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plugins/mod_c2s.lua @ 8188:8c524b7c9017
mod_disco: Advertise in stream-features after auth (probably what was meant in 200f1f6306a7) (fixes #957)
author | Kim Alvefur <zash@zash.se> |
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date | Thu, 27 Jul 2017 14:10:18 +0200 |
parent | 7955:bba71bfe2154 |
child | 7957:083c062c2fb7 |
child | 8192:4354f556c5db |
rev | line source |
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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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Remove all trailing whitespace
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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 module:set_global(); |
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10 |
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sessionmanager, mod_c2s: Move timeout logic to mod_c2s
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11 local add_task = require "util.timer".add_task; |
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12 local new_xmpp_stream = require "util.xmppstream".new; |
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13 local nameprep = require "util.encodings".stringprep.nameprep; |
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14 local sessionmanager = require "core.sessionmanager"; |
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15 local st = require "util.stanza"; |
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16 local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session; |
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17 local uuid_generate = require "util.uuid".generate; |
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18 |
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19 local xpcall, tostring, type = xpcall, tostring, type; |
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20 local traceback = debug.traceback; |
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21 |
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22 local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams"; |
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23 |
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24 local log = module._log; |
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25 |
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26 local c2s_timeout = module:get_option_number("c2s_timeout"); |
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mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
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27 local stream_close_timeout = module:get_option_number("c2s_close_timeout", 5); |
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mod_c2s: Change default of tcp_keepalives to true, and make it individually configurable through c2s_tcp_keepalives
Kim Alvefur <zash@zash.se>
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28 local opt_keepalives = module:get_option_boolean("c2s_tcp_keepalives", module:get_option_boolean("tcp_keepalives", true)); |
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29 |
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30 local measure_connections = module:measure("connections", "amount"); |
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31 |
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32 local sessions = module:shared("sessions"); |
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mod_admin_adhoc, mod_admin_telnet, mod_bosh, mod_c2s, mod_component, mod_pep, mod_presence, mod_roster, mod_s2s: Import core_post_stanza from the global prosody table.
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33 local core_process_stanza = prosody.core_process_stanza; |
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mod_announce, mod_auth_anonymous, mod_c2s, mod_c2s, mod_component, mod_iq, mod_message, mod_presence, mod_tls: Access prosody.{hosts,bare_sessions,full_sessions} instead of the old globals
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34 local hosts = prosody.hosts; |
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35 |
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36 local stream_callbacks = { default_ns = "jabber:client" }; |
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37 local listener = {}; |
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38 |
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39 module:hook("stats-update", function () |
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40 local count = 0; |
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41 for _ in pairs(sessions) do |
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42 count = count + 1; |
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43 end |
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44 measure_connections(count); |
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45 end); |
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46 |
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47 --- Stream events handlers |
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48 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'}; |
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49 |
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50 function stream_callbacks.streamopened(session, attr) |
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51 local send = session.send; |
4551 | 52 session.host = nameprep(attr.to); |
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53 if not session.host then |
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54 session:close{ condition = "improper-addressing", |
4551 | 55 text = "A valid 'to' attribute is required on stream headers" }; |
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56 return; |
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57 end |
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58 session.version = tonumber(attr.version) or 0; |
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59 session.streamid = uuid_generate(); |
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60 (session.log or session)("debug", "Client sent opening <stream:stream> to %s", session.host); |
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61 |
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mod_c2s: Become a shared module and allow being disabled on some virtualhosts
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62 if not hosts[session.host] or not hosts[session.host].modules.c2s then |
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63 -- We don't serve this host... |
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64 session:close{ condition = "host-unknown", text = "This server does not serve "..tostring(session.host)}; |
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65 return; |
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66 end |
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67 |
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68 session:open_stream(); |
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69 |
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70 (session.log or log)("debug", "Sent reply <stream:stream> to client"); |
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71 session.notopen = nil; |
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72 |
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73 -- If session.secure is *false* (not nil) then it means we /were/ encrypting |
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74 -- since we now have a new stream header, session is secured |
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75 if session.secure == false then |
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76 session.secure = true; |
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77 session.encrypted = true; |
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78 |
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79 local sock = session.conn:socket(); |
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80 if sock.info then |
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81 local info = sock:info(); |
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mod_c2s, mod_s2s: Log cipher and encryption info in a more compact and (hopefully) less confusing way
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82 (session.log or log)("info", "Stream encrypted (%s with %s)", info.protocol, info.cipher); |
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83 session.compressed = info.compression; |
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84 else |
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85 (session.log or log)("info", "Stream encrypted"); |
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86 session.compressed = sock.compression and sock:compression(); --COMPAT mw/luasec-hg |
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87 end |
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88 end |
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89 |
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90 local features = st.stanza("stream:features"); |
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91 hosts[session.host].events.fire_event("stream-features", { origin = session, features = features }); |
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92 if features.tags[1] or session.full_jid then |
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93 send(features); |
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94 else |
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95 (session.log or log)("warn", "No stream features to offer"); |
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96 session:close{ condition = "undefined-condition", text = "No stream features to proceed with" }; |
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97 end |
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98 end |
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99 |
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100 function stream_callbacks.streamclosed(session) |
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101 session.log("debug", "Received </stream:stream>"); |
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102 session:close(false); |
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103 end |
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104 |
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105 function stream_callbacks.error(session, error, data) |
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106 if error == "no-stream" then |
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107 session.log("debug", "Invalid opening stream header (%s)", (data:gsub("^([^\1]+)\1", "{%1}"))); |
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108 session:close("invalid-namespace"); |
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109 elseif error == "parse-error" then |
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110 (session.log or log)("debug", "Client XML parse error: %s", tostring(data)); |
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111 session:close("not-well-formed"); |
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112 elseif error == "stream-error" then |
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113 local condition, text = "undefined-condition"; |
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114 for child in data:children() do |
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115 if child.attr.xmlns == xmlns_xmpp_streams then |
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116 if child.name ~= "text" then |
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117 condition = child.name; |
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118 else |
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119 text = child:get_text(); |
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120 end |
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121 if condition ~= "undefined-condition" and text then |
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122 break; |
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123 end |
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124 end |
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125 end |
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126 text = condition .. (text and (" ("..text..")") or ""); |
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127 session.log("info", "Session closed by remote with error: %s", text); |
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128 session:close(nil, text); |
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129 end |
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130 end |
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131 |
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132 local function handleerr(err) log("error", "Traceback[c2s]: %s", traceback(tostring(err), 2)); end |
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133 function stream_callbacks.handlestanza(session, stanza) |
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134 stanza = session.filter("stanzas/in", stanza); |
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135 if stanza then |
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136 return xpcall(function () return core_process_stanza(session, stanza) end, handleerr); |
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137 end |
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138 end |
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139 |
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140 --- Session methods |
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141 local function session_close(session, reason) |
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142 local log = session.log or log; |
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143 if session.conn then |
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144 if session.notopen then |
6005
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mod_c2s: Break out stream opening into a separate function
Florian Zeitz <florob@babelmonkeys.de>
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5859
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|
145 session:open_stream(); |
4543
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146 end |
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parents:
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147 if reason then -- nil == no err, initiated by us, false == initiated by client |
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Kim Alvefur <zash@zash.se>
parents:
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|
148 local stream_error = st.stanza("stream:error"); |
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149 if type(reason) == "string" then -- assume stream error |
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150 stream_error:tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }); |
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151 elseif type(reason) == "table" then |
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152 if reason.condition then |
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153 stream_error:tag(reason.condition, stream_xmlns_attr):up(); |
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154 if reason.text then |
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|
155 stream_error:tag("text", stream_xmlns_attr):text(reason.text):up(); |
4543
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156 end |
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157 if reason.extra then |
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parents:
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158 stream_error:add_child(reason.extra); |
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159 end |
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160 elseif reason.name then -- a stanza |
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parents:
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|
161 stream_error = reason; |
4543
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162 end |
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163 end |
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|
164 stream_error = tostring(stream_error); |
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165 log("debug", "Disconnecting client, <stream:error> is: %s", stream_error); |
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166 session.send(stream_error); |
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167 end |
5776
bd0ff8ae98a8
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Florian Zeitz <florob@babelmonkeys.de>
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5773
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|
168 |
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169 session.send("</stream:stream>"); |
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170 function session.send() return false; end |
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171 |
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|
172 local reason_text = (reason and (reason.name or reason.text or reason.condition)) or reason; |
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173 session.log("debug", "c2s stream for %s closed: %s", session.full_jid or ("<"..session.ip..">"), reason_text or "session closed"); |
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174 |
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175 -- Authenticated incoming stream may still be sending us stanzas, so wait for </stream:stream> from remote |
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176 local conn = session.conn; |
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177 if reason_text == nil and not session.notopen and session.type == "c2s" then |
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178 -- Grace time to process data from authenticated cleanly-closed stream |
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|
179 add_task(stream_close_timeout, function () |
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180 if not session.destroyed then |
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181 session.log("warn", "Failed to receive a stream close response, closing connection anyway..."); |
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182 sm_destroy_session(session, reason_text); |
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183 conn:close(); |
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184 end |
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185 end); |
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186 else |
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187 sm_destroy_session(session, reason_text); |
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188 conn:close(); |
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189 end |
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190 else |
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191 local reason_text = (reason and (reason.name or reason.text or reason.condition)) or reason; |
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192 sm_destroy_session(session, reason_text); |
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193 end |
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194 end |
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195 |
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196 module:hook_global("user-deleted", function(event) |
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197 local username, host = event.username, event.host; |
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198 local user = hosts[host].sessions[username]; |
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199 if user and user.sessions then |
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200 for _, session in pairs(user.sessions) do |
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201 session:close{ condition = "not-authorized", text = "Account deleted" }; |
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202 end |
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203 end |
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204 end, 200); |
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205 |
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206 --- Port listener |
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207 function listener.onconnect(conn) |
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208 local session = sm_new_session(conn); |
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209 sessions[conn] = session; |
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210 |
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211 session.log("info", "Client connected"); |
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212 |
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213 -- Client is using legacy SSL (otherwise mod_tls sets this flag) |
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214 if conn:ssl() then |
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215 session.secure = true; |
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216 session.encrypted = true; |
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217 |
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218 -- Check if TLS compression is used |
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219 local sock = conn:socket(); |
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220 if sock.info then |
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221 session.compressed = sock:info"compression"; |
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222 elseif sock.compression then |
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223 session.compressed = sock:compression(); --COMPAT mw/luasec-hg |
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224 end |
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225 end |
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226 |
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227 if opt_keepalives then |
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228 conn:setoption("keepalive", opt_keepalives); |
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229 end |
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230 |
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231 session.close = session_close; |
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232 |
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233 local stream = new_xmpp_stream(session, stream_callbacks); |
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234 session.stream = stream; |
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235 session.notopen = true; |
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236 |
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237 function session.reset_stream() |
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238 session.notopen = true; |
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239 session.stream:reset(); |
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240 end |
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241 |
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242 local filter = session.filter; |
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243 function session.data(data) |
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244 -- Parse the data, which will store stanzas in session.pending_stanzas |
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245 if data then |
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246 data = filter("bytes/in", data); |
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247 if data then |
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248 local ok, err = stream:feed(data); |
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249 if not ok then |
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250 log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "):gsub("[%z\1-\31]", "_")); |
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251 session:close("not-well-formed"); |
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252 end |
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253 end |
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254 end |
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255 end |
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256 |
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257 if c2s_timeout then |
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258 add_task(c2s_timeout, function () |
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259 if session.type == "c2s_unauthed" then |
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260 session:close("connection-timeout"); |
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261 end |
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262 end); |
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263 end |
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264 |
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265 session.dispatch_stanza = stream_callbacks.handlestanza; |
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266 end |
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267 |
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268 function listener.onincoming(conn, data) |
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269 local session = sessions[conn]; |
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270 if session then |
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271 session.data(data); |
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272 end |
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273 end |
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274 |
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275 function listener.ondisconnect(conn, err) |
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276 local session = sessions[conn]; |
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277 if session then |
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278 (session.log or log)("info", "Client disconnected: %s", err or "connection closed"); |
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279 sm_destroy_session(session, err); |
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280 session.conn = nil; |
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281 sessions[conn] = nil; |
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282 end |
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283 end |
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284 |
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mod_c2s, mod_c2s: Send a whitespace on read timeout, to prod TCP into detecting if the connection died
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285 function listener.onreadtimeout(conn) |
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286 local session = sessions[conn]; |
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287 if session then |
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288 return (hosts[session.host] or prosody).events.fire_event("c2s-read-timeout", { session = session }); |
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289 end |
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290 end |
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291 |
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292 local function keepalive(event) |
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293 local session = event.session; |
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294 if not session.notopen then |
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295 return event.session.send(' '); |
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296 end |
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297 end |
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298 |
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299 function listener.associate_session(conn, session) |
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300 sessions[conn] = session; |
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301 end |
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302 |
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303 function module.add_host(module) |
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304 module:hook("c2s-read-timeout", keepalive, -1); |
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305 end |
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306 |
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307 module:hook("c2s-read-timeout", keepalive, -1); |
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308 |
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309 module:hook("server-stopping", function(event) |
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310 local reason = event.reason; |
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311 for _, session in pairs(sessions) do |
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312 session:close{ condition = "system-shutdown", text = reason }; |
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313 end |
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314 end, -100); |
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315 |
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316 |
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317 |
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mod_{admin_telnet,c2s,component,http,net_multiplex,s2s}: Use module:provides() instead of module:add_item().
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318 module:provides("net", { |
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319 name = "c2s"; |
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320 listener = listener; |
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321 default_port = 5222; |
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322 encryption = "starttls"; |
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323 multiplex = { |
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324 pattern = "^<.*:stream.*%sxmlns%s*=%s*(['\"])jabber:client%1.*>"; |
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325 }; |
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326 }); |
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327 |
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Waqas Hussain <waqas20@gmail.com>
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328 module:provides("net", { |
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329 name = "legacy_ssl"; |
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330 listener = listener; |
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331 encryption = "ssl"; |
4620
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332 multiplex = { |
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333 pattern = "^<.*:stream.*%sxmlns%s*=%s*(['\"])jabber:client%1.*>"; |
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334 }; |
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335 }); |
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336 |
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337 |