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package api
import (
"encoding/json"
"log"
"net"
"github.com/cilium/cilium/pkg/mac"
"sinanmohd.com/redq/bpf/filter"
)
type FilterResp map[string]string
func handleFilterBlock(conn net.Conn, f *filter.Filter, macs []string) {
resp := make(FilterResp)
for _, mac_string := range macs {
mac, err := mac.ParseMAC(mac_string)
if err != nil {
resp[mac_string] = err.Error()
continue
}
mac_cilium64, err := mac.Uint64()
if err != nil {
resp[mac_string] = err.Error()
continue
}
err = f.Block(uint64(mac_cilium64))
if err != nil {
resp[mac_string] = err.Error()
continue
}
resp[mac_string] = "blocked"
}
buf, err := json.Marshal(resp)
if err != nil {
log.Printf("marshaling json: %s", err)
return
}
conn.Write(buf)
}
func handleFilterUnblock(conn net.Conn, f *filter.Filter, macs []string) {
resp := make(FilterResp)
for _, mac_string := range macs {
mac, err := mac.ParseMAC(mac_string)
if err != nil {
resp[mac_string] = err.Error()
continue
}
mac_cilium64, err := mac.Uint64()
if err != nil {
resp[mac_string] = err.Error()
continue
}
err = f.Unblock(uint64(mac_cilium64))
if err != nil {
resp[mac_string] = err.Error()
continue
}
resp[mac_string] = "unblocked"
}
buf, err := json.Marshal(resp)
if err != nil {
log.Printf("marshaling json: %s", err)
return
}
conn.Write(buf)
}
func handleFilter(conn net.Conn, f *filter.Filter, macs []string, action string) {
switch action {
case "block":
handleFilterBlock(conn, f, macs)
case "unblock":
handleFilterUnblock(conn, f, macs)
default:
log.Printf("handling dns: invalid action '%s'", action)
}
}
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