prosody
0c62bed9d338
core/xmlhandlers.lua

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core/xmlhandlers.lua @ 2006:0c62bed9d338

MUC: Added support for reason messages in role and affiliation changes (e.g., reason for kick, etc).
author Waqas Hussain <waqas20@gmail.com>
date Sun, 18 Oct 2009 15:53:08 +0500
parent 1523:841d61be198f
child 2037:a919511c45ac
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 -- Prosody IM
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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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10
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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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29
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30 function init_xmlhandlers(session, stream_callbacks)
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31 local ns_stack = { "" };
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32 local curr_ns, name = "";
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33 local curr_tag;
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34 local chardata = {};
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35 local xml_handlers = {};
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36 local log = session.log or default_log;
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38 local cb_streamopened = stream_callbacks.streamopened;
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39 local cb_streamclosed = stream_callbacks.streamclosed;
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40 local cb_error = stream_callbacks.error or function (session, e) error("XML stream error: "..tostring(e)); end;
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41 local cb_handlestanza = stream_callbacks.handlestanza;
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42
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43 local stream_tag = stream_callbacks.stream_tag;
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44 local stream_default_ns = stream_callbacks.default_ns;
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45
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46 local stanza
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47 function xml_handlers:StartElement(tagname, attr)
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48 if stanza and #chardata > 0 then
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49 -- We have some character data in the buffer
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50 stanza:text(t_concat(chardata));
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51 chardata = {};
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52 end
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53 local curr_ns,name = tagname:match("^(.-)|?([^%|]-)$");
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54 if not name then
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55 curr_ns, name = "", curr_ns;
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56 end
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57
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58 if curr_ns ~= stream_default_ns then
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59 attr.xmlns = curr_ns;
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60 end
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61
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62 -- FIXME !!!!!
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63 for i=1,#attr do
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64 local k = attr[i];
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65 attr[i] = nil;
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66 local ns, nm = k:match("^([^|]+)|?([^|]-)$")
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67 if ns and nm then
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68 ns = ns_prefixes[ns];
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69 if ns then
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70 attr[ns..":"..nm] = attr[k];
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71 attr[k] = nil;
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72 end
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73 end
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74 end
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75
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76 if not stanza then --if we are not currently inside a stanza
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77 if session.notopen then
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78 if tagname == stream_tag then
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79 if cb_streamopened then
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80 cb_streamopened(session, attr);
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81 end
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82 else
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83 -- Garbage before stream?
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84 cb_error(session, "no-stream");
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85 end
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86 return;
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87 end
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88 if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then
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89 cb_error(session, "invalid-top-level-element");
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90 end
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91
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92 stanza = st.stanza(name, attr);
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93 curr_tag = stanza;
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94 else -- we are inside a stanza, so add a tag
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95 attr.xmlns = nil;
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96 if curr_ns ~= stream_default_ns then
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97 attr.xmlns = curr_ns;
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98 end
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99 stanza:tag(name, attr);
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100 end
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101 end
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102 function xml_handlers:CharacterData(data)
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103 if stanza then
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104 t_insert(chardata, data);
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105 end
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106 end
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107 function xml_handlers:EndElement(tagname)
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108 curr_ns,name = tagname:match("^(.-)|?([^%|]-)$");
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109 if not name then
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110 curr_ns, name = "", curr_ns;
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111 end
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112 if (not stanza) or (#stanza.last_add > 0 and name ~= stanza.last_add[#stanza.last_add].name) then
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113 if tagname == stream_tag then
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114 if cb_streamclosed then
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115 cb_streamclosed(session);
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116 end
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117 return;
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118 elseif name == "error" then
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119 cb_error(session, "stream-error", stanza);
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120 else
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121 cb_error(session, "parse-error", "unexpected-element-close", name);
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122 end
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123 end
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124 if #chardata > 0 then
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125 -- We have some character data in the buffer
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126 stanza:text(t_concat(chardata));
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127 chardata = {};
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128 end
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129 -- Complete stanza
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130 if #stanza.last_add == 0 then
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131 cb_handlestanza(session, stanza);
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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 end
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137 return xml_handlers;
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138 end
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139
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140 return init_xmlhandlers;