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1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System.Reflection;
29using System.Text;
30using log4net;
31using OpenMetaverse;
32using OpenSim.Framework;
33using OpenSim.Services.Interfaces;
34
35namespace OpenSim.Framework.Serialization
36{
37 /// <summary>
38 /// Resolves OpenSim Profile Anchors (OSPA). An OSPA is a string used to provide information for
39 /// identifying user profiles or supplying a simple name if no profile is available.
40 /// </summary>
41 public class OspResolver
42 {
43 private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
44
45 public const string OSPA_PREFIX = "ospa:";
46 public const string OSPA_NAME_KEY = "n";
47 public const string OSPA_NAME_VALUE_SEPARATOR = " ";
48 public const string OSPA_TUPLE_SEPARATOR = "|";
49 public static readonly char[] OSPA_TUPLE_SEPARATOR_ARRAY = OSPA_TUPLE_SEPARATOR.ToCharArray();
50 public const string OSPA_PAIR_SEPARATOR = "=";
51
52 /// <summary>
53 /// Make an OSPA given a user UUID
54 /// </summary>
55 /// <param name="userId"></param>
56 /// <param name="commsManager"></param>
57 /// <returns>The OSPA. Null if a user with the given UUID could not be found.</returns>
58 public static string MakeOspa(UUID userId, IUserAccountService userService)
59 {
60 UserAccount account = userService.GetUserAccount(UUID.Zero, userId);
61 if (account != null)
62 return MakeOspa(account.FirstName, account.LastName);
63
64 return null;
65 }
66
67 /// <summary>
68 /// Make an OSPA given a user name
69 /// </summary>
70 /// <param name="name"></param>
71 /// <returns></returns>
72 public static string MakeOspa(string firstName, string lastName)
73 {
74 return
75 OSPA_PREFIX + OSPA_NAME_KEY + OSPA_PAIR_SEPARATOR + firstName + OSPA_NAME_VALUE_SEPARATOR + lastName;
76 }
77
78 /// <summary>
79 /// Resolve an osp string into the most suitable internal OpenSim identifier.
80 /// </summary>
81 ///
82 /// In some cases this will be a UUID if a suitable profile exists on the system. In other cases, this may
83 /// just return the same identifier after creating a temporary profile.
84 ///
85 /// <param name="ospa"></param>
86 /// <param name="commsManager"></param>
87 /// <returns>
88 /// A suitable UUID for use in Second Life client communication. If the string was not a valid ospa, then UUID.Zero
89 /// is returned.
90 /// </returns>
91 public static UUID ResolveOspa(string ospa, IUserAccountService userService)
92 {
93 if (!ospa.StartsWith(OSPA_PREFIX))
94 return UUID.Zero;
95
96// m_log.DebugFormat("[OSP RESOLVER]: Resolving {0}", ospa);
97
98 string ospaMeat = ospa.Substring(OSPA_PREFIX.Length);
99 string[] ospaTuples = ospaMeat.Split(OSPA_TUPLE_SEPARATOR_ARRAY);
100
101 foreach (string tuple in ospaTuples)
102 {
103 int tupleSeparatorIndex = tuple.IndexOf(OSPA_PAIR_SEPARATOR);
104
105 if (tupleSeparatorIndex < 0)
106 {
107 m_log.WarnFormat("[OSP RESOLVER]: Ignoring non-tuple component {0} in OSPA {1}", tuple, ospa);
108 continue;
109 }
110
111 string key = tuple.Remove(tupleSeparatorIndex).Trim();
112 string value = tuple.Substring(tupleSeparatorIndex + 1).Trim();
113
114 if (OSPA_NAME_KEY == key)
115 return ResolveOspaName(value, userService);
116 }
117
118 return UUID.Zero;
119 }
120
121 /// <summary>
122 /// Hash a profile name into a UUID
123 /// </summary>
124 /// <param name="name"></param>
125 /// <returns></returns>
126 public static UUID HashName(string name)
127 {
128 return new UUID(Utils.MD5(Encoding.Unicode.GetBytes(name)), 0);
129 }
130
131 /// <summary>
132 /// Resolve an OSPI name by querying existing persistent user profiles. If there is no persistent user profile
133 /// then a temporary user profile is inserted in the cache.
134 /// </summary>
135 /// <param name="name"></param>
136 /// <param name="commsManager"></param>
137 /// <returns>
138 /// An OpenSim internal identifier for the name given. Returns null if the name was not valid
139 /// </returns>
140 protected static UUID ResolveOspaName(string name, IUserAccountService userService)
141 {
142 if (userService == null)
143 return UUID.Zero;
144
145 int nameSeparatorIndex = name.IndexOf(OSPA_NAME_VALUE_SEPARATOR);
146
147 if (nameSeparatorIndex < 0)
148 {
149 m_log.WarnFormat("[OSP RESOLVER]: Ignoring unseparated name {0}", name);
150 return UUID.Zero;
151 }
152
153 string firstName = name.Remove(nameSeparatorIndex).TrimEnd();
154 string lastName = name.Substring(nameSeparatorIndex + 1).TrimStart();
155
156 UserAccount account = userService.GetUserAccount(UUID.Zero, firstName, lastName);
157 if (account != null)
158 return account.PrincipalID;
159
160 // XXX: Disable temporary user profile creation for now as implementation is incomplete - justincc
161 /*
162 UserProfileData tempUserProfile = new UserProfileData();
163 tempUserProfile.FirstName = firstName;
164 tempUserProfile.SurName = lastName;
165 tempUserProfile.ID = HashName(tempUserProfile.Name);
166
167 m_log.DebugFormat(
168 "[OSP RESOLVER]: Adding temporary user profile for {0} {1}", tempUserProfile.Name, tempUserProfile.ID);
169 commsManager.UserService.AddTemporaryUserProfile(tempUserProfile);
170
171 return tempUserProfile.ID;
172 */
173
174 return UUID.Zero;
175 }
176 }
177}