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

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2007-2012 OpenWrt.org
   3
   4 . /lib/functions.sh
   5
   6 START=19
   7
   8 USE_PROCD=1
   9 PROG=/usr/sbin/dnsmasq
  10
  11 ADD_LOCAL_DOMAIN=1
  12 ADD_LOCAL_HOSTNAME=1
  13 ADD_WAN_FQDN=0
  14 ADD_LOCAL_FQDN=""
  15
  16 BASECONFIGFILE="/var/etc/dnsmasq.conf"
  17 BASEHOSTFILE="/tmp/hosts/dhcp"
  18 TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
  19 TIMEVALIDFILE="/var/state/dnsmasqsec"
  20 BASEDHCPSTAMPFILE="/var/run/dnsmasq"
  21 DHCPBOGUSHOSTNAMEFILE="/usr/share/dnsmasq/dhcpbogushostname.conf"
  22 RFC6761FILE="/usr/share/dnsmasq/rfc6761.conf"
  23 DHCPSCRIPT="/usr/lib/dnsmasq/dhcp-script.sh"
  24 DHCPSCRIPT_DEPENDS="/usr/share/libubox/jshn.sh /usr/bin/jshn /bin/ubus"
  25
  26 DNSMASQ_DHCP_VER=4
  27
  28 dnsmasq_ignore_opt() {
  29         local opt="$1"
  30
  31         if [ -z "$dnsmasq_features" ]; then
  32                 dnsmasq_features="$(dnsmasq --version | grep -m1 'Compile time options:' | cut -d: -f2) "
  33                 [ "${dnsmasq_features#* DHCP }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp=1
  34                 [ "${dnsmasq_features#* DHCPv6 }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp6=1
  35                 [ "${dnsmasq_features#* DNSSEC }" = "$dnsmasq_features" ] || dnsmasq_has_dnssec=1
  36                 [ "${dnsmasq_features#* TFTP }" = "$dnsmasq_features" ] || dnsmasq_has_tftp=1
  37                 [ "${dnsmasq_features#* ipset }" = "$dnsmasq_features" ] || dnsmasq_has_ipset=1
  38                 [ "${dnsmasq_features#* nftset }" = "$dnsmasq_features" ] || dnsmasq_has_nftset=1
  39         fi
  40
  41         case "$opt" in
  42                 dhcp-duid|\
  43                 ra-param)
  44                         [ -z "$dnsmasq_has_dhcp6" ] ;;
  45                 dhcp-*|\
  46                 bootp-*|\
  47                 pxe-*)
  48                         [ -z "$dnsmasq_has_dhcp" ] ;;
  49                 dnssec*|\
  50                 trust-anchor)
  51                         if [ -z "$dnsmasq_has_dnssec" ]; then
  52                                 echo "dnsmasq: \"$opt\" requested, but dnssec support is not available" >&2
  53                                 exit 1
  54                         fi
  55                         return 1
  56                         ;;
  57                 tftp-*)
  58                         [ -z "$dnsmasq_has_tftp" ] ;;
  59                 ipset)
  60                         [ -z "$dnsmasq_has_ipset" ] ;;
  61                 nftset)
  62                         [ -z "$dnsmasq_has_nftset" ] ;;
  63                 *)
  64                         return 1
  65         esac
  66 }
  67
  68 xappend() {
  69         local value="${1#--}"
  70         local opt="${value%%=*}"
  71
  72         if ! dnsmasq_ignore_opt "$opt"; then
  73                 echo "$value" >>$CONFIGFILE_TMP
  74         fi
  75 }
  76
  77 hex_to_hostid() {
  78         local var="$1"
  79         local hex="${2#0x}" # strip optional "0x" prefix
  80
  81         if [ -n "${hex//[0-9a-fA-F]/}" ]; then
  82                 # is invalid hex literal
  83                 return 1
  84         fi
  85
  86         # convert into host id
  87         export "$var=$(
  88                 printf "%0x:%0x" \
  89                 $(((0x$hex >> 16) % 65536)) \
  90                 $(( 0x$hex        % 65536))
  91                 )"
  92
  93         return 0
  94 }
  95
  96 dhcp_calc() {
  97         local ip="$1"
  98         local res=0
  99
 100         while [ -n "$ip" ]; do
 101                 part="${ip%%.*}"
 102                 res="$(($res * 256))"
 103                 res="$(($res + $part))"
 104                 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
 105         done
 106         echo "$res"
 107 }
 108
 109 dhcp_check() {
 110         local ifname="$1"
 111         local stamp="${BASEDHCPSTAMPFILE_CFG}.${ifname}.dhcp"
 112         local rv=0
 113
 114         [ -s "$stamp" ] && return $(cat "$stamp")
 115
 116         # If interface is down, skip it.
 117         # The init script will be called again once the link is up
 118         case "$(devstatus "$ifname" | jsonfilter -e @.up)" in
 119                 false) return 1;;
 120         esac
 121
 122         udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
 123
 124         echo $rv > "$stamp"
 125         return $rv
 126 }
 127
 128 log_once() {
 129         pidof dnsmasq >/dev/null || \
 130                 logger -t dnsmasq "$@"
 131 }
 132
 133 has_handler() {
 134         local file
 135
 136         for file in /etc/hotplug.d/dhcp/* /etc/hotplug.d/tftp/* /etc/hotplug.d/neigh/*; do
 137                 [ -f "$file" ] && return 0
 138         done
 139
 140         return 1
 141 }
 142
 143 append_bool() {
 144         local section="$1"
 145         local option="$2"
 146         local value="$3"
 147         local default="$4"
 148         local _loctmp
 149         [ -z "$default" ] && default="0"
 150         config_get_bool _loctmp "$section" "$option" "$default"
 151         [ $_loctmp -gt 0 ] && xappend "$value"
 152 }
 153
 154 append_parm() {
 155         local section="$1"
 156         local option="$2"
 157         local switch="$3"
 158         local default="$4"
 159         local _loctmp
 160         config_get _loctmp "$section" "$option" "$default"
 161         [ -z "$_loctmp" ] && return 0
 162         xappend "$switch=$_loctmp"
 163 }
 164
 165 append_server() {
 166         xappend "--server=$1"
 167 }
 168
 169 append_rev_server() {
 170         xappend "--rev-server=$1"
 171 }
 172
 173 append_address() {
 174         xappend "--address=$1"
 175 }
 176
 177 append_connmark_allowlist() {
 178         xappend "--connmark-allowlist=$1"
 179 }
 180
 181 append_interface() {
 182         network_get_device ifname "$1" || ifname="$1"
 183         xappend "--interface=$ifname"
 184 }
 185
 186 append_listenaddress() {
 187         xappend "--listen-address=$1"
 188 }
 189
 190 append_notinterface() {
 191         network_get_device ifname "$1" || ifname="$1"
 192         xappend "--except-interface=$ifname"
 193 }
 194
 195 ismounted() {
 196         local filename="$1"
 197         local dirname
 198         for dirname in $EXTRA_MOUNT ; do
 199                 case "$filename" in
 200                         "${dirname}/"* | "${dirname}" )
 201                                 return 0
 202                                 ;;
 203                 esac
 204         done
 205
 206         return 1
 207 }
 208
 209 append_extramount() {
 210         ismounted "$1" || append EXTRA_MOUNT "$1"
 211 }
 212
 213 append_addnhosts() {
 214         append_extramount "$1"
 215         xappend "--addn-hosts=$1"
 216 }
 217
 218 append_bogusnxdomain() {
 219         xappend "--bogus-nxdomain=$1"
 220 }
 221
 222 append_pxe_service() {
 223         xappend "--pxe-service=$1"
 224 }
 225
 226 append_interface_name() {
 227         xappend "--interface-name=$1,$2"
 228 }
 229
 230 filter_dnsmasq() {
 231         local cfg="$1" func="$2" match_cfg="$3" found_cfg
 232
 233         # use entry when no instance entry set, or if it matches
 234         config_get found_cfg "$cfg" "instance"
 235         if [ -z "$found_cfg" ] || [ "$found_cfg" = "$match_cfg" ]; then
 236                 $func $cfg
 237         fi
 238 }
 239
 240 dhcp_subscrid_add() {
 241         local cfg="$1"
 242
 243         config_get networkid "$cfg" networkid
 244         [ -n "$networkid" ] || return 0
 245
 246         config_get subscriberid "$cfg" subscriberid
 247         [ -n "$subscriberid" ] || return 0
 248
 249         xappend "--dhcp-subscrid=set:$networkid,$subscriberid"
 250
 251         config_get_bool force "$cfg" force 0
 252
 253         dhcp_option_add "$cfg" "$networkid" "$force"
 254 }
 255
 256 dhcp_remoteid_add() {
 257         local cfg="$1"
 258
 259         config_get networkid "$cfg" networkid
 260         [ -n "$networkid" ] || return 0
 261
 262         config_get remoteid "$cfg" remoteid
 263         [ -n "$remoteid" ] || return 0
 264
 265         xappend "--dhcp-remoteid=set:$networkid,$remoteid"
 266
 267         config_get_bool force "$cfg" force 0
 268
 269         dhcp_option_add "$cfg" "$networkid" "$force"
 270 }
 271
 272 dhcp_circuitid_add() {
 273         # TODO: DHCPV6 does not have circuitid; catch "option6:"
 274         local cfg="$1"
 275
 276         config_get networkid "$cfg" networkid
 277         [ -n "$networkid" ] || return 0
 278
 279         config_get circuitid "$cfg" circuitid
 280         [ -n "$circuitid" ] || return 0
 281
 282         xappend "--dhcp-circuitid=set:$networkid,$circuitid"
 283
 284         config_get_bool force "$cfg" force 0
 285
 286         dhcp_option_add "$cfg" "$networkid" "$force"
 287 }
 288
 289 dhcp_userclass_add() {
 290         local cfg="$1"
 291
 292         config_get networkid "$cfg" networkid
 293         [ -n "$networkid" ] || return 0
 294
 295         config_get userclass "$cfg" userclass
 296         [ -n "$userclass" ] || return 0
 297
 298         xappend "--dhcp-userclass=set:$networkid,$userclass"
 299
 300         config_get_bool force "$cfg" force 0
 301
 302         dhcp_option_add "$cfg" "$networkid" "$force"
 303 }
 304
 305 dhcp_vendorclass_add() {
 306         # TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
 307         local cfg="$1"
 308
 309         config_get networkid "$cfg" networkid
 310         [ -n "$networkid" ] || return 0
 311
 312         config_get vendorclass "$cfg" vendorclass
 313         [ -n "$vendorclass" ] || return 0
 314
 315         xappend "--dhcp-vendorclass=set:$networkid,$vendorclass"
 316
 317         config_get_bool force "$cfg" force 0
 318
 319         dhcp_option_add "$cfg" "$networkid" "$force"
 320 }
 321
 322 dhcp_match_add() {
 323         local cfg="$1"
 324
 325         config_get networkid "$cfg" networkid
 326         [ -n "$networkid" ] || return 0
 327
 328         config_get match "$cfg" match
 329         [ -n "$match" ] || return 0
 330
 331         xappend "--dhcp-match=set:$networkid,$match"
 332
 333         config_get_bool force "$cfg" force 0
 334
 335         dhcp_option_add "$cfg" "$networkid" "$force"
 336 }
 337
 338 dhcp_host_add() {
 339         local cfg="$1"
 340         local hosttag nametime addrs duids macs tags mtags
 341
 342         config_get_bool force "$cfg" force 0
 343
 344         config_get networkid "$cfg" networkid
 345         [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
 346
 347         config_get_bool enable "$cfg" enable 1
 348         [ "$enable" = "0" ] && return 0
 349
 350         config_get name "$cfg" name
 351         config_get ip "$cfg" ip
 352         config_get hostid "$cfg" hostid
 353
 354         [ -z "$ip" ] && [ -z "$name" ] && [ -z "$hostid" ] && return 0
 355
 356         config_get_bool dns "$cfg" dns 0
 357         [ "$dns" = "1" ] && [ -n "$ip" ] && [ -n "$name" ] && {
 358                 echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE_TMP
 359         }
 360
 361         config_get mac "$cfg" mac
 362         config_get duid "$cfg" duid
 363         config_get tag "$cfg" tag
 364
 365         add_tag() {
 366                 mtags="${mtags}tag:$1,"
 367         }
 368         config_list_foreach "$cfg" match_tag add_tag
 369
 370         if [ -n "$mac" ]; then
 371                 # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
 372                 # many MAC are possible to track a laptop ON/OFF dock
 373                 for m in $mac; do append macs "$m" ","; done
 374         fi
 375
 376         if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ -n "$duid" ]; then
 377                 # --dhcp-host=id:00:03:00:01:12:00:00:01:02:03,[::beef],lap
 378                 # one (virtual) machine gets one DUID per RFC3315
 379                 duids="id:${duid// */}"
 380         fi
 381
 382         if [ -z "$macs" ] && [ -z "$duids" ]; then
 383                 # --dhcp-host=lap,192.168.0.199,[::beef]
 384                 [ -n "$name" ] || return 0
 385                 macs="$name"
 386                 name=""
 387         fi
 388
 389         if [ -n "$hostid" ]; then
 390                 hex_to_hostid hostid "$hostid"
 391         fi
 392
 393         if [ -n "$tag" ]; then
 394                 for t in $tag; do append tags "$t" ",set:"; done
 395         fi
 396
 397         config_get_bool broadcast "$cfg" broadcast 0
 398         config_get leasetime "$cfg" leasetime
 399
 400         [ "$broadcast" = "0" ] && broadcast= || broadcast=",set:needs-broadcast"
 401
 402         hosttag="${networkid:+,set:${networkid}}${tags:+,set:${tags}}$broadcast"
 403         nametime="${name:+,$name}${leasetime:+,$leasetime}"
 404
 405         if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
 406                 addrs="${ip:+,$ip}${hostid:+,[::$hostid]}"
 407                 xappend "--dhcp-host=$mtags$macs${duids:+,$duids}$hosttag$addrs$nametime"
 408         else
 409                 xappend "--dhcp-host=$mtags$macs$hosttag${ip:+,$ip}$nametime"
 410         fi
 411 }
 412
 413 dhcp_this_host_add() {
 414         local net="$1"
 415         local ifname="$2"
 416         local mode="$3"
 417         local routerstub routername ifdashname
 418         local lanaddr lanaddr6 lanaddrs6 ulaprefix
 419
 420         if [ "$mode" -gt 0 ] ; then
 421                 ifdashname="${ifname//./-}"
 422                 routerstub="$( md5sum /etc/os-release )"
 423                 routerstub="router-${routerstub// */}"
 424                 routername="$( uci_get system @system[0] hostname $routerstub )"
 425
 426                 if [ "$mode" -gt 1 ] ; then
 427                         if [ "$mode" -gt 2 ] ; then
 428                                 if [ "$mode" -gt 3 ] ; then
 429                                         append_interface_name "$ifdashname.$routername.$DOMAIN" "$ifname"
 430                                 fi
 431
 432                                 append_interface_name "$routername.$DOMAIN" "$ifname"
 433                         fi
 434
 435                         # All IP addresses discovered by dnsmasq will be labeled (except fe80::)
 436                         append_interface_name "$routername" "$ifname"
 437
 438                 else
 439                         # This uses a static host file entry for only limited addresses.
 440                         # Use dnsmasq option "--expandhosts" to enable FQDN on host files.
 441                         ulaprefix="$(uci_get network @globals[0] ula_prefix)"
 442                         network_get_ipaddr lanaddr "$net"
 443                         network_get_ipaddrs6 lanaddrs6 "$net"
 444
 445                         if [ -n "$lanaddr" ] ; then
 446                                 dhcp_domain_add "" "$routername" "$lanaddr"
 447                         fi
 448
 449                         if [ -n "$ulaprefix" ] && [ -n "$lanaddrs6" ] ; then
 450                                 for lanaddr6 in $lanaddrs6 ; do
 451                                         case "$lanaddr6" in
 452                                         "${ulaprefix%%:/*}"*)
 453                                                 dhcp_domain_add "" "$routername" "$lanaddr6"
 454                                                 ;;
 455                                         esac
 456                                 done
 457                         fi
 458                 fi
 459         fi
 460 }
 461
 462 dhcp_tag_add() {
 463         # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
 464         local cfg="$1"
 465
 466         tag="$cfg"
 467
 468         [ -n "$tag" ] || return 0
 469
 470         config_get_bool force "$cfg" force 0
 471         [ "$force" = "0" ] && force=
 472
 473         config_get option "$cfg" dhcp_option
 474         for o in $option; do
 475                 xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
 476         done
 477 }
 478
 479 dhcp_mac_add() {
 480         local cfg="$1"
 481
 482         config_get networkid "$cfg" networkid
 483         [ -n "$networkid" ] || return 0
 484
 485         config_get mac "$cfg" mac
 486         [ -n "$mac" ] || return 0
 487
 488         xappend "--dhcp-mac=$networkid,$mac"
 489
 490         dhcp_option_add "$cfg" "$networkid"
 491 }
 492
 493 dhcp_boot_add() {
 494         # TODO: BOOTURL is different between DHCPv4 and DHCPv6
 495         local cfg="$1"
 496
 497         config_get networkid "$cfg" networkid
 498
 499         config_get filename "$cfg" filename
 500         [ -n "$filename" ] || return 0
 501
 502         config_get servername "$cfg" servername
 503         config_get serveraddress "$cfg" serveraddress
 504
 505         [ -n "$serveraddress" ] && [ ! -n "$servername" ] && return 0
 506
 507         xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
 508
 509         config_get_bool force "$cfg" force 0
 510
 511         dhcp_option_add "$cfg" "$networkid" "$force"
 512 }
 513
 514 dhcp_add() {
 515         local cfg="$1"
 516         local dhcp6range="::"
 517         local nettag
 518         local tags
 519
 520         config_get net "$cfg" interface
 521         [ -n "$net" ] || return 0
 522
 523         config_get networkid "$cfg" networkid
 524         [ -n "$networkid" ] || networkid="$net"
 525
 526         network_get_device ifname "$net" || return 0
 527
 528         [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
 529                 DNS_SERVERS="$DNS_SERVERS $dnsserver"
 530         }
 531
 532         append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && {
 533                 # Many ISP do not have useful names for DHCP customers (your WAN).
 534                 dhcp_this_host_add "$net" "$ifname" "$ADD_WAN_FQDN"
 535                 return 0
 536         }
 537
 538         network_get_subnet subnet "$net" || return 0
 539         network_get_protocol proto "$net" || return 0
 540
 541         # Do not support non-static interfaces for now
 542         [ static = "$proto" ] || return 0
 543
 544         # Override interface netmask with dhcp config if applicable
 545         config_get netmask "$cfg" netmask "${subnet##*/}"
 546
 547         #check for an already active dhcp server on the interface, unless 'force' is set
 548         config_get_bool force "$cfg" force 0
 549         [ $force -gt 0 ] || dhcp_check "$ifname" || {
 550                 logger -t dnsmasq \
 551                         "found already running DHCP-server on interface '$ifname'" \
 552                         "refusing to start, use 'option force 1' to override"
 553                 return 0
 554         }
 555
 556         config_get start "$cfg" start 100
 557         config_get limit "$cfg" limit 150
 558         config_get leasetime "$cfg" leasetime 12h
 559         config_get options "$cfg" options
 560         config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
 561         config_get_bool dynamicdhcpv4 "$cfg" dynamicdhcpv4 $dynamicdhcp
 562         config_get_bool dynamicdhcpv6 "$cfg" dynamicdhcpv6 $dynamicdhcp
 563
 564         config_get dhcpv4 "$cfg" dhcpv4
 565         config_get dhcpv6 "$cfg" dhcpv6
 566
 567         config_get ra "$cfg" ra
 568         config_get ra_management "$cfg" ra_management
 569         config_get ra_preference "$cfg" ra_preference
 570         config_get dns "$cfg" dns
 571         config_get dns_sl "$cfg" domain
 572
 573         config_list_foreach "$cfg" "interface_name" append_interface_name "$ifname"
 574
 575         # Put the router host name on this DHCP served interface address(es)
 576         dhcp_this_host_add "$net" "$ifname" "$ADD_LOCAL_FQDN"
 577
 578         start="$( dhcp_calc "$start" )"
 579
 580         add_tag() {
 581                 tags="${tags}tag:$1,"
 582         }
 583         config_list_foreach "$cfg" tag add_tag
 584
 585         nettag="${networkid:+set:${networkid},}"
 586
 587         # make sure the DHCP range is not empty
 588         if [ "$dhcpv4" != "disabled" ] && ipcalc "${subnet%%/*}" "$netmask" "$start" "$limit" ; then
 589                 [ "$dynamicdhcpv4" = "0" ] && END="static"
 590
 591                 xappend "--dhcp-range=$tags$nettag$START,$END,$NETMASK,$leasetime${options:+ $options}"
 592         fi
 593
 594         if [ "$dynamicdhcpv6" = "0" ] ; then
 595                 dhcp6range="::,static"
 596         else
 597                 dhcp6range="::1000,::ffff"
 598         fi
 599
 600
 601         if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ "$ra" = "server" ] ; then
 602                 # Note: dnsmasq cannot just be a DHCPv6 server (all-in-1)
 603                 # and let some other machine(s) send RA pointing to it.
 604
 605                 case $ra_preference in
 606                 *high*)
 607                         xappend "--ra-param=$ifname,high,0,7200"
 608                         ;;
 609                 *low*)
 610                         xappend "--ra-param=$ifname,low,0,7200"
 611                         ;;
 612                 *)
 613                         # Send UNSOLICITED RA at default interval and live for 2 hours.
 614                         # TODO: convert flexible lease time into route life time (only seconds).
 615                         xappend "--ra-param=$ifname,0,7200"
 616                         ;;
 617                 esac
 618
 619                 if [ "$dhcpv6" = "disabled" ] ; then
 620                         ra_management="3"
 621                 fi
 622
 623
 624                 case $ra_management in
 625                 0)
 626                         # SLACC with DCHP for extended options
 627                         xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-stateless,ra-names"
 628                         ;;
 629                 2)
 630                         # DHCP address and RA only for management redirection
 631                         xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,$leasetime"
 632                         ;;
 633                 3)
 634                         # SLAAC only but dnsmasq attempts to link HOSTNAME, DHCPv4 MAC, and SLAAC
 635                         xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-only,ra-names"
 636                         ;;
 637                 *)
 638                         # SLAAC and full DHCP
 639                         xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,slaac,ra-names,$leasetime"
 640                         ;;
 641                 esac
 642
 643                 if [ -n "$dns" ]; then
 644                         dnss=""
 645                         for d in $dns; do append dnss "[$d]" ","; done
 646                 else
 647                         dnss="[::]"
 648                 fi
 649
 650                 dhcp_option_append "option6:dns-server,$dnss" "$networkid"
 651
 652                 if [ -n "$dns_sl" ]; then
 653                         ddssl=""
 654                         for dd in $dns_sl; do append ddssl "$dd" ","; done
 655                 fi
 656
 657                 dhcp_option_append "option6:domain-search,$ddssl" "$networkid"
 658         fi
 659
 660         dhcp_option_add "$cfg" "$networkid" 0
 661         dhcp_option_add "$cfg" "$networkid" 2
 662 }
 663
 664 dhcp_option_append() {
 665         local option="$1"
 666         local networkid="$2"
 667         local force="$3"
 668
 669         xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$option"
 670 }
 671
 672 dhcp_option_add() {
 673         # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
 674         local cfg="$1"
 675         local networkid="$2"
 676         local force="$3"
 677         local opt="dhcp_option"
 678
 679         [ "$force" = "0" ] && force=
 680         [ "$force" = "2" ] && opt="dhcp_option_force"
 681
 682         local list_len
 683         config_get list_len "$cfg" "${opt}_LENGTH"
 684
 685         if [ -n "$list_len" ]; then
 686                 config_list_foreach "$cfg" "$opt" dhcp_option_append "$networkid" "$force"
 687         else
 688                 config_get dhcp_option "$cfg" "$opt"
 689
 690                 [ -n "$dhcp_option" ] && echo "Warning: the 'option $opt' syntax is deprecated, use 'list $opt'" >&2
 691
 692                 local option
 693                 for option in $dhcp_option; do
 694                         dhcp_option_append "$option" "$networkid" "$force"
 695                 done
 696         fi
 697 }
 698
 699 dhcp_domain_add() {
 700         local cfg="$1"
 701         local ip name names record
 702
 703         config_get names "$cfg" name "$2"
 704         [ -n "$names" ] || return 0
 705
 706         config_get ip "$cfg" ip "$3"
 707         [ -n "$ip" ] || return 0
 708
 709         for name in $names; do
 710                 record="${record:+$record }$name"
 711         done
 712
 713         echo "$ip $record" >> $HOSTFILE_TMP
 714 }
 715
 716 dhcp_srv_add() {
 717         local cfg="$1"
 718
 719         config_get srv "$cfg" srv
 720         [ -n "$srv" ] || return 0
 721
 722         config_get target "$cfg" target
 723         [ -n "$target" ] || return 0
 724
 725         config_get port "$cfg" port
 726         [ -n "$port" ] || return 0
 727
 728         config_get class "$cfg" class
 729         config_get weight "$cfg" weight
 730
 731         local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
 732
 733         xappend "--srv-host=$service"
 734 }
 735
 736 dhcp_mx_add() {
 737         local cfg="$1"
 738         local domain relay pref
 739
 740         config_get domain "$cfg" domain
 741         [ -n "$domain" ] || return 0
 742
 743         config_get relay "$cfg" relay
 744         [ -n "$relay" ] || return 0
 745
 746         config_get pref "$cfg" pref 0
 747
 748         local service="$domain,$relay,$pref"
 749
 750         xappend "--mx-host=$service"
 751 }
 752
 753 dhcp_cname_add() {
 754         local cfg="$1"
 755         local cname target
 756
 757         config_get cname "$cfg" cname
 758         [ -n "$cname" ] || return 0
 759
 760         config_get target "$cfg" target
 761         [ -n "$target" ] || return 0
 762
 763         xappend "--cname=${cname},${target}"
 764 }
 765
 766 dhcp_hostrecord_add() {
 767         local cfg="$1"
 768         local names addresses record val
 769
 770         config_get names "$cfg" name "$2"
 771         if [ -z "$names" ]; then
 772                 return 0
 773         fi
 774
 775         config_get addresses "$cfg" ip "$3"
 776         if [ -z "$addresses" ]; then
 777                 return 0
 778         fi
 779
 780         for val in $names $addresses; do
 781                 record="${record:+$record,}$val"
 782         done
 783
 784         xappend "--host-record=$record"
 785 }
 786
 787 dhcp_relay_add() {
 788         local cfg="$1"
 789         local local_addr server_addr interface
 790
 791         config_get local_addr "$cfg" local_addr
 792         [ -n "$local_addr" ] || return 0
 793
 794         config_get server_addr "$cfg" server_addr
 795         [ -n "$server_addr" ] || return 0
 796
 797         config_get interface "$cfg" interface
 798         if [ -z "$interface" ]; then
 799                 xappend "--dhcp-relay=$local_addr,$server_addr"
 800         else
 801                 network_get_device ifname "$interface" || return
 802                 xappend "--dhcp-relay=$local_addr,$server_addr,$ifname"
 803         fi
 804 }
 805
 806 dnsmasq_ipset_add() {
 807         local cfg="$1"
 808         local ipsets nftsets domains
 809
 810         add_ipset() {
 811                 ipsets="${ipsets:+$ipsets,}$1"
 812         }
 813
 814         add_nftset() {
 815                 local IFS=,
 816                 for set in $1; do
 817                         local fam="$family"
 818                         [ -n "$fam" ] || fam=$(echo "$set" | sed -nre \
 819                                 's#^.*[^0-9]([46])$|^.*[-_]([46])[-_].*$|^([46])[^0-9].*$#\1\2\3#p')
 820                         [ -n "$fam" ] || \
 821                                 fam=$(nft -t list set "$table_family" "$table" "$set" 2>&1 | sed -nre \
 822                                 's#^\t\ttype .*\bipv([46])_addr\b.*$#\1#p')
 823
 824                         [ -n "$fam" ] || \
 825                                 logger -t dnsmasq "Cannot infer address family from non-existent nftables set '$set'"
 826
 827                         nftsets="${nftsets:+$nftsets,}${fam:+$fam#}$table_family#$table#$set"
 828                 done
 829         }
 830
 831         add_domain() {
 832                 # leading '/' is expected
 833                 domains="$domains/$1"
 834         }
 835
 836         config_get table "$cfg" table 'fw4'
 837         config_get table_family "$cfg" table_family 'inet'
 838         if [ "$table_family" = "ip" ] ; then
 839                 family="4"
 840         elif [ "$table_family" = "ip6" ] ; then
 841                 family="6"
 842         else
 843                 config_get family "$cfg" family
 844         fi
 845
 846         config_list_foreach "$cfg" "name" add_ipset
 847         config_list_foreach "$cfg" "name" add_nftset
 848         config_list_foreach "$cfg" "domain" add_domain
 849
 850         if [ -z "$ipsets" ] || [ -z "$nftsets" ] || [ -z "$domains" ]; then
 851                 return 0
 852         fi
 853
 854         xappend "--ipset=$domains/$ipsets"
 855         xappend "--nftset=$domains/$nftsets"
 856 }
 857
 858 dnsmasq_start()
 859 {
 860         local cfg="$1"
 861         local disabled user_dhcpscript logfacility
 862         local resolvfile resolvdir localuse=0
 863
 864         config_get_bool disabled "$cfg" disabled 0
 865         [ "$disabled" -gt 0 ] && return 0
 866
 867         # reset list of DOMAINS, DNS servers and EXTRA mounts (for each dnsmasq instance)
 868         DNS_SERVERS=""
 869         DOMAIN=""
 870         EXTRA_MOUNT=""
 871         CONFIGFILE="${BASECONFIGFILE}.${cfg}"
 872         CONFIGFILE_TMP="${CONFIGFILE}.$$"
 873         HOSTFILE="${BASEHOSTFILE}.${cfg}"
 874         HOSTFILE_TMP="${HOSTFILE}.$$"
 875         HOSTFILE_DIR="$(dirname "$HOSTFILE")"
 876         BASEDHCPSTAMPFILE_CFG="${BASEDHCPSTAMPFILE}.${cfg}"
 877
 878         # before we can call xappend
 879         umask u=rwx,g=rx,o=rx
 880         mkdir -p /var/run/dnsmasq/
 881         mkdir -p $(dirname $CONFIGFILE)
 882         mkdir -p "$HOSTFILE_DIR"
 883         mkdir -p /var/lib/misc
 884         chown dnsmasq:dnsmasq /var/run/dnsmasq
 885
 886         echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
 887         echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE_TMP
 888
 889         local dnsmasqconffile="/etc/dnsmasq.${cfg}.conf"
 890         if [ ! -r "$dnsmasqconffile" ]; then
 891                 dnsmasqconffile=/etc/dnsmasq.conf
 892         fi
 893
 894         # if we did this last, we could override auto-generated config
 895         [ -f "${dnsmasqconffile}" ] && {
 896                 xappend "--conf-file=${dnsmasqconffile}"
 897         }
 898
 899         $PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
 900
 901
 902         if [ -x /usr/sbin/odhcpd ] && [ -x /etc/init.d/odhcpd ] ; then
 903                 local odhcpd_is_main odhcpd_is_enabled
 904                 config_get odhcpd_is_main odhcpd maindhcp 0
 905                 /etc/init.d/odhcpd enabled && odhcpd_is_enabled=1 || odhcpd_is_enabled=0
 906
 907
 908                 if [ "$odhcpd_is_enabled" -eq 0 ] && [ "$DHCPv6CAPABLE" -eq 1 ] ; then
 909                         # DHCP V4 and V6 in DNSMASQ
 910                         DNSMASQ_DHCP_VER=6
 911                 elif [ "$odhcpd_is_main" -gt 0 ] ; then
 912                         # ODHCPD is doing it all
 913                         DNSMASQ_DHCP_VER=0
 914                 else
 915                         # You have ODHCPD but use DNSMASQ for DHCPV4
 916                         DNSMASQ_DHCP_VER=4
 917                 fi
 918
 919         elif [ "$DHCPv6CAPABLE" -eq 1 ] ; then
 920                 # DHCP V4 and V6 in DNSMASQ
 921                 DNSMASQ_DHCP_VER=6
 922         else
 923                 DNSMASQ_DHCP_VER=4
 924         fi
 925
 926         # Allow DHCP/DHCPv6 to be handled by ISC DHCPD
 927         if [ -x /usr/sbin/dhcpd ] ; then
 928                 if [ -x /etc/init.d/dhcpd ] ; then
 929                         /etc/init.d/dhcpd enabled && DNSMASQ_DHCP_VER=0
 930                 fi
 931                 if [ -x /etc/init.d/dhcpd6 ] && [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
 932                         /etc/init.d/dhcpd6 enabled && DNSMASQ_DHCP_VER=4
 933                 fi
 934         fi
 935
 936         append_bool "$cfg" authoritative "--dhcp-authoritative"
 937         append_bool "$cfg" nodaemon "--no-daemon"
 938         append_bool "$cfg" domainneeded "--domain-needed"
 939         append_bool "$cfg" filterwin2k "--filterwin2k"
 940         append_bool "$cfg" nohosts "--no-hosts"
 941         append_bool "$cfg" nonegcache "--no-negcache"
 942         append_bool "$cfg" strictorder "--strict-order"
 943         append_bool "$cfg" logqueries "--log-queries=extra"
 944         append_bool "$cfg" noresolv "--no-resolv"
 945         append_bool "$cfg" localise_queries "--localise-queries"
 946         append_bool "$cfg" readethers "--read-ethers"
 947
 948         local instance_name="dnsmasq.$cfg"
 949         if [ "$cfg" = "$DEFAULT_INSTANCE" ]; then
 950                 instance_name="dnsmasq"
 951         fi
 952         config_get_bool dbus "$cfg" "dbus" 0
 953         [ $dbus -gt 0 ] && xappend "--enable-dbus=uk.org.thekelleys.$instance_name"
 954         config_get_bool ubus "$cfg" "ubus" 1
 955         [ $ubus -gt 0 ] && xappend "--enable-ubus=$instance_name"
 956
 957         append_bool "$cfg" expandhosts "--expand-hosts"
 958         config_get tftp_root "$cfg" "tftp_root"
 959         [ -n "$tftp_root" ] && mkdir -p "$tftp_root" && append_bool "$cfg" enable_tftp "--enable-tftp"
 960         append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
 961         append_bool "$cfg" nonwildcard "--bind-dynamic" 1
 962         append_bool "$cfg" fqdn "--dhcp-fqdn"
 963         append_bool "$cfg" proxydnssec "--proxy-dnssec"
 964         append_bool "$cfg" localservice "--local-service"
 965         append_bool "$cfg" logdhcp "--log-dhcp"
 966         append_bool "$cfg" quietdhcp "--quiet-dhcp"
 967         append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
 968         append_bool "$cfg" allservers "--all-servers"
 969         append_bool "$cfg" noping "--no-ping"
 970         append_bool "$cfg" rapidcommit "--dhcp-rapid-commit"
 971         append_bool "$cfg" scriptarp "--script-arp"
 972
 973         append_bool "$cfg" filter_aaaa "--filter-AAAA"
 974         append_bool "$cfg" filter_a "--filter-A"
 975
 976         append_parm "$cfg" logfacility "--log-facility"
 977         config_get logfacility "$cfg" "logfacility"
 978         append_parm "$cfg" cachesize "--cache-size"
 979         append_parm "$cfg" dnsforwardmax "--dns-forward-max"
 980         append_parm "$cfg" port "--port"
 981         append_parm "$cfg" ednspacket_max "--edns-packet-max"
 982         append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
 983         append_parm "$cfg" "queryport" "--query-port"
 984         append_parm "$cfg" "minport" "--min-port"
 985         append_parm "$cfg" "maxport" "--max-port"
 986         append_parm "$cfg" "domain" "--domain"
 987         append_parm "$cfg" "local" "--local"
 988         config_list_foreach "$cfg" "listen_address" append_listenaddress
 989         config_list_foreach "$cfg" "server" append_server
 990         config_list_foreach "$cfg" "rev_server" append_rev_server
 991         config_list_foreach "$cfg" "address" append_address
 992
 993         local connmark_allowlist_enable
 994         config_get connmark_allowlist_enable "$cfg" connmark_allowlist_enable 0
 995         [ "$connmark_allowlist_enable" -gt 0 ] && {
 996                 append_parm "$cfg" "connmark_allowlist_enable" "--connmark-allowlist-enable"
 997                 config_list_foreach "$cfg" "connmark_allowlist" append_connmark_allowlist
 998         }
 999
1000         [ -n "$BOOT" ] || {
1001                 config_list_foreach "$cfg" "interface" append_interface
1002                 config_list_foreach "$cfg" "notinterface" append_notinterface
1003         }
1004         config_get_bool ignore_hosts_dir "$cfg" ignore_hosts_dir 0
1005         if [ "$ignore_hosts_dir" = "1" ]; then
1006                 xappend "--addn-hosts=$HOSTFILE"
1007                 append EXTRA_MOUNT "$HOSTFILE"
1008         else
1009                 xappend "--addn-hosts=$HOSTFILE_DIR"
1010                 append EXTRA_MOUNT "$HOSTFILE_DIR"
1011         fi
1012         config_list_foreach "$cfg" "addnhosts" append_addnhosts
1013         config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
1014         append_parm "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
1015
1016         local serversfile
1017         config_get serversfile "$cfg" "serversfile"
1018         [ -n "$serversfile" ] && {
1019                 xappend "--servers-file=$serversfile"
1020                 append EXTRA_MOUNT "$serversfile"
1021         }
1022
1023         append_parm "$cfg" "tftp_root" "--tftp-root"
1024         append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
1025         append_parm "$cfg" "local_ttl" "--local-ttl"
1026         append_parm "$cfg" "max_ttl" "--max-ttl"
1027         append_parm "$cfg" "min_cache_ttl" "--min-cache-ttl"
1028         append_parm "$cfg" "max_cache_ttl" "--max-cache-ttl"
1029         append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
1030         append_parm "$cfg" "tftp_unique_root" "--tftp-unique-root"
1031         config_list_foreach "$cfg" "pxe_service" append_pxe_service
1032         config_get DOMAIN "$cfg" domain
1033
1034         config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
1035         config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
1036         config_get ADD_LOCAL_FQDN "$cfg" add_local_fqdn ""
1037         config_get ADD_WAN_FQDN "$cfg" add_wan_fqdn 0
1038
1039         if [ -z "$ADD_LOCAL_FQDN" ] ; then
1040                 # maintain support for previous UCI
1041                 ADD_LOCAL_FQDN="$ADD_LOCAL_HOSTNAME"
1042         fi
1043
1044         config_get user_dhcpscript $cfg dhcpscript
1045         if has_handler || [ -n "$user_dhcpscript" ]; then
1046                 xappend "--dhcp-script=$DHCPSCRIPT"
1047                 xappend "--script-arp"
1048         fi
1049
1050         config_get leasefile $cfg leasefile "/tmp/dhcp.leases"
1051         [ -n "$leasefile" ] && [ ! -e "$leasefile" ] && touch "$leasefile"
1052         config_get_bool cachelocal "$cfg" cachelocal 1
1053
1054         config_get_bool noresolv "$cfg" noresolv 0
1055         if [ "$noresolv" != "1" ]; then
1056                 config_get resolvfile "$cfg" resolvfile /tmp/resolv.conf.d/resolv.conf.auto
1057                 [ -n "$resolvfile" ] && [ ! -e "$resolvfile" ] && touch "$resolvfile"
1058                 xappend "--resolv-file=$resolvfile"
1059                 [ "$resolvfile" = "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=1
1060                 resolvdir="$(dirname "$resolvfile")"
1061         fi
1062         config_get_bool localuse "$cfg" localuse "$localuse"
1063
1064         config_get hostsfile "$cfg" dhcphostsfile
1065         [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
1066
1067         local rebind
1068         config_get_bool rebind "$cfg" rebind_protection 1
1069         [ $rebind -gt 0 ] && {
1070                 log_once \
1071                         "DNS rebinding protection is active," \
1072                         "will discard upstream RFC1918 responses!"
1073                 xappend "--stop-dns-rebind"
1074
1075                 local rebind_localhost
1076                 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
1077                 [ $rebind_localhost -gt 0 ] && {
1078                         log_once "Allowing 127.0.0.0/8 responses"
1079                         xappend "--rebind-localhost-ok"
1080                 }
1081
1082                 append_rebind_domain() {
1083                         log_once "Allowing RFC1918 responses for domain $1"
1084                         xappend "--rebind-domain-ok=$1"
1085                 }
1086
1087                 config_list_foreach "$cfg" rebind_domain append_rebind_domain
1088         }
1089
1090         config_get_bool dnssec "$cfg" dnssec 0
1091         [ "$dnssec" -gt 0 ] && {
1092                 xappend "--conf-file=$TRUSTANCHORSFILE"
1093                 xappend "--dnssec"
1094                 [ -x /etc/init.d/sysntpd ] && {
1095                         if /etc/init.d/sysntpd enabled || [ "$(uci_get system.ntp.enabled)" = "1" ] ; then
1096                                 [ -f "$TIMEVALIDFILE" ] || xappend "--dnssec-no-timecheck"
1097                         fi
1098                 }
1099                 config_get_bool dnsseccheckunsigned "$cfg" dnsseccheckunsigned 1
1100                 [ "$dnsseccheckunsigned" -eq 0 ] && xappend "--dnssec-check-unsigned=no"
1101         }
1102
1103         config_get addmac "$cfg" addmac 0
1104         [ "$addmac" != "0" ] && {
1105                 [ "$addmac" = "1" ] && addmac=
1106                 xappend "--add-mac${addmac:+="$addmac"}"
1107         }
1108
1109         dhcp_option_add "$cfg" "" 0
1110         dhcp_option_add "$cfg" "" 2
1111
1112         xappend "--dhcp-broadcast=tag:needs-broadcast"
1113
1114
1115         config_get dnsmasqconfdir "$cfg" confdir "/tmp/dnsmasq.d"
1116         xappend "--conf-dir=$dnsmasqconfdir"
1117         dnsmasqconfdir="${dnsmasqconfdir%%,*}"
1118         [ ! -d "$dnsmasqconfdir" ] && mkdir -p $dnsmasqconfdir
1119         xappend "--user=dnsmasq"
1120         xappend "--group=dnsmasq"
1121         echo >> $CONFIGFILE_TMP
1122
1123         config_get_bool enable_tftp "$cfg" enable_tftp 0
1124         [ "$enable_tftp" -gt 0 ] && {
1125                 config_get tftp_root "$cfg" tftp_root
1126                 append EXTRA_MOUNT $tftp_root
1127         }
1128
1129         config_foreach filter_dnsmasq host dhcp_host_add "$cfg"
1130         echo >> $CONFIGFILE_TMP
1131
1132         config_get_bool dhcpbogushostname "$cfg" dhcpbogushostname 1
1133         [ "$dhcpbogushostname" -gt 0 ] && {
1134                 xappend "--dhcp-ignore-names=tag:dhcp_bogus_hostname"
1135                 [ -r "$DHCPBOGUSHOSTNAMEFILE" ] && xappend "--conf-file=$DHCPBOGUSHOSTNAMEFILE"
1136         }
1137
1138         config_foreach filter_dnsmasq boot dhcp_boot_add "$cfg"
1139         config_foreach filter_dnsmasq mac dhcp_mac_add "$cfg"
1140         config_foreach filter_dnsmasq tag dhcp_tag_add "$cfg"
1141         config_foreach filter_dnsmasq vendorclass dhcp_vendorclass_add "$cfg"
1142         config_foreach filter_dnsmasq userclass dhcp_userclass_add "$cfg"
1143         config_foreach filter_dnsmasq circuitid dhcp_circuitid_add "$cfg"
1144         config_foreach filter_dnsmasq remoteid dhcp_remoteid_add "$cfg"
1145         config_foreach filter_dnsmasq subscrid dhcp_subscrid_add "$cfg"
1146         config_foreach filter_dnsmasq match dhcp_match_add "$cfg"
1147         config_foreach filter_dnsmasq domain dhcp_domain_add "$cfg"
1148         config_foreach filter_dnsmasq hostrecord dhcp_hostrecord_add "$cfg"
1149         [ -n "$BOOT" ] || config_foreach filter_dnsmasq relay dhcp_relay_add "$cfg"
1150
1151         echo >> $CONFIGFILE_TMP
1152         config_foreach filter_dnsmasq srvhost dhcp_srv_add "$cfg"
1153         config_foreach filter_dnsmasq mxhost dhcp_mx_add "$cfg"
1154         echo >> $CONFIGFILE_TMP
1155
1156         config_get_bool boguspriv "$cfg" boguspriv 1
1157         [ "$boguspriv" -gt 0 ] && {
1158                 xappend "--bogus-priv"
1159                 [ -r "$RFC6761FILE" ] && xappend "--conf-file=$RFC6761FILE"
1160         }
1161
1162         if [ "$DNSMASQ_DHCP_VER" -gt 4 ] ; then
1163                 # Enable RA feature for when/if it is constructed,
1164                 # and RA is selected per interface pool (RA, DHCP, or both),
1165                 # but no one (should) want RA broadcast in syslog
1166                 [ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
1167                 xappend "--enable-ra"
1168                 xappend "--quiet-ra"
1169                 append_bool "$cfg" quietdhcp "--quiet-dhcp6"
1170
1171         elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
1172                 [ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
1173         fi
1174
1175
1176         echo >> $CONFIGFILE_TMP
1177         config_foreach filter_dnsmasq cname dhcp_cname_add "$cfg"
1178         echo >> $CONFIGFILE_TMP
1179
1180         echo >> $CONFIGFILE_TMP
1181         config_foreach filter_dnsmasq ipset dnsmasq_ipset_add "$cfg"
1182         echo >> $CONFIGFILE_TMP
1183
1184         mv -f $CONFIGFILE_TMP $CONFIGFILE
1185         mv -f $HOSTFILE_TMP $HOSTFILE
1186
1187         [ "$localuse" -gt 0 ] && {
1188                 rm -f /tmp/resolv.conf
1189                 [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
1190                         echo "search $DOMAIN" >> /tmp/resolv.conf
1191                 }
1192                 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
1193                 [ -e /proc/sys/net/ipv6 ] && DNS_SERVERS="$DNS_SERVERS ::1"
1194                 for DNS_SERVER in $DNS_SERVERS ; do
1195                         echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
1196                 done
1197         }
1198
1199         config_list_foreach "$cfg" addnmount append_extramount
1200
1201         procd_open_instance $cfg
1202         procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq."${cfg}".pid
1203         procd_set_param file $CONFIGFILE
1204         [ -n "$user_dhcpscript" ] && procd_set_param env USER_DHCPSCRIPT="$user_dhcpscript"
1205         procd_set_param respawn
1206
1207         local instance_ifc instance_netdev
1208         config_get instance_ifc "$cfg" interface
1209         [ -n "$instance_ifc" ] && network_get_device instance_netdev "$instance_ifc" &&
1210                 [ -n "$instance_netdev" ] && procd_set_param netdev $instance_netdev
1211
1212         procd_add_jail dnsmasq ubus log
1213         procd_add_jail_mount $CONFIGFILE $DHCPBOGUSHOSTNAMEFILE $DHCPSCRIPT $DHCPSCRIPT_DEPENDS
1214         procd_add_jail_mount $EXTRA_MOUNT $RFC6761FILE $TRUSTANCHORSFILE
1215         procd_add_jail_mount $dnsmasqconffile $dnsmasqconfdir $resolvdir $user_dhcpscript
1216         procd_add_jail_mount /etc/passwd /etc/group /etc/TZ /etc/hosts /etc/ethers
1217         procd_add_jail_mount_rw /var/run/dnsmasq/ $leasefile
1218         case "$logfacility" in */*)
1219                 [ ! -e "$logfacility" ] && touch "$logfacility"
1220                 procd_add_jail_mount_rw "$logfacility"
1221         esac
1222         [ -e "$hostsfile" ] && procd_add_jail_mount $hostsfile
1223
1224         procd_close_instance
1225 }
1226
1227 dnsmasq_stop()
1228 {
1229         local cfg="$1"
1230         local noresolv resolvfile localuse=0
1231
1232         config_get_bool noresolv "$cfg" noresolv 0
1233         config_get resolvfile "$cfg" "resolvfile"
1234
1235         [ "$noresolv" = 0 ] && [ "$resolvfile" = "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=1
1236         config_get_bool localuse "$cfg" localuse "$localuse"
1237         [ "$localuse" -gt 0 ] && ln -sf "/tmp/resolv.conf.d/resolv.conf.auto" /tmp/resolv.conf
1238
1239         rm -f ${BASEDHCPSTAMPFILE}.${cfg}.*.dhcp
1240 }
1241
1242 add_interface_trigger()
1243 {
1244         local interface ignore
1245
1246         config_get interface "$1" interface
1247         config_get_bool ignore "$1" ignore 0
1248
1249         [ -n "$interface" ] && [ $ignore -eq 0 ] && procd_add_interface_trigger "interface.*" "$interface" /etc/init.d/dnsmasq reload
1250 }
1251
1252 service_triggers()
1253 {
1254         procd_add_reload_trigger "dhcp" "system"
1255
1256         config_load dhcp
1257         config_foreach add_interface_trigger dhcp
1258         config_foreach add_interface_trigger relay
1259 }
1260
1261 boot()
1262 {
1263         BOOT=1
1264         start "$@"
1265 }
1266
1267 start_service() {
1268         local instance="$1"
1269         local instance_found=0
1270         local first_instance=""
1271
1272         . /lib/functions/network.sh
1273
1274         config_cb() {
1275                 local type="$1"
1276                 local name="$2"
1277                 if [ "$type" = "dnsmasq" ]; then
1278                         if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
1279                                 instance_found=1
1280                         fi
1281                         if [ -z "$DEFAULT_INSTANCE" ]; then
1282                                 local disabled
1283                                 config_get_bool disabled "$name" disabled 0
1284                                 if [ "$disabled" -eq 0 ]; then
1285                                         # First enabled section will be assigned default instance name.
1286                                         # Unnamed sections get precedence over named sections.
1287                                         if expr "$cfg" : 'cfg[0-9a-f]*$' >/dev/null = "9"; then # See uci_fixup_section.
1288                                                 DEFAULT_INSTANCE="$name" # Unnamed config section.
1289                                         elif [ -z "$first_instance" ]; then
1290                                                 first_instance="$name"
1291                                         fi
1292                                 fi
1293                         fi
1294                 fi
1295         }
1296
1297         DEFAULT_INSTANCE=""
1298         config_load dhcp
1299         if [ -z "$DEFAULT_INSTANCE" ]; then
1300                 DEFAULT_INSTANCE="$first_instance" # No unnamed config section was found.
1301         fi
1302
1303         if [ -n "$instance" ]; then
1304                 [ "$instance_found" -gt 0 ] || return
1305                 dnsmasq_start "$instance"
1306         else
1307                 config_foreach dnsmasq_start dnsmasq
1308         fi
1309 }
1310
1311 reload_service() {
1312         rc_procd start_service "$@"
1313         procd_send_signal dnsmasq "$@"
1314 }
1315
1316 stop_service() {
1317         local instance="$1"
1318         local instance_found=0
1319
1320         config_cb() {
1321                 local type="$1"
1322                 local name="$2"
1323                 if [ "$type" = "dnsmasq" ]; then
1324                         if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
1325                                 instance_found=1
1326                         fi
1327                 fi
1328         }
1329
1330         config_load dhcp
1331
1332         if [ -n "$instance" ]; then
1333                 [ "$instance_found" -gt 0 ] || return
1334                 dnsmasq_stop "$instance"
1335         else
1336                 config_foreach dnsmasq_stop dnsmasq
1337         fi
1338 }