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 # ssh
  22
  23 pmirror() {
  24     # background: upgrading all packages is not recommended because it
  25     # doesn't go into the firmware. build new firmware if you want
  26     # lots of upgrades.
  27     f=(/tmp/opkg-lists/*)
  28     if ! (( $(date -r $f +%s) + 60*60*24 > $(date +%s) )); then
  29         opkg update
  30     fi
  31 }
  32
  33 pi() {
  34     for x in "$@"; do
  35         if [[ ! $(opkg list-installed "$x") ]]; then
  36             pmirror
  37             opkg install "$@"
  38         fi
  39     done
  40 }
  41
  42 v() {
  43     printf "+ %s\n" "$*"
  44     "$@"
  45 }
  46
  47 cat >/usr/bin/arch-pxe-mount <<'EOFOUTER'
  48 #!/bin/bash
  49 # symlinks are collapsed for nfs mount points, so use a bind mount.
  50 # tried putting this in /etc/config/fstab,
  51 # then doig block mount, it didn't work. This doesn't persist across reboots,
  52 # todo: figure that out
  53 d=/run/archiso/bootmnt
  54 cat > /etc/fstab <<EOF
  55 /mnt/usb/tftpboot $d none bind 0 0
  56 EOF
  57 mount | grep $d &>/dev/null || mount $d
  58 /etc/init.d/nfsd restart
  59 EOFOUTER
  60 chmod +x /usr/bin/arch-pxe-mount
  61
  62 cat >.profile <<'EOF'
  63 # changing login shell emits spam on ssh single commands & scp
  64     # sed -i 's#/bin/ash$#/bin/bash#' /etc/passwd
  65 #https://dev.openwrt.org/ticket/13852
  66 [ "$PS1" = "" ] || {
  67        /bin/bash
  68        exit
  69 }
  70 EOF
  71 v pi kmod-usb-storage block-mount kmod-fs-ext4 nfs-kernel-server \
  72   tcpdump openvpn-openssl
  73
  74
  75
  76 sed -ri "s/option[[:space:]]*encryption[[:space:]]*'?none'?/option encryption psk2\n        option key  pictionary49/" /etc/config/wireless
  77 sed -i '/^[[:space:]]*option disabled/d' /etc/config/wireless
  78 v wifi
  79
  80
  81 v /etc/init.d/fstab enable ||:
  82
  83 # rebooting makes mounting work, but comparing lsmod,
  84 # i'm guessing this will too. todo, test it.
  85 # 255 == module already loaded
  86 for mod in scsi_mod sd_mod; do v modprobe $mod || [[ $? == 255 ]]; done
  87
  88 # for arch pxe. The default settings in the installer expect to find
  89 # the NFS at /run/archiso/bootmnt
  90 mkdir -p /run/archiso/bootmnt
  91
  92 # todo: at some later time, i found /mnt/usb not mounted, watch to see if
  93 # that is the case after running this or rebooting.
  94 # wiki says safe to do in case of fstab changes:
  95 cedit /etc/config/fstab <<'EOF' || { v block umount; v block mount; }
  96 config global automount
  97       option from_fstab 1
  98       option anon_mount 1
  99
 100 config global autoswap
 101       option from_fstab 1
 102       option anon_swap 1
 103
 104 config mount
 105       option target     /mnt/usb
 106       option device     /dev/sda2
 107       option fstype     ext4
 108       option options    rw,async,noatime,nodiratime
 109       option enabled    1
 110       option enabled_fsck 0
 111
 112 config swap
 113       option device     /dev/sda1
 114       option enabled    1
 115
 116 EOF
 117
 118
 119
 120 # exportfs -ra wont cut it when its the same path, but now a bind mount
 121 cedit /etc/exports <<'EOF' || v /etc/init.d/nfsd restart ||:
 122 /mnt/usb  192.168.1.0/255.255.255.0(rw,no_root_squash,insecure,sync,no_subtree_check)
 123 # for arch pxe
 124 /run/archiso/bootmnt    192.168.1.0/255.255.255.0(rw,no_root_squash,insecure,sync,no_subtree_check)
 125 EOF
 126
 127
 128 v /etc/init.d/portmap start
 129 v /etc/init.d/nfsd start
 130 v /etc/init.d/portmap enable
 131 v /etc/init.d/nfsd enable
 132
 133
 134
 135
 136
 137
 138 ######### uci example:#######
 139 # # https://wiki.openwrt.org/doc/uci
 140 # wan_index=$(uci show firewall | sed -rn 's/firewall\.@zone\[([0-9])+\]\.name=wan/\1/p')
 141 # wan="firewall.@zone[$wan_index]"
 142 # if [[ $(uci get firewall.@forwarding[0].dest) != $forward_dest ]]; then
 143 #     # default is wan
 144 #     v uci set firewall.@forwarding[0].dest=$forward_dest
 145 #     uci commit firewall
 146 #     firewall_restart=true
 147 # fi
 148
 149
 150
 151 ########## openvpn exampl
 152 ########## missing firewall settings for routing lan
 153 ########## traffic
 154 # v /etc/init.d/openvpn start
 155 # v /etc/init.d/openvpn enable
 156
 157 # # from https://wiki.openwrt.org/doc/uci/firewall
 158 # # todo: not sure if /etc/init.d/network needs restarting.
 159 # # I did, and I had to restart the vpn afterwards.
 160 # # This maps a uci interface to a real interface which is
 161 # # managed outside of uci.
 162 # v cedit /etc/config/network <<'EOF' ||:
 163 # config interface 'tun0'
 164 #         option ifname 'tun0'
 165 #         option proto 'none'
 166 # EOF
 167 # v cedit /etc/config/openvpn <<'EOF' || v /etc/init.d/openvpn restart
 168 # config openvpn my_client_config
 169 #         option enabled 1
 170 #         option config /etc/openvpn/client.conf
 171 # EOF
 172
 173
 174 v cedit /etc/config/network <<'EOF' || v /etc/init.d/network reload
 175 config 'route' 'transmission'
 176         option 'interface' 'lan'
 177         option 'target' '10.173.0.0'
 178         option 'netmask' '255.255.0.0'
 179         option 'gateway' '192.168.1.2'
 180 EOF
 181
 182 v cedit /etc/config/firewall <<'EOF' || firewall_restart=true
 183 config redirect
 184     option name ssh
 185     option src              wan
 186     option src_dport        22
 187     option dest_ip          192.168.1.2
 188     option dest             lan
 189 config rule
 190     option src              wan
 191     option target           ACCEPT
 192     option dest_port        22
 193
 194 config redirect
 195     option name sshalt
 196     option src              wan
 197     option src_dport        2222
 198     option dest_port        22
 199     option dest_ip          192.168.1.3
 200     option dest             lan
 201 config rule
 202     option src              wan
 203     option target           ACCEPT
 204     option dest_port        2222
 205
 206 config redirect
 207     option src              wan
 208     option src_dport        443
 209     option dest             lan
 210     option dest_ip          192.168.1.2
 211     option proto            tcp
 212 config rule
 213     option src              wan
 214     option target           ACCEPT
 215     option dest_port        443
 216     option proto            tcp
 217
 218 config redirect
 219     option src              wan
 220     option src_dport        80
 221     option dest             lan
 222     option dest_ip          192.168.1.2
 223     option proto            tcp
 224 config rule
 225     option src              wan
 226     option target           ACCEPT
 227     option dest_port        80
 228     option proto            tcp
 229
 230 config redirect
 231     option name syncthing
 232     option src              wan
 233     option src_dport        22001
 234     option dest_ip          192.168.1.2
 235     option dest             lan
 236 config rule
 237     option src              wan
 238     option target           ACCEPT
 239     option dest_port        22001
 240
 241 #### begin rules for nfs ####
 242 # https://serverfault.com/questions/377170/which-ports-do-i-need-to-open-in-the-firewall-to-use-nfs
 243 # https://wiki.debian.org/SecuringNFS
 244 # I had no /etc/default/quota, or any process named quota anything,
 245 # so, assumed that was unneeded. seems to work.
 246 config redirect
 247     option src              wan
 248     option src_dport        111
 249     option dest_ip          192.168.1.2
 250     option dest             lan
 251 config rule
 252     option src              wan
 253     option target           ACCEPT
 254     option dest_port        111
 255 config redirect
 256     option src              wan
 257     option src_dport        2049
 258     option dest_ip          192.168.1.2
 259     option dest             lan
 260 config rule
 261     option src              wan
 262     option target           ACCEPT
 263     option dest_port        2049
 264 config redirect
 265     option src              wan
 266     option src_dport        32764
 267     option dest_ip          192.168.1.2
 268     option dest             lan
 269 config rule
 270     option src              wan
 271     option target           ACCEPT
 272     option dest_port        32764
 273 config redirect
 274     option src              wan
 275     option src_dport        32765
 276     option dest_ip          192.168.1.2
 277     option dest             lan
 278 config rule
 279     option src              wan
 280     option target           ACCEPT
 281     option dest_port        32765
 282 config redirect
 283     option src              wan
 284     option src_dport        32766
 285     option dest_ip          192.168.1.2
 286     option dest             lan
 287 config rule
 288     option src              wan
 289     option target           ACCEPT
 290     option dest_port        32766
 291 config redirect
 292     option src              wan
 293     option src_dport        32767
 294     option dest_ip          192.168.1.2
 295     option dest             lan
 296 config rule
 297     option src              wan
 298     option target           ACCEPT
 299     option dest_port        32767
 300 config redirect
 301     option src              wan
 302     option src_dport        32768
 303     option dest_ip          192.168.1.2
 304     option dest             lan
 305 config rule
 306     option src              wan
 307     option target           ACCEPT
 308     option dest_port        32768
 309 #### end rules for nfs ####
 310
 311
 312 config redirect
 313     option name mariadb
 314     option src              wan
 315     option src_dport        3306
 316     option dest             lan
 317     option dest_ip          192.168.1.2
 318     option proto            tcp
 319 config rule
 320     option src              wan
 321     option target           ACCEPT
 322     option dest_port        3306
 323     option proto            tcp
 324
 325
 326 EOF
 327
 328
 329
 330
 331 dnsmasq_restart=false
 332 v cedit /etc/hosts <<EOF || dnsmasq_restart=true
 333 192.168.1.1 wrt
 334 192.168.1.2 treetowl $HOME_DOMAIN faiserver
 335 192.168.1.3 frodo
 336 192.168.1.4 htpc
 337 192.168.1.5 x2
 338 192.168.1.6 demohost
 339 #192.168.1.7 faiserver
 340 192.168.1.8 tp
 341 192.168.1.9 n5
 342 72.14.176.105 li
 343 45.33.9.11 lj
 344 138.68.10.24 dopub
 345 # netns creation looks for next free subnet starting at 10.173, but I only
 346 # use one, and I would keep this one as the first created.
 347 10.173.0.2 transmission
 348 EOF
 349
 350
 351 # avoid using the dns servers that my isp tells me about.
 352 if [[ $(uci get dhcp.@dnsmasq[0].resolvfile) ]]; then
 353     # default is '/tmp/resolv.conf.auto', we switch to the dnsmasq default of
 354     # /etc/resolv.conf
 355     v uci delete dhcp.@dnsmasq[0].resolvfile
 356     uci commit dhcp
 357     dnsmasq_restart=true
 358 fi
 359
 360
 361 # useful: http://wiki.openwrt.org/doc/howto/dhcp.dnsmasq
 362
 363 # sometimes /mnt/usb fails, cuz it's just a flash drive,
 364 # so make sure we have this dir or else dnsmasq will fail
 365 # to start.
 366 mkdir -p /mnt/usb/tftpboot
 367 v cedit /etc/dnsmasq.conf <<'EOF' || dnsmasq_restart=true
 368
 369 ############ updating dns servers ###################3
 370
 371
 372 # this says the ip of default gateway and dns server,
 373 # but I think they are unneded and default
 374 #dhcp-option=3,192.168.1.1
 375 #dhcp-option=6,192.168.1.1
 376
 377
 378
 379 # results from googling around dnsmasq optimizations
 380 # about 50k in memory. router has 62 megs.
 381 # in a browsing session, I probably won't ever do 5000 lookups
 382 # before the ttl expiration or whatever does expiration.
 383 cache-size=10000
 384
 385 # ask all servers, use the one which responds first.
 386 # http://ma.ttwagner.com/make-dns-fly-with-dnsmasq-all-servers/
 387 all-servers
 388
 389 # namebench benchmarks dns servers. google's dns was only
 390 # slightly less fast than some others, and I trust it more
 391 # to give accurate results, stay relatively fast, and
 392 # not do anythin too malicious, so just use that.
 393 # download namebench and run it like this:
 394 # 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
 395 # google
 396 server=8.8.4.4
 397 server=8.8.8.8
 398 server=2001:4860:4860::8888
 399 server=2001:4860:4860::8844
 400
 401
 402 # to fixup existin ips, on the client you can do
 403 # sudo dhclient -r; sudo dhclient <interface-name>
 404
 405 # default dhcp range is 100-150
 406 dhcp-host=f4:6d:04:02:ed:66,set:treetowl,192.168.1.2,treetowl
 407 dhcp-host=00:26:18:97:bb:16,set:frodo,192.168.1.3,frodo
 408 dhcp-host=10:78:d2:da:29:22,set:htpc,192.168.1.4,htpc
 409 dhcp-host=00:1f:16:16:39:24,set:x2,192.168.1.5,x2
 410 # this is so fai can have an explicit name to use for testing,
 411 # or else any random machine which did a pxe boot would get
 412 # reformatted. The mac is from doing a virt-install, cancelling it,
 413 # and copying the generated mac, so it should be randomish.
 414 dhcp-host=52:54:00:9c:ef:ad,set:demohost,192.168.1.6,demohost
 415 #dhcp-host=52:54:00:56:09:f9,set:faiserver,192.168.1.7,faiserver
 416 dhcp-host=80:fa:5b:1c:6e:cf,set:tp,192.168.1.8,tp
 417 dhcp-host=c4:43:8f:f2:79:1f,set:n5,192.168.1.9,n5
 418 # this is the ip it picks by default if dhcp fails,
 419 # so might as well use it.
 420 # hostname is the name it uses according to telnet
 421 dhcp-host=b4:75:0e:94:29:ca,set:switch9429ca,192.168.1.251,switch9429ca
 422
 423
 424 # template
 425 # dhcp-host=,192.168.1.,
 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