1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
{ config, lib, pkgs, ... }:
let
# XXX cannot use config.build.host.name here because infinite recursion when
# defining krebs.hosts.${host-name}.nets.retiolum.aliases below.
host-name = "xu";
in
# usage:
# echo set_password vnc correcthorze | xu-qemu0-monitor
#
# vncdo -s xu:1 type 'curl init.xu.r' key shift-\\ type sh key return
#
# http://vnc.xu/vnc_auto.html?port=5701&host=xu&password=correcthorze
#
# make [install] system=xu-qemu0 target_host=10.56.0.101
# TODO iptables -A INPUT -p udp -m udp --dport bootps -j ACCEPT
# TODO iptables -A FORWARD -i qemubr0 -s 10.56.0.1/24 -m conntrack --ctstate NEW -j ACCEPT
# TODO iptables -A POSTROUTING -t nat -j MASQUERADE
# TODO iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
# TODO iptables -A INPUT -i qemubr0 -p udp -m udp --dport domain -j ACCEPT
# TODO echo 1 > /proc/sys/net/ipv4/ip_forward
# TODO ifconfig qemubr0 10.56.0.1/24 up
with lib;
{
#networking.wireless.interfaces = [ "wlp3s0" ];
#networking.useNetworkd = true;
#networking.dhcpcd.allowInterfaces = [
# "qemubr0"
#];
#systemd.network.networks.wlp3s0 = {
# matchConfig.name = "wlp3s0";
# networkConfig.Bridge = "qemubr0";
#};
systemd.network.enable = true;
systemd.network.netdevs.qemubr0 = {
netdevConfig = {
Name = "qemubr0";
Kind = "bridge";
};
};
users.groups.qemu-users.gid = genid "qemu-users";
environment.etc."qemu/bridge.conf".text = ''
allow qemubr0
'';
krebs.per-user.tv.packages = [
pkgs.vncdotool
];
users.users.xu-qemu0 = {
createHome = true;
group = "qemu-users";
home = "/home/xu-qemu0";
uid = genid "xu-qemu0";
};
systemd.services.xu-qemu0 = let
in {
after = [ "network.target" "systemd-resolved.service" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
User = "xu-qemu0";
SyslogIdentifier = "xu-qemu0";
ExecStart = pkgs.writeDash "xu-qemu0" ''
set -efu
img=$HOME/tmp/xu-qemu0.raw
if ! test -e "$img"; then
${pkgs.coreutils}/bin/mkdir -p "$(${pkgs.coreutils}/bin/dirname "$img")"
${pkgs.kvm}/bin/qemu-img create "$img" 10G
fi
exec ${pkgs.kvm}/bin/qemu-kvm \
-monitor unix:$HOME/xu-qemu0.sock,server,nowait \
-boot order=cd \
-cdrom ${pkgs.fetchurl {
url = https://nixos.org/releases/nixos/15.09/nixos-15.09.1012.9fe0c23/nixos-minimal-15.09.1012.9fe0c23-x86_64-linux.iso;
sha256 = "18bc9wrsrjnhj9rya75xliqkl99gxbsk4dmwqivhvwfzb5qb5yp9";
}} \
-m 1024 \
-netdev bridge,br=qemubr0,id=hn0,helper=/var/setuid-wrappers/qemu-bridge-helper \
-net nic,netdev=hn0,id=nic1,macaddr=52:54:00:12:34:56 \
-drive file="$img",format=raw \
-display vnc=:1,websocket=5701,password,lossy \
-name xu-qemu0 \
'';
};
};
system.activationScripts."krebs.setuid.xu-qemu0-monitor" = stringAfter [ "setuid" ] ''
src=${pkgs.execve "xu-qemu0-monitor" {
# TODO toC should handle derivation, then we don't have to "${...}" here
filename = "${pkgs.writeDash "xu-qemu0-monitor" ''
exec ${pkgs.socat}/bin/socat \
stdio \
UNIX-CONNECT:${config.users.users.xu-qemu0.home}/xu-qemu0.sock \
''}";
}}
dst=${config.security.wrapperDir}/xu-qemu0-monitor
cp "$src" "$dst"
chown xu-qemu0.tv "$dst"
chmod 4710 "$dst"
'';
#TODO krebs.setuid.qemu-bridge-helper = {
# filename = "${pkgs.qemu}/libexec/qemu-bridge-helper";
# owner = "root";
# group = "qemu-users";
# mode = "4710";
#};
system.activationScripts."krebs.setuid" = stringAfter [ "setuid" ] ''
src=${pkgs.execve "qemu-bridge-helper" {
filename = "${pkgs.qemu}/libexec/qemu-bridge-helper";
}}
dst=${config.security.wrapperDir}/qemu-bridge-helper
cp "$src" "$dst"
chown root.qemu-users "$dst"
chmod 4710 "$dst"
'';
users.users.qemu-dnsmasq.uid = genid "qemu-dnsmasq";
# TODO need custom etc/dbus-1/system.d/dnsmasq.conf for different BusName
services.dbus.packages = [ pkgs.dnsmasq ];
systemd.services.qemu-dnsmasq = let
# bind-interfaces
conf = pkgs.writeText "qemu-dnsmasq.conf" ''
listen-address=10.56.0.1
interface=qemubr0
dhcp-range=10.56.0.200,10.56.0.250
dhcp-no-override
dhcp-leasefile=/tmp/qemu-dnsmasq.leases
domain=${host-name}.local
dhcp-host=52:54:00:12:34:56,xu-qemu0,10.56.0.101,1440m
'';
in {
after = [ "network.target" "systemd-resolved.service" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "dbus";
BusName = "uk.org.thekelleys.dnsmasq";
# -1 --enable-dbus[=uk.org.thekelleys.dnsmasq]
SyslogIdentifier = "qemu-dnsmasq";
ExecStart = "${pkgs.dnsmasq}/bin/dnsmasq -1k -u qemu-dnsmasq -C ${conf}";
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
PrivateTmp = "true";
};
restartTriggers = [ config.environment.etc.hosts.source ];
};
krebs.nginx.servers.init = {
server-names = [
"init.${host-name}"
"init.${host-name}.r"
"init.${host-name}.retiolum"
];
extraConfig = ''
index init.txt;
root ${pkgs.writeTextFile {
name = "init-pages";
text = ''
#! /bin/sh
set -efu
dev=/dev/sda
pttype=dos # gpt
case $pttype in
dos)
if ! test "$(blkid -o value -s PTTYPE "$dev")" = dos; then
parted -s "$dev" mklabel msdos
fi
if ! test "$(blkid -o value -s PARTLABEL "$dev"1)" = primary; then
parted -s "$dev" mkpart primary ext4 1MiB 513MiB
parted -s "$dev" set 1 boot on
fi
;;
gpt)
if ! test "$(blkid -o value -s PTTYPE "$dev")" = gpt; then
parted -s "$dev" mklabel gpt
fi
if ! test "$(blkid -o value -s PARTLABEL "$dev"1)" = ESP; then
parted -s "$dev" mkpart ESP fat32 1MiB 513MiB
parted -s "$dev" set 1 boot on
fi
;;
*)
echo "Error: bad pttype: $pttype" >&2
exit -1
esac
if ! test "$(blkid -o value -s PARTLABEL "$dev"2)" = primary; then
parted -s "$dev" mkpart primary btrfs 513MiB 100%
fi
if ! test "$(blkid -o value -s TYPE "$dev"1)" = vfat; then
mkfs.vfat "$dev"1
fi
if ! test "$(blkid -o value -s TYPE "$dev"2)" = btrfs; then
mkfs.btrfs "$dev"2
fi
parted "$dev" print
if ! test "$(lsblk -n -o MOUNTPOINT "$dev"2)" = /mnt; then
mount "$dev"2 /mnt
fi
if ! test "$(lsblk -n -o MOUNTPOINT "$dev"1)" = /mnt/boot; then
mkdir -m 0000 -p /mnt/boot
mount "$dev"1 /mnt/boot
fi
lsblk "$dev"
key=${shell.escape config.krebs.users.tv-xu.pubkey}
if [ "$(cat /root/.ssh/authorized_keys 2>/dev/null)" != "$key" ]; then
mkdir -p /root/.ssh
echo "$key" > /root/.ssh/authorized_keys
fi
systemctl start sshd
ip route
echo READY.
'';
destination = "/init.txt";
}};
'';
};
krebs.hosts.${host-name}.nets.retiolum.aliases = [
"init.${host-name}.r"
"init.${host-name}.retiolum"
"vnc.${host-name}.r"
"vnc.${host-name}.retiolum"
];
krebs.nginx.servers.noVNC = {
server-names = [
"vnc.${host-name}"
"vnc.${host-name}.r"
"vnc.${host-name}.retiolum"
];
#rewrite ^([^.]*)$ /vnc_auto.html?host=localhost&port=5701;
locations = singleton (nameValuePair "/" ''
index vnc.html;
root ${pkgs.noVNC};
'');
};
}
|
