272 lines
8.1 KiB
Python
Executable File
272 lines
8.1 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 aputools/servercfg file
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"""
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import os
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import filecmp
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import shutil
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from glob import glob
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from ipaddress import IPv4Interface
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from configparser import ConfigParser
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from os.path import join, getmtime, exists, basename
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os.chdir('/root/aputools/to_system')
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DEL = '__to_delete__'
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CFGPATH = '/root/aputools/servercfg/%s_%6.6x.cfg'
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TEMPLATE_CFG = """[NETWORK]
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enp1s0=192.168.127.1/24
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enp2s0=192.168.2.1/24
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enp3s0=192.168.3.1/24
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enp4s0=dhcp
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[ROUTER]
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3001=192.168.127.254:3001
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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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DHCP_ITEM = """
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subnet %s netmask %s {
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option routers %s;
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option subnet-mask %s;
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range %s %s;
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}
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"""
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def write_when_new(filename, content, doit):
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if not content.endswith('\n'):
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content += '\n'
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with open(filename) as fil:
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old = fil.read()
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if old == content:
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return False
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if doit:
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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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print('===')
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print(old)
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print('---')
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print(content)
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print('===')
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return True
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def create_if(name, cfg, mac):
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result = dict(
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TYPE='Ethernet',
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NAME=name,
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DEVICE=name,
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BOOTPROTO='none',
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ONBOOT='yes',
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PROXY_METHOD='none',
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BROWSER_ONLY='no',
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IPV4_FAILURE_FATAL='yes',
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IPV6INIT='no')
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if cfg == 'off':
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result['ONBOOT']='no'
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elif cfg == 'dhcp':
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result['BOOTPROTO']='dhcp'
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else:
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error = None
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cfgdict = {'own': cfg, 'prefix': '', 'other': ''}
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if ':' in cfg:
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for cfgitem in cfg.split(','):
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k, _, v = cfgitem.partition(':')
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k = k.strip()
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if k not in cfgdict:
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error = 'bad formed'
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cfgdict[k] = v.strip()
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ownip, _, prefix = cfgdict['own'].partition('/')
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prefix = cfgdict['prefix'] or prefix
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if prefix:
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try:
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prefix = int(prefix)
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if not 16 <= prefix < 32:
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error = 'illegal prefix in'
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except ValueError:
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error = 'illegal prefix in'
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if error:
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print('Allowed forms:\n')
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print('%s=n.n.n.n/24' % name)
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print('%s=prefix:24,own:n.n.n.n,other:m.m.m.m\n' % name)
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raise ValueError('%s network config: %s=%s' % (error, name, cfg))
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if not prefix:
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interface = IPv4Interface(ownip)
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if interface < IPv4Interface('128.0.0.0'):
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prefix = 8
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elif interface < IPv4Interface('192.0.0.0'):
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prefix = 16
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else:
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prefix = 24
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interface = IPv4Interface('%s/%d' % (ownip, prefix))
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result['IPADDR'], result['NETMASK'] = interface.with_netmask.split('/')
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_, result['PREFIX'] = interface.with_prefixlen.split('/')
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other = cfgdict['other']
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if other:
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adrs = cfgdict['other'].split('-')
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result['dhcprange'] = (adrs[0], adrs[-1])
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return result
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def walk(action):
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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 f in fil:
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f = f.strip()
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if f and exists(join(syspath, f)):
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if exists(join(dirpath, f)):
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print('ERROR: %s in %s, but also in repo -> ignored' % (f, DEL))
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else:
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to_delete.append(f)
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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 Show:
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dirty = False
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def show(self, title, files):
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self.dirty = True
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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', files)
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def older(self, files):
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self.show('replace in', files)
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def missing(self, files):
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self.show('install in', files)
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def delete(self, files):
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self.show('remove from', files)
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class Do:
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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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IFNAMES = ['enp%ds0' % i for i in range(1,5)]
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def network(doit):
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netaddr_dict = {}
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for ifname in IFNAMES:
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with open('/sys/class/net/%s/address' % ifname) as f:
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netaddr_dict[ifname] = f.read().strip().lower()
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netaddr = netaddr_dict[IFNAMES[0]]
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apuid = int(''.join(netaddr.split(':')[-3:]), 16) & 0xfffffc
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cfgfile = None
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cfgfiles = []
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for i in range(4):
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# goodie: look for mac addresses of all 4 ports
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cfgfiles += glob(CFGPATH % ('*', apuid + i))
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with open('/etc/hostname') as f:
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hostname = f.read().strip()
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if not cfgfiles:
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print('no cfg file found for %s' % hostname)
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newname = input('enter host name: ')
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if not newname:
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print('no hostname given')
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return False
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cfgfile = CFGPATH % (newname, apuid)
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with open(cfgfile, 'w') as f:
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f.write(TEMPLATE_CFG)
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elif len(cfgfiles) > 1:
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print('ERROR: ambiguous cfg files: %s' % ', '.join(cfgfiles))
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else:
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cfgfile = cfgfiles[0]
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if cfgfile != CFGPATH % (hostname, apuid):
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if doit:
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os.system('sh ../sethostname.sh')
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else:
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if cfgfile:
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print('replace host name %r by %r' % (hostname, basename(cfgfile).rpartition('_')[0]))
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show.dirty = True
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if cfgfile is None:
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return False
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ifname = ''
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parser = ConfigParser()
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dh = []
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try:
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parser.read(cfgfile)
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network = dict(parser['NETWORK'])
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for ifname in IFNAMES:
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content = create_if(ifname, network.get(ifname, 'off'), netaddr_dict[ifname])
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dhcprange = content.pop('dhcprange', None)
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if dhcprange:
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ip_mask = content['IPADDR'], content['NETMASK']
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dh.append(ip_mask + ip_mask + dhcprange)
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content = '\n'.join('%s=%s' % kv for kv in content.items())
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todo = write_when_new('/etc/sysconfig/network-scripts/ifcfg-%s' % ifname, content, doit)
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if todo:
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print('change ', ifname)
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show.dirty = True
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if dh:
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content = DHCP_HEADER + '\n'.join([DHCP_ITEM % d for d in dh])
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todo = write_when_new('/etc/dhcp/dhcpd.conf', content, doit)
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if todo:
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print('change ', ifname)
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show.dirty = True
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except Exception as e:
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print('ERROR: can not handle %s %s: %r' % (hostname, ifname, e))
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raise
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return False
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return True
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print('---')
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show = Show()
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result = network(False)
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walk(show)
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if not result:
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print('fix first above errors')
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elif show.dirty:
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print('---')
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answer = input('do above? ')
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if answer.lower().startswith('y'):
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network(True)
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walk(Do())
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else:
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print('nothing to do')
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