config.go

   1 /*
   2  * Handle fbfp's configuration.
   3  *
   4  * Copyright (C) 2024  Runxi Yu <https://runxiyu.org>
   5  * SPDX-License-Identifier: AGPL-3.0-or-later
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  */
  20
  21 package main
  22
  23 import (
  24         "bufio"
  25         "os"
  26
  27         "git.sr.ht/~emersion/go-scfg"
  28 )
  29
  30 /*
  31  * config.Openid.Authorize doesn't have to be specified. But if it is
  32  * specified, it replaces the once obtained from the
  33  * .well-known/openid-configuration endpoint. Because Microsoft doesn't seem to
  34  * want to put their v2.0 authorization endpoint anywhere in their
  35  * configuration.
  36  */
  37
  38 var config_with_pointers struct {
  39         Url    *string `scfg:"url"`
  40         Prod   *bool   `scfg:"prod"`
  41         Tmpl   *string `scfg:"tmpl"`
  42         Static *bool   `scfg:"static"`
  43         Listen struct {
  44                 Addr  *string `scfg:"addr"`
  45                 Net   *string `scfg:"net"`
  46                 Proto *string `scfg:"proto"`
  47         } `scfg:"listen"`
  48         Db struct {
  49                 Type *string `scfg:"type"`
  50                 Conn *string `scfg:"conn"`
  51         } `scfg:"db"`
  52         Openid struct {
  53                 Client    *string `scfg:"client"`
  54                 Endpoint  *string `scfg:"endpoint"`
  55                 Authorize *string `scfg:"authorize"`
  56         } `scfg:"openid"`
  57 }
  58
  59 var config struct {
  60         Url    string
  61         Prod   bool
  62         Tmpl   string
  63         Static bool
  64         Listen struct {
  65                 Addr  string
  66                 Net   string
  67                 Proto string
  68         }
  69         Db struct {
  70                 Type string
  71                 Conn string
  72         }
  73         Openid struct {
  74                 Client    string
  75                 Endpoint  string
  76                 Authorize string
  77         }
  78 }
  79
  80 func fbfp_get_config(path string) error {
  81         f := er(os.Open(path))
  82
  83         err := scfg.NewDecoder(bufio.NewReader(f)).Decode(&config_with_pointers)
  84         if err != nil {
  85                 return err
  86         }
  87
  88         /*
  89          * TODO: We segfault when there are missing configuration options.
  90          * There should be better ways to handle this.
  91          */
  92         config.Url = *(config_with_pointers.Url)
  93         config.Prod = *(config_with_pointers.Prod)
  94         config.Tmpl = *(config_with_pointers.Tmpl)
  95         config.Static = *(config_with_pointers.Static)
  96         config.Listen.Addr = *(config_with_pointers.Listen.Addr)
  97         config.Listen.Net = *(config_with_pointers.Listen.Net)
  98         config.Listen.Proto = *(config_with_pointers.Listen.Proto)
  99         config.Db.Type = *(config_with_pointers.Db.Type)
 100         config.Db.Conn = *(config_with_pointers.Db.Conn)
 101         config.Openid.Client = *(config_with_pointers.Openid.Client)
 102         config.Openid.Endpoint = *(config_with_pointers.Openid.Endpoint)
 103
 104         if config_with_pointers.Openid.Authorize != nil {
 105                 config.Openid.Authorize =
 106                         *(config_with_pointers.Openid.Authorize)
 107         }
 108
 109         return nil
 110 }