prosody
36bf9ed87ae1
core/sessionmanager.lua

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core/sessionmanager.lua @ 7767:36bf9ed87ae1

util.dependencies: Add check and info about lua-bitops (for mod_websockets)
author Kim Alvefur <zash@zash.se>
date Mon, 05 Dec 2016 21:46:06 +0100
parent 7496:98c8d14be4ef
child 7497:22942eda53f8
child 7784:9f70d35a1602
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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 tostring, setmetatable = tostring, setmetatable;
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10 local pairs, next= pairs, next;
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11
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12 local hosts = hosts;
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13 local full_sessions = prosody.full_sessions;
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14 local bare_sessions = prosody.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 rm_load_roster = require "core.rostermanager".load_roster;
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19 local config_get = require "core.configmanager".get;
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20 local resourceprep = require "util.encodings".stringprep.resourceprep;
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21 local nodeprep = require "util.encodings".stringprep.nodeprep;
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22 local uuid_generate = require "util.uuid".generate;
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23
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24 local initialize_filters = require "util.filters".initialize;
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25 local gettime = require "socket".gettime;
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26
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27 local _ENV = nil;
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29 local function new_session(conn)
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30 local session = { conn = conn, type = "c2s_unauthed", conntime = gettime() };
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31 local filter = initialize_filters(session);
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32 local w = conn.write;
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33 session.send = function (t)
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34 if t.name then
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35 t = filter("stanzas/out", t);
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36 end
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37 if t then
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38 t = filter("bytes/out", tostring(t));
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39 if t then
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40 local ret, err = w(conn, t);
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41 if not ret then
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42 session.log("debug", "Error writing to connection: %s", tostring(err));
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43 return false, err;
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44 end
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45 end
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46 end
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47 return true;
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48 end
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49 session.ip = conn:ip();
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50 local conn_name = "c2s"..tostring(session):match("[a-f0-9]+$");
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51 session.log = logger.init(conn_name);
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52
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53 return session;
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54 end
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55
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56 local resting_session = { -- Resting, not dead
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57 destroyed = true;
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58 type = "c2s_destroyed";
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59 close = function (session)
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60 session.log("debug", "Attempt to close already-closed session");
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61 end;
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62 filter = function (type, data) return data; end; --luacheck: ignore 212/type
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63 }; resting_session.__index = resting_session;
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64
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65 local function retire_session(session)
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66 local log = session.log or log; --luacheck: ignore 431/log
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67 for k in pairs(session) do
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68 if k ~= "log" and k ~= "id" then
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69 session[k] = nil;
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70 end
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71 end
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72
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73 function session.send(data) log("debug", "Discarding data sent to resting session: %s", tostring(data)); return false; end
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74 function session.data(data) log("debug", "Discarding data received from resting session: %s", tostring(data)); end
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75 return setmetatable(session, resting_session);
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76 end
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77
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78 local function destroy_session(session, err)
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79 (session.log or log)("debug", "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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80 if session.destroyed then return; end
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81
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82 -- Remove session/resource from user's session list
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83 if session.full_jid then
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84 local host_session = hosts[session.host];
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85
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86 -- Allow plugins to prevent session destruction
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87 if host_session.events.fire_event("pre-resource-unbind", {session=session, error=err}) then
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88 return;
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89 end
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90
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91 host_session.sessions[session.username].sessions[session.resource] = nil;
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92 full_sessions[session.full_jid] = nil;
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93
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94 if not next(host_session.sessions[session.username].sessions) then
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95 log("debug", "All resources of %s are now offline", session.username);
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96 host_session.sessions[session.username] = nil;
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97 bare_sessions[session.username..'@'..session.host] = nil;
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98 end
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99
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100 host_session.events.fire_event("resource-unbind", {session=session, error=err});
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101 end
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102
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103 retire_session(session);
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104 end
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105
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106 local function make_authenticated(session, username)
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107 username = nodeprep(username);
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108 if not username or #username == 0 then return nil, "Invalid username"; end
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109 session.username = username;
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110 if session.type == "c2s_unauthed" then
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111 session.type = "c2s";
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112 end
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113 session.log("info", "Authenticated as %s@%s", username or "(unknown)", session.host or "(unknown)");
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114 return true;
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115 end
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116
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117 -- returns true, nil on success
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118 -- returns nil, err_type, err, err_message on failure
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119 local function bind_resource(session, resource)
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120 if not session.username then return nil, "auth", "not-authorized", "Cannot bind resource before authentication"; end
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121 if session.resource then return nil, "cancel", "not-allowed", "Cannot bind multiple resources on a single connection"; end
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122 -- We don't support binding multiple resources
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123
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124 local event_payload = { session = session, resource = resource };
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125 if hosts[session.host].events.fire_event("pre-resource-bind", event_payload) == false then
bae84401a02c sessionmanager: Add pre-resource-bind event that would let plugins have a say in resource binding
Kim Alvefur <zash@zash.se>
parents: 6551
diff changeset
126 local err = event_payload.error;
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parents: 6551
diff changeset
127 if err then return nil, err.type, err.condition, err.text; end
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Kim Alvefur <zash@zash.se>
parents: 6551
diff changeset
128 return nil, "cancel", "not-allowed";
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Kim Alvefur <zash@zash.se>
parents: 6551
diff changeset
129 else
bae84401a02c sessionmanager: Add pre-resource-bind event that would let plugins have a say in resource binding
Kim Alvefur <zash@zash.se>
parents: 6551
diff changeset
130 -- In case a plugin wants to poke at it
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parents: 6551
diff changeset
131 resource = event_payload.resource;
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parents: 6551
diff changeset
132 end
bae84401a02c sessionmanager: Add pre-resource-bind event that would let plugins have a say in resource binding
Kim Alvefur <zash@zash.se>
parents: 6551
diff changeset
133
2832
8c754c61c72e sessionmanager: Added resource prepping, and invalid resource checking to the bind_resource function.
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parents: 2816
diff changeset
134 resource = resourceprep(resource);
8c754c61c72e sessionmanager: Added resource prepping, and invalid resource checking to the bind_resource function.
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parents: 2816
diff changeset
135 resource = resource ~= "" and resource or uuid_generate();
38
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parents: 30
diff changeset
136 --FIXME: Randomly-generated resources must be unique per-user, and never conflict with existing
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parents: 5459
diff changeset
137
38
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parents: 30
diff changeset
138 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
Waqas Hussain <waqas20@gmail.com>
parents: 1223
diff changeset
139 local sessions = { sessions = {} };
35fa588e43a6 sessionmanager: Add/remove sessions from full_sessions and bare_sessions when binding/unbinding sessions
Waqas Hussain <waqas20@gmail.com>
parents: 1223
diff changeset
140 hosts[session.host].sessions[session.username] = sessions;
1290
c253905a8a55 sessionmanager: It's username@host, not host@username :)
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parents: 1226
diff changeset
141 bare_sessions[session.username..'@'..session.host] = sessions;
38
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
142 else
429
b1d86f89fa27 Added options to limit the number of resources and for handling of resource conflicts
Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
143 local sessions = hosts[session.host].sessions[session.username].sessions;
b1d86f89fa27 Added options to limit the number of resources and for handling of resource conflicts
Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
144 if sessions[resource] then
38
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
145 -- Resource conflict
5377
898454038524 core.*: Complete removal of all traces of the "core" section and section-related code.
Kim Alvefur <zash@zash.se>
parents: 5306
diff changeset
146 local policy = config_get(session.host, "conflict_resolve");
429
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parents: 357
diff changeset
147 local increment;
b1d86f89fa27 Added options to limit the number of resources and for handling of resource conflicts
Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
148 if policy == "random" then
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Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
149 resource = uuid_generate();
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Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
150 increment = true;
b1d86f89fa27 Added options to limit the number of resources and for handling of resource conflicts
Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
151 elseif policy == "increment" then
b1d86f89fa27 Added options to limit the number of resources and for handling of resource conflicts
Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
152 increment = true; -- TODO ping old resource
b1d86f89fa27 Added options to limit the number of resources and for handling of resource conflicts
Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
153 elseif policy == "kick_new" then
b1d86f89fa27 Added options to limit the number of resources and for handling of resource conflicts
Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
154 return nil, "cancel", "conflict", "Resource already exists";
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Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
155 else -- if policy == "kick_old" then
791
a4be1d80775c Fixed: kick_old resource conflict resolution policy could fail with a backtrace
Waqas Hussain <waqas20@gmail.com>
parents: 760
diff changeset
156 sessions[resource]:close {
429
b1d86f89fa27 Added options to limit the number of resources and for handling of resource conflicts
Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
157 condition = "conflict";
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parents: 357
diff changeset
158 text = "Replaced by new connection";
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parents: 357
diff changeset
159 };
791
a4be1d80775c Fixed: kick_old resource conflict resolution policy could fail with a backtrace
Waqas Hussain <waqas20@gmail.com>
parents: 760
diff changeset
160 if not next(sessions) then
a4be1d80775c Fixed: kick_old resource conflict resolution policy could fail with a backtrace
Waqas Hussain <waqas20@gmail.com>
parents: 760
diff changeset
161 hosts[session.host].sessions[session.username] = { sessions = sessions };
1471
8b3753b080fc sessionmanager: Reset bare_sessions[user] after resource conflict resolution. Fixes the other stanza gobbling bug \o/
Matthew Wild <mwild1@gmail.com>
parents: 1469
diff changeset
162 bare_sessions[session.username.."@"..session.host] = hosts[session.host].sessions[session.username];
791
a4be1d80775c Fixed: kick_old resource conflict resolution policy could fail with a backtrace
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parents: 760
diff changeset
163 end
429
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Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
164 end
b1d86f89fa27 Added options to limit the number of resources and for handling of resource conflicts
Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
165 if increment and sessions[resource] then
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Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
166 local count = 1;
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Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
167 while sessions[resource.."#"..count] do
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Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
168 count = count + 1;
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Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
169 end
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Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
170 resource = resource.."#"..count;
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Waqas Hussain <waqas20@gmail.com>
parents: 357
diff changeset
171 end
38
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
172 end
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
173 end
5776
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parents: 5459
diff changeset
174
38
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parents: 30
diff changeset
175 session.resource = resource;
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
176 session.full_jid = session.username .. '@' .. session.host .. '/' .. resource;
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
177 hosts[session.host].sessions[session.username].sessions[resource] = session;
1224
35fa588e43a6 sessionmanager: Add/remove sessions from full_sessions and bare_sessions when binding/unbinding sessions
Waqas Hussain <waqas20@gmail.com>
parents: 1223
diff changeset
178 full_sessions[session.full_jid] = session;
5776
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parents: 5459
diff changeset
179
3088
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
Waqas Hussain <waqas20@gmail.com>
parents: 2925
diff changeset
180 local err;
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
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parents: 2925
diff changeset
181 session.roster, err = rm_load_roster(session.username, session.host);
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Waqas Hussain <waqas20@gmail.com>
parents: 2925
diff changeset
182 if err then
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
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parents: 2925
diff changeset
183 full_sessions[session.full_jid] = nil;
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
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parents: 2925
diff changeset
184 hosts[session.host].sessions[session.username].sessions[resource] = nil;
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
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parents: 2925
diff changeset
185 session.full_jid = nil;
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
Waqas Hussain <waqas20@gmail.com>
parents: 2925
diff changeset
186 session.resource = nil;
3091
d6a059af2077 rostermanager: Correctly clear the bare_sessions table on roster load errors during bind.
Waqas Hussain <waqas20@gmail.com>
parents: 3089
diff changeset
187 if next(bare_sessions[session.username..'@'..session.host].sessions) == nil then
3088
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
Waqas Hussain <waqas20@gmail.com>
parents: 2925
diff changeset
188 bare_sessions[session.username..'@'..session.host] = nil;
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
Waqas Hussain <waqas20@gmail.com>
parents: 2925
diff changeset
189 hosts[session.host].sessions[session.username] = nil;
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
Waqas Hussain <waqas20@gmail.com>
parents: 2925
diff changeset
190 end
5211
80635a6cb126 sessionmanager: Log the actual error message when roster loading fails.
Waqas Hussain <waqas20@gmail.com>
parents: 4995
diff changeset
191 session.log("error", "Roster loading failed: %s", err);
3088
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
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parents: 2925
diff changeset
192 return nil, "cancel", "internal-server-error", "Error loading roster";
a233aa051125 sessionmanager: If roster loading fails during resource bind, kick the user with an internal-server-error.
Waqas Hussain <waqas20@gmail.com>
parents: 2925
diff changeset
193 end
5776
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5459
diff changeset
194
1478
da11f2652ae9 sessionmanager: Replace raw session by an event data table for resource bind/unbind events, allowing extra data
Waqas Hussain <waqas20@gmail.com>
parents: 1471
diff changeset
195 hosts[session.host].events.fire_event("resource-bind", {session=session});
5776
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5459
diff changeset
196
38
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parents: 30
diff changeset
197 return true;
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
198 end
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
199
6779
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
200 local function send_to_available_resources(username, host, stanza)
6619
78d1706982b2 sessionmanager: Rename parameter to avoid varible name conflict
Matthew Wild <mwild1@gmail.com>
parents: 6602
diff changeset
201 local jid = username.."@"..host;
176
e5cd2a03891d Outbound presence subscription
Waqas Hussain <waqas20@gmail.com>
parents: 175
diff changeset
202 local count = 0;
2140
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
203 local user = bare_sessions[jid];
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
204 if user then
6676
a536978e0f01 sessionmanager: Rename unused loop variables to '_' [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 6663
diff changeset
205 for _, session in pairs(user.sessions) do
2140
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
206 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
207 session.send(stanza);
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
208 count = count + 1;
175
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
209 end
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
210 end
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
211 end
176
e5cd2a03891d Outbound presence subscription
Waqas Hussain <waqas20@gmail.com>
parents: 175
diff changeset
212 return count;
175
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
213 end
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
214
6779
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Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
215 local function send_to_interested_resources(username, host, stanza)
6677
1089f45c5e67 sessionmanager: Rename argument to avoid name clash with local variable [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 6676
diff changeset
216 local jid = username.."@"..host;
2141
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
217 local count = 0;
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
218 local user = bare_sessions[jid];
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
219 if user then
6676
a536978e0f01 sessionmanager: Rename unused loop variables to '_' [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 6663
diff changeset
220 for _, session in pairs(user.sessions) do
2141
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
221 if session.interested then
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
222 session.send(stanza);
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
223 count = count + 1;
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
224 end
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
225 end
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
226 end
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
227 return count;
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
228 end
f544729f9228 sessionmanager: Added function send_to_interested_resources().
Waqas Hussain <waqas20@gmail.com>
parents: 2140
diff changeset
229
6779
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Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
230 return {
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
231 new_session = new_session;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
232 retire_session = retire_session;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
233 destroy_session = destroy_session;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
234 make_authenticated = make_authenticated;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
235 bind_resource = bind_resource;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
236 send_to_available_resources = send_to_available_resources;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
237 send_to_interested_resources = send_to_interested_resources;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6677
diff changeset
238 };