mcs/class/corlib/Mono.Security.X509/X501Name.cs

   1 //
   2 // X501Name.cs: X.501 Distinguished Names stuff
   3 //
   4 // Author:
   5 //      Sebastien Pouliot <sebastien@ximian.com>
   6 //
   7 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
   8 // (C) 2004 Novell (http://www.novell.com)
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 using System;
  35 using System.Globalization;
  36 using System.Text;
  37
  38 using Mono.Security;
  39
  40 namespace Mono.Security.X509 {
  41
  42         // References:
  43         // 1.   Information technology - Open Systems Interconnection - The Directory: Models
  44         //      http://www.itu.int/rec/recommendation.asp?type=items&lang=e&parent=T-REC-X.501-200102-I
  45         // 2.   RFC2253: Lightweight Directory Access Protocol (v3): UTF-8 String Representation of Distinguished Names
  46         //      http://www.ietf.org/rfc/rfc2253.txt
  47
  48         /*
  49          * Name ::= CHOICE { RDNSequence }
  50          *
  51          * RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
  52          *
  53          * RelativeDistinguishedName ::= SET OF AttributeTypeAndValue
  54          */
  55 #if INSIDE_CORLIB
  56         internal
  57 #else
  58         public
  59 #endif
  60         sealed class X501 {
  61
  62                 static byte[] countryName = { 0x55, 0x04, 0x06 };
  63                 static byte[] organizationName = { 0x55, 0x04, 0x0A };
  64                 static byte[] organizationalUnitName = { 0x55, 0x04, 0x0B };
  65                 static byte[] commonName = { 0x55, 0x04, 0x03 };
  66                 static byte[] localityName = { 0x55, 0x04, 0x07 };
  67                 static byte[] stateOrProvinceName = { 0x55, 0x04, 0x08 };
  68                 static byte[] streetAddress = { 0x55, 0x04, 0x09 };
  69                 static byte[] serialNumber = { 0x55, 0x04, 0x05 };
  70                 static byte[] domainComponent = { 0x09, 0x92, 0x26, 0x89, 0x93, 0xF2, 0x2C, 0x64, 0x01, 0x19 };
  71                 static byte[] userid = { 0x09, 0x92, 0x26, 0x89, 0x93, 0xF2, 0x2C, 0x64, 0x01, 0x01 };
  72                 static byte[] email = { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x09, 0x01 };
  73
  74                 private X501 ()
  75                 {
  76                 }
  77
  78                 static public string ToString (ASN1 seq)
  79                 {
  80                         StringBuilder sb = new StringBuilder ();
  81                         for (int i = 0; i < seq.Count; i++) {
  82                                 ASN1 entry = seq [i];
  83                                 ASN1 pair = entry [0];
  84
  85                                 ASN1 s = pair [1];
  86                                 if (s == null)
  87                                         continue;
  88
  89                                 ASN1 poid = pair [0];
  90                                 if (poid == null)
  91                                         continue;
  92
  93                                 if (poid.CompareValue (countryName))
  94                                         sb.Append ("C=");
  95                                 else if (poid.CompareValue (organizationName))
  96                                         sb.Append ("O=");
  97                                 else if (poid.CompareValue (organizationalUnitName))
  98                                         sb.Append ("OU=");
  99                                 else if (poid.CompareValue (commonName))
 100                                         sb.Append ("CN=");
 101                                 else if (poid.CompareValue (localityName))
 102                                         sb.Append ("L=");
 103                                 else if (poid.CompareValue (stateOrProvinceName))
 104                                         sb.Append ("S=");       // NOTE: RFC2253 uses ST=
 105                                 else if (poid.CompareValue (streetAddress))
 106                                         sb.Append ("STREET=");
 107                                 else if (poid.CompareValue (domainComponent))
 108                                         sb.Append ("DC=");
 109                                 else if (poid.CompareValue (userid))
 110                                         sb.Append ("UID=");
 111                                 else if (poid.CompareValue (email))
 112                                         sb.Append ("E=");       // NOTE: Not part of RFC2253
 113                                 else {
 114                                         // unknown OID
 115                                         sb.Append ("OID.");     // NOTE: Not present as RFC2253
 116                                         sb.Append (ASN1Convert.ToOid (poid));
 117                                         sb.Append ("=");
 118                                 }
 119
 120                                 string sValue = null;
 121                                 // 16bits or 8bits string ? TODO not complete (+special chars!)
 122                                 if (s.Tag == 0x1E) {
 123                                         // BMPSTRING
 124                                         StringBuilder sb2 = new StringBuilder ();
 125                                         for (int j = 1; j < s.Value.Length; j+=2)
 126                                                 sb2.Append ((char) s.Value[j]);
 127                                         sValue = sb2.ToString ();
 128                                 }
 129                                 else {
 130                                         sValue = System.Text.Encoding.UTF8.GetString (s.Value);
 131                                         // in some cases we must quote (") the value
 132                                         // Note: this doesn't seems to conform to RFC2253
 133                                         char[] specials = { ',', '+', '"', '\\', '<', '>', ';' };
 134                                         if (sValue.IndexOfAny(specials, 0, sValue.Length) > 0)
 135                                                 sValue = "\"" + sValue + "\"";
 136                                         else if (sValue.StartsWith (" "))
 137                                                 sValue = "\"" + sValue + "\"";
 138                                         else if (sValue.EndsWith (" "))
 139                                                 sValue = "\"" + sValue + "\"";
 140                                 }
 141
 142                                 sb.Append (sValue);
 143
 144                                 // separator (not on last iteration)
 145                                 if (i < seq.Count - 1)
 146                                         sb.Append (", ");
 147                         }
 148                         return sb.ToString ();
 149                 }
 150
 151                 static private X520.AttributeTypeAndValue GetAttributeFromOid (string attributeType)
 152                 {
 153                         switch (attributeType.ToUpper (CultureInfo.InvariantCulture).Trim ()) {
 154                                 case "C":
 155                                         return new X520.CountryName ();
 156                                 case "O":
 157                                         return new X520.OrganizationName ();
 158                                 case "OU":
 159                                         return new X520.OrganizationalUnitName ();
 160                                 case "CN":
 161                                         return new X520.CommonName ();
 162                                 case "L":
 163                                         return new X520.LocalityName ();
 164                                 case "S":       // Microsoft
 165                                 case "ST":      // RFC2253
 166                                         return new X520.StateOrProvinceName ();
 167                                 case "DC":
 168 //                                      return streetAddress;
 169                                 case "UID":
 170 //                                      return domainComponent;
 171                                 default:
 172                                         return null;
 173                         }
 174                 }
 175
 176                 static public ASN1 FromString (string rdn)
 177                 {
 178                         if (rdn == null)
 179                                 throw new ArgumentNullException ("rdn");
 180                         // get string from here to ',' or end of string
 181                         int start = 0;
 182                         int end = 0;
 183                         ASN1 asn1 = new ASN1 (0x30);
 184                         while (start < rdn.Length) {
 185                                 end = rdn.IndexOf (',', end) + 1;
 186                                 if (end == 0)
 187                                         end = rdn.Length + 1;
 188                                 string av = rdn.Substring (start, end - start - 1);
 189                                 // get '=' position in substring
 190                                 int equal = av.IndexOf ('=');
 191                                 // get AttributeType
 192                                 string attributeType = av.Substring (0, equal);
 193                                 // get value
 194                                 string attributeValue = av.Substring (equal + 1);
 195
 196                                 X520.AttributeTypeAndValue atv = GetAttributeFromOid (attributeType);
 197                                 atv.Value = attributeValue;
 198                                 asn1.Add (new ASN1 (0x31, atv.GetBytes ()));
 199
 200                                 // next part
 201                                 start = end;
 202                                 if (start != - 1) {
 203                                         if (end > rdn.Length)
 204                                                 break;
 205                                 }
 206                         }
 207                         return asn1;
 208                 }
 209         }
 210 }