| 1 | #!/usr/bin/env python3
|
|---|
| 2 | # vim:ts=2:et:sw=2:ai
|
|---|
| 3 | #
|
|---|
| 4 | # Build topological network graph
|
|---|
| 5 | # Rick van der Zwet <info@rickvanderzwet.nl>
|
|---|
| 6 | import gformat
|
|---|
| 7 | import sys
|
|---|
| 8 | import ipaddress
|
|---|
| 9 |
|
|---|
| 10 | from collections import defaultdict
|
|---|
| 11 |
|
|---|
| 12 | __version__ = '$Id: syntax-checker.py 14374 2019-06-11 10:41:16Z rick $'
|
|---|
| 13 |
|
|---|
| 14 | allowed_multi_use = list(map(lambda x: ipaddress.ip_network(x, strict=True), [
|
|---|
| 15 | '192.168.0.0/22',
|
|---|
| 16 | '192.168.0.0/16',
|
|---|
| 17 | '192.168.0.0/24',
|
|---|
| 18 | '192.168.1.0/24',
|
|---|
| 19 | '192.168.178.0/24',
|
|---|
| 20 | ]))
|
|---|
| 21 |
|
|---|
| 22 |
|
|---|
| 23 | def check_double_ip():
|
|---|
| 24 | pool = defaultdict(list)
|
|---|
| 25 | try:
|
|---|
| 26 | for host in gformat.get_hostlist():
|
|---|
| 27 | print("## Processing host %-25s: " % host, end='')
|
|---|
| 28 | datadump = gformat.get_yaml(host,add_version_info=False)
|
|---|
| 29 | masterip_addr = ipaddress.IPv4Interface(datadump['masterip'])
|
|---|
| 30 | masterip_is_used = False
|
|---|
| 31 |
|
|---|
| 32 | # Check syntax of defined variables
|
|---|
| 33 | _ = gformat.generate_wleiden_yaml(datadump)
|
|---|
| 34 | try:
|
|---|
| 35 | # Process interfaces
|
|---|
| 36 | iface_keys = [elem for elem in datadump.keys() if (elem.startswith('iface_') and not "lo0" in elem)]
|
|---|
| 37 | for iface_key in iface_keys:
|
|---|
| 38 | # Extra (descriptive entries) are ignored
|
|---|
| 39 | if '_extra' in iface_key:
|
|---|
| 40 | continue
|
|---|
| 41 |
|
|---|
| 42 | # Process actual and virtual IP (avoiding clashes with nanostation IP)
|
|---|
| 43 | for entry in ['ip', 'ns_ip']:
|
|---|
| 44 | if entry in datadump[iface_key]:
|
|---|
| 45 | addr = ipaddress.IPv4Interface(datadump[iface_key][entry])
|
|---|
| 46 | if masterip_addr in addr.network:
|
|---|
| 47 | masterip_is_used = True
|
|---|
| 48 | pool[addr.network].append((host, iface_key, entry, addr))
|
|---|
| 49 |
|
|---|
| 50 |
|
|---|
| 51 | # Add masterip to the list if IP has not been defined at interface
|
|---|
| 52 | if not masterip_is_used:
|
|---|
| 53 | pool[masterip_addr.network].append((host, 'masterip', '', masterip_addr))
|
|---|
| 54 |
|
|---|
| 55 | print("OK")
|
|---|
| 56 | except (KeyError, ValueError) as e:
|
|---|
| 57 | print("[ERROR] in '%s' interface '%s' (%s)" % (host, iface_key, e))
|
|---|
| 58 | raise
|
|---|
| 59 | except Exception as e:
|
|---|
| 60 | raise
|
|---|
| 61 | sys.exit(1)
|
|---|
| 62 |
|
|---|
| 63 | errors = 0
|
|---|
| 64 | keys = sorted(pool.keys(),reverse=True)
|
|---|
| 65 |
|
|---|
| 66 | for i,network in enumerate(keys):
|
|---|
| 67 | if not network in allowed_multi_use:
|
|---|
| 68 | for network2 in keys[i+1:]:
|
|---|
| 69 | if not network2 in allowed_multi_use and network2.overlaps(network):
|
|---|
| 70 | errors += 1
|
|---|
| 71 | print("[ERROR#%i] network %s overlaps with %s:" % (errors, network, network2))
|
|---|
| 72 | for (host, key, entry, addr) in sorted(pool[network] + pool[network2]):
|
|---|
| 73 | print(" - %-20s - %-20s - %-5s - %s" % (host, key, entry, addr))
|
|---|
| 74 |
|
|---|
| 75 | leden = sorted(pool[network])
|
|---|
| 76 | for i,lid in enumerate(leden):
|
|---|
| 77 | for lid2 in leden[i+1:]:
|
|---|
| 78 | if lid[3] == lid2[3]:
|
|---|
| 79 | errors += 1
|
|---|
| 80 | print("[ERROR#%i] Multiple usages of IP %s:" % (errors, lid[3]))
|
|---|
| 81 | print(" - %-20s - %-20s - %-5s" % (lid[0], lid[1], lid[2]))
|
|---|
| 82 | print(" - %-20s - %-20s - %-5s" % (lid2[0], lid2[1], lid2[2]))
|
|---|
| 83 |
|
|---|
| 84 | if errors > 0:
|
|---|
| 85 | print("# %i Errors found" % errors)
|
|---|
| 86 | return 1
|
|---|
| 87 | else:
|
|---|
| 88 | print("# No multiple usages of IPs found")
|
|---|
| 89 | return 0
|
|---|
| 90 |
|
|---|
| 91 |
|
|---|
| 92 | if __name__ == "__main__":
|
|---|
| 93 | sys.exit(check_double_ip())
|
|---|
| 94 |
|
|---|
