verse
98dc1750584d
component.lua

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component.lua @ 438:98dc1750584d 0.10.0

pubsub: Support for 'notify' in retract and purge operations This is a slight API change for :retract(), but should be backwards-compatible.
author Matthew Wild <mwild1@gmail.com>
date Mon, 06 Dec 2021 09:09:50 +0000
parent 411:db462d4feb44
child 485:c9a144591649
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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84
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1 local verse = require "verse";
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2 local stream = verse.stream_mt;
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3
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4 local jid_split = require "util.jid".split;
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5 local lxp = require "lxp";
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6 local st = require "util.stanza";
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7 local sha1 = require "util.hashes".sha1;
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8
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9 -- Shortcuts to save having to load util.stanza
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10 verse.message, verse.presence, verse.iq, verse.stanza, verse.reply, verse.error_reply =
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11 st.message, st.presence, st.iq, st.stanza, st.reply, st.error_reply;
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12
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13 local new_xmpp_stream = require "util.xmppstream".new;
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14
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15 local xmlns_stream = "http://etherx.jabber.org/streams";
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16 local xmlns_component = "jabber:component:accept";
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17
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18 local stream_callbacks = {
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19 stream_ns = xmlns_stream,
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20 stream_tag = "stream",
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21 default_ns = xmlns_component };
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22
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23 function stream_callbacks.streamopened(stream, attr)
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24 stream.stream_id = attr.id;
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25 if not stream:event("opened", attr) then
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26 stream.notopen = nil;
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27 end
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28 return true;
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29 end
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30
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31 function stream_callbacks.streamclosed(stream)
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32 return stream:event("closed");
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33 end
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34
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35 function stream_callbacks.handlestanza(stream, stanza)
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36 if stanza.attr.xmlns == xmlns_stream then
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37 return stream:event("stream-"..stanza.name, stanza);
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38 elseif stanza.attr.xmlns or stanza.name == "handshake" then
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39 return stream:event("stream/"..(stanza.attr.xmlns or xmlns_component), stanza);
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40 end
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41
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42 return stream:event("stanza", stanza);
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43 end
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44
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45 function stream:reset()
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46 if self.stream then
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47 self.stream:reset();
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48 else
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49 self.stream = new_xmpp_stream(self, stream_callbacks);
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50 end
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51 self.notopen = true;
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52 return true;
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53 end
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54
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55 function stream:connect_component(jid, pass)
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56 self.jid, self.password = jid, pass;
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57 self.username, self.host, self.resource = jid_split(jid);
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58
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59 function self.data(conn, data)
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60 local ok, err = self.stream:feed(data);
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61 if ok then return; end
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62 stream:debug("Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "));
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63 stream:close("xml-not-well-formed");
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64 end
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65
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66 self:hook("incoming-raw", function (data) return self.data(self.conn, data); end);
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67
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68 self.curr_id = 0;
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69
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70 self.tracked_iqs = {};
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71 self:hook("stanza", function (stanza)
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72 local id, type = stanza.attr.id, stanza.attr.type;
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73 if id and stanza.name == "iq" and (type == "result" or type == "error") and self.tracked_iqs[id] then
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74 self.tracked_iqs[id](stanza);
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75 self.tracked_iqs[id] = nil;
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76 return true;
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77 end
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78 end);
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79
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80 self:hook("stanza", function (stanza)
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81 local ret;
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82 if stanza.attr.xmlns == nil or stanza.attr.xmlns == "jabber:client" then
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83 if stanza.name == "iq" and (stanza.attr.type == "get" or stanza.attr.type == "set") then
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84 local xmlns = stanza.tags[1] and stanza.tags[1].attr.xmlns;
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85 if xmlns then
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86 ret = self:event("iq/"..xmlns, stanza);
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87 if not ret then
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88 ret = self:event("iq", stanza);
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89 end
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90 end
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91 if ret == nil then
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92 self:send(verse.error_reply(stanza, "cancel", "service-unavailable"));
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93 return true;
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94 end
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95 else
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96 ret = self:event(stanza.name, stanza);
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97 end
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98 end
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99 return ret;
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100 end, -1);
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101
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102 self:hook("opened", function (attr)
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103 print(self.jid, self.stream_id, attr.id);
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104 local token = sha1(self.stream_id..pass, true);
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105
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106 self:send(st.stanza("handshake", { xmlns = xmlns_component }):text(token));
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107 self:hook("stream/"..xmlns_component, function (stanza)
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108 if stanza.name == "handshake" then
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109 self:event("authentication-success");
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110 end
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111 end);
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112 end);
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113
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114 local function stream_ready()
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115 self:event("ready");
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116 end
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117 self:hook("authentication-success", stream_ready, -1);
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118
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119 -- Initialise connection
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120 self:connect(self.connect_host or self.host, self.connect_port or 5347);
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121 self:reopen();
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122 end
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123
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124 function stream:reopen()
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125 self:reset();
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126 self:send(st.stanza("stream:stream", { to = self.jid, ["xmlns:stream"]='http://etherx.jabber.org/streams',
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127 xmlns = xmlns_component, version = "1.0" }):top_tag());
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128 end
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129
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130 function stream:close(reason)
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131 if not self.notopen then
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132 self:send("</stream:stream>");
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133 end
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134 local on_disconnect = self.conn.disconnect();
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135 self.conn:close();
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136 on_disconnect(conn, reason);
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137 end
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138
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139 function stream:send_iq(iq, callback)
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140 local id = self:new_id();
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141 self.tracked_iqs[id] = callback;
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142 iq.attr.id = id;
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143 self:send(iq);
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144 end
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145
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146 function stream:new_id()
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147 self.curr_id = self.curr_id + 1;
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148 return tostring(self.curr_id);
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149 end