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annotate core/xmlhandlers.lua @ 99:ba08b8a4eeef

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Abstract connections with "connection listeners" - Added connlistener for xmppclient - SASL/TLS now use a new session:reset_stream() method - main.lua on its way to being a bit neater
author Matthew Wild <mwild1@gmail.com>
date Wed, 22 Oct 2008 17:36:21 +0100
parents 14ea0fe6ca86
children fbb3a4ff9cf1 40e443eacbbd
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2 require "util.stanza"
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3
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4 local st = stanza;
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5 local tostring = tostring;
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6 local format = string.format;
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7 local m_random = math.random;
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8 local t_insert = table.insert;
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9 local t_remove = table.remove;
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10 local t_concat = table.concat;
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11 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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12 local sm_destroy_session = import("core.sessionmanager", "destroy_session");
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14 local error = error;
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15
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16 module "xmlhandlers"
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17
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18 function init_xmlhandlers(session, streamopened)
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19 local ns_stack = { "" };
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20 local curr_ns = "";
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21 local curr_tag;
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22 local chardata = {};
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23 local xml_handlers = {};
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24 local log = session.log;
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25 local print = function (...) log("info", "xmlhandlers", t_concatall({...}, "\t")); end
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26
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27 local send = session.send;
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28
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29 local stanza
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30 function xml_handlers:StartElement(name, attr)
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31 if stanza and #chardata > 0 then
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32 -- We have some character data in the buffer
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33 stanza:text(t_concat(chardata));
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34 chardata = {};
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35 end
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36 curr_ns,name = name:match("^(.+):(%w+)$");
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37 if not stanza then
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38 if session.notopen then
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39 if name == "stream" then
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40 streamopened(session, attr);
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41 return;
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42 end
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43 error("Client failed to open stream successfully");
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44 end
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45 if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then
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46 error("Client sent invalid top-level stanza");
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47 end
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48 attr.xmlns = curr_ns;
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49 stanza = st.stanza(name, attr); --{ to = attr.to, type = attr.type, id = attr.id, xmlns = curr_ns });
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50 curr_tag = stanza;
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51 else
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52 attr.xmlns = curr_ns;
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53 stanza:tag(name, attr);
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54 end
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55 end
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56 function xml_handlers:CharacterData(data)
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57 if stanza then
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58 t_insert(chardata, data);
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59 end
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60 end
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61 function xml_handlers:EndElement(name)
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62 curr_ns,name = name:match("^(.+):(%w+)$");
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63 if (not stanza) or #stanza.last_add < 0 or (#stanza.last_add > 0 and name ~= stanza.last_add[#stanza.last_add].name) then
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64 if name == "stream" then
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65 log("debug", "Stream closed");
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66 sm_destroy_session(session);
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67 return;
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68 else
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69 error("XML parse error in client stream");
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70 end
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71 end
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72 if stanza and #chardata > 0 then
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73 -- We have some character data in the buffer
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74 stanza:text(t_concat(chardata));
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75 chardata = {};
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76 end
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77 -- Complete stanza
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78 if #stanza.last_add == 0 then
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79 session.stanza_dispatch(stanza);
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80 stanza = nil;
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81 else
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82 stanza:up();
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83 end
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84 end
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85 return xml_handlers;
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86 end
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87
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88 return init_xmlhandlers;