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

   1 //
   2 // X501Name.cs: X.501 Distinguished Names stuff
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (spouliot@motus.com)
   6 //
   7 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
   8 //
   9
  10 using System;
  11 using System.Text;
  12
  13 using Mono.Security;
  14
  15 namespace Mono.Security.X509 {
  16
  17         // References:
  18         // 1.   Information technology - Open Systems Interconnection - The Directory: Models
  19         //      http://www.itu.int/rec/recommendation.asp?type=items&lang=e&parent=T-REC-X.501-200102-I
  20         // 2.   RFC2253: Lightweight Directory Access Protocol (v3): UTF-8 String Representation of Distinguished Names
  21         //      http://www.ietf.org/rfc/rfc2253.txt
  22
  23         /*
  24          * Name ::= CHOICE { RDNSequence }
  25          *
  26          * RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
  27          *
  28          * RelativeDistinguishedName ::= SET OF AttributeTypeAndValue
  29          */
  30 #if INSIDE_CORLIB
  31         internal
  32 #else
  33         public
  34 #endif
  35         class X501 {
  36
  37                 static byte[] countryName = { 0x55, 0x04, 0x06 };
  38                 static byte[] organizationName = { 0x55, 0x04, 0x0A };
  39                 static byte[] organizationalUnitName = { 0x55, 0x04, 0x0B };
  40                 static byte[] commonName = { 0x55, 0x04, 0x03 };
  41                 static byte[] localityName = { 0x55, 0x04, 0x07 };
  42                 static byte[] stateOrProvinceName = { 0x55, 0x04, 0x08 };
  43                 static byte[] streetAddress = { 0x55, 0x04, 0x09 };
  44                 static byte[] serialNumber = { 0x55, 0x04, 0x05 };
  45                 static byte[] domainComponent = { 0x09, 0x92, 0x26, 0x89, 0x93, 0xF2, 0x2C, 0x64, 0x01, 0x19 };
  46                 static byte[] userid = { 0x09, 0x92, 0x26, 0x89, 0x93, 0xF2, 0x2C, 0x64, 0x01, 0x01 };
  47                 static byte[] email = { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x09, 0x01 };
  48
  49                 static public string ToString (ASN1 seq)
  50                 {
  51                         StringBuilder sb = new StringBuilder ();
  52                         for (int i = 0; i < seq.Count; i++) {
  53                                 ASN1 entry = seq [i];
  54                                 ASN1 pair = entry [0];
  55
  56                                 ASN1 s = pair [1];
  57                                 if (s == null)
  58                                         continue;
  59
  60                                 ASN1 poid = pair [0];
  61                                 if (poid == null)
  62                                         continue;
  63
  64                                 if (poid.CompareValue (countryName))
  65                                         sb.Append ("C=");
  66                                 else if (poid.CompareValue (organizationName))
  67                                         sb.Append ("O=");
  68                                 else if (poid.CompareValue (organizationalUnitName))
  69                                         sb.Append ("OU=");
  70                                 else if (poid.CompareValue (commonName))
  71                                         sb.Append ("CN=");
  72                                 else if (poid.CompareValue (localityName))
  73                                         sb.Append ("L=");
  74                                 else if (poid.CompareValue (stateOrProvinceName))
  75                                         sb.Append ("S=");       // NOTE: RFC2253 uses ST=
  76                                 else if (poid.CompareValue (streetAddress))
  77                                         sb.Append ("STREET=");
  78                                 else if (poid.CompareValue (domainComponent))
  79                                         sb.Append ("DC=");
  80                                 else if (poid.CompareValue (userid))
  81                                         sb.Append ("UID=");
  82                                 else if (poid.CompareValue (email))
  83                                         sb.Append ("E=");       // NOTE: Not part of RFC2253
  84                                 else {
  85                                         // unknown OID
  86                                         sb.Append ("OID.");     // NOTE: Not present as RFC2253
  87                                         sb.Append (ASN1Convert.ToOID (poid));
  88                                         sb.Append ("=");
  89                                 }
  90
  91                                 string sValue = null;
  92                                 // 16bits or 8bits string ? TODO not complete (+special chars!)
  93                                 if (s.Tag == 0x1E) {
  94                                         // BMPSTRING
  95                                         StringBuilder sb2 = new StringBuilder ();
  96                                         for (int j = 1; j < s.Value.Length; j+=2)
  97                                                 sb2.Append ((char) s.Value[j]);
  98                                         sValue = sb2.ToString ();
  99                                 }
 100                                 else {
 101                                         sValue = System.Text.Encoding.UTF8.GetString (s.Value);
 102                                         // in some cases we must quote (") the value
 103                                         // Note: this doesn't seems to conform to RFC2253
 104                                         char[] specials = { ',', '+', '"', '\\', '<', '>', ';' };
 105                                         if (sValue.IndexOfAny(specials, 0, sValue.Length) > 0)
 106                                                 sValue = "\"" + sValue + "\"";
 107                                         else if (sValue.StartsWith (" "))
 108                                                 sValue = "\"" + sValue + "\"";
 109                                         else if (sValue.EndsWith (" "))
 110                                                 sValue = "\"" + sValue + "\"";
 111                                 }
 112
 113                                 sb.Append (sValue);
 114
 115                                 // separator (not on last iteration)
 116                                 if (i < seq.Count - 1)
 117                                         sb.Append (", ");
 118                         }
 119                         return sb.ToString ();
 120                 }
 121
 122                 static private X520.AttributeTypeAndValue GetAttributeFromOID (string attributeType)
 123                 {
 124                         switch (attributeType.ToUpper ().Trim ()) {
 125                                 case "C":
 126                                         return new X520.CountryName ();
 127                                 case "O":
 128                                         return new X520.OrganizationName ();
 129                                 case "OU":
 130                                         return new X520.OrganizationalUnitName ();
 131                                 case "CN":
 132                                         return new X520.CommonName ();
 133                                 case "L":
 134                                         return new X520.LocalityName ();
 135                                 case "S":       // Microsoft
 136                                 case "ST":      // RFC2253
 137                                         return new X520.StateOrProvinceName ();
 138                                 case "DC":
 139 //                                      return streetAddress;
 140                                 case "UID":
 141 //                                      return domainComponent;
 142                                         return null;
 143
 144                                 default:
 145                                         return null;
 146                         }
 147                 }
 148
 149                 static public ASN1 FromString (string rdn)
 150                 {
 151                         if (rdn == null)
 152                                 throw new ArgumentNullException ("rdn");
 153                         // get string from here to ',' or end of string
 154                         int start = 0;
 155                         int end = 0;
 156                         ASN1 asn1 = new ASN1 (0x30);
 157                         while (start < rdn.Length) {
 158                                 end = rdn.IndexOf (',', end) + 1;
 159                                 if (end == 0)
 160                                         end = rdn.Length + 1;
 161                                 string av = rdn.Substring (start, end - start - 1);
 162                                 // get '=' position in substring
 163                                 int equal = av.IndexOf ('=');
 164                                 // get AttributeType
 165                                 string attributeType = av.Substring (0, equal);
 166                                 // get value
 167                                 string attributeValue = av.Substring (equal + 1);
 168
 169                                 X520.AttributeTypeAndValue atv = GetAttributeFromOID (attributeType);
 170                                 atv.Value = attributeValue;
 171                                 asn1.Add (new ASN1 (0x31, atv.GetBytes ()));
 172
 173                                 // next part
 174                                 start = end;
 175                                 if (start != - 1) {
 176                                         if (end > rdn.Length)
 177                                                 break;
 178                                 }
 179                         }
 180                         return asn1;
 181                 }
 182         }
 183 }