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net.dns: Add 'force' parameter to resolver:feed() to force decoding a packet even if it doesn't match an outstanding request
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1 | -- Prosody IM |
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2 | -- Copyright (C) 2008-2010 Matthew Wild |
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3 | -- Copyright (C) 2008-2010 Waqas Hussain |
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4 | -- |
758 | 5 | -- This project is MIT/X11 licensed. Please see the |
6 | -- COPYING file in the source package for more information. | |
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7 | -- |
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8 | |
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util.stanza: Don't add xmlns to tags when serializing if same as the parent tag's xmlns. Should hopefully shut up Gajim once and for all :)
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9 | |
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10 | local t_insert = table.insert; |
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11 | local t_concat = table.concat; |
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12 | local t_remove = table.remove; |
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13 | local t_concat = table.concat; |
23 | 14 | local s_format = string.format; |
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15 | local s_match = string.match; |
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16 | local tostring = tostring; |
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17 | local setmetatable = setmetatable; |
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18 | local getmetatable = getmetatable; |
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19 | local pairs = pairs; |
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20 | local ipairs = ipairs; |
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21 | local type = type; |
145 | 22 | local next = next; |
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23 | local print = print; |
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Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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24 | local unpack = unpack; |
4 | 25 | local s_gsub = string.gsub; |
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26 | local s_char = string.char; |
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27 | local s_find = string.find; |
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28 | local os = os; |
145 | 29 | |
262 | 30 | local do_pretty_printing = not os.getenv("WINDIR"); |
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31 | local getstyle, getstring; |
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32 | if do_pretty_printing then |
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33 | local ok, termcolours = pcall(require, "util.termcolours"); |
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34 | if ok then |
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35 | getstyle, getstring = termcolours.getstyle, termcolours.getstring; |
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36 | else |
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37 | do_pretty_printing = nil; |
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38 | end |
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39 | end |
262 | 40 | |
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41 | local xmlns_stanzas = "urn:ietf:params:xml:ns:xmpp-stanzas"; |
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42 | |
0 | 43 | module "stanza" |
44 | ||
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45 | stanza_mt = { __type = "stanza" }; |
0 | 46 | stanza_mt.__index = stanza_mt; |
47 | ||
48 | function stanza(name, attr) | |
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49 | local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}}; |
0 | 50 | return setmetatable(stanza, stanza_mt); |
51 | end | |
52 | ||
53 | function stanza_mt:query(xmlns) | |
54 | return self:tag("query", { xmlns = xmlns }); | |
55 | end | |
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56 | |
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57 | function stanza_mt:body(text, attr) |
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58 | return self:tag("body", attr):text(text); |
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59 | end |
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60 | |
0 | 61 | function stanza_mt:tag(name, attrs) |
62 | local s = stanza(name, attrs); | |
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63 | (self.last_add[#self.last_add] or self):add_direct_child(s); |
0 | 64 | t_insert(self.last_add, s); |
65 | return self; | |
66 | end | |
67 | ||
68 | function stanza_mt:text(text) | |
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69 | (self.last_add[#self.last_add] or self):add_direct_child(text); |
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70 | return self; |
0 | 71 | end |
72 | ||
73 | function stanza_mt:up() | |
74 | t_remove(self.last_add); | |
75 | return self; | |
76 | end | |
77 | ||
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78 | function stanza_mt:reset() |
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79 | local last_add = self.last_add; |
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80 | for i = 1,#last_add do |
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81 | last_add[i] = nil; |
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82 | end |
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83 | return self; |
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84 | end |
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85 | |
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86 | function stanza_mt:add_direct_child(child) |
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87 | if type(child) == "table" then |
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88 | t_insert(self.tags, child); |
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89 | end |
0 | 90 | t_insert(self, child); |
91 | end | |
92 | ||
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93 | function stanza_mt:add_child(child) |
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94 | (self.last_add[#self.last_add] or self):add_direct_child(child); |
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95 | return self; |
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96 | end |
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97 | |
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98 | function stanza_mt:get_child(name, xmlns) |
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99 | for _, child in ipairs(self.tags) do |
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100 | if (not name or child.name == name) |
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101 | and ((not xmlns and self.attr.xmlns == child.attr.xmlns) |
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102 | or child.attr.xmlns == xmlns) then |
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103 | |
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104 | return child; |
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105 | end |
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106 | end |
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107 | end |
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108 | |
0 | 109 | function stanza_mt:child_with_name(name) |
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110 | for _, child in ipairs(self.tags) do |
0 | 111 | if child.name == name then return child; end |
112 | end | |
113 | end | |
114 | ||
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115 | function stanza_mt:child_with_ns(ns) |
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116 | for _, child in ipairs(self.tags) do |
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117 | if child.attr.xmlns == ns then return child; end |
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118 | end |
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119 | end |
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120 | |
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121 | function stanza_mt:children() |
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122 | local i = 0; |
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123 | return function (a) |
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124 | i = i + 1 |
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125 | return a[i]; |
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126 | end, self, i; |
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127 | end |
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128 | |
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129 | function stanza_mt:matching_tags(name, xmlns) |
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130 | xmlns = xmlns or self.attr.xmlns; |
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131 | local tags = self.tags; |
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132 | local start_i, max_i = 1, #tags; |
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133 | return function () |
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134 | for i=start_i,max_i do |
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135 | v = tags[i]; |
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136 | if (not name or v.name == name) |
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137 | and (not xmlns or xmlns == v.attr.xmlns) then |
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138 | start_i = i+1; |
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139 | return v; |
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140 | end |
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141 | end |
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142 | end, tags, i; |
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143 | end |
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144 | |
2 | 145 | function stanza_mt:childtags() |
146 | local i = 0; | |
147 | return function (a) | |
148 | i = i + 1 | |
149 | local v = self.tags[i] | |
150 | if v then return v; end | |
151 | end, self.tags[1], i; | |
152 | end | |
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153 | |
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154 | function stanza_mt:maptags(callback) |
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155 | local tags, curr_tag = self.tags, 1; |
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156 | local n_children, n_tags = #self, #tags; |
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157 | |
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158 | local i = 1; |
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159 | while curr_tag <= n_tags do |
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160 | if self[i] == tags[curr_tag] then |
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161 | local ret = callback(self[i]); |
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162 | if ret == nil then |
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163 | t_remove(self, i); |
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164 | t_remove(tags, curr_tag); |
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165 | n_children = n_children - 1; |
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166 | n_tags = n_tags - 1; |
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167 | else |
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168 | self[i] = ret; |
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169 | tags[i] = ret; |
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170 | end |
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171 | i = i + 1; |
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172 | curr_tag = curr_tag + 1; |
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173 | end |
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174 | end |
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175 | return self; |
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176 | end |
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177 | |
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178 | local xml_escape |
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179 | do |
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180 | local escape_table = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" }; |
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181 | function xml_escape(str) return (s_gsub(str, "['&<>\"]", escape_table)); end |
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182 | _M.xml_escape = xml_escape; |
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183 | end |
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184 | |
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185 | local function _dostring(t, buf, self, xml_escape, parentns) |
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186 | local nsid = 0; |
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187 | local name = t.name |
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188 | t_insert(buf, "<"..name); |
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189 | for k, v in pairs(t.attr) do |
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190 | if s_find(k, "\1", 1, true) then |
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191 | local ns, attrk = s_match(k, "^([^\1]*)\1?(.*)$"); |
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192 | nsid = nsid + 1; |
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193 | t_insert(buf, " xmlns:ns"..nsid.."='"..xml_escape(ns).."' ".."ns"..nsid..":"..attrk.."='"..xml_escape(v).."'"); |
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194 | elseif not(k == "xmlns" and v == parentns) then |
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195 | t_insert(buf, " "..k.."='"..xml_escape(v).."'"); |
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196 | end |
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197 | end |
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198 | local len = #t; |
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199 | if len == 0 then |
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200 | t_insert(buf, "/>"); |
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201 | else |
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202 | t_insert(buf, ">"); |
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203 | for n=1,len do |
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204 | local child = t[n]; |
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205 | if child.name then |
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206 | self(child, buf, self, xml_escape, t.attr.xmlns); |
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207 | else |
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208 | t_insert(buf, xml_escape(child)); |
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209 | end |
4 | 210 | end |
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211 | t_insert(buf, "</"..name..">"); |
0 | 212 | end |
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213 | end |
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214 | function stanza_mt.__tostring(t) |
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215 | local buf = {}; |
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216 | _dostring(t, buf, _dostring, xml_escape, nil); |
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217 | return t_concat(buf); |
0 | 218 | end |
219 | ||
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220 | function stanza_mt.top_tag(t) |
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221 | local attr_string = ""; |
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222 | if t.attr then |
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223 | for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(" %s='%s'", k, xml_escape(tostring(v))); end end |
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224 | end |
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225 | return s_format("<%s%s>", t.name, attr_string); |
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226 | end |
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227 | |
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228 | function stanza_mt.get_text(t) |
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229 | if #t.tags == 0 then |
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230 | return t_concat(t); |
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231 | end |
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232 | end |
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233 | |
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234 | function stanza_mt.get_error(stanza) |
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235 | local type, condition, text; |
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236 | |
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237 | local error_tag = stanza:get_child("error"); |
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238 | if not error_tag then |
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239 | return nil, nil, nil; |
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240 | end |
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241 | type = error_tag.attr.type; |
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242 | |
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243 | for child in error_tag:children() do |
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244 | if child.attr.xmlns == xmlns_stanzas then |
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245 | if not text and child.name == "text" then |
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246 | text = child:get_text(); |
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247 | elseif not condition then |
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248 | condition = child.name; |
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249 | end |
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250 | if condition and text then |
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251 | break; |
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252 | end |
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253 | end |
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254 | end |
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255 | return type, condition or "undefined-condition", text or ""; |
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256 | end |
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257 | |
0 | 258 | function stanza_mt.__add(s1, s2) |
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259 | return s1:add_direct_child(s2); |
0 | 260 | end |
261 | ||
262 | ||
263 | do | |
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264 | local id = 0; |
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265 | function new_id() |
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266 | id = id + 1; |
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267 | return "lx"..id; |
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268 | end |
0 | 269 | end |
270 | ||
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271 | function preserialize(stanza) |
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272 | local s = { name = stanza.name, attr = stanza.attr }; |
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273 | for _, child in ipairs(stanza) do |
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274 | if type(child) == "table" then |
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275 | t_insert(s, preserialize(child)); |
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276 | else |
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277 | t_insert(s, child); |
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278 | end |
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279 | end |
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280 | return s; |
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281 | end |
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282 | |
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283 | function deserialize(stanza) |
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284 | -- Set metatable |
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285 | if stanza then |
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286 | local attr = stanza.attr; |
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287 | for i=1,#attr do attr[i] = nil; end |
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288 | local attrx = {}; |
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289 | for att in pairs(attr) do |
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290 | if s_find(att, "|", 1, true) and not s_find(att, "\1", 1, true) then |
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291 | local ns,na = s_match(att, "^([^|]+)|(.+)$"); |
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292 | attrx[ns.."\1"..na] = attr[att]; |
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293 | attr[att] = nil; |
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294 | end |
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295 | end |
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296 | for a,v in pairs(attrx) do |
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297 | attr[a] = v; |
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298 | end |
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299 | setmetatable(stanza, stanza_mt); |
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300 | for _, child in ipairs(stanza) do |
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301 | if type(child) == "table" then |
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302 | deserialize(child); |
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303 | end |
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304 | end |
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305 | if not stanza.tags then |
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306 | -- Rebuild tags |
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307 | local tags = {}; |
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308 | for _, child in ipairs(stanza) do |
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309 | if type(child) == "table" then |
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310 | t_insert(tags, child); |
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311 | end |
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312 | end |
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313 | stanza.tags = tags; |
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314 | if not stanza.last_add then |
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315 | stanza.last_add = {}; |
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316 | end |
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317 | end |
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318 | end |
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319 | |
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320 | return stanza; |
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321 | end |
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322 | |
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323 | function clone(stanza) |
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324 | local lookup_table = {}; |
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325 | local function _copy(object) |
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326 | if type(object) ~= "table" then |
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327 | return object; |
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328 | elseif lookup_table[object] then |
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329 | return lookup_table[object]; |
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330 | end |
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331 | local new_table = {}; |
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332 | lookup_table[object] = new_table; |
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333 | for index, value in pairs(object) do |
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334 | new_table[_copy(index)] = _copy(value); |
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335 | end |
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336 | return setmetatable(new_table, getmetatable(object)); |
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337 | end |
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338 | |
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339 | return _copy(stanza) |
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340 | end |
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341 | |
0 | 342 | function message(attr, body) |
343 | if not body then | |
344 | return stanza("message", attr); | |
345 | else | |
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346 | return stanza("message", attr):tag("body"):text(body):up(); |
0 | 347 | end |
348 | end | |
349 | function iq(attr) | |
350 | if attr and not attr.id then attr.id = new_id(); end | |
351 | return stanza("iq", attr or { id = new_id() }); | |
352 | end | |
353 | ||
354 | function reply(orig) | |
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355 | return stanza(orig.name, orig.attr and { to = orig.attr.from, from = orig.attr.to, id = orig.attr.id, type = ((orig.name == "iq" and "result") or orig.attr.type) }); |
0 | 356 | end |
357 | ||
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358 | do |
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359 | local xmpp_stanzas_attr = { xmlns = xmlns_stanzas }; |
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360 | function error_reply(orig, type, condition, message) |
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361 | local t = reply(orig); |
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362 | t.attr.type = "error"; |
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363 | t:tag("error", {type = type}) --COMPAT: Some day xmlns:stanzas goes here |
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364 | :tag(condition, xmpp_stanzas_attr):up(); |
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365 | if (message) then t:tag("text", xmpp_stanzas_attr):text(message):up(); end |
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366 | return t; -- stanza ready for adding app-specific errors |
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367 | end |
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368 | end |
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369 | |
0 | 370 | function presence(attr) |
371 | return stanza("presence", attr); | |
372 | end | |
373 | ||
262 | 374 | if do_pretty_printing then |
375 | local style_attrk = getstyle("yellow"); | |
376 | local style_attrv = getstyle("red"); | |
377 | local style_tagname = getstyle("red"); | |
378 | local style_punc = getstyle("magenta"); | |
379 | ||
380 | local attr_format = " "..getstring(style_attrk, "%s")..getstring(style_punc, "=")..getstring(style_attrv, "'%s'"); | |
381 | local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">"); | |
382 | --local tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">").."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">"); | |
383 | local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">"); | |
384 | function stanza_mt.pretty_print(t) | |
385 | local children_text = ""; | |
386 | for n, child in ipairs(t) do | |
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387 | if type(child) == "string" then |
262 | 388 | children_text = children_text .. xml_escape(child); |
389 | else | |
390 | children_text = children_text .. child:pretty_print(); | |
391 | end | |
392 | end | |
393 | ||
394 | local attr_string = ""; | |
395 | if t.attr then | |
396 | for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(attr_format, k, tostring(v)); end end | |
397 | end | |
398 | return s_format(tag_format, t.name, attr_string, children_text, t.name); | |
399 | end | |
400 | ||
401 | function stanza_mt.pretty_top_tag(t) | |
402 | local attr_string = ""; | |
403 | if t.attr then | |
404 | for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(attr_format, k, tostring(v)); end end | |
405 | end | |
406 | return s_format(top_tag_format, t.name, attr_string); | |
407 | end | |
408 | else | |
409 | -- Sorry, fresh out of colours for you guys ;) | |
410 | stanza_mt.pretty_print = stanza_mt.__tostring; | |
411 | stanza_mt.pretty_top_tag = stanza_mt.top_tag; | |
412 | end | |
413 | ||
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414 | return _M; |