blob: 79d02c40de0c34b241de12e694f0b954df32709f (
plain) (
blame)
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
|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.nginx.tailscaleAuth;
in
{
options.services.nginx.tailscaleAuth = {
enable = mkEnableOption "Enable tailscale.nginx-auth, to authenticate nginx users via tailscale.";
package = lib.mkPackageOptionMD pkgs "tailscale-nginx-auth" {};
user = mkOption {
type = types.str;
default = "tailscale-nginx-auth";
description = "User which runs tailscale-nginx-auth";
};
group = mkOption {
type = types.str;
default = "tailscale-nginx-auth";
description = "Group which runs tailscale-nginx-auth";
};
expectedTailnet = mkOption {
default = "";
type = types.nullOr types.str;
example = "tailnet012345.ts.net";
description = ''
If you want to prevent node sharing from allowing users to access services
across tailnets, declare your expected tailnets domain here.
'';
};
socketPath = mkOption {
default = "/run/tailscale-nginx-auth/tailscale-nginx-auth.sock";
type = types.path;
description = ''
Path of the socket listening to nginx authorization requests.
'';
};
virtualHosts = mkOption {
type = types.listOf types.str;
default = [];
description = ''
A list of nginx virtual hosts to put behind tailscale.nginx-auth
'';
};
};
config = mkIf cfg.enable {
services.tailscale.enable = true;
services.nginx.enable = true;
users.users.${cfg.user} = {
isSystemUser = true;
inherit (cfg) group;
};
users.groups.${cfg.group} = { };
users.users.${config.services.nginx.user}.extraGroups = [ cfg.group ];
systemd.sockets.tailscale-nginx-auth = {
description = "Tailscale NGINX Authentication socket";
partOf = [ "tailscale-nginx-auth.service" ];
wantedBy = [ "sockets.target" ];
listenStreams = [ cfg.socketPath ];
socketConfig = {
SocketMode = "0660";
SocketUser = cfg.user;
SocketGroup = cfg.group;
};
};
systemd.services.tailscale-nginx-auth = {
description = "Tailscale NGINX Authentication service";
after = [ "nginx.service" ];
wants = [ "nginx.service" ];
requires = [ "tailscale-nginx-auth.socket" ];
serviceConfig = {
ExecStart = "${lib.getExe cfg.package}";
RuntimeDirectory = "tailscale-nginx-auth";
User = cfg.user;
Group = cfg.group;
BindPaths = [ "/run/tailscale/tailscaled.sock" ];
CapabilityBoundingSet = "";
DeviceAllow = "";
LockPersonality = true;
MemoryDenyWriteExecute = true;
PrivateDevices = true;
PrivateUsers = true;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
RestrictNamespaces = true;
RestrictAddressFamilies = [ "AF_UNIX" ];
RestrictRealtime = true;
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
SystemCallErrorNumber = "EPERM";
SystemCallFilter = [
"@system-service"
"~@cpu-emulation" "~@debug" "~@keyring" "~@memlock" "~@obsolete" "~@privileged" "~@setuid"
];
};
};
services.nginx.virtualHosts = genAttrs
cfg.virtualHosts
(vhost: {
locations."/auth" = {
extraConfig = ''
internal;
proxy_pass http://unix:${cfg.socketPath};
proxy_pass_request_body off;
# Upstream uses $http_host here, but we are using gixy to check nginx configurations
# gixy wants us to use $host: https://github.com/yandex/gixy/blob/master/docs/en/plugins/hostspoofing.md
proxy_set_header Host $host;
proxy_set_header Remote-Addr $remote_addr;
proxy_set_header Remote-Port $remote_port;
proxy_set_header Original-URI $request_uri;
proxy_set_header X-Scheme $scheme;
proxy_set_header X-Auth-Request-Redirect $scheme://$host$request_uri;
'';
};
locations."/".extraConfig = ''
auth_request /auth;
auth_request_set $auth_user $upstream_http_tailscale_user;
auth_request_set $auth_name $upstream_http_tailscale_name;
auth_request_set $auth_login $upstream_http_tailscale_login;
auth_request_set $auth_tailnet $upstream_http_tailscale_tailnet;
auth_request_set $auth_profile_picture $upstream_http_tailscale_profile_picture;
proxy_set_header X-Webauth-User "$auth_user";
proxy_set_header X-Webauth-Name "$auth_name";
proxy_set_header X-Webauth-Login "$auth_login";
proxy_set_header X-Webauth-Tailnet "$auth_tailnet";
proxy_set_header X-Webauth-Profile-Picture "$auth_profile_picture";
${lib.optionalString (cfg.expectedTailnet != "") ''proxy_set_header Expected-Tailnet "${cfg.expectedTailnet}";''}
'';
});
};
meta.maintainers = with maintainers; [ phaer ];
}
|
