package/network/services/dnsmasq/files/dnsmasq.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2007-2012 OpenWrt.org
   3
   4 START=19
   5
   6 USE_PROCD=1
   7 PROG=/usr/sbin/dnsmasq
   8
   9 ADD_LOCAL_DOMAIN=1
  10 ADD_LOCAL_HOSTNAME=1
  11 ADD_WAN_FQDN=0
  12 ADD_LOCAL_FQDN=""
  13
  14 BASECONFIGFILE="/var/etc/dnsmasq.conf"
  15 BASEHOSTFILE="/tmp/hosts/dhcp"
  16 BASETIMESTAMPFILE="/etc/dnsmasq.time"
  17 TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
  18 TIMEVALIDFILE="/var/state/dnsmasqsec"
  19 BASEDHCPSTAMPFILE="/var/run/dnsmasq"
  20
  21 DNSMASQ_DHCP_VER=4
  22
  23 xappend() {
  24         local value="$1"
  25
  26         echo "${value#--}" >> $CONFIGFILE_TMP
  27 }
  28
  29 hex_to_hostid() {
  30         local var="$1"
  31         local hex="${2#0x}" # strip optional "0x" prefix
  32
  33         if [ -n "${hex//[0-9a-fA-F]/}" ]; then
  34                 # is invalid hex literal
  35                 return 1
  36         fi
  37
  38         # convert into host id
  39         export "$var=$(
  40                 printf "%0x:%0x" \
  41                 $(((0x$hex >> 16) % 65536)) \
  42                 $(( 0x$hex        % 65536))
  43                 )"
  44
  45         return 0
  46 }
  47
  48 dhcp_calc() {
  49         local ip="$1"
  50         local res=0
  51
  52         while [ -n "$ip" ]; do
  53                 part="${ip%%.*}"
  54                 res="$(($res * 256))"
  55                 res="$(($res + $part))"
  56                 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
  57         done
  58         echo "$res"
  59 }
  60
  61 dhcp_check() {
  62         local ifname="$1"
  63         local stamp="${BASEDHCPSTAMPFILE_CFG}.${ifname}.dhcp"
  64         local rv=0
  65
  66         [ -s "$stamp" ] && return $(cat "$stamp")
  67
  68         # If there's no carrier yet, skip this interface.
  69         # The init script will be called again once the link is up
  70         case "$(devstatus "$ifname" | jsonfilter -e @.carrier)" in
  71                 false) return 1;;
  72         esac
  73
  74         udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
  75
  76         [ $rv -eq 1 ] && \
  77                 logger -t dnsmasq \
  78                         "found already running DHCP-server on interface '$ifname'" \
  79                         "refusing to start, use 'option force 1' to override"
  80
  81         echo $rv > "$stamp"
  82         return $rv
  83 }
  84
  85 log_once() {
  86         pidof dnsmasq >/dev/null || \
  87                 logger -t dnsmasq "$@"
  88 }
  89
  90 append_bool() {
  91         local section="$1"
  92         local option="$2"
  93         local value="$3"
  94         local _loctmp
  95         config_get_bool _loctmp "$section" "$option" 0
  96         [ $_loctmp -gt 0 ] && xappend "$value"
  97 }
  98
  99 append_parm() {
 100         local section="$1"
 101         local option="$2"
 102         local switch="$3"
 103         local default="$4"
 104         local _loctmp
 105         config_get _loctmp "$section" "$option" "$default"
 106         [ -z "$_loctmp" ] && return 0
 107         xappend "$switch=$_loctmp"
 108 }
 109
 110 append_server() {
 111         xappend "--server=$1"
 112 }
 113
 114 append_address() {
 115         xappend "--address=$1"
 116 }
 117
 118 append_ipset() {
 119         xappend "--ipset=$1"
 120 }
 121
 122 append_interface() {
 123         network_get_device ifname "$1" || return
 124         xappend "--interface=$ifname"
 125 }
 126
 127 append_notinterface() {
 128         network_get_device ifname "$1" || return
 129         xappend "--except-interface=$ifname"
 130 }
 131
 132 append_addnhosts() {
 133         xappend "--addn-hosts=$1"
 134 }
 135
 136 append_bogusnxdomain() {
 137         xappend "--bogus-nxdomain=$1"
 138 }
 139
 140 append_pxe_service() {
 141         xappend "--pxe-service=$1"
 142 }
 143
 144 filter_dnsmasq() {
 145         local cfg="$1" func="$2" match_cfg="$3" found_cfg
 146
 147         # use entry when no instance entry set, or if it matches
 148         config_get found_cfg "$cfg" "instance"
 149         if [ -z "$found_cfg" -o "$found_cfg" = "$match_cfg" ]; then
 150                 $func $cfg
 151         fi
 152 }
 153
 154 dhcp_subscrid_add() {
 155         local cfg="$1"
 156
 157         config_get networkid "$cfg" networkid
 158         [ -n "$networkid" ] || return 0
 159
 160         config_get subscriberid "$cfg" subscriberid
 161         [ -n "$subscriberid" ] || return 0
 162
 163         xappend "--dhcp-subscrid=$networkid,$subscriberid"
 164
 165         config_get_bool force "$cfg" force 0
 166
 167         dhcp_option_add "$cfg" "$networkid" "$force"
 168 }
 169
 170 dhcp_remoteid_add() {
 171         local cfg="$1"
 172
 173         config_get networkid "$cfg" networkid
 174         [ -n "$networkid" ] || return 0
 175
 176         config_get remoteid "$cfg" remoteid
 177         [ -n "$remoteid" ] || return 0
 178
 179         xappend "--dhcp-remoteid=$networkid,$remoteid"
 180
 181         config_get_bool force "$cfg" force 0
 182
 183         dhcp_option_add "$cfg" "$networkid" "$force"
 184 }
 185
 186 dhcp_circuitid_add() {
 187         # TODO: DHCPV6 does not have circuitid; catch "option6:"
 188         local cfg="$1"
 189
 190         config_get networkid "$cfg" networkid
 191         [ -n "$networkid" ] || return 0
 192
 193         config_get circuitid "$cfg" circuitid
 194         [ -n "$circuitid" ] || return 0
 195
 196         xappend "--dhcp-circuitid=$networkid,$circuitid"
 197
 198         config_get_bool force "$cfg" force 0
 199
 200         dhcp_option_add "$cfg" "$networkid" "$force"
 201 }
 202
 203 dhcp_userclass_add() {
 204         local cfg="$1"
 205
 206         config_get networkid "$cfg" networkid
 207         [ -n "$networkid" ] || return 0
 208
 209         config_get userclass "$cfg" userclass
 210         [ -n "$userclass" ] || return 0
 211
 212         xappend "--dhcp-userclass=$networkid,$userclass"
 213
 214         config_get_bool force "$cfg" force 0
 215
 216         dhcp_option_add "$cfg" "$networkid" "$force"
 217 }
 218
 219 dhcp_vendorclass_add() {
 220         # TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
 221         local cfg="$1"
 222
 223         config_get networkid "$cfg" networkid
 224         [ -n "$networkid" ] || return 0
 225
 226         config_get vendorclass "$cfg" vendorclass
 227         [ -n "$vendorclass" ] || return 0
 228
 229         xappend "--dhcp-vendorclass=$networkid,$vendorclass"
 230
 231         config_get_bool force "$cfg" force 0
 232
 233         dhcp_option_add "$cfg" "$networkid" "$force"
 234 }
 235
 236 dhcp_match_add() {
 237         local cfg="$1"
 238
 239         config_get networkid "$cfg" networkid
 240         [ -n "$networkid" ] || return 0
 241
 242         config_get match "$cfg" match
 243         [ -n "$match" ] || return 0
 244
 245         xappend "--dhcp-match=$networkid,$match"
 246
 247         config_get_bool force "$cfg" force 0
 248
 249         dhcp_option_add "$cfg" "$networkid" "$force"
 250 }
 251
 252 dhcp_host_add() {
 253         local cfg="$1"
 254         local hosttag nametime addrs
 255
 256         config_get_bool force "$cfg" force 0
 257
 258         config_get networkid "$cfg" networkid
 259         [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
 260
 261         config_get_bool enable "$cfg" enable 1
 262         [ "$enable" = "0" ] && return 0
 263
 264         config_get name "$cfg" name
 265         config_get ip "$cfg" ip
 266         config_get hostid "$cfg" hostid
 267
 268         [ -n "$ip" -o -n "$name" -o -n "$hostid" ] || return 0
 269
 270         config_get_bool dns "$cfg" dns 0
 271         [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
 272                 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE
 273         }
 274
 275         config_get mac "$cfg" mac
 276         config_get duid "$cfg" duid
 277         config_get tag "$cfg" tag
 278
 279         if [ -n "$mac" ]; then
 280                 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
 281                 # many MAC are possible to track a laptop ON/OFF dock
 282                 macs=""
 283                 for m in $mac; do append macs "$m" ","; done
 284         fi
 285
 286         if [ $DNSMASQ_DHCP_VER -eq 6 -a -n "$duid" ]; then
 287                 # --dhcp-host=id:00:03:00:01:12:00:00:01:02:03,[::beef],lap
 288                 # one (virtual) machine gets one DUID per RFC3315
 289                 duids="id:${duid// */}"
 290         fi
 291
 292         if [ -z "$macs" -a -z "$duids" ]; then
 293                 # --dhcp-host=lap,192.168.0.199,[::beef]
 294                 [ -n "$name" ] || return 0
 295                 macs="$name"
 296                 name=""
 297         fi
 298
 299         if [ -n "$hostid" ]; then
 300                         hex_to_hostid hostid "$hostid"
 301         fi
 302
 303         config_get_bool broadcast "$cfg" broadcast 0
 304         config_get leasetime "$cfg" leasetime
 305
 306         [ "$broadcast" = "0" ] && broadcast= || broadcast=",set:needs-broadcast"
 307
 308         hosttag="${networkid:+,set:${networkid}}${tag:+,set:${tag}}$broadcast"
 309         nametime="${name:+,$name}${leasetime:+,$leasetime}"
 310
 311         if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
 312                 addrs="${ip:+,$ip}${hostid:+,[::$hostid]}"
 313                 xappend "--dhcp-host=$macs${duids:+,$duids}$hosttag$addrs$nametime"
 314         else
 315                 xappend "--dhcp-host=$macs$hosttag${ip:+,$ip}$nametime"
 316         fi
 317 }
 318
 319 dhcp_this_host_add() {
 320         local net="$1"
 321         local ifname="$2"
 322         local mode="$3"
 323         local routerstub routername ifdashname
 324         local lanaddr lanaddr6 lanaddrs6 ulaprefix
 325
 326         if [ "$mode" -gt 0 ] ; then
 327                 ifdashname="${ifname//./-}"
 328                 routerstub="$( md5sum /etc/os-release )"
 329                 routerstub="router-${routerstub// */}"
 330                 routername="$( uci_get system @system[0] hostname $routerstub )"
 331
 332                 if [ "$mode" -gt 1 ] ; then
 333                         if [ "$mode" -gt 2 ] ; then
 334                                 if [ "$mode" -gt 3 ] ; then
 335                                         xappend "--interface-name=$ifdashname.$routername.$DOMAIN,$ifname"
 336                                 fi
 337
 338                                 xappend "--interface-name=$routername.$DOMAIN,$ifname"
 339                         fi
 340
 341                         # All IP addresses discovered by dnsmasq will be labeled (except fe80::)
 342                         xappend "--interface-name=$routername,$ifname"
 343
 344                 else
 345                         # This uses a static host file entry for only limited addresses.
 346                         # Use dnsmasq option "--expandhosts" to enable FQDN on host files.
 347                         ulaprefix="$(uci_get network @globals[0] ula_prefix)"
 348                         network_get_ipaddr lanaddr "$net"
 349                         network_get_ipaddrs6 lanaddrs6 "$net"
 350
 351                         if [ -n "$lanaddr" ] ; then
 352                                 dhcp_domain_add "" "$routername" "$lanaddr"
 353                         fi
 354
 355                         if [ -n "$ulaprefix" -a -n "$lanaddrs6" ] ; then
 356                                 for lanaddr6 in $lanaddrs6 ; do
 357                                         case "$lanaddr6" in
 358                                         "${ulaprefix%%:/*}"*)
 359                                                         dhcp_domain_add "" "$routername" "$lanaddr6"
 360                                                         ;;
 361                                         esac
 362                                 done
 363                         fi
 364                 fi
 365         fi
 366 }
 367
 368 dhcp_tag_add() {
 369         # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
 370         local cfg="$1"
 371
 372         tag="$cfg"
 373
 374         [ -n "$tag" ] || return 0
 375
 376         config_get_bool force "$cfg" force 0
 377         [ "$force" = "0" ] && force=
 378
 379         config_get option "$cfg" dhcp_option
 380         for o in $option; do
 381                 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
 382         done
 383 }
 384
 385 dhcp_mac_add() {
 386         local cfg="$1"
 387
 388         config_get networkid "$cfg" networkid
 389         [ -n "$networkid" ] || return 0
 390
 391         config_get mac "$cfg" mac
 392         [ -n "$mac" ] || return 0
 393
 394         xappend "--dhcp-mac=$networkid,$mac"
 395
 396         dhcp_option_add "$cfg" "$networkid"
 397 }
 398
 399 dhcp_boot_add() {
 400         # TODO: BOOTURL is different between DHCPv4 and DHCPv6
 401         local cfg="$1"
 402
 403         config_get networkid "$cfg" networkid
 404
 405         config_get filename "$cfg" filename
 406         [ -n "$filename" ] || return 0
 407
 408         config_get servername "$cfg" servername
 409         config_get serveraddress "$cfg" serveraddress
 410
 411         [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
 412
 413         xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
 414
 415         config_get_bool force "$cfg" force 0
 416
 417         dhcp_option_add "$cfg" "$networkid" "$force"
 418 }
 419
 420
 421 dhcp_add() {
 422         local cfg="$1"
 423         local dhcp6range="::"
 424         local nettag
 425
 426         config_get net "$cfg" interface
 427         [ -n "$net" ] || return 0
 428
 429         config_get networkid "$cfg" networkid
 430         [ -n "$networkid" ] || networkid="$net"
 431
 432         network_get_subnet subnet "$net" || return 0
 433         network_get_device ifname "$net" || return 0
 434         network_get_protocol proto "$net" || return 0
 435
 436         [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
 437                 DNS_SERVERS="$DNS_SERVERS $dnsserver"
 438         }
 439
 440         append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && {
 441                 # Many ISP do not have useful names for DHCP customers (your WAN).
 442                 dhcp_this_host_add "$net" "$ifname" "$ADD_WAN_FQDN"
 443                 return 0
 444         }
 445
 446         # Do not support non-static interfaces for now
 447         [ static = "$proto" ] || return 0
 448
 449         # Override interface netmask with dhcp config if applicable
 450         config_get netmask "$cfg" netmask "${subnet##*/}"
 451
 452         #check for an already active dhcp server on the interface, unless 'force' is set
 453         config_get_bool force "$cfg" force 0
 454         [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
 455
 456         config_get start "$cfg" start 100
 457         config_get limit "$cfg" limit 150
 458         config_get leasetime "$cfg" leasetime 12h
 459         config_get options "$cfg" options
 460         config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
 461
 462         config_get dhcpv4 "$cfg" dhcpv4
 463         config_get dhcpv6 "$cfg" dhcpv6
 464
 465         config_get ra "$cfg" ra
 466         config_get ra_management "$cfg" ra_management
 467         config_get ra_preference "$cfg" ra_preference
 468
 469         # Put the router host name on this DHCP served interface address(es)
 470         dhcp_this_host_add "$net" "$ifname" "$ADD_LOCAL_FQDN"
 471
 472         start="$( dhcp_calc "$start" )"
 473         nettag="${networkid:+set:${networkid},}"
 474
 475         if [ "$limit" -gt 0 ] ; then
 476                 limit=$((limit-1))
 477         fi
 478
 479         eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
 480
 481         if [ "$dynamicdhcp" = "0" ] ; then
 482                 END="static"
 483                 dhcp6range="::,static"
 484         else
 485                 dhcp6range="::1000,::ffff"
 486         fi
 487
 488
 489         if [ "$dhcpv4" != "disabled" ] ; then
 490                 xappend "--dhcp-range=$nettag$START,$END,$NETMASK,$leasetime${options:+ $options}"
 491         fi
 492
 493
 494         if [ $DNSMASQ_DHCP_VER -eq 6 -a "$ra" = "server" ] ; then
 495                 # Note: dnsmasq cannot just be a DHCPv6 server (all-in-1)
 496                 # and let some other machine(s) send RA pointing to it.
 497
 498                 case $ra_preference in
 499                 *high*)
 500                         xappend "--ra-param=$ifname,high,0,7200"
 501                         ;;
 502                 *low*)
 503                         xappend "--ra-param=$ifname,low,0,7200"
 504                         ;;
 505                 *)
 506                         # Send UNSOLICITED RA at default interval and live for 2 hours.
 507                         # TODO: convert flexible lease time into route life time (only seconds).
 508                         xappend "--ra-param=$ifname,0,7200"
 509                         ;;
 510                 esac
 511
 512                 if [ "$dhcpv6" = "disabled" ] ; then
 513                         ra_management="3"
 514                 fi
 515
 516
 517                 case $ra_management in
 518                 0)
 519                         # SLACC with DCHP for extended options
 520                         xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-stateless,ra-names"
 521                         ;;
 522                 2)
 523                         # DHCP address and RA only for management redirection
 524                         xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,$leasetime"
 525                         ;;
 526                 3)
 527                         # SLAAC only but dnsmasq attempts to link HOSTNAME, DHCPv4 MAC, and SLAAC
 528                         xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-only,ra-names"
 529                         ;;
 530                 *)
 531                         # SLAAC and full DHCP
 532                         xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,slaac,ra-names,$leasetime"
 533                         ;;
 534                 esac
 535         fi
 536
 537         dhcp_option_add "$cfg" "$networkid"
 538 }
 539
 540 dhcp_option_add() {
 541         # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
 542         local cfg="$1"
 543         local networkid="$2"
 544         local force="$3"
 545
 546         [ "$force" = "0" ] && force=
 547
 548         config_get dhcp_option "$cfg" dhcp_option
 549         for o in $dhcp_option; do
 550                 xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$o"
 551         done
 552
 553 }
 554
 555 dhcp_domain_add() {
 556         local cfg="$1"
 557         local ip name names record
 558
 559         config_get names "$cfg" name "$2"
 560         [ -n "$names" ] || return 0
 561
 562         config_get ip "$cfg" ip "$3"
 563         [ -n "$ip" ] || return 0
 564
 565         for name in $names; do
 566                 record="${record:+$record }$name"
 567         done
 568
 569         echo "$ip $record" >> $HOSTFILE
 570 }
 571
 572 dhcp_srv_add() {
 573         local cfg="$1"
 574
 575         config_get srv "$cfg" srv
 576         [ -n "$srv" ] || return 0
 577
 578         config_get target "$cfg" target
 579         [ -n "$target" ] || return 0
 580
 581         config_get port "$cfg" port
 582         [ -n "$port" ] || return 0
 583
 584         config_get class "$cfg" class
 585         config_get weight "$cfg" weight
 586
 587         local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
 588
 589         xappend "--srv-host=$service"
 590 }
 591
 592 dhcp_mx_add() {
 593         local cfg="$1"
 594         local domain relay pref
 595
 596         config_get domain "$cfg" domain
 597         [ -n "$domain" ] || return 0
 598
 599         config_get relay "$cfg" relay
 600         [ -n "$relay" ] || return 0
 601
 602         config_get pref "$cfg" pref 0
 603
 604         local service="$domain,$relay,$pref"
 605
 606         xappend "--mx-host=$service"
 607 }
 608
 609 dhcp_cname_add() {
 610         local cfg="$1"
 611         local cname target
 612
 613         config_get cname "$cfg" cname
 614         [ -n "$cname" ] || return 0
 615
 616         config_get target "$cfg" target
 617         [ -n "$target" ] || return 0
 618
 619         xappend "--cname=${cname},${target}"
 620 }
 621
 622 dhcp_hostrecord_add() {
 623         local cfg="$1"
 624         local names addresses record val
 625
 626         config_get names "$cfg" name "$2"
 627         if [ -z "$names" ]; then
 628                 return 0
 629         fi
 630
 631         config_get addresses "$cfg" ip "$3"
 632         if [ -z "$addresses" ]; then
 633                 return 0
 634         fi
 635
 636         for val in $names $addresses; do
 637                 record="${record:+$record,}$val"
 638         done
 639
 640         xappend "--host-record=$record"
 641 }
 642
 643 dhcp_relay_add() {
 644         local cfg="$1"
 645         local local_addr server_addr interface
 646
 647         config_get local_addr "$cfg" local_addr
 648         [ -n "$local_addr" ] || return 0
 649
 650         config_get server_addr "$cfg" server_addr
 651         [ -n "$server_addr" ] || return 0
 652
 653         config_get interface "$cfg" interface
 654         if [ -z "$interface" ]; then
 655                 xappend "--dhcp-relay=$local_addr,$server_addr"
 656         else
 657                 xappend "--dhcp-relay=$local_addr,$server_addr,$interface"
 658         fi
 659 }
 660
 661 dnsmasq_start()
 662 {
 663         local cfg="$1" disabled
 664
 665         config_get_bool disabled "$cfg" disabled 0
 666         [ "$disabled" -gt 0 ] && return 0
 667
 668         # reset list of DOMAINS and DNS servers (for each dnsmasq instance)
 669         DNS_SERVERS=""
 670         DOMAIN=""
 671         CONFIGFILE="${BASECONFIGFILE}.${cfg}"
 672         CONFIGFILE_TMP="${CONFIGFILE}.$$"
 673         HOSTFILE="${BASEHOSTFILE}.${cfg}"
 674         TIMESTAMPFILE="${BASETIMESTAMPFILE}.${cfg}"
 675         BASEDHCPSTAMPFILE_CFG="${BASEDHCPSTAMPFILE}.${cfg}"
 676
 677         # before we can call xappend
 678         mkdir -p /var/run/dnsmasq/
 679         mkdir -p $(dirname $CONFIGFILE)
 680         mkdir -p $(dirname $HOSTFILE)
 681         mkdir -p /var/lib/misc
 682         chown dnsmasq:dnsmasq /var/run/dnsmasq
 683
 684         [ -f "$TIMESTAMPFILE" ] && rm -f "$TIMESTAMPFILE"
 685
 686         echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
 687         echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
 688
 689         # if we did this last, we could override auto-generated config
 690         [ -f /etc/dnsmasq.conf ] && {
 691                 xappend "--conf-file=/etc/dnsmasq.conf"
 692         }
 693
 694         $PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
 695
 696
 697         if [ -x /usr/sbin/odhcpd -a -x /etc/init.d/odhcpd ] ; then
 698                 local odhcpd_is_main odhcpd_is_enabled
 699                 config_get odhcpd_is_main odhcpd maindhcp
 700                 /etc/init.d/odhcpd enabled && odhcpd_is_enabled=1 || odhcpd_is_enabled=0
 701
 702
 703                 if [ "$odhcpd_is_enabled" -eq 0 -a "$DHCPv6CAPABLE" -eq 1 ] ; then
 704                         # DHCP V4 and V6 in DNSMASQ
 705                         DNSMASQ_DHCP_VER=6
 706                 elif [ "$odhcpd_is_main" -gt 0 ] ; then
 707                         # ODHCPD is doing it all
 708                         DNSMASQ_DHCP_VER=0
 709                 else
 710                         # You have ODHCPD but use DNSMASQ for DHCPV4
 711                         DNSMASQ_DHCP_VER=4
 712                 fi
 713
 714         elif [ "$DHCPv6CAPABLE" -eq 1 ] ; then
 715                 # DHCP V4 and V6 in DNSMASQ
 716                 DNSMASQ_DHCP_VER=6
 717         else
 718                 DNSMASQ_DHCP_VER=4
 719         fi
 720
 721
 722         append_bool "$cfg" authoritative "--dhcp-authoritative"
 723         append_bool "$cfg" nodaemon "--no-daemon"
 724         append_bool "$cfg" domainneeded "--domain-needed"
 725         append_bool "$cfg" filterwin2k "--filterwin2k"
 726         append_bool "$cfg" nohosts "--no-hosts"
 727         append_bool "$cfg" nonegcache "--no-negcache"
 728         append_bool "$cfg" strictorder "--strict-order"
 729         append_bool "$cfg" logqueries "--log-queries=extra"
 730         append_bool "$cfg" noresolv "--no-resolv"
 731         append_bool "$cfg" localise_queries "--localise-queries"
 732         append_bool "$cfg" readethers "--read-ethers"
 733         append_bool "$cfg" dbus "--enable-dbus"
 734         append_bool "$cfg" boguspriv "--bogus-priv"
 735         append_bool "$cfg" expandhosts "--expand-hosts"
 736         config_get tftp_root "$cfg" "tftp_root"
 737         [ -d "$tftp_root" ] && append_bool "$cfg" enable_tftp "--enable-tftp"
 738         append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
 739         append_bool "$cfg" nonwildcard "--bind-dynamic"
 740         append_bool "$cfg" fqdn "--dhcp-fqdn"
 741         append_bool "$cfg" proxydnssec "--proxy-dnssec"
 742         append_bool "$cfg" localservice "--local-service"
 743         append_bool "$cfg" logdhcp "--log-dhcp"
 744         append_bool "$cfg" quietdhcp "--quiet-dhcp"
 745         append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
 746         append_bool "$cfg" allservers "--all-servers"
 747         append_bool "$cfg" noping "--no-ping"
 748
 749         append_parm "$cfg" logfacility "--log-facility"
 750         append_parm "$cfg" dhcpscript "--dhcp-script"
 751         append_parm "$cfg" cachesize "--cache-size"
 752         append_parm "$cfg" dnsforwardmax "--dns-forward-max"
 753         append_parm "$cfg" port "--port"
 754         append_parm "$cfg" ednspacket_max "--edns-packet-max"
 755         append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
 756         append_parm "$cfg" "queryport" "--query-port"
 757         append_parm "$cfg" "minport" "--min-port"
 758         append_parm "$cfg" "maxport" "--max-port"
 759         append_parm "$cfg" "domain" "--domain"
 760         append_parm "$cfg" "local" "--server"
 761         config_list_foreach "$cfg" "server" append_server
 762         config_list_foreach "$cfg" "address" append_address
 763         config_list_foreach "$cfg" "ipset" append_ipset
 764         config_list_foreach "$cfg" "interface" append_interface
 765         config_list_foreach "$cfg" "notinterface" append_notinterface
 766         config_list_foreach "$cfg" "addnhosts" append_addnhosts
 767         config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
 768         append_parm "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
 769         append_parm "$cfg" "resolvfile" "--resolv-file" "/tmp/resolv.conf.auto"
 770         append_parm "$cfg" "serversfile" "--servers-file"
 771         append_parm "$cfg" "tftp_root" "--tftp-root"
 772         append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
 773         append_parm "$cfg" "local_ttl" "--local-ttl"
 774         append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
 775         config_list_foreach "$cfg" "pxe_service" append_pxe_service
 776         config_get DOMAIN "$cfg" domain
 777
 778         config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
 779         config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
 780         config_get ADD_LOCAL_FQDN "$cfg" add_local_fqdn ""
 781         config_get ADD_WAN_FQDN "$cfg" add_wan_fqdn 0
 782
 783         if [ -z "$ADD_LOCAL_FQDN" ] ; then
 784                 # maintain support for previous UCI
 785                 ADD_LOCAL_FQDN="$ADD_LOCAL_HOSTNAME"
 786         fi
 787
 788         config_get_bool readethers "$cfg" readethers
 789         [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
 790
 791         config_get resolvfile $cfg resolvfile
 792         config_get dhcpscript $cfg dhcpscript
 793
 794         config_get leasefile $cfg leasefile "/tmp/dhcp.leases"
 795         [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
 796         config_get_bool cachelocal "$cfg" cachelocal 1
 797
 798         config_get_bool noresolv "$cfg" noresolv 0
 799         if [ "$noresolv" != "1" ]; then
 800                 config_get resolvfile "$cfg" resolvfile "/tmp/resolv.conf.auto"
 801                 # So jail doesn't complain if file missing
 802                 [ -n "$resolvfile" -a \! -e "$resolvfile" ] && touch "$resolvfile"
 803         fi
 804
 805         config_get hostsfile "$cfg" dhcphostsfile
 806         [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
 807
 808         local rebind
 809         config_get_bool rebind "$cfg" rebind_protection 1
 810         [ $rebind -gt 0 ] && {
 811                 log_once \
 812                         "DNS rebinding protection is active," \
 813                         "will discard upstream RFC1918 responses!"
 814                 xappend "--stop-dns-rebind"
 815
 816                 local rebind_localhost
 817                 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
 818                 [ $rebind_localhost -gt 0 ] && {
 819                         log_once "Allowing 127.0.0.0/8 responses"
 820                         xappend "--rebind-localhost-ok"
 821                 }
 822
 823                 append_rebind_domain() {
 824                         log_once "Allowing RFC1918 responses for domain $1"
 825                         xappend "--rebind-domain-ok=$1"
 826                 }
 827
 828                 config_list_foreach "$cfg" rebind_domain append_rebind_domain
 829         }
 830
 831         config_get_bool dnssec "$cfg" dnssec 0
 832         [ "$dnssec" -gt 0 ] && {
 833                 xappend "--conf-file=$TRUSTANCHORSFILE"
 834                 xappend "--dnssec"
 835                 [ -x /etc/init.d/sysntpd ] && {
 836                         /etc/init.d/sysntpd enabled
 837                         [ "$?" -ne 0 -o "$(uci_get system.ntp.enabled)" = "1" ] && {
 838                                 [ -f "$TIMEVALIDFILE" ] || xappend "--dnssec-no-timecheck"
 839                         }
 840                 }
 841                 append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
 842         }
 843
 844         config_get addmac "$cfg" addmac 0
 845         [ "$addmac" != "0" ] && {
 846                 [ "$addmac" = "1" ] && addmac=
 847                 xappend "--add-mac${addmac:+="$addmac"}"
 848         }
 849
 850         dhcp_option_add "$cfg" "" 0
 851
 852         xappend "--dhcp-broadcast=tag:needs-broadcast"
 853
 854         xappend "--addn-hosts=$(dirname $HOSTFILE)"
 855
 856         config_get dnsmasqconfdir "$cfg" confdir "/tmp/dnsmasq.d"
 857         [ ! -d "$dnsmasqconfdir" ] && mkdir -p $dnsmasqconfdir
 858         xappend "--conf-dir=$dnsmasqconfdir"
 859         xappend "--user=dnsmasq"
 860         xappend "--group=dnsmasq"
 861         echo >> $CONFIGFILE_TMP
 862
 863         config_get_bool enable_tftp "$cfg" enable_tftp 0
 864         [ "$enable_tftp" -gt 0 ] && {
 865                 config_get tftp_root "$cfg" tftp_root
 866                 append EXTRA_MOUNT $tftp_root
 867         }
 868
 869         config_foreach filter_dnsmasq host dhcp_host_add "$cfg"
 870         echo >> $CONFIGFILE_TMP
 871         config_foreach filter_dnsmasq boot dhcp_boot_add "$cfg"
 872         config_foreach filter_dnsmasq mac dhcp_mac_add "$cfg"
 873         config_foreach filter_dnsmasq tag dhcp_tag_add "$cfg"
 874         config_foreach filter_dnsmasq vendorclass dhcp_vendorclass_add "$cfg"
 875         config_foreach filter_dnsmasq userclass dhcp_userclass_add "$cfg"
 876         config_foreach filter_dnsmasq circuitid dhcp_circuitid_add "$cfg"
 877         config_foreach filter_dnsmasq remoteid dhcp_remoteid_add "$cfg"
 878         config_foreach filter_dnsmasq subscrid dhcp_subscrid_add "$cfg"
 879         config_foreach filter_dnsmasq match dhcp_match_add "$cfg"
 880         config_foreach filter_dnsmasq domain dhcp_domain_add "$cfg"
 881         config_foreach filter_dnsmasq hostrecord dhcp_hostrecord_add "$cfg"
 882         config_foreach filter_dnsmasq relay dhcp_relay_add "$cfg"
 883
 884         echo >> $CONFIGFILE_TMP
 885         config_foreach filter_dnsmasq srvhost dhcp_srv_add "$cfg"
 886         config_foreach filter_dnsmasq mxhost dhcp_mx_add "$cfg"
 887         echo >> $CONFIGFILE_TMP
 888
 889
 890         if [ "$DNSMASQ_DHCP_VER" -gt 4 ] ; then
 891                 # Enable RA feature for when/if it is constructed,
 892                 # and RA is selected per interface pool (RA, DHCP, or both),
 893                 # but no one (should) want RA broadcast in syslog
 894                 config_foreach dhcp_add dhcp
 895                 xappend "--enable-ra"
 896                 xappend "--quiet-ra"
 897
 898         elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
 899                 config_foreach dhcp_add dhcp
 900         fi
 901
 902
 903         echo >> $CONFIGFILE_TMP
 904         config_foreach filter_dnsmasq cname dhcp_cname_add "$cfg"
 905         echo >> $CONFIGFILE_TMP
 906
 907         echo >> $CONFIGFILE_TMP
 908         mv -f $CONFIGFILE_TMP $CONFIGFILE
 909
 910         [ "$resolvfile" = "/tmp/resolv.conf.auto" ] && {
 911                 rm -f /tmp/resolv.conf
 912                 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
 913                         echo "search $DOMAIN" >> /tmp/resolv.conf
 914                 }
 915                 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
 916                 for DNS_SERVER in $DNS_SERVERS ; do
 917                         echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
 918                 done
 919         }
 920
 921         procd_open_instance $cfg
 922         procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq."${cfg}".pid
 923         procd_set_param file $CONFIGFILE
 924         procd_set_param respawn
 925
 926         local dnsmasqconffile="/etc/dnsmasq.${cfg}.conf"
 927         if [ ! -r "$dnsmasqconffile" ]; then
 928                 dnsmasqconffile=/etc/dnsmasq.conf
 929         fi
 930
 931         procd_add_jail dnsmasq ubus log
 932         procd_add_jail_mount $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE /etc/passwd /etc/group /etc/TZ /dev/null /dev/urandom $dnsmasqconffile $dnsmasqconfdir $resolvfile $dhcpscript /etc/hosts /etc/ethers $EXTRA_MOUNT
 933         procd_add_jail_mount_rw /var/run/dnsmasq/ $leasefile
 934
 935         procd_close_instance
 936 }
 937
 938 dnsmasq_stop()
 939 {
 940         local cfg="$1"
 941
 942         config_get resolvfile "$cfg" "resolvfile"
 943
 944         #relink /tmp/resolve.conf only for main instance
 945         [ "$resolvfile" = "/tmp/resolv.conf.auto" ] && {
 946                 [ -f /tmp/resolv.conf ] && {
 947                         rm -f /tmp/resolv.conf
 948                         ln -s "$resolvfile" /tmp/resolv.conf
 949                 }
 950         }
 951
 952         rm -f ${BASEDHCPSTAMPFILE}.${cfg}.*.dhcp
 953 }
 954
 955 service_triggers()
 956 {
 957         procd_add_reload_trigger "dhcp"
 958         procd_add_raw_trigger "interface.*" 2000 /etc/init.d/dnsmasq reload
 959 }
 960
 961 boot()
 962 {
 963         BOOT=1
 964         start "$@"
 965 }
 966
 967 start_service() {
 968         local instance="$1"
 969         local instance_found=0
 970
 971         [ -n "$BOOT" ] && return
 972
 973         . /lib/functions/network.sh
 974
 975         config_cb() {
 976                 local type="$1"
 977                 local name="$2"
 978                 if [ "$type" = "dnsmasq" ]; then
 979                         if [ -n "$instance" -a "$instance" = "$name" ]; then
 980                                 instance_found=1
 981                         fi
 982                 fi
 983         }
 984
 985         config_load dhcp
 986
 987         if [ -n "$instance" ]; then
 988                 [ "$instance_found" -gt 0 ] || return
 989                 dnsmasq_start "$instance"
 990         else
 991                 config_foreach dnsmasq_start dnsmasq
 992         fi
 993 }
 994
 995 reload_service() {
 996         rc_procd start_service "$@"
 997         return 0
 998 }
 999
1000 stop_service() {
1001         local instance="$1"
1002         local instance_found=0
1003
1004         config_cb() {
1005                 local type="$1"
1006                 local name="$2"
1007                 if [ "$type" = "dnsmasq" ]; then
1008                         if [ -n "$instance" -a "$instance" = "$name" ]; then
1009                                 instance_found=1
1010                         fi
1011                 fi
1012         }
1013
1014         config_load dhcp
1015
1016         if [ -n "$instance" ]; then
1017                 [ "$instance_found" -gt 0 ] || return
1018                 dnsmasq_stop "$instance"
1019         else
1020                 config_foreach dnsmasq_stop dnsmasq
1021         fi
1022 }