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 pmirror() {
  23     # background: upgrading all packages is not recommended because it
  24     # doesn't go into the firmware. build new firmware if you want
  25     # lots of upgrades. I think /tmp/opkg-lists is a pre openwrt 14 location.
  26     f=(/tmp/opkg-lists/* /var/opkg-lists/*)
  27     if ! (( $(date -r $f +%s) + 60*60*24 > $(date +%s) )); then
  28         opkg update
  29     fi
  30 }
  31
  32 pi() {
  33     for x in "$@"; do
  34         if [[ ! $(opkg list-installed "$x") ]]; then
  35             pmirror
  36             opkg install "$@"
  37         fi
  38     done
  39 }
  40
  41 v() {
  42     printf "+ %s\n" "$*"
  43     "$@"
  44 }
  45
  46 ### network config
  47 ###
  48 l=10.0.0
  49 lan=10.0.0.0
  50 mask=255.255.0.0
  51
  52 cat >/usr/bin/arch-pxe-mount <<'EOFOUTER'
  53 #!/bin/bash
  54 # symlinks are collapsed for nfs mount points, so use a bind mount.
  55 # tried putting this in /etc/config/fstab,
  56 # then doig block mount, it didn't work. This doesn't persist across reboots,
  57 # todo: figure that out
  58 d=/run/archiso/bootmnt
  59 cat > /etc/fstab <<EOF
  60 /mnt/usb/tftpboot $d none bind 0 0
  61 EOF
  62 mount | grep $d &>/dev/null || mount $d
  63 /etc/init.d/nfsd restart
  64 EOFOUTER
  65 chmod +x /usr/bin/arch-pxe-mount
  66
  67 cat >.profile <<'EOF'
  68 # changing login shell emits spam on ssh single commands & scp
  69     # sed -i 's#/bin/ash$#/bin/bash#' /etc/passwd
  70 # https://github.com/openwrt/packages/issues/6137
  71 [ "$BASH_VERSION" != "" ] || exec /bin/bash -i
  72 EOF
  73 v pi kmod-usb-storage block-mount kmod-fs-ext4 nfs-kernel-server \
  74   tcpdump openvpn-openssl adblock
  75
  76
  77
  78 sed -ri "s/option[[:space:]]+encryption[[:space:]].*/option encryption psk2/;s/option[[:space:]]+key.*/option key pictionary49/" /etc/config/wireless
  79 sed -i '/^[[:space:]]*option disabled/d' /etc/config/wireless
  80 v wifi
  81
  82
  83 v /etc/init.d/fstab enable ||:
  84
  85 # rebooting makes mounting work, but comparing lsmod,
  86 # i'm guessing this will too. todo, test it.
  87 # 255 == module already loaded
  88 for mod in scsi_mod sd_mod; do v modprobe $mod || [[ $? == 255 ]]; done
  89
  90 # for arch pxe. The default settings in the installer expect to find
  91 # the NFS at /run/archiso/bootmnt
  92 mkdir -p /run/archiso/bootmnt
  93
  94 # todo: at some later time, i found /mnt/usb not mounted, watch to see if
  95 # that is the case after running this or rebooting.
  96 # wiki says safe to do in case of fstab changes:
  97
  98 ## ian: usb broke on old router. if that happens, can just comment this to disable problems
  99 echo | cedit /etc/config/fstab ||:
 100 cedit /etc/config/fstab <<'EOF' || { v block umount; v block mount; }
 101 config global automount
 102       option from_fstab 1
 103       option anon_mount 1
 104
 105 config mount
 106       option target     /mnt/usb
 107       option device     /dev/sda1
 108       option fstype     ext4
 109       option options    rw,async,noatime,nodiratime
 110       option enabled    1
 111 EOF
 112
 113
 114 # ian: disabled because afaik I don't need it, no benefit.
 115 # config global autoswap
 116 #       option from_fstab 1
 117 #       option anon_swap 1
 118
 119 # config swap
 120 #       option device   /dev/sda1
 121 #       option enabled  1
 122
 123
 124
 125
 126 # exportfs -ra wont cut it when its the same path, but now a bind mount
 127 cedit /etc/exports <<EOF || v /etc/init.d/nfsd restart ||:
 128 /mnt/usb  $lan/$netmask(rw,no_root_squash,insecure,sync,no_subtree_check)
 129 # for arch pxe
 130 /run/archiso/bootmnt    $lan/$netmask(rw,no_root_squash,insecure,sync,no_subtree_check)
 131 EOF
 132
 133
 134 v /etc/init.d/portmap start
 135 v /etc/init.d/nfsd start
 136 v /etc/init.d/portmap enable
 137 v /etc/init.d/nfsd enable
 138
 139
 140
 141
 142
 143
 144 ######### uci example:#######
 145 # # https://wiki.openwrt.org/doc/uci
 146 # wan_index=$(uci show firewall | sed -rn 's/firewall\.@zone\[([0-9])+\]\.name=wan/\1/p')
 147 # wan="firewall.@zone[$wan_index]"
 148 # if [[ $(uci get firewall.@forwarding[0].dest) != $forward_dest ]]; then
 149 #     # default is wan
 150 #     v uci set firewall.@forwarding[0].dest=$forward_dest
 151 #     uci commit firewall
 152 #     firewall_restart=true
 153 # fi
 154
 155
 156
 157 ########## openvpn exampl
 158 ########## missing firewall settings for routing lan
 159 ########## traffic
 160 # v /etc/init.d/openvpn start
 161 # v /etc/init.d/openvpn enable
 162
 163 # # from https://wiki.openwrt.org/doc/uci/firewall
 164 # # todo: not sure if /etc/init.d/network needs restarting.
 165 # # I did, and I had to restart the vpn afterwards.
 166 # # This maps a uci interface to a real interface which is
 167 # # managed outside of uci.
 168 # v cedit /etc/config/network <<'EOF' ||:
 169 # config interface 'tun0'
 170 #         option ifname 'tun0'
 171 #         option proto 'none'
 172 # EOF
 173 # v cedit /etc/config/openvpn <<'EOF' || v /etc/init.d/openvpn restart
 174 # config openvpn my_client_config
 175 #         option enabled 1
 176 #         option config /etc/openvpn/client.conf
 177 # EOF
 178
 179
 180 v cedit /etc/config/network <<EOF || v /etc/init.d/network reload
 181 config 'route' 'transmission'
 182         option 'interface' 'lan'
 183         option 'target' '10.173.0.0'
 184         option 'netmask' '255.255.0.0'
 185         option 'gateway' '$l.3'
 186 EOF
 187
 188 v cedit /etc/config/firewall <<EOF || firewall_restart=true
 189 config redirect
 190     option name ssh
 191     option src              wan
 192     option src_dport        22
 193     option dest_ip          $l.8
 194     option dest             lan
 195 config rule
 196     option src              wan
 197     option target           ACCEPT
 198     option dest_port        22
 199
 200 config redirect
 201     option name sshalt
 202     option src              wan
 203     option src_dport        2222
 204     option dest_port        22
 205     option dest_ip          $l.3
 206     option dest             lan
 207 config rule
 208     option src              wan
 209     option target           ACCEPT
 210     option dest_port        2222
 211
 212 config redirect
 213     option src              wan
 214     option src_dport        443
 215     option dest             lan
 216     option dest_ip          $l.8
 217     option proto            tcp
 218 config rule
 219     option src              wan
 220     option target           ACCEPT
 221     option dest_port        443
 222     option proto            tcp
 223
 224 config redirect
 225     option src              wan
 226     option src_dport        1196
 227     option dest             lan
 228     option dest_ip          $l.8
 229     option proto            udp
 230 config rule
 231     option src              wan
 232     option target           ACCEPT
 233     option dest_port        1196
 234     option proto            udp
 235
 236
 237 config redirect
 238     option src              wan
 239     option src_dport        80
 240     option dest             lan
 241     option dest_ip          $l.8
 242     option proto            tcp
 243 config rule
 244     option src              wan
 245     option target           ACCEPT
 246     option dest_port        80
 247     option proto            tcp
 248
 249 config redirect
 250     option name syncthing
 251     option src              wan
 252     option src_dport        22001
 253     option dest_ip          $l.8
 254     option dest             lan
 255 config rule
 256     option src              wan
 257     option target           ACCEPT
 258     option dest_port        22001
 259
 260
 261
 262 EOF
 263
 264
 265
 266
 267 dnsmasq_restart=false
 268 mail_host=$(grep -F mail.iankelling.org /etc/hosts | awk '{print $1}')
 269 v cedit /etc/hosts <<EOF || dnsmasq_restart=true
 270 127.0.1.1 wrt
 271 $l.1 wrt
 272 $l.2 kd
 273 $l.3 frodo
 274 $l.4 htpc
 275 $l.5 x2
 276 $l.6 demohost
 277 #$l.7 faiserver
 278 $l.8 tp faiserver b8.nz
 279 $l.9 n5
 280 $l.10 so
 281 $l.12 fz
 282 72.14.176.105 li
 283 45.33.9.11 lj
 284 138.68.10.24 dopub
 285 # netns creation looks for next free subnet starting at 10.173, but I only
 286 # use one, and I would keep this one as the first created.
 287 10.173.0.2 transmission
 288 EOF
 289
 290 # if [[ $mail_host ]]; then
 291 #     sed -i '/^$mail_host/a mail.iankelling.org' /etc/hosts
 292 # fi
 293
 294
 295 # avoid using the dns servers that my isp tells me about.
 296 if [[ $(uci get dhcp.@dnsmasq[0].resolvfile 2>/dev/null) ]]; then
 297     # default is '/tmp/resolv.conf.auto', we switch to the dnsmasq default of
 298     # /etc/resolv.conf. not sure why I did this.
 299     v uci delete dhcp.@dnsmasq[0].resolvfile
 300     uci commit dhcp
 301     dnsmasq_restart=true
 302 fi
 303
 304 if [[ $(uci get dhcp.@dnsmasq[0].domain) != b8.nz ]]; then
 305     v uci set dhcp.@dnsmasq[0].domain=b8.nz
 306     uci commit dhcp
 307     dnsmasq_restart=true
 308 fi
 309 if [[ $(uci get dhcp.@dnsmasq[0].local) != b8.nz ]]; then
 310     v uci set dhcp.@dnsmasq[0].local=/b8.nz/
 311     uci commit dhcp
 312     dnsmasq_restart=true
 313 fi
 314
 315 if [[ $(uci get system.@system[0].hostname) != wrt ]]; then
 316     v uci set system.@system[0].hostname=wrt
 317     uci commit system
 318 fi
 319
 320
 321 if [[ $(uci get adblock.global.adb_enabled) != 1 ]]; then
 322   v uci set adblock.global.adb_enabled=1
 323   uci commit adblock
 324   /etc/init.d/adblock restart
 325 fi
 326 # https://github.com/openwrt/packages/tree/master/net/adblock/files
 327 cat >/etc/crontabs/root <<'EOF'
 328 0 06 * * *    /etc/init.d/adblock reload
 329 EOF
 330
 331
 332 # useful: http://wiki.openwrt.org/doc/howto/dhcp.dnsmasq
 333
 334 # sometimes /mnt/usb fails, cuz it's just a flash drive,
 335 # so make sure we have this dir or else dnsmasq will fail
 336 # to start.
 337 mkdir -p /mnt/usb/tftpboot
 338 v cedit /etc/dnsmasq.conf <<EOF || dnsmasq_restart=true
 339
 340 # https://ret2got.wordpress.com/2018/01/19/how-your-ethereum-can-be-stolen-using-dns-rebinding/
 341 stop-dns-rebind
 342
 343 # this says the ip of default gateway and dns server,
 344 # but I think they are unneded and default
 345 #dhcp-option=3,$l.1
 346 #dhcp-option=6,$l.1
 347
 348
 349
 350 # results from googling around dnsmasq optimizations
 351 # about 50k in memory. router has 62 megs.
 352 # in a browsing session, I probably won't ever do 5000 lookups
 353 # before the ttl expiration or whatever does expiration.
 354 cache-size=10000
 355
 356 # ask all servers, use the one which responds first.
 357 # http://ma.ttwagner.com/make-dns-fly-with-dnsmasq-all-servers/
 358 all-servers
 359
 360 # namebench benchmarks dns servers. google's dns was only
 361 # slightly less fast than some others, and I trust it more
 362 # to give accurate results, stay relatively fast, and
 363 # not do anythin too malicious, so just use that.
 364 # download namebench and run it like this:
 365 # for x in all regional isp global preferred nearby; do ./namebench.py -s \$x -c US -i firefox -m weighted -J 10 -w; echo \$x; hr;  done
 366 # google
 367 server=8.8.4.4
 368 server=8.8.8.8
 369 server=2001:4860:4860::8888
 370 server=2001:4860:4860::8844
 371
 372
 373 # to fixup existin ips, on the client you can do
 374 # sudo dhclient -r; sudo dhclient <interface-name>
 375
 376 # default dhcp range is 100-150
 377 # bottom port,  iPXE (PCI 03:00.0) in seabios boot menu
 378 dhcp-host=c8:60:00:31:6b:75,set:kd,$l.2,kd
 379 # top port, iPXE (PCI 04:00.0) in seabios boot menu
 380 #dhcp-host=c8:60:00:2b:15:07,set:kd,$l.2,kd
 381 dhcp-host=00:26:18:97:bb:16,set:frodo,$l.3,frodo
 382 dhcp-host=10:78:d2:da:29:22,set:htpc,$l.4,htpc
 383 dhcp-host=00:1f:16:16:39:24,set:x2,$l.5,x2
 384 #dhcp-host=00:c0:ca:27:e9:b2,set:x2w,$l.11,x2w
 385 #wireless interface
 386 # this is so fai can have an explicit name to use for testing,
 387 # or else any random machine which did a pxe boot would get
 388 # reformatted. The mac is from doing a virt-install, cancelling it,
 389 # and copying the generated mac, so it should be randomish.
 390 dhcp-host=52:54:00:9c:ef:ad,set:demohost,$l.6,demohost
 391 #dhcp-host=52:54:00:56:09:f9,set:faiserver,$l.7,faiserver
 392 dhcp-host=80:fa:5b:1c:6e:cf,set:tp,$l.8,tp
 393 # this is the ip it picks by default if dhcp fails,
 394 # so might as well use it.
 395 # hostname is the name it uses according to telnet
 396 dhcp-host=b4:75:0e:94:29:ca,set:switch9429ca,$l.251,switch9429ca
 397
 398 # template
 399 # dhcp-host=,$l.,
 400
 401 # Just leave the tftp server up even if we aren't doing pxe boot.
 402 # It has no sensitive info.
 403 enable-tftp=br-lan
 404 tftp-root=/mnt/usb/tftpboot
 405 EOF
 406
 407 if $dnsmasq_restart; then
 408     v /etc/init.d/dnsmasq restart
 409 fi
 410
 411 if $firewall_restart; then
 412     v /etc/init.d/firewall restart
 413 fi