internal static int GetRfcommChannelNumber(ServiceElement channelElement)
{
Debug.Assert(channelElement != null, "channelElement != null");
System.Diagnostics.Debug.Assert(channelElement.ElementType == ElementType.UInt8);
byte value = (byte)channelElement.Value;
return(value);
}
/// <exclude/>
protected virtual int CreateAttrId(ServiceAttributeId attrId, byte[] buf, int offset)
{
ServiceElement dummyElement
= new ServiceElement(
ElementType.UInt16, unchecked ((UInt16)attrId));
return(CreateElement(dummyElement, buf, offset));
}
public ServiceElement[] GetValueAsElementArray()
{
IList <ServiceElement> list = GetValueAsElementList();
ServiceElement[] arr = new ServiceElement[list.Count];
GetValueAsElementList().CopyTo(arr, 0);
return(arr);
}
internal static int GetL2CapChannelNumber(ServiceElement channelElement)
{
Debug.Assert(channelElement != null, "channelElement != null");
System.Diagnostics.Debug.Assert(channelElement.ElementType == ElementType.UInt16);
var value = (UInt16)channelElement.Value;
return(value);
}
private void WriteInt64(ServiceElement element, Int64 value, byte[] buf, ref int offset, out int totalLength)
{
Int64 host64 = value;
Int64 net64 = IPAddress.HostToNetworkOrder(host64);
byte[] valueBytes = BitConverter.GetBytes(net64);
WriteFixedLength(element, valueBytes, buf, ref offset, out totalLength);
}
protected virtual void WriteFixedLength(ServiceElement element, byte[] valueBytes, byte[] buf, ref int offset, out int totalLength)
{
int headerLen = WriteHeaderFixedLength(element.ElementTypeDescriptor, valueBytes.Length, buf, offset, out totalLength);
offset += headerLen;
VerifyWriteSpaceRemaining(valueBytes.Length, buf, offset);
valueBytes.CopyTo(buf, offset);
System.Diagnostics.Debug.Assert(totalLength == headerLen + valueBytes.Length);
}
/// <summary>
/// Reads the L2CAP Channel Number value from the service record,
/// or returns -1 if the element is not present.
/// </summary>
/// -
/// <param name="record">The <see cref="T:InTheHand.Net.Bluetooth.ServiceRecord"/>
/// to search for the element.
/// </param>
/// -
/// <returns>The PSM number as an uint16 cast to an Int32,
/// or -1 if at the <see cref="F:InTheHand.Net.Bluetooth.AttributeIds.UniversalAttributeId.ProtocolDescriptorList"/>
/// attribute is missing or contains invalid elements.
/// </returns>
public static int GetL2CapChannelNumber(ServiceRecord record)
{
ServiceElement channelElement = GetL2CapChannelElement(record);
if (channelElement == null)
{
return(-1);
}
return(GetL2CapChannelNumber(channelElement));
}
/// <summary>
/// Sets the RFCOMM Channel Number value in the service record.
/// </summary>
/// -
/// <param name="record">The <see cref="T:InTheHand.Net.Bluetooth.ServiceRecord"/>
/// in which to set the RFCOMM Channel number.
/// </param>
/// <param name="channelNumber">The Channel number to set in the record.
/// </param>
/// -
/// <exception cref="T:System.InvalidOperationException">The
/// <see cref="F:InTheHand.Net.Bluetooth.AttributeIds.UniversalAttributeId.ProtocolDescriptorList"/>
/// attribute is missing or contains invalid elements.
/// </exception>
public static void SetRfcommChannelNumber(ServiceRecord record, byte channelNumber)
{
ServiceElement channelElement = GetRfcommChannelElement(record);
if (channelElement == null)
{
throw new InvalidOperationException("ProtocolDescriptorList element does not exist or is not in the RFCOMM format.");
}
System.Diagnostics.Debug.Assert(channelElement.ElementType == ElementType.UInt8);
channelElement.SetValue(channelNumber);
}
protected virtual void WriteVariableLength(ServiceElement element, byte[] valueBytes, byte[] buf, ref int offset, out int totalLength)
{
HeaderWriteState headerState;
int curLen;
curLen = MakeVariableLengthHeader(buf, offset, element.ElementTypeDescriptor, out headerState);
offset += curLen;
VerifyWriteSpaceRemaining(valueBytes.Length, buf, offset);
valueBytes.CopyTo(buf, offset);//write
offset += valueBytes.Length;
CompleteHeaderWrite(headerState, buf, offset, out totalLength);
}
public String GetMultiLanguageStringAttributeById(ServiceAttributeId id, LanguageBaseItem language)
{
if (language == null)
{
throw new ArgumentNullException("language");
}
ServiceAttributeId actualId = CreateLanguageBasedAttributeId(id, language.AttributeIdBase);
ServiceAttribute attr = GetAttributeById(actualId);
ServiceElement element = attr.Value;
// (No need to check that element is of type TextString, that's handled inside the following).
String str = element.GetValueAsString(language);
return(str);
}
/// <summary>
/// Get the enum-like class containing the Service Attribute Id definitions
/// for the type of the Service Class contained in the given
/// <see cref="F:InTheHand.Net.Bluetooth.AttributeIds.UniversalAttributeId.ServiceClassIdList"/>
/// (type <see cref="F:InTheHand.Net.Bluetooth.ElementTypeDescriptor.Uuid"/>) data element.
/// </summary>
/// -
/// <param name="idElement">A <see cref="T:InTheHand.Net.Bluetooth.ServiceElement"/>
/// of 'UUID' type containing the Service Class to search for.
/// </param>
/// -
/// <returns>
/// A <see cref="T:System.Type"/> object representing the enum-like class
/// holding the Attribute Id definitions, or null if the Service Class is
/// unknown or the element is not of <see cref="F:InTheHand.Net.Bluetooth.ElementTypeDescriptor.Uuid"/>
/// type.
/// </returns>
/// -
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="idElement"/> is null.
/// </exception>
protected virtual Type GetAttributeIdEnumType(ServiceElement idElement)
{
if (idElement == null)
{
throw new ArgumentNullException("idElement");
}
//
if (idElement.ElementTypeDescriptor != ElementTypeDescriptor.Uuid)
{
return(null);
}
Guid uuid = idElement.GetValueAsUuid();
//
return(GetAttributeIdEnumType(uuid));
}
/// <summary>
/// Add a custom attribute of simple type.
/// </summary>
/// -
/// <remarks>
/// <para>If the <paramref name="elementType"/> is a numerical type
/// then this is equivalent to using
/// <see cref="M:InTheHand.Net.Bluetooth.ServiceElement.CreateNumericalServiceElement(InTheHand.Net.Bluetooth.ElementType,System.Object)"/>
/// otherwise the value is used directly in creating the
/// <see cref="T:InTheHand.Net.Bluetooth.ServiceElement"/>.
/// </para>
/// </remarks>
/// -
/// <param name="id">The Attribute Id as a <see cref="T:InTheHand.Net.Bluetooth.ServiceAttributeId"/>.</param>
/// <param name="elementType">The type of the element as an <see cref="T:InTheHand.Net.Bluetooth.ElementType"/>.</param>
/// <param name="value">The value for the new element.</param>
public void AddCustomAttribute(ServiceAttributeId id, ElementType elementType, object value)
{
ServiceElement e;
ElementTypeDescriptor etd = ServiceRecordParser.GetEtdForType(elementType);
if ((etd == ElementTypeDescriptor.UnsignedInteger ||
etd == ElementTypeDescriptor.TwosComplementInteger))
{
e = ServiceElement.CreateNumericalServiceElement(elementType, value);
}
else
{
e = new ServiceElement(elementType, value);
}
this.AddCustomAttribute(new ServiceAttribute(id, e));
}
private static ServiceElement CreatePdlLayer(UInt16 uuid, params ServiceElement[] data)
{
IList <ServiceElement> curSeqChildren;
ServiceElement curValueElmt, curSeqElmt;
//
curSeqChildren = new List <ServiceElement>();
curValueElmt = new ServiceElement(ElementType.Uuid16, uuid);
curSeqChildren.Add(curValueElmt);
foreach (ServiceElement element in data)
{
curSeqChildren.Add(element);
}
curSeqElmt = new ServiceElement(ElementType.ElementSequence, curSeqChildren);
return(curSeqElmt);
}
private static ServiceElement ServiceElementFromUuid(object classRaw)
{
ServiceElement tmp = null;
UInt32 classU32 = 99;
bool writeIntegral;
// First check raw type, and also if u16/u32 inside Guid.
// If Guid write it, otherwise handle all integral value.
if (classRaw is Guid)
{
Guid uuid128 = (Guid)classRaw;
if (ServiceRecordUtilities.IsUuid32Value(uuid128))
{
classU32 = ServiceRecordUtilities.GetAsUuid32Value(uuid128);
writeIntegral = true;
}
else
{
tmp = new ServiceElement(ElementType.Uuid128, uuid128);
writeIntegral = false;
}
}
else
{
System.Diagnostics.Debug.Assert(classRaw != null,
"Unexpected ServiceClassId value: null");
System.Diagnostics.Debug.Assert(classRaw is Int32,
"Unexpected ServiceClassId type: " + classRaw.GetType().Name);
Int32 i32 = (Int32)classRaw;
classU32 = unchecked ((UInt32)i32);
writeIntegral = true;
}
if (writeIntegral)
{
try {
UInt16 u16 = Convert.ToUInt16(classU32);
Debug.Assert(classU32 <= UInt16.MaxValue, "NOT replace the throw, LTE");
tmp = new ServiceElement(ElementType.Uuid16, u16);
} catch (OverflowException) {
Debug.Assert(classU32 > UInt16.MaxValue, "NOT replace the throw, GT");
tmp = new ServiceElement(ElementType.Uuid32, classU32);
}
}
return(tmp);
}
/// <summary>
/// Creates the data element for the
/// <see cref="F:InTheHand.Net.Bluetooth.AttributeIds.UniversalAttributeId.ProtocolDescriptorList"/>
/// attribute in an L2CAP service,
/// with upper layer entries.
/// </summary>
/// -
/// <returns>The new <see cref="T:InTheHand.Net.Bluetooth.ServiceElement"/>.</returns>
/// -
/// <remarks>Thus is the following structure at the first layer:
/// <code lang="none">
/// ElementSequence
/// ElementSequence
/// Uuid16 = L2CAP
/// UInt16 = 0 -- The L2CAP PSM Number.
/// </code>
/// One can add layers above that; remember that all layers are formed
/// of an ElementSequence. See the example below.
/// </remarks>
/// -
/// <example>
/// <code>
/// var netProtoList = new ServiceElement(ElementType.ElementSequence,
/// ServiceElement.CreateNumericalServiceElement(ElementType.UInt16, 0x0800),
/// ServiceElement.CreateNumericalServiceElement(ElementType.UInt16, 0x0806)
/// );
/// var layer1 = new ServiceElement(ElementType.ElementSequence,
/// new ServiceElement(ElementType.Uuid16, Uuid16_BnepProto),
/// ServiceElement.CreateNumericalServiceElement(ElementType.UInt16, 0x0100), //v1.0
/// netProtoList
/// );
/// ServiceElement element = ServiceRecordHelper.CreateL2CapProtocolDescriptorListWithUpperLayers(
/// layer1);
/// </code>
/// </example>
/// -
/// <param name="upperLayers">The list of upper layer elements, one per layer.
/// As an array.
/// </param>
public static ServiceElement CreateL2CapProtocolDescriptorListWithUpperLayers(params ServiceElement[] upperLayers)
{
IList <ServiceElement> baseChildren = new List <ServiceElement>();
baseChildren.Add(CreatePdlLayer((UInt16)ServiceRecordUtilities.HackProtocolId.L2Cap,
new ServiceElement(ElementType.UInt16, (UInt16)0)));
foreach (ServiceElement nextLayer in upperLayers)
{
if (nextLayer.ElementType != ElementType.ElementSequence)
{
throw new ArgumentException("Each layer in a ProtocolDescriptorList must be an ElementSequence.");
}
baseChildren.Add(nextLayer);
}//for
ServiceElement baseElement = new ServiceElement(ElementType.ElementSequence, baseChildren);
return(baseElement);
}
private static void DumpProtocolDescriptorList(TextWriter writer, int depth, ServiceElement element)
{
Debug.Assert(element.ElementType == ElementType.ElementAlternative ||
element.ElementType == ElementType.ElementSequence);
//
// If passes a list of alternatives, each a protocol descriptor list,
// then call ourselves on each list.
if (element.ElementType == ElementType.ElementAlternative)
{
foreach (ServiceElement curStack in element.GetValueAsElementList())
{
DumpProtocolDescriptorListList(writer, depth + 1, curStack);
}//foreach
return;
}
//else
DumpProtocolDescriptorListList(writer, depth, element);
}
private static void DumpRawElement(TextWriter writer, int depth, ServiceElement elem)
{
WritePrefix(writer, depth);
if (elem.ElementType == ElementType.ElementSequence ||
elem.ElementType == ElementType.ElementAlternative)
{
writer.WriteLine("{0}", elem.ElementType);
foreach (ServiceElement element in elem.GetValueAsElementList())
{
DumpRawElement(writer, depth + 1, element);
}
}
else if (elem.ElementType == ElementType.Nil)
{
writer.WriteLine("Nil:");
}
else if (elem.ElementType == ElementType.TextString ||
elem.ElementType == ElementType.Boolean ||
elem.ElementType == ElementType.Url)
{
// Non-numeric types
writer.WriteLine("{0}: {1}", elem.ElementType, elem.Value);
}
else if (elem.ElementType == ElementType.Uuid128)
{
writer.WriteLine("{0}: {1}", elem.ElementType, elem.Value);
}
else if (elem.ElementType == ElementType.UInt128 ||
elem.ElementType == ElementType.Int128)
{
string valueText = BitConverter.ToString((byte[])elem.Value);
writer.WriteLine("{0}: {1}", elem.ElementType, valueText);
}
else
{
writer.WriteLine("{0}: 0x{1:X}", elem.ElementType, elem.Value);
//{catch(?FOrmatExptn){
// writer.WriteLine("{0}: 0x{1}", elem.Type, elem.Value);
//}
}
}
/// <summary>
/// Sets the RFCOMM Channel Number value in the service record.
/// </summary>
/// -
/// <remarks>
/// <para>Note: We use an <see cref="T:System.Int32"/> for the
/// <paramref name="psm"/> parameter as its natural type <see cref="T:System.UInt16"/>
/// in not usable in CLS Compliant interfaces.
/// </para>
/// </remarks>
/// -
/// <param name="record">The <see cref="T:InTheHand.Net.Bluetooth.ServiceRecord"/>
/// in which to set the L2CAP PSM value.
/// </param>
/// <param name="psm">The PSM value to set in the record.
/// Note that although the parameter is of type <see cref="T:System.Int32"/>
/// the value must actually be in the range of a <see cref="T:System.UInt16"/>,
/// see the remarks for more information.
/// </param>
/// -
/// <exception cref="T:System.InvalidOperationException">The
/// <see cref="F:InTheHand.Net.Bluetooth.AttributeIds.UniversalAttributeId.ProtocolDescriptorList"/>
/// attribute is missing or contains invalid elements.
/// </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// The PSM must fit in a 16-bit unsigned integer.
/// </exception>
public static void SetL2CapPsmNumber(ServiceRecord record, int psm)
{
if (psm < 0 || psm > UInt16.MaxValue)
{
throw new ArgumentOutOfRangeException("psm", "A PSM is a UInt16 value.");
}
var psm16 = checked ((UInt16)psm);
ServiceElement rfcommElement = GetRfcommChannelElement(record);
if (rfcommElement != null)
{
Debug.WriteLine("Setting L2CAP PSM for a PDL that includes RFCOMM.");
}
ServiceElement channelElement = GetChannelElement(record, BluetoothProtocolDescriptorType.L2Cap);
if (channelElement == null ||
channelElement.ElementType != ElementType.UInt16)
{
throw new InvalidOperationException("ProtocolDescriptorList element does not exist, is not in the L2CAP format, or it the L2CAP layer has no PSM element.");
}
channelElement.SetValue(psm16);
}
/// <summary>
/// Get a list of enum-like classes containing Service Attribute Id definitions
/// for the type of the Service Class contained in the given Service Record.
/// </summary>
/// -
/// <param name="record">A <see cref="T:InTheHand.Net.Bluetooth.ServiceRecord"/>
/// whose <see cref="F:InTheHand.Net.Bluetooth.AttributeIds.UniversalAttributeId.ServiceClassIdList"/>
/// element will be retrieved, and its Service Class Id will used
/// for the lookup.
/// </param>
/// -
/// <returns>
/// An array of <see cref="T:System.Type"/> each of which is a enum-like class
/// which defines the set of Service Attribute IDs used by a particular
/// Service Class e.g. ObjectPushProfile.
/// An empty array will be returned if none of the Service Classes
/// are known, or the record contains no
/// <see cref="F:InTheHand.Net.Bluetooth.AttributeIds.UniversalAttributeId.ServiceClassIdList"/>
/// attribute, or it is invalid.
/// <note>Currently only the first Service Class Id is looked-up.</note>
/// </returns>
/// -
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="record"/> is null.
/// </exception>
public Type[] GetAttributeIdEnumTypes(ServiceRecord record)
{
if (record == null)
{
throw new ArgumentNullException("record");
}
//
ServiceAttribute attr;
try {
attr = record.GetAttributeById(UniversalAttributeId.ServiceClassIdList);
} catch (System.Collections.Generic.KeyNotFoundException ex) {
System.Diagnostics.Debug.Assert(ex.Message == ServiceRecord.ErrorMsgNoAttributeWithId);
goto InvalidRecord;
}
ServiceElement element = attr.Value;
if (element.ElementType != ElementType.ElementSequence)
{
goto InvalidRecord;
}
ServiceElement[] idElements = element.GetValueAsElementArray();
//TODO ((GetServiceClassSpecificAttributeIdEnumDefiningType--foreach (ServiceElement curIdElem in idElements) {))
if (idElements.Length != 0)
{
ServiceElement curIdElem = idElements[0];
Type enumType = GetAttributeIdEnumType(curIdElem);
if (enumType != null)
{
return(new Type[] { enumType });
}
}//else fall through...
// None-matched, or invalid attribute format etc.
InvalidRecord:
return(new Type[0]);
}
private void WriteByte(ServiceElement element, Byte value, byte[] buf, ref int offset, out int totalLength)
{
byte[] valueBytes = new byte[1];
valueBytes[0] = value;
WriteFixedLength(element, valueBytes, buf, ref offset, out totalLength);
}
private static void DumpProtocolDescriptorListList(TextWriter writer, int depth, ServiceElement element)
{
// The list.
Debug.Assert(element.ElementType == ElementType.ElementSequence);
WritePrefix(writer, depth);
writer.Write("( ");
bool firstLayer = true;
foreach (ServiceElement layer in element.GetValueAsElementList())
{
ServiceElement[] items = layer.GetValueAsElementArray();
int used = 0;
Debug.Assert(items[used].ElementTypeDescriptor == ElementTypeDescriptor.Uuid);
Guid protoGuid = items[used].GetValueAsUuid();
string protoStr;
HackProtocolId proto = GuidToHackProtocolId(protoGuid, out protoStr);
//
used++;
writer.Write("{0}( {1}", (firstLayer ? string.Empty : ", "), protoStr);
if (proto == HackProtocolId.L2Cap)
{
if (used < items.Length)
{
Debug.Assert(items[used].ElementType == ElementType.UInt16);
var u16 = (ushort)items[used].Value;
HackProtocolServiceMultiplexer psm = unchecked ((HackProtocolServiceMultiplexer)u16);
used++;
writer.Write(", PSM={0}", Enum_ToStringNameOrHex(psm));
}
}
else if (proto == HackProtocolId.Rfcomm)
{
if (used < items.Length)
{
Debug.Assert(items[used].ElementType == ElementType.UInt8);
byte channelNumber = (byte)items[used].Value;
used++;
writer.Write(", ChannelNumber={0}", channelNumber);
}
}
// Others include BNEP for instance, which isn't defined in the base SDP spec.
if (used < items.Length)
{
writer.Write(", ...");
}
writer.Write(" )");
firstLayer = false;
}//foreach layer
writer.WriteLine(" )");
}
// TODO GetRfcommChannelElement(ServiceAttribute attr) Could be public -> Tests!
internal static ServiceElement GetChannelElement(ServiceAttribute attr,
BluetoothProtocolDescriptorType proto,
out bool?isSimpleRfcomm)
{
if (proto != BluetoothProtocolDescriptorType.L2Cap &&
proto != BluetoothProtocolDescriptorType.Rfcomm)
{
throw new ArgumentException("Can only fetch RFCOMM or L2CAP element.");
}
//
isSimpleRfcomm = true;
Debug.Assert(attr != null, "attr != null");
ServiceElement e0 = attr.Value;
if (e0.ElementType == ElementType.ElementAlternative)
{
Trace.WriteLine("Don't support ElementAlternative ProtocolDescriptorList values.");
goto NotFound;
}
else if (e0.ElementType != ElementType.ElementSequence)
{
Trace.WriteLine("Bad ProtocolDescriptorList base element.");
goto NotFound;
}
IList <ServiceElement> protoStack = e0.GetValueAsElementList();
IEnumerator <ServiceElement> etor = protoStack.GetEnumerator();
ServiceElement layer;
IList <ServiceElement> layerContent;
ServiceElement channelElement;
// -- L2CAP Layer --
if (!etor.MoveNext())
{
Trace.WriteLine(string.Format(CultureInfo.InvariantCulture,
"Protocol stack truncated before {0}.", "L2CAP"));
goto NotFound;
}
layer = etor.Current; //cast here are for non-Generic version.
layerContent = layer.GetValueAsElementList();
if (layerContent[0].GetValueAsUuid() != BluetoothProtocol.L2CapProtocol)
{
Trace.WriteLine(String.Format(CultureInfo.InvariantCulture,
"Bad protocol stack, layer {0} is not {1}.", 1, "L2CAP"));
goto NotFound;
}
bool hasPsmEtc = layerContent.Count != 1;
// Cast for FX1.1 object
isSimpleRfcomm = (bool)isSimpleRfcomm && !hasPsmEtc;
if (proto == BluetoothProtocolDescriptorType.L2Cap)
{
if (layerContent.Count < 2)
{
Trace.WriteLine("L2CAP PSM element was requested but the L2CAP layer in this case hasn't a second element.");
goto NotFound;
}
channelElement = (ServiceElement)layerContent[1];
goto Success;
}
//
// -- RFCOMM Layer --
if (!etor.MoveNext())
{
Trace.WriteLine(string.Format(CultureInfo.InvariantCulture,
"Protocol stack truncated before {0}.", "RFCOMM"));
goto NotFound;
}
layer = etor.Current;
layerContent = layer.GetValueAsElementList();
if (layerContent[0].GetValueAsUuid() != BluetoothProtocol.RFCommProtocol)
{
Trace.WriteLine(String.Format(CultureInfo.InvariantCulture,
"Bad protocol stack, layer {0} is not {1}.", 2, "RFCOMM"));
goto NotFound;
}
//
if (layerContent.Count < 2)
{
Trace.WriteLine(String.Format(CultureInfo.InvariantCulture,
"Bad protocol stack, layer {0} hasn't a second element.", 2));
goto NotFound;
}
channelElement = (ServiceElement)layerContent[1];
if (channelElement.ElementType != ElementType.UInt8)
{
Trace.WriteLine(String.Format(CultureInfo.InvariantCulture,
"Bad protocol stack, layer {0} is not UInt8.", 2));
goto NotFound;
}
// Success
//
// -- Any remaining layer(s) --
bool extraLayers = etor.MoveNext();
isSimpleRfcomm = (bool)isSimpleRfcomm && !extraLayers;
Success:
//
return(channelElement);
NotFound:
isSimpleRfcomm = null;
return(null);
}
private static void DumpElement(TextWriter writer, int depth, ServiceElement elem)
{
WritePrefix(writer, depth);
if (elem.ElementType == ElementType.ElementSequence || elem.ElementType == ElementType.ElementAlternative)
{
writer.WriteLine("{0}", elem.ElementType);
foreach (ServiceElement element in elem.GetValueAsElementList())
{
DumpElement(writer, depth + 1, element);
}//for
}
else if (elem.ElementType == ElementType.Nil)
{
writer.WriteLine("Nil:");
}
else if (elem.ElementType == ElementType.TextString)
{
DumpString(writer, depth, elem, null);
}
else if (elem.ElementType == ElementType.Boolean ||
elem.ElementType == ElementType.Url)
{
// Non-numeric types
writer.WriteLine("{0}: {1}", elem.ElementType, elem.Value);
}
else
{
string name = null;
string valueText = null;
if (elem.ElementTypeDescriptor == ElementTypeDescriptor.Uuid)
{
if (elem.ElementType == ElementType.Uuid16)
{
name = BluetoothService.GetName((ushort)elem.Value);
}
else if (elem.ElementType == ElementType.Uuid32)
{
name = BluetoothService.GetName((uint)elem.Value);
}
else
{
Debug.Assert(elem.ElementType == ElementType.Uuid128);
name = BluetoothService.GetName((Guid)elem.Value);
valueText = ((Guid)elem.Value).ToString();
}
}//if UUID
if (valueText == null)
{
if (elem.ElementTypeDescriptor == ElementTypeDescriptor.Unknown)
{
valueText = "unknown";
}
else if (elem.ElementType == ElementType.UInt128 ||
elem.ElementType == ElementType.Int128)
{
valueText = BitConverter.ToString((byte[])elem.Value);
}
else
{
valueText = string.Format(System.Globalization.CultureInfo.InvariantCulture, "0x{0:X}", elem.Value);
}
}
if (name == null)
{
writer.WriteLine("{0}: {1}", elem.ElementType, valueText);
}
else
{
writer.WriteLine("{0}: {1} -- {2}", elem.ElementType, valueText, name);
}
}//else
}
//--------------------------------------------------------------
/// <summary>
/// Initializes a new instance of the <see cref="T:InTheHand.Net.Bluetooth.ServiceAttribute"/> class.
/// </summary>
/// -
/// <param name="id">The Attribute Id as a <see cref="T:InTheHand.Net.Bluetooth.ServiceAttributeId"/>.</param>
/// <param name="value">The value as a <see cref="T:InTheHand.Net.Bluetooth.ServiceElement"/>.</param>
public ServiceAttribute(ServiceAttributeId id, ServiceElement value)
{
m_id = id;
m_element = value;
}
[CLSCompliant(false)] // instead use .ctor(ServiceAttributeId,AttributeValue).
public ServiceAttribute(ushort id, ServiceElement value)
: this(unchecked ((ServiceAttributeId)(Int16)id), value)
{
}
/// <summary>
/// Create the element in the buffer starting at offset, and return its totalLength.
/// </summary>
/// <param name="element">The element to create.
/// </param>
/// <param name="buf">The byte array to write the encoded element to.
/// </param>
/// <param name="offset">The place to start writing in <paramref name="buf"/>.
/// </param>
///
/// <returns>The total length of the encoded element written to the buffer
/// </returns>
protected virtual int CreateElement(ServiceElement element, byte[] buf, int offset)
{
int totalLength;
//
if (element.ElementTypeDescriptor == ElementTypeDescriptor.ElementSequence ||
element.ElementTypeDescriptor == ElementTypeDescriptor.ElementAlternative)
{
HeaderWriteState headerState;
int curLen;
curLen = MakeVariableLengthHeader(buf, offset, element.ElementTypeDescriptor, out headerState);
offset += curLen;
foreach (ServiceElement childElement in element.GetValueAsElementList())
{
curLen = CreateElement(childElement, buf, offset);
offset += curLen;
}//for
CompleteHeaderWrite(headerState, buf, offset, out totalLength);
//----------------
}
else if (element.ElementTypeDescriptor == ElementTypeDescriptor.UnsignedInteger ||
element.ElementTypeDescriptor == ElementTypeDescriptor.TwosComplementInteger)
{
switch (element.ElementType)
{
case ElementType.UInt8:
WriteByte(element, (Byte)element.Value, buf, ref offset, out totalLength);
break;
case ElementType.Int8:
WriteSByte(element, (SByte)element.Value, buf, ref offset, out totalLength);
break;
case ElementType.UInt16:
WriteUInt16(element, (UInt16)element.Value, buf, ref offset, out totalLength);
break;
case ElementType.Int16:
WriteInt16(element, (Int16)element.Value, buf, ref offset, out totalLength);
break;
case ElementType.UInt32:
WriteUInt32(element, (UInt32)element.Value, buf, ref offset, out totalLength);
break;
case ElementType.Int32:
WriteInt32(element, (Int32)element.Value, buf, ref offset, out totalLength);
break;
case ElementType.UInt64:
WriteUInt64(element, (UInt64)element.Value, buf, ref offset, out totalLength);
break;
case ElementType.Int64:
WriteInt64(element, (Int64)element.Value, buf, ref offset, out totalLength);
break;
default:
System.Diagnostics.Debug.Fail(String.Format(System.Globalization.CultureInfo.InvariantCulture,
"Unexpected integral type '{0}'.", element.ElementType));
totalLength = 0;
break;
}//switch
//----------------
}
else if (element.ElementTypeDescriptor == ElementTypeDescriptor.Uuid)
{
if (element.ElementType == ElementType.Uuid16)
{
WriteUInt16(element, (UInt16)element.Value, buf, ref offset, out totalLength);
}
else if (element.ElementType == ElementType.Uuid32)
{
WriteUInt32(element, (UInt32)element.Value, buf, ref offset, out totalLength);
}
else
{
//TODO If the 'Guid' holds a 'Bluetooth-based' UUID, then should we write the short form?
byte[] bytes;
System.Diagnostics.Debug.Assert(element.ElementType == ElementType.Uuid128);
Guid hostGuid = (Guid)element.Value;
Guid netGuid = BluetoothAddress.HostToNetworkOrder(hostGuid);
bytes = netGuid.ToByteArray();
WriteFixedLength(element, bytes, buf, ref offset, out totalLength);
}
//----------------
}
else if (element.ElementTypeDescriptor == ElementTypeDescriptor.Url)
{
Uri uri = element.GetValueAsUri();
String uriString = uri.ToString();
byte[] valueBytes = System.Text.Encoding.ASCII.GetBytes(uriString);
WriteVariableLength(element, valueBytes, buf, ref offset, out totalLength);
//----------------
}
else if (element.ElementTypeDescriptor == ElementTypeDescriptor.TextString)
{
byte[] valueBytes;
String valueString = element.Value as String;
if (valueString != null)
{
valueBytes = System.Text.Encoding.UTF8.GetBytes(valueString);
}
else
{
System.Diagnostics.Debug.Assert(element.Value is byte[]);
valueBytes = (byte[])element.Value;
}
WriteVariableLength(element, valueBytes, buf, ref offset, out totalLength);
//----------------
}
else if (element.ElementTypeDescriptor == ElementTypeDescriptor.Nil)
{
WriteFixedLength(element, new byte[0], buf, ref offset, out totalLength);
//----------------
}
else if (element.ElementTypeDescriptor == ElementTypeDescriptor.Boolean)
{
bool value = (bool)element.Value;
byte[] valueBytes = new byte[1];
valueBytes[0] = value ? (byte)1 : (byte)0;
WriteFixedLength(element, valueBytes, buf, ref offset, out totalLength);
//----------------
}
else
{
totalLength = 0;
}
//
if (totalLength == 0)
{
throw new NotSupportedException(String.Format(System.Globalization.CultureInfo.InvariantCulture,
"Creation of element type '{0}' not implemented.", element.ElementType));
}
return(totalLength);
}
//--------
private static void DumpAdditionalProtocolDescriptorLists(TextWriter writer, int depth, ServiceElement element)
{
Debug.Assert(element.ElementType == ElementType.ElementSequence);
//
// Is a list of PDLs
foreach (ServiceElement curList in element.GetValueAsElementList())
{
DumpProtocolDescriptorList(writer, depth + 1, curList);
}//foreach
}
private static XElement GetAttributeValue(ServiceElement value)
{
// There isn't much formal documentation on the BlueZ SDP XML format.
// The actual serialization is implemented in the convert_raw_data_to_xml
// function at https://github.com/bluez/bluez/blob/9be85f867856195e16c9b94b605f65f6389eda33/src/sdp-xml.c#L637
switch (value.ElementType)
{
case ElementType.Nil:
return(new XElement("nil"));
case ElementType.Boolean:
var boolean = new XElement("boolean");
boolean.SetAttributeValue("value", (bool)value.Value ? "true" : "false");
return(boolean);
case ElementType.UInt8:
var uint8 = new XElement("uint8");
uint8.SetAttributeValue("value", $"0x{value.Value:x2}");
return(uint8);
case ElementType.UInt16:
var uint16 = new XElement("uint16");
uint16.SetAttributeValue("value", $"0x{value.Value:x4}");
return(uint16);
case ElementType.UInt32:
var uint32 = new XElement("uint32");
uint32.SetAttributeValue("value", $"0x{value.Value:x8}");
return(uint32);
case ElementType.UInt64:
var uint64 = new XElement("uint64");
uint64.SetAttributeValue("value", $"0x{value.Value:x16}");
return(uint64);
case ElementType.Int8:
var int8 = new XElement("int8");
int8.SetAttributeValue("value", $"{value.Value:d}");
return(int8);
case ElementType.Int16:
var int16 = new XElement("int16");
int16.SetAttributeValue("value", $"{value.Value:d}");
return(int16);
case ElementType.Int32:
var int32 = new XElement("int32");
int32.SetAttributeValue("value", $"{value.Value:d}");
return(int32);
case ElementType.Int64:
var int64 = new XElement("int64");
int64.SetAttributeValue("value", $"{value.Value:d}");
return(int64);
case ElementType.Uuid16:
var uuid16 = new XElement("uuid");
uuid16.SetAttributeValue("value", $"0x{value.Value:x4}");
return(uuid16);
case ElementType.Uuid32:
var uuid32 = new XElement("uuid");
uuid32.SetAttributeValue("value", $"0x{value.Value:x8}");
return(uuid32);
case ElementType.Uuid128:
var uuid128 = new XElement("uuid");
uuid128.SetAttributeValue("value", $"0x{value.Value:D}");
return(uuid128);
case ElementType.TextString:
var textString = new XElement("text");
if (value.Value is byte[])
{
textString.SetAttributeValue("encoding", "hex");
textString.SetAttributeValue("value", GetHexString((byte[])value.Value));
}
else
{
textString.SetAttributeValue("value", (string)value.Value);
}
return(textString);
case ElementType.Url:
var url = new XElement("url");
url.SetAttributeValue("value", value.Value);
return(url);
case ElementType.ElementSequence:
var sequence = new XElement("sequence");
foreach (var child in value.GetValueAsElementList())
{
sequence.Add(GetAttributeValue(child));
}
return(sequence);
case ElementType.ElementAlternative:
var alternate = new XElement("alternate");
foreach (var child in value.GetValueAsElementList())
{
alternate.Add(GetAttributeValue(child));
}
return(alternate);
default:
throw new ArgumentOutOfRangeException(nameof(value));
}
}
private void WriteSByte(ServiceElement element, SByte value, byte[] buf, ref int offset, out int totalLength)
{
Byte valueU = unchecked ((Byte)value);
WriteByte(element, valueU, buf, ref offset, out totalLength);
}
private void WriteUInt64(ServiceElement element, UInt64 value, byte[] buf, ref int offset, out int totalLength)
{
Int64 valueS = unchecked ((Int64)value);
WriteInt64(element, valueS, buf, ref offset, out totalLength);
}
