168 lines
4.7 KiB
Nix
168 lines
4.7 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.squid;
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squidConfig = pkgs.writeText "squid.conf"
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(if cfg.configText != null then cfg.configText else
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''
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#
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# Recommended minimum configuration (3.5):
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#
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# Example rule allowing access from your local networks.
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# Adapt to list your (internal) IP networks from where browsing
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# should be allowed
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acl localnet src 10.0.0.0/8 # RFC 1918 possible internal network
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acl localnet src 172.16.0.0/12 # RFC 1918 possible internal network
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acl localnet src 192.168.0.0/16 # RFC 1918 possible internal network
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acl localnet src 169.254.0.0/16 # RFC 3927 link-local (directly plugged) machines
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acl localnet src fc00::/7 # RFC 4193 local private network range
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acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines
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acl SSL_ports port 443 # https
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acl Safe_ports port 80 # http
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acl Safe_ports port 21 # ftp
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acl Safe_ports port 443 # https
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acl Safe_ports port 70 # gopher
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acl Safe_ports port 210 # wais
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acl Safe_ports port 1025-65535 # unregistered ports
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acl Safe_ports port 280 # http-mgmt
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acl Safe_ports port 488 # gss-http
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acl Safe_ports port 591 # filemaker
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acl Safe_ports port 777 # multiling http
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acl CONNECT method CONNECT
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#
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# Recommended minimum Access Permission configuration:
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#
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# Deny requests to certain unsafe ports
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http_access deny !Safe_ports
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# Deny CONNECT to other than secure SSL ports
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http_access deny CONNECT !SSL_ports
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# Only allow cachemgr access from localhost
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http_access allow localhost manager
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http_access deny manager
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# We strongly recommend the following be uncommented to protect innocent
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# web applications running on the proxy server who think the only
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# one who can access services on "localhost" is a local user
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http_access deny to_localhost
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# Application logs to syslog, access and store logs have specific files
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cache_log syslog
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access_log stdio:/var/log/squid/access.log
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cache_store_log stdio:/var/log/squid/store.log
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# Required by systemd service
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pid_filename /run/squid.pid
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# Run as user and group squid
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cache_effective_user squid squid
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#
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# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
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#
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${cfg.extraConfig}
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# Example rule allowing access from your local networks.
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# Adapt localnet in the ACL section to list your (internal) IP networks
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# from where browsing should be allowed
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http_access allow localnet
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http_access allow localhost
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# And finally deny all other access to this proxy
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http_access deny all
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# Squid normally listens to port 3128
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http_port ${toString cfg.proxyPort}
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# Leave coredumps in the first cache dir
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coredump_dir /var/cache/squid
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#
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# Add any of your own refresh_pattern entries above these.
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#
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refresh_pattern ^ftp: 1440 20% 10080
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refresh_pattern ^gopher: 1440 0% 1440
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refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
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refresh_pattern . 0 20% 4320
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'');
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in
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{
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options = {
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services.squid = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to run squid web proxy.";
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};
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proxyPort = mkOption {
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type = types.int;
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default = 3128;
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description = "TCP port on which squid will listen.";
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Squid configuration. Contents will be added
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verbatim to the configuration file.
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'';
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};
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configText = mkOption {
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type = types.nullOr types.lines;
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default = null;
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description = ''
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Verbatim contents of squid.conf. If null (default), use the
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autogenerated file from NixOS instead.
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'';
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};
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};
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};
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config = mkIf cfg.enable {
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users.users.squid = {
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isSystemUser = true;
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group = "squid";
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home = "/var/cache/squid";
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createHome = true;
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};
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users.groups.squid = {};
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systemd.services.squid = {
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description = "Squid caching web proxy";
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after = [ "network.target" "nss-lookup.target" ];
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wantedBy = [ "multi-user.target"];
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preStart = ''
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mkdir -p "/var/log/squid"
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chown squid:squid "/var/log/squid"
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'';
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serviceConfig = {
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Type="forking";
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PIDFile="/run/squid.pid";
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ExecStart = "${pkgs.squid}/bin/squid -YCs -f ${squidConfig}";
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};
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};
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};
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}
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