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using System;
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
{
private readonly string country;
private readonly DirectoryString typeOfSubstitution;
private readonly GeneralName thirdPerson;
private readonly IssuerSerial certRef;
public static ProcurationSyntax GetInstance(object obj)
{
if (obj == null || obj is ProcurationSyntax)
return (ProcurationSyntax) obj;
if (obj is Asn1Sequence seq)
return new ProcurationSyntax(seq);
throw new ArgumentException("unknown object in factory: " + Platform.GetTypeName(obj), "obj");
}
/**
* 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)
{
if (seq.Count < 1 || seq.Count > 3)
throw new ArgumentException("Bad sequence size: " + seq.Count);
foreach (var element in seq)
{
Asn1TaggedObject o = Asn1TaggedObject.GetInstance(element, Asn1Tags.ContextSpecific);
switch (o.TagNo)
{
case 1:
country = DerPrintableString.GetInstance(o, true).GetString();
break;
case 2:
typeOfSubstitution = DirectoryString.GetInstance(o, true);
break;
case 3:
Asn1Encodable signingFor = o.GetExplicitBaseObject();
if (signingFor is Asn1TaggedObject)
{
thirdPerson = GeneralName.GetInstance(signingFor);
}
else
{
certRef = IssuerSerial.GetInstance(signingFor);
}
break;
default:
throw new ArgumentException("Bad tag number: " + o.TagNo);
}
}
}
/**
* 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)
{
this.country = country;
this.typeOfSubstitution = typeOfSubstitution;
this.thirdPerson = null;
this.certRef = 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)
{
this.country = country;
this.typeOfSubstitution = typeOfSubstitution;
this.thirdPerson = thirdPerson;
this.certRef = null;
}
public virtual string Country
{
get { return country; }
}
public virtual DirectoryString TypeOfSubstitution
{
get { return typeOfSubstitution; }
}
public virtual GeneralName ThirdPerson
{
get { return thirdPerson; }
}
public virtual IssuerSerial CertRef
{
get { return certRef; }
}
/**
* 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);
if (country != null)
{
v.Add(new DerTaggedObject(true, 1, new DerPrintableString(country, true)));
}
v.AddOptionalTagged(true, 2, typeOfSubstitution);
if (thirdPerson != null)
{
v.Add(new DerTaggedObject(true, 3, thirdPerson));
}
else
{
v.Add(new DerTaggedObject(true, 3, certRef));
}
return new DerSequence(v);
}
}
}
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