prosody
cccd610a0ef9
core/xmlhandlers.lua

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core/xmlhandlers.lua @ 519:cccd610a0ef9

Insert copyright/license headers
author Matthew Wild <mwild1@gmail.com>
date Wed, 03 Dec 2008 14:39:07 +0000
parent 355:e25c8d91b37f
child 545:60002993be04
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rev   line source
519
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1 -- Prosody IM v0.1
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2 -- Copyright (C) 2008 Matthew Wild
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3 -- Copyright (C) 2008 Waqas Hussain
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4 --
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5 -- This program is free software; you can redistribute it and/or
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6 -- modify it under the terms of the GNU General Public License
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7 -- as published by the Free Software Foundation; either version 2
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8 -- of the License, or (at your option) any later version.
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9 --
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10 -- This program is distributed in the hope that it will be useful,
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11 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 -- GNU General Public License for more details.
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14 --
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15 -- You should have received a copy of the GNU General Public License
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16 -- along with this program; if not, write to the Free Software
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17 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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18 --
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19
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20
1
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21
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22 require "util.stanza"
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23
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24 local st = stanza;
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25 local tostring = tostring;
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26 local pairs = pairs;
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27 local ipairs = ipairs;
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28 local type = type;
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29 local print = print;
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30 local format = string.format;
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31 local m_random = math.random;
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32 local t_insert = table.insert;
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33 local t_remove = table.remove;
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34 local t_concat = table.concat;
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35 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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36 local sm_destroy_session = import("core.sessionmanager", "destroy_session");
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37
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38 local default_log = require "util.logger".init("xmlhandlers");
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39
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40 local error = error;
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41
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42 module "xmlhandlers"
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43
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44 local ns_prefixes = {
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45 ["http://www.w3.org/XML/1998/namespace"] = "xml";
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46 }
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47
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48 function init_xmlhandlers(session, stream_callbacks)
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49 local ns_stack = { "" };
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50 local curr_ns = "";
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51 local curr_tag;
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52 local chardata = {};
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53 local xml_handlers = {};
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54 local log = session.log or default_log;
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55 --local print = function (...) log("info", "xmlhandlers", t_concatall({...}, "\t")); end
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56
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57 local send = session.send;
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58
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59 local cb_streamopened = stream_callbacks.streamopened;
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60 local cb_streamclosed = stream_callbacks.streamclosed;
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61
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62 local stanza
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63 function xml_handlers:StartElement(name, attr)
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64 if stanza and #chardata > 0 then
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65 -- We have some character data in the buffer
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66 stanza:text(t_concat(chardata));
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67 chardata = {};
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68 end
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69 curr_ns,name = name:match("^(.+)|([%w%-]+)$");
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70 if curr_ns ~= "jabber:server" then
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71 attr.xmlns = curr_ns;
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72 end
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73
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74 -- FIXME !!!!!
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75 for i, k in ipairs(attr) do
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76 if type(k) == "string" then
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77 local ns, nm = k:match("^([^|]+)|?([^|]-)$")
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78 if ns and nm then
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79 ns = ns_prefixes[ns];
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80 if ns then
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81 attr[ns..":"..nm] = attr[k];
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82 attr[i] = ns..":"..nm;
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83 attr[k] = nil;
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84 end
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85 end
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86 end
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87 end
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88
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89 if not stanza then --if we are not currently inside a stanza
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90 if session.notopen then
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91 if name == "stream" then
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92 if cb_streamopened then
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93 cb_streamopened(session, attr);
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94 end
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95 return;
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96 end
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97 error("Client failed to open stream successfully");
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98 end
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99 if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then
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100 error("Client sent invalid top-level stanza");
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101 end
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102
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103 stanza = st.stanza(name, attr);
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104 curr_tag = stanza;
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105 else -- we are inside a stanza, so add a tag
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106 attr.xmlns = nil;
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107 if curr_ns ~= "jabber:server" and curr_ns ~= "jabber:client" then
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108 attr.xmlns = curr_ns;
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109 end
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110 stanza:tag(name, attr);
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111 end
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112 end
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113 function xml_handlers:CharacterData(data)
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114 if stanza then
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115 t_insert(chardata, data);
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116 end
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117 end
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118 function xml_handlers:EndElement(name)
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119 curr_ns,name = name:match("^(.+)|([%w%-]+)$");
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120 if (not stanza) or (#stanza.last_add > 0 and name ~= stanza.last_add[#stanza.last_add].name) then
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121 if name == "stream" then
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122 log("debug", "Stream closed");
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123 if cb_streamclosed then
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124 cb_streamclosed(session);
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125 end
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126 return;
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127 elseif name == "error" then
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128 error("Stream error: "..tostring(name)..": "..tostring(stanza));
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129 else
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130 error("XML parse error in client stream with element: "..name);
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131 end
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132 end
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133 if stanza and #chardata > 0 then
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134 -- We have some character data in the buffer
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135 stanza:text(t_concat(chardata));
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136 chardata = {};
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137 end
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138 -- Complete stanza
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139 if #stanza.last_add == 0 then
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140 session.stanza_dispatch(stanza);
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141 stanza = nil;
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142 else
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143 stanza:up();
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144 end
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145 end
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146 return xml_handlers;
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147 end
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148
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149 return init_xmlhandlers;