prosody
8ff322b550a3
core/sessionmanager.lua

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core/sessionmanager.lua @ 356:8ff322b550a3

Log number of open sessions on session creation
author Matthew Wild <mwild1@gmail.com>
date Thu, 20 Nov 2008 01:32:24 +0000
parent 339:c6446bbfe40c
child 357:17bcecb06420
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1
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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 st = require "util.stanza";
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19 local newproxy = newproxy;
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20 local getmetatable = getmetatable;
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22 module "sessionmanager"
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24 local open_sessions = 0;
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26 function new_session(conn)
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27 local session = { conn = conn, priority = 0, type = "c2s_unauthed" };
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28 if true then
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29 session.trace = newproxy(true);
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30 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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31 end
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32 open_sessions = open_sessions + 1;
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33 log("info", "open sessions now: ".. open_sessions);
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34 local w = conn.write;
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35 session.send = function (t) w(tostring(t)); end
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36 return session;
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37 end
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39 function destroy_session(session, err)
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40 (session.log or log)("info", "Destroying session");
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42 -- Send unavailable presence
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43 if session.presence then
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44 local pres = st.presence{ type = "unavailable" };
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45 if (not err) or err == "closed" then err = "connection closed"; end
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46 pres:tag("status"):text("Disconnected: "..err);
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47 session.stanza_dispatch(pres);
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48 end
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49
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50 -- Remove session/resource from user's session list
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51 if session.host and session.username then
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52 if session.resource then
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53 hosts[session.host].sessions[session.username].sessions[session.resource] = nil;
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54 end
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55 if hosts[session.host] and hosts[session.host].sessions[session.username] then
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56 if not next(hosts[session.host].sessions[session.username].sessions) then
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57 log("debug", "All resources of %s are now offline", session.username);
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58 hosts[session.host].sessions[session.username] = nil;
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59 end
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60 end
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61 end
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63 for k in pairs(session) do
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64 if k ~= "trace" then
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65 session[k] = nil;
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66 end
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67 end
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68 end
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69
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70 function make_authenticated(session, username)
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71 session.username = username;
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72 if session.type == "c2s_unauthed" then
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73 session.type = "c2s";
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74 end
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75 return true;
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76 end
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77
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78 -- returns true, nil on success
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79 -- returns nil, err_type, err, err_message on failure
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80 function bind_resource(session, resource)
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81 if not session.username then return nil, "auth", "not-authorized", "Cannot bind resource before authentication"; end
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82 if session.resource then return nil, "cancel", "already-bound", "Cannot bind multiple resources on a single connection"; end
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83 -- We don't support binding multiple resources
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84
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85 resource = resource or uuid_generate();
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86 --FIXME: Randomly-generated resources must be unique per-user, and never conflict with existing
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87
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88 if not hosts[session.host].sessions[session.username] then
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89 hosts[session.host].sessions[session.username] = { sessions = {} };
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90 else
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91 if hosts[session.host].sessions[session.username].sessions[resource] then
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92 -- Resource conflict
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93 return nil, "cancel", "conflict", "Resource already exists"; -- TODO kick old resource
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94 end
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95 end
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96
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97 session.resource = resource;
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98 session.full_jid = session.username .. '@' .. session.host .. '/' .. resource;
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99 hosts[session.host].sessions[session.username].sessions[resource] = session;
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100
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101 session.roster = rm_load_roster(session.username, session.host);
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102
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103 return true;
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104 end
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105
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106 function streamopened(session, attr)
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107 local send = session.send;
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108 session.host = attr.to or error("Client failed to specify destination hostname");
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109 session.version = tonumber(attr.version) or 0;
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110 session.streamid = m_random(1000000, 99999999);
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111 (session.log or session)("debug", "Client sent opening <stream:stream> to %s", session.host);
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114 send("<?xml version='1.0'?>");
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115 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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116
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117 if not hosts[session.host] then
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118 -- We don't serve this host...
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119 session:close{ condition = "host-unknown", text = "This server does not serve "..tostring(session.host)};
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120 return;
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121 end
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123
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124 local features = {};
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125 modulemanager.fire_event("stream-features", session, features);
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126
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127 -- FIXME: Need to send() this all at once
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128 send("<stream:features>");
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129
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130 for _, feature in ipairs(features) do
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131 send(tostring(feature));
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132 end
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133
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134 send("</stream:features>");
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135 log("info", "Stream opened successfully");
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136 session.notopen = nil;
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137 end
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138
175
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139 function send_to_available_resources(user, host, stanza)
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140 local count = 0;
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141 local to = stanza.attr.to;
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142 stanza.attr.to = nil;
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143 local h = hosts[host];
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144 if h and h.type == "local" then
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145 local u = h.sessions[user];
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146 if u then
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147 for k, session in pairs(u.sessions) do
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148 if session.presence then
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149 session.send(stanza);
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150 count = count + 1;
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151 end
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152 end
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153 end
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154 end
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155 stanza.attr.to = to;
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156 return count;
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157 end
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158
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159 return _M;