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-rw-r--r--OpenSim/Framework/Communications/Cache/AuthedSessionCache.cs107
1 files changed, 107 insertions, 0 deletions
diff --git a/OpenSim/Framework/Communications/Cache/AuthedSessionCache.cs b/OpenSim/Framework/Communications/Cache/AuthedSessionCache.cs
new file mode 100644
index 0000000..b989997
--- /dev/null
+++ b/OpenSim/Framework/Communications/Cache/AuthedSessionCache.cs
@@ -0,0 +1,107 @@
1using System;
2using System.Collections.Generic;
3using System.Text;
4
5namespace OpenSim.Framework.Communications.Cache
6{
7 public class AuthedSessionCache
8 {
9 public class CacheData
10 {
11 private static readonly DateTime UNIX_EPOCH = new DateTime(1970, 1, 1);
12 private string m_session_id;
13 private string m_agent_id;
14 private int m_expire;
15
16 private int get_current_unix_time()
17 {
18 return (int)(DateTime.UtcNow - UNIX_EPOCH).TotalSeconds;
19 }
20
21 public CacheData(string sid, string aid)
22 {
23 m_session_id = sid;
24 m_agent_id = aid;
25 m_expire = get_current_unix_time() + DEFAULT_LIFETIME;
26 }
27
28 public CacheData(string sid, string aid, int time_now)
29 {
30 m_session_id = sid;
31 m_agent_id = aid;
32 m_expire = time_now + DEFAULT_LIFETIME;
33 }
34
35 public string SessionID
36 {
37 get { return m_session_id; }
38 set { m_session_id = value; }
39 }
40
41 public string AgentID
42 {
43 get { return m_agent_id; }
44 set { m_agent_id = value; }
45 }
46
47 public bool isExpired
48 {
49 get { return m_expire < get_current_unix_time(); }
50 }
51
52 public void Renew()
53 {
54 m_expire = get_current_unix_time() + DEFAULT_LIFETIME;
55 }
56 }
57
58 private static readonly int DEFAULT_LIFETIME = 30;
59 private Dictionary<string, CacheData> m_authed_sessions = new Dictionary<string,CacheData>();
60 private int m_session_lifetime = DEFAULT_LIFETIME;
61
62 public AuthedSessionCache()
63 {
64 m_session_lifetime = DEFAULT_LIFETIME;
65 }
66
67 public AuthedSessionCache(int timeout)
68 {
69 m_session_lifetime = timeout;
70 }
71
72 public CacheData getCachedSession(string session_id, string agent_id)
73 {
74 CacheData ret = null;
75 lock (m_authed_sessions)
76 {
77 if (m_authed_sessions.ContainsKey(session_id))
78 {
79 CacheData cached_session = m_authed_sessions[session_id];
80 if (!cached_session.isExpired && cached_session.AgentID == agent_id)
81 {
82 ret = m_authed_sessions[session_id];
83 // auto renew
84 m_authed_sessions[session_id].Renew();
85 }
86 }
87 }
88 return ret;
89 }
90
91 public void Add(string session_id, string agent_id)
92 {
93 CacheData data = new CacheData(session_id, agent_id);
94 lock (m_authed_sessions)
95 {
96 if (m_authed_sessions.ContainsKey(session_id))
97 {
98 m_authed_sessions[session_id] = data;
99 }
100 else
101 {
102 m_authed_sessions.Add(session_id, data);
103 }
104 }
105 }
106 }
107}