Add log and auth modules

modules/auth/auth.go

@@ -0,0 +1,25 @@
+package auth
+
+import (
+	uuid "github.com/nu7hatch/gouuid"
+	"strings"
+
+	"code.as/writeas/web/modules/log"
+)
+
+// GetToken parses out the user token from an Authorization header.
+func GetToken(header string) []byte {
+	var accessToken []byte
+	if len(header) > 0 {
+		f := strings.Fields(header)
+		if len(f) == 2 && f[0] == "Token" {
+			t, err := uuid.ParseHex(f[1])
+			if err != nil {
+				log.Error("Couldn't parseHex on '%s': %v", accessToken, err)
+			} else {
+				accessToken = t[:]
+			}
+		}
+	}
+	return accessToken
+}