many small improvements

internal/common/configuration.go

@@ -62,6 +62,7 @@ type Config struct {
 		AdminUser        string `yaml:"adminUser" envconfig:"ADMIN_USER"` // optional, non LDAP admin user
 		AdminPassword    string `yaml:"adminPass" envconfig:"ADMIN_PASS"`
 		DatabasePath     string `yaml:"database" envconfig:"DATABASE_PATH"`
+		EditableKeys     bool   `yaml:"editableKeys" envconfig:"EDITABLE_KEYS"`
 	} `yaml:"core"`
 	Email          MailConfig       `yaml:"email"`
 	LDAP           ldap.Config      `yaml:"ldap"`

internal/common/util.go

@@ -1,6 +1,7 @@
 package common
 
 import (
+	"fmt"
 	"net"
 	"strings"
 )
@@ -55,3 +56,18 @@ func ParseStringList(lst string) []string {
 func ListToString(lst []string) string {
 	return strings.Join(lst, ", ")
 }
+
+// https://yourbasic.org/golang/formatting-byte-size-to-human-readable-format/
+func ByteCountSI(b int64) string {
+	const unit = 1000
+	if b < unit {
+		return fmt.Sprintf("%d B", b)
+	}
+	div, exp := int64(unit), 0
+	for n := b / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+	return fmt.Sprintf("%.1f %cB",
+		float64(b)/float64(div), "kMGTPE"[exp])
+}