155 lines
3.6 KiB
Go
155 lines
3.6 KiB
Go
package warewulfd
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import (
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"fmt"
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"net/http"
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"strconv"
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"strings"
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"text/template"
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"github.com/hpcng/warewulf/internal/pkg/node"
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"github.com/hpcng/warewulf/internal/pkg/overlay"
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"github.com/hpcng/warewulf/internal/pkg/warewulfconf"
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"github.com/hpcng/warewulf/internal/pkg/wwlog"
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)
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type iPxeTemplate struct {
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Message string
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WaitTime string
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Hostname string
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Fqdn string
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Id string
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Cluster string
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ContainerName string
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Hwaddr string
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Ipaddr string
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Port string
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KernelArgs string
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KernelVersion string
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}
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func IpxeSend(w http.ResponseWriter, req *http.Request) {
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url := strings.Split(req.URL.Path, "/")
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var unconfiguredNode bool
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if url[2] == "" {
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daemonLogf("ERROR: Bad iPXE request from %s\n", req.RemoteAddr)
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w.WriteHeader(404)
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return
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}
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hwaddr := strings.ReplaceAll(url[2], "-", ":")
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conf, err := warewulfconf.New()
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if err != nil {
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daemonLogf("ERROR: Could not open Warewulf configuration: %s\n", err)
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w.WriteHeader(503)
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return
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}
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nodeobj, err := GetNode(hwaddr)
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if err != nil {
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// If we failed to find a node, let's see if we can add one...
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var netdev string
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nodeDB, err := node.New()
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if err != nil {
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daemonLogf("Could not read node configuration file: %s\n", err)
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w.WriteHeader(503)
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return
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}
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daemonLogf("IPXEREQ: %s (node not configured)\n", hwaddr)
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n, netdev, err := nodeDB.FindDiscoverableNode()
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if err != nil {
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unconfiguredNode = true
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} else {
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n.NetDevs[netdev].Hwaddr.Set(hwaddr)
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n.Discoverable.SetB(false)
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err := nodeDB.NodeUpdate(n)
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if err != nil {
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daemonLogf("IPXEREQ: %s (failed to set node configuration)\n", hwaddr)
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unconfiguredNode = true
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} else {
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err := nodeDB.Persist()
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if err != nil {
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daemonLogf("IPXEREQ: %s (failed to persist node configuration)\n", hwaddr)
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unconfiguredNode = true
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} else {
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nodeobj = n
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_ = overlay.BuildAllOverlays([]node.NodeInfo{n})
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daemonLogf("IPXEREQ: %s (node automatically configured)\n", hwaddr)
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err := LoadNodeDB()
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if err != nil {
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daemonLogf("Could not reload configuration: %s\n", err)
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}
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}
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}
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}
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}
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if unconfiguredNode {
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daemonLogf("IPXEREQ: %s (unknown/unconfigured node)\n", hwaddr)
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tmpl, err := template.ParseFiles("/etc/warewulf/ipxe/unconfigured.ipxe")
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if err != nil {
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daemonLogf("ERROR: Could not parse unconfigured node IPXE template: %s\n", err)
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return
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}
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var replace iPxeTemplate
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replace.Hwaddr = hwaddr
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err = tmpl.Execute(w, replace)
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if err != nil {
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daemonLogf("ERROR: Could not update unconfigured node IPXE template: %s\n", err)
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return
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}
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return
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} else {
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ipxeTemplate := fmt.Sprintf("/etc/warewulf/ipxe/%s.ipxe", nodeobj.Ipxe.Get())
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tmpl, err := template.ParseFiles(ipxeTemplate)
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if err != nil {
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wwlog.Printf(wwlog.ERROR, "%s\n", err)
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return
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}
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var replace iPxeTemplate
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replace.Id = nodeobj.Id.Get()
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replace.Cluster = nodeobj.ClusterName.Get()
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replace.Fqdn = nodeobj.Id.Get()
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replace.Ipaddr = conf.Ipaddr
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replace.Port = strconv.Itoa(conf.Warewulf.Port)
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replace.Hostname = nodeobj.Id.Get()
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replace.Hwaddr = url[2]
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replace.ContainerName = nodeobj.ContainerName.Get()
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replace.KernelArgs = nodeobj.KernelArgs.Get()
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replace.KernelVersion = nodeobj.KernelVersion.Get()
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err = tmpl.Execute(w, replace)
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if err != nil {
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wwlog.Printf(wwlog.ERROR, "%s\n", err)
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return
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}
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daemonLogf("SEND: %15s: %s\n", nodeobj.Id.Get(), ipxeTemplate)
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updateStatus(nodeobj.Id.Get(), "IPXE_TEMPLATE", nodeobj.Ipxe.Get()+".ipxe", strings.Split(req.RemoteAddr, ":")[0])
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}
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}
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