prosody
4c3f3d60a2f4
core/xmlhandlers.lua

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core/xmlhandlers.lua @ 956:4c3f3d60a2f4

util.dataforms: Set form type when generating a form
author Matthew Wild <mwild1@gmail.com>
date Sun, 05 Apr 2009 19:41:24 +0100
parent 899:b95368f199a1
child 1003:afae75e37ceb
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2c0b9e3c11c3 0.3->0.4
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1 -- Prosody IM v0.4
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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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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 type = type;
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18 local print = print;
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19 local format = string.format;
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20 local m_random = math.random;
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21 local t_insert = table.insert;
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22 local t_remove = table.remove;
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23 local t_concat = table.concat;
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24 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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25 local sm_destroy_session = import("core.sessionmanager", "destroy_session");
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27 local default_log = require "util.logger".init("xmlhandlers");
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28
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29 local error = error;
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30
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31 module "xmlhandlers"
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32
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33 local ns_prefixes = {
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34 ["http://www.w3.org/XML/1998/namespace"] = "xml";
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35 }
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36
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37 function init_xmlhandlers(session, stream_callbacks)
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38 local ns_stack = { "" };
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39 local curr_ns, name = "";
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40 local curr_tag;
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41 local chardata = {};
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42 local xml_handlers = {};
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43 local log = session.log or default_log;
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44
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45 local cb_streamopened = stream_callbacks.streamopened;
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46 local cb_streamclosed = stream_callbacks.streamclosed;
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47 local cb_error = stream_callbacks.error or function (session, e) error("XML stream error: "..tostring(e)); end;
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48 local cb_handlestanza = stream_callbacks.handlestanza;
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49
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50 local stream_tag = stream_callbacks.stream_tag;
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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("^(.+)|([%w%-]+)$");
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61 if curr_ns ~= stream_default_ns then
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62 attr.xmlns = curr_ns;
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63 end
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64
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65 -- FIXME !!!!!
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66 for i, k in ipairs(attr) do
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67 if type(k) == "string" then
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68 local ns, nm = k:match("^([^|]+)|?([^|]-)$")
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69 if ns and nm then
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70 ns = ns_prefixes[ns];
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71 if ns then
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72 attr[ns..":"..nm] = attr[k];
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73 attr[i] = ns..":"..nm;
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74 attr[k] = nil;
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75 end
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76 end
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77 end
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78 end
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79
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80 if not stanza then --if we are not currently inside a stanza
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81 if session.notopen then
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82 if tagname == stream_tag then
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83 if cb_streamopened then
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84 cb_streamopened(session, attr);
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85 end
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86 else
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87 -- Garbage before stream?
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88 cb_error(session, "no-stream");
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89 end
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90 return;
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91 end
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92 if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then
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93 cb_error(session, "invalid-top-level-element");
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94 end
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95
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96 stanza = st.stanza(name, attr);
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97 curr_tag = stanza;
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98 else -- we are inside a stanza, so add a tag
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99 attr.xmlns = nil;
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100 if curr_ns ~= stream_default_ns then
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101 attr.xmlns = curr_ns;
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102 end
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103 stanza:tag(name, attr);
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104 end
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105 end
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106 function xml_handlers:CharacterData(data)
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107 if stanza then
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108 t_insert(chardata, data);
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109 end
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110 end
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111 function xml_handlers:EndElement(tagname)
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112 curr_ns,name = tagname:match("^(.+)|([%w%-]+)$");
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113 if (not stanza) or (#stanza.last_add > 0 and name ~= stanza.last_add[#stanza.last_add].name) then
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114 if tagname == stream_tag then
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115 if cb_streamclosed then
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116 cb_streamclosed(session);
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117 end
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118 return;
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119 elseif name == "error" then
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120 cb_error(session, "stream-error", stanza);
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121 else
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122 cb_error(session, "parse-error", "unexpected-element-close", name);
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123 end
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124 end
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125 if stanza then
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126 if #chardata > 0 then
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127 -- We have some character data in the buffer
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128 stanza:text(t_concat(chardata));
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129 chardata = {};
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130 end
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131 -- Complete stanza
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132 if #stanza.last_add == 0 then
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133 cb_handlestanza(session, stanza);
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134 stanza = nil;
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135 else
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136 stanza:up();
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137 end
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138 end
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139 end
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140 return xml_handlers;
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141 end
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142
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143 return init_xmlhandlers;