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

   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.
  26     f=(/tmp/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 cat >/usr/bin/arch-pxe-mount <<'EOFOUTER'
  47 #!/bin/bash
  48 # symlinks are collapsed for nfs mount points, so use a bind mount.
  49 # tried putting this in /etc/config/fstab,
  50 # then doig block mount, it didn't work. This doesn't persist across reboots,
  51 # todo: figure that out
  52 d=/run/archiso/bootmnt
  53 cat > /etc/fstab <<EOF
  54 /mnt/usb/tftpboot $d none bind 0 0
  55 EOF
  56 mount | grep $d &>/dev/null || mount $d
  57 /etc/init.d/nfsd restart
  58 EOFOUTER
  59 chmod +x /usr/bin/arch-pxe-mount
  60
  61 cat >.profile <<'EOF'
  62 # changing login shell emits spam on ssh single commands & scp
  63     # sed -i 's#/bin/ash$#/bin/bash#' /etc/passwd
  64 #https://dev.openwrt.org/ticket/13852
  65 [ "$PS1" = "" ] || {
  66        /bin/bash
  67        exit
  68 }
  69 EOF
  70 v pi kmod-usb-storage block-mount kmod-fs-ext4 nfs-kernel-server \
  71   tcpdump openvpn-openssl
  72
  73
  74
  75 sed -ri "s/option[[:space:]]*encryption[[:space:]]*'?none'?/option encryption psk2\n        option key  pictionary49/" /etc/config/wireless
  76 sed -i '/^[[:space:]]*option disabled/d' /etc/config/wireless
  77 v wifi
  78
  79
  80 v /etc/init.d/fstab enable ||:
  81
  82 # rebooting makes mounting work, but comparing lsmod,
  83 # i'm guessing this will too. todo, test it.
  84 # 255 == module already loaded
  85 for mod in scsi_mod sd_mod; do v modprobe $mod || [[ $? == 255 ]]; done
  86
  87 # for arch pxe. The default settings in the installer expect to find
  88 # the NFS at /run/archiso/bootmnt
  89 mkdir -p /run/archiso/bootmnt
  90
  91 # todo: at some later time, i found /mnt/usb not mounted, watch to see if
  92 # that is the case after running this or rebooting.
  93 # wiki says safe to do in case of fstab changes:
  94 cedit /etc/config/fstab <<'EOF' || { v block umount; v block mount; }
  95 config global automount
  96       option from_fstab 1
  97       option anon_mount 1
  98
  99 config global autoswap
 100       option from_fstab 1
 101       option anon_swap 1
 102
 103 config mount
 104       option target     /mnt/usb
 105       option device     /dev/sda2
 106       option fstype     ext4
 107       option options    rw,async,noatime,nodiratime
 108       option enabled    1
 109       option enabled_fsck 0
 110
 111 config swap
 112       option device     /dev/sda1
 113       option enabled    1
 114
 115 EOF
 116
 117
 118
 119 # exportfs -ra wont cut it when its the same path, but now a bind mount
 120 cedit /etc/exports <<'EOF' || v /etc/init.d/nfsd restart ||:
 121 /mnt/usb  192.168.1.0/255.255.255.0(rw,no_root_squash,insecure,sync,no_subtree_check)
 122 # for arch pxe
 123 /run/archiso/bootmnt    192.168.1.0/255.255.255.0(rw,no_root_squash,insecure,sync,no_subtree_check)
 124 EOF
 125
 126
 127 v /etc/init.d/portmap start
 128 v /etc/init.d/nfsd start
 129 v /etc/init.d/portmap enable
 130 v /etc/init.d/nfsd enable
 131
 132
 133
 134
 135
 136
 137 ######### uci example:#######
 138 # # https://wiki.openwrt.org/doc/uci
 139 # wan_index=$(uci show firewall | sed -rn 's/firewall\.@zone\[([0-9])+\]\.name=wan/\1/p')
 140 # wan="firewall.@zone[$wan_index]"
 141 # if [[ $(uci get firewall.@forwarding[0].dest) != $forward_dest ]]; then
 142 #     # default is wan
 143 #     v uci set firewall.@forwarding[0].dest=$forward_dest
 144 #     uci commit firewall
 145 #     firewall_restart=true
 146 # fi
 147
 148
 149
 150 ########## openvpn exampl
 151 ########## missing firewall settings for routing lan
 152 ########## traffic
 153 # v /etc/init.d/openvpn start
 154 # v /etc/init.d/openvpn enable
 155
 156 # # from https://wiki.openwrt.org/doc/uci/firewall
 157 # # todo: not sure if /etc/init.d/network needs restarting.
 158 # # I did, and I had to restart the vpn afterwards.
 159 # # This maps a uci interface to a real interface which is
 160 # # managed outside of uci.
 161 # v cedit /etc/config/network <<'EOF' ||:
 162 # config interface 'tun0'
 163 #         option ifname 'tun0'
 164 #         option proto 'none'
 165 # EOF
 166 # v cedit /etc/config/openvpn <<'EOF' || v /etc/init.d/openvpn restart
 167 # config openvpn my_client_config
 168 #         option enabled 1
 169 #         option config /etc/openvpn/client.conf
 170 # EOF
 171
 172
 173 v cedit /etc/config/network <<'EOF' || v /etc/init.d/network reload
 174 config 'route' 'transmission'
 175         option 'interface' 'lan'
 176         option 'target' '10.173.0.0'
 177         option 'netmask' '255.255.0.0'
 178         option 'gateway' '192.168.1.3'
 179 EOF
 180
 181 v cedit /etc/config/firewall <<'EOF' || firewall_restart=true
 182 config redirect
 183     option name ssh
 184     option src              wan
 185     option src_dport        22
 186     option dest_ip          192.168.1.2
 187     option dest             lan
 188 config rule
 189     option src              wan
 190     option target           ACCEPT
 191     option dest_port        22
 192
 193 config redirect
 194     option name sshalt
 195     option src              wan
 196     option src_dport        2222
 197     option dest_port        22
 198     option dest_ip          192.168.1.3
 199     option dest             lan
 200 config rule
 201     option src              wan
 202     option target           ACCEPT
 203     option dest_port        2222
 204
 205 config redirect
 206     option src              wan
 207     option src_dport        443
 208     option dest             lan
 209     option dest_ip          192.168.1.2
 210     option proto            tcp
 211 config rule
 212     option src              wan
 213     option target           ACCEPT
 214     option dest_port        443
 215     option proto            tcp
 216
 217 config redirect
 218     option src              wan
 219     option src_dport        1196
 220     option dest             lan
 221     option dest_ip          192.168.1.2
 222     option proto            udp
 223 config rule
 224     option src              wan
 225     option target           ACCEPT
 226     option dest_port        1196
 227     option proto            udp
 228
 229
 230 config redirect
 231     option src              wan
 232     option src_dport        80
 233     option dest             lan
 234     option dest_ip          192.168.1.2
 235     option proto            tcp
 236 config rule
 237     option src              wan
 238     option target           ACCEPT
 239     option dest_port        80
 240     option proto            tcp
 241
 242 config redirect
 243     option name syncthing
 244     option src              wan
 245     option src_dport        22001
 246     option dest_ip          192.168.1.2
 247     option dest             lan
 248 config rule
 249     option src              wan
 250     option target           ACCEPT
 251     option dest_port        22001
 252
 253
 254
 255 EOF
 256
 257
 258
 259
 260 dnsmasq_restart=false
 261 v cedit /etc/hosts <<EOF || dnsmasq_restart=true
 262 127.0.1.1 wrt
 263 192.168.1.1 wrt
 264 192.168.1.2 treetowl b8.nz faiserver
 265 192.168.1.3 frodo
 266 192.168.1.4 htpc
 267 192.168.1.5 x2
 268 192.168.1.6 demohost
 269 #192.168.1.7 faiserver
 270 192.168.1.8 tp
 271 192.168.1.9 n5
 272 72.14.176.105 li
 273 45.33.9.11 lj
 274 138.68.10.24 dopub
 275 # netns creation looks for next free subnet starting at 10.173, but I only
 276 # use one, and I would keep this one as the first created.
 277 10.173.0.2 transmission
 278 EOF
 279
 280
 281 # avoid using the dns servers that my isp tells me about.
 282 if [[ $(uci get dhcp.@dnsmasq[0].resolvfile) ]]; then
 283     # default is '/tmp/resolv.conf.auto', we switch to the dnsmasq default of
 284     # /etc/resolv.conf. not sure why I did this.
 285     v uci delete dhcp.@dnsmasq[0].resolvfile
 286     uci commit dhcp
 287     dnsmasq_restart=true
 288 fi
 289
 290 if [[ $(uci get dhcp.@dnsmasq[0].domain) != b8.nz ]]; then
 291     v uci set dhcp.@dnsmasq[0].domain=b8.nz
 292     uci commit dhcp
 293     dnsmasq_restart=true
 294 fi
 295 if [[ $(uci get dhcp.@dnsmasq[0].local) != b8.nz ]]; then
 296     v uci set dhcp.@dnsmasq[0].local=/b8.nz/
 297     uci commit dhcp
 298     dnsmasq_restart=true
 299 fi
 300
 301 if [[ $(uci get system.@system[0].hostname) != wrt ]]; then
 302     v uci set system.@system[0].hostname=wrt
 303     uci commit system
 304 fi
 305
 306
 307 # useful: http://wiki.openwrt.org/doc/howto/dhcp.dnsmasq
 308
 309 # sometimes /mnt/usb fails, cuz it's just a flash drive,
 310 # so make sure we have this dir or else dnsmasq will fail
 311 # to start.
 312 mkdir -p /mnt/usb/tftpboot
 313 v cedit /etc/dnsmasq.conf <<'EOF' || dnsmasq_restart=true
 314
 315 ############ updating dns servers ###################3
 316
 317
 318 # this says the ip of default gateway and dns server,
 319 # but I think they are unneded and default
 320 #dhcp-option=3,192.168.1.1
 321 #dhcp-option=6,192.168.1.1
 322
 323
 324
 325 # results from googling around dnsmasq optimizations
 326 # about 50k in memory. router has 62 megs.
 327 # in a browsing session, I probably won't ever do 5000 lookups
 328 # before the ttl expiration or whatever does expiration.
 329 cache-size=10000
 330
 331 # ask all servers, use the one which responds first.
 332 # http://ma.ttwagner.com/make-dns-fly-with-dnsmasq-all-servers/
 333 all-servers
 334
 335 # namebench benchmarks dns servers. google's dns was only
 336 # slightly less fast than some others, and I trust it more
 337 # to give accurate results, stay relatively fast, and
 338 # not do anythin too malicious, so just use that.
 339 # download namebench and run it like this:
 340 # 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
 341 # google
 342 server=8.8.4.4
 343 server=8.8.8.8
 344 server=2001:4860:4860::8888
 345 server=2001:4860:4860::8844
 346
 347
 348 # to fixup existin ips, on the client you can do
 349 # sudo dhclient -r; sudo dhclient <interface-name>
 350
 351 # default dhcp range is 100-150
 352 dhcp-host=f4:6d:04:02:ed:66,set:treetowl,192.168.1.2,treetowl
 353 dhcp-host=00:26:18:97:bb:16,set:frodo,192.168.1.3,frodo
 354 dhcp-host=10:78:d2:da:29:22,set:htpc,192.168.1.4,htpc
 355 dhcp-host=00:1f:16:16:39:24,set:x2,192.168.1.5,x2
 356 # this is so fai can have an explicit name to use for testing,
 357 # or else any random machine which did a pxe boot would get
 358 # reformatted. The mac is from doing a virt-install, cancelling it,
 359 # and copying the generated mac, so it should be randomish.
 360 dhcp-host=52:54:00:9c:ef:ad,set:demohost,192.168.1.6,demohost
 361 #dhcp-host=52:54:00:56:09:f9,set:faiserver,192.168.1.7,faiserver
 362 dhcp-host=80:fa:5b:1c:6e:cf,set:tp,192.168.1.8,tp
 363 dhcp-host=c4:43:8f:f2:79:1f,set:n5,192.168.1.9,n5
 364 # this is the ip it picks by default if dhcp fails,
 365 # so might as well use it.
 366 # hostname is the name it uses according to telnet
 367 dhcp-host=b4:75:0e:94:29:ca,set:switch9429ca,192.168.1.251,switch9429ca
 368
 369
 370 # template
 371 # dhcp-host=,192.168.1.,
 372
 373 # Just leave the tftp server up even if we aren't doing pxe boot.
 374 # It has no sensitive info.
 375 enable-tftp=br-lan
 376 tftp-root=/mnt/usb/tftpboot
 377 EOF
 378
 379 if $dnsmasq_restart; then
 380     v /etc/init.d/dnsmasq restart
 381 fi
 382
 383 if $firewall_restart; then
 384     v /etc/init.d/firewall restart
 385 fi