misc: small fix or general refactoring i did not bother commenting

modules/zerogod/zerogod_generic_handler.go

@@ -0,0 +1,69 @@
+package zerogod
+
+import (
+	"fmt"
+	"net"
+)
+
+func Dump(by []byte) string {
+	s := ""
+	n := len(by)
+	rowcount := 0
+	width := 16
+
+	stop := (n / width) * width
+	k := 0
+	for i := 0; i <= stop; i += width {
+		k++
+		if i+width < n {
+			rowcount = width
+		} else {
+			rowcount = min(k*width, n) % width
+		}
+
+		s += fmt.Sprintf("%02d ", i)
+		for j := 0; j < rowcount; j++ {
+			s += fmt.Sprintf("%02x  ", by[i+j])
+		}
+		for j := rowcount; j < width; j++ {
+			s += "    "
+		}
+		s += fmt.Sprintf("  '%s'\n", viewString(by[i:(i+rowcount)]))
+	}
+
+	return s
+}
+
+func min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+func viewString(b []byte) string {
+	r := []rune(string(b))
+	for i := range r {
+		if r[i] < 32 || r[i] > 126 {
+			r[i] = '.'
+		}
+	}
+	return string(r)
+}
+
+func handleGenericTCP(mod *ZeroGod, client net.Conn, srvHost string, srvPort int, srvTLS bool) {
+	defer client.Close()
+
+	buf := make([]byte, 1024)
+	for {
+		if read, err := client.Read(buf); err != nil {
+			mod.Error("error while reading from %v: %v", client.RemoteAddr(), err)
+			break
+		} else if read == 0 {
+			mod.Error("error while reading from %v: no data", client.RemoteAddr())
+			break
+		} else {
+			mod.Info("read %d bytes from %v:\n%s\n", read, client.RemoteAddr(), Dump(buf[0:read]))
+		}
+	}
+}