ipv6/radvd/files/radvd.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2008  Alina Friedrichsen <x-alina@gmx.net>
   3 START=50
   4
   5 RADVD_INTERFACE_STRING_OPTIONS='MaxRtrAdvInterval MinRtrAdvInterval MinDelayBetweenRAs AdvLinkMTU AdvReachableTime AdvRetransTimer AdvCurHopLimit AdvDefaultLifetime AdvDefaultPreference HomeAgentLifetime HomeAgentPreference'
   6 RADVD_INTERFACE_BOOLEAN_OPTIONS='IgnoreIfMissing AdvSendAdvert UnicastOnly AdvManagedFlag AdvOtherConfigFlag AdvSourceLLAddress AdvHomeAgentFlag AdvHomeAgentInfo AdvMobRtrSupportFlag AdvIntervalOpt'
   7
   8 RADVD_PREFIX_STRING_OPTIONS='AdvValidLifetime AdvPreferredLifetime'
   9 RADVD_PREFIX_BOOLEAN_OPTIONS='AdvOnLink AdvAutonomous AdvRouterAddr DeprecatePrefix DecrementLifetimes'
  10
  11 RADVD_ROUTE_STRING_OPTIONS='AdvRouteLifetime AdvRoutePreference'
  12 RADVD_ROUTE_BOOLEAN_OPTIONS='RemoveRoute'
  13
  14 RADVD_RDNSS_STRING_OPTIONS='AdvRDNSSLifetime FlushRDNSS'
  15
  16 RADVD_DNSSL_STRING_OPTIONS='AdvDNSSLLifetime FlushDNSSL'
  17
  18 validate_varname() {
  19         local varname=$1
  20         [ -z "$varname" -o "$varname" != "${varname%%[!A-Za-z0-9_]*}" ] && return 1
  21         return 0
  22 }
  23
  24 validate_ifname() {
  25         local ifname=$1
  26         [ -z "$ifname" -o "$ifname" != "${ifname%%[!A-Za-z0-9.:_-]*}" ] && return 1
  27         return 0
  28 }
  29
  30 validate_ip6addr() {
  31         local ip6addr=$1
  32         [ -z "$ip6addr" -o "$ip6addr" != "${ip6addr%%[!A-Fa-f0-9.:]*}" ] && return 1
  33         return 0
  34 }
  35
  36 validate_ip6prefix() {
  37         local ip6prefix=$1
  38         [ -z "$ip6prefix" -o "$ip6prefix" != "${ip6prefix%%[!A-Fa-f0-9./:]*}" ] && return 1
  39         return 0
  40 }
  41
  42 validate_radvd_string() {
  43         local radvd_string=$1
  44         [ -z "$radvd_string" -o "$radvd_string" != "${radvd_string%%[!a-z0-9.:_-]*}" ] && return 1
  45         return 0
  46 }
  47
  48 get_ifname() {
  49         local interface=$1
  50         validate_varname "$interface" || return 1
  51         local cfgt
  52         local ifname
  53
  54         scan_interfaces
  55         config_get cfgt "$interface" TYPE
  56         [ "$cfgt" != "interface" ] && return 1
  57         config_get ifname "$interface" ifname
  58         validate_ifname "$ifname" || return 1
  59         printf '%s\n' "$ifname"
  60
  61         return 0
  62 }
  63
  64 get_ip6addr() {
  65         local ifname=$1
  66         local scope=$2
  67         local iproute2_scope
  68         local ifconfig_scope
  69         local ip6addr
  70
  71         case "$scope" in
  72                 host) iproute2_scope=host ifconfig_scope=Host;;
  73                 link) iproute2_scope=link ifconfig_scope=Link;;
  74                 site) iproute2_scope=site ifconfig_scope=Site;;
  75                 global) iproute2_scope=global ifconfig_scope=Global;;
  76                 "") get_ip6addr "$ifname" global || get_ip6addr "$ifname" site; return;;
  77                 *) return 1;;
  78         esac
  79
  80         ip6addr=$(LANG=C ip -f inet6 -- addr show dev "$ifname" 2> /dev/null | sed -n -e 's/^  *inet6 \([A-Fa-f0-9.:]*[/][0-9]*\) scope '"$iproute2_scope"' $/\1/p' | head -n 1)
  81         if [ -z "$ip6addr" ]; then
  82                 ip6addr=$(LANG=C ifconfig "$ifname" 2> /dev/null | sed -n -e 's/^  *inet6 addr: \([A-Fa-f0-9.:]*[/][0-9]*\) Scope:'"$ifconfig_scope"'$/\1/p' | tail -n 1)
  83                 [ -z "$ip6addr" ] && return 1
  84         fi
  85
  86         printf '%s\n' "$ip6addr"
  87
  88         return 0
  89 }
  90
  91 radvd_find_config_file() {
  92         local cfg=$1
  93         validate_varname "$cfg" || return 0
  94
  95         config_get_bool ignore "$cfg" ignore 0
  96         [ "$ignore" -ne 0 ] && return 0
  97         config_get RADVD_CONFIG_FILE "$cfg" config_file
  98
  99         return 0
 100 }
 101
 102 radvd_add_interface() {
 103         local cfg=$1
 104         validate_varname "$cfg" || return 0
 105         local ignore
 106         local interfaces
 107         local interface
 108         local list_interface
 109         local exist
 110
 111         config_get_bool ignore "$cfg" ignore 0
 112         [ "$ignore" -ne 0 ] && return 0
 113
 114         config_get interfaces "$cfg" interface
 115         for interface in $interfaces; do
 116                 validate_varname "$interface" || continue
 117                 exist=0
 118                 for list_interface in $RADVD_INTERFACES; do
 119                         [ "$interface" = "$list_interface" ] && exist=1
 120                 done
 121                 [ "$exist" -eq 0 ] && RADVD_INTERFACES="$RADVD_INTERFACES $interface"
 122         done
 123
 124         return 0
 125 }
 126
 127 radvd_write_interface() {
 128         local cfg=$1
 129         validate_varname "$cfg" || return 0
 130         local ignore
 131         local interfaces
 132         local interface
 133         local name
 134         local value
 135
 136         config_get_bool ignore "$cfg" ignore 0
 137         [ "$ignore" -ne 0 ] && return 0
 138
 139         config_get interfaces "$cfg" interface
 140         exist=0
 141         for interface in $interfaces; do
 142                 [ "$INTERFACE" = "$interface" ] && exist=1
 143         done
 144         [ "$exist" -eq 0 ] && return 0
 145
 146         for name in $RADVD_INTERFACE_STRING_OPTIONS; do
 147                 config_get value "$cfg" "$name"
 148                 validate_radvd_string "$value" || continue
 149                 printf '\t%s %s;\n' "$name" "$value"
 150         done
 151
 152         for name in $RADVD_INTERFACE_BOOLEAN_OPTIONS; do
 153                 config_get value "$cfg" "$name"
 154                 [ -z "$value" ] && continue
 155                 config_get_bool value "$cfg" "$name" 0
 156                 if [ "$value" -ne 0 ]; then
 157                         printf '\t%s on;\n' "$name"
 158                 else
 159                         printf '\t%s off;\n' "$name"
 160                 fi
 161         done
 162
 163         config_get clients "$cfg" client
 164         if [ -n "$clients" ]; then
 165                 printf '\n\tclients\n\t{\n'
 166
 167                 for client in $clients; do
 168                         validate_ip6addr "$client" || continue
 169                         printf '\t\t%s;\n' "$client"
 170                 done
 171
 172                 printf '\t};\n'
 173         fi
 174
 175         return 0
 176 }
 177
 178 radvd_write_prefix() {
 179         local cfg=$1
 180         validate_varname "$cfg" || return 0
 181         local ignore
 182         local interfaces
 183         local interface
 184         local prefixes
 185         local prefix
 186         local name
 187         local value
 188         local cfgt
 189
 190         config_get_bool ignore "$cfg" ignore 0
 191         [ "$ignore" -ne 0 ] && return 0
 192
 193         config_get interfaces "$cfg" interface
 194         exist=0
 195         for interface in $interfaces; do
 196                 [ "$INTERFACE" = "$interface" ] && exist=1
 197         done
 198         [ "$exist" -eq 0 ] && return 0
 199
 200         config_get prefixes "$cfg" prefix
 201         if [ -z "$prefixes" ]; then
 202                 prefixes=$(get_ip6addr "$IFNAME") || return 0
 203         fi
 204
 205         for prefix in $prefixes; do
 206                 validate_ip6prefix "$prefix" || continue
 207                 printf '\n\tprefix %s\n\t{\n' "$prefix"
 208
 209                 for name in $RADVD_PREFIX_STRING_OPTIONS; do
 210                         config_get value "$cfg" "$name"
 211                         validate_radvd_string "$value" || continue
 212                         printf '\t\t%s %s;\n' "$name" "$value"
 213                 done
 214
 215                 for name in $RADVD_PREFIX_BOOLEAN_OPTIONS; do
 216                         config_get value "$cfg" "$name"
 217                         [ -z "$value" ] && continue
 218                         config_get_bool value "$cfg" "$name" 0
 219                         if [ "$value" -ne 0 ]; then
 220                                 printf '\t\t%s on;\n' "$name"
 221                         else
 222                                 printf '\t\t%s off;\n' "$name"
 223                         fi
 224                 done
 225
 226                 config_get value "$cfg" Base6Interface
 227                 if [ -n "$value" ]; then
 228                         if ifname=$(get_ifname "$value"); then
 229                                 printf '\t\t%s %s;\n' "Base6Interface" "$ifname"
 230                         fi
 231                 fi
 232
 233                 config_get value "$cfg" Base6to4Interface
 234                 if [ -n "$value" ]; then
 235                         if ifname=$(get_ifname "$value"); then
 236                                 printf '\t\t%s %s;\n' "Base6to4Interface" "$ifname"
 237                         fi
 238                 fi
 239
 240                 printf '\t};\n'
 241         done
 242
 243         return 0
 244 }
 245
 246 radvd_write_route() {
 247         local cfg=$1
 248         validate_varname "$cfg" || return 0
 249         local ignore
 250         local interfaces
 251         local interface
 252         local prefixes
 253         local prefix
 254         local name
 255         local value
 256
 257         config_get_bool ignore "$cfg" ignore 0
 258         [ "$ignore" -ne 0 ] && return 0
 259
 260         config_get interfaces "$cfg" interface
 261         exist=0
 262         for interface in $interfaces; do
 263                 [ "$INTERFACE" = "$interface" ] && exist=1
 264         done
 265         [ "$exist" -eq 0 ] && return 0
 266
 267         config_get prefixes "$cfg" prefix
 268         for prefix in $prefixes; do
 269                 validate_ip6prefix "$prefix" || continue
 270                 printf '\n\troute %s\n\t{\n' "$prefix"
 271
 272                 for name in $RADVD_ROUTE_STRING_OPTIONS; do
 273                         config_get value "$cfg" "$name"
 274                         validate_radvd_string "$value" || continue
 275                         printf '\t\t%s %s;\n' "$name" "$value"
 276                 done
 277
 278                 for name in $RADVD_ROUTE_BOOLEAN_OPTIONS; do
 279                         config_get value "$cfg" "$name"
 280                         [ -z "$value" ] && continue
 281                         config_get_bool value "$cfg" "$name" 0
 282                         if [ "$value" -ne 0 ]; then
 283                                 printf '\t\t%s on;\n' "$name"
 284                         else
 285                                 printf '\t\t%s off;\n' "$name"
 286                         fi
 287                 done
 288
 289                 printf '\t};\n'
 290         done
 291
 292         return 0
 293 }
 294
 295 radvd_write_rdnss() {
 296         local cfg=$1
 297         validate_varname "$cfg" || return 0
 298         local ignore
 299         local interfaces
 300         local interface
 301         local addrs
 302         local addr
 303         local addr_list
 304         local name
 305         local value
 306         local i
 307
 308         config_get_bool ignore "$cfg" ignore 0
 309         [ "$ignore" -ne 0 ] && return 0
 310
 311         config_get interfaces "$cfg" interface
 312         exist=0
 313         for interface in $interfaces; do
 314                 [ "$INTERFACE" = "$interface" ] && exist=1
 315         done
 316         [ "$exist" -eq 0 ] && return 0
 317
 318         config_get addrs "$cfg" addr
 319         i=0
 320         for addr in $addrs; do
 321                 [ "$i" -ge 3 ] && break
 322                 validate_ip6addr "$addr" || continue
 323                 addr_list="$addr_list $addr"
 324                 i=$(($i+1))
 325         done
 326
 327         if [ -z "$addr_list" ]; then
 328                 addr=$(get_ip6addr "$IFNAME" link) || return 0
 329                 addr_list=" ${addr%%[/]*}"
 330         fi
 331
 332         printf '\n\tRDNSS%s\n\t{\n' "$addr_list"
 333
 334         for name in $RADVD_RDNSS_STRING_OPTIONS; do
 335                 config_get value "$cfg" "$name"
 336                 validate_radvd_string "$value" || continue
 337                 printf '\t\t%s %s;\n' "$name" "$value"
 338         done
 339
 340         printf '\t};\n'
 341
 342         return 0
 343 }
 344
 345 radvd_write_dnssl() {
 346         local cfg=$1
 347         validate_varname "$cfg" || return 0
 348         local ignore
 349         local interfaces
 350         local interface
 351         local suffixes
 352         local suffix
 353         local suffix_list
 354         local name
 355         local value
 356
 357         config_get_bool ignore "$cfg" ignore 0
 358         [ "$ignore" -ne 0 ] && return 0
 359
 360         config_get interfaces "$cfg" interface
 361         exist=0
 362         for interface in $interfaces; do
 363                 [ "$INTERFACE" = "$interface" ] && exist=1
 364         done
 365         [ "$exist" -eq 0 ] && return 0
 366
 367         config_get suffixes "$cfg" suffix
 368         for suffix in $suffixes; do
 369                 validate_radvd_string "$suffix" || continue
 370                 suffix_list="$suffix_list $suffix"
 371         done
 372
 373         printf '\n\tDNSSL%s\n\t{\n' "$suffix_list"
 374
 375         for name in $RADVD_DNSSL_STRING_OPTIONS; do
 376                 config_get value "$cfg" "$name"
 377                 validate_radvd_string "$value" || continue
 378                 printf '\t\t%s %s;\n' "$name" "$value"
 379         done
 380
 381         printf '\t};\n'
 382
 383         return 0
 384 }
 385
 386 radvd_write_config() {
 387         include /lib/network
 388
 389         RADVD_INTERFACES=
 390         config_foreach radvd_add_interface interface
 391         config_foreach radvd_add_interface prefix
 392         config_foreach radvd_add_interface route
 393         config_foreach radvd_add_interface RDNSS
 394         config_foreach radvd_add_interface DNSSL
 395
 396         for INTERFACE in $RADVD_INTERFACES; do
 397                 IFNAME=$(get_ifname "$INTERFACE") || continue
 398                 printf 'interface %s\n{\n' "$IFNAME"
 399                 config_foreach radvd_write_interface interface
 400                 config_foreach radvd_write_prefix prefix
 401                 config_foreach radvd_write_route route
 402                 config_foreach radvd_write_rdnss rdnss
 403                 config_foreach radvd_write_dnssl dnssl
 404                 printf '};\n\n'
 405         done
 406
 407         return 0
 408 }
 409
 410 start() {
 411         config_load radvd
 412
 413         RADVD_CONFIG_FILE=
 414         config_foreach radvd_find_config_file radvd
 415
 416         if [ -z "$RADVD_CONFIG_FILE" ]; then
 417                 mkdir -p -- /var/etc/
 418                 radvd_write_config > /var/etc/radvd.conf
 419                 if [ -s "/var/etc/radvd.conf" ]; then
 420                         RADVD_CONFIG_FILE=/var/etc/radvd.conf
 421                 fi
 422         fi
 423
 424         [ -z "$RADVD_CONFIG_FILE" ] && return 1
 425
 426         sysctl -w net.ipv6.conf.all.forwarding=1 > /dev/null 2> /dev/null
 427
 428         radvd -C "$RADVD_CONFIG_FILE" -m stderr_syslog -p /var/run/radvd.pid
 429 }
 430
 431 stop() {
 432         killall radvd
 433 }