prosody
e6e5c76ff009
core/sessionmanager.lua

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core/sessionmanager.lua @ 4548:e6e5c76ff009

sessionmanager, mod_c2s: Move timeout logic to mod_c2s
author Matthew Wild <mwild1@gmail.com>
date Mon, 23 Jan 2012 00:56:57 +0000
parent 4543:db27a4c18b6a
child 4552:414d857ee125
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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 --
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5 -- This project is MIT/X11 licensed. Please see the
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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 local tonumber, tostring, setmetatable = tonumber, tostring, setmetatable;
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10 local ipairs, pairs, print, next= ipairs, pairs, print, next;
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11
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12 local hosts = hosts;
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13 local full_sessions = full_sessions;
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14 local bare_sessions = bare_sessions;
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15
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16 local logger = require "util.logger";
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17 local log = logger.init("sessionmanager");
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18 local error = error;
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19 local rm_load_roster = require "core.rostermanager".load_roster;
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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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24 local initialize_filters = require "util.filters".initialize;
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25 local fire_event = prosody.events.fire_event;
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26 local add_task = require "util.timer".add_task;
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27 local gettime = require "socket".gettime;
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29 local st = require "util.stanza";
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31 local newproxy = newproxy;
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32 local getmetatable = getmetatable;
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33
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34 module "sessionmanager"
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36 local open_sessions = 0;
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38 function new_session(conn)
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39 local session = { conn = conn, type = "c2s_unauthed", conntime = gettime() };
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40 if true then
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41 session.trace = newproxy(true);
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42 getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; end;
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43 end
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44 open_sessions = open_sessions + 1;
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45 log("debug", "open sessions now: ".. open_sessions);
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47 local filter = initialize_filters(session);
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48 local w = conn.write;
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49 session.send = function (t)
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50 if t.name then
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51 t = filter("stanzas/out", t);
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52 end
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53 if t then
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54 t = filter("bytes/out", tostring(t));
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55 if t then
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56 return w(conn, t);
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57 end
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58 end
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59 end
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60 session.ip = conn:ip();
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61 local conn_name = "c2s"..tostring(conn):match("[a-f0-9]+$");
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62 session.log = logger.init(conn_name);
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63
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64 return session;
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65 end
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66
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67 local resting_session = { -- Resting, not dead
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68 destroyed = true;
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69 type = "c2s_destroyed";
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70 close = function (session)
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71 session.log("debug", "Attempt to close already-closed session");
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72 end;
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73 filter = function (type, data) return data; end;
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74 }; resting_session.__index = resting_session;
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76 function retire_session(session)
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77 local log = session.log or log;
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78 for k in pairs(session) do
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79 if k ~= "trace" and k ~= "log" and k ~= "id" then
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80 session[k] = nil;
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81 end
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82 end
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84 function session.send(data) log("debug", "Discarding data sent to resting session: %s", tostring(data)); end
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85 function session.data(data) log("debug", "Discarding data received from resting session: %s", tostring(data)); end
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86 return setmetatable(session, resting_session);
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87 end
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88
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89 function destroy_session(session, err)
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90 (session.log or log)("info", "Destroying session for %s (%s@%s)%s", session.full_jid or "(unknown)", session.username or "(unknown)", session.host or "(unknown)", err and (": "..err) or "");
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91 if session.destroyed then return; end
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92
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93 -- Remove session/resource from user's session list
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94 if session.full_jid then
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95 local host_session = hosts[session.host];
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97 -- Allow plugins to prevent session destruction
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98 if host_session.events.fire_event("pre-resource-unbind", {session=session, error=err}) then
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99 return;
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100 end
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101
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102 host_session.sessions[session.username].sessions[session.resource] = nil;
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103 full_sessions[session.full_jid] = nil;
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104
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105 if not next(host_session.sessions[session.username].sessions) then
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106 log("debug", "All resources of %s are now offline", session.username);
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107 host_session.sessions[session.username] = nil;
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108 bare_sessions[session.username..'@'..session.host] = nil;
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109 end
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110
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111 host_session.events.fire_event("resource-unbind", {session=session, error=err});
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112 end
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113
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114 retire_session(session);
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115 end
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116
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117 function make_authenticated(session, username)
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118 username = nodeprep(username);
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119 if not username or #username == 0 then return nil, "Invalid username"; end
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120 session.username = username;
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121 if session.type == "c2s_unauthed" then
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122 session.type = "c2s";
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123 end
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124 session.log("info", "Authenticated as %s@%s", username or "(unknown)", session.host or "(unknown)");
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125 return true;
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126 end
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127
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128 -- returns true, nil on success
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129 -- returns nil, err_type, err, err_message on failure
38
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130 function bind_resource(session, resource)
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131 if not session.username then return nil, "auth", "not-authorized", "Cannot bind resource before authentication"; end
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132 if session.resource then return nil, "cancel", "already-bound", "Cannot bind multiple resources on a single connection"; end
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133 -- We don't support binding multiple resources
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134
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135 resource = resourceprep(resource);
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136 resource = resource ~= "" and resource or uuid_generate();
38
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parents: 30
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137 --FIXME: Randomly-generated resources must be unique per-user, and never conflict with existing
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parents: 30
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138
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parents: 30
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139 if not hosts[session.host].sessions[session.username] then
1224
35fa588e43a6 sessionmanager: Add/remove sessions from full_sessions and bare_sessions when binding/unbinding sessions
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140 local sessions = { sessions = {} };
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parents: 1223
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141 hosts[session.host].sessions[session.username] = sessions;
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c253905a8a55 sessionmanager: It's username@host, not host@username :)
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142 bare_sessions[session.username..'@'..session.host] = sessions;
38
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parents: 30
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143 else
429
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144 local sessions = hosts[session.host].sessions[session.username].sessions;
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parents: 357
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145 local limit = config_get(session.host, "core", "max_resources") or 10;
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parents: 357
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146 if #sessions >= limit then
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69fb1cb6b551 sessionmanager: Change error for reaching resource limit from 'conflict' to 'resource-constraint' during session bind.
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parents: 3088
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147 return nil, "cancel", "resource-constraint", "Resource limit reached; only "..limit.." resources allowed";
429
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148 end
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149 if sessions[resource] then
38
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parents: 30
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150 -- Resource conflict
429
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151 local policy = config_get(session.host, "core", "conflict_resolve");
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152 local increment;
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parents: 357
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153 if policy == "random" then
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parents: 357
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154 resource = uuid_generate();
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parents: 357
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155 increment = true;
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parents: 357
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156 elseif policy == "increment" then
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parents: 357
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157 increment = true; -- TODO ping old resource
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parents: 357
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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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parents: 357
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160 else -- if policy == "kick_old" then
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a4be1d80775c Fixed: kick_old resource conflict resolution policy could fail with a backtrace
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parents: 760
diff changeset
161 sessions[resource]:close {
429
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162 condition = "conflict";
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parents: 357
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163 text = "Replaced by new connection";
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parents: 357
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164 };
791
a4be1d80775c Fixed: kick_old resource conflict resolution policy could fail with a backtrace
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parents: 760
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165 if not next(sessions) then
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parents: 760
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166 hosts[session.host].sessions[session.username] = { sessions = sessions };
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8b3753b080fc sessionmanager: Reset bare_sessions[user] after resource conflict resolution. Fixes the other stanza gobbling bug \o/
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parents: 1469
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167 bare_sessions[session.username.."@"..session.host] = hosts[session.host].sessions[session.username];
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parents: 760
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168 end
429
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169 end
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parents: 357
diff changeset
170 if increment and sessions[resource] then
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parents: 357
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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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parents: 357
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174 end
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parents: 357
diff changeset
175 resource = resource.."#"..count;
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parents: 357
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176 end
38
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parents: 30
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177 end
Matthew Wild <mwild1@gmail.com>
parents: 30
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178 end
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parents: 30
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179
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180 session.resource = resource;
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181 session.full_jid = session.username .. '@' .. session.host .. '/' .. resource;
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182 hosts[session.host].sessions[session.username].sessions[resource] = session;
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183 full_sessions[session.full_jid] = session;
38
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184
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185 local err;
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186 session.roster, err = rm_load_roster(session.username, session.host);
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187 if err then
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188 full_sessions[session.full_jid] = nil;
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189 hosts[session.host].sessions[session.username].sessions[resource] = nil;
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190 session.full_jid = nil;
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diff changeset
191 session.resource = nil;
3091
d6a059af2077 rostermanager: Correctly clear the bare_sessions table on roster load errors during bind.
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parents: 3089
diff changeset
192 if next(bare_sessions[session.username..'@'..session.host].sessions) == nil then
3088
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193 bare_sessions[session.username..'@'..session.host] = nil;
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194 hosts[session.host].sessions[session.username] = nil;
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195 end
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196 return nil, "cancel", "internal-server-error", "Error loading roster";
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197 end
77
531b981f2d17 Load roster on resource bind
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parents: 57
diff changeset
198
1478
da11f2652ae9 sessionmanager: Replace raw session by an event data table for resource bind/unbind events, allowing extra data
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parents: 1471
diff changeset
199 hosts[session.host].events.fire_event("resource-bind", {session=session});
1379
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parents: 1301
diff changeset
200
38
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diff changeset
201 return true;
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202 end
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
203
175
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parents: 156
diff changeset
204 function send_to_available_resources(user, host, stanza)
2140
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parents: 1929
diff changeset
205 local jid = user.."@"..host;
176
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parents: 175
diff changeset
206 local count = 0;
2140
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parents: 1929
diff changeset
207 local user = bare_sessions[jid];
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parents: 1929
diff changeset
208 if user then
94b7ba39787d sessionmanager: Fixed and cleaned function send_to_available_resources(). The 'to' attribute for presence subscription stanzas is now preserved.
Waqas Hussain <waqas20@gmail.com>
parents: 1929
diff changeset
209 for k, session in pairs(user.sessions) do
94b7ba39787d sessionmanager: Fixed and cleaned function send_to_available_resources(). The 'to' attribute for presence subscription stanzas is now preserved.
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parents: 1929
diff changeset
210 if session.presence then
94b7ba39787d sessionmanager: Fixed and cleaned function send_to_available_resources(). The 'to' attribute for presence subscription stanzas is now preserved.
Waqas Hussain <waqas20@gmail.com>
parents: 1929
diff changeset
211 session.send(stanza);
94b7ba39787d sessionmanager: Fixed and cleaned function send_to_available_resources(). The 'to' attribute for presence subscription stanzas is now preserved.
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parents: 1929
diff changeset
212 count = count + 1;
175
5f71d290bb44 Routing code reorganization
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parents: 156
diff changeset
213 end
5f71d290bb44 Routing code reorganization
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parents: 156
diff changeset
214 end
5f71d290bb44 Routing code reorganization
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parents: 156
diff changeset
215 end
176
e5cd2a03891d Outbound presence subscription
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parents: 175
diff changeset
216 return count;
175
5f71d290bb44 Routing code reorganization
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parents: 156
diff changeset
217 end
5f71d290bb44 Routing code reorganization
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parents: 156
diff changeset
218
2141
f544729f9228 sessionmanager: Added function send_to_interested_resources().
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diff changeset
219 function send_to_interested_resources(user, host, stanza)
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diff changeset
220 local jid = user.."@"..host;
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diff changeset
221 local count = 0;
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parents: 2140
diff changeset
222 local user = bare_sessions[jid];
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parents: 2140
diff changeset
223 if user then
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parents: 2140
diff changeset
224 for k, session in pairs(user.sessions) do
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parents: 2140
diff changeset
225 if session.interested then
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parents: 2140
diff changeset
226 session.send(stanza);
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diff changeset
227 count = count + 1;
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228 end
f544729f9228 sessionmanager: Added function send_to_interested_resources().
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parents: 2140
diff changeset
229 end
f544729f9228 sessionmanager: Added function send_to_interested_resources().
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parents: 2140
diff changeset
230 end
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parents: 2140
diff changeset
231 return count;
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diff changeset
232 end
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parents: 2140
diff changeset
233
614
335f2921ae0c Newline at end of file for sessionmanager
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parents: 597
diff changeset
234 return _M;