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 pmirror() {
  22   # background: upgrading all packages is not recommended because it
  23   # doesn't go into the firmware. build new firmware if you want
  24   # lots of upgrades. I think /tmp/opkg-lists is a pre openwrt 14 location.
  25   f=(/var/opkg-lists/*)
  26   if ! (( $(date -r $f +%s) + 60*60*24 > $(date +%s) )); then
  27     opkg update
  28   fi
  29 }
  30
  31 pi() {
  32   for x in "$@"; do
  33     if [[ ! $(opkg list-installed "$x") ]]; then
  34       pmirror
  35       opkg install "$@"
  36     fi
  37   done
  38 }
  39
  40 v() {
  41   printf "+ %s\n" "$*"
  42   "$@"
  43 }
  44
  45 ### network config
  46 ###
  47 ssid="check out gnu.org"
  48 lan=10.0.0.0
  49 mask=255.255.0.0
  50 l=${lan%.0}
  51
  52 passwd -l root ||: #already locked fails
  53
  54 cat >/usr/bin/arch-pxe-mount <<'EOFOUTER'
  55 #!/bin/bash
  56 # symlinks are collapsed for nfs mount points, so use a bind mount.
  57 # tried putting this in /etc/config/fstab,
  58 # then doig block mount, it didn't work. This doesn't persist across reboots,
  59 # todo: figure that out
  60 d=/run/archiso/bootmnt
  61 cat > /etc/fstab <<EOF
  62 /mnt/usb/tftpboot $d none bind 0 0
  63 EOF
  64 mount | grep $d &>/dev/null || mount $d
  65 /etc/init.d/nfsd restart
  66 EOFOUTER
  67 chmod +x /usr/bin/arch-pxe-mount
  68
  69 cat >.profile <<'EOF'
  70 # changing login shell emits spam on ssh single commands & scp
  71     # sed -i 's#/bin/ash$#/bin/bash#' /etc/passwd
  72 # https://github.com/openwrt/packages/issues/6137
  73 [ "$BASH_VERSION" != "" ] || exec /bin/bash -i
  74 EOF
  75 v pi kmod-usb-storage block-mount kmod-fs-ext4 nfs-kernel-server \
  76   tcpdump openvpn-openssl adblock
  77
  78
  79
  80
  81
  82 v /etc/init.d/fstab enable ||:
  83
  84 # rebooting makes mounting work, but comparing lsmod,
  85 # i'm guessing this will too. todo, test it.
  86 # 255 == module already loaded
  87 for mod in scsi_mod sd_mod; do v modprobe $mod || [[ $? == 255 ]]; done
  88
  89 # for arch pxe. The default settings in the installer expect to find
  90 # the NFS at /run/archiso/bootmnt
  91 mkdir -p /run/archiso/bootmnt
  92
  93 # todo: at some later time, i found /mnt/usb not mounted, watch to see if
  94 # that is the case after running this or rebooting.
  95 # wiki says safe to do in case of fstab changes:
  96
  97 ## ian: usb broke on old router. if that happens, can just comment this to disable problems
  98 echo | cedit /etc/config/fstab ||:
  99 cedit /etc/config/fstab <<'EOF' || { v block umount; v block mount; }
 100 config global automount
 101       option from_fstab 1
 102       option anon_mount 1
 103
 104 config mount
 105       option target     /mnt/usb
 106       option device     /dev/sda1
 107       option fstype     ext4
 108       option options    rw,async,noatime,nodiratime
 109       option enabled    1
 110 EOF
 111
 112
 113 # ian: disabled because afaik I don't need it, no benefit.
 114 # config global autoswap
 115 #       option from_fstab 1
 116 #       option anon_swap 1
 117
 118 # config swap
 119 #       option device   /dev/sda1
 120 #       option enabled  1
 121
 122
 123
 124
 125 # exportfs -ra wont cut it when its the same path, but now a bind mount
 126 cedit /etc/exports <<EOF || v /etc/init.d/nfsd restart ||:
 127 /mnt/usb  $lan/$netmask(rw,no_root_squash,insecure,sync,no_subtree_check)
 128 # for arch pxe
 129 /run/archiso/bootmnt    $lan/$netmask(rw,no_root_squash,insecure,sync,no_subtree_check)
 130 EOF
 131
 132
 133 v /etc/init.d/portmap start
 134 v /etc/init.d/nfsd start
 135 v /etc/init.d/portmap enable
 136 v /etc/init.d/nfsd enable
 137
 138
 139
 140
 141
 142
 143 ######### uci example:#######
 144 # # https://wiki.openwrt.org/doc/uci
 145 # wan_index=$(uci show firewall | sed -rn 's/firewall\.@zone\[([0-9])+\]\.name=wan/\1/p')
 146 # wan="firewall.@zone[$wan_index]"
 147 # if [[ $(uci get firewall.@forwarding[0].dest) != $forward_dest ]]; then
 148 #     # default is wan
 149 #     v uci set firewall.@forwarding[0].dest=$forward_dest
 150 #     uci commit firewall
 151 #     firewall_restart=true
 152 # fi
 153
 154
 155 wireless_restart=true
 156 key=pictionary49
 157 for x in 0 1; do
 158   if [[ $(uci get wireless.default_radio$x.ssid) != "$ssid" ]]; then
 159     v uci set wireless.default_radio$x.ssid="$ssid"
 160     wireless_restart=true
 161   fi
 162   if [[ $(uci get wireless.default_radio$x.key) != $key ]]; then
 163     v uci set wireless.default_radio$x.key=$key
 164     wireless_restart=true
 165   fi
 166   if [[ $(uci get wireless.default_radio$x.encryption) != $key ]]; then
 167     v uci set wireless.default_radio$x.encryption=$key
 168     wireless_restart=true
 169   fi
 170   if [[ $(uci get wireless.default_radio$x.disabled 2>/dev/null) ]]; then
 171     v uci delete wireless.default_radio$x.disabled
 172     wireless_restart=true
 173   fi
 174 done
 175
 176 if $wireless_restart; then
 177   uci commit wireless
 178   v wifi
 179 fi
 180
 181
 182 ########## openvpn exampl
 183 ########## missing firewall settings for routing lan
 184 ########## traffic
 185 # v /etc/init.d/openvpn start
 186 # v /etc/init.d/openvpn enable
 187
 188 # # from https://wiki.openwrt.org/doc/uci/firewall
 189 # # todo: not sure if /etc/init.d/network needs restarting.
 190 # # I did, and I had to restart the vpn afterwards.
 191 # # This maps a uci interface to a real interface which is
 192 # # managed outside of uci.
 193 # v cedit /etc/config/network <<'EOF' ||:
 194 # config interface 'tun0'
 195 #         option ifname 'tun0'
 196 #         option proto 'none'
 197 # EOF
 198 # v cedit /etc/config/openvpn <<'EOF' || v /etc/init.d/openvpn restart
 199 # config openvpn my_client_config
 200 #         option enabled 1
 201 #         option config /etc/openvpn/client.conf
 202 # EOF
 203
 204
 205
 206 v cedit /etc/config/network <<EOF || v /etc/init.d/network reload
 207 config 'route' 'transmission'
 208         option 'interface' 'lan'
 209         option 'target' '10.173.0.0'
 210         option 'netmask' '255.255.0.0'
 211         option 'gateway' '$l.3'
 212 EOF
 213
 214 v cedit /etc/config/firewall <<EOF || firewall_restart=true
 215 config redirect
 216     option name ssh
 217     option src              wan
 218     option src_dport        22
 219     option dest_ip          $l.8
 220     option dest             lan
 221 config rule
 222     option src              wan
 223     option target           ACCEPT
 224     option dest_port        22
 225
 226 config redirect
 227     option name sshalt
 228     option src              wan
 229     option src_dport        2222
 230     option dest_port        22
 231     option dest_ip          $l.3
 232     option dest             lan
 233 config rule
 234     option src              wan
 235     option target           ACCEPT
 236     option dest_port        2222
 237
 238 config redirect
 239     option src              wan
 240     option src_dport        443
 241     option dest             lan
 242     option dest_ip          $l.8
 243     option proto            tcp
 244 config rule
 245     option src              wan
 246     option target           ACCEPT
 247     option dest_port        443
 248     option proto            tcp
 249
 250 config redirect
 251     option src              wan
 252     option src_dport        1196
 253     option dest             lan
 254     option dest_ip          $l.8
 255     option proto            udp
 256 config rule
 257     option src              wan
 258     option target           ACCEPT
 259     option dest_port        1196
 260     option proto            udp
 261
 262
 263 config redirect
 264     option src              wan
 265     option src_dport        80
 266     option dest             lan
 267     option dest_ip          $l.8
 268     option proto            tcp
 269 config rule
 270     option src              wan
 271     option target           ACCEPT
 272     option dest_port        80
 273     option proto            tcp
 274
 275 config redirect
 276     option name syncthing
 277     option src              wan
 278     option src_dport        22001
 279     option dest_ip          $l.8
 280     option dest             lan
 281 config rule
 282     option src              wan
 283     option target           ACCEPT
 284     option dest_port        22001
 285
 286
 287
 288 EOF
 289
 290
 291
 292
 293 dnsmasq_restart=false
 294 mail_host=$(grep -F mail.iankelling.org /etc/hosts | awk '{print $1}')
 295 v cedit /etc/hosts <<EOF || dnsmasq_restart=true
 296 127.0.1.1 wrt
 297 $l.1 wrt
 298 $l.2 kd
 299 $l.3 frodo
 300 $l.4 htpc
 301 $l.5 x2
 302 $l.6 demohost
 303 #$l.7 faiserver
 304 $l.8 tp faiserver b8.nz
 305 $l.9 n5
 306 $l.10 so
 307 $l.12 fz
 308 72.14.176.105 li
 309 45.33.9.11 lj
 310 138.68.10.24 dopub
 311 # netns creation looks for next free subnet starting at 10.173, but I only
 312 # use one, and I would keep this one as the first created.
 313 10.173.0.2 transmission
 314 EOF
 315
 316 # if [[ $mail_host ]]; then
 317 #     sed -i '/^$mail_host/a mail.iankelling.org' /etc/hosts
 318 # fi
 319
 320
 321 # avoid using the dns servers that my isp tells me about.
 322 if [[ $(uci get dhcp.@dnsmasq[0].resolvfile 2>/dev/null) ]]; then
 323   # default is '/tmp/resolv.conf.auto', we switch to the dnsmasq default of
 324   # /etc/resolv.conf. not sure why I did this.
 325   v uci delete dhcp.@dnsmasq[0].resolvfile
 326   uci commit dhcp
 327   dnsmasq_restart=true
 328 fi
 329
 330 if [[ $(uci get dhcp.@dnsmasq[0].domain) != b8.nz ]]; then
 331   v uci set dhcp.@dnsmasq[0].domain=b8.nz
 332   uci commit dhcp
 333   dnsmasq_restart=true
 334 fi
 335 if [[ $(uci get dhcp.@dnsmasq[0].local) != b8.nz ]]; then
 336   v uci set dhcp.@dnsmasq[0].local=/b8.nz/
 337   uci commit dhcp
 338   dnsmasq_restart=true
 339 fi
 340
 341 if [[ $(uci get system.@system[0].hostname) != wrt ]]; then
 342   v uci set system.@system[0].hostname=wrt
 343   uci commit system
 344 fi
 345
 346
 347 if [[ $(uci get adblock.global.adb_enabled) != 1 ]]; then
 348   v uci set adblock.global.adb_enabled=1
 349   uci commit adblock
 350   /etc/init.d/adblock restart
 351 fi
 352 # https://github.com/openwrt/packages/tree/master/net/adblock/files
 353 cat >/etc/crontabs/root <<'EOF'
 354 0 06 * * *    /etc/init.d/adblock reload
 355 EOF
 356
 357
 358 # useful: http://wiki.openwrt.org/doc/howto/dhcp.dnsmasq
 359
 360 # sometimes /mnt/usb fails, cuz it's just a flash drive,
 361 # so make sure we have this dir or else dnsmasq will fail
 362 # to start.
 363 mkdir -p /mnt/usb/tftpboot
 364 v cedit /etc/dnsmasq.conf <<EOF || dnsmasq_restart=true
 365
 366 # https://ret2got.wordpress.com/2018/01/19/how-your-ethereum-can-be-stolen-using-dns-rebinding/
 367 stop-dns-rebind
 368
 369 # this says the ip of default gateway and dns server,
 370 # but I think they are unneded and default
 371 #dhcp-option=3,$l.1
 372 #dhcp-option=6,$l.1
 373
 374
 375
 376 # results from googling around dnsmasq optimizations
 377 # about 50k in memory. router has 62 megs.
 378 # in a browsing session, I probably won't ever do 5000 lookups
 379 # before the ttl expiration or whatever does expiration.
 380 cache-size=10000
 381
 382 # ask all servers, use the one which responds first.
 383 # http://ma.ttwagner.com/make-dns-fly-with-dnsmasq-all-servers/
 384 all-servers
 385
 386 # namebench benchmarks dns servers. google's dns was only
 387 # slightly less fast than some others, and I trust it more
 388 # to give accurate results, stay relatively fast, and
 389 # not do anythin too malicious, so just use that.
 390 # download namebench and run it like this:
 391 # for x in all regional isp global preferred nearby; do ./namebench.py -s \$x -c US -i firefox -m weighted -J 10 -w; echo \$x; hr;  done
 392 # google
 393 server=8.8.4.4
 394 server=8.8.8.8
 395 server=2001:4860:4860::8888
 396 server=2001:4860:4860::8844
 397
 398
 399 # to fixup existin ips, on the client you can do
 400 # sudo dhclient -r; sudo dhclient <interface-name>
 401
 402 # default dhcp range is 100-150
 403 # bottom port,  iPXE (PCI 03:00.0) in seabios boot menu
 404 dhcp-host=c8:60:00:31:6b:75,set:kd,$l.2,kd
 405 # top port, iPXE (PCI 04:00.0) in seabios boot menu
 406 #dhcp-host=c8:60:00:2b:15:07,set:kd,$l.2,kd
 407 dhcp-host=00:26:18:97:bb:16,set:frodo,$l.3,frodo
 408 dhcp-host=10:78:d2:da:29:22,set:htpc,$l.4,htpc
 409 dhcp-host=00:1f:16:16:39:24,set:x2,$l.5,x2
 410 #dhcp-host=00:c0:ca:27:e9:b2,set:x2w,$l.11,x2w
 411 #wireless interface
 412 # this is so fai can have an explicit name to use for testing,
 413 # or else any random machine which did a pxe boot would get
 414 # reformatted. The mac is from doing a virt-install, cancelling it,
 415 # and copying the generated mac, so it should be randomish.
 416 dhcp-host=52:54:00:9c:ef:ad,set:demohost,$l.6,demohost
 417 #dhcp-host=52:54:00:56:09:f9,set:faiserver,$l.7,faiserver
 418 dhcp-host=80:fa:5b:1c:6e:cf,set:tp,$l.8,tp
 419 # this is the ip it picks by default if dhcp fails,
 420 # so might as well use it.
 421 # hostname is the name it uses according to telnet
 422 dhcp-host=b4:75:0e:94:29:ca,set:switch9429ca,$l.251,switch9429ca
 423
 424 # template
 425 # dhcp-host=,$l.,
 426
 427 # Just leave the tftp server up even if we aren't doing pxe boot.
 428 # It has no sensitive info.
 429 enable-tftp=br-lan
 430 tftp-root=/mnt/usb/tftpboot
 431 EOF
 432
 433 if $dnsmasq_restart; then
 434   v /etc/init.d/dnsmasq restart
 435 fi
 436
 437 if $firewall_restart; then
 438   v /etc/init.d/firewall restart
 439 fi
 440
 441
 442 reboot=false
 443 if [[ $(uci get network.lan.ipaddr) != $l.1 ]]; then
 444   v uci set network.lan.ipaddr=$l.1
 445   uci commit network
 446   reboot=true
 447 fi
 448 if [[ $(uci get network.lan.netmask) != $mask ]]; then
 449   v uci set network.lan.netmask=$mask
 450   uci commit network
 451   reboot=true
 452 fi
 453
 454 if $reboot; then
 455   reboot
 456 fi
 457 exit 0