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 $?" >&2' ERR
  20
  21 # ssh
  22
  23 pmirror() {
  24     # background: upgrading all packages is not recommended because it
  25     # doesn't go into the firmware. build new firmware if you want
  26     # lots of upgrades.
  27     f=(/tmp/opkg-lists/*)
  28     f=${f[0]}
  29     if ! (( $(date -r $f +%s) + 60*60*24 > $(date +%s) )); then
  30         opkg update
  31     fi
  32 }
  33
  34 pi() {
  35     for x in "$@"; do
  36         if [[ ! $(opkg list-installed "$x") ]]; then
  37             pmirror
  38             opkg install "$@"
  39         fi
  40     done
  41 }
  42
  43 v() {
  44     printf "+ %s\n" "$*"
  45     "$@"
  46 }
  47
  48 cat >/usr/bin/arch-pxe-mount <<'EOFOUTER'
  49 #!/bin/bash
  50 # symlinks are collapsed for nfs mount points, so use a bind mount.
  51 # tried putting this in /etc/config/fstab,
  52 # then doig block mount, it didn't work. This doesn't persist across reboots,
  53 # todo: figure that out
  54 d=/run/archiso/bootmnt
  55 cat > /etc/fstab <<EOF
  56 /mnt/usb/tftpboot $d none bind 0 0
  57 EOF
  58 mount | grep $d &>/dev/null || mount $d
  59 /etc/init.d/nfsd restart
  60 EOFOUTER
  61 chmod +x /usr/bin/arch-pxe-mount
  62
  63 cat >.profile <<'EOF'
  64 # changing login shell emits spam on ssh single commands & scp
  65     # sed -i 's#/bin/ash$#/bin/bash#' /etc/passwd
  66 #https://dev.openwrt.org/ticket/13852
  67 [ "$PS1" = "" ] || {
  68        /bin/bash
  69        exit
  70 }
  71 EOF
  72 v pi kmod-usb-storage block-mount kmod-fs-ext4 nfs-kernel-server \
  73   tcpdump openvpn-openssl
  74
  75
  76
  77 sed -ri "s/option[[:space:]]*encryption[[:space:]]*'?none'?/option encryption psk2\n        option key  pictionary49/" /etc/config/wireless
  78 sed -i '/^[[:space:]]*option disabled/d' /etc/config/wireless
  79 v wifi
  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 || [[ $? == 255 ]]; done
  88
  89 # for arch pxe. The default settings in the installer expect to find
  90 # the NFS at /run/archiso/bootmnt
  91 mkdir -p /run/archiso/bootmnt
  92
  93 # todo: at some later time, i found /mnt/usb not mounted, watch to see if
  94 # that is the case after running this or rebooting.
  95 # wiki says safe to do in case of fstab changes:
  96 cedit /etc/config/fstab <<'EOF' || { v block umount; v block mount; }
  97 config global automount
  98       option from_fstab 1
  99       option anon_mount 1
 100
 101 config global autoswap
 102       option from_fstab 1
 103       option anon_swap 1
 104
 105 config mount
 106       option target     /mnt/usb
 107       option device     /dev/sda2
 108       option fstype     ext4
 109       option options    rw,async,noatime,nodiratime
 110       option enabled    1
 111       option enabled_fsck 0
 112
 113 config swap
 114       option device     /dev/sda1
 115       option enabled    1
 116
 117 EOF
 118
 119
 120
 121 # exportfs -ra wont cut it when its the same path, but now a bind mount
 122 cedit /etc/exports <<'EOF' || v /etc/init.d/nfsd restart ||:
 123 /mnt/usb  192.168.1.0/255.255.255.0(rw,no_root_squash,insecure,sync,no_subtree_check)
 124 # for arch pxe
 125 /run/archiso/bootmnt    192.168.1.0/255.255.255.0(rw,no_root_squash,insecure,sync,no_subtree_check)
 126 EOF
 127
 128
 129 v /etc/init.d/portmap start
 130 v /etc/init.d/nfsd start
 131 v /etc/init.d/portmap enable
 132 v /etc/init.d/nfsd enable
 133
 134
 135
 136
 137
 138
 139 ######### uci example:#######
 140 # # https://wiki.openwrt.org/doc/uci
 141 # wan_index=$(uci show firewall | sed -rn 's/firewall\.@zone\[([0-9])+\]\.name=wan/\1/p')
 142 # wan="firewall.@zone[$wan_index]"
 143 # if [[ $(uci get firewall.@forwarding[0].dest) != $forward_dest ]]; then
 144 #     # default is wan
 145 #     v uci set firewall.@forwarding[0].dest=$forward_dest
 146 #     uci commit firewall
 147 #     firewall_restart=true
 148 # fi
 149
 150
 151
 152 ########## openvpn exampl
 153 ########## missing firewall settings for routing lan
 154 ########## traffic
 155 # v /etc/init.d/openvpn start
 156 # v /etc/init.d/openvpn enable
 157
 158 # # from https://wiki.openwrt.org/doc/uci/firewall
 159 # # todo: not sure if /etc/init.d/network needs restarting.
 160 # # I did, and I had to restart the vpn afterwards.
 161 # # This maps a uci interface to a real interface which is
 162 # # managed outside of uci.
 163 # v cedit /etc/config/network <<'EOF' ||:
 164 # config interface 'tun0'
 165 #         option ifname 'tun0'
 166 #         option proto 'none'
 167 # EOF
 168 # v cedit /etc/config/openvpn <<'EOF' || v /etc/init.d/openvpn restart
 169 # config openvpn my_client_config
 170 #         option enabled 1
 171 #         option config /etc/openvpn/client.conf
 172 # EOF
 173
 174
 175
 176 v cedit /etc/config/firewall <<'EOF' || firewall_restart=true
 177 config redirect
 178     option name ssh
 179     option src              wan
 180     option src_dport        22
 181     option dest_ip          192.168.1.2
 182     option dest             lan
 183 config rule
 184     option src              wan
 185     option target           ACCEPT
 186     option dest_port        22
 187
 188 config redirect
 189     option name ssh
 190     option src              wan
 191     option src_dport        2222
 192     option dest_port        22
 193     option dest_ip          192.168.1.3
 194     option dest             lan
 195 config rule
 196     option src              wan
 197     option target           ACCEPT
 198     option dest_port        2222
 199
 200 config redirect
 201        option src              wan
 202        option src_dport        443
 203        option dest             lan
 204        option dest_ip          192.168.1.2
 205        option proto            tcp
 206 config rule
 207        option src              wan
 208        option target           ACCEPT
 209        option dest_port        443
 210        option proto            tcp
 211
 212 config redirect
 213        option src              wan
 214        option src_dport        80
 215        option dest             lan
 216        option dest_ip          192.168.1.2
 217        option proto            tcp
 218 config rule
 219        option src              wan
 220        option target           ACCEPT
 221        option dest_port        80
 222        option proto            tcp
 223 EOF
 224
 225
 226
 227
 228 dnsmasq_restart=false
 229 v cedit /etc/hosts <<EOF || dnsmasq_restart=true
 230 192.168.1.1 wrt
 231 192.168.1.2 treetowl $IMPERSONAL_DOMAIN
 232 192.168.1.3 frodo
 233 192.168.1.4 htpc
 234 192.168.1.5 x2
 235 192.168.1.6 demohost
 236 192.168.1.7 faiserver
 237 192.168.1.8 tp
 238 72.14.176.105 li
 239 45.33.1.160 lj
 240 138.68.10.24 dopub
 241 # cant ssh to do when on vpn. some routing/firewall rule or something,
 242 # I don't know. I can get there from wrt but not my machine.
 243 # but we can get to it from this address, so, good enough.
 244 10.8.0.1 do
 245 EOF
 246
 247
 248 # avoid using the dns servers that my isp tells me about.
 249 if [[ $(uci get dhcp.@dnsmasq[0].resolvfile) ]]; then
 250     # default is '/tmp/resolv.conf.auto', we switch to the dnsmasq default of
 251     # /etc/resolv.conf
 252     v uci delete dhcp.@dnsmasq[0].resolvfile
 253     uci commit dhcp
 254     dnsmasq_restart=true
 255 fi
 256
 257
 258 # useful: http://wiki.openwrt.org/doc/howto/dhcp.dnsmasq
 259
 260 v cedit /etc/dnsmasq.conf <<'EOF' || dnsmasq_restart=true
 261
 262 ############ updating dns servers ###################3
 263
 264
 265 # this says the ip of default gateway and dns server,
 266 # but I think they are unneded and default
 267 #dhcp-option=3,192.168.1.1
 268 #dhcp-option=6,192.168.1.1
 269
 270
 271
 272 # results from googling around dnsmasq optimizations
 273 # about 50k in memory. router has 62 megs.
 274 # in a browsing session, I probably won't ever do 5000 lookups
 275 # before the ttl expiration or whatever does expiration.
 276 cache-size=10000
 277
 278 # ask all servers, use the one which responds first.
 279 # http://ma.ttwagner.com/make-dns-fly-with-dnsmasq-all-servers/
 280 all-servers
 281
 282 # namebench benchmarks dns servers. google's dns was only
 283 # slightly less fast than some others, and I trust it more
 284 # to give accurate results, stay relatively fast, and
 285 # not do anythin too malicious, so just use that.
 286 # download namebench and run it like this:
 287 # 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
 288 # google
 289 server=8.8.4.4
 290 server=8.8.8.8
 291 server=2001:4860:4860::8888
 292 server=2001:4860:4860::8844
 293
 294
 295 # to fixup existin ips, on the client you can do
 296 # sudo dhclient -r; sudo dhclient <interface-name>
 297
 298 # default dhcp range is 100-150
 299 dhcp-host=f4:6d:04:02:ed:66,set:treetowl,192.168.1.2,treetowl
 300 dhcp-host=00:26:18:97:bb:16,set:frodo,192.168.1.3,frodo
 301 dhcp-host=10:78:d2:da:29:22,set:htpc,192.168.1.4,htpc
 302 dhcp-host=00:1f:16:16:39:24,set:x2,192.168.1.5,x2
 303 # this is so fai can have an explicit name to use for testing,
 304 # or else any random machine which did a pxe boot would get
 305 # reformatted. The mac is from doing a virt-install, cancelling it,
 306 # and copying the generated mac, so it should be randomish.
 307 dhcp-host=52:54:00:9c:ef:ad,set:demohost,192.168.1.6,demohost
 308 dhcp-host=52:54:00:56:09:f9,set:faiserver,192.168.1.7,faiserver
 309 dhcp-host=80:fa:5b:1c:6e:cf,set:tp,192.168.1.8,tp
 310 # this is the ip it picks by default if dhcp fails,
 311 # so might as well use it.
 312 # hostname is the name it uses according to telnet
 313 dhcp-host=b4:75:0e:94:29:ca,set:switch9429ca,192.168.1.251,switch9429ca
 314
 315
 316 # template
 317 # dhcp-host=,192.168.1.,
 318
 319 # Just leave the tftp server up even if we aren't doing pxe boot.
 320 # It has no sensitive info.
 321 enable-tftp=br-lan
 322 tftp-root=/mnt/usb/tftpboot
 323 EOF
 324
 325 if $dnsmasq_restart; then
 326     v /etc/init.d/dnsmasq restart
 327 fi
 328
 329 if $firewall_restart; then
 330     v /etc/init.d/firewall restart
 331 fi