prosody
091f91a1f67a
core/xmlhandlers.lua

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core/xmlhandlers.lua @ 33:091f91a1f67a

Let modules set/write globals
author Matthew Wild <mwild1@gmail.com>
date Wed, 01 Oct 2008 01:18:19 +0100
parent 31:aaccbf07849b
child 38:3fdfd6e0cb4e
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1
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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
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13 local error = error;
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14
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15 module "xmlhandlers"
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16
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17 function init_xmlhandlers(session)
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18 local ns_stack = { "" };
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19 local curr_ns = "";
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20 local curr_tag;
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21 local chardata = {};
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22 local xml_handlers = {};
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23 local log = session.log;
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24 local print = function (...) log("info", "xmlhandlers", t_concatall({...}, "\t")); end
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25
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26 local send = session.send;
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27
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28 local stanza
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29 function xml_handlers:StartElement(name, attr)
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30 if stanza and #chardata > 0 then
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31 -- We have some character data in the buffer
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32 stanza:text(t_concat(chardata));
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33 chardata = {};
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34 end
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35 curr_ns,name = name:match("^(.+):(%w+)$");
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36 if not stanza then
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37 if session.notopen then
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38 if name == "stream" then
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39 session.host = attr.to or error("Client failed to specify destination hostname");
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40 session.version = attr.version or 0;
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41 session.streamid = m_random(1000000, 99999999);
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42 print(session, session.host, "Client opened stream");
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43 send("<?xml version='1.0'?>");
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44 send(format("<stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='%s' from='%s'>", session.streamid, session.host));
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45 --send("<stream:features>");
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46 --send("<mechanism>PLAIN</mechanism>");
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47 --send [[<register xmlns="http://jabber.org/features/iq-register"/> ]]
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48 --send("</stream:features>");
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49 log("info", "core", "Stream opened successfully");
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50 session.notopen = nil;
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51 return;
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52 end
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53 error("Client failed to open stream successfully");
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54 end
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55 if name ~= "iq" and name ~= "presence" and name ~= "message" then
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56 error("Client sent invalid top-level stanza");
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57 end
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58 stanza = st.stanza(name, { to = attr.to, type = attr.type, id = attr.id, xmlns = curr_ns });
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59 curr_tag = stanza;
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60 else
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61 attr.xmlns = curr_ns;
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62 stanza:tag(name, attr);
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63 end
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64 end
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65 function xml_handlers:CharacterData(data)
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66 if stanza then
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67 t_insert(chardata, data);
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68 end
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69 end
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70 function xml_handlers:EndElement(name)
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71 curr_ns,name = name:match("^(.+):(%w+)$");
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72 if (not stanza) or #stanza.last_add < 0 or (#stanza.last_add > 0 and name ~= stanza.last_add[#stanza.last_add].name) then error("XML parse error in client stream"); end
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73 if stanza and #chardata > 0 then
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74 -- We have some character data in the buffer
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75 stanza:text(t_concat(chardata));
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76 chardata = {};
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77 end
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78 -- Complete stanza
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79 if #stanza.last_add == 0 then
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80 session.stanza_dispatch(stanza);
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81 stanza = nil;
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82 else
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83 stanza:up();
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84 end
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85 end
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86 return xml_handlers;
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87 end
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88
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89 return init_xmlhandlers;