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 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33 using System.Globalization;
  34 using System.Text;
  35
  36 using Mono.Security;
  37
  38 namespace Mono.Security.X509 {
  39
  40         // References:
  41         // 1.   Information technology - Open Systems Interconnection - The Directory: Models
  42         //      http://www.itu.int/rec/recommendation.asp?type=items&lang=e&parent=T-REC-X.501-200102-I
  43         // 2.   RFC2253: Lightweight Directory Access Protocol (v3): UTF-8 String Representation of Distinguished Names
  44         //      http://www.ietf.org/rfc/rfc2253.txt
  45
  46         /*
  47          * Name ::= CHOICE { RDNSequence }
  48          *
  49          * RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
  50          *
  51          * RelativeDistinguishedName ::= SET OF AttributeTypeAndValue
  52          */
  53 #if INSIDE_CORLIB
  54         internal
  55 #else
  56         public
  57 #endif
  58         sealed class X501 {
  59
  60                 static byte[] countryName = { 0x55, 0x04, 0x06 };
  61                 static byte[] organizationName = { 0x55, 0x04, 0x0A };
  62                 static byte[] organizationalUnitName = { 0x55, 0x04, 0x0B };
  63                 static byte[] commonName = { 0x55, 0x04, 0x03 };
  64                 static byte[] localityName = { 0x55, 0x04, 0x07 };
  65                 static byte[] stateOrProvinceName = { 0x55, 0x04, 0x08 };
  66                 static byte[] streetAddress = { 0x55, 0x04, 0x09 };
  67                 //static byte[] serialNumber = { 0x55, 0x04, 0x05 };
  68                 static byte[] domainComponent = { 0x09, 0x92, 0x26, 0x89, 0x93, 0xF2, 0x2C, 0x64, 0x01, 0x19 };
  69                 static byte[] userid = { 0x09, 0x92, 0x26, 0x89, 0x93, 0xF2, 0x2C, 0x64, 0x01, 0x01 };
  70                 static byte[] email = { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x09, 0x01 };
  71
  72                 private X501 ()
  73                 {
  74                 }
  75
  76                 static public string ToString (ASN1 seq)
  77                 {
  78                         StringBuilder sb = new StringBuilder ();
  79                         for (int i = 0; i < seq.Count; i++) {
  80                                 ASN1 entry = seq [i];
  81                                 // multiple entries are valid
  82                                 for (int k = 0; k < entry.Count; k++) {
  83                                         ASN1 pair = entry [k];
  84                                         ASN1 s = pair [1];
  85                                         if (s == null)
  86                                                 continue;
  87
  88                                         ASN1 poid = pair [0];
  89                                         if (poid == null)
  90                                                 continue;
  91
  92                                         if (poid.CompareValue (countryName))
  93                                                 sb.Append ("C=");
  94                                         else if (poid.CompareValue (organizationName))
  95                                                 sb.Append ("O=");
  96                                         else if (poid.CompareValue (organizationalUnitName))
  97                                                 sb.Append ("OU=");
  98                                         else if (poid.CompareValue (commonName))
  99                                                 sb.Append ("CN=");
 100                                         else if (poid.CompareValue (localityName))
 101                                                 sb.Append ("L=");
 102                                         else if (poid.CompareValue (stateOrProvinceName))
 103                                                 sb.Append ("S=");       // NOTE: RFC2253 uses ST=
 104                                         else if (poid.CompareValue (streetAddress))
 105                                                 sb.Append ("STREET=");
 106                                         else if (poid.CompareValue (domainComponent))
 107                                                 sb.Append ("DC=");
 108                                         else if (poid.CompareValue (userid))
 109                                                 sb.Append ("UID=");
 110                                         else if (poid.CompareValue (email))
 111                                                 sb.Append ("E=");       // NOTE: Not part of RFC2253
 112                                         else {
 113                                                 // unknown OID
 114                                                 sb.Append ("OID.");     // NOTE: Not present as RFC2253
 115                                                 sb.Append (ASN1Convert.ToOid (poid));
 116                                                 sb.Append ("=");
 117                                         }
 118
 119                                         string sValue = null;
 120                                         // 16bits or 8bits string ? TODO not complete (+special chars!)
 121                                         if (s.Tag == 0x1E) {
 122                                                 // BMPSTRING
 123                                                 StringBuilder sb2 = new StringBuilder ();
 124                                                 for (int j = 1; j < s.Value.Length; j += 2)
 125                                                         sb2.Append ((char)s.Value[j]);
 126                                                 sValue = sb2.ToString ();
 127                                         } else {
 128                                                 sValue = System.Text.Encoding.UTF8.GetString (s.Value);
 129                                                 // in some cases we must quote (") the value
 130                                                 // Note: this doesn't seems to conform to RFC2253
 131                                                 char[] specials = { ',', '+', '"', '\\', '<', '>', ';' };
 132                                                 if (sValue.IndexOfAny (specials, 0, sValue.Length) > 0)
 133                                                         sValue = "\"" + sValue + "\"";
 134                                                 else if (sValue.StartsWith (" "))
 135                                                         sValue = "\"" + sValue + "\"";
 136                                                 else if (sValue.EndsWith (" "))
 137                                                         sValue = "\"" + sValue + "\"";
 138                                         }
 139
 140                                         sb.Append (sValue);
 141
 142                                         // separator (not on last iteration)
 143                                         if (k < entry.Count - 1)
 144                                                 sb.Append (", ");
 145                                 }
 146
 147                                 // separator (not on last iteration)
 148                                 if (i < seq.Count - 1)
 149                                         sb.Append (", ");
 150                         }
 151                         return sb.ToString ();
 152                 }
 153
 154                 static private X520.AttributeTypeAndValue GetAttributeFromOid (string attributeType)
 155                 {
 156                         switch (attributeType.ToUpper (CultureInfo.InvariantCulture).Trim ()) {
 157                                 case "C":
 158                                         return new X520.CountryName ();
 159                                 case "O":
 160                                         return new X520.OrganizationName ();
 161                                 case "OU":
 162                                         return new X520.OrganizationalUnitName ();
 163                                 case "CN":
 164                                         return new X520.CommonName ();
 165                                 case "L":
 166                                         return new X520.LocalityName ();
 167                                 case "S":       // Microsoft
 168                                 case "ST":      // RFC2253
 169                                         return new X520.StateOrProvinceName ();
 170                                 case "E":       // NOTE: Not part of RFC2253
 171                                         return new X520.EmailAddress ();
 172                                 case "DC":
 173 //                                      return streetAddress;
 174                                 case "UID":
 175 //                                      return domainComponent;
 176                                 default:
 177                                         return null;
 178                         }
 179                 }
 180
 181                 static public ASN1 FromString (string rdn)
 182                 {
 183                         if (rdn == null)
 184                                 throw new ArgumentNullException ("rdn");
 185                         // get string from here to ',' or end of string
 186                         int start = 0;
 187                         int end = 0;
 188                         ASN1 asn1 = new ASN1 (0x30);
 189                         while (start < rdn.Length) {
 190                                 end = rdn.IndexOf (',', end) + 1;
 191                                 if (end == 0)
 192                                         end = rdn.Length + 1;
 193                                 string av = rdn.Substring (start, end - start - 1);
 194                                 // get '=' position in substring
 195                                 int equal = av.IndexOf ('=');
 196                                 // get AttributeType
 197                                 string attributeType = av.Substring (0, equal);
 198                                 // get value
 199                                 string attributeValue = av.Substring (equal + 1);
 200
 201                                 X520.AttributeTypeAndValue atv = GetAttributeFromOid (attributeType);
 202                                 atv.Value = attributeValue;
 203                                 asn1.Add (new ASN1 (0x31, atv.GetBytes ()));
 204
 205                                 // next part
 206                                 start = end;
 207                                 if (start != - 1) {
 208                                         if (end > rdn.Length)
 209                                                 break;
 210                                 }
 211                         }
 212                         return asn1;
 213                 }
 214         }
 215 }