]
         return (result or b'').decode()
     else:
-        print('> %s' % command)
+        print('>', *command)
 
 
 def check_service(service, set_on=None, execute=None):
@@ -185,15 +194,12 @@ def change_firewall(set_on, ports, execute=None):
     ports.add(22)  # always add ssh
     active, enabled = check_service('nftables')
     if not set_on:
-        if os.geteuid() == 0:
-            check_service('nftables', False, execute)
-        else:
-            print('need sudo rights to modify firewall')
+        check_service('nftables', False, execute)
         return active or enabled
 
     pattern = re.compile('(tcp dport ({.*}) ct state new accept)', re.MULTILINE | re.DOTALL)
 
-    for filename in FIREWALL_CONF, os.path.join(BoxInfo.TOOLS, 'nftables.conf'):
+    for filename in FIREWALL_CONF, BoxInfo.TOOLS / 'nftables.conf':
         with open(filename) as f:
             content = f.read()