added configuration for webserver and AllowRoot

.gitignore

@@ -1,3 +1,4 @@
+*.yaml
 
 # ---> Go
 # Binaries for programs and plugins

README.md

@@ -1,3 +1,13 @@
 # Feedizer
 
 A rewrite of the [Feedizer](https://git.zom.bi/fanir/feedizer) project originally written in PHP5.
+
+## Configuration
+
+To write the default configuration to a file, run `feedizer [-C path/to/configfile.yaml] newconfig`
+
+## Running as root
+
+Feedizer will abort startup if run as root. If you want to disable this behavior,
+i.e. because feedizer is running inside a docker container, you can set
+`FEEDIZER_ALLOWROOT=1` in the environment or `AllowRoot: true` in the config file.

cmd/feedizer/config/config.go

@@ -17,8 +17,18 @@ type DatabaseConfig struct {
 	Options  string
 }
 
+type ServerConfig struct {
+	Address     string
+	TemplateDir string
+	StaticDir   string
+}
+
 type Config struct {
 	Database DatabaseConfig
+
+	Server ServerConfig
+
+	AllowRoot bool
 }
 
 var config = Config{
@@ -28,6 +38,11 @@ var config = Config{
 		Database: "feedizer",
 		Options:  "sslmode=require",
 	},
+	Server: ServerConfig{
+		Address:     ":3000",
+		TemplateDir: "../../templates",
+		StaticDir:   "../../static",
+	},
 }
 
 const appName = "feedizer"

cmd/feedizer/config/env.go

@@ -57,6 +57,15 @@ func structFromEnv(v reflect.Value, t reflect.Type, prefix string) (namesAvailab
 					panic(err)
 				}
 				fv.SetInt(x)
+			case reflect.Bool:
+				switch strings.ToLower(val) {
+				case "1", "true", "t", "on":
+					fv.SetBool(true)
+				case "0", "false", "f", "off":
+					fv.SetBool(false)
+				default:
+					panic(fmt.Sprintf("cannot set field for environment variable %s: cannot parse %s as boolean. Please use one of: 1, true, t, on / 0, false, f, off", envName, fk))
+				}
 			default:
 				panic(fmt.Sprintf("cannot set field for environment variable %s: type %s is not supported", envName, fk))
 			}

cmd/feedizer/main.go

@@ -14,10 +14,6 @@ import (
 )
 
 func main() {
-	if os.Geteuid() == 0 {
-		log.Fatalln("do not run feedizer as root")
-	}
-
 	configFile := flag.String("C", "", "custom config file path")
 	autoMigrate := flag.Bool("m", true, "Automatically migrate the database to the highest version.")
 	flag.Parse()
@@ -49,6 +45,10 @@ func startApp(automigrate bool) {
 		log.Fatalln(err)
 	}
 
+	if !cfg.AllowRoot && os.Geteuid() == 0 {
+		log.Fatalln("do not run feedizer as root")
+	}
+
 	db, err := database.Open(cfg.Database)
 	if err != nil {
 		log.Fatalln(err)