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

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