annotate mod_tcpproxy/mod_tcpproxy.lua @ 3587:c24d43ababc6

mod_storage_xmlarchive: Try harder to limit range of time to check Fixes read of entire index in case where the time range is outside the range present in the archive.
author Kim Alvefur <zash@zash.se>
date Tue, 07 May 2019 17:10:07 +0200
parents db8b256f51ff
children 3804332c204e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 local st = require "util.stanza";
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3 local xmlns_ibb = "http://jabber.org/protocol/ibb";
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4 local xmlns_tcp = "http://prosody.im/protocol/tcpproxy";
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6 local host_attr, port_attr = xmlns_tcp.."\1host", xmlns_tcp.."\1port";
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8 local base64 = require "util.encodings".base64;
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9 local b64, unb64 = base64.encode, base64.decode;
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11 local host = module.host;
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13 local open_connections = {};
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15 local function new_session(jid, sid, conn)
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16 if not open_connections[jid] then
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17 open_connections[jid] = {};
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18 end
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19 open_connections[jid][sid] = conn;
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20 end
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21 local function close_session(jid, sid)
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22 if open_connections[jid] then
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23 open_connections[jid][sid] = nil;
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24 if next(open_connections[jid]) == nil then
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25 open_connections[jid] = nil;
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26 end
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27 return true;
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28 end
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29 end
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31 function proxy_component(origin, stanza)
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32 local ibb_tag = stanza.tags[1];
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33 if (not (stanza.name == "iq" and stanza.attr.type == "set")
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34 and stanza.name ~= "message")
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35 or
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36 (not (ibb_tag)
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37 or ibb_tag.attr.xmlns ~= xmlns_ibb) then
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38 if stanza.attr.type ~= "error" then
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39 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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40 end
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41 return;
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42 end
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43
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44 if ibb_tag.name == "open" then
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45 -- Starting a new stream
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46 local to_host, to_port = ibb_tag.attr[host_attr], ibb_tag.attr[port_attr];
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47 local jid, sid = stanza.attr.from, ibb_tag.attr.sid;
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48 if not (to_host and to_port) then
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49 origin.send(st.error_reply(stanza, "modify", "bad-request", "No host/port specified"));
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50 return true;
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51 elseif not sid or sid == "" then
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52 origin.send(st.error_reply(stanza, "modify", "bad-request", "No sid specified"));
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53 return true;
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54 elseif ibb_tag.attr.stanza ~= "message" then
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55 origin.send(st.error_reply(stanza, "modify", "bad-request", "Only 'message' stanza transport is supported"));
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56 return true;
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57 end
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58 local conn, err = socket.tcp();
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59 if not conn then
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60 origin.send(st.error_reply(stanza, "wait", "resource-constraint", err));
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61 return true;
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62 end
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63 conn:settimeout(0);
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64
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65 local success, err = conn:connect(to_host, to_port);
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66 if not success and err ~= "timeout" then
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67 origin.send(st.error_reply(stanza, "wait", "remote-server-not-found", err));
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68 return true;
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69 end
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70
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71 local listener,seq = {}, 0;
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72 function listener.onconnect(conn)
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73 origin.send(st.reply(stanza));
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74 end
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75 function listener.onincoming(conn, data)
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76 origin.send(st.message({to=jid,from=host})
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77 :tag("data", {xmlns=xmlns_ibb,seq=seq,sid=sid})
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78 :text(b64(data)));
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79 seq = seq + 1;
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80 end
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81 function listener.ondisconnect(conn, err)
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82 origin.send(st.message({to=jid,from=host})
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83 :tag("close", {xmlns=xmlns_ibb,sid=sid}));
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84 close_session(jid, sid);
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85 end
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86
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87 conn = server.wrapclient(conn, to_host, to_port, listener, "*a" );
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88 new_session(jid, sid, conn);
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89 elseif ibb_tag.name == "data" then
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90 local conn = open_connections[stanza.attr.from][ibb_tag.attr.sid];
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91 if conn then
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92 local data = unb64(ibb_tag:get_text());
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93 if data then
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94 conn:write(data);
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95 else
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96 origin.send(
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97 st.error_reply(stanza, "modify", "bad-request", "Invalid data (base64?)")
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98 );
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99 return true;
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100 end
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101 else
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102 origin.send(st.error_reply(stanza, "cancel", "item-not-found"));
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103 return true;
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104 end
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105 elseif ibb_tag.name == "close" then
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106 if close_session(stanza.attr.from, ibb_tag.attr.sid) then
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107 origin.send(st.reply(stanza));
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108 else
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109 origin.send(st.error_reply(stanza, "cancel", "item-not-found"));
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110 return true;
147
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111 end
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112 end
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113 end
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114
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115 local function stanza_handler(event)
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116 proxy_component(event.origin, event.stanza);
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117 return true;
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118 end
283
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119 module:hook("iq/bare", stanza_handler, -1);
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120 module:hook("message/bare", stanza_handler, -1);
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121 module:hook("presence/bare", stanza_handler, -1);
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122 module:hook("iq/full", stanza_handler, -1);
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123 module:hook("message/full", stanza_handler, -1);
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124 module:hook("presence/full", stanza_handler, -1);
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125 module:hook("iq/host", stanza_handler, -1);
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126 module:hook("message/host", stanza_handler, -1);
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127 module:hook("presence/host", stanza_handler, -1);
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128
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129 require "core.componentmanager".register_component(host, function() end); -- COMPAT Prosody 0.7