diff options
Diffstat (limited to 'nixos/modules/services/misc/sourcehut/git.nix')
| -rw-r--r-- | nixos/modules/services/misc/sourcehut/git.nix | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/nixos/modules/services/misc/sourcehut/git.nix b/nixos/modules/services/misc/sourcehut/git.nix new file mode 100644 index 00000000000..ff110905d18 --- /dev/null +++ b/nixos/modules/services/misc/sourcehut/git.nix @@ -0,0 +1,217 @@ +{ config, lib, options, pkgs, ... }: + +with lib; +let + cfg = config.services.sourcehut; + opt = options.services.sourcehut; + scfg = cfg.git; + iniKey = "git.sr.ht"; + + rcfg = config.services.redis; + drv = pkgs.sourcehut.gitsrht; +in +{ + options.services.sourcehut.git = { + user = mkOption { + type = types.str; + visible = false; + internal = true; + readOnly = true; + default = "git"; + description = '' + User for git.sr.ht. + ''; + }; + + port = mkOption { + type = types.port; + default = 5001; + description = '' + Port on which the "git" module should listen. + ''; + }; + + database = mkOption { + type = types.str; + default = "git.sr.ht"; + description = '' + PostgreSQL database name for git.sr.ht. + ''; + }; + + statePath = mkOption { + type = types.path; + default = "${cfg.statePath}/gitsrht"; + defaultText = literalExpression ''"''${config.${opt.statePath}}/gitsrht"''; + description = '' + State path for git.sr.ht. + ''; + }; + + package = mkOption { + type = types.package; + default = pkgs.git; + defaultText = literalExpression "pkgs.git"; + example = literalExpression "pkgs.gitFull"; + description = '' + Git package for git.sr.ht. This can help silence collisions. + ''; + }; + }; + + config = with scfg; lib.mkIf (cfg.enable && elem "git" cfg.services) { + # sshd refuses to run with `Unsafe AuthorizedKeysCommand ... bad ownership or modes for directory /nix/store` + environment.etc."ssh/gitsrht-dispatch" = { + mode = "0755"; + text = '' + #! ${pkgs.stdenv.shell} + ${cfg.python}/bin/gitsrht-dispatch "$@" + ''; + }; + + # Needs this in the $PATH when sshing into the server + environment.systemPackages = [ cfg.git.package ]; + + users = { + users = { + "${user}" = { + isSystemUser = true; + group = user; + # https://stackoverflow.com/questions/22314298/git-push-results-in-fatal-protocol-error-bad-line-length-character-this + # Probably could use gitsrht-shell if output is restricted to just parameters... + shell = pkgs.bash; + description = "git.sr.ht user"; + }; + }; + + groups = { + "${user}" = { }; + }; + }; + + services = { + cron.systemCronJobs = [ "*/20 * * * * ${cfg.python}/bin/gitsrht-periodic" ]; + fcgiwrap.enable = true; + + openssh.authorizedKeysCommand = ''/etc/ssh/gitsrht-dispatch "%u" "%h" "%t" "%k"''; + openssh.authorizedKeysCommandUser = "root"; + openssh.extraConfig = '' + PermitUserEnvironment SRHT_* + ''; + + postgresql = { + authentication = '' + local ${database} ${user} trust + ''; + ensureDatabases = [ database ]; + ensureUsers = [ + { + name = user; + ensurePermissions = { "DATABASE \"${database}\"" = "ALL PRIVILEGES"; }; + } + ]; + }; + }; + + systemd = { + tmpfiles.rules = [ + # /var/log is owned by root + "f /var/log/git-srht-shell 0644 ${user} ${user} -" + + "d ${statePath} 0750 ${user} ${user} -" + "d ${cfg.settings."${iniKey}".repos} 2755 ${user} ${user} -" + ]; + + services = { + gitsrht = import ./service.nix { inherit config pkgs lib; } scfg drv iniKey { + after = [ "redis.service" "postgresql.service" "network.target" ]; + requires = [ "redis.service" "postgresql.service" ]; + wantedBy = [ "multi-user.target" ]; + + # Needs internally to create repos at the very least + path = [ pkgs.git ]; + description = "git.sr.ht website service"; + + serviceConfig.ExecStart = "${cfg.python}/bin/gunicorn ${drv.pname}.app:app -b ${cfg.address}:${toString port}"; + }; + + gitsrht-webhooks = { + after = [ "postgresql.service" "network.target" ]; + requires = [ "postgresql.service" ]; + wantedBy = [ "multi-user.target" ]; + + description = "git.sr.ht webhooks service"; + serviceConfig = { + Type = "simple"; + User = user; + Restart = "always"; + }; + + serviceConfig.ExecStart = "${cfg.python}/bin/celery -A ${drv.pname}.webhooks worker --loglevel=info"; + }; + }; + }; + + services.sourcehut.settings = { + # URL git.sr.ht is being served at (protocol://domain) + "git.sr.ht".origin = mkDefault "http://git.${cfg.originBase}"; + # Address and port to bind the debug server to + "git.sr.ht".debug-host = mkDefault "0.0.0.0"; + "git.sr.ht".debug-port = mkDefault port; + # Configures the SQLAlchemy connection string for the database. + "git.sr.ht".connection-string = mkDefault "postgresql:///${database}?user=${user}&host=/var/run/postgresql"; + # Set to "yes" to automatically run migrations on package upgrade. + "git.sr.ht".migrate-on-upgrade = mkDefault "yes"; + # The redis connection used for the webhooks worker + "git.sr.ht".webhooks = mkDefault "redis://${rcfg.bind}:${toString rcfg.port}/1"; + + # A post-update script which is installed in every git repo. + "git.sr.ht".post-update-script = mkDefault "${pkgs.sourcehut.gitsrht}/bin/gitsrht-update-hook"; + + # git.sr.ht's OAuth client ID and secret for meta.sr.ht + # Register your client at meta.example.org/oauth + "git.sr.ht".oauth-client-id = mkDefault null; + "git.sr.ht".oauth-client-secret = mkDefault null; + # Path to git repositories on disk + "git.sr.ht".repos = mkDefault "/var/lib/git"; + + "git.sr.ht".outgoing-domain = mkDefault "http://git.${cfg.originBase}"; + + # The authorized keys hook uses this to dispatch to various handlers + # The format is a program to exec into as the key, and the user to match as the + # value. When someone tries to log in as this user, this program is executed + # and is expected to omit an AuthorizedKeys file. + # + # Discard of the string context is in order to allow derivation-derived strings. + # This is safe if the relevant package is installed which will be the case if the setting is utilized. + "git.sr.ht::dispatch".${builtins.unsafeDiscardStringContext "${pkgs.sourcehut.gitsrht}/bin/gitsrht-keys"} = mkDefault "${user}:${user}"; + }; + + services.nginx.virtualHosts."git.${cfg.originBase}" = { + forceSSL = true; + locations."/".proxyPass = "http://${cfg.address}:${toString port}"; + locations."/query".proxyPass = "http://${cfg.address}:${toString (port + 100)}"; + locations."/static".root = "${pkgs.sourcehut.gitsrht}/${pkgs.sourcehut.python.sitePackages}/gitsrht"; + extraConfig = '' + location = /authorize { + proxy_pass http://${cfg.address}:${toString port}; + proxy_pass_request_body off; + proxy_set_header Content-Length ""; + proxy_set_header X-Original-URI $request_uri; + } + location ~ ^/([^/]+)/([^/]+)/(HEAD|info/refs|objects/info/.*|git-upload-pack).*$ { + auth_request /authorize; + root /var/lib/git; + fastcgi_pass unix:/run/fcgiwrap.sock; + fastcgi_param SCRIPT_FILENAME ${pkgs.git}/bin/git-http-backend; + fastcgi_param PATH_INFO $uri; + fastcgi_param GIT_PROJECT_ROOT $document_root; + fastcgi_read_timeout 500s; + include ${config.services.nginx.package}/conf/fastcgi_params; + gzip off; + } + ''; + + }; + }; +} |