Validiere Mailaddressen in der Konfiguration

config/config.go

@@ -10,6 +10,7 @@ import (
 	"html/template"
 	"io/ioutil"
 	"log"
+	"net/mail"
 )
 
 // A Config holds all the constants for the programm.
@@ -122,6 +123,21 @@ func validateConfig(conf *Config) error {
 		err = fmt.Errorf("Validating config: Mailer type must be 'Stdout' or 'Smtp', but is '%s'.", conf.Mailer.Type)
 		log.Println(err.Error())
 	}
+	mailFromAddress, mailFromAddressErr := mail.ParseAddress(conf.Mailer.FromAddress)
+	if !(mailFromAddressErr == nil) {
+		err = fmt.Errorf("Validating config: Mail FromAddress could not be parsed (%w)", mailFromAddressErr)
+		log.Println(err)
+	} else {
+		if !(mailFromAddress.Name == "") {
+			err = fmt.Errorf("Validating config: Mail FromAddress must not contain a name value, but has '%s'", mailFromAddress.Name)
+			log.Println(err)
+		}
+	}
+	_, mailFromNameErr := mail.ParseAddress(string(conf.Mailer.FromName))
+	if !(mailFromNameErr == nil) {
+		err = fmt.Errorf("Validating config: Mail FromName could not be parsed (%w)", mailFromNameErr)
+		log.Println(err)
+	}
 	if !(conf.SQL.Type == "SQLite" || conf.SQL.Type == "Mysql") {
 		err = fmt.Errorf("Validating config: SQL type must be 'SQLite' or 'Mysql', but is '%s'.", conf.SQL.Type)
 		log.Println(err.Error())