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authorMelanie2009-08-29 17:37:41 +0100
committerMelanie2009-08-29 17:37:41 +0100
commitdce04df4f229cbf5636a096c834202dec7cd1765 (patch)
treec0c10b2472163df93dcb0e4d105a6e921cc84379
parentAdd a slow cache cleaner thread. By default, the thread starts a cleanup (diff)
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Redesign the IAuthenticationService interface to use PKI. Sessioning is
now in the domain of the presence module where it belongs.
Diffstat
-rw-r--r--OpenSim/Services/AuthenticationService/AuthenticationService.cs312
-rw-r--r--OpenSim/Services/Interfaces/IAuthenticationService.cs108
2 files changed, 70 insertions, 350 deletions
diff --git a/OpenSim/Services/AuthenticationService/AuthenticationService.cs b/OpenSim/Services/AuthenticationService/AuthenticationService.cs
deleted file mode 100644
index b81a004..0000000
--- a/OpenSim/Services/AuthenticationService/AuthenticationService.cs
+++ /dev/null
@@ -1,312 +0,0 @@
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;
29using System.Collections.Generic;
30using System.Reflection;
31using Nini.Config;
32using log4net;
33using OpenSim.Framework;
34using OpenSim.Data;
35using OpenSim.Services.Base;
36using OpenSim.Services.Interfaces;
37using OpenMetaverse;
38
39namespace OpenSim.Services.AuthenticationService
40{
41 /// <summary>
42 /// Simple authentication service implementation dealing only with users.
43 /// It uses the user DB directly to access user information.
44 /// It takes two config vars:
45 /// - Authenticate = {true|false} : to do or not to do authentication
46 /// - Authority = string like "osgrid.org" : this identity authority
47 /// that will be called back for identity verification
48 /// </summary>
49 public class HGAuthenticationService : ServiceBase, IAuthenticationService
50 {
51 private static readonly ILog m_log
52 = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
53
54 protected IUserDataPlugin m_Database;
55 protected string m_AuthorityURL;
56 protected bool m_PerformAuthentication;
57 protected Dictionary<UUID, List<string>> m_UserKeys = new Dictionary<UUID, List<string>>();
58
59
60 public HGAuthenticationService(IConfigSource config) : base(config)
61 {
62 string dllName = String.Empty;
63 string connString = String.Empty;
64
65 //
66 // Try reading the [DatabaseService] section first, if it exists
67 //
68 IConfig dbConfig = config.Configs["DatabaseService"];
69 if (dbConfig != null)
70 {
71 dllName = dbConfig.GetString("StorageProvider", String.Empty);
72 connString = dbConfig.GetString("ConnectionString", String.Empty);
73 }
74
75 //
76 // Try reading the more specific [InventoryService] section, if it exists
77 //
78 IConfig authConfig = config.Configs["AuthenticationService"];
79 if (authConfig != null)
80 {
81 dllName = authConfig.GetString("StorageProvider", dllName);
82 connString = authConfig.GetString("ConnectionString", connString);
83
84 m_PerformAuthentication = authConfig.GetBoolean("Authenticate", true);
85 m_AuthorityURL = "http://" + authConfig.GetString("Authority", "localhost");
86 if (!m_AuthorityURL.EndsWith("/"))
87 m_AuthorityURL += "/";
88 }
89
90 //
91 // We tried, but this doesn't exist. We can't proceed.
92 //
93 if (dllName.Equals(String.Empty))
94 throw new Exception("No InventoryService configuration");
95
96 m_Database = LoadPlugin<IUserDataPlugin>(dllName);
97 if (m_Database == null)
98 throw new Exception("Could not find a storage interface in the given module");
99
100 m_Database.Initialise(connString);
101 }
102
103 public UUID AuthenticateKey(UUID principalID, string key)
104 {
105 bool writeAgentData = false;
106
107 UserAgentData agent = m_Database.GetAgentByUUID(principalID);
108 if (agent == null)
109 {
110 agent = new UserAgentData();
111 agent.ProfileID = principalID;
112 agent.SessionID = UUID.Random();
113 agent.SecureSessionID = UUID.Random();
114 agent.AgentIP = "127.0.0.1";
115 agent.AgentPort = 0;
116 agent.AgentOnline = false;
117
118 writeAgentData = true;
119 }
120
121 if (!m_PerformAuthentication)
122 {
123 if (writeAgentData)
124 m_Database.AddNewUserAgent(agent);
125 return agent.SessionID;
126 }
127
128 if (!VerifyKey(principalID, key))
129 return UUID.Zero;
130
131 if (writeAgentData)
132 m_Database.AddNewUserAgent(agent);
133
134 return agent.SessionID;
135 }
136
137 /// <summary>
138 /// This implementation only authenticates users.
139 /// </summary>
140 /// <param name="principalID"></param>
141 /// <param name="password"></param>
142 /// <returns></returns>
143 public UUID AuthenticatePassword(UUID principalID, string password)
144 {
145 bool writeAgentData = false;
146
147 UserAgentData agent = m_Database.GetAgentByUUID(principalID);
148 if (agent == null)
149 {
150 agent = new UserAgentData();
151 agent.ProfileID = principalID;
152 agent.SessionID = UUID.Random();
153 agent.SecureSessionID = UUID.Random();
154 agent.AgentIP = "127.0.0.1";
155 agent.AgentPort = 0;
156 agent.AgentOnline = false;
157
158 writeAgentData = true;
159 }
160
161 if (!m_PerformAuthentication)
162 {
163 if (writeAgentData)
164 m_Database.AddNewUserAgent(agent);
165 return agent.SessionID;
166 }
167
168 UserProfileData profile = m_Database.GetUserByUUID(principalID);
169 bool passwordSuccess = false;
170 m_log.InfoFormat("[AUTH]: Authenticating {0} {1} ({2})", profile.FirstName, profile.SurName, profile.ID);
171
172 // we do this to get our hash in a form that the server password code can consume
173 // when the web-login-form submits the password in the clear (supposed to be over SSL!)
174 if (!password.StartsWith("$1$"))
175 password = "$1$" + Util.Md5Hash(password);
176
177 password = password.Remove(0, 3); //remove $1$
178
179 string s = Util.Md5Hash(password + ":" + profile.PasswordSalt);
180 // Testing...
181 //m_log.Info("[LOGIN]: SubHash:" + s + " userprofile:" + profile.passwordHash);
182 //m_log.Info("[LOGIN]: userprofile:" + profile.passwordHash + " SubCT:" + password);
183
184 passwordSuccess = (profile.PasswordHash.Equals(s.ToString(), StringComparison.InvariantCultureIgnoreCase)
185 || profile.PasswordHash.Equals(password, StringComparison.InvariantCulture));
186
187 if (!passwordSuccess)
188 return UUID.Zero;
189
190 if (writeAgentData)
191 m_Database.AddNewUserAgent(agent);
192
193 return agent.SessionID;
194 }
195
196 /// <summary>
197 /// This generates authorization keys in the form
198 /// http://authority/uuid
199 /// after verifying that the caller is, indeed, authorized to request a key
200 /// </summary>
201 /// <param name="userID">The principal ID requesting the new key</param>
202 /// <param name="authToken">The original authorization token for that principal, obtained during login</param>
203 /// <returns></returns>
204 public string GetKey(UUID principalID, string authToken)
205 {
206 UserProfileData profile = m_Database.GetUserByUUID(principalID);
207 string newKey = string.Empty;
208
209 if (profile != null)
210 {
211 m_log.DebugFormat("[AUTH]: stored auth token is {0}. Given token is {1}", profile.WebLoginKey.ToString(), authToken);
212 // I'm overloading webloginkey for this, so that no changes are needed in the DB
213 // The uses of webloginkey are fairly mutually exclusive
214 if (profile.WebLoginKey.ToString().Equals(authToken))
215 {
216 newKey = UUID.Random().ToString();
217 List<string> keys;
218 lock (m_UserKeys)
219 {
220 if (m_UserKeys.ContainsKey(principalID))
221 {
222 keys = m_UserKeys[principalID];
223 }
224 else
225 {
226 keys = new List<string>();
227 m_UserKeys.Add(principalID, keys);
228 }
229 keys.Add(newKey);
230 }
231 m_log.InfoFormat("[AUTH]: Successfully generated new auth key for {0}", principalID);
232 }
233 else
234 m_log.Warn("[AUTH]: Unauthorized key generation request. Denying new key.");
235 }
236 else
237 m_log.Warn("[AUTH]: Principal not found.");
238
239 return m_AuthorityURL + newKey;
240 }
241
242 /// <summary>
243 /// This verifies the uuid portion of the key given out by GenerateKey
244 /// </summary>
245 /// <param name="userID"></param>
246 /// <param name="key"></param>
247 /// <returns></returns>
248 public bool VerifyKey(UUID userID, string key)
249 {
250 lock (m_UserKeys)
251 {
252 if (m_UserKeys.ContainsKey(userID))
253 {
254 List<string> keys = m_UserKeys[userID];
255 if (keys.Contains(key))
256 {
257 // Keys are one-time only, so remove it
258 keys.Remove(key);
259 return true;
260 }
261 return false;
262 }
263 else
264 return false;
265 }
266 }
267
268 public UUID CreateUserSession(UUID userID, UUID oldSessionID)
269 {
270 UserAgentData agent = m_Database.GetAgentByUUID(userID);
271
272 if (agent == null)
273 return UUID.Zero;
274
275 agent.SessionID = UUID.Random();
276
277 m_Database.AddNewUserAgent(agent);
278 return agent.SessionID;
279 }
280
281 public bool VerifyUserSession(UUID userID, UUID sessionID)
282 {
283 UserProfileData userProfile = m_Database.GetUserByUUID(userID);
284
285 if (userProfile != null && userProfile.CurrentAgent != null)
286 {
287 m_log.DebugFormat("[AUTH]: Verifying session {0} for {1}; current session {2}", sessionID, userID, userProfile.CurrentAgent.SessionID);
288 if (userProfile.CurrentAgent.SessionID == sessionID)
289 {
290 return true;
291 }
292 }
293
294 return false;
295 }
296
297 public bool DestroyUserSession(UUID userID, UUID sessionID)
298 {
299 if (!VerifyUserSession(userID, sessionID))
300 return false;
301
302 UserAgentData agent = m_Database.GetAgentByUUID(userID);
303 if (agent == null)
304 return false;
305
306 agent.SessionID = UUID.Zero;
307 m_Database.AddNewUserAgent(agent);
308
309 return true;
310 }
311 }
312}
diff --git a/OpenSim/Services/Interfaces/IAuthenticationService.cs b/OpenSim/Services/Interfaces/IAuthenticationService.cs
index 2402414..d473cf8 100644
--- a/OpenSim/Services/Interfaces/IAuthenticationService.cs
+++ b/OpenSim/Services/Interfaces/IAuthenticationService.cs
@@ -38,57 +38,89 @@ namespace OpenSim.Services.Interfaces
38 // 38 //
39 public interface IAuthenticationService 39 public interface IAuthenticationService
40 { 40 {
41 ////////////////////////////////////////////////// 41 //////////////////////////////////////////////////////
42 // Web login key portion 42 // PKI Zone!
43 // 43 //
44 44 // HG2 authentication works by using a cryptographic
45 // Get a service key given that principal's 45 // exchange.
46 // authentication token (master key). 46 // This method must provide a public key, the other
47 // crypto methods must understand hoow to deal with
48 // messages encrypted to it.
47 // 49 //
48 string GetKey(UUID principalID, string authToken); 50 // If the public key is of zero length, you will
49 51 // get NO encryption and NO security.
50 // Verify that a principal key is valid 52 //
53 // For non-HG installations, this is not relevant
51 // 54 //
52 bool VerifyKey(UUID principalID, string key); 55 // Implementors who are not using PKI can treat the
56 // cyphertext as a string and provide a zero-length
57 // key. Encryptionless implementations will not
58 // interoperate with implementations using encryption.
59 // If one side uses encryption, both must do so.
60 //
61 byte[] GetPublicKey();
53 62
54 ////////////////////////////////////////////////// 63 //////////////////////////////////////////////////////
55 // Password auth portion 64 // Authentication
65 //
66 // These methods will return a token, which can be used to access
67 // various services.
68 //
69 // The encrypted versions take the received cyphertext and
70 // the public key of the peer, which the connector must have
71 // obtained using a remote GetPublicKey call.
56 // 72 //
73 string AuthenticatePassword(UUID principalID, string password);
74 byte[] AuthenticatePasswordEncrypted(byte[] cyphertext, byte[] key);
57 75
58 // Here's how thos works, and why. 76 string AuthenticateWebkey(UUID principalID, string webkey);
59 // 77 byte[] AuthenticateWebkeyEncrypted(byte[] cyphertext, byte[] key);
60 // The authentication methods will return the existing session,
61 // or UUID.Zero if authentication failed. If there is no session,
62 // they will create one.
63 // The CreateUserSession method will unconditionally create a session
64 // and invalidate the prior session.
65 // Grid login uses this method to make sure that the session is
66 // fresh and new. Other software, like management applications,
67 // can obtain this existing session if they have a key or password
68 // for that account, this allows external apps to obtain credentials
69 // and use authenticating interface methods.
70 //
71
72 // Check the pricipal's password
73 //
74 UUID AuthenticatePassword(UUID principalID, string password);
75 78
76 // Check the principal's key 79 //////////////////////////////////////////////////////
80 // Verification
77 // 81 //
78 UUID AuthenticateKey(UUID principalID, string password); 82 // Allows to verify the authenticity of a token
83 //
84 // Tokens expire after 30 minutes and can be refreshed by
85 // re-verifying.
86 //
87 // If encrypted authentication was used, encrypted verification
88 // must be used to refresh. Unencrypted verification is still
89 // performed, but doesn't refresh token lifetime.
90 //
91 bool Verify(UUID principalID, string token);
92 bool VerifyEncrypted(byte[] cyphertext, byte[] key);
79 93
80 // Create a new session, invalidating the old ones 94 //////////////////////////////////////////////////////
95 // Teardown
96 //
97 // A token can be returned before the timeout. This
98 // invalidates it and it can not subsequently be used
99 // or refreshed.
100 //
101 // Tokens created by encrypted authentication must
102 // be returned by encrypted release calls;
81 // 103 //
82 UUID CreateUserSession(UUID principalID, UUID oldSessionID); 104 bool Release(UUID principalID, string token);
105 bool ReleaseEncrypted(byte[] cyphertext, byte[] key);
83 106
84 // Verify that a user session ID is valid. A session ID is 107 //////////////////////////////////////////////////////
85 // considered valid when a user has successfully authenticated 108 // Grid
86 // at least one time inside that session.
87 // 109 //
88 bool VerifyUserSession(UUID principalID, UUID sessionID); 110 // We no longer need a shared secret between grid
111 // servers. Anything a server requests from another
112 // server is either done on behalf of a user, in which
113 // case there is a token, or on behalf of a region,
114 // which has a session. So, no more keys.
115 // If sniffing on the local lan is an issue, admins
116 // need to take approriate action (IPSec is recommended)
117 // to secure inter-server traffic.
89 118
90 // Deauthenticate user 119 //////////////////////////////////////////////////////
120 // NOTE
91 // 121 //
92 bool DestroyUserSession(UUID principalID, UUID sessionID); 122 // Session IDs are not handled here. After obtaining
123 // a token, the session ID regions use can be
124 // obtained from the presence service.
93 } 125 }
94} 126}
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