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 set -eE -o pipefail
  19 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
  20
  21
  22 usage() {
  23   cat <<EOF
  24 usage: ${0##*/} [-h] [-t 2|test] [-m WIRELESS_MAC]
  25 setup my router in general: dhcp, dns, etc.
  26
  27 Type 2 is for setting up a backup device. Type test is for setting up a
  28 testing device.
  29
  30 Passing an empty string for WIRELESS_MAC will cause the device's native
  31 mac to be used.
  32
  33 EOF
  34
  35   exit $1
  36 }
  37
  38
  39 dev2=false
  40 test=false
  41 hostname=wrt
  42 libremanage_host=wrt2
  43
  44 lanip=1
  45 while getopts hm:t: opt; do
  46   case $opt in
  47     h) usage ;;
  48     t)
  49       case $2 in
  50         2)
  51           dev2=true
  52           lanip=4
  53           hostname=wrt2
  54           libremanage_host=wrt
  55           ;;
  56         test)
  57           test=true
  58           ;;
  59         *) echo "$0: unexpected arg to -t: $*" >&2; usage 1 ;;
  60       esac
  61       ;;
  62     m)  mac=$OPTARG ;;
  63     *) echo "$0: Internal error! unexpected args: $*" >&2 ; usage 1 ;;
  64   esac
  65 done
  66 shift "$((OPTIND-1))"   # Discard the options and sentinel --
  67
  68 if [[ ! $mac ]] && ! $test; then
  69   # if we wanted to increment it
  70   #WIRELESSMAC=${WIRELESSMAC:0: -1}$((${WIRELESSMAC: -1} + 2))
  71   mac=$WIRELESSMAC
  72 fi
  73
  74 if (( $# != 0 )); then
  75   usage 1
  76 fi
  77
  78
  79 macpre=${mac:0: -1}
  80 macsuf=${mac: -1}
  81
  82 pmirror() {
  83   # background: upgrading all packages is not recommended because it
  84   # doesn't go into the firmware. build new firmware if you want
  85   # lots of upgrades. I think /tmp/opkg-lists is a pre openwrt 14 location.
  86   f=(/var/opkg-lists/*)
  87   if ! (( $(date -r $f +%s) + 60*60*24 > $(date +%s) )); then
  88     opkg update
  89   fi
  90 }
  91
  92 pi() {
  93   for x in "$@"; do
  94     if [[ ! $(opkg list-installed "$x") ]]; then
  95       pmirror
  96       opkg install "$@"
  97     fi
  98   done
  99 }
 100
 101 v() {
 102   printf "+ %s\n" "$*"
 103   "$@"
 104 }
 105
 106 ######### uci example:#######
 107 # # https://wiki.openwrt.org/doc/uci
 108 # wan_index=$(uci show firewall | sed -rn 's/firewall\.@zone\[([0-9])+\]\.name=wan/\1/p')
 109 # wan="firewall.@zone[$wan_index]"
 110 # if [[ $(uci get firewall.@forwarding[0].dest) != $forward_dest ]]; then
 111 #     # default is wan
 112 #     v uci set firewall.@forwarding[0].dest=$forward_dest
 113 #     uci commit firewall
 114 #     firewall_restart=true
 115 # fi
 116 ####### end uci example #####
 117
 118 uset() {
 119   local key="$1"
 120   local val="$2"
 121   local service="${key%%.*}"
 122   restart_var=${service}_restart
 123   if [[ ! ${!restart_var} ]]; then
 124     eval $restart_var=false
 125   fi
 126   if [[ $(uci get "$key") != "$val" ]]; then
 127     v uci set "$key"="$val"
 128     uci commit $service
 129     eval $restart_var=true
 130   fi
 131 }
 132
 133
 134 ### network config
 135 ###
 136 ssid="check out gnu.org"
 137 lan=10.0.0.0
 138 if $test; then
 139   ssid="gnuv3"
 140   lan=10.1.0.0
 141 fi
 142 mask=255.255.0.0
 143 cidr=16
 144 l=${lan%.0}
 145
 146 passwd -l root ||: #already locked fails
 147
 148 sed -ibak '/^root:/d' /etc/shadow
 149 # /root/router created by manually running passwd then copying the resulting
 150 # line. We have no mkpasswd on wrt/librecmc, then we scp it in.
 151 cat /root/router >>/etc/shadow
 152 # otherwise, serial console gets root login with no password
 153 uset system.@system[0].ttylogin 1
 154
 155
 156 cat >/usr/bin/archlike-pxe-mount <<'EOFOUTER'
 157 #!/bin/bash
 158 # symlinks are collapsed for nfs mount points, so use a bind mount.
 159 # tried putting this in /etc/config/fstab,
 160 # then doing block mount, it didn't work. This doesn't persist across reboots,
 161 # todo: figure that out
 162 rm -f /etc/fstab
 163 for d in /run/{arch,parabola}iso/bootmnt; do
 164 cat >>/etc/fstab <<EOF
 165 /mnt/usb/tftpboot $d none bind 0 0
 166 EOF
 167 mount | grep $d &>/dev/null || mount $d
 168 done
 169 /etc/init.d/nfsd restart
 170 EOFOUTER
 171 chmod +x /usr/bin/archlike-pxe-mount
 172
 173 sed -i '/^root:/s,/bin/ash$,/bin/bash,' /etc/passwd
 174 # usb, screen, relay are for libremanage
 175 v pi kmod-usb-storage block-mount kmod-fs-ext4 nfs-kernel-server \
 176   tcpdump openvpn-openssl adblock libusb-compat /root/relay_1.0-1_mips_24kc.ipk \
 177   screen kmod-usb-serial-cp210x kmod-usb-serial-ftdi
 178
 179 cat >/etc/libremanage.conf <<EOF
 180 ${libremanage_host}_type=switch
 181 ${libremanage_host}_channel=1
 182 EOF
 183
 184
 185
 186 v /etc/init.d/fstab enable ||:
 187
 188 # rebooting makes mounting work, but comparing lsmod,
 189 # i'm guessing this will too. todo, test it.
 190 # 255 == module already loaded
 191 for mod in scsi_mod sd_mod; do v modprobe $mod || [[ $? == 255 ]]; done
 192
 193 # for archlike pxe. The default settings in the installer expect to find
 194 # the NFS at one of these dirs
 195 mkdir -p /run/archiso/bootmnt
 196 mkdir -p /run/parabolaiso/bootmnt
 197
 198 # todo: at some later time, i found /mnt/usb not mounted, watch to see if
 199 # that is the case after running this or rebooting.
 200 # wiki says safe to do in case of fstab changes:
 201
 202 ## ian: usb broke on old router. if that happens, can just comment this to disable problems
 203 echo | cedit /etc/config/fstab ||:
 204 cedit /etc/config/fstab <<EOF || { v block umount; v block mount; }
 205 config global automount
 206       option from_fstab 1
 207       option anon_mount 1
 208
 209 config mount
 210 # /overlay is an / overlay mount for installing extra packages, etc.
 211 # https://openwrt.org/docs/guide-user/additional-software/extroot_configuration
 212       option target     /mnt/usb
 213 #      option target    /overlay
 214       option device     /dev/sda1
 215       option fstype     ext4
 216       option options    rw,async,noatime,nodiratime
 217       option enabled    0
 218 EOF
 219
 220
 221 # ian: disabled because afaik I don't need it, no benefit.
 222 # config global autoswap
 223 #       option from_fstab 1
 224 #       option anon_swap 1
 225
 226 # config swap
 227 #       option device   /dev/sda1
 228 #       option enabled  1
 229
 230
 231
 232
 233 # exportfs -ra wont cut it when its the same path, but now a bind mount
 234 # todo: restart nfs when nfs is enabled?
 235 #cedit /etc/exports <<EOF || v /etc/init.d/nfsd restart ||:
 236 cedit /etc/exports <<EOF ||:
 237 /mnt/usb  $lan/$cidr(rw,no_root_squash,insecure,sync,no_subtree_check)
 238 # for arch pxe
 239 /run/archiso/bootmnt    $lan/$cidr(rw,no_root_squash,insecure,sync,no_subtree_check)
 240 /run/parabolaiso/bootmnt        $lan/$cidr(rw,no_root_squash,insecure,sync,no_subtree_check)
 241 EOF
 242
 243
 244 # todo: enable nfs when we need it only.
 245 # v /etc/init.d/portmap start
 246 # v /etc/init.d/nfsd start
 247 # v /etc/init.d/portmap enable
 248 # v /etc/init.d/nfsd enable
 249
 250
 251
 252
 253
 254
 255
 256 uset dropbear.@dropbear[0].PasswordAuth 0
 257 uset dropbear.@dropbear[0].RootPasswordAuth 0
 258 uset dropbear.@dropbear[0].Port 2220
 259 if ! cmp -s /root/dropbear_rsa_host_key /etc/dropbear/dropbear_rsa_host_key; then
 260   cp /root/dropbear_rsa_host_key /etc/dropbear/dropbear_rsa_host_key
 261   dropbear_restart=true
 262 fi
 263
 264 wireless_restart=false
 265 key=pictionary49
 266 for x in 0 1; do
 267   uset wireless.default_radio$x.ssid "$ssid"
 268   uset wireless.default_radio$x.key $key
 269   uset wireless.default_radio$x.encryption psk2
 270   if [[ $mac ]]; then
 271     uset wireless.default_radio$x.macaddr $macpre$((macsuf + 2*x))
 272   fi
 273   # secondary device has wireless disabled
 274   uset wireless.radio$x.disabled $dev2
 275 done
 276
 277 if $wireless_restart; then
 278   v wifi
 279 fi
 280
 281
 282 ########## openvpn exampl
 283 ########## missing firewall settings for routing lan
 284 ########## traffic
 285 # v /etc/init.d/openvpn start
 286 # v /etc/init.d/openvpn enable
 287
 288 # # from https://wiki.openwrt.org/doc/uci/firewall
 289 # # todo: not sure if /etc/init.d/network needs restarting.
 290 # # I did, and I had to restart the vpn afterwards.
 291 # # This maps a uci interface to a real interface which is
 292 # # managed outside of uci.
 293 # v cedit /etc/config/network <<'EOF' ||:
 294 # config interface 'tun0'
 295 #         option ifname 'tun0'
 296 #         option proto 'none'
 297 # EOF
 298 # v cedit /etc/config/openvpn <<'EOF' || v /etc/init.d/openvpn restart
 299 # config openvpn my_client_config
 300 #         option enabled 1
 301 #         option config /etc/openvpn/client.conf
 302 # EOF
 303
 304
 305
 306 v cedit /etc/config/network <<EOF || v /etc/init.d/network reload
 307 config 'route' 'transmission'
 308         option 'interface' 'lan'
 309         option 'target' '10.173.0.0'
 310         option 'netmask' '255.255.0.0'
 311         option 'gateway' '$l.3'
 312 EOF
 313
 314 firewall_restart=false
 315 v cedit /etc/config/firewall <<EOF || firewall_restart=true
 316
 317
 318 config redirect
 319  option name ssh
 320  option src              wan
 321  option src_dport        22
 322  option dest_ip          $l.8
 323  option dest             lan
 324 config rule
 325  option src              wan
 326  option target           ACCEPT
 327  option dest_port        22
 328
 329 config redirect
 330  option name sshalt
 331  option src              wan
 332  option src_dport        2222
 333  option dest_port        22
 334  option dest_ip          $l.3
 335  option dest             lan
 336 config rule
 337  option src              wan
 338  option target           ACCEPT
 339  option dest_port        2222
 340
 341 config rule
 342  option src              wan
 343  option target           ACCEPT
 344  option dest_port        2220
 345
 346
 347 config redirect
 348  option src              wan
 349  option src_dport        443
 350  option dest             lan
 351  option dest_ip          $l.8
 352  option proto            tcp
 353 config rule
 354  option src              wan
 355  option target           ACCEPT
 356  option dest_port        443
 357  option proto            tcp
 358
 359 config redirect
 360  option src              wan
 361  option src_dport        1196
 362  option dest             lan
 363  option dest_ip          $l.8
 364  option proto            udp
 365 config rule
 366  option src              wan
 367  option target           ACCEPT
 368  option dest_port        1196
 369  option proto            udp
 370
 371
 372 config redirect
 373  option src              wan
 374  option src_dport        80
 375  option dest             lan
 376  option dest_ip          $l.8
 377  option proto            tcp
 378 config rule
 379  option src              wan
 380  option target           ACCEPT
 381  option dest_port        80
 382  option proto            tcp
 383
 384 config redirect
 385  option name syncthing
 386  option src              wan
 387  option src_dport        22001
 388  option dest_ip          $l.8
 389  option dest             lan
 390 config rule
 391  option src              wan
 392  option target           ACCEPT
 393  option dest_port        22001
 394
 395
 396 config rule
 397  option name ssh-ipv6
 398  option src wan
 399  option dest lan
 400  # note, using mac transform, we could allow all traffic to a host like this,
 401  # replacing 1 as appropriate
 402  #option dest_ip ::111:11ff:fe11:1111/::ffff:ffff:ffff:ffff
 403  option dest_port 22
 404  option target ACCEPT
 405  option family ipv6
 406
 407 config rule
 408  option name http-ipv6
 409  option src wan
 410  option dest lan
 411  option dest_port 80
 412  option target ACCEPT
 413  option family ipv6
 414
 415 config rule
 416  option name http-ipv6
 417  option src wan
 418  option dest lan
 419  option dest_port 80
 420  option target ACCEPT
 421  option family ipv6
 422
 423 config rule
 424  option name node-exporter
 425  option src wan
 426  option dest lan
 427  option dest_port 9101
 428  option target ACCEPT
 429  option family ipv6
 430
 431 config rule
 432  option name mail587-ipv6
 433  option src wan
 434  option dest lan
 435  option dest_port 587
 436  option target ACCEPT
 437  option family ipv6
 438
 439
 440 EOF
 441
 442
 443
 444
 445 dnsmasq_restart=false
 446 v cedit /etc/hosts <<EOF || dnsmasq_restart=true
 447 127.0.1.1 wrt
 448 $l.1 wrt
 449 $l.2 kd
 450 $l.3 frodo
 451 $l.4 wrt2
 452 $l.5 x2
 453 $l.6 demohost
 454 $l.7 x3
 455 $l.8 tp b8.nz faiserver
 456 $l.9 bb8
 457 72.14.176.105 li
 458
 459 # netns creation looks for next free subnet starting at 10.173, but I only
 460 # use one, and I would keep this one as the first created.
 461 10.173.0.2 transmission
 462 EOF
 463
 464 #mail_host=$(grep -F mail.iankelling.org /etc/hosts | awk '{print $1}')
 465 # if [[ $mail_host ]]; then
 466 #     sed -i '/^$mail_host/a mail.iankelling.org' /etc/hosts
 467 # fi
 468
 469
 470 # avoid using the dns servers that my isp tells me about.
 471 if [[ $(uci get dhcp.@dnsmasq[0].resolvfile 2>/dev/null) ]]; then
 472   # default is '/tmp/resolv.conf.auto', we switch to the dnsmasq default of
 473   # /etc/resolv.conf. not sure why I did this.
 474   v uci delete dhcp.@dnsmasq[0].resolvfile
 475   uci commit dhcp
 476   dnsmasq_restart=true
 477 fi
 478
 479 uset dhcp.@dnsmasq[0].domain b8.nz
 480 uset dhcp.@dnsmasq[0].local /b8.nz/
 481 uset system.@system[0].hostname $hostname
 482
 483 if [[ $(uci get adblock.global.adb_enabled) != 1 ]]; then
 484   v uci set adblock.global.adb_enabled=1
 485   uci commit adblock
 486   /etc/init.d/adblock restart
 487 fi
 488 # https://github.com/openwrt/packages/tree/master/net/adblock/files
 489 cat >/etc/crontabs/root <<'EOF'
 490 0 06 * * *    /etc/init.d/adblock reload
 491 EOF
 492
 493
 494 # useful: http://wiki.openwrt.org/doc/howto/dhcp.dnsmasq
 495
 496 # sometimes /mnt/usb fails, cuz it's just a flash drive,
 497 # so make sure we have this dir or else dnsmasq will fail
 498 # to start.
 499 mkdir -p /mnt/usb/tftpboot
 500 v cedit /etc/dnsmasq.conf <<EOF || dnsmasq_restart=true
 501
 502 # https://ret2got.wordpress.com/2018/01/19/how-your-ethereum-can-be-stolen-using-dns-rebinding/
 503 stop-dns-rebind
 504
 505 # this says the ip of default gateway and dns server,
 506 # but I think they are unneded and default
 507 #dhcp-option=3,$l.1
 508 #dhcp-option=6,$l.1
 509
 510
 511
 512 # results from googling around dnsmasq optimizations
 513 # about 50k in memory. router has 62 megs.
 514 # in a browsing session, I probably won't ever do 5000 lookups
 515 # before the ttl expiration or whatever does expiration.
 516 cache-size=10000
 517
 518 # ask all servers, use the one which responds first.
 519 # http://ma.ttwagner.com/make-dns-fly-with-dnsmasq-all-servers/
 520 all-servers
 521
 522 # namebench benchmarks dns servers. google's dns was only
 523 # slightly less fast than some others, and I trust it more
 524 # to give accurate results, stay relatively fast, and
 525 # not do anythin too malicious, so just use that.
 526 # download namebench and run it like this:
 527 # for x in all regional isp global preferred nearby; do ./namebench.py -s \$x -c US -i firefox -m weighted -J 10 -w; echo \$x; hr;  done
 528 # google
 529 server=8.8.4.4
 530 server=8.8.8.8
 531 server=2001:4860:4860::8888
 532 server=2001:4860:4860::8844
 533
 534
 535 # to fixup existin ips, on the client you can do
 536 # sudo dhclient -r; sudo dhclient <interface-name>
 537
 538 # default dhcp range is 100-150
 539 # bottom port,  iPXE (PCI 03:00.0) in seabios boot menu
 540 dhcp-host=c8:60:00:31:6b:75,set:kd,$l.2,kd
 541 # top port, iPXE (PCI 04:00.0) in seabios boot menu
 542 #dhcp-host=c8:60:00:2b:15:07,set:kd,$l.2,kd
 543 dhcp-host=00:26:18:97:bb:16,set:frodo,$l.3,frodo
 544 # 4 is reserved for a staticly configured host.
 545 dhcp-host=00:1f:16:16:39:24,set:x2,$l.5,x2
 546 # This is so fai can have an explicit name to use for testing,
 547 # or else any random machine which did a pxe boot would get
 548 # reformatted. The mac is from doing a virt-install, cancelling it,
 549 # and copying the generated mac, so it should be randomish.
 550 dhcp-host=52:54:00:9c:ef:ad,set:demohost,$l.6,demohost
 551 dhcp-host=00:1f:16:14:01:d8,set:tp,$l.7,x3
 552 dhcp-host=80:fa:5b:1c:6e:cf,set:tp,$l.8,tp
 553
 554 # faiserver vm
 555 dhcp-host=52:54:00:56:09:f9,set:faiserver,$l.15,faiserver
 556
 557 # This is the ip it picks by default if dhcp fails,
 558 # so might as well use it.
 559 # hostname is the name it uses according to telnet
 560 dhcp-host=b4:75:0e:94:29:ca,set:switch9429ca,$l.251,switch9429ca
 561
 562 # template
 563 # dhcp-host=,$l.,
 564
 565 # Just leave the tftp server up even if we aren't doing pxe boot.
 566 # It has no sensitive info.
 567 enable-tftp=br-lan
 568 tftp-root=/mnt/usb/tftpboot
 569 EOF
 570
 571 uset network.lan.ipaddr $l.$lanip
 572 uset network.lan.netmask $mask
 573 uset dhcp.wan.ignore $dev2 # default is false
 574 uset dhcp.lan.ignore $dev2 # default is false
 575 if $dev2; then
 576   uset network.lan.gateway $l.1
 577   uset network.wan.proto none
 578   uset network.wan6.proto none
 579 else
 580   # these are the defaults
 581   uset network.lan.gateway ''
 582   uset network.wan.proto dhcp
 583   uset network.wan6.proto dhcpv6
 584 fi
 585
 586
 587 if $dnsmasq_restart; then
 588   v /etc/init.d/dnsmasq restart
 589 fi
 590
 591 if $firewall_restart; then
 592   v /etc/init.d/firewall restart
 593 fi
 594
 595
 596
 597 if $network_restart; then
 598   reboot
 599 fi
 600 if $dropbear_restart; then
 601   v /etc/init.d/dropbear restart
 602 fi
 603
 604 exit 0