131 lines
4.2 KiB
C#
131 lines
4.2 KiB
C#
namespace Unosquare.Swan.Networking.Ldap
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{
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/// <summary>
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/// Represents an Ldap Control.
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/// <pre>
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/// Control ::= SEQUENCE {
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/// controlType LdapOID,
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/// criticality BOOLEAN DEFAULT FALSE,
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/// controlValue OCTET STRING OPTIONAL }
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/// </pre>
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/// </summary>
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/// <seealso cref="Unosquare.Swan.Networking.Ldap.Asn1Sequence" />
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internal class RfcControl : Asn1Sequence
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="RfcControl"/> class.
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/// Note: criticality is only added if true, as per RFC 2251 sec 5.1 part
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/// (4): If a value of a type is its default value, it MUST be
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/// absent.
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/// </summary>
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/// <param name="controlType">Type of the control.</param>
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/// <param name="criticality">The criticality.</param>
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/// <param name="controlValue">The control value.</param>
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public RfcControl(string controlType, Asn1Boolean criticality = null, Asn1Object controlValue = null)
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: base(3)
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{
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Add(controlType);
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Add(criticality ?? new Asn1Boolean(false));
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if (controlValue != null)
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Add(controlValue);
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}
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public RfcControl(Asn1Structured seqObj)
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: base(3)
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{
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for (var i = 0; i < seqObj.Size(); i++)
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Add(seqObj.Get(i));
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}
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public Asn1OctetString ControlType => (Asn1OctetString)Get(0);
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public Asn1Boolean Criticality => Size() > 1 && Get(1) is Asn1Boolean boolean ? boolean : new Asn1Boolean(false);
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public Asn1OctetString ControlValue
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{
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get
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{
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if (Size() > 2)
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{
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// MUST be a control value
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return (Asn1OctetString)Get(2);
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}
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return Size() > 1 && Get(1) is Asn1OctetString s ? s : null;
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}
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set
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{
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if (value == null)
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return;
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if (Size() == 3)
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{
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// We already have a control value, replace it
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Set(2, value);
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return;
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}
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if (Size() == 2)
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{
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// Get the second element
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var obj = Get(1);
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// Is this a control value
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if (obj is Asn1OctetString)
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{
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// replace this one
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Set(1, value);
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}
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else
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{
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// add a new one at the end
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Add(value);
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}
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}
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}
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}
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}
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/// <summary>
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/// Represents Ldap Sasl Credentials.
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/// <pre>
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/// SaslCredentials ::= SEQUENCE {
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/// mechanism LdapString,
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/// credentials OCTET STRING OPTIONAL }
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/// </pre></summary>
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/// <seealso cref="Unosquare.Swan.Networking.Ldap.Asn1Sequence" />
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internal class RfcSaslCredentials : Asn1Sequence
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{
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public RfcSaslCredentials(string mechanism, sbyte[] credentials = null)
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: base(2)
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{
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Add(mechanism);
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if (credentials != null)
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Add(new Asn1OctetString(credentials));
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}
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}
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/// <summary>
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/// Represents an Ldap Authentication Choice.
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/// <pre>
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/// AuthenticationChoice ::= CHOICE {
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/// simple [0] OCTET STRING,
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/// -- 1 and 2 reserved
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/// sasl [3] SaslCredentials }
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/// </pre></summary>
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/// <seealso cref="Unosquare.Swan.Networking.Ldap.Asn1Choice" />
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internal class RfcAuthenticationChoice : Asn1Choice
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{
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public RfcAuthenticationChoice(sbyte[] passwd)
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: base(new Asn1Tagged(new Asn1Identifier(0), new Asn1OctetString(passwd), false))
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{
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}
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public RfcAuthenticationChoice(string mechanism, sbyte[] credentials)
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: base(new Asn1Tagged(new Asn1Identifier(3, true), new RfcSaslCredentials(mechanism, credentials), false))
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{
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// implicit tagging
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}
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}
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} |