rclone/cmd/serve/dlna/dlna_util.go
Dan Walters 60bb01b22c dlna: refactor the serve mux
Trying to make it a little easier to understand and work on all the
available routes, etc.
2019-05-27 14:42:33 +01:00

81 lines
2.0 KiB
Go

package dlna
import (
"crypto/md5"
"encoding/xml"
"fmt"
"io"
"log"
"net"
"net/http"
"github.com/anacrolix/dms/soap"
"github.com/anacrolix/dms/upnp"
)
func makeDeviceUUID(unique string) string {
h := md5.New()
if _, err := io.WriteString(h, unique); err != nil {
log.Panicf("makeDeviceUUID write failed: %s", err)
}
buf := h.Sum(nil)
return upnp.FormatUUID(buf)
}
// Get all available active network interfaces.
func listInterfaces() []net.Interface {
ifs, err := net.Interfaces()
if err != nil {
log.Printf("list network interfaces: %v", err)
return []net.Interface{}
}
var active []net.Interface
for _, intf := range ifs {
if intf.Flags&net.FlagUp == 0 || intf.MTU <= 0 {
continue
}
active = append(active, intf)
}
return active
}
func didlLite(chardata string) string {
return `<DIDL-Lite` +
` xmlns:dc="http://purl.org/dc/elements/1.1/"` +
` xmlns:upnp="urn:schemas-upnp-org:metadata-1-0/upnp/"` +
` xmlns="urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/"` +
` xmlns:dlna="urn:schemas-dlna-org:metadata-1-0/">` +
chardata +
`</DIDL-Lite>`
}
func mustMarshalXML(value interface{}) []byte {
ret, err := xml.MarshalIndent(value, "", " ")
if err != nil {
log.Panicf("mustMarshalXML failed to marshal %v: %s", value, err)
}
return ret
}
// Marshal SOAP response arguments into a response XML snippet.
func marshalSOAPResponse(sa upnp.SoapAction, args map[string]string) []byte {
soapArgs := make([]soap.Arg, 0, len(args))
for argName, value := range args {
soapArgs = append(soapArgs, soap.Arg{
XMLName: xml.Name{Local: argName},
Value: value,
})
}
return []byte(fmt.Sprintf(`<u:%[1]sResponse xmlns:u="%[2]s">%[3]s</u:%[1]sResponse>`,
sa.Action, sa.ServiceURN.String(), mustMarshalXML(soapArgs)))
}
// HTTP handler that sets headers.
func withHeader(name string, value string, next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set(name, value)
next.ServeHTTP(w, r)
})
}