637 lines
20 KiB
Python
Executable File
637 lines
20 KiB
Python
Executable File
#!/usr/bin/python3
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"""install.py
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- copy files from to_system into system directories
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- set host name / network settings from boxtools/cfg file
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- and many more
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"""
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if bytes == str:
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raise NotImplementedError('python2 not supported')
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import sys
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import os
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import filecmp
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import shutil
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import re
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import types
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import socket
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from subprocess import Popen, PIPE
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from ipaddress import IPv4Interface
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from os.path import join, getmtime, exists, basename
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if os.geteuid() != 0:
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exit("You need to have root privileges to run this script.\nPlease try again, this time using 'sudo'. Exiting.")
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def exit():
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print('please restart sudo ./install.py again')
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sys.exit()
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try:
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import serial
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except ImportError:
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if 'yes'.startswith(input('install pyserial? [y]')):
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os.system('pip3 install --break-system-packages pyserial')
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serial = None
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try:
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from utils import BoxInfo, check_service, unix_cmd, change_firewall
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except ImportError:
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if 'yes'.startswith(input('install netifaces? [y]')):
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os.system('pip3 install --break-system-packages netifaces')
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serial = None
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if serial is None:
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print('please restart sudo ./install.py again')
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exit()
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TOOLS = BoxInfo.TOOLS
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more_info = False
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DEL = '__to_delete__'
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STARTUP_TEXT = f'{TOOLS}/startup_display.txt'
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COMMENT = "; please refer to README.md for help"
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CONFIG_TEMPLATE = f"""[NETWORK]
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{COMMENT}
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eth0=wan
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eth1=192.168.2.2
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eth2=192.168.3.3
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eth3=192.168.127.254
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[ROUTER]
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{COMMENT}
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3001=192.168.127.254:3001
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"""
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CONTROLBOX_TEMPLATE = f"""[NETWORK]
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{COMMENT}
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eth0=dhcp
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eth1=192.168.1.1
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eth2=192.168.2.2
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eth3=192.168.3.3
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[DISPLAY]
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{COMMENT}
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line0=startup...
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line1=HOST
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line2=ADDR
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"""
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DHCP_HEADER = """
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default-lease-time 600;
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max-lease-time 7200;
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authoritative;
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"""
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ROUTER_SERVICE = f"""[Unit]
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Description = Routing to locally connected hardware
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After = network.target
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[Service]
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ExecStart = /usr/bin/python3 {TOOLS}/router.py
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[Install]
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WantedBy = multi-user.target
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"""
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FRAPPY_SERVICE = """[Unit]
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Description = Running frappy server
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After = network.target
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[Service]
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User = l_samenv
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ExecStart = /usr/bin/python3 /home/l_samenv/frappy/bin/frappy-server %s
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[Install]
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WantedBy = multi-user.target
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"""
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DISPLAY_SERVICE = f"""[Unit]
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Description = status display
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After = network.target
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[Service]
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User = root
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ExecStart = /usr/bin/python3 {TOOLS}/display.py -d
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[Install]
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WantedBy = multi-user.target
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"""
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pip_requirements = {
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'root': {},
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'l_samenv': {},
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}
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box = BoxInfo()
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box.hostname_changed = False
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dhcp_server_cfg = []
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TO_SYSTEM = [f'{TOOLS}/to_system', f'{TOOLS}/{box.typ}_system']
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def do_cmd(command):
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unix_cmd(command, doit)
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show.dirty = True
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def frappy(cfg=None, port=None, requirements='', **kwds):
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if not cfg:
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return None
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req = pip_requirements['l_samenv']
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req[cfg] = '\n'.join(requirements.split(','))
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if port:
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cfg = '-p %s %s' % (port, cfg)
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with open('/home/l_samenv/frappy/requirements.txt') as f:
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req['frappy main'] = f.read()
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return FRAPPY_SERVICE % cfg
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def router(firewall=False, **opts):
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if firewall:
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active, enabled = check_service('nftables')
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ports = {22}
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if opts:
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for port in firewall.split(','):
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ports.add(int(port))
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for key in opts:
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try:
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ports.add(int(key))
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except ValueError:
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pass
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ports.update((1110, 1111, 1112))
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if change_firewall(True, ports, doit):
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show.dirty = True
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elif change_firewall(False, set(), doit):
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show.dirty = True
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if not opts:
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return None
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try:
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os.remove(join(TO_SYSTEM[0], 'etc/nftables.conf'))
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with open(f'{TOOLS}/requirements.txt') as f:
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pip_requirements['root']['tools'] = f.read()
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except FileNotFoundError:
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pass
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return ROUTER_SERVICE
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def display_update(cfg):
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text = '\n'.join(cfg.get('startup_text', '').split('|')[:3])
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text = text.replace('HOST', box.hostname) \
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.replace('ADDR', box.get_macaddr()) + '\n'
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if write_when_new(STARTUP_TEXT, text):
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print('change startup text')
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if doit:
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os.rename(STARTUP_TEXT, STARTUP_TEXT + '.todo')
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return True
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return False
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def display(**opts):
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if not opts:
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return None
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return DISPLAY_SERVICE
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def pip():
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for user, requirements in pip_requirements.items():
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if user == 'root':
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tmpname = join('/root', 'pip_requirements.tmp')
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pipcmd = 'pip3 install -r %s' % tmpname
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else:
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tmpname = join('/home', user, 'pip_requirements.tmp')
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pipcmd = 'sudo --user %s pip3 install --user -r %s' % (user, tmpname)
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filename = tmpname.replace('.tmp', '.txt')
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content = ''.join('# --- for %s ---\n%s\n' % kv for kv in requirements.items())
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if write_when_new(filename, content, True):
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if doit:
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os.rename(filename, tmpname)
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if os.system(pipcmd) == 0:
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os.rename(tmpname, filename)
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else:
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os.remove(tmpname)
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else:
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print(pipcmd)
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unix_cmd(pipcmd, doit, stdout=None)
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show.dirty = True
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SERVICES = dict(router=router, frappy=frappy, display=display)
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def write_when_new(filename, content, ignore_reduction=False):
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if content is None:
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lines = []
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else:
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if not content.endswith('\n'):
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content += '\n'
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lines = content.split('\n')
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try:
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with open(filename) as fil:
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old = fil.read()
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except FileNotFoundError:
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old = None
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if old == content:
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return False
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if ignore_reduction:
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content_set = set(v for v in lines if not v.startswith('#'))
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old_set = set(v for v in (old or '').split('\n') if not v.startswith('#'))
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content_set -= old_set
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if content_set:
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print(f"missing in {filename}: {(', '.join(content_set - old_set))}")
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else:
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return False
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if doit:
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if lines:
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with open(filename, 'w') as fil:
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fil.write(content)
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else:
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os.remove(filename)
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elif more_info:
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print('.' * 80)
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print('changes in', filename)
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old = [] if old is None else old.split('\n')
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top_lines = 0 # in case of empty loop
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for top_lines, (ol, ll) in enumerate(zip(old, lines)):
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if ol != ll:
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break
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bottom_lines = 0
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for bottom_lines, (ol, ll) in enumerate(zip(reversed(old[top_lines:]), reversed(lines[top_lines:]))):
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if ol != ll:
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break
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if bottom_lines == 0:
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old.append('')
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lines.append('')
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bottom_lines += 1
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print("===")
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print('\n'.join(old[:top_lines]))
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print('<<<')
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print('\n'.join(old[top_lines:-bottom_lines]))
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print('---')
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print('\n'.join(lines[top_lines:-bottom_lines]))
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print('>>>')
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print('\n'.join(old[-bottom_lines:-1]))
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print("===")
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print('.' * 80)
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return content
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def replace_in_file(filename, pat, repl):
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"""find pattern <prev> in content of filename
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find regexp pattern <pat> in content of file
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- if it does not match exactly once, an error is raised
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- exchange group 1 by repl
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- return True when result is changed, or False when not
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doit determines, whether the file is really changed
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"""
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with open(filename) as f:
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content = f.read()
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success = []
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def fun(match, count=[]):
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if success:
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raise ValueError(f'{pat} matches multiple times in {filename}')
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part = match.group(0)
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match = match.re.match(part)
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fr, to = match.span(1)
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result = part[:fr] + repl + part[to:]
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if result != part:
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print(f'in {filename} replace {part} -> {result}')
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success.append(result != part)
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return result
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newcontent = re.sub(pat, fun, content)
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if not success:
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raise ValueError(f'{pat} not in {filename}')
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write_when_new(filename, newcontent)
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return success[0]
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def create_if(name, cfg):
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if cfg == 'off':
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result = None
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elif cfg.startswith('wan') or cfg == 'dhcp':
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if box.main_if != name:
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print(box.main_if, name)
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raise ValueError('can not have more than one WAN/DHCP port')
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box.main_if = name
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# default: all <= 192.0.0.0
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# others have to be added explicitly
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dhcp_server_cfg.append(('0.0.0.0/128.0.0.0', []))
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dhcp_server_cfg.append(('128.0.0.0/192.0.0.0', []))
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for nw in cfg.split(',')[1:]:
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nw = IPv4Interface(nw).network
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dhcp_server_cfg.append((nw.with_netmask, []))
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result = f"allow-hotplug {name}\niface {name} inet dhcp"
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else:
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cfgip = IPv4Interface(cfg)
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network = cfgip.network
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if network.prefixlen == 32: # or no prefix specified
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otherip = IPv4Interface('%s/24' % cfgip.ip)
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network = otherip.network
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if str(cfgip.ip).endswith('.1'):
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cfgip = network.network_address + 2
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else:
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cfgip = network.network_address + 1
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dhcp_server_cfg.append((network.with_netmask, [(str(otherip.ip), str(otherip.ip))]))
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addr = str(cfgip)
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else: # subnet with multiple adresses -> static adresses only. dhcp range not yet implemented
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addr = str(cfgip.ip)
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# result['NETMASK'] = network.netmask
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result = f"allow-hotplug {name}\niface {name} inet static\n address {addr}/{network.prefixlen}"
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if result:
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return result + '\n'
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def walk(action):
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for rootpath in TO_SYSTEM:
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os.chdir(rootpath)
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for dirpath, _, files in os.walk('.'):
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syspath = dirpath[1:] # remove leading '.'
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action.dirpath = dirpath
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action.syspath = syspath
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if files:
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match, mismatch, missing = filecmp.cmpfiles(dirpath, syspath, files)
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if mismatch:
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newer = [f for f in mismatch if getmtime(join(syspath, f)) > getmtime(join(dirpath, f))]
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if newer:
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action.newer(newer)
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if len(newer) < len(mismatch):
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newer = set(newer)
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action.older([f for f in mismatch if f not in newer])
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if missing:
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if DEL in missing:
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missing.remove(DEL)
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with open(join(dirpath, DEL)) as fil:
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to_delete = []
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for fname in fil:
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fname = fname.strip()
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if fname and exists(join(syspath, fname)):
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if exists(join(dirpath, fname)):
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print('ERROR: %s in %s, but also in repo -> ignored' % (fname, DEL))
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else:
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to_delete.append(fname)
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action.delete(to_delete)
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if missing:
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action.missing(missing)
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class Walker:
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def __init__(self):
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self.dirpath = None
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self.syspath = None
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class Show(Walker):
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dirty = False
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def diff(self, title, files):
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self.dirty = True
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if more_info:
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for f in files:
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if f.endswith(more_info):
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print('diff %s %s' % (join(self.dirpath, f), join(self.syspath, f)))
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print('.' * 80)
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else:
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print('%s %s:\n %s' % (title, self.syspath, ' '.join(files)))
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def show(self, title, dirpath, files):
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self.dirty = True
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if more_info:
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for f in files:
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print('cat %s' % join(dirpath, f))
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print('.' * 80)
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else:
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print('%s %s:\n %s' % (title, self.syspath, ' '.join(files)))
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def newer(self, files):
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self.show('get from', self.dirpath, files)
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def older(self, files):
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self.show('replace in', self.dirpath, files)
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def missing(self, files):
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self.show('install in', self.dirpath, files)
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def delete(self, files):
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self.show('remove from', self.syspath, files)
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class Do(Walker):
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def newer(self, files):
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for file in files:
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shutil.copy(join(self.syspath, file), join(self.dirpath, file))
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def older(self, files):
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for file in files:
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shutil.copy(join(self.dirpath, file), join(self.syspath, file))
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def missing(self, files):
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self.older(files)
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def delete(self, files):
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for file in files:
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os.remove(join(self.syspath, file))
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def handle_config():
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dhcp_server_cfg.clear()
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config = box.read_config()
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cfgfile = box.cfgfile
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newhostname = box.hostname
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if not cfgfile:
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template = CONFIG_TEMPLATE
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if box.typ == 'apu':
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# determine if display is present
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disp = serial.Serial('/dev/ttyS1', baudrate=115200, timeout=1)
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disp.write(b'\x1b\x1b\x01\xf3')
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display_available = disp.read(8)[0:4] == b'\x1b\x1b\x05\xf3'
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if display_available:
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typ = 'controlbox'
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template = CONTROLBOX_TEMPLATE
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else:
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typ = 'bare apu'
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else:
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typ = 'rpi'
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print('no cfg file found for this', typ,
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f'with id {box.id:06x} (hostname={box.hostname})')
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newhostname = input('enter host name: ')
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if not newhostname:
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print('no hostname given')
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return False
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cfgfile = BoxInfo.CFGPATH % (newhostname, box.id)
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with open(cfgfile, 'w') as f:
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f.write(template)
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if box.hostname_changed or cfgfile != BoxInfo.CFGPATH % (newhostname, box.id):
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box.hostname_changed = True
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if cfgfile:
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newhostname = basename(cfgfile).rpartition('_')[0]
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if doit:
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print('bash sethostname.sh')
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os.system(f'bash {TOOLS}/sethostname.sh')
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else:
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if cfgfile:
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print('replace host name %r by %r' % (box.hostname, newhostname))
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show.dirty = True
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config = box.read_config()
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box.hostname = newhostname
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if cfgfile is None:
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return False
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to_start = {}
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ifname = ''
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try:
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netcfg = config['NETWORK']
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for name in netcfg:
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if name not in box.macaddr:
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print(f'{name} is not a valid network interface name')
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raise RuntimeError('network interface name system does not match')
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for ifname in box.macaddr:
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content = create_if(ifname, netcfg.get(ifname, 'off'))
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# content = '\n'.join('%s=%s' % kv for kv in content.items())
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todo = write_when_new(f'/etc/network/interfaces.d/{ifname}', content)
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if todo and not more_info:
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print('change', ifname)
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show.dirty = True
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to_start[ifname] = 'if_restart'
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if dhcp_server_cfg:
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content = [DHCP_HEADER]
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for subnet, rangelist in dhcp_server_cfg:
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try:
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adr, mask = subnet.split('/')
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except Exception as e:
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print(subnet, repr(e))
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continue
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content.append('subnet %s netmask %s {\n' % (adr, mask))
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#content.append(' option netmask %s;\n' % mask)
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for rng in rangelist:
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content.append(' range %s %s;\n' % rng)
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content.append('}\n')
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content = ''.join(content)
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todo = write_when_new('/etc/dhcp/dhcpd.conf', content)
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if todo:
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print('change dhcpd.conf')
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to_start['isc-dhcp-server'] = 'restart'
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show.dirty = True
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try:
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replace_in_file('/etc/default/isc-dhcp-server',
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r'INTERFACESv4="(.*)"', ' '.join([n for n in box.macaddr if n != box.main_if]))
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except FileNotFoundError:
|
|
if 'yes'.startswith(input('install isc-dhcp-server? [y]')):
|
|
os.system('apt-get install isc-dhcp-server')
|
|
exit()
|
|
elif doit:
|
|
check_service('isc-dhcp-server', False)
|
|
content = []
|
|
dirty = False
|
|
for section, section_dict in config.items():
|
|
# if COMMENT not in section_dict:
|
|
# dirty = True
|
|
# content.append('[%s]' % section)
|
|
# content.append(COMMENT)
|
|
if section == 'DISPLAY':
|
|
if display_update(section_dict):
|
|
to_start['display'] = 'restart'
|
|
# for key, value in section_dict.items():
|
|
# content.append('%s=%s' % (key, value))
|
|
# content.append('')
|
|
if dirty:
|
|
print(cfgfile)
|
|
print('\n'.join(content))
|
|
#with open(cfgfile, 'w') as f:
|
|
# f.write('\n'.join(content))
|
|
except Exception as e:
|
|
print('ERROR: can not handle %s %s: %r' % (box.hostname, ifname, e))
|
|
raise
|
|
return False
|
|
|
|
reload_systemd = False
|
|
for service, service_func in SERVICES.items():
|
|
section = service.upper()
|
|
section_dict = config.get(section, {})
|
|
servicecfg = service_func(**section_dict)
|
|
active, enabled = check_service(service)
|
|
if servicecfg is None:
|
|
if active or enabled:
|
|
check_service(service, False, doit)
|
|
show.dirty = True
|
|
else:
|
|
if not enabled:
|
|
to_start[service] = 'enable'
|
|
elif not active:
|
|
to_start[service] = 'restart'
|
|
if write_when_new(f'/etc/systemd/system/{service}.service', servicecfg):
|
|
show.dirty = True
|
|
reload_systemd = True
|
|
if servicecfg and to_start.get('service') is None:
|
|
to_start[service] = 'restart'
|
|
|
|
pip()
|
|
if reload_systemd:
|
|
do_cmd('systemctl daemon-reload')
|
|
for service, action in to_start.items():
|
|
show.dirty = True
|
|
if action == 'if_restart':
|
|
do_cmd(f'ifdown {service}')
|
|
for service, action in to_start.items():
|
|
if action == 'if_restart':
|
|
do_cmd(f'ifup {service}')
|
|
else:
|
|
if action == 'restart':
|
|
do_cmd(f'systemctl restart {service}')
|
|
do_cmd(f'systemctl enable {service}')
|
|
|
|
if box.change_if_names:
|
|
print('interface name system has to be changed from enp*s0 to eth*')
|
|
if replace_in_file('/etc/default/grub',
|
|
r'GRUB_CMDLINE_LINUX_DEFAULT="quiet(.*)"',
|
|
' net.ifnames=0"'):
|
|
do_cmd('update-grub')
|
|
|
|
result = [f'config file:\n {cfgfile}']
|
|
for section, section_dict in config.items():
|
|
result.append(section)
|
|
for key, value in section_dict.items():
|
|
result.append(f' {key} = {value}')
|
|
result.append('')
|
|
return '\n'.join(result)
|
|
|
|
|
|
more_info = False
|
|
doit = False
|
|
print(' ')
|
|
show = Show()
|
|
walk(show)
|
|
result = handle_config()
|
|
|
|
if not result:
|
|
print('fix first above errors')
|
|
else:
|
|
if show.dirty:
|
|
print('---')
|
|
answer = input('enter "y(es)" to do above or "m(ore)" for more info: ')
|
|
if not answer:
|
|
print('cancel')
|
|
elif 'yes'.startswith(answer.lower()):
|
|
doit = True
|
|
handle_config()
|
|
walk(Do())
|
|
with open(f'{TOOLS}/current', 'w') as f:
|
|
f.write(result)
|
|
elif 'more'.startswith(answer.lower()):
|
|
more_info = True
|
|
walk(show)
|
|
result = handle_config()
|
|
else:
|
|
print('nothing to do')
|