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using System;
using System.Diagnostics;
using Org.BouncyCastle.Asn1.X500;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1.IsisMtt.X509
{
/**
* Attribute to indicate that the certificate holder may sign in the name of a
* third person.
* <p>
* ISIS-MTT PROFILE: The corresponding ProcurationSyntax contains either the
* name of the person who is represented (subcomponent thirdPerson) or a
* reference to his/her base certificate (in the component signingFor,
* subcomponent certRef), furthermore the optional components country and
* typeSubstitution to indicate the country whose laws apply, and respectively
* the type of procuration (e.g. manager, procuration, custody).
* </p>
* <p>
* ISIS-MTT PROFILE: The GeneralName MUST be of type directoryName and MAY only
* contain: - RFC3039 attributes, except pseudonym (countryName, commonName,
* surname, givenName, serialNumber, organizationName, organizationalUnitName,
* stateOrProvincename, localityName, postalAddress) and - SubjectDirectoryName
* attributes (title, dateOfBirth, placeOfBirth, gender, countryOfCitizenship,
* countryOfResidence and NameAtBirth).
* </p>
* <pre>
* ProcurationSyntax ::= SEQUENCE {
* country [1] EXPLICIT PrintableString(SIZE(2)) OPTIONAL,
* typeOfSubstitution [2] EXPLICIT DirectoryString (SIZE(1..128)) OPTIONAL,
* signingFor [3] EXPLICIT SigningFor
* }
*
* SigningFor ::= CHOICE
* {
* thirdPerson GeneralName,
* certRef IssuerSerial
* }
* </pre>
*
*/
public class ProcurationSyntax
: Asn1Encodable
{
public static ProcurationSyntax GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is ProcurationSyntax procurationSyntax)
return procurationSyntax;
return new ProcurationSyntax(Asn1Sequence.GetInstance(obj));
}
public static ProcurationSyntax GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) =>
new ProcurationSyntax(Asn1Sequence.GetInstance(taggedObject, declaredExplicit));
public static ProcurationSyntax GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit) =>
new ProcurationSyntax(Asn1Sequence.GetTagged(taggedObject, declaredExplicit));
private readonly DerPrintableString m_country;
private readonly DirectoryString m_typeOfSubstitution;
private readonly Asn1Encodable m_signingFor;
/**
* Constructor from Asn1Sequence.
* <p/>
* The sequence is of type ProcurationSyntax:
* <p/>
* <pre>
* ProcurationSyntax ::= SEQUENCE {
* country [1] EXPLICIT PrintableString(SIZE(2)) OPTIONAL,
* typeOfSubstitution [2] EXPLICIT DirectoryString (SIZE(1..128)) OPTIONAL,
* signingFor [3] EXPLICIT SigningFor
* }
* <p/>
* SigningFor ::= CHOICE
* {
* thirdPerson GeneralName,
* certRef IssuerSerial
* }
* </pre>
*
* @param seq The ASN.1 sequence.
*/
private ProcurationSyntax(Asn1Sequence seq)
{
int count = seq.Count, pos = 0;
if (count < 1 || count > 3)
throw new ArgumentException("Bad sequence size: " + count, nameof(seq));
m_country = Asn1Utilities.ReadOptionalContextTagged(seq, ref pos, 1, true, DerPrintableString.GetTagged);
m_typeOfSubstitution = Asn1Utilities.ReadOptionalContextTagged(seq, ref pos, 2, true, DirectoryString.GetTagged);
m_signingFor = Asn1Utilities.ReadContextTagged(seq, ref pos, 3, true, GetTaggedSigningFor);
if (pos != count)
throw new ArgumentException("Unexpected elements in sequence", nameof(seq));
}
/**
* Constructor from a given details.
* <p/>
* <p/>
* Either <code>generalName</code> or <code>certRef</code> MUST be
* <code>null</code>.
*
* @param country The country code whose laws apply.
* @param typeOfSubstitution The type of procuration.
* @param certRef Reference to certificate of the person who is represented.
*/
public ProcurationSyntax(string country, DirectoryString typeOfSubstitution, IssuerSerial certRef)
{
m_country = country == null ? null : new DerPrintableString(country, true);
m_typeOfSubstitution = typeOfSubstitution;
m_signingFor = certRef ?? throw new ArgumentNullException(nameof(certRef));
}
/**
* Constructor from a given details.
* <p/>
* <p/>
* Either <code>generalName</code> or <code>certRef</code> MUST be
* <code>null</code>.
*
* @param country The country code whose laws apply.
* @param typeOfSubstitution The type of procuration.
* @param thirdPerson The GeneralName of the person who is represented.
*/
public ProcurationSyntax(string country, DirectoryString typeOfSubstitution, GeneralName thirdPerson)
{
m_country = country == null ? null : new DerPrintableString(country, true);
m_typeOfSubstitution = typeOfSubstitution;
m_signingFor = thirdPerson ?? throw new ArgumentNullException(nameof(thirdPerson));
}
public virtual string Country => m_country?.GetString();
public virtual DirectoryString TypeOfSubstitution => m_typeOfSubstitution;
public virtual GeneralName ThirdPerson => m_signingFor as GeneralName;
public virtual IssuerSerial CertRef => m_signingFor as IssuerSerial;
/**
* Produce an object suitable for an Asn1OutputStream.
* <p/>
* Returns:
* <p/>
* <pre>
* ProcurationSyntax ::= SEQUENCE {
* country [1] EXPLICIT PrintableString(SIZE(2)) OPTIONAL,
* typeOfSubstitution [2] EXPLICIT DirectoryString (SIZE(1..128)) OPTIONAL,
* signingFor [3] EXPLICIT SigningFor
* }
* <p/>
* SigningFor ::= CHOICE
* {
* thirdPerson GeneralName,
* certRef IssuerSerial
* }
* </pre>
*
* @return an Asn1Object
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(3);
v.AddOptionalTagged(true, 1, m_country);
v.AddOptionalTagged(true, 2, m_typeOfSubstitution);
v.Add(new DerTaggedObject(true, 3, m_signingFor));
return new DerSequence(v);
}
private static Asn1Encodable GetInstanceSigningFor(Asn1Encodable obj)
{
var generalName = GeneralName.GetOptional(obj);
if (generalName != null)
return generalName;
var issuerSerial = IssuerSerial.GetOptional(obj);
if (issuerSerial != null)
return issuerSerial;
throw new ArgumentException("Invalid object: " + Platform.GetTypeName(obj), nameof(obj));
}
private static Asn1Encodable GetTaggedSigningFor(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
Debug.Assert(taggedObject != null);
Debug.Assert(declaredExplicit);
return GetInstanceSigningFor(taggedObject.GetExplicitBaseObject());
}
}
}
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