From 9ff1f770f6f3703fad34ef4ce2d24116d84a5665 Mon Sep 17 00:00:00 2001
From: lassulus <lass@aidsballs.de>
Date: Mon, 9 Nov 2015 02:36:07 +0100
Subject: [PATCH] l 3: add wordpress_nginx.nix

---
 lass/3modules/default.nix         |   1 +
 lass/3modules/wordpress_nginx.nix | 195 ++++++++++++++++++++++++++++++
 2 files changed, 196 insertions(+)
 create mode 100644 lass/3modules/wordpress_nginx.nix

diff --git a/lass/3modules/default.nix b/lass/3modules/default.nix
index b081dc3cc..d0b96d2fd 100644
--- a/lass/3modules/default.nix
+++ b/lass/3modules/default.nix
@@ -9,5 +9,6 @@ _:
     ./per-user.nix
     ./urxvtd.nix
     ./xresources.nix
+    ./wordpress_nginx.nix
   ];
 }
diff --git a/lass/3modules/wordpress_nginx.nix b/lass/3modules/wordpress_nginx.nix
new file mode 100644
index 000000000..65170698f
--- /dev/null
+++ b/lass/3modules/wordpress_nginx.nix
@@ -0,0 +1,195 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.lass.wordpress;
+
+  out = {
+    options.lass.wordpress = api;
+    config = imp;
+  };
+
+  api = mkOption {
+    type = with types; attrsOf (submodule ({ config, ... }: {
+      options = {
+        domain = mkOption {
+          type = str;
+          default = config._module.args.name;
+        };
+        dbUser = mkOption {
+          type = str;
+          default = replaceStrings ["."] ["_"] config.domain;
+        };
+        dbName = mkOption {
+          type = str;
+          default = replaceStrings ["."] ["_"] config.domain;
+        };
+        folder = mkOption {
+          type = str;
+          default = "/srv/http/${config.domain}";
+        };
+        auto = mkOption {
+          type = bool;
+          default = false;
+        };
+        charset = mkOption {
+          type = str;
+          default = "utf8mb4";
+        };
+        collate = mkOption {
+          type = str;
+          default = "";
+        };
+        debug = mkOption {
+          type = bool;
+          default = false;
+        };
+      };
+    }));
+    default = {};
+  };
+
+  dataFolder = "/srv/http";
+  user = config.services.nginx.user;
+  group = config.services.nginx.group;
+
+  imp = {
+    krebs.nginx.servers = flip mapAttrs cfg ( name: { domain, ... }: {
+      server-names = [
+        "${domain}"
+        "www.${domain}"
+      ];
+      locations = [
+        (nameValuePair "/" ''
+          try_files $uri $uri/ /index.php?$args;
+        '')
+        (nameValuePair "~ \.php$" ''
+          fastcgi_pass unix:${dataFolder}/${domain}/phpfpm.pool;
+          include ${pkgs.nginx}/conf/fastcgi.conf;
+        '')
+        (nameValuePair "~ /\\." ''
+          deny all;
+        '')
+      ];
+      extraConfig = ''
+        root ${dataFolder}/${domain}/;
+        index index.php;
+        access_log /tmp/nginx_acc.log;
+        error_log /tmp/nginx_err.log;
+        error_page 404 /404.html;
+        error_page 500 502 503 504 /50x.html;
+      '';
+    });
+    services.phpfpm.poolConfigs = flip mapAttrs cfg (name: { domain, ... }: ''
+      listen = ${dataFolder}/${domain}/phpfpm.pool
+      user = ${user}
+      group = ${group}
+      pm = dynamic
+      pm.max_children = 5
+      pm.start_servers = 2
+      pm.min_spare_servers = 1
+      pm.max_spare_servers = 3
+      listen.owner = ${user}
+      listen.group = ${group}
+      # errors to journal
+      php_admin_value[error_log] = 'stderr'
+      php_admin_flag[log_errors] = on
+      catch_workers_output = yes
+    '');
+    systemd.services = flip mapAttrs' cfg (name: { domain, folder, charset, collate, dbName, dbUser, debug, ... }: {
+      name = "wordpressInit-${name}";
+      value = {
+        path = [
+          pkgs.mysql
+          pkgs.su
+          pkgs.gawk
+          pkgs.jq
+        ];
+        requiredBy = [ "nginx.service" ];
+        serviceConfig = let
+          php.define = name: value:
+            "define(${php.newdoc name}, ${php.newdoc value});";
+          php.toString = x:
+            "'${x}'";
+          php.newdoc = s:
+            let b = "EOF${builtins.hashString "sha256" s}"; in
+            ''<<<'${b}'
+            ${s}
+            ${b}
+            '';
+        in {
+          Type = "oneshot";
+          ExecStart = pkgs.writeScript "wordpressInit" ''
+            #!/bin/sh
+            set -euf
+            wp_secrets=${shell.escape "${toString <secrets>}/${domain}/wp-secrets"}
+            db_password=$(cat ${shell.escape "${toString <secrets>}/${domain}/sql-db-pw"})
+            get_secret() {
+              echo "define('$1', $(jq -r ."$1" "$wp_secrets" | to_php_string));"
+            }
+            to_php_string() {
+              echo "base64_decode('$(base64)')"
+            }
+            {
+              cat ${toString <secrets/mysql_rootPassword>}
+              password=$(cat ${shell.escape (toString (<secrets/mysql_rootPassword>))})
+              # TODO passwordhash=$(su nobody2 -c mysql <<< "SELECT PASSWORD($(toSqlString <<< "$password"));")
+              # TODO as package pkgs.sqlHashPassword
+              # TODO not using mysql
+              # SET SESSION sql_mode = 'NO_BACKSLASH_ESCAPES';
+              passwordhash=$(su nobody2 -c 'mysql -u nobody --silent' <<< "SELECT PASSWORD('$db_password');")
+              user=${shell.escape dbUser}@localhost
+              database=${shell.escape dbName}
+              cat << EOF
+                CREATE DATABASE IF NOT EXISTS $database;
+                GRANT USAGE ON *.* TO $user IDENTIFIED BY PASSWORD '$passwordhash';
+                GRANT ALL PRIVILEGES ON $database.* TO $user;
+                FLUSH PRIVILEGES;
+            EOF
+            } | mysql -u root -p
+            # TODO nix2php for wp-config.php
+            cat > ${folder}/wp-config.php << EOF
+            <?php
+            define('DB_PASSWORD', '$db_password');
+            define('DB_HOST', 'localhost');
+
+            ${concatStringsSep "\n" (mapAttrsToList (name: value:
+              "define('${name}', $(printf '%s' ${shell.escape value} | to_php_string));"
+            ) {
+              DB_NAME = dbName;
+              DB_USER = dbUser;
+              DB_CHARSET = charset;
+              DB_COLLATE = collate;
+            })}
+
+            ${concatMapStringsSep "\n" (key: "$(get_secret ${shell.escape key})") [
+              "AUTH_KEY"
+              "SECURE_AUTH_KEY"
+              "LOGGED_IN_KEY"
+              "NONCE_KEY"
+              "AUTH_SALT"
+              "SECURE_AUTH_SALT"
+              "LOGGED_IN_SALT"
+              "NONCE_SALT"
+            ]}
+
+            \$table_prefix = 'wp_';
+            define('WP_DEBUG', ${toJSON debug});
+            if ( !defined('ABSPATH') )
+              define('ABSPATH', dirname(__FILE__) . '/');
+
+            /** Sets up WordPress vars and included files. */
+            require_once(ABSPATH . 'wp-settings.php');
+            EOF
+          '';
+        };
+      };
+    });
+    users.users.nobody2 = {
+      uid = 125816384; # genid nobody2
+      useDefaultShell = true;
+    };
+  };
+
+in out