Added files from the first prototype.

cmd/csaf_provider/mux.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"net/http"
+	"os"
+	"strings"
+)
+
+type pathInfoMux struct {
+	routes map[string]http.Handler
+}
+
+func newPathInfoMux() *pathInfoMux {
+	return &pathInfoMux{routes: map[string]http.Handler{}}
+}
+
+func (pim *pathInfoMux) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
+	pi := os.Getenv("PATH_INFO")
+	if h, ok := pim.routes[pi]; ok {
+		h.ServeHTTP(rw, req)
+		return
+	}
+	for k, v := range pim.routes {
+		if strings.HasPrefix(k, pi) {
+			v.ServeHTTP(rw, req)
+			return
+		}
+	}
+	http.NotFound(rw, req)
+}
+
+func (pim *pathInfoMux) handle(pattern string, handler http.Handler) {
+	pim.routes[pattern] = handler
+}
+
+func (pim *pathInfoMux) handleFunc(pattern string, handler func(http.ResponseWriter, *http.Request)) {
+	pim.handle(pattern, http.HandlerFunc(handler))
+}