diff --git a/crm/misc.go b/crm/misc.go
new file mode 100644
index 000000000..2cf0fdf78
--- /dev/null
+++ b/crm/misc.go
@@ -0,0 +1,10 @@
+package crm
+
+import (
+	"net/http"
+)
+
+// RequestFiller is an interface for typed request parameters
+type RequestFiller interface {
+	Fill(r *http.Request) error
+}
diff --git a/crm/util.go b/crm/util.go
new file mode 100644
index 000000000..b08fdf726
--- /dev/null
+++ b/crm/util.go
@@ -0,0 +1,33 @@
+package crm
+
+import (
+	"strconv"
+)
+
+// parseInt64 parses an string to int64
+func parseInt64(s string) int64 {
+	if s == "" {
+		return 0
+	}
+	i, _ := strconv.ParseInt(s, 10, 64)
+	return i
+}
+
+// parseUInt64 parses an string to uint64
+func parseUInt64(s string) uint64 {
+	if s == "" {
+		return 0
+	}
+	i, _ := strconv.ParseUint(s, 10, 64)
+	return i
+}
+
+// is checks if string s is contained in matches
+func is(s string, matches ...string) bool {
+	for _, v := range matches {
+		if s == v {
+			return true
+		}
+	}
+	return false
+}