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{ lib, pkgs, config, ... }:
let
inherit (builtins) split;
inherit (lib) flip foldr groupBy head literalExpression mapAttrs
mapAttrs' mapAttrsToList mkOption nameValuePair optionalAttrs types;
cfg = config.services.cgit-qyliss;
instancesByVhost = groupBy ({ value, ... }: value.vhost)
(mapAttrsToList nameValuePair cfg.instances);
vhostConfigs = mapAttrs (vhost: instances:
foldr (l: r: l // r) {} (map ({ name, value }: let
unslashedPath = head (split "/+$" value.path);
# We'll be dealing almost exclusively with paths ending in /,
# since otherwise Nginx likes to do simple prefix matching.
path = "${unslashedPath}/";
in {
locations = {
${path} = {
alias = "${value.package}/cgit/";
tryFiles = "$uri @${name}-cgit";
};
"@${name}-cgit" = {
proxyPass = "http://unix:/run/cgit/${name}.sock";
};
} // optionalAttrs (unslashedPath != "") {
${unslashedPath} = {
return = "301 ${path}";
};
};
extraConfig = ''
if ($http_user_agent = "my-tiny-bot") {
return 429;
}
if ($http_user_agent = "thesis-research-bot") {
return 429;
}
'';
}) instances)
) instancesByVhost;
in
{
options.services.cgit-qyliss = {
instances = mkOption {
type = types.attrsOf (types.submodule {
options = {
vhost = mkOption {
type = types.str;
example = "spectrum-os.org";
description = "Nginx vhost for the cgit";
};
path = mkOption {
type = types.strMatching "/(.*[^/])?";
default = "/";
example = "/git";
description = ''
Path to be appended to all cgit URLs.
Leading slashes are mandatory; trailing slashes are forbidden.
'';
};
package = mkOption {
type = types.package;
default = pkgs.cgit;
defaultText = literalExpression "pkgs.cgit";
description = "cgit package to use";
};
config = mkOption {
type = types.package;
description = ''
Configuration file for cgit. See
<citerefentry><refentrytitle>cgitrc</refentrytitle>
<manvolnum>5</manvolnum></citerefentry>.
'';
};
};
});
default = {};
description = "List of cgit instances to run";
};
};
config = {
services.nginx.virtualHosts = vhostConfigs;
systemd.services = flip mapAttrs' cfg.instances (name: instance: {
name = "lighttpd-${name}@";
value = {
unitConfig.CollectMode = "inactive-or-failed";
serviceConfig.StandardInput = "socket";
serviceConfig.StandardOutput = "socket";
serviceConfig.StandardError = "journal";
serviceConfig.DynamicUser = true;
serviceConfig.Type = "oneshot";
serviceConfig.TimeoutSec = "30";
serviceConfig.ExecStart = "${lib.getExe pkgs.lighttpd} -1 -f ${pkgs.writeText "lighttpd-${name}.conf" ''
server.modules = ( "mod_alias", "mod_setenv", "mod_cgi" )
server.document-root = "/var/empty"
server.errorlog-use-syslog = "enable"
alias.url = (
"${if instance.path == "/" then "" else instance.path}" =>
"${instance.package}/cgit/cgit.cgi"
)
cgi.assign = (
"cgit.cgi" => "${instance.package}/cgit/cgit.cgi"
)
setenv.add-environment = (
"CGIT_CONFIG" => "${instance.config}"
)
''}";
};
});
systemd.sockets = flip mapAttrs' cfg.instances (name: instance: {
name = "lighttpd-${name}";
value = {
wantedBy = [ "sockets.target" ];
socketConfig.ListenStream = "/run/cgit/${name}.sock";
socketConfig.Accept = "yes";
};
});
};
}
|