prosody
e5cd2a03891d
core/sessionmanager.lua

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core/sessionmanager.lua @ 176:e5cd2a03891d

Outbound presence subscription
author Waqas Hussain <waqas20@gmail.com>
date Sat, 25 Oct 2008 21:16:08 +0500
parent 175:5f71d290bb44
child 304:7b28fa8bbfe5
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2 local tonumber, tostring = tonumber, tostring;
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3 local ipairs, pairs, print, next= ipairs, pairs, print, next;
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4 local collectgarbage = collectgarbage;
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5 local m_random = import("math", "random");
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6 local format = import("string", "format");
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7
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8 local hosts = hosts;
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9 local sessions = sessions;
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11 local modulemanager = require "core.modulemanager";
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12 local log = require "util.logger".init("sessionmanager");
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13 local error = error;
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14 local uuid_generate = require "util.uuid".generate;
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15 local rm_load_roster = require "core.rostermanager".load_roster;
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17 local newproxy = newproxy;
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18 local getmetatable = getmetatable;
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20 module "sessionmanager"
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21
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22 local open_sessions = 0;
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24 function new_session(conn)
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25 local session = { conn = conn, priority = 0, type = "c2s_unauthed" };
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26 if true then
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27 session.trace = newproxy(true);
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28 getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; print("Session got collected, now "..open_sessions.." sessions are allocated") end;
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29 end
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30 open_sessions = open_sessions + 1;
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31 local w = conn.write;
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32 session.send = function (t) w(tostring(t)); end
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33 return session;
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34 end
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36 function destroy_session(session)
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37 (session.log or log)("info", "Destroying session");
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38 if session.host and session.username then
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39 if session.resource then
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40 hosts[session.host].sessions[session.username].sessions[session.resource] = nil;
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41 end
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42 if hosts[session.host] and hosts[session.host].sessions[session.username] then
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43 if not next(hosts[session.host].sessions[session.username].sessions) then
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44 log("debug", "All resources of %s are now offline", session.username);
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45 hosts[session.host].sessions[session.username] = nil;
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46 end
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47 end
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48 end
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49 session.conn = nil;
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50 session.disconnect = nil;
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51 for k in pairs(session) do
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52 if k ~= "trace" then
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53 session[k] = nil;
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54 end
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55 end
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56 end
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57
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58 function send_to_session(session, data)
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59 log("debug", "Sending: %s", tostring(data));
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60 session.conn.write(tostring(data));
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61 end
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62
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63 function make_authenticated(session, username)
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64 session.username = username;
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65 if session.type == "c2s_unauthed" then
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66 session.type = "c2s";
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67 end
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68 return true;
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69 end
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70
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71 function bind_resource(session, resource)
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72 if not session.username then return false, "auth"; end
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73 if session.resource then return false, "constraint"; end -- We don't support binding multiple resources
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74 resource = resource or uuid_generate();
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75 --FIXME: Randomly-generated resources must be unique per-user, and never conflict with existing
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76
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77 if not hosts[session.host].sessions[session.username] then
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78 hosts[session.host].sessions[session.username] = { sessions = {} };
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79 else
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80 if hosts[session.host].sessions[session.username].sessions[resource] then
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81 -- Resource conflict
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82 return false, "conflict"; -- TODO kick old resource
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83 end
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84 end
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85
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86 session.resource = resource;
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87 session.full_jid = session.username .. '@' .. session.host .. '/' .. resource;
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88 hosts[session.host].sessions[session.username].sessions[resource] = session;
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89
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90 session.roster = rm_load_roster(session.username, session.host);
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91
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92 return true;
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93 end
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94
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95 function streamopened(session, attr)
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96 local send = session.send;
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97 session.host = attr.to or error("Client failed to specify destination hostname");
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98 session.version = tonumber(attr.version) or 0;
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99 session.streamid = m_random(1000000, 99999999);
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100 print(session, session.host, "Client opened stream");
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101 send("<?xml version='1.0'?>");
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102 send(format("<stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='%s' from='%s' version='1.0'>", session.streamid, session.host));
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103
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104 local features = {};
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105 modulemanager.fire_event("stream-features", session, features);
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106
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107 send("<stream:features>");
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108
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109 for _, feature in ipairs(features) do
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110 send_to_session(session, tostring(feature));
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111 end
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112
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113 send("</stream:features>");
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114 log("info", "Stream opened successfully");
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115 session.notopen = nil;
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116 end
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117
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118 function send_to_available_resources(user, host, stanza)
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119 local count = 0;
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120 local to = stanza.attr.to;
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121 stanza.attr.to = nil;
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122 local h = hosts[host];
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123 if h and h.type == "local" then
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124 local u = h.sessions[user];
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125 if u then
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126 for k, session in pairs(u.sessions) do
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127 if session.presence then
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128 session.send(stanza);
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129 count = count + 1;
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130 end
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131 end
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132 end
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133 end
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134 stanza.attr.to = to;
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135 return count;
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136 end
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137
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138 return _M;