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core/sessionmanager.lua @ 1301:d10d84f755b5
sessionmanager: It really is username@host, not host@username :)
| author | Waqas Hussain <waqas20@gmail.com> |
|---|---|
| date | Thu, 04 Jun 2009 05:54:32 +0500 |
| parent | 1290:c253905a8a55 |
| child | 1379:03d8a930053f |
| rev | line source |
|---|---|
| 896 | 1 -- Prosody IM v0.4 |
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2 -- Copyright (C) 2008-2009 Matthew Wild |
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3 -- Copyright (C) 2008-2009 Waqas Hussain |
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4 -- |
| 758 | 5 -- This project is MIT/X11 licensed. Please see the |
| 6 -- COPYING file in the source package for more information. | |
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7 -- |
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8 |
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9 |
| 30 | 10 |
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11 local tonumber, tostring = tonumber, tostring; |
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12 local ipairs, pairs, print, next= ipairs, pairs, print, next; |
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13 local collectgarbage = collectgarbage; |
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14 local m_random = import("math", "random"); |
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15 local format = import("string", "format"); |
| 38 | 16 |
| 17 local hosts = hosts; | |
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18 local full_sessions = full_sessions; |
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19 local bare_sessions = bare_sessions; |
| 38 | 20 |
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21 local modulemanager = require "core.modulemanager"; |
| 30 | 22 local log = require "util.logger".init("sessionmanager"); |
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23 local error = error; |
| 145 | 24 local uuid_generate = require "util.uuid".generate; |
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25 local rm_load_roster = require "core.rostermanager".load_roster; |
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26 local config_get = require "core.configmanager".get; |
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27 local nameprep = require "util.encodings".stringprep.nameprep; |
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28 |
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29 local fire_event = require "core.eventmanager".fire_event; |
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30 |
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31 local gettime = require "socket".gettime; |
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32 |
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33 local st = require "util.stanza"; |
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34 |
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35 local newproxy = newproxy; |
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36 local getmetatable = getmetatable; |
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37 |
| 30 | 38 module "sessionmanager" |
| 39 | |
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40 local open_sessions = 0; |
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41 |
| 30 | 42 function new_session(conn) |
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43 local session = { conn = conn, priority = 0, type = "c2s_unauthed", conntime = gettime() }; |
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44 if true then |
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45 session.trace = newproxy(true); |
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46 getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; end; |
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47 end |
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48 open_sessions = open_sessions + 1; |
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49 log("debug", "open sessions now: ".. open_sessions); |
| 30 | 50 local w = conn.write; |
| 51 session.send = function (t) w(tostring(t)); end | |
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52 session.ip = conn.ip(); |
| 30 | 53 return session; |
| 54 end | |
| 55 | |
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56 function destroy_session(session, err) |
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57 (session.log or log)("info", "Destroying session for %s (%s@%s)", session.full_jid or "(unknown)", session.username or "(unknown)", session.host or "(unknown)"); |
| 331 | 58 |
| 59 -- Send unavailable presence | |
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60 if session.presence then |
| 331 | 61 local pres = st.presence{ type = "unavailable" }; |
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62 if (not err) or err == "closed" then err = "connection closed"; end |
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63 pres:tag("status"):text("Disconnected: "..err):up(); |
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64 session:dispatch_stanza(pres); |
| 331 | 65 end |
| 66 | |
| 67 -- Remove session/resource from user's session list | |
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68 if session.full_jid then |
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69 hosts[session.host].sessions[session.username].sessions[session.resource] = nil; |
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70 full_sessions[session.full_jid] = nil; |
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71 |
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72 if not next(hosts[session.host].sessions[session.username].sessions) then |
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73 log("debug", "All resources of %s are now offline", session.username); |
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74 hosts[session.host].sessions[session.username] = nil; |
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75 bare_sessions[session.username..'@'..session.host] = nil; |
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76 end |
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77 end |
| 331 | 78 |
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79 for k in pairs(session) do |
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80 if k ~= "trace" then |
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81 session[k] = nil; |
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82 end |
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83 end |
| 38 | 84 end |
| 85 | |
| 86 function make_authenticated(session, username) | |
| 87 session.username = username; | |
| 88 if session.type == "c2s_unauthed" then | |
| 89 session.type = "c2s"; | |
| 90 end | |
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91 session.log("info", "Authenticated as %s@%s", username or "(unknown)", session.host or "(unknown)"); |
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92 return true; |
| 38 | 93 end |
| 94 | |
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95 -- returns true, nil on success |
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96 -- returns nil, err_type, err, err_message on failure |
| 38 | 97 function bind_resource(session, resource) |
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98 if not session.username then return nil, "auth", "not-authorized", "Cannot bind resource before authentication"; end |
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99 if session.resource then return nil, "cancel", "already-bound", "Cannot bind multiple resources on a single connection"; end |
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100 -- We don't support binding multiple resources |
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101 |
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102 resource = resource or uuid_generate(); |
| 38 | 103 --FIXME: Randomly-generated resources must be unique per-user, and never conflict with existing |
| 104 | |
| 105 if not hosts[session.host].sessions[session.username] then | |
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106 local sessions = { sessions = {} }; |
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107 hosts[session.host].sessions[session.username] = sessions; |
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108 bare_sessions[session.username..'@'..session.host] = sessions; |
| 38 | 109 else |
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110 local sessions = hosts[session.host].sessions[session.username].sessions; |
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111 local limit = config_get(session.host, "core", "max_resources") or 10; |
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112 if #sessions >= limit then |
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113 return nil, "cancel", "conflict", "Resource limit reached; only "..limit.." resources allowed"; |
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114 end |
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115 if sessions[resource] then |
| 38 | 116 -- Resource conflict |
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117 local policy = config_get(session.host, "core", "conflict_resolve"); |
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118 local increment; |
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119 if policy == "random" then |
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120 resource = uuid_generate(); |
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121 increment = true; |
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122 elseif policy == "increment" then |
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123 increment = true; -- TODO ping old resource |
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124 elseif policy == "kick_new" then |
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125 return nil, "cancel", "conflict", "Resource already exists"; |
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126 else -- if policy == "kick_old" then |
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127 sessions[resource]:close { |
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128 condition = "conflict"; |
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129 text = "Replaced by new connection"; |
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130 }; |
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131 if not next(sessions) then |
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132 hosts[session.host].sessions[session.username] = { sessions = sessions }; |
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133 end |
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134 end |
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135 if increment and sessions[resource] then |
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136 local count = 1; |
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137 while sessions[resource.."#"..count] do |
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138 count = count + 1; |
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139 end |
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140 resource = resource.."#"..count; |
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141 end |
| 38 | 142 end |
| 143 end | |
| 144 | |
| 145 session.resource = resource; | |
| 146 session.full_jid = session.username .. '@' .. session.host .. '/' .. resource; | |
| 147 hosts[session.host].sessions[session.username].sessions[resource] = session; | |
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148 full_sessions[session.full_jid] = session; |
| 38 | 149 |
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150 session.roster = rm_load_roster(session.username, session.host); |
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151 |
| 38 | 152 return true; |
| 153 end | |
| 154 | |
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155 function streamopened(session, attr) |
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156 local send = session.send; |
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157 session.host = attr.to or error("Client failed to specify destination hostname"); |
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158 session.host = nameprep(session.host); |
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159 session.version = tonumber(attr.version) or 0; |
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160 session.streamid = m_random(1000000, 99999999); |
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161 (session.log or session)("debug", "Client sent opening <stream:stream> to %s", session.host); |
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162 |
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163 send("<?xml version='1.0'?>"); |
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164 send(format("<stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='%s' from='%s' version='1.0'>", session.streamid, session.host)); |
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165 |
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166 if not hosts[session.host] then |
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167 -- We don't serve this host... |
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168 session:close{ condition = "host-unknown", text = "This server does not serve "..tostring(session.host)}; |
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169 return; |
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170 end |
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171 |
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172 -- If session.secure is *false* (not nil) then it means we /were/ encrypting |
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173 -- since we now have a new stream header, session is secured |
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174 if session.secure == false then |
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175 session.secure = true; |
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176 end |
|
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177 |
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178 local features = st.stanza("stream:features"); |
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179 fire_event("stream-features", session, features); |
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180 |
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181 send(features); |
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182 |
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183 (session.log or log)("debug", "Sent reply <stream:stream> to client"); |
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184 session.notopen = nil; |
|
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185 end |
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186 |
|
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187 function streamclosed(session) |
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188 session.send("</stream:stream>"); |
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189 session.notopen = true; |
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190 end |
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191 |
|
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192 function send_to_available_resources(user, host, stanza) |
|
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193 local count = 0; |
|
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194 local to = stanza.attr.to; |
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195 stanza.attr.to = nil; |
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196 local h = hosts[host]; |
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197 if h and h.type == "local" then |
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198 local u = h.sessions[user]; |
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199 if u then |
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200 for k, session in pairs(u.sessions) do |
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201 if session.presence then |
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202 session.send(stanza); |
|
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203 count = count + 1; |
|
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204 end |
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205 end |
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206 end |
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207 end |
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208 stanza.attr.to = to; |
|
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209 return count; |
|
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210 end |
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211 |
|
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212 return _M; |
