Software / code / prosody
Annotate
util/stanza.lua @ 562:04ee161d936b
Comment out debug logging for now
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Fri, 05 Dec 2008 19:22:34 +0000 |
| parent | 519:cccd610a0ef9 |
| child | 613:6c09127b50fb |
| child | 626:cf1d26fd4d6f |
| rev | line source |
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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 |
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21 local t_insert = table.insert; |
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22 local t_remove = table.remove; |
| 23 | 23 local s_format = string.format; |
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24 local tostring = tostring; |
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25 local setmetatable = setmetatable; |
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26 local pairs = pairs; |
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27 local ipairs = ipairs; |
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28 local type = type; |
| 145 | 29 local next = next; |
| 30 local print = print; | |
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31 local unpack = unpack; |
| 4 | 32 local s_gsub = string.gsub; |
| 262 | 33 local os = os; |
| 145 | 34 |
| 262 | 35 local do_pretty_printing = not os.getenv("WINDIR"); |
| 36 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring; | |
| 37 | |
| 145 | 38 local log = require "util.logger".init("stanza"); |
| 39 | |
| 0 | 40 module "stanza" |
| 41 | |
| 42 stanza_mt = {}; | |
| 43 stanza_mt.__index = stanza_mt; | |
| 44 | |
| 45 function stanza(name, attr) | |
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46 local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}}; |
| 0 | 47 return setmetatable(stanza, stanza_mt); |
| 48 end | |
| 49 | |
| 50 function stanza_mt:query(xmlns) | |
| 51 return self:tag("query", { xmlns = xmlns }); | |
| 52 end | |
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53 |
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54 function stanza_mt:body(text, attr) |
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55 return self:tag("body", attr):text(text); |
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56 end |
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57 |
| 0 | 58 function stanza_mt:tag(name, attrs) |
| 59 local s = stanza(name, attrs); | |
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60 (self.last_add[#self.last_add] or self):add_direct_child(s); |
| 0 | 61 t_insert(self.last_add, s); |
| 62 return self; | |
| 63 end | |
| 64 | |
| 65 function stanza_mt:text(text) | |
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66 (self.last_add[#self.last_add] or self):add_direct_child(text); |
| 0 | 67 return self; |
| 68 end | |
| 69 | |
| 70 function stanza_mt:up() | |
| 71 t_remove(self.last_add); | |
| 72 return self; | |
| 73 end | |
| 74 | |
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75 function stanza_mt:add_direct_child(child) |
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76 if type(child) == "table" then |
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77 t_insert(self.tags, child); |
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78 end |
| 0 | 79 t_insert(self, child); |
| 80 end | |
| 81 | |
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82 function stanza_mt:add_child(child) |
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83 (self.last_add[#self.last_add] or self):add_direct_child(child); |
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84 return self; |
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85 end |
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86 |
| 0 | 87 function stanza_mt:child_with_name(name) |
| 88 for _, child in ipairs(self) do | |
| 89 if child.name == name then return child; end | |
| 90 end | |
| 91 end | |
| 92 | |
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93 function stanza_mt:children() |
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94 local i = 0; |
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95 return function (a) |
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96 i = i + 1 |
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97 local v = a[i] |
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98 if v then return v; end |
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99 end, self, i; |
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100 |
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101 end |
| 2 | 102 function stanza_mt:childtags() |
| 103 local i = 0; | |
| 104 return function (a) | |
| 105 i = i + 1 | |
| 106 local v = self.tags[i] | |
| 107 if v then return v; end | |
| 108 end, self.tags[1], i; | |
| 109 | |
| 110 end | |
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111 |
| 4 | 112 do |
| 113 local xml_entities = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" }; | |
| 114 function xml_escape(s) return s_gsub(s, "['&<>\"]", xml_entities); end | |
| 115 end | |
| 116 | |
| 117 local xml_escape = xml_escape; | |
| 118 | |
| 0 | 119 function stanza_mt.__tostring(t) |
| 120 local children_text = ""; | |
| 121 for n, child in ipairs(t) do | |
| 4 | 122 if type(child) == "string" then |
| 123 children_text = children_text .. xml_escape(child); | |
| 124 else | |
| 125 children_text = children_text .. tostring(child); | |
| 126 end | |
| 0 | 127 end |
| 128 | |
| 129 local attr_string = ""; | |
| 130 if t.attr then | |
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131 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 |
| 0 | 132 end |
| 23 | 133 return s_format("<%s%s>%s</%s>", t.name, attr_string, children_text, t.name); |
| 0 | 134 end |
| 135 | |
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136 function stanza_mt.top_tag(t) |
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137 local attr_string = ""; |
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138 if t.attr then |
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139 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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140 end |
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141 return s_format("<%s%s>", t.name, attr_string); |
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142 end |
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143 |
| 0 | 144 function stanza_mt.__add(s1, s2) |
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145 return s1:add_direct_child(s2); |
| 0 | 146 end |
| 147 | |
| 148 | |
| 149 do | |
| 150 local id = 0; | |
| 151 function new_id() | |
| 152 id = id + 1; | |
| 153 return "lx"..id; | |
| 154 end | |
| 155 end | |
| 156 | |
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157 function preserialize(stanza) |
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158 local s = { name = stanza.name, attr = stanza.attr }; |
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159 for _, child in ipairs(stanza) do |
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160 if type(child) == "table" then |
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161 t_insert(s, preserialize(child)); |
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162 else |
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163 t_insert(s, child); |
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164 end |
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165 end |
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166 return s; |
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167 end |
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168 |
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169 function deserialize(stanza) |
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170 -- Set metatable |
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171 if stanza then |
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172 setmetatable(stanza, stanza_mt); |
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173 for _, child in ipairs(stanza) do |
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174 if type(child) == "table" then |
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175 deserialize(child); |
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176 end |
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177 end |
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178 if not stanza.tags then |
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179 -- Rebuild tags |
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180 local tags = {}; |
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181 for _, child in ipairs(stanza) do |
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182 if type(child) == "table" then |
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183 t_insert(tags, child); |
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184 end |
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185 end |
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186 stanza.tags = tags; |
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187 end |
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188 end |
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189 |
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190 return stanza; |
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191 end |
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192 |
| 0 | 193 function message(attr, body) |
| 194 if not body then | |
| 195 return stanza("message", attr); | |
| 196 else | |
| 197 return stanza("message", attr):tag("body"):text(body); | |
| 198 end | |
| 199 end | |
| 200 function iq(attr) | |
| 201 if attr and not attr.id then attr.id = new_id(); end | |
| 202 return stanza("iq", attr or { id = new_id() }); | |
| 203 end | |
| 204 | |
| 205 function reply(orig) | |
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206 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 | 207 end |
| 208 | |
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209 function error_reply(orig, type, condition, message, clone) |
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210 local t = reply(orig); |
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211 t.attr.type = "error"; |
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212 -- TODO use clone |
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213 t:tag("error", {type = type}) |
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214 :tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up(); |
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215 if (message) then t:tag("text"):text(message):up(); end |
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216 return t; -- stanza ready for adding app-specific errors |
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217 end |
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218 |
| 0 | 219 function presence(attr) |
| 220 return stanza("presence", attr); | |
| 221 end | |
| 222 | |
| 262 | 223 if do_pretty_printing then |
| 224 local style_attrk = getstyle("yellow"); | |
| 225 local style_attrv = getstyle("red"); | |
| 226 local style_tagname = getstyle("red"); | |
| 227 local style_punc = getstyle("magenta"); | |
| 228 | |
| 229 local attr_format = " "..getstring(style_attrk, "%s")..getstring(style_punc, "=")..getstring(style_attrv, "'%s'"); | |
| 230 local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">"); | |
| 231 --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, ">"); | |
| 232 local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">"); | |
| 233 function stanza_mt.pretty_print(t) | |
| 234 local children_text = ""; | |
| 235 for n, child in ipairs(t) do | |
| 236 if type(child) == "string" then | |
| 237 children_text = children_text .. xml_escape(child); | |
| 238 else | |
| 239 children_text = children_text .. child:pretty_print(); | |
| 240 end | |
| 241 end | |
| 242 | |
| 243 local attr_string = ""; | |
| 244 if t.attr then | |
| 245 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 | |
| 246 end | |
| 247 return s_format(tag_format, t.name, attr_string, children_text, t.name); | |
| 248 end | |
| 249 | |
| 250 function stanza_mt.pretty_top_tag(t) | |
| 251 local attr_string = ""; | |
| 252 if t.attr then | |
| 253 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 | |
| 254 end | |
| 255 return s_format(top_tag_format, t.name, attr_string); | |
| 256 end | |
| 257 else | |
| 258 -- Sorry, fresh out of colours for you guys ;) | |
| 259 stanza_mt.pretty_print = stanza_mt.__tostring; | |
| 260 stanza_mt.pretty_top_tag = stanza_mt.top_tag; | |
| 261 end | |
| 262 | |
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263 return _M; |