iankelling.org Git - automated-distro-installer/blob - wrt-setup-local

   1 #!/bin/bash
   2 # Copyright (C) 2016 Ian Kelling
   3
   4 # This program is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU General Public License
   6 # as published by the Free Software Foundation; either version 2
   7 # of the License, or (at your option) any later version.
   8
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17
  18
  19 set -eE -o pipefail
  20 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
  21
  22
  23 usage() {
  24   cat <<EOF
  25 usage: ${0##*/} [-h] [-t 2|3|test|client] [-m WIRELESS_MAC]
  26 setup my router in general: dhcp, dns, etc.
  27
  28 Type 2 or 3 is for setting up a backup device, there are two kinds so
  29 that you can switch the main device to a backup, then a backup to the
  30 main. Type test is for setting up a testing device.
  31
  32 Passing an empty string for WIRELESS_MAC, or if none is defined in the
  33 secrets file, will cause the device's native mac to be used.
  34
  35 EOF
  36
  37   exit $1
  38 }
  39
  40
  41
  42
  43
  44 secrets=false
  45 if [[ -e /root/router-secrets ]]; then
  46   secrets=true
  47   source /root/router-secrets
  48 fi
  49 rmac=$(cat /sys/class/net/eth0/address)
  50 if $secrets; then
  51   hostname=${rhost[$rmac]}
  52 fi
  53 : ${hostname:=wrt}
  54
  55
  56 dnsmasq_restart=false
  57 firewall_restart=false
  58 dev2=false
  59 test=false
  60 client=false
  61 libremanage_host=wrt2
  62 lanip=1
  63 while getopts hm:t: opt; do
  64   case $opt in
  65     h) usage ;;
  66     t)
  67       case $2 in
  68         2|3)
  69           dev2=true
  70           libremanage_host=$hostname
  71           ;;&
  72         2)
  73           lanip=4
  74           hostname=wrt2
  75           ;;
  76         3)
  77           lanip=14
  78           hostname=wrt3
  79           ;;
  80         test)
  81           test=true
  82           ;;
  83         client)
  84           client=true
  85           ;;
  86         *) echo "$0: unexpected arg to -t: $*" >&2; usage 1 ;;
  87       esac
  88       ;;
  89     m)  mac=$OPTARG ;;
  90     *) echo "$0: Internal error! unexpected args: $*" >&2 ; usage 1 ;;
  91   esac
  92 done
  93 shift "$((OPTIND-1))"   # Discard the options and sentinel --
  94
  95 if [[ ! $mac ]] && ! $test && $secrets; then
  96   # if we wanted to increment it
  97   #mac=${mac:0: -1}$((${mac: -1} + 2))
  98   mac=${rwmac[$rmac]}
  99 fi
 100
 101 if (( $# != 0 )); then
 102   usage 1
 103 fi
 104
 105
 106 macpre=${mac:0: -1}
 107 macsuf=${mac: -1}
 108
 109
 110 p_updated=false
 111 pmirror() {
 112   if $p_updated; then
 113     return
 114   fi
 115   # background: upgrading all packages is not recommended because it
 116   # doesn't go into the firmware. build new firmware if you want
 117   # lots of upgrades. I think /tmp/opkg-lists is a pre openwrt 14 location.
 118   f=(/var/opkg-lists/*)
 119   if ! (( $(date -r $f +%s) + 60*60*24 > $(date +%s) )); then
 120     if ! opkg update; then
 121       echo "$0: warning: opkg update failed" >&2
 122     fi
 123     p_updated=true
 124   fi
 125 }
 126
 127 pi() {
 128   to_install=()
 129   for p in "$@"; do
 130     pname=${p##*/}
 131     pname=${pname%%_*}
 132     if [[ ! $(opkg list-installed "$pname") ]]; then
 133       to_install+=($p)
 134       pmirror
 135     fi
 136   done
 137   if [[ $to_install ]]; then
 138     opkg install ${to_install[@]}
 139   fi
 140 }
 141
 142 v() {
 143   printf "+ %s\n" "$*"
 144   "$@"
 145 }
 146
 147 ######### uci example:#######
 148 # # https://wiki.openwrt.org/doc/uci
 149 # wan_index=$(uci show firewall | sed -rn 's/firewall\.@zone\[([0-9])+\]\.name=wan/\1/p')
 150 # wan="firewall.@zone[$wan_index]"
 151 # if [[ $(uci get firewall.@forwarding[0].dest) != $forward_dest ]]; then
 152 #     # default is wan
 153 #     v uci set firewall.@forwarding[0].dest=$forward_dest
 154 #     uci commit firewall
 155 #     firewall_restart=true
 156 # fi
 157 ####### end uci example #####
 158
 159 uset() {
 160   printf "+ uset %s\n" "$*"
 161   local key="$1"
 162   local val="$2"
 163   local service="${key%%.*}"
 164   restart_var=${service}_restart
 165   if [[ ! ${!restart_var} ]]; then
 166     eval $restart_var=false
 167   fi
 168   if [[ $(uci get "$key") != "$val" ]]; then
 169     v uci set "$key"="$val"
 170     uci commit $service
 171     eval $restart_var=true
 172   fi
 173 }
 174
 175 udel() {
 176   printf "+ udel %s\n" "$*"
 177   local key="$1"
 178   local val="$2"
 179   local service="${key%%.*}"
 180   restart_var=${service}_restart
 181   if [[ ! ${!restart_var} ]]; then
 182     eval $restart_var=false
 183   fi
 184   if uci get "$key" &>/dev/null; then
 185     v uci set "$key"="$val"
 186     uci commit $service
 187     eval $restart_var=true
 188   fi
 189 }
 190
 191
 192
 193 ### network config
 194 ###
 195 lan=10.0.0.0
 196 if $test; then
 197   lan=10.1.0.0
 198 elif [[ $hostname == cmc ]]; then
 199   lan=10.2.0.0
 200 elif $client; then
 201   lan=10.3.0.0
 202 fi
 203
 204 if $test; then
 205   ssid="gnuv3"
 206 elif $secrets; then
 207   ssid=${rssid[$rmac]}
 208 fi
 209
 210 : ${ssid:=librecmc}
 211
 212
 213 if $secrets; then
 214   key=${rkey[$rmac]}
 215 fi
 216 : ${key:=pictionary49}
 217
 218 mask=255.255.0.0
 219 cidr=16
 220 l=${lan%.0}
 221
 222 passwd -l root ||: #already locked fails
 223
 224 sed -ibak '/^root:/d' /etc/shadow
 225 # /root/router created by manually running passwd then copying the resulting
 226 # line. We have no mkpasswd on wrt/librecmc, then we scp it in.
 227 cat /root/router >>/etc/shadow
 228 # otherwise, serial console gets root login with no password
 229 uset system.@system[0].ttylogin 1
 230
 231
 232
 233 cat >/usr/bin/archlike-pxe-mount <<'EOFOUTER'
 234 #!/bin/bash
 235 # symlinks are collapsed for nfs mount points, so use a bind mount.
 236 # tried putting this in /etc/config/fstab,
 237 # then doing block mount, it didn't work. This doesn't persist across reboots,
 238 # todo: figure that out
 239 rm -f /etc/fstab
 240 for d in /run/{arch,parabola}iso/bootmnt; do
 241 cat >>/etc/fstab <<EOF
 242 /mnt/usb/tftpboot $d none bind 0 0
 243 EOF
 244 mount | grep $d &>/dev/null || mount $d
 245 done
 246 /etc/init.d/nfsd restart
 247 EOFOUTER
 248 chmod +x /usr/bin/archlike-pxe-mount
 249
 250 sed -i '/^root:/s,/bin/ash$,/bin/bash,' /etc/passwd
 251
 252
 253
 254 uset dropbear.@dropbear[0].PasswordAuth 0
 255 uset dropbear.@dropbear[0].RootPasswordAuth 0
 256 uset dropbear.@dropbear[0].Port 2220
 257 if ! cmp -s /root/dropbear_rsa_host_key /etc/dropbear/dropbear_rsa_host_key; then
 258   cp /root/dropbear_rsa_host_key /etc/dropbear/dropbear_rsa_host_key
 259   dropbear_restart=true
 260 fi
 261
 262 if $dropbear_restart; then
 263   v /etc/init.d/dropbear restart
 264 fi
 265
 266
 267 uset network.lan.ipaddr $l.$lanip
 268 uset network.lan.netmask $mask
 269 if $dev2  || $client; then
 270   if $dev2; then
 271     uset network.lan.gateway $l.1
 272     uset network.wan.proto none
 273     uset network.wan6.proto none
 274   fi
 275   /etc/init.d/dnsmasq stop
 276   /etc/init.d/dnsmasq disable
 277   /etc/init.d/odhcpd stop
 278   /etc/init.d/odhcpd disable
 279   rm -f /etc/resolv.conf
 280   cat >/etc/resolv.conf <<'EOF'
 281 nameserver 8.8.8.8
 282 nameserver 8.8.4.4
 283 EOF
 284
 285   # things i tried to keep dnsmasq running but not enabled except local dns,
 286   # but it didnt work right and i dont need it anyways.
 287   # uset dhcp.wan.ignore $dev2 # default is false
 288   # uset dhcp.lan.ignore $dev2 # default is false
 289   # uset dhcp.@dnsmasq[0].interface lo
 290   # uset dhcp.@dnsmasq[0].localuse 0
 291   # uset dhcp.@dnsmasq[0].resolvfile /etc/dnsmasq.conf
 292   # uset dhcp.@dnsmasq[0].noresolv 1
 293   # todo: populate /etc/resolv.conf with a static value
 294
 295 else
 296   # these are the defaults
 297   uset network.lan.gateway ''
 298   uset network.wan.proto dhcp
 299   uset network.wan6.proto dhcpv6
 300   /etc/init.d/dnsmasq start
 301   # todo: figure out why this returns 1
 302   /etc/init.d/dnsmasq enable ||:
 303   /etc/init.d/odhcpd start
 304   /etc/init.d/odhcpd enable
 305 fi
 306
 307 wireless_restart=false
 308
 309 if $client; then
 310   uset wireless.default_radio0.network 'wwan'
 311   uset wireless.default_radio0.ssid ${rclientssid[$rmac]}
 312   uset wireless.default_radio0.encryption 'psk2'
 313   uset wireless.default_radio0.device 'radio0'
 314   uset wireless.default_radio0.mode 'sta'
 315   uset wireless.default_radio0.bssid ${rclientbssid[$rmac]}
 316   # todo: look into whether 5g network is available.
 317   uset wireless.default_radio0.key ${rclientkey[$rmac]}
 318   uset wireless.radio0.disabled false
 319   uset wireless.radio1.disabled true
 320 else
 321   # defaults, just reseting in case client config ran
 322   uset wireless.default_radio0.network lan
 323   uset wireless.default_radio0.mode ap
 324   for x in 0 1; do
 325     uset wireless.default_radio$x.ssid "$ssid"
 326     uset wireless.default_radio$x.key $key
 327     uset wireless.default_radio$x.encryption psk2
 328     if [[ $mac ]]; then
 329       uset wireless.default_radio$x.macaddr $macpre$((macsuf + 2*x))
 330     fi
 331     # secondary device has wireless disabled
 332     uset wireless.radio$x.disabled $dev2
 333   done
 334 fi
 335
 336
 337
 338
 339
 340 # usb, screen, relay are for libremanage
 341 # rsync is for brc
 342 #
 343 # relay package temporarily disabled
 344 # /root/relay_1.0-1_mips_24kc.ipk
 345 v pi kmod-usb-storage block-mount kmod-fs-ext4 nfs-kernel-server \
 346   tcpdump openvpn-openssl adblock libusb-compat \
 347   screen kmod-usb-serial-cp210x kmod-usb-serial-ftdi rsync
 348
 349 cat >/etc/libremanage.conf <<EOF
 350 ${libremanage_host}_type=switch
 351 ${libremanage_host}_channel=1
 352 EOF
 353
 354
 355
 356 v /etc/init.d/fstab enable ||:
 357
 358 # rebooting makes mounting work, but comparing lsmod,
 359 # i'm guessing this will too. todo, test it.
 360 # 255 == module already loaded
 361 for mod in scsi_mod sd_mod; do v modprobe $mod || [[ $? == 255 ]]; done
 362
 363 # for archlike pxe. The default settings in the installer expect to find
 364 # the NFS at one of these dirs
 365 mkdir -p /run/archiso/bootmnt
 366 mkdir -p /run/parabolaiso/bootmnt
 367
 368 # todo: at some later time, i found /mnt/usb not mounted, watch to see if
 369 # that is the case after running this or rebooting.
 370 # wiki says safe to do in case of fstab changes:
 371
 372 ## ian: usb broke on old router. if that happens, can just comment this to disable problems
 373 # echo | cedit /etc/config/fstab ||:
 374 v cedit /etc/config/fstab <<EOF || { v block umount; v block mount; }
 375 config global automount
 376       option from_fstab 1
 377       option anon_mount 1
 378
 379 config mount
 380 # /overlay is an / overlay mount for installing extra packages, etc.
 381 # https://openwrt.org/docs/guide-user/additional-software/extroot_configuration
 382       option target     /mnt/usb
 383 #      option target    /overlay
 384       option device     /dev/sda1
 385       option fstype     ext4
 386       option options    rw,async,noatime,nodiratime
 387       option enabled    0
 388 EOF
 389
 390
 391 # ian: disabled because afaik I don't need it, no benefit.
 392 # config global autoswap
 393 #       option from_fstab 1
 394 #       option anon_swap 1
 395
 396 # config swap
 397 #       option device   /dev/sda1
 398 #       option enabled  1
 399
 400
 401
 402
 403 # exportfs -ra wont cut it when its the same path, but now a bind mount
 404 # todo: restart nfs when nfs is enabled?
 405 #cedit /etc/exports <<EOF || v /etc/init.d/nfsd restart ||:
 406 cedit /etc/exports <<EOF ||:
 407 /mnt/usb  $lan/$cidr(rw,no_root_squash,insecure,sync,no_subtree_check)
 408 # for arch pxe
 409 /run/archiso/bootmnt    $lan/$cidr(rw,no_root_squash,insecure,sync,no_subtree_check)
 410 /run/parabolaiso/bootmnt        $lan/$cidr(rw,no_root_squash,insecure,sync,no_subtree_check)
 411 EOF
 412
 413
 414 # todo: enable nfs when we need it only.
 415 # v /etc/init.d/portmap start
 416 # v /etc/init.d/nfsd start
 417 # v /etc/init.d/portmap enable
 418 # v /etc/init.d/nfsd enable
 419
 420
 421
 422
 423
 424
 425
 426
 427 ########## openvpn exampl
 428 ########## missing firewall settings for routing lan
 429 ########## traffic
 430 # v /etc/init.d/openvpn start
 431 # v /etc/init.d/openvpn enable
 432
 433 # # from https://wiki.openwrt.org/doc/uci/firewall
 434 # # todo: not sure if /etc/init.d/network needs restarting.
 435 # # I did, and I had to restart the vpn afterwards.
 436 # # This maps a uci interface to a real interface which is
 437 # # managed outside of uci.
 438 # v cedit /etc/config/network <<'EOF' ||:
 439 # config interface 'tun0'
 440 #         option ifname 'tun0'
 441 #         option proto 'none'
 442 # EOF
 443 # v cedit /etc/config/openvpn <<'EOF' || v /etc/init.d/openvpn restart
 444 # config openvpn my_client_config
 445 #         option enabled 1
 446 #         option config /etc/openvpn/client.conf
 447 # EOF
 448
 449 wgip4=10.3.0.1/24
 450 wgip6=fdfd::1/64
 451 wgport=26000
 452
 453 network_restart=false
 454 if $client; then
 455   v cedit wific /etc/config/network <<EOF || network_restart=true
 456 # https://openwrt.org/docs/guide-user/network/wifi/connect_client_wifi
 457 config interface 'wwan'
 458  option proto 'dhcp'
 459 EOF
 460 fi
 461
 462 v cedit /etc/config/network <<EOF || network_restart=true
 463 config 'route' 'transmission'
 464  option 'interface' 'lan'
 465  option 'target' '10.173.0.0'
 466  option 'netmask' '255.255.0.0'
 467  option 'gateway' '$l.3'
 468
 469 option interface 'wg0'
 470  option proto 'wireguard'
 471  option private_key '$(cat /root/wg.key)'
 472  option listen_port $wgport
 473  list addresses '10.3.0.1/24'
 474  list addresses 'fdfd::1/64'
 475
 476 # tp
 477 config wireguard_wg0 'wgclient'
 478  option public_key '3q+WJGrm85r59NgeXOIvppxoW4ux/+koSw6Fee1c1TI='
 479  option preshared_key '$(cat /root/wg.psk)'
 480  list allowed_ips '10.3.0.2/24'
 481  list allowed_ips 'fdfd::2/64'
 482 EOF
 483
 484 if $network_restart; then
 485   v /etc/init.d/network reload
 486 fi
 487
 488 firewall-cedit() {
 489
 490   if $client; then
 491     v cedit wific /etc/config/firewall <<EOF
 492 config zone
 493  option name    wwan
 494  option input    REJECT
 495  option output   ACCEPT
 496  option forward  REJECT
 497  option masq     1
 498  option mtu_fix  1
 499  option network  wwan
 500 EOF
 501   fi
 502
 503   case $hostname in
 504     wrt)
 505       v cedit host /etc/config/firewall <<EOF
 506 config redirect
 507  option name ssh
 508  option src              wan
 509  option src_dport        22
 510  option dest_ip          $l.3
 511  option dest             lan
 512 EOF
 513       ;;
 514     cmc)
 515       v cedit host /etc/config/firewall <<EOF
 516 config redirect
 517  option name ssh
 518  option src              wan
 519  option src_dport        22
 520  option dest_ip          $l.2
 521  option dest             lan
 522 EOF
 523       ;;
 524   esac
 525
 526   v cedit /etc/config/firewall <<EOF
 527 config rule
 528  option src              wan
 529  option target           ACCEPT
 530  option dest_port        22
 531
 532 config redirect
 533  option name sshtp
 534  option src              wan
 535  option src_dport        2202
 536  option dest_port        22
 537  option dest_ip          $l.2
 538  option dest             lan
 539 config rule
 540  option src              wan
 541  option target           ACCEPT
 542  option dest_port        2202
 543
 544 config redirect
 545  option name sshx2
 546  option src              wan
 547  option src_dport        2205
 548  option dest_port        22
 549  option dest_ip          $l.5
 550  option dest             lan
 551 config rule
 552  option src              wan
 553  option target           ACCEPT
 554  option dest_port        2205
 555
 556 config redirect
 557  option name sshx3
 558  option src              wan
 559  option src_dport        2207
 560  option dest_port        22
 561  option dest_ip          $l.7
 562  option dest             lan
 563 config rule
 564  option src              wan
 565  option target           ACCEPT
 566  option dest_port        2207
 567
 568 config redirect
 569  option name sshtp
 570  option src              wan
 571  option src_dport        2208
 572  option dest_port        22
 573  option dest_ip          $l.8
 574  option dest             lan
 575 config rule
 576  option src              wan
 577  option target           ACCEPT
 578  option dest_port        2208
 579
 580 config redirect
 581  option name sshbb8
 582  option src              wan
 583  option src_dport        2209
 584  option dest_port        22
 585  option dest_ip          $l.9
 586  option dest             lan
 587 config rule
 588  option src              wan
 589  option target           ACCEPT
 590  option dest_port        2209
 591
 592 config redirect
 593  option name icecast
 594  option src              wan
 595  option src_dport        8000
 596  option dest_port        8000
 597  option dest_ip          $l.2
 598  option dest             lan
 599 config rule
 600  option src              wan
 601  option target           ACCEPT
 602  option dest_port        8000
 603
 604 config rule
 605  option name sshwrt
 606  option src              wan
 607  option target           ACCEPT
 608  option dest_port        2220
 609
 610 config rule
 611  option name wg
 612  option src              wan
 613  option target           ACCEPT
 614  option dest_port        $wgport
 615  option proto            udp
 616
 617
 618 config redirect
 619  option name httpkd
 620  option src              wan
 621  option src_dport        80
 622  option dest             lan
 623  option dest_ip          $l.2
 624  option proto            tcp
 625 config rule
 626  option src              wan
 627  option target           ACCEPT
 628  option dest_port        80
 629  option proto            tcp
 630
 631 config redirect
 632  option name httpskd
 633  option src              wan
 634  option src_dport        443
 635  option dest             lan
 636  option dest_ip          $l.2
 637  option proto            tcp
 638 config rule
 639  option src              wan
 640  option target           ACCEPT
 641  option dest_port        443
 642  option proto            tcp
 643
 644 config redirect
 645  option name syncthing
 646  option src              wan
 647  option src_dport        22001
 648  option dest_ip          $l.8
 649  option dest             lan
 650 config rule
 651  option src              wan
 652  option target           ACCEPT
 653  option dest_port        22001
 654
 655
 656 config rule
 657  option name ssh-ipv6
 658  option src wan
 659  option dest lan
 660  # note, using mac transform, we could allow all traffic to a host like this,
 661  # replacing 1 as appropriate
 662  #option dest_ip ::111:11ff:fe11:1111/::ffff:ffff:ffff:ffff
 663  option dest_port 22
 664  option target ACCEPT
 665  option family ipv6
 666
 667 config rule
 668  option name http-ipv6
 669  option src wan
 670  option dest lan
 671  option dest_port 80
 672  option target ACCEPT
 673  option family ipv6
 674
 675 config rule
 676  option name https-ipv6
 677  option src wan
 678  option dest lan
 679  option dest_port 443
 680  option target ACCEPT
 681  option family ipv6
 682
 683 config rule
 684  option name node-exporter
 685  option src wan
 686  option dest lan
 687  option dest_port 9101
 688  option target ACCEPT
 689  option family ipv6
 690
 691 config rule
 692  option name mail587-ipv6
 693  option src wan
 694  option dest lan
 695  option dest_port 587
 696  option target ACCEPT
 697  option family ipv6
 698
 699 EOF
 700 }
 701 firewall-cedit || firewall_restart=true
 702
 703 # not using wireguard for now
 704 # if ! uci get firewall.@zone[1].network | grep wg0 &>/dev/null; then
 705 #   # cant mix cedit plus uci
 706 #   echo | cedit /etc/config/firewall ||:
 707 #   uci add_list firewall.@zone[1].network=wg0
 708 #   uci commit firewall
 709 #   firewall-cedit ||:
 710 #   firewall_restart=true
 711 # fi
 712
 713
 714
 715 v cedit /etc/hosts <<EOF || dnsmasq_restart=true
 716 127.0.1.1 $hostname
 717 EOF
 718 # not sure this case statement is needed
 719 case $hostname in
 720   cmc)
 721     v cedit host /etc/hosts <<EOF || dnsmasq_restart=true
 722 $l.1 $hostname
 723 EOF
 724     ;;
 725 esac
 726
 727
 728 #mail_host=$(grep -F mail.iankelling.org /etc/hosts | awk '{print $1}')
 729 # if [[ $mail_host ]]; then
 730 #     sed -i '/^$mail_host/a mail.iankelling.org' /etc/hosts
 731 # fi
 732
 733
 734 uset dhcp.@dnsmasq[0].domain b8.nz
 735 uset system.@system[0].hostname $hostname
 736 uset dhcp.@dnsmasq[0].local
 737
 738 # uci doesnt seem to have a way to set an empty value,
 739 # if you delete it, it goes back to the default. this seems
 740 # to be a decent workaround.
 741 # todo: setup /etc/resolv.conf to point to 127.0.0.1
 742 uset dhcp.@dnsmasq[0].resolvfile=/dev/null
 743
 744 # disabled for now. i want to selectively enable it
 745 # for specific hosts.
 746 if [[ $(uci get adblock.global.adb_enabled) != 0 ]]; then
 747   v uci set adblock.global.adb_enabled=0
 748   uci commit adblock
 749   /etc/init.d/adblock restart
 750 fi
 751 # https://github.com/openwrt/packages/tree/master/net/adblock/files
 752 cat >/etc/crontabs/root <<'EOF'
 753 0 06 * * *    /etc/init.d/adblock reload
 754 EOF
 755
 756
 757 # useful: http://wiki.openwrt.org/doc/howto/dhcp.dnsmasq
 758
 759 # sometimes /mnt/usb fails, cuz it's just a flash drive,
 760 # so make sure we have this dir or else dnsmasq will fail
 761 # to start.
 762 mkdir -p /mnt/usb/tftpboot
 763 v cedit /etc/dnsmasq.conf <<EOF || dnsmasq_restart=true
 764 server=/b8.nz/#
 765 ptr-record=1.0.2.10.in-addr.arpa.,cmc.b8.nz
 766 ptr-record=2.0.2.10.in-addr.arpa.,kd.b8.nz
 767 ptr-record=3.0.2.10.in-addr.arpa.,sy.b8.nz
 768 ptr-record=4.0.2.10.in-addr.arpa.,wrt2.b8.nz
 769 ptr-record=5.0.2.10.in-addr.arpa.,x2.b8.nz
 770 ptr-record=6.0.2.10.in-addr.arpa.,xw2.b8.nz
 771 ptr-record=7.0.2.10.in-addr.arpa.,syw.b8.nz
 772 ptr-record=8.0.2.10.in-addr.arpa.,tp.b8.nz
 773 ptr-record=9.0.2.10.in-addr.arpa.,bb8.b8.nz
 774 ptr-record=12.0.2.10.in-addr.arpa.,demohost.b8.nz
 775 ptr-record=14.0.2.10.in-addr.arpa.,wrt3.b8.nz
 776 ptr-record=19.0.2.10.in-addr.arpa.,brother.b8.nz
 777 ptr-record=25.0.2.10.in-addr.arpa.,hp.b8.nz
 778 ptr-record=.0.2.10.in-addr.arpa.,transmission.b8.nz
 779
 780 # https://ret2got.wordpress.com/2018/01/19/how-your-ethereum-can-be-stolen-using-dns-rebinding/
 781 stop-dns-rebind
 782 rebind-domain-ok=b8.nz
 783
 784 # this says the ip of default gateway and dns server,
 785 # but I think they are unneded and default
 786 #dhcp-option=3,$l.1
 787 #dhcp-option=6,$l.1
 788
 789
 790
 791 # results from googling around dnsmasq optimizations
 792 # about 50k in memory. router has 62 megs.
 793 # in a browsing session, I probably won't ever do 5000 lookups
 794 # before the ttl expiration or whatever does expiration.
 795 cache-size=10000
 796
 797 # ask all servers, use the one which responds first.
 798 # http://ma.ttwagner.com/make-dns-fly-with-dnsmasq-all-servers/
 799 all-servers
 800
 801 # namebench benchmarks dns servers. google's dns was only
 802 # slightly less fast than some others, and I trust it more
 803 # to give accurate results, stay relatively fast, and
 804 # not do anythin too malicious, so just use that.
 805 # download namebench and run it like this:
 806 # for x in all regional isp global preferred nearby; do ./namebench.py -s \$x -c US -i firefox -m weighted -J 10 -w; echo \$x; hr;  done
 807 # google
 808 server=8.8.4.4
 809 server=8.8.8.8
 810 server=2001:4860:4860::8888
 811 server=2001:4860:4860::8844
 812
 813
 814 # to fixup existin ips, on the client you can do
 815 # sudo dhclient -r; sudo dhclient <interface-name>
 816
 817 # default dhcp range is 100-150
 818 # bottom port,  iPXE (PCI 03:00.0) in seabios boot menu
 819 dhcp-host=c8:60:00:31:6b:75,set:kd,$l.2,kd
 820 dhcp-host=94:05:bb:1e:2c:2e,set:sy,$l.3,sy
 821 # top port, iPXE (PCI 04:00.0) in seabios boot menu
 822 #dhcp-host=c8:60:00:2b:15:07,set:kd,$l.2,kd
 823 # 4 is reserved for a staticly configured host wrt2
 824 # old x2 with bad fan
 825 #dhcp-host=00:1f:16:16:39:24,set:x2,$l.5,x2
 826 dhcp-host=f0:de:f1:81:ec:88,set:x2,$l.5,x2
 827 dhcp-host=c4:8e:8f:44:f5:63,set:x2w,$l.6,x2w
 828 dhcp-host=34:7d:f6:ed:ec:07,set:syw,$l.7,syw
 829 dhcp-host=80:fa:5b:1c:6e:cf,set:tp,$l.8,tp
 830 # This is so fai can have an explicit name to use for testing,
 831 # or else any random machine which did a pxe boot would get
 832 # reformatted. The mac is from doing a virt-install, cancelling it,
 833 # and copying the generated mac, so it should be randomish.
 834 dhcp-host=52:54:00:9c:ef:ad,set:demohost,$l.12,demohost
 835 dhcp-host=62:03:cb:a8:3e:a3,set:trp,$1.13,trp
 836 dhcp-host=00:1f:16:14:01:d8,set:x3,$l.18,x3
 837 # BRN001BA98CA823 in dhcp logs
 838 dhcp-host=00:1b:a9:8c:a8:23,set:brother,$l.19,brother
 839 dhcp-host=38:63:bb:07:5a:f9,set:hp,$l.25,hp
 840 dhcp-host=00:26:b6:f6:0f:e9,set:frodow,$l.28,frodow
 841 dhcp-host=00:26:18:97:bb:16,set:frodo,$l.29,frodo
 842
 843
 844 # faiserver vm
 845 dhcp-host=52:54:00:56:09:f9,set:faiserver,$l.15,faiserver
 846
 847 # This is the ip it picks by default if dhcp fails,
 848 # so might as well use it.
 849 # hostname is the name it uses according to telnet
 850 dhcp-host=b4:75:0e:94:29:ca,set:switch9429ca,$l.251,switch9429ca
 851
 852 # template
 853 # dhcp-host=,$l.,
 854
 855 # Just leave the tftp server up even if we aren't doing pxe boot.
 856 # It has no sensitive info.
 857 enable-tftp=br-lan
 858 tftp-root=/mnt/usb/tftpboot
 859 dhcp-optsfile=/etc/dnsmasq-dhcpopts.conf
 860
 861 #log-queries=extra
 862 EOF
 863
 864
 865 if $dnsmasq_restart && ! $dev2; then
 866   # todo: can our ptr records be put in /etc/hosts?
 867   # eg: user normal /etc/hosts records, and they wont be used for A resolution
 868   # due to the other settings, but will be used for ptr? then maybe
 869   # we dont have to restart dnsmasq for a dns update?
 870   #
 871   # todo: according to this
 872   # https://www.redpill-linpro.com/techblog/2019/08/27/evaluating-local-dnssec-validators.html#toggling-dnssec-validation-1
 873   # we should turn on dnssec validation when wrt gets version > 2.80. currently at 2.80.
 874   # todo: download https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/base/dnsmasq-full_2.84-1_mipsel_24kc.ipk
 875   # and install it. then we can turn off dnssec in systemd-resolved
 876   #
 877   # Also, reload of dnsmasq seems to break things, wifi
 878   # clients were not getting internet connectivity.
 879   v /etc/init.d/dnsmasq restart
 880 fi
 881
 882 if $firewall_restart; then
 883   v /etc/init.d/firewall restart
 884 fi
 885
 886 # this may just restart the network and take care of the network_restart below.
 887 if $wireless_restart; then
 888   v wifi
 889 fi
 890
 891 # todo: we should catch errors and still run this if needed
 892 if $network_restart; then
 893   reboot
 894 fi
 895
 896 exit 0