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core/sessionmanager.lua @ 9069:22e5f11c778a
sessionmanager, mod_s2s: Bring debug line for outgoing stanzas in line with that for incoming
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 24 Jul 2018 19:07:26 +0200 |
parent | 9066:af97ecd00734 |
child | 9070:21730a3642fe |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2010 Matthew Wild |
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3 -- Copyright (C) 2008-2010 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 -- luacheck: globals prosody.full_sessions prosody.bare_sessions |
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9 |
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10 local tostring, setmetatable = tostring, setmetatable; |
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11 local pairs, next= pairs, next; |
38 | 12 |
13 local hosts = hosts; | |
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14 local full_sessions = prosody.full_sessions; |
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15 local bare_sessions = prosody.bare_sessions; |
38 | 16 |
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17 local logger = require "util.logger"; |
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18 local log = logger.init("sessionmanager"); |
101
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Added some roster management functions
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19 local rm_load_roster = require "core.rostermanager".load_roster; |
429
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Added options to limit the number of resources and for handling of resource conflicts
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20 local config_get = require "core.configmanager".get; |
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21 local resourceprep = require "util.encodings".stringprep.resourceprep; |
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22 local nodeprep = require "util.encodings".stringprep.nodeprep; |
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23 local uuid_generate = require "util.uuid".generate; |
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24 |
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25 local initialize_filters = require "util.filters".initialize; |
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26 local gettime = require "socket".gettime; |
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27 |
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28 local _ENV = nil; |
30 | 29 |
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30 local function new_session(conn) |
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31 local session = { conn = conn, type = "c2s_unauthed", conntime = gettime() }; |
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32 local filter = initialize_filters(session); |
30 | 33 local w = conn.write; |
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34 session.send = function (t) |
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35 session.log("debug", "Sending[%s]: %s", session.type, t.top_tag and t:top_tag() or t:match("^[^>]*>?")); |
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36 if t.name then |
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37 t = filter("stanzas/out", t); |
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38 end |
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39 if t then |
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40 t = filter("bytes/out", tostring(t)); |
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41 if t then |
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42 local ret, err = w(conn, t); |
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43 if not ret then |
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44 session.log("debug", "Error writing to connection: %s", tostring(err)); |
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45 return false, err; |
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46 end |
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47 end |
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48 end |
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49 return true; |
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50 end |
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51 session.ip = conn:ip(); |
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52 local conn_name = "c2s"..tostring(session):match("[a-f0-9]+$"); |
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53 session.log = logger.init(conn_name); |
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54 |
30 | 55 return session; |
56 end | |
57 | |
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58 local resting_session = { -- Resting, not dead |
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59 destroyed = true; |
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60 type = "c2s_destroyed"; |
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61 close = function (session) |
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62 session.log("debug", "Attempt to close already-closed session"); |
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63 end; |
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64 filter = function (type, data) return data; end; --luacheck: ignore 212/type |
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65 }; resting_session.__index = resting_session; |
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66 |
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67 local function retire_session(session) |
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68 local log = session.log or log; --luacheck: ignore 431/log |
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69 for k in pairs(session) do |
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70 if k ~= "log" and k ~= "id" then |
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71 session[k] = nil; |
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72 end |
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73 end |
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74 |
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75 function session.send(data) log("debug", "Discarding data sent to resting session: %s", tostring(data)); return false; end |
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76 function session.data(data) log("debug", "Discarding data received from resting session: %s", tostring(data)); end |
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77 return setmetatable(session, resting_session); |
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78 end |
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79 |
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80 local function destroy_session(session, err) |
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81 (session.log or log)("debug", "Destroying session for %s (%s@%s)%s", |
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82 session.full_jid or "(unknown)", session.username or "(unknown)", |
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83 session.host or "(unknown)", err and (": "..err) or ""); |
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84 |
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85 if session.destroyed then return; end |
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86 |
331 | 87 -- Remove session/resource from user's session list |
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88 if session.full_jid then |
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89 local host_session = hosts[session.host]; |
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90 |
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91 -- Allow plugins to prevent session destruction |
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92 if host_session.events.fire_event("pre-resource-unbind", {session=session, error=err}) then |
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93 return; |
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94 end |
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95 |
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96 host_session.sessions[session.username].sessions[session.resource] = nil; |
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97 full_sessions[session.full_jid] = nil; |
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98 |
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99 if not next(host_session.sessions[session.username].sessions) then |
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100 log("debug", "All resources of %s are now offline", session.username); |
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101 host_session.sessions[session.username] = nil; |
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102 bare_sessions[session.username..'@'..session.host] = nil; |
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103 end |
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104 |
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105 host_session.events.fire_event("resource-unbind", {session=session, error=err}); |
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106 end |
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107 |
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108 retire_session(session); |
38 | 109 end |
110 | |
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111 local function make_authenticated(session, username) |
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112 username = nodeprep(username); |
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113 if not username or #username == 0 then return nil, "Invalid username"; end |
38 | 114 session.username = username; |
115 if session.type == "c2s_unauthed" then | |
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116 session.type = "c2s_unbound"; |
38 | 117 end |
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118 session.log("info", "Authenticated as %s@%s", username or "(unknown)", session.host or "(unknown)"); |
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119 return true; |
38 | 120 end |
121 | |
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122 -- returns true, nil on success |
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123 -- returns nil, err_type, err, err_message on failure |
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124 local function bind_resource(session, resource) |
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125 if not session.username then return nil, "auth", "not-authorized", "Cannot bind resource before authentication"; end |
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126 if session.resource then return nil, "cancel", "not-allowed", "Cannot bind multiple resources on a single connection"; end |
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127 -- We don't support binding multiple resources |
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128 |
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129 local event_payload = { session = session, resource = resource }; |
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130 if hosts[session.host].events.fire_event("pre-resource-bind", event_payload) == false then |
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131 local err = event_payload.error; |
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132 if err then return nil, err.type, err.condition, err.text; end |
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133 return nil, "cancel", "not-allowed"; |
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134 else |
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135 -- In case a plugin wants to poke at it |
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136 resource = event_payload.resource; |
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137 end |
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138 |
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139 resource = resourceprep(resource); |
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140 resource = resource ~= "" and resource or uuid_generate(); |
38 | 141 --FIXME: Randomly-generated resources must be unique per-user, and never conflict with existing |
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142 |
38 | 143 if not hosts[session.host].sessions[session.username] then |
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144 local sessions = { sessions = {} }; |
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145 hosts[session.host].sessions[session.username] = sessions; |
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146 bare_sessions[session.username..'@'..session.host] = sessions; |
38 | 147 else |
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148 local sessions = hosts[session.host].sessions[session.username].sessions; |
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149 if sessions[resource] then |
38 | 150 -- Resource conflict |
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151 local policy = config_get(session.host, "conflict_resolve"); |
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152 local increment; |
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153 if policy == "random" then |
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154 resource = uuid_generate(); |
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155 increment = true; |
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156 elseif policy == "increment" then |
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157 increment = true; -- TODO ping old resource |
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158 elseif policy == "kick_new" then |
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159 return nil, "cancel", "conflict", "Resource already exists"; |
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160 else -- if policy == "kick_old" then |
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161 sessions[resource]:close { |
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162 condition = "conflict"; |
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163 text = "Replaced by new connection"; |
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164 }; |
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165 if not next(sessions) then |
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166 hosts[session.host].sessions[session.username] = { sessions = sessions }; |
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167 bare_sessions[session.username.."@"..session.host] = hosts[session.host].sessions[session.username]; |
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168 end |
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169 end |
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170 if increment and sessions[resource] then |
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171 local count = 1; |
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172 while sessions[resource.."#"..count] do |
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173 count = count + 1; |
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174 end |
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175 resource = resource.."#"..count; |
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176 end |
38 | 177 end |
178 end | |
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179 |
38 | 180 session.resource = resource; |
181 session.full_jid = session.username .. '@' .. session.host .. '/' .. resource; | |
182 hosts[session.host].sessions[session.username].sessions[resource] = session; | |
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183 full_sessions[session.full_jid] = session; |
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184 if session.type == "c2s_unbound" then |
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185 session.type = "c2s"; |
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186 end |
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187 |
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188 local err; |
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189 session.roster, err = rm_load_roster(session.username, session.host); |
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190 if err then |
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191 -- FIXME: Why is all this rollback down here, instead of just doing the roster test up above? |
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192 full_sessions[session.full_jid] = nil; |
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193 hosts[session.host].sessions[session.username].sessions[resource] = nil; |
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194 session.full_jid = nil; |
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195 session.resource = nil; |
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196 if session.type == "c2s" then |
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197 session.type = "c2s_unbound"; |
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198 end |
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199 if next(bare_sessions[session.username..'@'..session.host].sessions) == nil then |
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200 bare_sessions[session.username..'@'..session.host] = nil; |
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201 hosts[session.host].sessions[session.username] = nil; |
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202 end |
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203 session.log("error", "Roster loading failed: %s", err); |
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204 return nil, "cancel", "internal-server-error", "Error loading roster"; |
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205 end |
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206 |
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207 hosts[session.host].events.fire_event("resource-bind", {session=session}); |
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208 |
38 | 209 return true; |
210 end | |
211 | |
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212 local function send_to_available_resources(username, host, stanza) |
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213 local jid = username.."@"..host; |
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214 local count = 0; |
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215 local user = bare_sessions[jid]; |
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216 if user then |
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217 for _, session in pairs(user.sessions) do |
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218 if session.presence then |
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219 session.send(stanza); |
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220 count = count + 1; |
175
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221 end |
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222 end |
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223 end |
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224 return count; |
175
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225 end |
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226 |
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227 local function send_to_interested_resources(username, host, stanza) |
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228 local jid = username.."@"..host; |
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229 local count = 0; |
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230 local user = bare_sessions[jid]; |
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231 if user then |
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232 for _, session in pairs(user.sessions) do |
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233 if session.interested then |
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234 session.send(stanza); |
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235 count = count + 1; |
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236 end |
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237 end |
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238 end |
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239 return count; |
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240 end |
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241 |
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242 return { |
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243 new_session = new_session; |
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244 retire_session = retire_session; |
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245 destroy_session = destroy_session; |
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246 make_authenticated = make_authenticated; |
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247 bind_resource = bind_resource; |
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248 send_to_available_resources = send_to_available_resources; |
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249 send_to_interested_resources = send_to_interested_resources; |
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250 }; |