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 TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
  17 TIMEVALIDFILE="/var/state/dnsmasqsec"
  18 BASEDHCPSTAMPFILE="/var/run/dnsmasq"
  19 DHCPBOGUSHOSTNAMEFILE="/usr/share/dnsmasq/dhcpbogushostname.conf"
  20 RFC6761FILE="/usr/share/dnsmasq/rfc6761.conf"
  21 DHCPSCRIPT="/usr/lib/dnsmasq/dhcp-script.sh"
  22
  23 DNSMASQ_DHCP_VER=4
  24
  25 dnsmasq_ignore_opt() {
  26         local opt="$1"
  27
  28         if [ -z "$dnsmasq_features" ]; then
  29                 dnsmasq_features="$(dnsmasq --version | grep -m1 'Compile time options:' | cut -d: -f2) "
  30                 [ "${dnsmasq_features#* DHCP }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp=1
  31                 [ "${dnsmasq_features#* DHCPv6 }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp6=1
  32                 [ "${dnsmasq_features#* DNSSEC }" = "$dnsmasq_features" ] || dnsmasq_has_dnssec=1
  33                 [ "${dnsmasq_features#* TFTP }" = "$dnsmasq_features" ] || dnsmasq_has_tftp=1
  34                 [ "${dnsmasq_features#* ipset }" = "$dnsmasq_features" ] || dnsmasq_has_ipset=1
  35         fi
  36
  37         case "$opt" in
  38                 dhcp-duid|\
  39                 ra-param)
  40                         [ -z "$dnsmasq_has_dhcp6" ] ;;
  41                 dhcp-*|\
  42                 bootp-*|\
  43                 pxe-*)
  44                         [ -z "$dnsmasq_has_dhcp" ] ;;
  45                 dnssec*|\
  46                 trust-anchor)
  47                         if [ -z "$dnsmasq_has_dnssec" ]; then
  48                                 echo "dnsmasq: \"$opt\" requested, but dnssec support is not available" >&2
  49                                 exit 1
  50                         fi
  51                         return 1
  52                         ;;
  53                 tftp-*)
  54                         [ -z "$dnsmasq_has_tftp" ] ;;
  55                 ipset)
  56                         [ -z "$dnsmasq_has_ipset" ] ;;
  57                 *)
  58                         return 1
  59         esac
  60 }
  61
  62 xappend() {
  63         local value="${1#--}"
  64         local opt="${value%%=*}"
  65
  66         if ! dnsmasq_ignore_opt "$opt"; then
  67                 echo "$value" >>$CONFIGFILE_TMP
  68         fi
  69 }
  70
  71 hex_to_hostid() {
  72         local var="$1"
  73         local hex="${2#0x}" # strip optional "0x" prefix
  74
  75         if [ -n "${hex//[0-9a-fA-F]/}" ]; then
  76                 # is invalid hex literal
  77                 return 1
  78         fi
  79
  80         # convert into host id
  81         export "$var=$(
  82                 printf "%0x:%0x" \
  83                 $(((0x$hex >> 16) % 65536)) \
  84                 $(( 0x$hex        % 65536))
  85                 )"
  86
  87         return 0
  88 }
  89
  90 dhcp_calc() {
  91         local ip="$1"
  92         local res=0
  93
  94         while [ -n "$ip" ]; do
  95                 part="${ip%%.*}"
  96                 res="$(($res * 256))"
  97                 res="$(($res + $part))"
  98                 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
  99         done
 100         echo "$res"
 101 }
 102
 103 dhcp_check() {
 104         local ifname="$1"
 105         local stamp="${BASEDHCPSTAMPFILE_CFG}.${ifname}.dhcp"
 106         local rv=0
 107
 108         [ -s "$stamp" ] && return $(cat "$stamp")
 109
 110         # If interface is down, skip it.
 111         # The init script will be called again once the link is up
 112         case "$(devstatus "$ifname" | jsonfilter -e @.up)" in
 113                 false) return 1;;
 114         esac
 115
 116         udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
 117
 118         echo $rv > "$stamp"
 119         return $rv
 120 }
 121
 122 log_once() {
 123         pidof dnsmasq >/dev/null || \
 124                 logger -t dnsmasq "$@"
 125 }
 126
 127 has_handler() {
 128         local file
 129
 130         for file in /etc/hotplug.d/dhcp/* /etc/hotplug.d/tftp/* /etc/hotplug.d/neigh/*; do
 131                 [ -f "$file" ] && return 0
 132         done
 133
 134         return 1
 135 }
 136
 137 append_bool() {
 138         local section="$1"
 139         local option="$2"
 140         local value="$3"
 141         local default="$4"
 142         local _loctmp
 143         [ -z "$default" ] && default="0"
 144         config_get_bool _loctmp "$section" "$option" "$default"
 145         [ $_loctmp -gt 0 ] && xappend "$value"
 146 }
 147
 148 append_parm() {
 149         local section="$1"
 150         local option="$2"
 151         local switch="$3"
 152         local default="$4"
 153         local _loctmp
 154         config_get _loctmp "$section" "$option" "$default"
 155         [ -z "$_loctmp" ] && return 0
 156         xappend "$switch=$_loctmp"
 157 }
 158
 159 append_server() {
 160         xappend "--server=$1"
 161 }
 162
 163 append_rev_server() {
 164         xappend "--rev-server=$1"
 165 }
 166
 167 append_address() {
 168         xappend "--address=$1"
 169 }
 170
 171 append_ipset() {
 172         xappend "--ipset=$1"
 173 }
 174
 175 append_connmark_allowlist() {
 176         xappend "--connmark-allowlist=$1"
 177 }
 178
 179 append_interface() {
 180         network_get_device ifname "$1" || ifname="$1"
 181         xappend "--interface=$ifname"
 182 }
 183
 184 append_listenaddress() {
 185         xappend "--listen-address=$1"
 186 }
 187
 188 append_notinterface() {
 189         network_get_device ifname "$1" || ifname="$1"
 190         xappend "--except-interface=$ifname"
 191 }
 192
 193 append_addnhosts() {
 194         xappend "--addn-hosts=$1"
 195 }
 196
 197 append_bogusnxdomain() {
 198         xappend "--bogus-nxdomain=$1"
 199 }
 200
 201 append_pxe_service() {
 202         xappend "--pxe-service=$1"
 203 }
 204
 205 append_interface_name() {
 206         xappend "--interface-name=$1,$2"
 207 }
 208
 209 filter_dnsmasq() {
 210         local cfg="$1" func="$2" match_cfg="$3" found_cfg
 211
 212         # use entry when no instance entry set, or if it matches
 213         config_get found_cfg "$cfg" "instance"
 214         if [ -z "$found_cfg" ] || [ "$found_cfg" = "$match_cfg" ]; then
 215                 $func $cfg
 216         fi
 217 }
 218
 219 dhcp_subscrid_add() {
 220         local cfg="$1"
 221
 222         config_get networkid "$cfg" networkid
 223         [ -n "$networkid" ] || return 0
 224
 225         config_get subscriberid "$cfg" subscriberid
 226         [ -n "$subscriberid" ] || return 0
 227
 228         xappend "--dhcp-subscrid=$networkid,$subscriberid"
 229
 230         config_get_bool force "$cfg" force 0
 231
 232         dhcp_option_add "$cfg" "$networkid" "$force"
 233 }
 234
 235 dhcp_remoteid_add() {
 236         local cfg="$1"
 237
 238         config_get networkid "$cfg" networkid
 239         [ -n "$networkid" ] || return 0
 240
 241         config_get remoteid "$cfg" remoteid
 242         [ -n "$remoteid" ] || return 0
 243
 244         xappend "--dhcp-remoteid=$networkid,$remoteid"
 245
 246         config_get_bool force "$cfg" force 0
 247
 248         dhcp_option_add "$cfg" "$networkid" "$force"
 249 }
 250
 251 dhcp_circuitid_add() {
 252         # TODO: DHCPV6 does not have circuitid; catch "option6:"
 253         local cfg="$1"
 254
 255         config_get networkid "$cfg" networkid
 256         [ -n "$networkid" ] || return 0
 257
 258         config_get circuitid "$cfg" circuitid
 259         [ -n "$circuitid" ] || return 0
 260
 261         xappend "--dhcp-circuitid=$networkid,$circuitid"
 262
 263         config_get_bool force "$cfg" force 0
 264
 265         dhcp_option_add "$cfg" "$networkid" "$force"
 266 }
 267
 268 dhcp_userclass_add() {
 269         local cfg="$1"
 270
 271         config_get networkid "$cfg" networkid
 272         [ -n "$networkid" ] || return 0
 273
 274         config_get userclass "$cfg" userclass
 275         [ -n "$userclass" ] || return 0
 276
 277         xappend "--dhcp-userclass=$networkid,$userclass"
 278
 279         config_get_bool force "$cfg" force 0
 280
 281         dhcp_option_add "$cfg" "$networkid" "$force"
 282 }
 283
 284 dhcp_vendorclass_add() {
 285         # TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
 286         local cfg="$1"
 287
 288         config_get networkid "$cfg" networkid
 289         [ -n "$networkid" ] || return 0
 290
 291         config_get vendorclass "$cfg" vendorclass
 292         [ -n "$vendorclass" ] || return 0
 293
 294         xappend "--dhcp-vendorclass=$networkid,$vendorclass"
 295
 296         config_get_bool force "$cfg" force 0
 297
 298         dhcp_option_add "$cfg" "$networkid" "$force"
 299 }
 300
 301 dhcp_match_add() {
 302         local cfg="$1"
 303
 304         config_get networkid "$cfg" networkid
 305         [ -n "$networkid" ] || return 0
 306
 307         config_get match "$cfg" match
 308         [ -n "$match" ] || return 0
 309
 310         xappend "--dhcp-match=$networkid,$match"
 311
 312         config_get_bool force "$cfg" force 0
 313
 314         dhcp_option_add "$cfg" "$networkid" "$force"
 315 }
 316
 317 dhcp_host_add() {
 318         local cfg="$1"
 319         local hosttag nametime addrs duids macs tags
 320
 321         config_get_bool force "$cfg" force 0
 322
 323         config_get networkid "$cfg" networkid
 324         [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
 325
 326         config_get_bool enable "$cfg" enable 1
 327         [ "$enable" = "0" ] && return 0
 328
 329         config_get name "$cfg" name
 330         config_get ip "$cfg" ip
 331         config_get hostid "$cfg" hostid
 332
 333         [ -z "$ip" ] && [ -z "$name" ] && [ -z "$hostid" ] && return 0
 334
 335         config_get_bool dns "$cfg" dns 0
 336         [ "$dns" = "1" ] && [ -n "$ip" ] && [ -n "$name" ] && {
 337                 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE_TMP
 338         }
 339
 340         config_get mac "$cfg" mac
 341         config_get duid "$cfg" duid
 342         config_get tag "$cfg" tag
 343
 344         if [ -n "$mac" ]; then
 345                 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
 346                 # many MAC are possible to track a laptop ON/OFF dock
 347                 for m in $mac; do append macs "$m" ","; done
 348         fi
 349
 350         if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ -n "$duid" ]; then
 351                 # --dhcp-host=id:00:03:00:01:12:00:00:01:02:03,[::beef],lap
 352                 # one (virtual) machine gets one DUID per RFC3315
 353                 duids="id:${duid// */}"
 354         fi
 355
 356         if [ -z "$macs" ] && [ -z "$duids" ]; then
 357                 # --dhcp-host=lap,192.168.0.199,[::beef]
 358                 [ -n "$name" ] || return 0
 359                 macs="$name"
 360                 name=""
 361         fi
 362
 363         if [ -n "$hostid" ]; then
 364                 hex_to_hostid hostid "$hostid"
 365         fi
 366
 367         if [ -n "$tag" ]; then
 368                 for t in $tag; do append tags "$t" ",set:"; done
 369         fi
 370
 371         config_get_bool broadcast "$cfg" broadcast 0
 372         config_get leasetime "$cfg" leasetime
 373
 374         [ "$broadcast" = "0" ] && broadcast= || broadcast=",set:needs-broadcast"
 375
 376         hosttag="${networkid:+,set:${networkid}}${tags:+,set:${tags}}$broadcast"
 377         nametime="${name:+,$name}${leasetime:+,$leasetime}"
 378
 379         if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
 380                 addrs="${ip:+,$ip}${hostid:+,[::$hostid]}"
 381                 xappend "--dhcp-host=$macs${duids:+,$duids}$hosttag$addrs$nametime"
 382         else
 383                 xappend "--dhcp-host=$macs$hosttag${ip:+,$ip}$nametime"
 384         fi
 385 }
 386
 387 dhcp_this_host_add() {
 388         local net="$1"
 389         local ifname="$2"
 390         local mode="$3"
 391         local routerstub routername ifdashname
 392         local lanaddr lanaddr6 lanaddrs6 ulaprefix
 393
 394         if [ "$mode" -gt 0 ] ; then
 395                 ifdashname="${ifname//./-}"
 396                 routerstub="$( md5sum /etc/os-release )"
 397                 routerstub="router-${routerstub// */}"
 398                 routername="$( uci_get system @system[0] hostname $routerstub )"
 399
 400                 if [ "$mode" -gt 1 ] ; then
 401                         if [ "$mode" -gt 2 ] ; then
 402                                 if [ "$mode" -gt 3 ] ; then
 403                                         append_interface_name "$ifdashname.$routername.$DOMAIN" "$ifname"
 404                                 fi
 405
 406                                 append_interface_name "$routername.$DOMAIN" "$ifname"
 407                         fi
 408
 409                         # All IP addresses discovered by dnsmasq will be labeled (except fe80::)
 410                         append_interface_name "$routername" "$ifname"
 411
 412                 else
 413                         # This uses a static host file entry for only limited addresses.
 414                         # Use dnsmasq option "--expandhosts" to enable FQDN on host files.
 415                         ulaprefix="$(uci_get network @globals[0] ula_prefix)"
 416                         network_get_ipaddr lanaddr "$net"
 417                         network_get_ipaddrs6 lanaddrs6 "$net"
 418
 419                         if [ -n "$lanaddr" ] ; then
 420                                 dhcp_domain_add "" "$routername" "$lanaddr"
 421                         fi
 422
 423                         if [ -n "$ulaprefix" ] && [ -n "$lanaddrs6" ] ; then
 424                                 for lanaddr6 in $lanaddrs6 ; do
 425                                         case "$lanaddr6" in
 426                                         "${ulaprefix%%:/*}"*)
 427                                                 dhcp_domain_add "" "$routername" "$lanaddr6"
 428                                                 ;;
 429                                         esac
 430                                 done
 431                         fi
 432                 fi
 433         fi
 434 }
 435
 436 dhcp_tag_add() {
 437         # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
 438         local cfg="$1"
 439
 440         tag="$cfg"
 441
 442         [ -n "$tag" ] || return 0
 443
 444         config_get_bool force "$cfg" force 0
 445         [ "$force" = "0" ] && force=
 446
 447         config_get option "$cfg" dhcp_option
 448         for o in $option; do
 449                 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
 450         done
 451 }
 452
 453 dhcp_mac_add() {
 454         local cfg="$1"
 455
 456         config_get networkid "$cfg" networkid
 457         [ -n "$networkid" ] || return 0
 458
 459         config_get mac "$cfg" mac
 460         [ -n "$mac" ] || return 0
 461
 462         xappend "--dhcp-mac=$networkid,$mac"
 463
 464         dhcp_option_add "$cfg" "$networkid"
 465 }
 466
 467 dhcp_boot_add() {
 468         # TODO: BOOTURL is different between DHCPv4 and DHCPv6
 469         local cfg="$1"
 470
 471         config_get networkid "$cfg" networkid
 472
 473         config_get filename "$cfg" filename
 474         [ -n "$filename" ] || return 0
 475
 476         config_get servername "$cfg" servername
 477         config_get serveraddress "$cfg" serveraddress
 478
 479         [ -n "$serveraddress" ] && [ ! -n "$servername" ] && return 0
 480
 481         xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
 482
 483         config_get_bool force "$cfg" force 0
 484
 485         dhcp_option_add "$cfg" "$networkid" "$force"
 486 }
 487
 488
 489 dhcp_add() {
 490         local cfg="$1"
 491         local dhcp6range="::"
 492         local nettag
 493         local tags
 494
 495         config_get net "$cfg" interface
 496         [ -n "$net" ] || return 0
 497
 498         config_get networkid "$cfg" networkid
 499         [ -n "$networkid" ] || networkid="$net"
 500
 501         network_get_device ifname "$net" || return 0
 502
 503         [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
 504                 DNS_SERVERS="$DNS_SERVERS $dnsserver"
 505         }
 506
 507         append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && {
 508                 # Many ISP do not have useful names for DHCP customers (your WAN).
 509                 dhcp_this_host_add "$net" "$ifname" "$ADD_WAN_FQDN"
 510                 return 0
 511         }
 512
 513         network_get_subnet subnet "$net" || return 0
 514         network_get_protocol proto "$net" || return 0
 515
 516         # Do not support non-static interfaces for now
 517         [ static = "$proto" ] || return 0
 518
 519         # Override interface netmask with dhcp config if applicable
 520         config_get netmask "$cfg" netmask "${subnet##*/}"
 521
 522         #check for an already active dhcp server on the interface, unless 'force' is set
 523         config_get_bool force "$cfg" force 0
 524         [ $force -gt 0 ] || dhcp_check "$ifname" || {
 525                 logger -t dnsmasq \
 526                         "found already running DHCP-server on interface '$ifname'" \
 527                         "refusing to start, use 'option force 1' to override"
 528                 return 0
 529         }
 530
 531         config_get start "$cfg" start 100
 532         config_get limit "$cfg" limit 150
 533         config_get leasetime "$cfg" leasetime 12h
 534         config_get options "$cfg" options
 535         config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
 536
 537         config_get dhcpv4 "$cfg" dhcpv4
 538         config_get dhcpv6 "$cfg" dhcpv6
 539
 540         config_get ra "$cfg" ra
 541         config_get ra_management "$cfg" ra_management
 542         config_get ra_preference "$cfg" ra_preference
 543         config_get dns "$cfg" dns
 544
 545         config_list_foreach "$cfg" "interface_name" append_interface_name "$ifname"
 546
 547         # Put the router host name on this DHCP served interface address(es)
 548         dhcp_this_host_add "$net" "$ifname" "$ADD_LOCAL_FQDN"
 549
 550         start="$( dhcp_calc "$start" )"
 551
 552         add_tag() {
 553                 tags="${tags}tag:$1,"
 554         }
 555         config_list_foreach "$cfg" tag add_tag
 556
 557         nettag="${networkid:+set:${networkid},}"
 558
 559         if [ "$limit" -gt 0 ] ; then
 560                 limit=$((limit-1))
 561         fi
 562
 563         eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
 564
 565         if [ "$dynamicdhcp" = "0" ] ; then
 566                 END="static"
 567                 dhcp6range="::,static"
 568         else
 569                 dhcp6range="::1000,::ffff"
 570         fi
 571
 572
 573         if [ "$dhcpv4" != "disabled" ] ; then
 574                 xappend "--dhcp-range=$tags$nettag$START,$END,$NETMASK,$leasetime${options:+ $options}"
 575         fi
 576
 577
 578         if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ "$ra" = "server" ] ; then
 579                 # Note: dnsmasq cannot just be a DHCPv6 server (all-in-1)
 580                 # and let some other machine(s) send RA pointing to it.
 581
 582                 case $ra_preference in
 583                 *high*)
 584                         xappend "--ra-param=$ifname,high,0,7200"
 585                         ;;
 586                 *low*)
 587                         xappend "--ra-param=$ifname,low,0,7200"
 588                         ;;
 589                 *)
 590                         # Send UNSOLICITED RA at default interval and live for 2 hours.
 591                         # TODO: convert flexible lease time into route life time (only seconds).
 592                         xappend "--ra-param=$ifname,0,7200"
 593                         ;;
 594                 esac
 595
 596                 if [ "$dhcpv6" = "disabled" ] ; then
 597                         ra_management="3"
 598                 fi
 599
 600
 601                 case $ra_management in
 602                 0)
 603                         # SLACC with DCHP for extended options
 604                         xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-stateless,ra-names"
 605                         ;;
 606                 2)
 607                         # DHCP address and RA only for management redirection
 608                         xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,$leasetime"
 609                         ;;
 610                 3)
 611                         # SLAAC only but dnsmasq attempts to link HOSTNAME, DHCPv4 MAC, and SLAAC
 612                         xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-only,ra-names"
 613                         ;;
 614                 *)
 615                         # SLAAC and full DHCP
 616                         xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,slaac,ra-names,$leasetime"
 617                         ;;
 618                 esac
 619
 620                 if [ -n "$dns" ]; then
 621                         dnss=""
 622                         for d in $dns; do append dnss "[$d]" ","; done
 623                 else
 624                         dnss="[::]"
 625                 fi
 626
 627                 dhcp_option_append "option6:dns-server,$dnss" "$networkid"
 628         fi
 629
 630         dhcp_option_add "$cfg" "$networkid" 0
 631         dhcp_option_add "$cfg" "$networkid" 2
 632 }
 633
 634 dhcp_option_append() {
 635         local option="$1"
 636         local networkid="$2"
 637         local force="$3"
 638
 639         xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$option"
 640 }
 641
 642 dhcp_option_add() {
 643         # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
 644         local cfg="$1"
 645         local networkid="$2"
 646         local force="$3"
 647         local opt="dhcp_option"
 648
 649         [ "$force" = "0" ] && force=
 650         [ "$force" = "2" ] && opt="dhcp_option_force"
 651
 652         local list_len
 653         config_get list_len "$cfg" "${opt}_LENGTH"
 654
 655         if [ -n "$list_len" ]; then
 656                 config_list_foreach "$cfg" "$opt" dhcp_option_append "$networkid" "$force"
 657         else
 658                 config_get dhcp_option "$cfg" "$opt"
 659
 660                 [ -n "$dhcp_option" ] && echo "Warning: the 'option $opt' syntax is deprecated, use 'list $opt'" >&2
 661
 662                 local option
 663                 for option in $dhcp_option; do
 664                         dhcp_option_append "$option" "$networkid" "$force"
 665                 done
 666         fi
 667 }
 668
 669 dhcp_domain_add() {
 670         local cfg="$1"
 671         local ip name names record
 672
 673         config_get names "$cfg" name "$2"
 674         [ -n "$names" ] || return 0
 675
 676         config_get ip "$cfg" ip "$3"
 677         [ -n "$ip" ] || return 0
 678
 679         for name in $names; do
 680                 record="${record:+$record }$name"
 681         done
 682
 683         echo "$ip $record" >> $HOSTFILE_TMP
 684 }
 685
 686 dhcp_srv_add() {
 687         local cfg="$1"
 688
 689         config_get srv "$cfg" srv
 690         [ -n "$srv" ] || return 0
 691
 692         config_get target "$cfg" target
 693         [ -n "$target" ] || return 0
 694
 695         config_get port "$cfg" port
 696         [ -n "$port" ] || return 0
 697
 698         config_get class "$cfg" class
 699         config_get weight "$cfg" weight
 700
 701         local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
 702
 703         xappend "--srv-host=$service"
 704 }
 705
 706 dhcp_mx_add() {
 707         local cfg="$1"
 708         local domain relay pref
 709
 710         config_get domain "$cfg" domain
 711         [ -n "$domain" ] || return 0
 712
 713         config_get relay "$cfg" relay
 714         [ -n "$relay" ] || return 0
 715
 716         config_get pref "$cfg" pref 0
 717
 718         local service="$domain,$relay,$pref"
 719
 720         xappend "--mx-host=$service"
 721 }
 722
 723 dhcp_cname_add() {
 724         local cfg="$1"
 725         local cname target
 726
 727         config_get cname "$cfg" cname
 728         [ -n "$cname" ] || return 0
 729
 730         config_get target "$cfg" target
 731         [ -n "$target" ] || return 0
 732
 733         xappend "--cname=${cname},${target}"
 734 }
 735
 736 dhcp_hostrecord_add() {
 737         local cfg="$1"
 738         local names addresses record val
 739
 740         config_get names "$cfg" name "$2"
 741         if [ -z "$names" ]; then
 742                 return 0
 743         fi
 744
 745         config_get addresses "$cfg" ip "$3"
 746         if [ -z "$addresses" ]; then
 747                 return 0
 748         fi
 749
 750         for val in $names $addresses; do
 751                 record="${record:+$record,}$val"
 752         done
 753
 754         xappend "--host-record=$record"
 755 }
 756
 757 dhcp_relay_add() {
 758         local cfg="$1"
 759         local local_addr server_addr interface
 760
 761         config_get local_addr "$cfg" local_addr
 762         [ -n "$local_addr" ] || return 0
 763
 764         config_get server_addr "$cfg" server_addr
 765         [ -n "$server_addr" ] || return 0
 766
 767         config_get interface "$cfg" interface
 768         if [ -z "$interface" ]; then
 769                 xappend "--dhcp-relay=$local_addr,$server_addr"
 770         else
 771                 network_get_device ifname "$interface" || return
 772                 xappend "--dhcp-relay=$local_addr,$server_addr,$ifname"
 773         fi
 774 }
 775
 776 dnsmasq_ipset_add() {
 777         local cfg="$1"
 778         local ipsets domains
 779
 780         add_ipset() {
 781                 ipsets="${ipsets:+$ipsets,}$1"
 782         }
 783
 784         add_domain() {
 785                 # leading '/' is expected
 786                 domains="$domains/$1"
 787         }
 788
 789         config_list_foreach "$cfg" "name" add_ipset
 790         config_list_foreach "$cfg" "domain" add_domain
 791
 792         if [ -z "$ipsets" ] || [ -z "$domains" ]; then
 793                 return 0
 794         fi
 795
 796         xappend "--ipset=$domains/$ipsets"
 797 }
 798
 799 dnsmasq_start()
 800 {
 801         local cfg="$1"
 802         local disabled user_dhcpscript
 803         local resolvfile resolvdir localuse=0
 804
 805         config_get_bool disabled "$cfg" disabled 0
 806         [ "$disabled" -gt 0 ] && return 0
 807
 808         # reset list of DOMAINS and DNS servers (for each dnsmasq instance)
 809         DNS_SERVERS=""
 810         DOMAIN=""
 811         CONFIGFILE="${BASECONFIGFILE}.${cfg}"
 812         CONFIGFILE_TMP="${CONFIGFILE}.$$"
 813         HOSTFILE="${BASEHOSTFILE}.${cfg}"
 814         HOSTFILE_TMP="${HOSTFILE}.$$"
 815         BASEDHCPSTAMPFILE_CFG="${BASEDHCPSTAMPFILE}.${cfg}"
 816
 817         # before we can call xappend
 818         mkdir -p /var/run/dnsmasq/
 819         mkdir -p $(dirname $CONFIGFILE)
 820         mkdir -p $(dirname $HOSTFILE)
 821         mkdir -p /var/lib/misc
 822         chown dnsmasq:dnsmasq /var/run/dnsmasq
 823
 824         echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
 825         echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE_TMP
 826
 827         local dnsmasqconffile="/etc/dnsmasq.${cfg}.conf"
 828         if [ ! -r "$dnsmasqconffile" ]; then
 829                 dnsmasqconffile=/etc/dnsmasq.conf
 830         fi
 831
 832         # if we did this last, we could override auto-generated config
 833         [ -f "${dnsmasqconffile}" ] && {
 834                 xappend "--conf-file=${dnsmasqconffile}"
 835         }
 836
 837         $PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
 838
 839
 840         if [ -x /usr/sbin/odhcpd ] && [ -x /etc/init.d/odhcpd ] ; then
 841                 local odhcpd_is_main odhcpd_is_enabled
 842                 config_get odhcpd_is_main odhcpd maindhcp 0
 843                 /etc/init.d/odhcpd enabled && odhcpd_is_enabled=1 || odhcpd_is_enabled=0
 844
 845
 846                 if [ "$odhcpd_is_enabled" -eq 0 ] && [ "$DHCPv6CAPABLE" -eq 1 ] ; then
 847                         # DHCP V4 and V6 in DNSMASQ
 848                         DNSMASQ_DHCP_VER=6
 849                 elif [ "$odhcpd_is_main" -gt 0 ] ; then
 850                         # ODHCPD is doing it all
 851                         DNSMASQ_DHCP_VER=0
 852                 else
 853                         # You have ODHCPD but use DNSMASQ for DHCPV4
 854                         DNSMASQ_DHCP_VER=4
 855                 fi
 856
 857         elif [ "$DHCPv6CAPABLE" -eq 1 ] ; then
 858                 # DHCP V4 and V6 in DNSMASQ
 859                 DNSMASQ_DHCP_VER=6
 860         else
 861                 DNSMASQ_DHCP_VER=4
 862         fi
 863
 864         # Allow DHCP/DHCPv6 to be handled by ISC DHCPD
 865         if [ -x /usr/sbin/dhcpd ] ; then
 866                 if [ -x /etc/init.d/dhcpd ] ; then
 867                         /etc/init.d/dhcpd enabled && DNSMASQ_DHCP_VER=0
 868                 fi
 869                 if [ -x /etc/init.d/dhcpd6 ] && [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
 870                         /etc/init.d/dhcpd6 enabled && DNSMASQ_DHCP_VER=4
 871                 fi
 872         fi
 873
 874         append_bool "$cfg" authoritative "--dhcp-authoritative"
 875         append_bool "$cfg" nodaemon "--no-daemon"
 876         append_bool "$cfg" domainneeded "--domain-needed"
 877         append_bool "$cfg" filterwin2k "--filterwin2k"
 878         append_bool "$cfg" nohosts "--no-hosts"
 879         append_bool "$cfg" nonegcache "--no-negcache"
 880         append_bool "$cfg" strictorder "--strict-order"
 881         append_bool "$cfg" logqueries "--log-queries=extra"
 882         append_bool "$cfg" noresolv "--no-resolv"
 883         append_bool "$cfg" localise_queries "--localise-queries"
 884         append_bool "$cfg" readethers "--read-ethers"
 885         append_bool "$cfg" dbus "--enable-dbus"
 886         append_bool "$cfg" ubus "--enable-ubus" 1
 887         append_bool "$cfg" expandhosts "--expand-hosts"
 888         config_get tftp_root "$cfg" "tftp_root"
 889         [ -n "$tftp_root" ] && mkdir -p "$tftp_root" && append_bool "$cfg" enable_tftp "--enable-tftp"
 890         append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
 891         append_bool "$cfg" nonwildcard "--bind-dynamic" 1
 892         append_bool "$cfg" fqdn "--dhcp-fqdn"
 893         append_bool "$cfg" proxydnssec "--proxy-dnssec"
 894         append_bool "$cfg" localservice "--local-service"
 895         append_bool "$cfg" logdhcp "--log-dhcp"
 896         append_bool "$cfg" quietdhcp "--quiet-dhcp"
 897         append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
 898         append_bool "$cfg" allservers "--all-servers"
 899         append_bool "$cfg" noping "--no-ping"
 900         append_bool "$cfg" rapidcommit "--dhcp-rapid-commit"
 901         append_bool "$cfg" scriptarp "--script-arp"
 902
 903         append_parm "$cfg" logfacility "--log-facility"
 904
 905         append_parm "$cfg" cachesize "--cache-size"
 906         append_parm "$cfg" dnsforwardmax "--dns-forward-max"
 907         append_parm "$cfg" port "--port"
 908         append_parm "$cfg" ednspacket_max "--edns-packet-max"
 909         append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
 910         append_parm "$cfg" "queryport" "--query-port"
 911         append_parm "$cfg" "minport" "--min-port"
 912         append_parm "$cfg" "maxport" "--max-port"
 913         append_parm "$cfg" "domain" "--domain"
 914         append_parm "$cfg" "local" "--server"
 915         config_list_foreach "$cfg" "listen_address" append_listenaddress
 916         config_list_foreach "$cfg" "server" append_server
 917         config_list_foreach "$cfg" "rev_server" append_rev_server
 918         config_list_foreach "$cfg" "address" append_address
 919         config_list_foreach "$cfg" "ipset" append_ipset
 920
 921         local connmark_allowlist_enable
 922         config_get connmark_allowlist_enable "$cfg" connmark_allowlist_enable 0
 923         [ "$connmark_allowlist_enable" -gt 0 ] && {
 924                 append_parm "$cfg" "connmark_allowlist_enable" "--connmark-allowlist-enable"
 925                 config_list_foreach "$cfg" "connmark_allowlist" append_connmark_allowlist
 926         }
 927
 928         [ -n "$BOOT" ] || {
 929                 config_list_foreach "$cfg" "interface" append_interface
 930                 config_list_foreach "$cfg" "notinterface" append_notinterface
 931         }
 932         config_list_foreach "$cfg" "addnhosts" append_addnhosts
 933         config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
 934         append_parm "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
 935         append_parm "$cfg" "serversfile" "--servers-file"
 936         append_parm "$cfg" "tftp_root" "--tftp-root"
 937         append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
 938         append_parm "$cfg" "local_ttl" "--local-ttl"
 939         append_parm "$cfg" "max_ttl" "--max-ttl"
 940         append_parm "$cfg" "min_cache_ttl" "--min-cache-ttl"
 941         append_parm "$cfg" "max_cache_ttl" "--max-cache-ttl"
 942         append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
 943         append_parm "$cfg" "tftp_unique_root" "--tftp-unique-root"
 944         config_list_foreach "$cfg" "pxe_service" append_pxe_service
 945         config_get DOMAIN "$cfg" domain
 946
 947         config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
 948         config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
 949         config_get ADD_LOCAL_FQDN "$cfg" add_local_fqdn ""
 950         config_get ADD_WAN_FQDN "$cfg" add_wan_fqdn 0
 951
 952         if [ -z "$ADD_LOCAL_FQDN" ] ; then
 953                 # maintain support for previous UCI
 954                 ADD_LOCAL_FQDN="$ADD_LOCAL_HOSTNAME"
 955         fi
 956
 957         config_get user_dhcpscript $cfg dhcpscript
 958         if has_handler || [ -n "$user_dhcpscript" ]; then
 959                 xappend "--dhcp-script=$DHCPSCRIPT"
 960                 xappend "--script-arp"
 961         fi
 962
 963         config_get leasefile $cfg leasefile "/tmp/dhcp.leases"
 964         [ -n "$leasefile" ] && [ ! -e "$leasefile" ] && touch "$leasefile"
 965         config_get_bool cachelocal "$cfg" cachelocal 1
 966
 967         config_get_bool noresolv "$cfg" noresolv 0
 968         if [ "$noresolv" != "1" ]; then
 969                 config_get resolvfile "$cfg" resolvfile /tmp/resolv.conf.d/resolv.conf.auto
 970                 [ -n "$resolvfile" ] && [ ! -e "$resolvfile" ] && touch "$resolvfile"
 971                 xappend "--resolv-file=$resolvfile"
 972                 [ "$resolvfile" = "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=1
 973                 resolvdir="$(dirname "$resolvfile")"
 974         fi
 975         config_get_bool localuse "$cfg" localuse "$localuse"
 976
 977         config_get hostsfile "$cfg" dhcphostsfile
 978         [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
 979
 980         local rebind
 981         config_get_bool rebind "$cfg" rebind_protection 1
 982         [ $rebind -gt 0 ] && {
 983                 log_once \
 984                         "DNS rebinding protection is active," \
 985                         "will discard upstream RFC1918 responses!"
 986                 xappend "--stop-dns-rebind"
 987
 988                 local rebind_localhost
 989                 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
 990                 [ $rebind_localhost -gt 0 ] && {
 991                         log_once "Allowing 127.0.0.0/8 responses"
 992                         xappend "--rebind-localhost-ok"
 993                 }
 994
 995                 append_rebind_domain() {
 996                         log_once "Allowing RFC1918 responses for domain $1"
 997                         xappend "--rebind-domain-ok=$1"
 998                 }
 999
1000                 config_list_foreach "$cfg" rebind_domain append_rebind_domain
1001         }
1002
1003         config_get_bool dnssec "$cfg" dnssec 0
1004         [ "$dnssec" -gt 0 ] && {
1005                 xappend "--conf-file=$TRUSTANCHORSFILE"
1006                 xappend "--dnssec"
1007                 [ -x /etc/init.d/sysntpd ] && {
1008                         if /etc/init.d/sysntpd enabled || [ "$(uci_get system.ntp.enabled)" = "1" ] ; then
1009                                 [ -f "$TIMEVALIDFILE" ] || xappend "--dnssec-no-timecheck"
1010                         fi
1011                 }
1012                 config_get_bool dnsseccheckunsigned "$cfg" dnsseccheckunsigned 1
1013                 [ "$dnsseccheckunsigned" -eq 0 ] && xappend "--dnssec-check-unsigned=no"
1014         }
1015
1016         config_get addmac "$cfg" addmac 0
1017         [ "$addmac" != "0" ] && {
1018                 [ "$addmac" = "1" ] && addmac=
1019                 xappend "--add-mac${addmac:+="$addmac"}"
1020         }
1021
1022         dhcp_option_add "$cfg" "" 0
1023         dhcp_option_add "$cfg" "" 2
1024
1025         xappend "--dhcp-broadcast=tag:needs-broadcast"
1026
1027         config_get_bool ignore_hosts_dir "$cfg" ignore_hosts_dir 0
1028         if [ "$ignore_hosts_dir" = "1" ]; then
1029                 xappend "--addn-hosts=$HOSTFILE"
1030         else
1031                 xappend "--addn-hosts=$(dirname $HOSTFILE)"
1032         fi
1033
1034         config_get dnsmasqconfdir "$cfg" confdir "/tmp/dnsmasq.d"
1035         xappend "--conf-dir=$dnsmasqconfdir"
1036         dnsmasqconfdir="${dnsmasqconfdir%%,*}"
1037         [ ! -d "$dnsmasqconfdir" ] && mkdir -p $dnsmasqconfdir
1038         xappend "--user=dnsmasq"
1039         xappend "--group=dnsmasq"
1040         echo >> $CONFIGFILE_TMP
1041
1042         config_get_bool enable_tftp "$cfg" enable_tftp 0
1043         [ "$enable_tftp" -gt 0 ] && {
1044                 config_get tftp_root "$cfg" tftp_root
1045                 append EXTRA_MOUNT $tftp_root
1046         }
1047
1048         config_foreach filter_dnsmasq host dhcp_host_add "$cfg"
1049         echo >> $CONFIGFILE_TMP
1050
1051         config_get_bool dhcpbogushostname "$cfg" dhcpbogushostname 1
1052         [ "$dhcpbogushostname" -gt 0 ] && {
1053                 xappend "--dhcp-ignore-names=tag:dhcp_bogus_hostname"
1054                 [ -r "$DHCPBOGUSHOSTNAMEFILE" ] && xappend "--conf-file=$DHCPBOGUSHOSTNAMEFILE"
1055         }
1056
1057         config_foreach filter_dnsmasq boot dhcp_boot_add "$cfg"
1058         config_foreach filter_dnsmasq mac dhcp_mac_add "$cfg"
1059         config_foreach filter_dnsmasq tag dhcp_tag_add "$cfg"
1060         config_foreach filter_dnsmasq vendorclass dhcp_vendorclass_add "$cfg"
1061         config_foreach filter_dnsmasq userclass dhcp_userclass_add "$cfg"
1062         config_foreach filter_dnsmasq circuitid dhcp_circuitid_add "$cfg"
1063         config_foreach filter_dnsmasq remoteid dhcp_remoteid_add "$cfg"
1064         config_foreach filter_dnsmasq subscrid dhcp_subscrid_add "$cfg"
1065         config_foreach filter_dnsmasq match dhcp_match_add "$cfg"
1066         config_foreach filter_dnsmasq domain dhcp_domain_add "$cfg"
1067         config_foreach filter_dnsmasq hostrecord dhcp_hostrecord_add "$cfg"
1068         [ -n "$BOOT" ] || config_foreach filter_dnsmasq relay dhcp_relay_add "$cfg"
1069
1070         echo >> $CONFIGFILE_TMP
1071         config_foreach filter_dnsmasq srvhost dhcp_srv_add "$cfg"
1072         config_foreach filter_dnsmasq mxhost dhcp_mx_add "$cfg"
1073         echo >> $CONFIGFILE_TMP
1074
1075         config_get_bool boguspriv "$cfg" boguspriv 1
1076         [ "$boguspriv" -gt 0 ] && {
1077                 xappend "--bogus-priv"
1078                 [ -r "$RFC6761FILE" ] && xappend "--conf-file=$RFC6761FILE"
1079         }
1080
1081         if [ "$DNSMASQ_DHCP_VER" -gt 4 ] ; then
1082                 # Enable RA feature for when/if it is constructed,
1083                 # and RA is selected per interface pool (RA, DHCP, or both),
1084                 # but no one (should) want RA broadcast in syslog
1085                 [ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
1086                 xappend "--enable-ra"
1087                 xappend "--quiet-ra"
1088                 append_bool "$cfg" quietdhcp "--quiet-dhcp6"
1089
1090         elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
1091                 [ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
1092         fi
1093
1094
1095         echo >> $CONFIGFILE_TMP
1096         config_foreach filter_dnsmasq cname dhcp_cname_add "$cfg"
1097         echo >> $CONFIGFILE_TMP
1098
1099         echo >> $CONFIGFILE_TMP
1100         config_foreach filter_dnsmasq ipset dnsmasq_ipset_add "$cfg"
1101         echo >> $CONFIGFILE_TMP
1102
1103         echo >> $CONFIGFILE_TMP
1104         mv -f $CONFIGFILE_TMP $CONFIGFILE
1105         mv -f $HOSTFILE_TMP $HOSTFILE
1106
1107         [ "$localuse" -gt 0 ] && {
1108                 rm -f /tmp/resolv.conf
1109                 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
1110                         echo "search $DOMAIN" >> /tmp/resolv.conf
1111                 }
1112                 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
1113                 [ -e /proc/sys/net/ipv6 ] && DNS_SERVERS="$DNS_SERVERS ::1"
1114                 for DNS_SERVER in $DNS_SERVERS ; do
1115                         echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
1116                 done
1117         }
1118
1119         procd_open_instance $cfg
1120         procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq."${cfg}".pid
1121         procd_set_param file $CONFIGFILE
1122         [ -n "$user_dhcpscript" ] && procd_set_param env USER_DHCPSCRIPT="$user_dhcpscript"
1123         procd_set_param respawn
1124
1125         procd_add_jail dnsmasq ubus log
1126         procd_add_jail_mount $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE $RFC6761FILE $DHCPBOGUSHOSTNAMEFILE /etc/passwd /etc/group /etc/TZ /dev/null /dev/urandom $dnsmasqconffile $dnsmasqconfdir $resolvdir $user_dhcpscript /etc/hosts /etc/ethers /sbin/hotplug-call $EXTRA_MOUNT $DHCPSCRIPT
1127         procd_add_jail_mount_rw /var/run/dnsmasq/ $leasefile
1128
1129         procd_close_instance
1130 }
1131
1132 dnsmasq_stop()
1133 {
1134         local cfg="$1"
1135         local noresolv resolvfile localuse=0
1136
1137         config_get_bool noresolv "$cfg" noresolv 0
1138         config_get resolvfile "$cfg" "resolvfile"
1139
1140         [ "$noresolv" = 0 ] && [ "$resolvfile" = "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=1
1141         config_get_bool localuse "$cfg" localuse "$localuse"
1142         [ "$localuse" -gt 0 ] && ln -sf "/tmp/resolv.conf.d/resolv.conf.auto" /tmp/resolv.conf
1143
1144         rm -f ${BASEDHCPSTAMPFILE}.${cfg}.*.dhcp
1145 }
1146
1147 add_interface_trigger()
1148 {
1149         local interface ignore
1150
1151         config_get interface "$1" interface
1152         config_get_bool ignore "$1" ignore 0
1153
1154         [ -n "$interface" ] && [ $ignore -eq 0 ] && procd_add_interface_trigger "interface.*" "$interface" /etc/init.d/dnsmasq reload
1155 }
1156
1157 service_triggers()
1158 {
1159         procd_add_reload_trigger "dhcp" "system"
1160
1161         config_load dhcp
1162         config_foreach add_interface_trigger dhcp
1163         config_foreach add_interface_trigger relay
1164 }
1165
1166 boot()
1167 {
1168         BOOT=1
1169         start "$@"
1170 }
1171
1172 start_service() {
1173         local instance="$1"
1174         local instance_found=0
1175
1176         . /lib/functions/network.sh
1177
1178         config_cb() {
1179                 local type="$1"
1180                 local name="$2"
1181                 if [ "$type" = "dnsmasq" ]; then
1182                         if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
1183                                 instance_found=1
1184                         fi
1185                 fi
1186         }
1187
1188         config_load dhcp
1189
1190         if [ -n "$instance" ]; then
1191                 [ "$instance_found" -gt 0 ] || return
1192                 dnsmasq_start "$instance"
1193         else
1194                 config_foreach dnsmasq_start dnsmasq
1195         fi
1196 }
1197
1198 reload_service() {
1199         rc_procd start_service "$@"
1200         procd_send_signal dnsmasq "$@"
1201 }
1202
1203 stop_service() {
1204         local instance="$1"
1205         local instance_found=0
1206
1207         config_cb() {
1208                 local type="$1"
1209                 local name="$2"
1210                 if [ "$type" = "dnsmasq" ]; then
1211                         if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
1212                                 instance_found=1
1213                         fi
1214                 fi
1215         }
1216
1217         config_load dhcp
1218
1219         if [ -n "$instance" ]; then
1220                 [ "$instance_found" -gt 0 ] || return
1221                 dnsmasq_stop "$instance"
1222         else
1223                 config_foreach dnsmasq_stop dnsmasq
1224         fi
1225 }