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