Thu, 04 Dec 2008 18:47:26 +0000
Abstract xmlhandlers a bit more, also add error callbacks
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1 | -- Prosody IM v0.1 |
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2 | -- Copyright (C) 2008 Matthew Wild |
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3 | -- Copyright (C) 2008 Waqas Hussain |
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4 | -- |
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5 | -- This program is free software; you can redistribute it and/or |
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6 | -- modify it under the terms of the GNU General Public License |
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7 | -- as published by the Free Software Foundation; either version 2 |
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8 | -- of the License, or (at your option) any later version. |
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9 | -- |
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10 | -- This program is distributed in the hope that it will be useful, |
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11 | -- but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | -- GNU General Public License for more details. |
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14 | -- |
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15 | -- You should have received a copy of the GNU General Public License |
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16 | -- along with this program; if not, write to the Free Software |
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17 | -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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18 | -- |
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19 | |
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20 | |
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21 | |
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22 | local logger = require "logger"; |
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23 | local lxp = require "lxp" |
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24 | local init_xmlhandlers = require "core.xmlhandlers" |
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25 | local sm_new_session = require "core.sessionmanager".new_session; |
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26 | |
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27 | local connlisteners_register = require "net.connlisteners".register; |
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28 | |
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29 | local t_insert = table.insert; |
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30 | local t_concat = table.concat; |
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31 | local t_concatall = function (t, sep) local tt = {}; for _, s in ipairs(t) do t_insert(tt, tostring(s)); end return t_concat(tt, sep); end |
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32 | local m_random = math.random; |
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33 | local format = string.format; |
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34 | local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session; --import("core.sessionmanager", "new_session", "destroy_session"); |
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35 | local sm_streamopened = sessionmanager.streamopened; |
331 | 36 | local sm_streamclosed = sessionmanager.streamclosed; |
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37 | local st = stanza; |
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38 | |
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39 | local stream_callbacks = { streamopened = sm_streamopened, streamclosed = sm_streamclosed, handlestanza = core_process_stanza }; |
331 | 40 | |
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41 | local sessions = {}; |
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42 | local xmppclient = { default_port = 5222, default_mode = "*a" }; |
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43 | |
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44 | -- These are session methods -- |
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45 | |
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46 | local function session_reset_stream(session) |
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47 | -- Reset stream |
331 | 48 | local parser = lxp.new(init_xmlhandlers(session, stream_callbacks), "|"); |
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49 | session.parser = parser; |
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50 | |
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51 | session.notopen = true; |
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52 | |
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53 | function session.data(conn, data) |
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54 | parser:parse(data); |
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55 | end |
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56 | return true; |
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57 | end |
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58 | |
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59 | |
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60 | local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'}; |
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61 | local function session_close(session, reason) |
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62 | local log = session.log or log; |
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63 | if session.conn then |
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64 | if reason then |
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65 | if type(reason) == "string" then -- assume stream error |
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66 | log("info", "Disconnecting client, <stream:error> is: %s", reason); |
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67 | session.send(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' })); |
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68 | elseif type(reason) == "table" then |
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69 | if reason.condition then |
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70 | local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up(); |
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71 | if reason.text then |
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72 | stanza:tag("text", stream_xmlns_attr):text(reason.text):up(); |
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73 | end |
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74 | if reason.extra then |
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75 | stanza:add_child(reason.extra); |
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76 | end |
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77 | log("info", "Disconnecting client, <stream:error> is: %s", tostring(stanza)); |
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78 | session.send(stanza); |
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79 | elseif reason.name then -- a stanza |
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80 | log("info", "Disconnecting client, <stream:error> is: %s", tostring(reason)); |
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81 | session.send(reason); |
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82 | end |
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83 | end |
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84 | end |
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85 | session.send("</stream:stream>"); |
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86 | session.conn.close(); |
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87 | xmppclient.disconnect(session.conn, "stream error"); |
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88 | end |
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89 | end |
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90 | |
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91 | |
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92 | -- End of session methods -- |
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93 | |
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94 | function xmppclient.listener(conn, data) |
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95 | local session = sessions[conn]; |
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96 | if not session then |
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97 | session = sm_new_session(conn); |
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98 | sessions[conn] = session; |
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99 | |
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100 | -- Logging functions -- |
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101 | |
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102 | local mainlog, log = log; |
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103 | do |
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104 | local conn_name = "c2s"..tostring(conn):match("[a-f0-9]+$"); |
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105 | log = logger.init(conn_name); |
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106 | end |
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107 | local print = function (...) log("info", t_concatall({...}, "\t")); end |
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108 | session.log = log; |
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109 | |
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110 | print("Client connected"); |
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111 | |
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112 | session.reset_stream = session_reset_stream; |
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113 | session.close = session_close; |
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114 | |
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115 | session_reset_stream(session); -- Initialise, ready for use |
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116 | |
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117 | -- TODO: Below function should be session,stanza - and xmlhandlers should use :method() notation to call, |
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118 | -- this will avoid the useless indirection we have atm |
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119 | -- (I'm on a mission, no time to fix now) |
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120 | |
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121 | -- Debug version -- |
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122 | --local function handleerr(err) print("Traceback:", err, debug.traceback()); end |
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123 | --session.stanza_dispatch = function (stanza) return select(2, xpcall(function () return core_process_stanza(session, stanza); end, handleerr)); end |
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124 | |
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125 | end |
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126 | if data then |
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127 | session.data(conn, data); |
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128 | end |
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129 | end |
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130 | |
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131 | function xmppclient.disconnect(conn, err) |
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132 | local session = sessions[conn]; |
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133 | if session then |
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134 | (session.log or log)("info", "Client disconnected: %s", err); |
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135 | sm_destroy_session(session); |
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136 | sessions[conn] = nil; |
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137 | session = nil; |
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138 | collectgarbage("collect"); |
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139 | end |
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140 | end |
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141 | |
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142 | connlisteners_register("xmppclient", xmppclient); |