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615 | 1 | -- Prosody IM v0.2 |
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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 | |
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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; |
148 | 26 | local pairs = pairs; |
27 | local ipairs = ipairs; | |
28 | local type = type; | |
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 | |
145 | 38 | local default_log = require "util.logger".init("xmlhandlers"); |
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 | |
148 | 44 | local ns_prefixes = { |
45 | ["http://www.w3.org/XML/1998/namespace"] = "xml"; | |
46 | } | |
47 | ||
331 | 48 | function init_xmlhandlers(session, stream_callbacks) |
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49 | local ns_stack = { "" }; |
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50 | local curr_ns, name = ""; |
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51 | local curr_tag; |
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52 | local chardata = {}; |
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53 | local xml_handlers = {}; |
145 | 54 | local log = session.log or default_log; |
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55 | |
331 | 56 | local cb_streamopened = stream_callbacks.streamopened; |
57 | local cb_streamclosed = stream_callbacks.streamclosed; | |
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58 | local cb_error = stream_callbacks.error or function (session, e) error("XML stream error: "..tostring(e)); end; |
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59 | local cb_handlestanza = stream_callbacks.handlestanza; |
331 | 60 | |
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61 | local stream_tag = stream_callbacks.stream_tag; |
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62 | |
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63 | local stanza |
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64 | function xml_handlers:StartElement(tagname, attr) |
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65 | if stanza and #chardata > 0 then |
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66 | -- We have some character data in the buffer |
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67 | stanza:text(t_concat(chardata)); |
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68 | chardata = {}; |
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69 | end |
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70 | local curr_ns,name = tagname:match("^(.+)|([%w%-]+)$"); |
148 | 71 | if curr_ns ~= "jabber:server" then |
72 | attr.xmlns = curr_ns; | |
73 | end | |
74 | ||
75 | -- FIXME !!!!! | |
76 | for i, k in ipairs(attr) do | |
77 | if type(k) == "string" then | |
78 | local ns, nm = k:match("^([^|]+)|?([^|]-)$") | |
79 | if ns and nm then | |
80 | ns = ns_prefixes[ns]; | |
81 | if ns then | |
82 | attr[ns..":"..nm] = attr[k]; | |
83 | attr[i] = ns..":"..nm; | |
84 | attr[k] = nil; | |
85 | end | |
86 | end | |
87 | end | |
88 | end | |
145 | 89 | |
90 | if not stanza then --if we are not currently inside a stanza | |
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91 | if session.notopen then |
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92 | if tagname == stream_tag then |
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93 | if cb_streamopened then |
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94 | cb_streamopened(session, attr); |
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95 | end |
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96 | else |
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97 | -- Garbage before stream? |
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98 | cb_error(session, "no-stream"); |
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99 | end |
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100 | return; |
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101 | end |
38 | 102 | if curr_ns == "jabber:client" and name ~= "iq" and name ~= "presence" and name ~= "message" then |
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103 | cb_error(session, "invalid-top-level-element"); |
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104 | end |
145 | 105 | |
331 | 106 | stanza = st.stanza(name, attr); |
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107 | curr_tag = stanza; |
145 | 108 | else -- we are inside a stanza, so add a tag |
148 | 109 | attr.xmlns = nil; |
110 | if curr_ns ~= "jabber:server" and curr_ns ~= "jabber:client" then | |
111 | attr.xmlns = curr_ns; | |
112 | end | |
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113 | stanza:tag(name, attr); |
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114 | end |
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115 | end |
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116 | function xml_handlers:CharacterData(data) |
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117 | if stanza then |
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118 | t_insert(chardata, data); |
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119 | end |
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120 | end |
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121 | function xml_handlers:EndElement(tagname) |
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122 | curr_ns,name = tagname:match("^(.+)|([%w%-]+)$"); |
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123 | if (not stanza) or (#stanza.last_add > 0 and name ~= stanza.last_add[#stanza.last_add].name) then |
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124 | if tagname == stream_tag then |
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125 | if cb_streamclosed then |
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126 | cb_streamclosed(session); |
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127 | end |
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128 | return; |
145 | 129 | elseif name == "error" then |
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130 | cb_error(session, "stream-error", stanza); |
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131 | else |
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132 | cb_error(session, "parse-error", "unexpected-element-close", name); |
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133 | end |
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134 | end |
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135 | if stanza and #chardata > 0 then |
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136 | -- We have some character data in the buffer |
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137 | stanza:text(t_concat(chardata)); |
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138 | chardata = {}; |
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139 | end |
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140 | -- Complete stanza |
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141 | if #stanza.last_add == 0 then |
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142 | cb_handlestanza(session, stanza); |
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143 | stanza = nil; |
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144 | else |
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145 | stanza:up(); |
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146 | end |
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147 | end |
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148 | return xml_handlers; |
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149 | end |
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150 | |
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151 | return init_xmlhandlers; |