// errorCEA sends an error answer indicating that the CER failed due to
// an unsupported (acct/auth) application, and includes the AVP that
// caused the failure in the message.
func errorCEA(sm *StateMachine, c diam.Conn, m *diam.Message, cer *smparser.CER, failedAVP *diam.AVP) error {
hostIP, _, err := net.SplitHostPort(c.LocalAddr().String())
if err != nil {
return fmt.Errorf("failed to parse own ip %q: %s", c.LocalAddr(), err)
}
var a *diam.Message
if failedAVP == cer.InbandSecurityID {
a = m.Answer(diam.NoCommonSecurity)
} else {
a = m.Answer(diam.NoCommonApplication)
}
a.Header.CommandFlags |= diam.ErrorFlag
a.NewAVP(avp.OriginHost, avp.Mbit, 0, sm.cfg.OriginHost)
a.NewAVP(avp.OriginRealm, avp.Mbit, 0, sm.cfg.OriginRealm)
a.NewAVP(avp.HostIPAddress, avp.Mbit, 0, datatype.Address(net.ParseIP(hostIP)))
a.NewAVP(avp.VendorID, avp.Mbit, 0, sm.cfg.VendorID)
a.NewAVP(avp.ProductName, 0, 0, sm.cfg.ProductName)
if cer.OriginStateID != nil {
a.AddAVP(cer.OriginStateID)
}
a.NewAVP(avp.FailedAVP, avp.Mbit, 0, &diam.GroupedAVP{
AVP: []*diam.AVP{failedAVP},
})
if sm.cfg.FirmwareRevision != 0 {
a.NewAVP(avp.FirmwareRevision, avp.Mbit, 0, sm.cfg.FirmwareRevision)
}
_, err = a.WriteTo(c)
return err
}
// successCEA sends a success answer indicating that the CER was successfuly
// parsed and accepted by the server.
func successCEA(sm *StateMachine, c diam.Conn, m *diam.Message, cer *smparser.CER) error {
hostIP, _, err := net.SplitHostPort(c.LocalAddr().String())
if err != nil {
return fmt.Errorf("failed to parse own ip %q: %s", c.LocalAddr(), err)
}
a := m.Answer(diam.Success)
a.NewAVP(avp.OriginHost, avp.Mbit, 0, sm.cfg.OriginHost)
a.NewAVP(avp.OriginRealm, avp.Mbit, 0, sm.cfg.OriginRealm)
a.NewAVP(avp.HostIPAddress, avp.Mbit, 0, datatype.Address(net.ParseIP(hostIP)))
a.NewAVP(avp.VendorID, avp.Mbit, 0, sm.cfg.VendorID)
a.NewAVP(avp.ProductName, 0, 0, sm.cfg.ProductName)
if cer.OriginStateID != nil {
a.AddAVP(cer.OriginStateID)
}
if cer.AcctApplicationID != nil {
for _, acct := range cer.AcctApplicationID {
a.AddAVP(acct)
}
}
if cer.AuthApplicationID != nil {
for _, auth := range cer.AuthApplicationID {
a.AddAVP(auth)
}
}
if cer.VendorSpecificApplicationID != nil {
for _, vs := range cer.VendorSpecificApplicationID {
a.AddAVP(vs)
}
}
if sm.cfg.FirmwareRevision != 0 {
a.NewAVP(avp.FirmwareRevision, avp.Mbit, 0, sm.cfg.FirmwareRevision)
}
_, err = a.WriteTo(c)
return err
}
func (cli *Client) makeCER(ip net.IP) *diam.Message {
m := diam.NewRequest(diam.CapabilitiesExchange, 0, cli.Dict)
m.NewAVP(avp.OriginHost, avp.Mbit, 0, cli.Handler.cfg.OriginHost)
m.NewAVP(avp.OriginRealm, avp.Mbit, 0, cli.Handler.cfg.OriginRealm)
m.NewAVP(avp.HostIPAddress, avp.Mbit, 0, datatype.Address(ip))
m.NewAVP(avp.VendorID, avp.Mbit, 0, cli.Handler.cfg.VendorID)
m.NewAVP(avp.ProductName, 0, 0, cli.Handler.cfg.ProductName)
stateid := datatype.Unsigned32(uint32(time.Now().Unix()))
m.NewAVP(avp.OriginStateID, avp.Mbit, 0, stateid)
if cli.SupportedVendorID != nil {
for _, a := range cli.SupportedVendorID {
m.AddAVP(a)
}
}
if cli.AuthApplicationID != nil {
for _, a := range cli.AuthApplicationID {
m.AddAVP(a)
}
}
m.NewAVP(avp.InbandSecurityID, avp.Mbit, 0, datatype.Unsigned32(0))
if cli.AcctApplicationID != nil {
for _, a := range cli.AcctApplicationID {
m.AddAVP(a)
}
}
if cli.VendorSpecificApplicationID != nil {
for _, a := range cli.VendorSpecificApplicationID {
m.AddAVP(a)
}
}
m.NewAVP(avp.FirmwareRevision, avp.Mbit, 0, cli.Handler.cfg.FirmwareRevision)
return m
}
func sendCEA(w io.Writer, m *diam.Message, OriginStateID, AcctApplicationID *diam.AVP) (n int64, err error) {
m.NewAVP(avp.OriginHost, avp.Mbit, 0, datatype.OctetString("srv"))
m.NewAVP(avp.OriginRealm, avp.Mbit, 0, datatype.OctetString("localhost"))
m.NewAVP(avp.HostIPAddress, avp.Mbit, 0, datatype.Address(net.ParseIP("127.0.0.1")))
m.NewAVP(avp.VendorID, avp.Mbit, 0, datatype.Unsigned32(99))
m.NewAVP(avp.ProductName, avp.Mbit, 0, datatype.UTF8String("go-diameter"))
m.AddAVP(OriginStateID)
m.AddAVP(AcctApplicationID)
return m.WriteTo(w)
}
func sendCER(w io.Writer) (n int64, err error) {
m := diam.NewRequest(diam.CapabilitiesExchange, 0, nil)
m.NewAVP(avp.OriginHost, avp.Mbit, 0, datatype.OctetString("cli"))
m.NewAVP(avp.OriginRealm, avp.Mbit, 0, datatype.OctetString("localhost"))
m.NewAVP(avp.HostIPAddress, avp.Mbit, 0, datatype.Address(net.ParseIP("127.0.0.1")))
m.NewAVP(avp.VendorID, avp.Mbit, 0, datatype.Unsigned32(99))
m.NewAVP(avp.ProductName, avp.Mbit, 0, datatype.UTF8String("go-diameter"))
m.NewAVP(avp.OriginStateID, avp.Mbit, 0, datatype.Unsigned32(1234))
m.NewAVP(avp.AcctApplicationID, avp.Mbit, 0, datatype.Unsigned32(1))
return m.WriteTo(w)
}
func TestNewMessage(t *testing.T) {
want, _ := ReadMessage(bytes.NewReader(testMessage), dict.Default)
m := NewMessage(CapabilitiesExchange, RequestFlag, 0, 0xa8cc407d, 0xa8c1b2b4, dict.Default)
m.NewAVP(avp.OriginHost, avp.Mbit, 0, datatype.DiameterIdentity("test"))
m.NewAVP(avp.OriginRealm, avp.Mbit, 0, datatype.DiameterIdentity("localhost"))
m.NewAVP(avp.HostIPAddress, avp.Mbit, 0, datatype.Address(net.ParseIP("10.1.0.1")))
m.NewAVP(avp.VendorID, avp.Mbit, 0, datatype.Unsigned32(13))
m.NewAVP(avp.ProductName, 0, 0, datatype.UTF8String("go-diameter"))
m.NewAVP(avp.OriginStateID, avp.Mbit, 0, datatype.Unsigned32(1397760650))
m.NewAVP(avp.SupportedVendorID, avp.Mbit, 0, datatype.Unsigned32(10415))
m.NewAVP(avp.SupportedVendorID, avp.Mbit, 0, datatype.Unsigned32(13))
m.NewAVP(avp.AuthApplicationID, avp.Mbit, 0, datatype.Unsigned32(4))
m.NewAVP(avp.InbandSecurityID, avp.Mbit, 0, datatype.Unsigned32(0))
m.NewAVP(avp.VendorSpecificApplicationID, avp.Mbit, 0, &GroupedAVP{
AVP: []*AVP{
NewAVP(avp.AuthApplicationID, avp.Mbit, 0, datatype.Unsigned32(4)),
NewAVP(avp.VendorID, avp.Mbit, 0, datatype.Unsigned32(10415)),
},
})
m.NewAVP(avp.FirmwareRevision, 0, 0, datatype.Unsigned32(1))
if m.Len() != want.Len() {
t.Fatalf("Unexpected message length.\nWant: %d\n%s\nHave: %d\n%s",
want.Len(), want, m.Len(), m)
}
a, err := m.Serialize()
if err != nil {
t.Fatal(err)
}
b, _ := want.Serialize()
if !bytes.Equal(a, b) {
t.Fatalf("Unexpected message.\nWant:\n%s\n%s\nHave:\n%s\n%s",
want, hex.Dump(b), m, hex.Dump(a))
}
t.Logf("%d bytes\n%s", len(a), m)
t.Logf("Message:\n%s", hex.Dump(a))
}
var acctDictionary = `<?xml version="1.0" encoding="UTF-8"?>
<diameter>
<application id="1001" type="acct">
</application>
</diameter>
`
var authDictionary = `<?xml version="1.0" encoding="UTF-8"?>
<diameter>
<application id="1002" type="auth">
</application>
</diameter>
`
var (
localhostAddress = datatype.Address(net.ParseIP("127.0.0.1"))
serverSettings = &Settings{
OriginHost: "srv",
OriginRealm: "test",
VendorID: 13,
ProductName: "go-diameter",
OriginStateID: datatype.Unsigned32(time.Now().Unix()),
FirmwareRevision: 1,
}
clientSettings = &Settings{
OriginHost: "cli",
OriginRealm: "test",
VendorID: 13,
ProductName: "go-diameter",