mcs/class/System.Runtime.Remoting/MonoHttp/Utility.cs

   1
   2
   3 using System;
   4 using System.Text;
   5
   6 namespace MonoHttp
   7 {
   8         class Utility
   9         {
  10
  11                 #region from System.Uri
  12
  13                 internal static bool MaybeUri (string s)
  14                 {
  15                         int p = s.IndexOf (':');
  16                         if (p == -1)
  17                                 return false;
  18
  19                         if (p >= 10)
  20                                 return false;
  21
  22                         return IsPredefinedScheme (s.Substring (0, p));
  23                 }
  24
  25                 private static bool IsPredefinedScheme (string scheme)
  26                 {
  27                         switch (scheme) {
  28                         case "http":
  29                         case "https":
  30                         case "file":
  31                         case "ftp":
  32                         case "nntp":
  33                         case "gopher":
  34                         case "mailto":
  35                         case "news":
  36 #if NET_2_0
  37                         case "net.pipe":
  38                         case "net.tcp":
  39 #endif
  40                                 return true;
  41                         default:
  42                                 return false;
  43                         }
  44                 }
  45
  46                 #endregion
  47
  48                 #region from System.Net.Cookiie
  49
  50                 internal static string ToClientString (System.Net.Cookie cookie)
  51                 {
  52                         if (cookie.Name.Length == 0)
  53                                 return String.Empty;
  54
  55                         StringBuilder result = new StringBuilder (64);
  56
  57                         if (cookie.Version > 0)
  58                                 result.Append ("Version=").Append (cookie.Version).Append (";");
  59
  60                         result.Append (cookie.Name).Append ("=").Append (cookie.Value);
  61
  62                         if (cookie.Path != null && cookie.Path.Length != 0)
  63                                 result.Append (";Path=").Append (QuotedString (cookie, cookie.Path));
  64
  65                         if (cookie.Domain != null && cookie.Domain.Length != 0)
  66                                 result.Append (";Domain=").Append (QuotedString (cookie, cookie.Domain));
  67
  68                         if (cookie.Port != null && cookie.Port.Length != 0)
  69                                 result.Append (";Port=").Append (cookie.Port);
  70
  71                         return result.ToString ();
  72                 }
  73
  74                 // See par 3.6 of RFC 2616
  75                 static string QuotedString (System.Net.Cookie cookie, string value)
  76                 {
  77                         if (cookie.Version == 0 || IsToken (value))
  78                                 return value;
  79                         else
  80                                 return "\"" + value.Replace("\"", "\\\"") + "\"";
  81                 }
  82
  83                 static bool IsToken (string value)
  84                 {
  85                         int len = value.Length;
  86                         for (int i = 0; i < len; i++) {
  87                                 char c = value [i];
  88                                 if (c < 0x20 || c >= 0x7f || tspecials.IndexOf (c) != -1)
  89                                         return false;
  90                         }
  91                         return true;
  92                 }
  93
  94                  static string tspecials = "()<>@,;:\\\"/[]?={} \t";   // from RFC 2965, 2068
  95
  96                 #endregion
  97         }
  98 }