src/DotNetOpenAuth/OpenId/Extensions/ProviderAuthenticationPolicy/PapeUtilities.cs

   1 //-----------------------------------------------------------------------
   2 // <copyright file="PapeUtilities.cs" company="Andrew Arnott">
   3 //     Copyright (c) Andrew Arnott. All rights reserved.
   4 // </copyright>
   5 //-----------------------------------------------------------------------
   6
   7 namespace DotNetOpenAuth.OpenId.Extensions.ProviderAuthenticationPolicy {
   8         using System;
   9         using System.Collections.Generic;
  10         using System.Globalization;
  11         using System.Linq;
  12         using System.Text;
  13         using DotNetOpenAuth.Messaging;
  14
  15         internal static class PapeUtilities {
  16                 /// <summary>
  17                 /// Looks at the incoming fields and figures out what the aliases and name spaces for auth level types are.
  18                 /// </summary>
  19                 internal static AliasManager FindIncomingAliases(IDictionary<string, string> fields) {
  20                         AliasManager aliasManager = new AliasManager();
  21
  22                         foreach (var pair in fields) {
  23                                 if (!pair.Key.StartsWith(Constants.AuthLevelNamespaceDeclarationPrefix, StringComparison.Ordinal)) {
  24                                         continue;
  25                                 }
  26
  27                                 string alias = pair.Key.Substring(Constants.AuthLevelNamespaceDeclarationPrefix.Length);
  28                                 aliasManager.SetAlias(alias, pair.Value);
  29                         }
  30
  31                         aliasManager.SetPreferredAliasesWhereNotSet(Constants.AuthenticationLevels.PreferredTypeUriToAliasMap);
  32
  33                         return aliasManager;
  34                 }
  35
  36                 internal static string ConcatenateListOfElements(IList<string> values) {
  37                         ErrorUtilities.VerifyArgumentNotNull(values, "values");
  38
  39                         StringBuilder valuesList = new StringBuilder();
  40                         foreach (string value in values.Distinct()) {
  41                                 if (value.Contains(" ")) {
  42                                         throw new FormatException(string.Format(CultureInfo.CurrentCulture,
  43                                                 OpenIdStrings.InvalidUri, value));
  44                                 }
  45                                 valuesList.Append(value);
  46                                 valuesList.Append(" ");
  47                         }
  48                         if (valuesList.Length > 0) {
  49                                 valuesList.Length -= 1; // remove trailing space
  50                         }
  51                         return valuesList.ToString();
  52                 }
  53         }
  54 }