prosody
d336b28b4002
plugins/mod_proxy65.lua

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plugins/mod_proxy65.lua @ 11395:d336b28b4002

mod_http_errors: Style tweak Weird to have the background all the way to the edge of the viewport. Would be nice if this could be done without the extra span.
author Kim Alvefur <zash@zash.se>
date Sun, 21 Feb 2021 07:59:17 +0100
parent 11012:027af78d8125
child 11560:3bbb1af92514
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2011 Matthew Wild
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3 -- Copyright (C) 2008-2011 Waqas Hussain
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4 -- Copyright (C) 2009 Thilo Cestonaro
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5 --
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6 -- This project is MIT/X11 licensed. Please see the
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7 -- COPYING file in the source package for more information.
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8 --
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9
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10 module:set_global();
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11
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12 local jid_compare, jid_prep = require "util.jid".compare, require "util.jid".prep;
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13 local st = require "util.stanza";
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14 local sha1 = require "util.hashes".sha1;
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15 local server = require "net.server";
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16 local portmanager = require "core.portmanager";
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17
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18 local sessions = module:shared("sessions");
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19 local transfers = module:shared("transfers");
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20 local max_buffer_size = 4096;
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21
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22 local listener = {};
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23
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24 function listener.onincoming(conn, data)
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25 local session = sessions[conn] or {};
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26
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27 local transfer = transfers[session.sha];
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28 if transfer and transfer.activated then -- copy data between initiator and target
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29 local initiator, target = transfer.initiator, transfer.target;
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30 (conn == initiator and target or initiator):write(data);
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31 return;
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32 end -- FIXME server.link should be doing this?
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33
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34 if not session.greeting_done then
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35 local nmethods = data:byte(2) or 0;
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36 if data:byte(1) == 0x05 and nmethods > 0 and #data == 2 + nmethods then -- check if we have all the data
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37 if data:find("%z") then -- 0x00 = 'No authentication' is supported
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38 session.greeting_done = true;
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39 sessions[conn] = session;
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40 conn:write("\5\0"); -- send (SOCKS version 5, No authentication)
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41 module:log("debug", "SOCKS5 greeting complete");
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42 return;
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43 end
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44 end -- else error, unexpected input
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45 conn:write("\5\255"); -- send (SOCKS version 5, no acceptable method)
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46 conn:close();
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47 module:log("debug", "Invalid SOCKS5 greeting received: %q", data:sub(1, 300));
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48 else -- connection request
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49 --local head = string.char( 0x05, 0x01, 0x00, 0x03, 40 ); -- ( VER=5=SOCKS5, CMD=1=CONNECT, RSV=0=RESERVED, ATYP=3=DOMAIMNAME, SHA-1 size )
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50 if #data == 47 and data:sub(1,5) == "\5\1\0\3\40" and data:sub(-2) == "\0\0" then
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51 local sha = data:sub(6, 45);
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52 conn:pause();
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53 conn:write("\5\0\0\3\40" .. sha .. "\0\0"); -- VER, REP, RSV, ATYP, BND.ADDR (sha), BND.PORT (2 Byte)
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54 if not transfers[sha] then
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55 transfers[sha] = {};
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56 transfers[sha].target = conn;
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57 session.sha = sha;
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58 module:log("debug", "SOCKS5 target connected for session %s", sha);
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59 else -- transfers[sha].target ~= nil
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60 transfers[sha].initiator = conn;
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61 session.sha = sha;
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62 module:log("debug", "SOCKS5 initiator connected for session %s", sha);
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63 server.link(conn, transfers[sha].target, max_buffer_size);
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64 server.link(transfers[sha].target, conn, max_buffer_size);
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65 end
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66 else -- error, unexpected input
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67 conn:write("\5\1\0\3\0\0\0"); -- VER, REP, RSV, ATYP, BND.ADDR (sha), BND.PORT (2 Byte)
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68 conn:close();
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69 module:log("debug", "Invalid SOCKS5 negotiation received: %q", data:sub(1, 300));
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70 end
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71 end
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72 end
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73
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74 function listener.ondisconnect(conn)
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75 local session = sessions[conn];
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76 if session then
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77 if transfers[session.sha] then
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78 local initiator, target = transfers[session.sha].initiator, transfers[session.sha].target;
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79 if initiator == conn and target ~= nil then
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80 target:close();
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81 elseif target == conn and initiator ~= nil then
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82 initiator:close();
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83 end
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84 transfers[session.sha] = nil;
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85 end
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86 -- Clean up any session-related stuff here
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87 sessions[conn] = nil;
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88 end
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89 end
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90
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91 function module.add_host(module)
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92 local host, name = module:get_host(), module:get_option_string("name", "SOCKS5 Bytestreams Service");
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93
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94 local proxy_address = module:get_option_string("proxy65_address", host);
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95 local proxy_acl = module:get_option_array("proxy65_acl");
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96
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97 -- COMPAT w/pre-0.9 where proxy65_port was specified in the components section of the config
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98 local legacy_config = module:get_option_number("proxy65_port");
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99 if legacy_config then
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100 module:log("warn", "proxy65_port is deprecated, please put proxy65_ports = { %d } into the global section instead", legacy_config);
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101 end
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102
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103 module:depends("disco");
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104 module:add_identity("proxy", "bytestreams", name);
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105 module:add_feature("http://jabber.org/protocol/bytestreams");
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106
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107 module:hook("iq-get/host/http://jabber.org/protocol/bytestreams:query", function(event)
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108 local origin, stanza = event.origin, event.stanza;
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109
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110 -- check ACL
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111 -- using 'while' instead of 'if' so we can break out of it
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112 while proxy_acl and #proxy_acl > 0 do --luacheck: ignore 512
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113 local jid = stanza.attr.from;
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114 local allow;
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115 for _, acl in ipairs(proxy_acl) do
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116 if jid_compare(jid, acl) then allow = true; break; end
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117 end
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118 if allow then break; end
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119 module:log("warn", "Denying use of proxy for %s", stanza.attr.from);
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120 origin.send(st.error_reply(stanza, "auth", "forbidden"));
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121 return true;
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122 end
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bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5375
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123
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Kim Alvefur <zash@zash.se>
parents: 9642
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124 local proxy_port = next(portmanager.get_active_services():search("proxy65", nil)[1] or {});
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Kim Alvefur <zash@zash.se>
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125 if not proxy_port then
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126 module:log("warn", "Not listening on any port");
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127 origin.send(st.error_reply(stanza, "wait", "item-not-found", "Not listening on any port"));
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128 return true;
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129 end
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130
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131 local sid = stanza.tags[1].attr.sid;
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132 origin.send(st.reply(stanza):tag("query", {xmlns="http://jabber.org/protocol/bytestreams", sid=sid})
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d2556f237bc2 mod_proxy65: Fix passing number to stanza API (thanks mimi89999)
Matthew Wild <mwild1@gmail.com>
parents: 6948
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133 :tag("streamhost", {jid=host, host=proxy_address, port=("%d"):format(proxy_port)}));
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Waqas Hussain <waqas20@gmail.com>
parents: 3694
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134 return true;
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135 end);
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parents: 5375
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136
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137 module:hook("iq-set/host/http://jabber.org/protocol/bytestreams:query", function(event)
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parents: 4414
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138 local origin, stanza = event.origin, event.stanza;
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139
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140 local query = stanza.tags[1];
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141 local sid = query.attr.sid;
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142 local from = stanza.attr.from;
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143 local to = query:get_child_text("activate");
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144 local prepped_to = jid_prep(to);
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145
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146 local info = "sid: "..tostring(sid)..", initiator: "..tostring(from)..", target: "..tostring(prepped_to or to);
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147 if prepped_to and sid then
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148 local sha = sha1(sid .. from .. prepped_to, true);
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149 if not transfers[sha] then
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150 module:log("debug", "Activation request has unknown session id; activation failed (%s)", info);
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diff changeset
151 origin.send(st.error_reply(stanza, "modify", "item-not-found"));
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diff changeset
152 elseif not transfers[sha].initiator then
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parents: 4414
diff changeset
153 module:log("debug", "The sender was not connected to the proxy; activation failed (%s)", info);
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parents: 4414
diff changeset
154 origin.send(st.error_reply(stanza, "cancel", "not-allowed", "The sender (you) is not connected to the proxy"));
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parents: 4414
diff changeset
155 --elseif not transfers[sha].target then -- can't happen, as target is set when a transfer object is created
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parents: 4414
diff changeset
156 -- module:log("debug", "The recipient was not connected to the proxy; activation failed (%s)", info);
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parents: 4414
diff changeset
157 -- origin.send(st.error_reply(stanza, "cancel", "not-allowed", "The recipient is not connected to the proxy"));
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parents: 4414
diff changeset
158 else -- if transfers[sha].initiator ~= nil and transfers[sha].target ~= nil then
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parents: 4414
diff changeset
159 module:log("debug", "Transfer activated (%s)", info);
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diff changeset
160 transfers[sha].activated = true;
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161 transfers[sha].target:resume();
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162 transfers[sha].initiator:resume();
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diff changeset
163 origin.send(st.reply(stanza));
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164 end
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165 elseif to and sid then
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parents: 4414
diff changeset
166 module:log("debug", "Malformed activation jid; activation failed (%s)", info);
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parents: 4414
diff changeset
167 origin.send(st.error_reply(stanza, "modify", "jid-malformed"));
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168 else
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parents: 4414
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169 module:log("debug", "Bad request; activation failed (%s)", info);
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diff changeset
170 origin.send(st.error_reply(stanza, "modify", "bad-request"));
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171 end
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172 return true;
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diff changeset
173 end);
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parents:
diff changeset
174 end
c5d87a3316f8 mod_proxy65: Import from prosody-modules, thanks Ephraim :)
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parents:
diff changeset
175
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176 module:provides("net", {
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177 default_port = 5000;
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178 listener = listener;
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Waqas Hussain <waqas20@gmail.com>
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179 multiplex = {
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180 pattern = "^\5";
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181 };
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182 });