ipv6/radvd/files/radvd.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2008-2011 OpenWrt.org
   3 # Copyright (C) 2008  Alina Friedrichsen <x-alina@gmx.net>
   4
   5 START=50
   6
   7 SERVICE_USE_PID=1
   8
   9 RADVD_INTERFACE_STRING_OPTIONS='MaxRtrAdvInterval MinRtrAdvInterval MinDelayBetweenRAs AdvLinkMTU AdvReachableTime AdvRetransTimer AdvCurHopLimit AdvDefaultLifetime AdvDefaultPreference HomeAgentLifetime HomeAgentPreference'
  10 RADVD_INTERFACE_BOOLEAN_OPTIONS='IgnoreIfMissing AdvSendAdvert UnicastOnly AdvManagedFlag AdvOtherConfigFlag AdvSourceLLAddress AdvHomeAgentFlag AdvHomeAgentInfo AdvMobRtrSupportFlag AdvIntervalOpt'
  11
  12 RADVD_PREFIX_STRING_OPTIONS='AdvValidLifetime AdvPreferredLifetime'
  13 RADVD_PREFIX_BOOLEAN_OPTIONS='AdvOnLink AdvAutonomous AdvRouterAddr DeprecatePrefix DecrementLifetimes'
  14
  15 RADVD_ROUTE_STRING_OPTIONS='AdvRouteLifetime AdvRoutePreference'
  16 RADVD_ROUTE_BOOLEAN_OPTIONS='RemoveRoute'
  17
  18 RADVD_RDNSS_STRING_OPTIONS='AdvRDNSSLifetime FlushRDNSS'
  19
  20 RADVD_DNSSL_STRING_OPTIONS='AdvDNSSLLifetime FlushDNSSL'
  21
  22 validate_varname() {
  23         local varname=$1
  24         [ -z "$varname" -o "$varname" != "${varname%%[!A-Za-z0-9_]*}" ] && return 1
  25         return 0
  26 }
  27
  28 validate_ip6addr() {
  29         local ip6addr=$1
  30         [ -z "$ip6addr" -o "$ip6addr" != "${ip6addr%%[!A-Fa-f0-9.:]*}" ] && return 1
  31         return 0
  32 }
  33
  34 validate_ip6prefix() {
  35         local ip6prefix=$1
  36         [ -z "$ip6prefix" -o "$ip6prefix" != "${ip6prefix%%[!A-Fa-f0-9./:]*}" ] && return 1
  37         return 0
  38 }
  39
  40 validate_radvd_string() {
  41         local radvd_string=$1
  42         [ -z "$radvd_string" -o "$radvd_string" != "${radvd_string%%[!a-z0-9.:_-]*}" ] && return 1
  43         return 0
  44 }
  45
  46 get_ip6addr() {
  47         local ifname=$1
  48         local scope=$2
  49         local iproute2_scope
  50         local ifconfig_scope
  51         local ip6addr
  52
  53         case "$scope" in
  54                 host) iproute2_scope=host ifconfig_scope=Host;;
  55                 link) iproute2_scope=link ifconfig_scope=Link;;
  56                 site) iproute2_scope=site ifconfig_scope=Site;;
  57                 global) iproute2_scope=global ifconfig_scope=Global;;
  58                 "") get_ip6addr "$ifname" global || get_ip6addr "$ifname" site; return;;
  59                 *) return 1;;
  60         esac
  61
  62         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"' $/\1/p' | head -n 1)
  63         if [ -z "$ip6addr" ]; then
  64                 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)
  65                 [ -z "$ip6addr" ] && return 1
  66         fi
  67
  68         printf '%s\n' "$ip6addr"
  69
  70         return 0
  71 }
  72
  73 radvd_find_config_file() {
  74         local cfg=$1
  75         validate_varname "$cfg" || return 0
  76
  77         config_get_bool ignore "$cfg" ignore 0
  78         [ "$ignore" -ne 0 ] && return 0
  79         config_get RADVD_CONFIG_FILE "$cfg" config_file
  80
  81         return 0
  82 }
  83
  84 radvd_add_interface() {
  85         local cfg=$1
  86         validate_varname "$cfg" || return 0
  87         local ignore
  88         local interfaces
  89         local interface
  90         local list_interface
  91         local exist
  92
  93         config_get_bool ignore "$cfg" ignore 0
  94         [ "$ignore" -ne 0 ] && return 0
  95
  96         config_get interfaces "$cfg" interface
  97         for interface in $interfaces; do
  98                 validate_varname "$interface" || continue
  99                 exist=0
 100                 for list_interface in $RADVD_INTERFACES; do
 101                         [ "$interface" = "$list_interface" ] && exist=1
 102                 done
 103                 [ "$exist" -eq 0 ] && RADVD_INTERFACES="$RADVD_INTERFACES $interface"
 104         done
 105
 106         return 0
 107 }
 108
 109 radvd_write_interface() {
 110         local cfg=$1
 111         validate_varname "$cfg" || return 0
 112         local ignore
 113         local interfaces
 114         local interface
 115         local name
 116         local value
 117
 118         config_get_bool ignore "$cfg" ignore 0
 119         [ "$ignore" -ne 0 ] && return 0
 120
 121         config_get interfaces "$cfg" interface
 122         exist=0
 123         for interface in $interfaces; do
 124                 [ "$INTERFACE" = "$interface" ] && exist=1
 125         done
 126         [ "$exist" -eq 0 ] && return 0
 127
 128         for name in $RADVD_INTERFACE_STRING_OPTIONS; do
 129                 config_get value "$cfg" "$name"
 130                 validate_radvd_string "$value" || continue
 131                 printf '\t%s %s;\n' "$name" "$value"
 132         done
 133
 134         for name in $RADVD_INTERFACE_BOOLEAN_OPTIONS; do
 135                 config_get value "$cfg" "$name"
 136                 [ -z "$value" ] && continue
 137                 config_get_bool value "$cfg" "$name" 0
 138                 if [ "$value" -ne 0 ]; then
 139                         printf '\t%s on;\n' "$name"
 140                 else
 141                         printf '\t%s off;\n' "$name"
 142                 fi
 143         done
 144
 145         config_get clients "$cfg" client
 146         if [ -n "$clients" ]; then
 147                 printf '\n\tclients\n\t{\n'
 148
 149                 for client in $clients; do
 150                         validate_ip6addr "$client" || continue
 151                         printf '\t\t%s;\n' "$client"
 152                 done
 153
 154                 printf '\t};\n'
 155         fi
 156
 157         return 0
 158 }
 159
 160 radvd_write_prefix() {
 161         local cfg=$1
 162         validate_varname "$cfg" || return 0
 163         local ignore
 164         local interfaces
 165         local interface
 166         local device
 167         local prefixes
 168         local prefix
 169         local name
 170         local value
 171         local cfgt
 172
 173         config_get_bool ignore "$cfg" ignore 0
 174         [ "$ignore" -ne 0 ] && return 0
 175
 176         config_get interfaces "$cfg" interface
 177         exist=0
 178         for interface in $interfaces; do
 179                 [ "$INTERFACE" = "$interface" ] && exist=1
 180         done
 181         [ "$exist" -eq 0 ] && return 0
 182
 183         config_get prefixes "$cfg" prefix
 184         if [ -z "$prefixes" ]; then
 185                 prefixes=$(get_ip6addr "$IFNAME") || return 0
 186         fi
 187
 188         for prefix in $prefixes; do
 189                 validate_ip6prefix "$prefix" || continue
 190                 printf '\n\tprefix %s\n\t{\n' "$prefix"
 191
 192                 for name in $RADVD_PREFIX_STRING_OPTIONS; do
 193                         config_get value "$cfg" "$name"
 194                         validate_radvd_string "$value" || continue
 195                         printf '\t\t%s %s;\n' "$name" "$value"
 196                 done
 197
 198                 for name in $RADVD_PREFIX_BOOLEAN_OPTIONS; do
 199                         config_get value "$cfg" "$name"
 200                         [ -z "$value" ] && continue
 201                         config_get_bool value "$cfg" "$name" 0
 202                         if [ "$value" -ne 0 ]; then
 203                                 printf '\t\t%s on;\n' "$name"
 204                         else
 205                                 printf '\t\t%s off;\n' "$name"
 206                         fi
 207                 done
 208
 209                 config_get value "$cfg" Base6Interface
 210                 if [ -n "$value" ]; then
 211                         if network_get_device device "$value"; then
 212                                 printf '\t\t%s %s;\n' "Base6Interface" "$device"
 213                         fi
 214                 fi
 215
 216                 config_get value "$cfg" Base6to4Interface
 217                 if [ -n "$value" ]; then
 218                         if network_get_device device "$value"; then
 219                                 printf '\t\t%s %s;\n' "Base6to4Interface" "$device"
 220                         fi
 221                 fi
 222
 223                 printf '\t};\n'
 224         done
 225
 226         return 0
 227 }
 228
 229 radvd_write_route() {
 230         local cfg=$1
 231         validate_varname "$cfg" || return 0
 232         local ignore
 233         local interfaces
 234         local interface
 235         local prefixes
 236         local prefix
 237         local name
 238         local value
 239
 240         config_get_bool ignore "$cfg" ignore 0
 241         [ "$ignore" -ne 0 ] && return 0
 242
 243         config_get interfaces "$cfg" interface
 244         exist=0
 245         for interface in $interfaces; do
 246                 [ "$INTERFACE" = "$interface" ] && exist=1
 247         done
 248         [ "$exist" -eq 0 ] && return 0
 249
 250         config_get prefixes "$cfg" prefix
 251         for prefix in $prefixes; do
 252                 validate_ip6prefix "$prefix" || continue
 253                 printf '\n\troute %s\n\t{\n' "$prefix"
 254
 255                 for name in $RADVD_ROUTE_STRING_OPTIONS; do
 256                         config_get value "$cfg" "$name"
 257                         validate_radvd_string "$value" || continue
 258                         printf '\t\t%s %s;\n' "$name" "$value"
 259                 done
 260
 261                 for name in $RADVD_ROUTE_BOOLEAN_OPTIONS; do
 262                         config_get value "$cfg" "$name"
 263                         [ -z "$value" ] && continue
 264                         config_get_bool value "$cfg" "$name" 0
 265                         if [ "$value" -ne 0 ]; then
 266                                 printf '\t\t%s on;\n' "$name"
 267                         else
 268                                 printf '\t\t%s off;\n' "$name"
 269                         fi
 270                 done
 271
 272                 printf '\t};\n'
 273         done
 274
 275         return 0
 276 }
 277
 278 radvd_write_rdnss() {
 279         local cfg=$1
 280         validate_varname "$cfg" || return 0
 281         local ignore
 282         local interfaces
 283         local interface
 284         local addrs
 285         local addr
 286         local addr_list
 287         local name
 288         local value
 289         local i
 290
 291         config_get_bool ignore "$cfg" ignore 0
 292         [ "$ignore" -ne 0 ] && return 0
 293
 294         config_get interfaces "$cfg" interface
 295         exist=0
 296         for interface in $interfaces; do
 297                 [ "$INTERFACE" = "$interface" ] && exist=1
 298         done
 299         [ "$exist" -eq 0 ] && return 0
 300
 301         config_get addrs "$cfg" addr
 302         i=0
 303         for addr in $addrs; do
 304                 [ "$i" -ge 3 ] && break
 305                 validate_ip6addr "$addr" || continue
 306                 addr_list="$addr_list $addr"
 307                 i=$(($i+1))
 308         done
 309
 310         if [ -z "$addr_list" ]; then
 311                 addr=$(get_ip6addr "$IFNAME" link) || return 0
 312                 addr_list=" ${addr%%[/]*}"
 313         fi
 314
 315         printf '\n\tRDNSS%s\n\t{\n' "$addr_list"
 316
 317         for name in $RADVD_RDNSS_STRING_OPTIONS; do
 318                 config_get value "$cfg" "$name"
 319                 validate_radvd_string "$value" || continue
 320                 printf '\t\t%s %s;\n' "$name" "$value"
 321         done
 322
 323         printf '\t};\n'
 324
 325         return 0
 326 }
 327
 328 radvd_write_dnssl() {
 329         local cfg=$1
 330         validate_varname "$cfg" || return 0
 331         local ignore
 332         local interfaces
 333         local interface
 334         local suffixes
 335         local suffix
 336         local suffix_list
 337         local name
 338         local value
 339
 340         config_get_bool ignore "$cfg" ignore 0
 341         [ "$ignore" -ne 0 ] && return 0
 342
 343         config_get interfaces "$cfg" interface
 344         exist=0
 345         for interface in $interfaces; do
 346                 [ "$INTERFACE" = "$interface" ] && exist=1
 347         done
 348         [ "$exist" -eq 0 ] && return 0
 349
 350         config_get suffixes "$cfg" suffix
 351         for suffix in $suffixes; do
 352                 validate_radvd_string "$suffix" || continue
 353                 suffix_list="$suffix_list $suffix"
 354         done
 355
 356         printf '\n\tDNSSL%s\n\t{\n' "$suffix_list"
 357
 358         for name in $RADVD_DNSSL_STRING_OPTIONS; do
 359                 config_get value "$cfg" "$name"
 360                 validate_radvd_string "$value" || continue
 361                 printf '\t\t%s %s;\n' "$name" "$value"
 362         done
 363
 364         printf '\t};\n'
 365
 366         return 0
 367 }
 368
 369 radvd_write_config() {
 370         . /lib/functions/network.sh
 371
 372         RADVD_INTERFACES=
 373         config_foreach radvd_add_interface interface
 374         config_foreach radvd_add_interface prefix
 375         config_foreach radvd_add_interface route
 376         config_foreach radvd_add_interface RDNSS
 377         config_foreach radvd_add_interface DNSSL
 378
 379         for INTERFACE in $RADVD_INTERFACES; do
 380                 network_get_device IFNAME "$INTERFACE" || continue
 381                 printf 'interface %s\n{\n' "$IFNAME"
 382                 config_foreach radvd_write_interface interface
 383                 config_foreach radvd_write_prefix prefix
 384                 config_foreach radvd_write_route route
 385                 config_foreach radvd_write_rdnss rdnss
 386                 config_foreach radvd_write_dnssl dnssl
 387                 printf '};\n\n'
 388         done
 389
 390         return 0
 391 }
 392
 393 start() {
 394         config_load radvd
 395
 396         RADVD_CONFIG_FILE=
 397         config_foreach radvd_find_config_file radvd
 398
 399         if [ -z "$RADVD_CONFIG_FILE" ]; then
 400                 mkdir -p -- /var/etc/
 401                 radvd_write_config > /var/etc/radvd.conf
 402                 if [ -s "/var/etc/radvd.conf" ]; then
 403                         RADVD_CONFIG_FILE=/var/etc/radvd.conf
 404                 fi
 405         fi
 406
 407         [ -z "$RADVD_CONFIG_FILE" ] && return 1
 408
 409         sysctl -w net.ipv6.conf.all.forwarding=1 > /dev/null 2> /dev/null
 410
 411         service_start /usr/sbin/radvd -C "$RADVD_CONFIG_FILE" -m stderr_syslog -p /var/run/radvd.pid
 412 }
 413
 414 stop() {
 415         service_stop /usr/sbin/radvd
 416 }