lua/lexers/networkd.lua

   1 -- Copyright 2016 Christian Hesse
   2 -- systemd networkd file LPeg lexer.
   3
   4 local l = require('lexer')
   5 local token, word_match = l.token, l.word_match
   6 local P, R, S = lpeg.P, lpeg.R, lpeg.S
   7
   8 local M = {_NAME = 'networkd'}
   9
  10 -- Whitespace.
  11 local ws = token(l.WHITESPACE, l.space^1)
  12
  13 -- Comments.
  14 local comment = token(l.COMMENT, l.starts_line(S(';#')) * l.nonnewline^0)
  15
  16 -- Strings.
  17 local sq_str = l.delimited_range("'")
  18 local dq_str = l.delimited_range('"')
  19 local section_word = word_match{
  20   'Address',
  21   'Link',
  22   'Match',
  23   'Network',
  24   'Route',
  25   'DHCP',
  26   'DHCPServer',
  27   'Bridge',
  28   'BridgeFDB',
  29   'NetDev',
  30   'VLAN',
  31   'MACVLAN',
  32   'MACVTAP',
  33   'IPVLAN',
  34   'VXLAN',
  35   'Tunnel',
  36   'Peer',
  37   'Tun',
  38   'Tap',
  39   'Bond'
  40 }
  41 local string = token(l.STRING, sq_str + dq_str + '[' * section_word * ']')
  42
  43 -- Numbers.
  44 local dec = l.digit^1 * ('_' * l.digit^1)^0
  45 local oct_num = '0' * S('01234567_')^1
  46 local integer = S('+-')^-1 * (l.hex_num + oct_num + dec)
  47 local number = token(l.NUMBER, (l.float + integer))
  48
  49 -- Keywords.
  50 local keyword = token(l.KEYWORD, word_match{
  51   -- boolean values
  52   'true',
  53   'false',
  54   'on',
  55   'off',
  56   'yes',
  57   'no',
  58 })
  59
  60 -- Options.
  61 local option_word = word_match{
  62   -- match section options
  63   'MACAddress',
  64   'OriginalName',
  65   'Path',
  66   'Driver',
  67   'Type',
  68   'Host',
  69   'Name',
  70   'Virtualization',
  71   'KernelCommandLine',
  72   'Architecture',
  73
  74   -- link section options
  75   'Description',
  76   'Alias',
  77   'MACAddressPolicy',
  78   'MACAddress',
  79   'NamePolicy',
  80   'Name',
  81   'MTUBytes',
  82   'BitsPerSecond',
  83   'Duplex',
  84   'WakeOnLan',
  85
  86   -- network section options
  87   'Description',
  88   'DHCP',
  89   'DHCPServer',
  90   'LinkLocalAddressing',
  91   'IPv4LLRoute',
  92   'IPv6Token',
  93   'LLMNR',
  94   'MulticastDNS',
  95   'DNSSEC',
  96   'DNSSECNegativeTrustAnchors',
  97   'LLDP',
  98   'BindCarrier',
  99   'Address',
 100   'Gateway',
 101   'DNS',
 102   'Domains',
 103   'NTP',
 104   'IPForward',
 105   'IPMasquerade',
 106   'IPv6PrivacyExtensions',
 107   'IPv6AcceptRouterAdvertisements',
 108   'IPv6DuplicateAddressDetection',
 109   'IPv6HopLimit',
 110   'Bridge',
 111   'Bond',
 112   'VLAN',
 113   'MACVLAN',
 114   'VXLAN',
 115   'Tunnel',
 116
 117   -- address section options
 118   'Address',
 119   'Peer',
 120   'Broadcast',
 121   'Label',
 122
 123   -- route section options
 124   'Gateway',
 125   'Destination',
 126   'Source',
 127   'Metric',
 128   'Scope',
 129   'PreferredSource',
 130
 131   -- dhcp section options
 132   'UseDNS',
 133   'UseNTP',
 134   'UseMTU',
 135   'SendHostname',
 136   'UseHostname',
 137   'Hostname',
 138   'UseDomains',
 139   'UseRoutes',
 140   'UseTimezone',
 141   'CriticalConnection',
 142   'ClientIdentifier',
 143   'VendorClassIdentifier',
 144   'RequestBroadcast',
 145   'RouteMetric',
 146
 147   -- dhcpserver section options
 148   'PoolOffset',
 149   'PoolSize',
 150   'DefaultLeaseTimeSec',
 151   'MaxLeaseTimeSec',
 152   'EmitDNS',
 153   'DNS',
 154   'EmitNTP',
 155   'NTP',
 156   'EmitTimezone',
 157   'Timezone',
 158
 159   -- bridge section options
 160   'UnicastFlood',
 161   'HairPin',
 162   'UseBPDU',
 163   'FastLeave',
 164   'AllowPortToBeRoot',
 165   'Cost',
 166
 167   -- bridgefdb section options
 168   'MACAddress',
 169   'VLANId',
 170
 171   -- netdev section options
 172   'Description',
 173   'Name',
 174   'Kind',
 175   'MTUBytes',
 176   'MACAddress',
 177
 178   -- bridge (netdev) section options
 179   'HelloTimeSec',
 180   'MaxAgeSec',
 181   'ForwardDelaySec',
 182
 183   -- vlan section options
 184   'Id',
 185
 186   -- macvlan, macvtap and ipvlan section options
 187   'Mode',
 188
 189   -- vxlan section options
 190   'Id',
 191   'Group',
 192   'TOS',
 193   'TTL',
 194   'MacLearning',
 195   'FDBAgeingSec',
 196   'MaximumFDBEntries',
 197   'ARPProxy',
 198   'L2MissNotification',
 199   'L3MissNotification',
 200   'RouteShortCircuit',
 201   'UDPCheckSum',
 202   'UDP6ZeroChecksumTx',
 203   'UDP6ZeroCheckSumRx',
 204   'GroupPolicyExtension',
 205   'DestinationPort',
 206   'PortRange',
 207
 208   -- tunnel section options
 209   'Local',
 210   'Remote',
 211   'TOS',
 212   'TTL',
 213   'DiscoverPathMTU',
 214   'IPv6FlowLabel',
 215   'CopyDSCP',
 216   'EncapsulationLimit',
 217   'Mode',
 218
 219   -- peer section options
 220   'Name',
 221   'MACAddress',
 222
 223   -- tun and tap section options
 224   'OneQueue',
 225   'MultiQueue',
 226   'PacketInfo',
 227   'VNetHeader',
 228   'User',
 229   'Group',
 230
 231   -- bond section options
 232   'Mode',
 233   'TransmitHashPolicy',
 234   'LACPTransmitRate',
 235   'MIIMonitorSec',
 236   'UpDelaySec',
 237   'DownDelaySec',
 238   'LearnPacketIntervalSec',
 239   'AdSelect',
 240   'FailOverMACPolicy',
 241   'ARPValidate',
 242   'ARPIntervalSec',
 243   'ARPIPTargets',
 244   'ARPAllTargets',
 245   'PrimaryReselectPolicy',
 246   'ResendIGMP',
 247   'PacketsPerSlave',
 248   'GratuitousARP',
 249   'AllSlavesActive',
 250   'MinLinks',
 251 }
 252 local preproc = token(l.PREPROCESSOR, option_word)
 253
 254 -- Identifiers.
 255 local word = (l.alpha + '_') * (l.alnum + S('_.'))^0
 256 local identifier = token(l.IDENTIFIER, word)
 257
 258 -- Operators.
 259 local operator = token(l.OPERATOR, '=')
 260
 261 M._rules = {
 262   {'whitespace', ws},
 263   {'keyword', keyword},
 264   {'string', string},
 265   {'preproc', preproc},
 266   {'identifier', identifier},
 267   {'comment', comment},
 268   {'number', number},
 269   {'operator', operator},
 270 }
 271
 272 M._LEXBYLINE = true
 273
 274 return M