Thu, 24 Jun 2010 04:16:09 +0500
util.sasl_cyrus: Return error strings using the new table mapping error codes to strings.
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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 | |
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9 | |
30 | 10 | |
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11 | local tonumber, tostring, setmetatable = tonumber, tostring, setmetatable; |
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Final fix for marking user offline when all resources are gone :)
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12 | local ipairs, pairs, print, next= ipairs, pairs, print, next; |
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13 | local format = import("string", "format"); |
38 | 14 | |
15 | local hosts = hosts; | |
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sessionmanager: Added reference to globals full_sessions and bare_sessions
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16 | local full_sessions = full_sessions; |
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17 | local bare_sessions = bare_sessions; |
38 | 18 | |
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Move stream opening handling from xmlhandlers to sessionmanager
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19 | local modulemanager = require "core.modulemanager"; |
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20 | local logger = require "util.logger"; |
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21 | local log = logger.init("sessionmanager"); |
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22 | local error = error; |
145 | 23 | local uuid_generate = require "util.uuid".generate; |
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Added some roster management functions
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24 | local rm_load_roster = require "core.rostermanager".load_roster; |
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Added options to limit the number of resources and for handling of resource conflicts
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25 | local config_get = require "core.configmanager".get; |
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Fixed: sessionmanager: Apply nameprep on hostname passed in stream tag (part of issue #57)
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26 | local nameprep = require "util.encodings".stringprep.nameprep; |
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sessionmanager: Added resource prepping, and invalid resource checking to the bind_resource function.
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27 | local resourceprep = require "util.encodings".stringprep.resourceprep; |
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sessionmanager: Moved nodeprep to sessionmanager.make_authenticated.
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28 | local nodeprep = require "util.encodings".stringprep.nodeprep; |
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29 | |
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30 | local fire_event = require "core.eventmanager".fire_event; |
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sessionmanager: Add c2s_timeout option for unauthenticated client connections
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31 | local add_task = require "util.timer".add_task; |
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32 | local gettime = require "socket".gettime; |
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33 | |
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34 | local st = require "util.stanza"; |
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35 | |
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36 | local c2s_timeout = config_get("*", "core", "c2s_timeout"); |
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37 | |
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38 | local newproxy = newproxy; |
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39 | local getmetatable = getmetatable; |
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40 | |
30 | 41 | module "sessionmanager" |
42 | ||
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43 | local open_sessions = 0; |
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44 | |
30 | 45 | function new_session(conn) |
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sessionmanager: Newly created sessions shouldn't have a priority. Fixes one of the stanza-gobbling bugs \o/
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46 | local session = { conn = conn, type = "c2s_unauthed", conntime = gettime() }; |
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47 | if true then |
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48 | session.trace = newproxy(true); |
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49 | getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; end; |
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50 | end |
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51 | open_sessions = open_sessions + 1; |
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52 | log("debug", "open sessions now: ".. open_sessions); |
30 | 53 | local w = conn.write; |
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54 | session.send = function (t) w(conn, tostring(t)); end |
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55 | session.ip = conn:ip(); |
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56 | local conn_name = "c2s"..tostring(conn):match("[a-f0-9]+$"); |
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57 | session.log = logger.init(conn_name); |
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58 | |
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59 | if c2s_timeout then |
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60 | add_task(c2s_timeout, function () |
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61 | if session.type == "c2s_unauthed" then |
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62 | session:close("connection-timeout"); |
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63 | end |
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64 | end); |
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65 | end |
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66 | |
30 | 67 | return session; |
68 | end | |
69 | ||
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70 | local resting_session = { -- Resting, not dead |
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71 | destroyed = true; |
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72 | type = "c2s_destroyed"; |
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73 | close = function (session) |
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74 | session.log("debug", "Attempt to close already-closed session"); |
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75 | end; |
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76 | }; resting_session.__index = resting_session; |
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77 | |
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78 | function retire_session(session) |
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79 | local log = session.log or log; |
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80 | for k in pairs(session) do |
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81 | if k ~= "trace" and k ~= "log" and k ~= "id" then |
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82 | session[k] = nil; |
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83 | end |
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84 | end |
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85 | |
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86 | function session.send(data) log("debug", "Discarding data sent to resting session: %s", tostring(data)); end |
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87 | function session.data(data) log("debug", "Discarding data received from resting session: %s", tostring(data)); end |
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88 | return setmetatable(session, resting_session); |
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89 | end |
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90 | |
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91 | function destroy_session(session, err) |
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92 | (session.log or log)("info", "Destroying session for %s (%s@%s)", session.full_jid or "(unknown)", session.username or "(unknown)", session.host or "(unknown)"); |
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93 | if session.destroyed then return; end |
331 | 94 | |
95 | -- Remove session/resource from user's session list | |
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96 | if session.full_jid then |
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97 | hosts[session.host].sessions[session.username].sessions[session.resource] = nil; |
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98 | full_sessions[session.full_jid] = nil; |
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99 | |
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100 | if not next(hosts[session.host].sessions[session.username].sessions) then |
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101 | log("debug", "All resources of %s are now offline", session.username); |
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102 | hosts[session.host].sessions[session.username] = nil; |
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103 | bare_sessions[session.username..'@'..session.host] = nil; |
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104 | end |
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105 | |
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106 | hosts[session.host].events.fire_event("resource-unbind", {session=session, error=err}); |
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107 | end |
331 | 108 | |
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109 | retire_session(session); |
38 | 110 | end |
111 | ||
112 | function make_authenticated(session, username) | |
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113 | username = nodeprep(username); |
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114 | if not username or #username == 0 then return nil, "Invalid username"; end |
38 | 115 | session.username = username; |
116 | if session.type == "c2s_unauthed" then | |
117 | session.type = "c2s"; | |
118 | end | |
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119 | session.log("info", "Authenticated as %s@%s", username or "(unknown)", session.host or "(unknown)"); |
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120 | return true; |
38 | 121 | end |
122 | ||
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123 | -- returns true, nil on success |
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124 | -- returns nil, err_type, err, err_message on failure |
38 | 125 | function bind_resource(session, resource) |
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126 | if not session.username then return nil, "auth", "not-authorized", "Cannot bind resource before authentication"; end |
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127 | if session.resource then return nil, "cancel", "already-bound", "Cannot bind multiple resources on a single connection"; end |
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128 | -- We don't support binding multiple resources |
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129 | |
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130 | resource = resourceprep(resource); |
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131 | resource = resource ~= "" and resource or uuid_generate(); |
38 | 132 | --FIXME: Randomly-generated resources must be unique per-user, and never conflict with existing |
133 | ||
134 | if not hosts[session.host].sessions[session.username] then | |
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135 | local sessions = { sessions = {} }; |
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136 | hosts[session.host].sessions[session.username] = sessions; |
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137 | bare_sessions[session.username..'@'..session.host] = sessions; |
38 | 138 | else |
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139 | local sessions = hosts[session.host].sessions[session.username].sessions; |
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140 | local limit = config_get(session.host, "core", "max_resources") or 10; |
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141 | if #sessions >= limit then |
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142 | return nil, "cancel", "resource-constraint", "Resource limit reached; only "..limit.." resources allowed"; |
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143 | end |
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144 | if sessions[resource] then |
38 | 145 | -- Resource conflict |
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146 | local policy = config_get(session.host, "core", "conflict_resolve"); |
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147 | local increment; |
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148 | if policy == "random" then |
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149 | resource = uuid_generate(); |
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150 | increment = true; |
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151 | elseif policy == "increment" then |
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152 | increment = true; -- TODO ping old resource |
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153 | elseif policy == "kick_new" then |
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154 | return nil, "cancel", "conflict", "Resource already exists"; |
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155 | else -- if policy == "kick_old" then |
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156 | sessions[resource]:close { |
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157 | condition = "conflict"; |
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158 | text = "Replaced by new connection"; |
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159 | }; |
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160 | if not next(sessions) then |
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161 | hosts[session.host].sessions[session.username] = { sessions = sessions }; |
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162 | bare_sessions[session.username.."@"..session.host] = hosts[session.host].sessions[session.username]; |
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163 | end |
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164 | end |
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165 | if increment and sessions[resource] then |
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166 | local count = 1; |
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167 | while sessions[resource.."#"..count] do |
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168 | count = count + 1; |
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169 | end |
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170 | resource = resource.."#"..count; |
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171 | end |
38 | 172 | end |
173 | end | |
174 | ||
175 | session.resource = resource; | |
176 | session.full_jid = session.username .. '@' .. session.host .. '/' .. resource; | |
177 | hosts[session.host].sessions[session.username].sessions[resource] = session; | |
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178 | full_sessions[session.full_jid] = session; |
38 | 179 | |
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180 | local err; |
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181 | session.roster, err = rm_load_roster(session.username, session.host); |
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182 | if err then |
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183 | full_sessions[session.full_jid] = nil; |
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184 | hosts[session.host].sessions[session.username].sessions[resource] = nil; |
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185 | session.full_jid = nil; |
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186 | session.resource = nil; |
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187 | if next(bare_sessions[session.username..'@'..session.host].sessions) == nil then |
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188 | bare_sessions[session.username..'@'..session.host] = nil; |
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189 | hosts[session.host].sessions[session.username] = nil; |
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190 | end |
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191 | return nil, "cancel", "internal-server-error", "Error loading roster"; |
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192 | end |
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193 | |
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194 | hosts[session.host].events.fire_event("resource-bind", {session=session}); |
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195 | |
38 | 196 | return true; |
197 | end | |
198 | ||
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199 | function streamopened(session, attr) |
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200 | local send = session.send; |
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201 | session.host = attr.to; |
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202 | if not session.host then |
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203 | session:close{ condition = "improper-addressing", |
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204 | text = "A 'to' attribute is required on stream headers" }; |
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205 | return; |
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206 | end |
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207 | session.host = nameprep(session.host); |
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208 | session.version = tonumber(attr.version) or 0; |
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209 | session.streamid = uuid_generate(); |
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210 | (session.log or session)("debug", "Client sent opening <stream:stream> to %s", session.host); |
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211 | |
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212 | if not hosts[session.host] then |
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213 | -- We don't serve this host... |
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214 | session:close{ condition = "host-unknown", text = "This server does not serve "..tostring(session.host)}; |
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215 | return; |
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216 | end |
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217 | |
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218 | send("<?xml version='1.0'?>"); |
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219 | send(format("<stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='%s' from='%s' version='1.0' xml:lang='en'>", session.streamid, session.host)); |
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220 | |
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221 | (session.log or log)("debug", "Sent reply <stream:stream> to client"); |
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222 | session.notopen = nil; |
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223 | |
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224 | -- If session.secure is *false* (not nil) then it means we /were/ encrypting |
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225 | -- since we now have a new stream header, session is secured |
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226 | if session.secure == false then |
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227 | session.secure = true; |
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228 | end |
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229 | |
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230 | local features = st.stanza("stream:features"); |
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231 | hosts[session.host].events.fire_event("stream-features", { origin = session, features = features }); |
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232 | fire_event("stream-features", session, features); |
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233 | |
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234 | send(features); |
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235 | |
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236 | end |
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237 | |
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238 | function streamclosed(session) |
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239 | session.log("debug", "Received </stream:stream>"); |
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240 | session:close(); |
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241 | end |
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242 | |
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243 | function send_to_available_resources(user, host, stanza) |
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244 | local jid = user.."@"..host; |
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245 | local count = 0; |
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246 | local user = bare_sessions[jid]; |
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247 | if user then |
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248 | for k, session in pairs(user.sessions) do |
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249 | if session.presence then |
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250 | session.send(stanza); |
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251 | count = count + 1; |
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252 | end |
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253 | end |
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254 | end |
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255 | return count; |
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256 | end |
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257 | |
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258 | function send_to_interested_resources(user, host, stanza) |
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259 | local jid = user.."@"..host; |
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260 | local count = 0; |
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261 | local user = bare_sessions[jid]; |
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262 | if user then |
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263 | for k, session in pairs(user.sessions) do |
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264 | if session.interested then |
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265 | session.send(stanza); |
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266 | count = count + 1; |
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267 | end |
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268 | end |
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269 | end |
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270 | return count; |
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271 | end |
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272 | |
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Matthew Wild <mwild1@gmail.com>
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273 | return _M; |