/// <summary>
/// Constructs ServerContactInfo representation of the server's contact information.
/// </summary>
/// <returns>ServerContactInfo structure or null if the function fails.</returns>
public ServerContactInfo GetServerContactInfo()
{
log.Trace("()");
ServerContactInfo res = new ServerContactInfo();
res.NetworkId = ProtocolHelper.ByteArrayToByteString(this.NetworkId);
res.PrimaryPort = (uint)this.PrimaryPort;
res.IpAddress = ProtocolHelper.ByteArrayToByteString(this.IpAddress);
log.Trace("(-)");
return(res);
}
/// <summary>
/// Creates ActivityQueryInformation representation of the activity.
/// </summary>
/// <param name="PrimaryServerContactInfo">Contact information to the activity's primary proximity server or null if this proximity server is the primary.</param>
/// <returns>ActivityQueryInformation structure describing the activity.</returns>
public ActivityQueryInformation ToActivityQueryInformation(ServerContactInfo PrimaryServerContactInfo)
{
bool isPrimary = this is PrimaryActivity;
ActivityQueryInformation res = new ActivityQueryInformation()
{
SignedActivity = this.ToSignedActivityInformation(),
IsPrimary = isPrimary,
};
if (!isPrimary)
{
res.PrimaryServer = PrimaryServerContactInfo;
}
return(res);
}
/// <summary>
/// Constructs server contact information.
/// </summary>
/// <param name="NetworkId">Identifier of the server.</param>
/// <returns>Server contact information structure.</returns>
public async Task <ServerContactInfo> GetServerContactInfoAsync(byte[] NetworkId)
{
log.Trace("(NetworkId:'{0}')", NetworkId);
ServerContactInfo res = null;
T remoteServer = (await GetAsync(n => n.NetworkId == NetworkId, null, true)).FirstOrDefault();
if (remoteServer != null)
{
res = remoteServer.GetServerContactInfo();
}
else
{
log.Error("{0} ID '{1}' not found.", remoteServer is Neighbor ? "Neighbor" : "Follower", NetworkId.ToHex());
}
log.Trace("(-):{0}", res != null ? "ServerContactInfo" : "null");
return(res);
}
/// <summary>
/// Validates ActivityInformation structure by itself. This function does not touch database and does not validate
/// anything that depends on the context.
/// </summary>
/// <param name="Activity">Description of the activity to validate.</param>
/// <param name="OwnerIdentityPublicKey">Public key of the activity's owner identity.</param>
/// <param name="MessageBuilder">Network message builder of the client who sent this activity description.</param>
/// <param name="RequestMessage">Full request message from client.</param>
/// <param name="ErrorPrefix">Prefix to add to the validation error details.</param>
/// <param name="ErrorResponse">If the function fails, this is filled with error response message that is ready to be sent to the client.</param>
/// <returns>true if the activity information is valid, false otherwise.</returns>
public static bool ValidateActivityInformation(ActivityInformation Activity, byte[] OwnerIdentityPublicKey, ProxMessageBuilder MessageBuilder, ProxProtocolMessage RequestMessage, string ErrorPrefix, out ProxProtocolMessage ErrorResponse)
{
log.Trace("()");
bool res = false;
ErrorResponse = null;
string details = null;
if (Activity == null)
{
Activity = new ActivityInformation();
}
if (Activity.ProfileServerContact == null)
{
Activity.ProfileServerContact = new ServerContactInfo();
}
SemVer version = new SemVer(Activity.Version);
// Currently only supported version is 1.0.0.
if (!version.Equals(SemVer.V100))
{
log.Debug("Unsupported version '{0}'.", version);
details = "version";
}
if (details == null)
{
uint activityId = Activity.Id;
// 0 is not a valid activity identifier.
if (activityId == 0)
{
log.Debug("Invalid activity ID '{0}'.", activityId);
details = "id";
}
}
if (details == null)
{
byte[] pubKey = Activity.OwnerPublicKey.ToByteArray();
bool pubKeyValid = (0 < pubKey.Length) && (pubKey.Length <= ProtocolHelper.MaxPublicKeyLengthBytes) && ByteArrayComparer.Equals(OwnerIdentityPublicKey, pubKey);
if (!pubKeyValid)
{
log.Debug("Invalid public key '{0}' does not match identity public key '{1}'.", pubKey.ToHex(), OwnerIdentityPublicKey.ToHex());
details = "ownerPublicKey";
}
}
if (details == null)
{
ServerContactInfo sci = Activity.ProfileServerContact;
bool networkIdValid = sci.NetworkId.Length == ProtocolHelper.NetworkIdentifierLength;
IPAddress ipAddress = IPAddressExtensions.IpFromBytes(sci.IpAddress.ToByteArray());
bool ipAddressValid = (ipAddress != null) && (Config.Configuration.TestModeEnabled || !ipAddress.IsReservedOrLocal());
bool portValid = (1 <= sci.PrimaryPort) && (sci.PrimaryPort <= 65535);
if (!networkIdValid || !ipAddressValid || !portValid)
{
log.Debug("Profile server contact's network ID is {0}, IP address is {1}, port is {2}.", networkIdValid ? "valid" : "invalid", ipAddressValid ? "valid" : "invalid", portValid ? "valid" : "invalid");
if (!networkIdValid)
{
details = "profileServerContact.networkId";
}
else if (!ipAddressValid)
{
details = "profileServerContact.ipAddress";
}
else if (!portValid)
{
details = "profileServerContact.primaryPort";
}
}
}
if (details == null)
{
string activityType = Activity.Type;
if (activityType == null)
{
activityType = "";
}
int byteLen = Encoding.UTF8.GetByteCount(activityType);
bool activityTypeValid = (0 < byteLen) && (byteLen <= ProxMessageBuilder.MaxActivityTypeLengthBytes);
if (!activityTypeValid)
{
log.Debug("Activity type too long or zero length ({0} bytes, limit is {1}).", byteLen, ProxMessageBuilder.MaxActivityTypeLengthBytes);
details = "type";
}
}
if (details == null)
{
GpsLocation locLat = new GpsLocation(Activity.Latitude, 0);
GpsLocation locLong = new GpsLocation(0, Activity.Longitude);
if (!locLat.IsValid())
{
log.Debug("Latitude '{0}' is not a valid GPS latitude value.", Activity.Latitude);
details = "latitude";
}
else if (!locLong.IsValid())
{
log.Debug("Longitude '{0}' is not a valid GPS longitude value.", Activity.Longitude);
details = "longitude";
}
}
if (details == null)
{
uint precision = Activity.Precision;
bool precisionValid = (0 <= precision) && (precision <= ProxMessageBuilder.MaxLocationPrecision);
if (!precisionValid)
{
log.Debug("Precision '{0}' is not an integer between 0 and {1}.", precision, ProxMessageBuilder.MaxLocationPrecision);
details = "precision";
}
}
if (details == null)
{
DateTime?startTime = ProtocolHelper.UnixTimestampMsToDateTime(Activity.StartTime);
DateTime?expirationTime = ProtocolHelper.UnixTimestampMsToDateTime(Activity.ExpirationTime);
if (startTime == null)
{
log.Debug("Invalid activity start time timestamp '{0}'.", Activity.StartTime);
details = "startTime";
}
else if (expirationTime == null)
{
log.Debug("Invalid activity expiration time timestamp '{0}'.", Activity.ExpirationTime);
details = "expirationTime";
}
else
{
if (startTime > expirationTime)
{
log.Debug("Activity expiration time has to be greater than or equal to its start time.");
details = "expirationTime";
}
else if (expirationTime.Value > DateTime.UtcNow.AddHours(ActivityBase.MaxActivityLifeTimeHours))
{
log.Debug("Activity expiration time {0} is more than {1} hours in the future.", expirationTime.Value.ToString("yyyy-MM-dd HH:mm:ss"), ActivityBase.MaxActivityLifeTimeHours);
details = "expirationTime";
}
}
}
if (details == null)
{
string extraData = Activity.ExtraData;
if (extraData == null)
{
extraData = "";
}
// Extra data is semicolon separated 'key=value' list, max ActivityBase.MaxActivityExtraDataLengthBytes bytes long.
int byteLen = Encoding.UTF8.GetByteCount(extraData);
if (byteLen > ProxMessageBuilder.MaxActivityExtraDataLengthBytes)
{
log.Debug("Extra data too large ({0} bytes, limit is {1}).", byteLen, ProxMessageBuilder.MaxActivityExtraDataLengthBytes);
details = "extraData";
}
}
if (details == null)
{
res = true;
}
else
{
ErrorResponse = MessageBuilder.CreateErrorInvalidValueResponse(RequestMessage, ErrorPrefix + details);
}
log.Trace("(-):{0}", res);
return(res);
}
