Lots of code cleanup, better error handling, etc...

cmd/warewulfd/ipxe.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"fmt"
+	"github.com/hpcng/warewulf/internal/pkg/assets"
+	"log"
+	"net/http"
+	"strings"
+)
+
+func ipxe(w http.ResponseWriter, req *http.Request) {
+	url := strings.Split(req.URL.Path, "/")
+
+	if url[2] == "" {
+		fmt.Printf("ERROR: Bad iPXE request from %s\n", req.RemoteAddr)
+		return
+	}
+
+	hwaddr := strings.ReplaceAll(url[2], "-", ":")
+	node, err := assets.FindByHwaddr(hwaddr)
+	if err != nil {
+		log.Printf("Could not find HW Addr: %s\n", hwaddr)
+		w.WriteHeader(404)
+		return
+	}
+
+	if node.HostName != "" {
+		fmt.Printf("IPXE:  %15s: hwaddr=%s\n", node.Fqdn, hwaddr)
+
+		fmt.Fprintf(w, "#!ipxe\n")
+
+		fmt.Fprintf(w, "echo Now booting Warewulf - v4 Proof of Concept\n")
+		fmt.Fprintf(w, "set base http://192.168.1.1:9873/\n")
+		fmt.Fprintf(w, "kernel ${base}/kernel/%s crashkernel=no quiet\n", url[2])
+		fmt.Fprintf(w, "initrd ${base}/vnfs/%s\n", url[2])
+		fmt.Fprintf(w, "initrd ${base}/kmods/%s\n", url[2])
+		fmt.Fprintf(w, "initrd ${base}/overlay/%s\n", url[2])
+		fmt.Fprintf(w, "boot\n")
+	} else {
+		fmt.Printf("ERROR: iPXE request from unknown Node (hwaddr=%s)\n", url[2])
+	}
+	return
+}