prosody
0c62bed9d338
core/sessionmanager.lua

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core/sessionmanager.lua @ 2006:0c62bed9d338

MUC: Added support for reason messages in role and affiliation changes (e.g., reason for kick, etc).
author Waqas Hussain <waqas20@gmail.com>
date Sun, 18 Oct 2009 15:53:08 +0500
parent 1929:b8e6764ffefd
child 2103:0e0bc74c64a0
child 2140:94b7ba39787d
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 Waqas Hussain
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4 --
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b1885732e979 GPL->MIT!
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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
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10
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11 local tonumber, tostring = tonumber, tostring;
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12 local ipairs, pairs, print, next= ipairs, pairs, print, next;
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13 local collectgarbage = collectgarbage;
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14 local format = import("string", "format");
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15
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16 local hosts = hosts;
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17 local full_sessions = full_sessions;
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18 local bare_sessions = bare_sessions;
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19
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20 local modulemanager = require "core.modulemanager";
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21 local logger = require "util.logger";
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22 local log = logger.init("sessionmanager");
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23 local error = error;
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24 local uuid_generate = require "util.uuid".generate;
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25 local rm_load_roster = require "core.rostermanager".load_roster;
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26 local config_get = require "core.configmanager".get;
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27 local nameprep = require "util.encodings".stringprep.nameprep;
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29 local fire_event = require "core.eventmanager".fire_event;
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30 local add_task = require "util.timer".add_task;
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31 local gettime = require "socket".gettime;
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32
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33 local st = require "util.stanza";
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34
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35 local c2s_timeout = config_get("*", "core", "c2s_timeout");
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37 local newproxy = newproxy;
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38 local getmetatable = getmetatable;
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40 module "sessionmanager"
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42 local open_sessions = 0;
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44 function new_session(conn)
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45 local session = { conn = conn, type = "c2s_unauthed", conntime = gettime() };
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46 if true then
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47 session.trace = newproxy(true);
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48 getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; end;
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49 end
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50 open_sessions = open_sessions + 1;
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51 log("debug", "open sessions now: ".. open_sessions);
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52 local w = conn.write;
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53 session.send = function (t) w(tostring(t)); end
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54 session.ip = conn.ip();
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55 local conn_name = "c2s"..tostring(conn):match("[a-f0-9]+$");
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56 session.log = logger.init(conn_name);
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58 if c2s_timeout then
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59 add_task(c2s_timeout, function ()
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60 if session.type == "c2s_unauthed" then
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61 session:close("connection-timeout");
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62 end
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63 end);
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64 end
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66 return session;
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67 end
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69 function destroy_session(session, err)
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70 (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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72 -- Remove session/resource from user's session list
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73 if session.full_jid then
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74 hosts[session.host].events.fire_event("resource-unbind", {session=session, error=err});
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75
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76 hosts[session.host].sessions[session.username].sessions[session.resource] = nil;
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77 full_sessions[session.full_jid] = nil;
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79 if not next(hosts[session.host].sessions[session.username].sessions) then
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80 log("debug", "All resources of %s are now offline", session.username);
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81 hosts[session.host].sessions[session.username] = nil;
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82 bare_sessions[session.username..'@'..session.host] = nil;
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83 end
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84 end
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85
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86 for k in pairs(session) do
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87 if k ~= "trace" then
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88 session[k] = nil;
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89 end
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90 end
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91 end
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92
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93 function make_authenticated(session, username)
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94 session.username = username;
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95 if session.type == "c2s_unauthed" then
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96 session.type = "c2s";
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97 end
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98 session.log("info", "Authenticated as %s@%s", username or "(unknown)", session.host or "(unknown)");
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99 return true;
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100 end
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101
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102 -- returns true, nil on success
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103 -- returns nil, err_type, err, err_message on failure
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104 function bind_resource(session, resource)
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105 if not session.username then return nil, "auth", "not-authorized", "Cannot bind resource before authentication"; end
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106 if session.resource then return nil, "cancel", "already-bound", "Cannot bind multiple resources on a single connection"; end
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107 -- We don't support binding multiple resources
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108
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109 resource = resource or uuid_generate();
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110 --FIXME: Randomly-generated resources must be unique per-user, and never conflict with existing
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111
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112 if not hosts[session.host].sessions[session.username] then
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113 local sessions = { sessions = {} };
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114 hosts[session.host].sessions[session.username] = sessions;
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115 bare_sessions[session.username..'@'..session.host] = sessions;
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116 else
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117 local sessions = hosts[session.host].sessions[session.username].sessions;
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118 local limit = config_get(session.host, "core", "max_resources") or 10;
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119 if #sessions >= limit then
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120 return nil, "cancel", "conflict", "Resource limit reached; only "..limit.." resources allowed";
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121 end
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122 if sessions[resource] then
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123 -- Resource conflict
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124 local policy = config_get(session.host, "core", "conflict_resolve");
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125 local increment;
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126 if policy == "random" then
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127 resource = uuid_generate();
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128 increment = true;
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129 elseif policy == "increment" then
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130 increment = true; -- TODO ping old resource
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131 elseif policy == "kick_new" then
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132 return nil, "cancel", "conflict", "Resource already exists";
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133 else -- if policy == "kick_old" then
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134 sessions[resource]:close {
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135 condition = "conflict";
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136 text = "Replaced by new connection";
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parents: 357
diff changeset
137 };
791
a4be1d80775c Fixed: kick_old resource conflict resolution policy could fail with a backtrace
Waqas Hussain <waqas20@gmail.com>
parents: 760
diff changeset
138 if not next(sessions) then
a4be1d80775c Fixed: kick_old resource conflict resolution policy could fail with a backtrace
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parents: 760
diff changeset
139 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
140 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
141 end
429
b1d86f89fa27 Added options to limit the number of resources and for handling of resource conflicts
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parents: 357
diff changeset
142 end
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parents: 357
diff changeset
143 if increment and sessions[resource] then
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parents: 357
diff changeset
144 local count = 1;
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parents: 357
diff changeset
145 while sessions[resource.."#"..count] do
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parents: 357
diff changeset
146 count = count + 1;
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parents: 357
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147 end
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parents: 357
diff changeset
148 resource = resource.."#"..count;
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parents: 357
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149 end
38
Matthew Wild <mwild1@gmail.com>
parents: 30
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150 end
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
151 end
Matthew Wild <mwild1@gmail.com>
parents: 30
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152
Matthew Wild <mwild1@gmail.com>
parents: 30
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153 session.resource = resource;
Matthew Wild <mwild1@gmail.com>
parents: 30
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154 session.full_jid = session.username .. '@' .. session.host .. '/' .. resource;
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
155 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
156 full_sessions[session.full_jid] = session;
38
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
157
101
c690fa382743 Added some roster management functions
Waqas Hussain <waqas20@gmail.com>
parents: 77
diff changeset
158 session.roster = rm_load_roster(session.username, session.host);
77
531b981f2d17 Load roster on resource bind
Waqas Hussain <waqas20@gmail.com>
parents: 57
diff changeset
159
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
160 hosts[session.host].events.fire_event("resource-bind", {session=session});
1379
03d8a930053f sessionmanager: Fire event on resource bind
Matthew Wild <mwild1@gmail.com>
parents: 1301
diff changeset
161
38
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
162 return true;
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
163 end
Matthew Wild <mwild1@gmail.com>
parents: 30
diff changeset
164
40
2c0147bbd81a Move stream opening handling from xmlhandlers to sessionmanager
Matthew Wild <mwild1@gmail.com>
parents: 38
diff changeset
165 function streamopened(session, attr)
970
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
166 local send = session.send;
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
167 session.host = attr.to or error("Client failed to specify destination hostname");
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parents: 959
diff changeset
168 session.host = nameprep(session.host);
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parents: 959
diff changeset
169 session.version = tonumber(attr.version) or 0;
1873
3b770710a1ee sessionmanager: Use UUID for stream ids to clients, no math.random anymore :)
Matthew Wild <mwild1@gmail.com>
parents: 1872
diff changeset
170 session.streamid = uuid_generate();
970
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
171 (session.log or session)("debug", "Client sent opening <stream:stream> to %s", session.host);
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
172
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
173 if not hosts[session.host] then
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
174 -- We don't serve this host...
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
175 session:close{ condition = "host-unknown", text = "This server does not serve "..tostring(session.host)};
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
176 return;
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
177 end
1929
b8e6764ffefd sessionmanager: Mark client streams as opened sooner to avoid wrapping errors in unnecessary stream tags
Paul Aurich <paul@darkrain42.org>
parents: 1873
diff changeset
178
b8e6764ffefd sessionmanager: Mark client streams as opened sooner to avoid wrapping errors in unnecessary stream tags
Paul Aurich <paul@darkrain42.org>
parents: 1873
diff changeset
179 send("<?xml version='1.0'?>");
b8e6764ffefd sessionmanager: Mark client streams as opened sooner to avoid wrapping errors in unnecessary stream tags
Paul Aurich <paul@darkrain42.org>
parents: 1873
diff changeset
180 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));
b8e6764ffefd sessionmanager: Mark client streams as opened sooner to avoid wrapping errors in unnecessary stream tags
Paul Aurich <paul@darkrain42.org>
parents: 1873
diff changeset
181
b8e6764ffefd sessionmanager: Mark client streams as opened sooner to avoid wrapping errors in unnecessary stream tags
Paul Aurich <paul@darkrain42.org>
parents: 1873
diff changeset
182 (session.log or log)("debug", "Sent reply <stream:stream> to client");
b8e6764ffefd sessionmanager: Mark client streams as opened sooner to avoid wrapping errors in unnecessary stream tags
Paul Aurich <paul@darkrain42.org>
parents: 1873
diff changeset
183 session.notopen = nil;
b8e6764ffefd sessionmanager: Mark client streams as opened sooner to avoid wrapping errors in unnecessary stream tags
Paul Aurich <paul@darkrain42.org>
parents: 1873
diff changeset
184
1213
de66fa750daf sessionmanager, mod_tls: Mark a session as secure when TLS is active
Matthew Wild <mwild1@gmail.com>
parents: 1076
diff changeset
185 -- If session.secure is *false* (not nil) then it means we /were/ encrypting
de66fa750daf sessionmanager, mod_tls: Mark a session as secure when TLS is active
Matthew Wild <mwild1@gmail.com>
parents: 1076
diff changeset
186 -- since we now have a new stream header, session is secured
de66fa750daf sessionmanager, mod_tls: Mark a session as secure when TLS is active
Matthew Wild <mwild1@gmail.com>
parents: 1076
diff changeset
187 if session.secure == false then
de66fa750daf sessionmanager, mod_tls: Mark a session as secure when TLS is active
Matthew Wild <mwild1@gmail.com>
parents: 1076
diff changeset
188 session.secure = true;
de66fa750daf sessionmanager, mod_tls: Mark a session as secure when TLS is active
Matthew Wild <mwild1@gmail.com>
parents: 1076
diff changeset
189 end
1929
b8e6764ffefd sessionmanager: Mark client streams as opened sooner to avoid wrapping errors in unnecessary stream tags
Paul Aurich <paul@darkrain42.org>
parents: 1873
diff changeset
190
970
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
191 local features = st.stanza("stream:features");
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
192 fire_event("stream-features", session, features);
1929
b8e6764ffefd sessionmanager: Mark client streams as opened sooner to avoid wrapping errors in unnecessary stream tags
Paul Aurich <paul@darkrain42.org>
parents: 1873
diff changeset
193
970
5516f9e66482 sessionmanager, componentmanager: Fix some wacky indentation (thanks greyback!)
Matthew Wild <mwild1@gmail.com>
parents: 959
diff changeset
194 send(features);
1929
b8e6764ffefd sessionmanager: Mark client streams as opened sooner to avoid wrapping errors in unnecessary stream tags
Paul Aurich <paul@darkrain42.org>
parents: 1873
diff changeset
195
40
2c0147bbd81a Move stream opening handling from xmlhandlers to sessionmanager
Matthew Wild <mwild1@gmail.com>
parents: 38
diff changeset
196 end
2c0147bbd81a Move stream opening handling from xmlhandlers to sessionmanager
Matthew Wild <mwild1@gmail.com>
parents: 38
diff changeset
197
959
e3db909065f2 sessionmanager, s2smanager, mod_component: Send reply </stream:stream> when client closes stream
Matthew Wild <mwild1@gmail.com>
parents: 950
diff changeset
198 function streamclosed(session)
e3db909065f2 sessionmanager, s2smanager, mod_component: Send reply </stream:stream> when client closes stream
Matthew Wild <mwild1@gmail.com>
parents: 950
diff changeset
199 session.send("</stream:stream>");
e3db909065f2 sessionmanager, s2smanager, mod_component: Send reply </stream:stream> when client closes stream
Matthew Wild <mwild1@gmail.com>
parents: 950
diff changeset
200 session.notopen = true;
e3db909065f2 sessionmanager, s2smanager, mod_component: Send reply </stream:stream> when client closes stream
Matthew Wild <mwild1@gmail.com>
parents: 950
diff changeset
201 end
e3db909065f2 sessionmanager, s2smanager, mod_component: Send reply </stream:stream> when client closes stream
Matthew Wild <mwild1@gmail.com>
parents: 950
diff changeset
202
175
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
203 function send_to_available_resources(user, host, stanza)
176
e5cd2a03891d Outbound presence subscription
Waqas Hussain <waqas20@gmail.com>
parents: 175
diff changeset
204 local count = 0;
175
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
205 local to = stanza.attr.to;
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
206 stanza.attr.to = nil;
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
207 local h = hosts[host];
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
208 if h and h.type == "local" then
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
209 local u = h.sessions[user];
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
210 if u then
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
211 for k, session in pairs(u.sessions) do
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
212 if session.presence then
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
213 session.send(stanza);
176
e5cd2a03891d Outbound presence subscription
Waqas Hussain <waqas20@gmail.com>
parents: 175
diff changeset
214 count = count + 1;
175
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
215 end
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
216 end
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
217 end
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
218 end
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
219 stanza.attr.to = to;
176
e5cd2a03891d Outbound presence subscription
Waqas Hussain <waqas20@gmail.com>
parents: 175
diff changeset
220 return count;
175
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
221 end
5f71d290bb44 Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents: 156
diff changeset
222
614
335f2921ae0c Newline at end of file for sessionmanager
Matthew Wild <mwild1@gmail.com>
parents: 597
diff changeset
223 return _M;