117 lines
2.8 KiB
Go
117 lines
2.8 KiB
Go
package main
|
|
|
|
import (
|
|
"encoding/json"
|
|
"math/rand"
|
|
"net"
|
|
"net/http"
|
|
)
|
|
|
|
func handleDHCPStatus(w http.ResponseWriter, r *http.Request) {
|
|
status := map[string]interface{}{
|
|
"config": config.DHCP.Config,
|
|
"leases": config.DHCP.Leases,
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
err := json.NewEncoder(w).Encode(status)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Unable to marshal DHCP status json: %s", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
func handleDHCPSetConfig(w http.ResponseWriter, r *http.Request) {
|
|
newconfig := dhcpConfig{}
|
|
err := json.NewDecoder(r.Body).Decode(&newconfig)
|
|
if err != nil {
|
|
httpError(w, http.StatusBadRequest, "Failed to parse new DHCP config json: %s", err)
|
|
return
|
|
}
|
|
|
|
config.DHCP.Config = newconfig
|
|
}
|
|
|
|
func handleDHCPInterfaces(w http.ResponseWriter, r *http.Request) {
|
|
response := map[string]interface{}{}
|
|
|
|
ifaces, err := net.Interfaces()
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Couldn't get list of interfaces: %s", err)
|
|
return
|
|
}
|
|
|
|
type address struct {
|
|
IP string
|
|
Netmask string
|
|
}
|
|
|
|
type responseInterface struct {
|
|
Name string
|
|
MTU int
|
|
HardwareAddr string
|
|
Addresses []string
|
|
}
|
|
|
|
for i := range ifaces {
|
|
if ifaces[i].Flags&net.FlagLoopback != 0 {
|
|
// it's a loopback, skip it
|
|
continue
|
|
}
|
|
if ifaces[i].Flags&net.FlagBroadcast == 0 {
|
|
// this interface doesn't support broadcast, skip it
|
|
continue
|
|
}
|
|
if ifaces[i].Flags&net.FlagPointToPoint != 0 {
|
|
// this interface is ppp, don't do dhcp over it
|
|
continue
|
|
}
|
|
iface := responseInterface{
|
|
Name: ifaces[i].Name,
|
|
MTU: ifaces[i].MTU,
|
|
HardwareAddr: ifaces[i].HardwareAddr.String(),
|
|
}
|
|
addrs, err := ifaces[i].Addrs()
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Failed to get addresses for interface %v: %s", ifaces[i].Name, err)
|
|
return
|
|
}
|
|
for _, addr := range addrs {
|
|
// ip, ok := addr.(*net.IPNet)
|
|
// if !ok {
|
|
// // not an IP address
|
|
// continue
|
|
// }
|
|
// responseAddr := address{
|
|
// IP: ip.IP.String(),
|
|
// Netmask: ip.Mask.String(),
|
|
// }
|
|
iface.Addresses = append(iface.Addresses, addr.String())
|
|
}
|
|
if len(iface.Addresses) == 0 {
|
|
// this interface has no addresses, skip it
|
|
continue
|
|
}
|
|
response[ifaces[i].Name] = iface
|
|
}
|
|
|
|
err = json.NewEncoder(w).Encode(response)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Failed to marshal json with available interfaces: %s", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
// TODO: implement
|
|
func handleDHCPFindActiveServer(w http.ResponseWriter, r *http.Request) {
|
|
found := map[string]bool{
|
|
"found": rand.Intn(2) == 1,
|
|
}
|
|
w.Header().Set("Content-Type", "application/json")
|
|
err := json.NewEncoder(w).Encode(found)
|
|
if err != nil {
|
|
httpError(w, http.StatusInternalServerError, "Failed to marshal DHCP found json: %s", err)
|
|
return
|
|
}
|
|
}
|