prosody
ec09d16a51e1
core/xmlhandlers.lua

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core/xmlhandlers.lua @ 2493:ec09d16a51e1

xmlhandlers: Rearranged a little code.
author Waqas Hussain <waqas20@gmail.com>
date Sat, 23 Jan 2010 18:41:20 +0500
parent 2492:b5e2d1919ec3
child 2505:0849e349992d
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1 -- Prosody IM
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90ce865eebd8 Update copyright notices for 2009
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 Waqas Hussain
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4 --
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b1885732e979 GPL->MIT!
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9
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11 require "util.stanza"
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12
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13 local st = stanza;
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14 local tostring = tostring;
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15 local pairs = pairs;
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16 local ipairs = ipairs;
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17 local t_insert = table.insert;
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18 local t_concat = table.concat;
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19
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20 local default_log = require "util.logger".init("xmlhandlers");
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22 local error = error;
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23
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24 module "xmlhandlers"
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25
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26 local ns_prefixes = {
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27 ["http://www.w3.org/XML/1998/namespace"] = "xml";
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28 };
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30 local xmlns_streams = "http://etherx.jabber.org/streams";
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31
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32 local ns_separator = "\1";
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33 local ns_pattern = "^([^"..ns_separator.."]*)"..ns_separator.."?(.*)$";
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34
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35 function init_xmlhandlers(session, stream_callbacks)
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36 local ns_stack = { "" };
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37 local curr_tag;
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38 local chardata = {};
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39 local xml_handlers = {};
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40 local log = session.log or default_log;
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41
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42 local cb_streamopened = stream_callbacks.streamopened;
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43 local cb_streamclosed = stream_callbacks.streamclosed;
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44 local cb_error = stream_callbacks.error or function(session, e) error("XML stream error: "..tostring(e)); end;
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45 local cb_handlestanza = stream_callbacks.handlestanza;
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46
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47 local stream_ns = stream_callbacks.stream_ns or xmlns_streams;
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48 local stream_tag = stream_ns..ns_separator..(stream_callbacks.stream_tag or "stream");
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49 local stream_error_tag = stream_ns..ns_separator..(stream_callbacks.error_tag or "error");
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50
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51 local stream_default_ns = stream_callbacks.default_ns;
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52
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53 local stanza;
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54 function xml_handlers:StartElement(tagname, attr)
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55 if stanza and #chardata > 0 then
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56 -- We have some character data in the buffer
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57 stanza:text(t_concat(chardata));
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58 chardata = {};
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59 end
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60 local curr_ns,name = tagname:match(ns_pattern);
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61 if name == "" then
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62 curr_ns, name = "", curr_ns;
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63 end
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64
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65 if curr_ns ~= stream_default_ns then
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66 attr.xmlns = curr_ns;
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67 end
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68
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69 -- FIXME !!!!!
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70 for i=1,#attr do
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71 local k = attr[i];
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72 attr[i] = nil;
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73 local ns, nm = k:match(ns_pattern);
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74 if nm ~= "" then
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75 ns = ns_prefixes[ns];
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76 if ns then
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77 attr[ns..":"..nm] = attr[k];
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78 attr[k] = nil;
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79 end
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80 end
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81 end
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82
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83 if not stanza then --if we are not currently inside a stanza
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84 if session.notopen then
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85 if tagname == stream_tag then
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86 if cb_streamopened then
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87 cb_streamopened(session, attr);
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88 end
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89 else
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90 -- Garbage before stream?
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91 cb_error(session, "no-stream");
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92 end
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93 return;
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94 end
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95 if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then
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96 cb_error(session, "invalid-top-level-element");
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97 end
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98
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99 stanza = st.stanza(name, attr);
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100 curr_tag = stanza;
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101 else -- we are inside a stanza, so add a tag
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102 attr.xmlns = nil;
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103 if curr_ns ~= stream_default_ns then
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104 attr.xmlns = curr_ns;
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105 end
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106 stanza:tag(name, attr);
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107 end
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108 end
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109 function xml_handlers:CharacterData(data)
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110 if stanza then
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111 t_insert(chardata, data);
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112 end
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113 end
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114 function xml_handlers:EndElement(tagname)
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115 local curr_ns,name = tagname:match(ns_pattern);
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116 if name == "" then
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117 curr_ns, name = "", curr_ns;
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118 end
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119 if stanza then
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120 if #chardata > 0 then
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121 -- We have some character data in the buffer
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122 stanza:text(t_concat(chardata));
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123 chardata = {};
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124 end
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125 -- Complete stanza
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126 if #stanza.last_add == 0 then
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127 if tagname ~= stream_error_tag then
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128 cb_handlestanza(session, stanza);
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129 else
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130 cb_error(session, "stream-error", stanza);
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131 end
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132 stanza = nil;
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133 else
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134 stanza:up();
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135 end
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136 else
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137 if tagname == stream_tag then
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138 if cb_streamclosed then
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139 cb_streamclosed(session);
148
4c0dcd245d34 s2s works! \o/ \o/
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140 end
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141 else
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142 cb_error(session, "parse-error", "unexpected-element-close", name);
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143 end
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144 stanza, chardata = nil, {};
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145 end
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146 end
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147 return xml_handlers;
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148 end
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149
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150 return init_xmlhandlers;