/// <summary>
/// Checks that they key has not expired (i.e. the expire date has not been reached).
/// </summary>
/// <param name="checkWithInternetTime">If set to true, we will also check that the local
/// time (on the client computer) has not been changed (using SKM.TimeCheck).
/// </param>
/// <returns>A key information object if the condition is satisfied. Null otherwise.</returns>
public static LicenseKey HasNotExpired(this LicenseKey licenseKey, bool checkWithInternetTime = false)
{
if (licenseKey != null)
{
TimeSpan ts = licenseKey.Expires - DateTime.UtcNow;
if (ts.Days >= 0)
{
if (checkWithInternetTime && SKGL.SKM.TimeCheck())
{
return(null);
}
return(licenseKey);
}
}
return(null);
}
/// <summary>
/// Checks so that the machine code corresponds to the machine code of this computer.
/// </summary>
/// <param name="hashFunction">A hash function used to hash the current computer's parameters.</param>
/// <returns></returns>
public static LicenseKey IsOnRightMachine(this LicenseKey licenseKey, Func <string, string> hashFunction)
{
if (licenseKey != null && licenseKey.ActivatedMachines != null)
{
var mc = SKGL.SKM.getMachineCode(hashFunction);
foreach (var machine in licenseKey.ActivatedMachines.Where(x => x.Mid != null))
{
// if we find a machine code that corresponds to that of this machine -> success.
if (machine.Mid.Equals(mc))
{
return(licenseKey);
}
}
}
return(null);
}
/// <summary>
/// Sets the <see cref="IntValue"/> to a new value (in SKM Platform).
/// </summary>
/// <param name="token">The access token. Read more at https://serialkeymanager.com/docs/api/v3/Auth </param>
/// <param name="value">The new int value</param>
/// <param name="licenseKey">The license key we should associate with this data object.</param>
/// <remarks>Note: for more details, please see
/// <a href="https://serialkeymanager.com/docs/api/v3/SetIntValue">https://serialkeymanager.com/docs/api/v3/SetIntValue</a> <br/>
/// Note also: Integer overflows are not allowed. If you attempt to assign an int value that is beyond the limits of an int32, zero will be assigned to the data object's IntValue.</remarks>
/// <returns>Returns <see cref="ListOfDataObjectsResult"/> or null.</returns>
public bool SetIntValue(string token, int value, LicenseKey licenseKey)
{
var parameters = new ChangeIntValueToKeyModel
{
ProductId = licenseKey.ProductId,
Key = licenseKey.Key,
Id = Id,
IntValue = value
};
var result = Data.SetIntValue(token, parameters);
if (result != null && result.Result == ResultType.Success)
{
IntValue = value;
return(true);
}
return(false);
}
/// <summary>
/// Checks that this object has a valid signature, which means that the content has not been altered
/// after that it was generated by Serial Key Manager.
/// </summary>
/// <param name="rsaPublicKey">The public key (RSA). It can be found here: https://serialkeymanager.com/User/Security </param>
/// <param name="signatureExpirationInterval">If the license key was signed,
/// this method will check so that no more than "signatureExpirationInterval" days have passed since the last activation.
/// </param>
/// <returns>A key information object if the condition is satisfied. Null otherwise.</returns>
public static LicenseKey HasValidSignature(this LicenseKey licenseKey, string rsaPublicKey, int?signatureExpirationInterval)
{
if (licenseKey != null)
{
if (IsLicenceseKeyGenuine(licenseKey, rsaPublicKey))
{
if (signatureExpirationInterval.HasValue)
{
TimeSpan ts = DateTime.Today - licenseKey.SignDate;
if (ts.Days >= signatureExpirationInterval.Value)
{
return(null);
}
}
return(licenseKey);
}
}
return(null);
}
/// <summary>
/// Loads the <see cref="LicenseKey"/> object from a file.
/// </summary>
/// <param name="file">The entire path including file name, i.e. c:\folder\file.txt</param>
/// <remarks>The current object will not be affected. Instead,
/// you need to assign it manually, eg. licenseKey = licenseKey.LoadFromFile().</remarks>
/// <returns>Returns the original object if successful. Null otherwise.</returns>
public static LicenseKey LoadFromFile(this LicenseKey licenseKey, string file)
{
System.IO.StreamReader sr = null;
LicenseKey ki = null;
try
{
sr = new System.IO.StreamReader(file);
ki = Newtonsoft.Json.JsonConvert.DeserializeObject <LicenseKey>(sr.ReadToEnd());
}
catch { }
finally
{
if (sr != null)
{
sr.Dispose();
}
}
return(ki);
}
/// <summary>
/// Loads the <see cref="LicenseKey"/> object from a file.
/// </summary>
/// <param name="file">The entire path including file name, i.e. c:\folder\file.txt</param>
/// <remarks>The current object will not be affected. Instead,
/// you need to assign it manually, eg. licenseKey = licenseKey.LoadFromFile().</remarks>
/// <returns>Returns the original object if successful. Null otherwise.</returns>
public static LicenseKey LoadFromFile(this LicenseKey licenseKey, string file = "licensekey.skm", string RSAPubKey = null)
{
System.IO.StreamReader sr = null;
LicenseKey ki = null;
try
{
sr = new System.IO.StreamReader(file);
ki = ki.LoadFromString(RSAPubKey, sr.ReadToEnd());
}
catch { }
finally
{
if (sr != null)
{
sr.Dispose();
}
}
return(ki);
}
/// <summary>
/// Decrements the <see cref="IntValue"/> by a given amount. (in SKM Platform).
/// </summary>
/// <param name="token">The access token. Read more at https://serialkeymanager.com/docs/api/v3/Auth </param>
/// <param name="decrementValue">The number we should decrement by.</param>
/// <param name="enableBound">
/// If set to true, it will be possible to specify an lower bound.
/// (for Decrement Int Value) For example, if you set the <paramref name="lowerBound"/> parameter (below) to 0,
/// you will be able to decrement the int value until you reach zero (inclusive).
/// Once the lower bound is reached, an error will be thrown.
/// </param>
/// <param name="lowerBound">The upper bound. It only works if <paramref name="enableBound"/> is set to true.</param>
/// <param name="licenseKey">The license key we should associate with this data object.</param>
/// <remarks>Note: for more details, please see
/// <a href="https://serialkeymanager.com/docs/api/v3/IncrementIntValue">https://serialkeymanager.com/docs/api/v3/IncrementIntValue</a> <br/>
/// </remarks>
/// <returns>Returns true if successful or false otherwise.</returns>
public bool DecrementIntValue(string token, int decrementValue, LicenseKey licenseKey, bool enableBound = false, int lowerBound = 0)
{
var parameters = new ChangeIntValueToKeyModel
{
ProductId = licenseKey.ProductId,
Key = licenseKey.Key,
Id = Id,
IntValue = decrementValue,
EnableBound = enableBound,
Bound = lowerBound
};
var result = Data.DecrementIntValue(token, parameters);
if (result != null && result.Result == ResultType.Success)
{
IntValue -= decrementValue;
return(true);
}
return(false);
}
internal static void SetFeatureByNumber(this LicenseKey licenseKey, int i, bool value)
{
switch (i)
{
case 1:
licenseKey.F1 = value;
break;
case 2:
licenseKey.F2 = value;
break;
case 3:
licenseKey.F3 = value;
break;
case 4:
licenseKey.F4 = value;
break;
case 5:
licenseKey.F5 = value;
break;
case 6:
licenseKey.F6 = value;
break;
case 7:
licenseKey.F7 = value;
break;
case 8:
licenseKey.F8 = value;
break;
}
}
/// <summary>
/// Loads the <see cref="LicenseKey"/> object from a file.
/// </summary>
/// <remarks>The current object will not be affected. Instead,
/// you need to assign it manually, eg. licenseKey = licenseKey.LoadFromFile().</remarks>
/// <returns>Returns the original object if successful. Null otherwise.</returns>
public static LicenseKey LoadFromFile(this LicenseKey licenseKey)
{
string name = "licensekey.skm";
return(LoadFromFile(licenseKey, name));
}
/// <summary>
/// Saves the current <see cref="LicenseKey"/> object to file.
/// </summary>
/// <returns>Returns the original object if successful. Null otherwise.</returns>
public static LicenseKey SaveToFile(this LicenseKey licenseKey)
{
string name = "licensekey.skm";
return(SaveToFile(licenseKey, name));
}
/// <summary>
/// Checks so that the machine code corresponds to the machine code of this computer.
/// The default hash function is SHA1.
/// </summary>
/// <returns></returns>
public static LicenseKey IsOnRightMachine(this LicenseKey licenseKey)
{
return(IsOnRightMachine(licenseKey, SKGL.SKM.getSHA1));
}
/// <summary>
/// Checks that this object has a valid signature, which means that the content has not been altered
/// after that it was generated by Serial Key Manager.
/// </summary>
/// <param name="rsaPublicKey">The public key (RSA). It can be found here: https://serialkeymanager.com/User/Security </param>
/// <returns>A key information object if the condition is satisfied. Null otherwise.</returns>
public static LicenseKey HasValidSignature(this LicenseKey licenseKey, string rsaPublicKey)
{
return(HasValidSignature(licenseKey, rsaPublicKey, null));
}
/// <summary>
/// Checks so that the machine code corresponds to the machine code of this computer.
/// The default hash function is SHA1.
/// </summary>
/// <remarks>Please use <see cref="SKM.V3.Methods.Helpers.IsOnRightMachine(LicenseKey)"/> instead of this method
/// since it uses SHA256 by default.</remarks>
/// <param name="allowOverdraft">If floating licensing is enabled with overdraft, this parameter should be set to true.
/// You can enable overdraft by setting <see cref="ActivateModel.MaxOverdraft"/> to a value greater than 0.
///</param>
/// <returns></returns>
public static LicenseKey IsOnRightMachine(this LicenseKey licenseKey, bool isFloatingLicense = false, bool allowOverdraft = false)
{
return(IsOnRightMachine(licenseKey, SKGL.SKM.getSHA1, isFloatingLicense, allowOverdraft));
}
/// <summary>
/// Registers an event related to this license key. Note, this methods only works on the .NET Framework.
/// </summary>
/// <param name="token">An access token with RegisterEvent permission is required.</param>
public static void RegisterEvent(this LicenseKey licenseKey, string token, Event eventObj)
{
licenseKey.RegisterEvent(token, eventObj, Methods.Helpers.GetMachineCode());
}
/// <summary>
/// Decrements the <see cref="IntValue"/> by a given amount. (in SKM Platform).
/// </summary>
/// <param name="token">The access token. Read more at https://serialkeymanager.com/docs/api/v3/Auth </param>
/// <param name="decrementValue">The number we should decrement by.</param>
/// <param name="licenseKey">The license key we should associate with this data object.</param>
/// <remarks>Note: for more details, please see
/// <a href="https://serialkeymanager.com/docs/api/v3/IncrementIntValue">https://serialkeymanager.com/docs/api/v3/IncrementIntValue</a> <br/>
/// </remarks>
/// <returns>Returns true if successful or false otherwise.</returns>
public bool DecrementIntValue(string token, int decrementValue, LicenseKey licenseKey)
{
return(DecrementIntValue(token, decrementValue, licenseKey, false, 0));
}
/// <summary>
/// Increments the <see cref="IntValue"/> by a given amount. (in SKM Platform).
/// </summary>
/// <param name="token">The access token. Read more at https://serialkeymanager.com/docs/api/v3/Auth </param>
/// <param name="incrementValue">The number we should increment by.</param>
/// <param name="licenseKey">The license key we should associate with this data object.</param>
/// <remarks>Note: for more details, please see
/// <a href="https://serialkeymanager.com/docs/api/v3/IncrementIntValue">https://serialkeymanager.com/docs/api/v3/IncrementIntValue</a> <br/>
/// </remarks>
/// <returns>Returns true if successful or false otherwise.</returns>
public bool IncrementIntValue(string token, int incrementValue, LicenseKey licenseKey)
{
return(IncrementIntValue(token, incrementValue, licenseKey, false, 0));
}