/// <summary>
/// Create a Threat List.
/// </summary>
/// <param name="descriptor">
/// A <see cref="ThreatListDescriptor" /> identifying the threat list.
/// </param>
/// <param name="state">
/// The state, formatted as a hexadecimal encoded string, of the threat list when it was retrieved from the
/// Google Safe Browsing API.
/// </param>
/// <param name="retrieveDate">
/// The date, in Coordinated Universal Time (UTC), the threat list was retrieved from the Google Safe
/// Browsing API. If the date is not expressed in UTC, it is converted to it.
/// </param>
/// <param name="waitToDate">
/// The date, in Coordinated Universal Time (UTC), a client must wait to before retrieving the threat list
/// from the Google Safe Browsing API again. If the date is not expressed in UTC, it is converted to it. A
/// null reference indicates a client does not need to wait before retrieving the threat list from the
/// Google Safe Browsing API again.
/// </param>
/// <exception cref="System.ArgumentNullException">
/// Thrown if <paramref name="descriptor" /> is a null reference, or if <paramref name="state" /> is a
/// null reference.
/// </exception>
/// <exception cref="System.FormatException">
/// Thrown if <paramref name="state" /> is not hexadecimal encoded.
/// </exception>
public ThreatList(ThreatListDescriptor descriptor, string state, DateTime retrieveDate, DateTime?waitToDate)
{
Guard.ThrowIf(nameof(descriptor), descriptor).Null();
this.Descriptor = descriptor;
this.RetrieveDate = retrieveDate.ToUniversalTime();
this.State = CreateState(state);
this.WaitToDate = waitToDate?.ToUniversalTime();
// <summary>
// Create State.
// </summary>
string CreateState(string cState)
{
// ...
//
// Throws an exception if the operation fails.
var cIsStateHexadecimalEncoded = cState.IsHexadecimalEncoded();
if (!cIsStateHexadecimalEncoded)
{
var cDetailMessage = $"A state ({cState}) is not hexadecimal encoded.";
throw new FormatException(cDetailMessage);
}
return(cState);
}
}
/// <summary>
/// Create an Unsafe Threat.
/// </summary>
/// <param name="sha256Hash">
/// A full SHA256 hash, formatted as a hexadecimal encoded string, identifying the threat.
/// </param>
/// <param name="associatedThreatListDescriptor">
/// A <see cref="ThreatListDescriptor" /> identifying the <see cref="ThreatList" /> the threat is
/// associated with.
/// </param>
/// <param name="expirationDate">
/// The date, in Coordinated Universal Time (UTC), the threat should be considered unsafe to. If the date
/// is not in UTC, it is converted to it.
/// </param>
/// <exception cref="System.ArgumentNullException">
/// Thrown if <paramref name="sha256Hash" /> is a null reference, or if
/// <paramref name="associatedThreatListDescriptor" /> is a null reference.
/// </exception>
/// <exception cref="System.FormatException">
/// Thrown if <paramref name="sha256Hash" /> is not hexadecimal encoded.
/// </exception>
public UnsafeThreat(string sha256Hash, ThreatListDescriptor associatedThreatListDescriptor, DateTime expirationDate)
{
Guard.ThrowIf(nameof(associatedThreatListDescriptor), associatedThreatListDescriptor).Null();
this.AssociatedThreatListDescriptor = associatedThreatListDescriptor;
this.ExpirationDate = expirationDate.ToUniversalTime();
this.Sha256Hash = CreateSha256Hash(sha256Hash);
// <summary>
// Create SHA256 Hash.
// </summary>
string CreateSha256Hash(string cSha256Hash)
{
// ...
//
// Throws an exception if the operation fails.
var cIsSha256HashHexadecimalEncoded = cSha256Hash.IsHexadecimalEncoded();
if (!cIsSha256HashHexadecimalEncoded)
{
var cDetailMessage = $"A SHA256 hash ({cSha256Hash}) is not hexadecimal encoded.";
throw new FormatException(cDetailMessage);
}
return(cSha256Hash);
}
}
/// <summary>
/// Create an Invalid Threat List.
/// </summary>
/// <param name="threatListDescriptor">
/// A <see cref="ThreatListDescriptor" /> identifying the threat list.
/// </param>
/// <returns>
/// An invalid threat list.
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// Thrown if <paramref name="threatListDescriptor" /> is a null reference.
/// </exception>
public static ThreatList CreateInvalid(ThreatListDescriptor threatListDescriptor)
{
// ...
//
// Throws an exception if the operation fails.
return(InvalidThreatListCache.CreateInvalidThreatList(threatListDescriptor));
}
/// <summary>
/// Create an Expired Threat List.
/// </summary>
/// <param name="threatListDescriptor">
/// A <see cref="ThreatListDescriptor" /> identifying the threat list.
/// </param>
/// <param name="threatListState">
/// The state, formatted as a hexadecimal encoded string, of the threat list when it was retrieved from the
/// Google Safe Browsing API.
/// </param>
/// <returns>
/// An expired threat list.
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// Thrown if <paramref name="threatListDescriptor" /> is a null reference, or if
/// <paramref name="threatListState" /> is a null reference.
/// </exception>
/// <exception cref="System.FormatException">
/// Thrown if <paramref name="threatListState" /> is not hexadecimal encoded.
/// </exception>
public static ThreatList CreateExpired(ThreatListDescriptor threatListDescriptor, string threatListState)
{
// ...
//
// Throws an exception if the operation fails.
return(new ThreatList(threatListDescriptor, threatListState, DateTime.UtcNow));
}
/// <summary>
/// Set Threat List's Descriptor.
/// </summary>
/// <param name="value">
/// A <see cref="ThreatListDescriptor" /> identifying the <see cref="ThreatList" />.
/// </param>
/// <returns>
/// This threat list builder.
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// Thrown if <paramref name="value" /> is a null reference.
/// </exception>
public ThreatListBuilder SetDescriptor(ThreatListDescriptor value)
{
Guard.ThrowIf(nameof(value), value).Null();
this.Descriptor = value;
return(this);
}
/// <summary>
/// Create an Invalid Threat List.
/// </summary>
/// <param name="threatListDescriptor">
/// A <see cref="ThreatListDescriptor" /> identifying the threat list.
/// </param>
/// <returns>
/// An invalid threat list.
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// Thrown if <paramref name="threatListDescriptor" /> is a null reference.
/// </exception>
internal static ThreatList CreateInvalidThreatList(ThreatListDescriptor threatListDescriptor)
{
Guard.ThrowIf(nameof(threatListDescriptor), threatListDescriptor).Null();
var threatList = InvalidThreatListCache.Cache.GetOrAdd(threatListDescriptor, tld => {
var cThreatList = new ThreatList(tld, InvalidThreatListCache.InvalidThreatListState, DateTime.UtcNow);
return(cThreatList);
});
return(threatList);
}
/// <summary>
/// Create a Threat List.
/// </summary>
/// <param name="descriptor">
/// A <see cref="ThreatListDescriptor" /> identifying the threat list.
/// </param>
/// <param name="state">
/// The state, formatted as a hexadecimal encoded string, of the threat list when it was retrieved from the
/// Google Safe Browsing API.
/// </param>
/// <param name="retrieveDate">
/// The date, in Coordinated Universal Time (UTC), the threat list was retrieved from the Google Safe
/// Browsing API. If the date is not expressed in UTC, it is converted to it.
/// </param>
/// <exception cref="System.ArgumentNullException">
/// Thrown if <paramref name="descriptor" /> is a null reference, or if <paramref name="state" /> is a
/// null reference.
/// </exception>
/// <exception cref="System.FormatException">
/// Thrown if <paramref name="state" /> is not hexadecimal encoded.
/// </exception>
public ThreatList(ThreatListDescriptor descriptor, string state, DateTime retrieveDate) : this(descriptor, state, retrieveDate, null)
{
}