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_ifname() {
  29         local ifname=$1
  30         [ -z "$ifname" -o "$ifname" != "${ifname%%[!A-Za-z0-9.:_-]*}" ] && return 1
  31         return 0
  32 }
  33
  34 validate_ip6addr() {
  35         local ip6addr=$1
  36         [ -z "$ip6addr" -o "$ip6addr" != "${ip6addr%%[!A-Fa-f0-9.:]*}" ] && return 1
  37         return 0
  38 }
  39
  40 validate_ip6prefix() {
  41         local ip6prefix=$1
  42         [ -z "$ip6prefix" -o "$ip6prefix" != "${ip6prefix%%[!A-Fa-f0-9./:]*}" ] && return 1
  43         return 0
  44 }
  45
  46 validate_radvd_string() {
  47         local radvd_string=$1
  48         [ -z "$radvd_string" -o "$radvd_string" != "${radvd_string%%[!a-z0-9.:_-]*}" ] && return 1
  49         return 0
  50 }
  51
  52 get_ifname() {
  53         local interface=$1
  54         validate_varname "$interface" || return 1
  55         local cfgt
  56         local ifname
  57
  58         scan_interfaces
  59         config_get cfgt "$interface" TYPE
  60         [ "$cfgt" != "interface" ] && return 1
  61         config_get ifname "$interface" ifname
  62         validate_ifname "$ifname" || return 1
  63         printf '%s\n' "$ifname"
  64
  65         return 0
  66 }
  67
  68 get_ip6addr() {
  69         local ifname=$1
  70         local scope=$2
  71         local iproute2_scope
  72         local ifconfig_scope
  73         local ip6addr
  74
  75         case "$scope" in
  76                 host) iproute2_scope=host ifconfig_scope=Host;;
  77                 link) iproute2_scope=link ifconfig_scope=Link;;
  78                 site) iproute2_scope=site ifconfig_scope=Site;;
  79                 global) iproute2_scope=global ifconfig_scope=Global;;
  80                 "") get_ip6addr "$ifname" global || get_ip6addr "$ifname" site; return;;
  81                 *) return 1;;
  82         esac
  83
  84         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"' $/\1/p' | head -n 1)
  85         if [ -z "$ip6addr" ]; then
  86                 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)
  87                 [ -z "$ip6addr" ] && return 1
  88         fi
  89
  90         printf '%s\n' "$ip6addr"
  91
  92         return 0
  93 }
  94
  95 radvd_find_config_file() {
  96         local cfg=$1
  97         validate_varname "$cfg" || return 0
  98
  99         config_get_bool ignore "$cfg" ignore 0
 100         [ "$ignore" -ne 0 ] && return 0
 101         config_get RADVD_CONFIG_FILE "$cfg" config_file
 102
 103         return 0
 104 }
 105
 106 radvd_add_interface() {
 107         local cfg=$1
 108         validate_varname "$cfg" || return 0
 109         local ignore
 110         local interfaces
 111         local interface
 112         local list_interface
 113         local exist
 114
 115         config_get_bool ignore "$cfg" ignore 0
 116         [ "$ignore" -ne 0 ] && return 0
 117
 118         config_get interfaces "$cfg" interface
 119         for interface in $interfaces; do
 120                 validate_varname "$interface" || continue
 121                 exist=0
 122                 for list_interface in $RADVD_INTERFACES; do
 123                         [ "$interface" = "$list_interface" ] && exist=1
 124                 done
 125                 [ "$exist" -eq 0 ] && RADVD_INTERFACES="$RADVD_INTERFACES $interface"
 126         done
 127
 128         return 0
 129 }
 130
 131 radvd_write_interface() {
 132         local cfg=$1
 133         validate_varname "$cfg" || return 0
 134         local ignore
 135         local interfaces
 136         local interface
 137         local name
 138         local value
 139
 140         config_get_bool ignore "$cfg" ignore 0
 141         [ "$ignore" -ne 0 ] && return 0
 142
 143         config_get interfaces "$cfg" interface
 144         exist=0
 145         for interface in $interfaces; do
 146                 [ "$INTERFACE" = "$interface" ] && exist=1
 147         done
 148         [ "$exist" -eq 0 ] && return 0
 149
 150         for name in $RADVD_INTERFACE_STRING_OPTIONS; do
 151                 config_get value "$cfg" "$name"
 152                 validate_radvd_string "$value" || continue
 153                 printf '\t%s %s;\n' "$name" "$value"
 154         done
 155
 156         for name in $RADVD_INTERFACE_BOOLEAN_OPTIONS; do
 157                 config_get value "$cfg" "$name"
 158                 [ -z "$value" ] && continue
 159                 config_get_bool value "$cfg" "$name" 0
 160                 if [ "$value" -ne 0 ]; then
 161                         printf '\t%s on;\n' "$name"
 162                 else
 163                         printf '\t%s off;\n' "$name"
 164                 fi
 165         done
 166
 167         config_get clients "$cfg" client
 168         if [ -n "$clients" ]; then
 169                 printf '\n\tclients\n\t{\n'
 170
 171                 for client in $clients; do
 172                         validate_ip6addr "$client" || continue
 173                         printf '\t\t%s;\n' "$client"
 174                 done
 175
 176                 printf '\t};\n'
 177         fi
 178
 179         return 0
 180 }
 181
 182 radvd_write_prefix() {
 183         local cfg=$1
 184         validate_varname "$cfg" || return 0
 185         local ignore
 186         local interfaces
 187         local interface
 188         local prefixes
 189         local prefix
 190         local name
 191         local value
 192         local cfgt
 193
 194         config_get_bool ignore "$cfg" ignore 0
 195         [ "$ignore" -ne 0 ] && return 0
 196
 197         config_get interfaces "$cfg" interface
 198         exist=0
 199         for interface in $interfaces; do
 200                 [ "$INTERFACE" = "$interface" ] && exist=1
 201         done
 202         [ "$exist" -eq 0 ] && return 0
 203
 204         config_get prefixes "$cfg" prefix
 205         if [ -z "$prefixes" ]; then
 206                 prefixes=$(get_ip6addr "$IFNAME") || return 0
 207         fi
 208
 209         for prefix in $prefixes; do
 210                 validate_ip6prefix "$prefix" || continue
 211                 printf '\n\tprefix %s\n\t{\n' "$prefix"
 212
 213                 for name in $RADVD_PREFIX_STRING_OPTIONS; do
 214                         config_get value "$cfg" "$name"
 215                         validate_radvd_string "$value" || continue
 216                         printf '\t\t%s %s;\n' "$name" "$value"
 217                 done
 218
 219                 for name in $RADVD_PREFIX_BOOLEAN_OPTIONS; do
 220                         config_get value "$cfg" "$name"
 221                         [ -z "$value" ] && continue
 222                         config_get_bool value "$cfg" "$name" 0
 223                         if [ "$value" -ne 0 ]; then
 224                                 printf '\t\t%s on;\n' "$name"
 225                         else
 226                                 printf '\t\t%s off;\n' "$name"
 227                         fi
 228                 done
 229
 230                 config_get value "$cfg" Base6Interface
 231                 if [ -n "$value" ]; then
 232                         if ifname=$(get_ifname "$value"); then
 233                                 printf '\t\t%s %s;\n' "Base6Interface" "$ifname"
 234                         fi
 235                 fi
 236
 237                 config_get value "$cfg" Base6to4Interface
 238                 if [ -n "$value" ]; then
 239                         if ifname=$(get_ifname "$value"); then
 240                                 printf '\t\t%s %s;\n' "Base6to4Interface" "$ifname"
 241                         fi
 242                 fi
 243
 244                 printf '\t};\n'
 245         done
 246
 247         return 0
 248 }
 249
 250 radvd_write_route() {
 251         local cfg=$1
 252         validate_varname "$cfg" || return 0
 253         local ignore
 254         local interfaces
 255         local interface
 256         local prefixes
 257         local prefix
 258         local name
 259         local value
 260
 261         config_get_bool ignore "$cfg" ignore 0
 262         [ "$ignore" -ne 0 ] && return 0
 263
 264         config_get interfaces "$cfg" interface
 265         exist=0
 266         for interface in $interfaces; do
 267                 [ "$INTERFACE" = "$interface" ] && exist=1
 268         done
 269         [ "$exist" -eq 0 ] && return 0
 270
 271         config_get prefixes "$cfg" prefix
 272         for prefix in $prefixes; do
 273                 validate_ip6prefix "$prefix" || continue
 274                 printf '\n\troute %s\n\t{\n' "$prefix"
 275
 276                 for name in $RADVD_ROUTE_STRING_OPTIONS; do
 277                         config_get value "$cfg" "$name"
 278                         validate_radvd_string "$value" || continue
 279                         printf '\t\t%s %s;\n' "$name" "$value"
 280                 done
 281
 282                 for name in $RADVD_ROUTE_BOOLEAN_OPTIONS; do
 283                         config_get value "$cfg" "$name"
 284                         [ -z "$value" ] && continue
 285                         config_get_bool value "$cfg" "$name" 0
 286                         if [ "$value" -ne 0 ]; then
 287                                 printf '\t\t%s on;\n' "$name"
 288                         else
 289                                 printf '\t\t%s off;\n' "$name"
 290                         fi
 291                 done
 292
 293                 printf '\t};\n'
 294         done
 295
 296         return 0
 297 }
 298
 299 radvd_write_rdnss() {
 300         local cfg=$1
 301         validate_varname "$cfg" || return 0
 302         local ignore
 303         local interfaces
 304         local interface
 305         local addrs
 306         local addr
 307         local addr_list
 308         local name
 309         local value
 310         local i
 311
 312         config_get_bool ignore "$cfg" ignore 0
 313         [ "$ignore" -ne 0 ] && return 0
 314
 315         config_get interfaces "$cfg" interface
 316         exist=0
 317         for interface in $interfaces; do
 318                 [ "$INTERFACE" = "$interface" ] && exist=1
 319         done
 320         [ "$exist" -eq 0 ] && return 0
 321
 322         config_get addrs "$cfg" addr
 323         i=0
 324         for addr in $addrs; do
 325                 [ "$i" -ge 3 ] && break
 326                 validate_ip6addr "$addr" || continue
 327                 addr_list="$addr_list $addr"
 328                 i=$(($i+1))
 329         done
 330
 331         if [ -z "$addr_list" ]; then
 332                 addr=$(get_ip6addr "$IFNAME" link) || return 0
 333                 addr_list=" ${addr%%[/]*}"
 334         fi
 335
 336         printf '\n\tRDNSS%s\n\t{\n' "$addr_list"
 337
 338         for name in $RADVD_RDNSS_STRING_OPTIONS; do
 339                 config_get value "$cfg" "$name"
 340                 validate_radvd_string "$value" || continue
 341                 printf '\t\t%s %s;\n' "$name" "$value"
 342         done
 343
 344         printf '\t};\n'
 345
 346         return 0
 347 }
 348
 349 radvd_write_dnssl() {
 350         local cfg=$1
 351         validate_varname "$cfg" || return 0
 352         local ignore
 353         local interfaces
 354         local interface
 355         local suffixes
 356         local suffix
 357         local suffix_list
 358         local name
 359         local value
 360
 361         config_get_bool ignore "$cfg" ignore 0
 362         [ "$ignore" -ne 0 ] && return 0
 363
 364         config_get interfaces "$cfg" interface
 365         exist=0
 366         for interface in $interfaces; do
 367                 [ "$INTERFACE" = "$interface" ] && exist=1
 368         done
 369         [ "$exist" -eq 0 ] && return 0
 370
 371         config_get suffixes "$cfg" suffix
 372         for suffix in $suffixes; do
 373                 validate_radvd_string "$suffix" || continue
 374                 suffix_list="$suffix_list $suffix"
 375         done
 376
 377         printf '\n\tDNSSL%s\n\t{\n' "$suffix_list"
 378
 379         for name in $RADVD_DNSSL_STRING_OPTIONS; do
 380                 config_get value "$cfg" "$name"
 381                 validate_radvd_string "$value" || continue
 382                 printf '\t\t%s %s;\n' "$name" "$value"
 383         done
 384
 385         printf '\t};\n'
 386
 387         return 0
 388 }
 389
 390 radvd_write_config() {
 391         include /lib/network
 392
 393         RADVD_INTERFACES=
 394         config_foreach radvd_add_interface interface
 395         config_foreach radvd_add_interface prefix
 396         config_foreach radvd_add_interface route
 397         config_foreach radvd_add_interface RDNSS
 398         config_foreach radvd_add_interface DNSSL
 399
 400         for INTERFACE in $RADVD_INTERFACES; do
 401                 IFNAME=$(get_ifname "$INTERFACE") || continue
 402                 printf 'interface %s\n{\n' "$IFNAME"
 403                 config_foreach radvd_write_interface interface
 404                 config_foreach radvd_write_prefix prefix
 405                 config_foreach radvd_write_route route
 406                 config_foreach radvd_write_rdnss rdnss
 407                 config_foreach radvd_write_dnssl dnssl
 408                 printf '};\n\n'
 409         done
 410
 411         return 0
 412 }
 413
 414 start() {
 415         config_load radvd
 416
 417         RADVD_CONFIG_FILE=
 418         config_foreach radvd_find_config_file radvd
 419
 420         if [ -z "$RADVD_CONFIG_FILE" ]; then
 421                 mkdir -p -- /var/etc/
 422                 radvd_write_config > /var/etc/radvd.conf
 423                 if [ -s "/var/etc/radvd.conf" ]; then
 424                         RADVD_CONFIG_FILE=/var/etc/radvd.conf
 425                 fi
 426         fi
 427
 428         [ -z "$RADVD_CONFIG_FILE" ] && return 1
 429
 430         sysctl -w net.ipv6.conf.all.forwarding=1 > /dev/null 2> /dev/null
 431
 432         service_start /usr/sbin/radvd -C "$RADVD_CONFIG_FILE" -m stderr_syslog -p /var/run/radvd.pid
 433 }
 434
 435 stop() {
 436         service_stop /usr/sbin/radvd
 437 }