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/archlike-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 doing block mount, it didn't work. This doesn't persist across reboots,
  59 # todo: figure that out
  60 rm -f /etc/fstab
  61 for d in /run/{arch,parabola}iso/bootmnt; do
  62 cat >>/etc/fstab <<EOF
  63 /mnt/usb/tftpboot $d none bind 0 0
  64 EOF
  65 mount | grep $d &>/dev/null || mount $d
  66 done
  67 /etc/init.d/nfsd restart
  68 EOFOUTER
  69 chmod +x /usr/bin/archlike-pxe-mount
  70
  71 cat >.profile <<'EOF'
  72 # changing login shell emits spam on ssh single commands & scp
  73     # sed -i 's#/bin/ash$#/bin/bash#' /etc/passwd
  74 # https://github.com/openwrt/packages/issues/6137
  75 [ "$BASH_VERSION" != "" ] || exec /bin/bash -i
  76 EOF
  77 v pi kmod-usb-storage block-mount kmod-fs-ext4 nfs-kernel-server \
  78   tcpdump openvpn-openssl adblock
  79
  80
  81
  82
  83
  84 v /etc/init.d/fstab enable ||:
  85
  86 # rebooting makes mounting work, but comparing lsmod,
  87 # i'm guessing this will too. todo, test it.
  88 # 255 == module already loaded
  89 for mod in scsi_mod sd_mod; do v modprobe $mod || [[ $? == 255 ]]; done
  90
  91 # for archlike pxe. The default settings in the installer expect to find
  92 # the NFS at one of these dirs
  93 mkdir -p /run/archiso/bootmnt
  94 mkdir -p /run/parabolaiso/bootmnt
  95
  96 # todo: at some later time, i found /mnt/usb not mounted, watch to see if
  97 # that is the case after running this or rebooting.
  98 # wiki says safe to do in case of fstab changes:
  99
 100 ## ian: usb broke on old router. if that happens, can just comment this to disable problems
 101 echo | cedit /etc/config/fstab ||:
 102 cedit /etc/config/fstab <<'EOF' || { v block umount; v block mount; }
 103 config global automount
 104       option from_fstab 1
 105       option anon_mount 1
 106
 107 config mount
 108       option target     /mnt/usb
 109       option device     /dev/sda1
 110       option fstype     ext4
 111       option options    rw,async,noatime,nodiratime
 112       option enabled    1
 113 EOF
 114
 115
 116 # ian: disabled because afaik I don't need it, no benefit.
 117 # config global autoswap
 118 #       option from_fstab 1
 119 #       option anon_swap 1
 120
 121 # config swap
 122 #       option device   /dev/sda1
 123 #       option enabled  1
 124
 125
 126
 127
 128 # exportfs -ra wont cut it when its the same path, but now a bind mount
 129 cedit /etc/exports <<EOF || v /etc/init.d/nfsd restart ||:
 130 /mnt/usb  $lan/$netmask(rw,no_root_squash,insecure,sync,no_subtree_check)
 131 # for arch pxe
 132 /run/archiso/bootmnt    $lan/$netmask(rw,no_root_squash,insecure,sync,no_subtree_check)
 133 /run/parabolaiso/bootmnt        $lan/$netmask(rw,no_root_squash,insecure,sync,no_subtree_check)
 134 EOF
 135
 136
 137 v /etc/init.d/portmap start
 138 v /etc/init.d/nfsd start
 139 v /etc/init.d/portmap enable
 140 v /etc/init.d/nfsd enable
 141
 142
 143
 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
 158
 159 wireless_restart=false
 160 key=pictionary49
 161 for x in 0 1; do
 162   if [[ $(uci get wireless.default_radio$x.ssid) != "$ssid" ]]; then
 163     v uci set wireless.default_radio$x.ssid="$ssid"
 164     wireless_restart=true
 165   fi
 166   if [[ $(uci get wireless.default_radio$x.key) != $key ]]; then
 167     v uci set wireless.default_radio$x.key=$key
 168     wireless_restart=true
 169   fi
 170   if [[ $(uci get wireless.default_radio$x.encryption) != psk2 ]]; then
 171     v uci set wireless.default_radio$x.encryption=psk2
 172     wireless_restart=true
 173   fi
 174   if [[ $(uci get wireless.default_radio$x.disabled 2>/dev/null) ]]; then
 175     v uci delete wireless.default_radio$x.disabled
 176     wireless_restart=true
 177   fi
 178 done
 179
 180 if $wireless_restart; then
 181   uci commit wireless
 182   v wifi
 183 fi
 184
 185
 186 ########## openvpn exampl
 187 ########## missing firewall settings for routing lan
 188 ########## traffic
 189 # v /etc/init.d/openvpn start
 190 # v /etc/init.d/openvpn enable
 191
 192 # # from https://wiki.openwrt.org/doc/uci/firewall
 193 # # todo: not sure if /etc/init.d/network needs restarting.
 194 # # I did, and I had to restart the vpn afterwards.
 195 # # This maps a uci interface to a real interface which is
 196 # # managed outside of uci.
 197 # v cedit /etc/config/network <<'EOF' ||:
 198 # config interface 'tun0'
 199 #         option ifname 'tun0'
 200 #         option proto 'none'
 201 # EOF
 202 # v cedit /etc/config/openvpn <<'EOF' || v /etc/init.d/openvpn restart
 203 # config openvpn my_client_config
 204 #         option enabled 1
 205 #         option config /etc/openvpn/client.conf
 206 # EOF
 207
 208
 209
 210 v cedit /etc/config/network <<EOF || v /etc/init.d/network reload
 211 config 'route' 'transmission'
 212         option 'interface' 'lan'
 213         option 'target' '10.173.0.0'
 214         option 'netmask' '255.255.0.0'
 215         option 'gateway' '$l.3'
 216 EOF
 217
 218 firewall_restart=false
 219 v cedit /etc/config/firewall <<EOF || firewall_restart=true
 220 config redirect
 221     option name ssh
 222     option src              wan
 223     option src_dport        22
 224     option dest_ip          $l.8
 225     option dest             lan
 226 config rule
 227     option src              wan
 228     option target           ACCEPT
 229     option dest_port        22
 230
 231 config redirect
 232     option name sshalt
 233     option src              wan
 234     option src_dport        2222
 235     option dest_port        22
 236     option dest_ip          $l.3
 237     option dest             lan
 238 config rule
 239     option src              wan
 240     option target           ACCEPT
 241     option dest_port        2222
 242
 243 config redirect
 244     option src              wan
 245     option src_dport        443
 246     option dest             lan
 247     option dest_ip          $l.8
 248     option proto            tcp
 249 config rule
 250     option src              wan
 251     option target           ACCEPT
 252     option dest_port        443
 253     option proto            tcp
 254
 255 config redirect
 256     option src              wan
 257     option src_dport        1196
 258     option dest             lan
 259     option dest_ip          $l.8
 260     option proto            udp
 261 config rule
 262     option src              wan
 263     option target           ACCEPT
 264     option dest_port        1196
 265     option proto            udp
 266
 267
 268 config redirect
 269     option src              wan
 270     option src_dport        80
 271     option dest             lan
 272     option dest_ip          $l.8
 273     option proto            tcp
 274 config rule
 275     option src              wan
 276     option target           ACCEPT
 277     option dest_port        80
 278     option proto            tcp
 279
 280 config redirect
 281     option name syncthing
 282     option src              wan
 283     option src_dport        22001
 284     option dest_ip          $l.8
 285     option dest             lan
 286 config rule
 287     option src              wan
 288     option target           ACCEPT
 289     option dest_port        22001
 290
 291
 292
 293 EOF
 294
 295
 296
 297
 298 dnsmasq_restart=false
 299 mail_host=$(grep -F mail.iankelling.org /etc/hosts | awk '{print $1}')
 300 v cedit /etc/hosts <<EOF || dnsmasq_restart=true
 301 127.0.1.1 wrt
 302 $l.1 wrt
 303 $l.2 kd
 304 $l.3 frodo
 305 $l.4 htpc
 306 $l.5 x2
 307 $l.6 demohost
 308 #$l.7 faiserver
 309 $l.8 tp faiserver b8.nz
 310 $l.9 n5
 311 $l.10 so
 312 $l.12 fz
 313 72.14.176.105 li
 314 45.33.9.11 lj
 315 138.68.10.24 dopub
 316 # netns creation looks for next free subnet starting at 10.173, but I only
 317 # use one, and I would keep this one as the first created.
 318 10.173.0.2 transmission
 319 EOF
 320
 321 # if [[ $mail_host ]]; then
 322 #     sed -i '/^$mail_host/a mail.iankelling.org' /etc/hosts
 323 # fi
 324
 325
 326 # avoid using the dns servers that my isp tells me about.
 327 if [[ $(uci get dhcp.@dnsmasq[0].resolvfile 2>/dev/null) ]]; then
 328   # default is '/tmp/resolv.conf.auto', we switch to the dnsmasq default of
 329   # /etc/resolv.conf. not sure why I did this.
 330   v uci delete dhcp.@dnsmasq[0].resolvfile
 331   uci commit dhcp
 332   dnsmasq_restart=true
 333 fi
 334
 335 if [[ $(uci get dhcp.@dnsmasq[0].domain) != b8.nz ]]; then
 336   v uci set dhcp.@dnsmasq[0].domain=b8.nz
 337   uci commit dhcp
 338   dnsmasq_restart=true
 339 fi
 340 if [[ $(uci get dhcp.@dnsmasq[0].local) != /b8.nz/ ]]; then
 341   v uci set dhcp.@dnsmasq[0].local=/b8.nz/
 342   uci commit dhcp
 343   dnsmasq_restart=true
 344 fi
 345
 346 if [[ $(uci get system.@system[0].hostname) != wrt ]]; then
 347   v uci set system.@system[0].hostname=wrt
 348   uci commit system
 349 fi
 350
 351
 352 if [[ $(uci get adblock.global.adb_enabled) != 1 ]]; then
 353   v uci set adblock.global.adb_enabled=1
 354   uci commit adblock
 355   /etc/init.d/adblock restart
 356 fi
 357 # https://github.com/openwrt/packages/tree/master/net/adblock/files
 358 cat >/etc/crontabs/root <<'EOF'
 359 0 06 * * *    /etc/init.d/adblock reload
 360 EOF
 361
 362
 363 # useful: http://wiki.openwrt.org/doc/howto/dhcp.dnsmasq
 364
 365 # sometimes /mnt/usb fails, cuz it's just a flash drive,
 366 # so make sure we have this dir or else dnsmasq will fail
 367 # to start.
 368 mkdir -p /mnt/usb/tftpboot
 369 v cedit /etc/dnsmasq.conf <<EOF || dnsmasq_restart=true
 370
 371 # https://ret2got.wordpress.com/2018/01/19/how-your-ethereum-can-be-stolen-using-dns-rebinding/
 372 stop-dns-rebind
 373
 374 # this says the ip of default gateway and dns server,
 375 # but I think they are unneded and default
 376 #dhcp-option=3,$l.1
 377 #dhcp-option=6,$l.1
 378
 379
 380
 381 # results from googling around dnsmasq optimizations
 382 # about 50k in memory. router has 62 megs.
 383 # in a browsing session, I probably won't ever do 5000 lookups
 384 # before the ttl expiration or whatever does expiration.
 385 cache-size=10000
 386
 387 # ask all servers, use the one which responds first.
 388 # http://ma.ttwagner.com/make-dns-fly-with-dnsmasq-all-servers/
 389 all-servers
 390
 391 # namebench benchmarks dns servers. google's dns was only
 392 # slightly less fast than some others, and I trust it more
 393 # to give accurate results, stay relatively fast, and
 394 # not do anythin too malicious, so just use that.
 395 # download namebench and run it like this:
 396 # for x in all regional isp global preferred nearby; do ./namebench.py -s \$x -c US -i firefox -m weighted -J 10 -w; echo \$x; hr;  done
 397 # google
 398 server=8.8.4.4
 399 server=8.8.8.8
 400 server=2001:4860:4860::8888
 401 server=2001:4860:4860::8844
 402
 403
 404 # to fixup existin ips, on the client you can do
 405 # sudo dhclient -r; sudo dhclient <interface-name>
 406
 407 # default dhcp range is 100-150
 408 # bottom port,  iPXE (PCI 03:00.0) in seabios boot menu
 409 dhcp-host=c8:60:00:31:6b:75,set:kd,$l.2,kd
 410 # top port, iPXE (PCI 04:00.0) in seabios boot menu
 411 #dhcp-host=c8:60:00:2b:15:07,set:kd,$l.2,kd
 412 dhcp-host=00:26:18:97:bb:16,set:frodo,$l.3,frodo
 413 dhcp-host=10:78:d2:da:29:22,set:htpc,$l.4,htpc
 414 dhcp-host=00:1f:16:16:39:24,set:x2,$l.5,x2
 415 #dhcp-host=00:c0:ca:27:e9:b2,set:x2w,$l.11,x2w
 416 #wireless interface
 417 # this is so fai can have an explicit name to use for testing,
 418 # or else any random machine which did a pxe boot would get
 419 # reformatted. The mac is from doing a virt-install, cancelling it,
 420 # and copying the generated mac, so it should be randomish.
 421 dhcp-host=52:54:00:9c:ef:ad,set:demohost,$l.6,demohost
 422 #dhcp-host=52:54:00:56:09:f9,set:faiserver,$l.7,faiserver
 423 dhcp-host=80:fa:5b:1c:6e:cf,set:tp,$l.8,tp
 424 # this is the ip it picks by default if dhcp fails,
 425 # so might as well use it.
 426 # hostname is the name it uses according to telnet
 427 dhcp-host=b4:75:0e:94:29:ca,set:switch9429ca,$l.251,switch9429ca
 428
 429 # template
 430 # dhcp-host=,$l.,
 431
 432 # Just leave the tftp server up even if we aren't doing pxe boot.
 433 # It has no sensitive info.
 434 enable-tftp=br-lan
 435 tftp-root=/mnt/usb/tftpboot
 436 EOF
 437
 438 if $dnsmasq_restart; then
 439   v /etc/init.d/dnsmasq restart
 440 fi
 441
 442 if $firewall_restart; then
 443   v /etc/init.d/firewall restart
 444 fi
 445
 446
 447 reboot=false
 448 if [[ $(uci get network.lan.ipaddr) != $l.1 ]]; then
 449   v uci set network.lan.ipaddr=$l.1
 450   uci commit network
 451   reboot=true
 452 fi
 453 if [[ $(uci get network.lan.netmask) != $mask ]]; then
 454   v uci set network.lan.netmask=$mask
 455   uci commit network
 456   reboot=true
 457 fi
 458
 459 if $reboot; then
 460   reboot
 461 fi
 462 exit 0