Sat, 15 Nov 2008 08:38:25 +0500
Log how many queued stanzas we send
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1 | local t_insert = table.insert; |
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2 | local t_remove = table.remove; |
23 | 3 | local s_format = string.format; |
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4 | local tostring = tostring; |
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5 | local setmetatable = setmetatable; |
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6 | local pairs = pairs; |
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7 | local ipairs = ipairs; |
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8 | local type = type; |
145 | 9 | local next = next; |
10 | local print = print; | |
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11 | local unpack = unpack; |
4 | 12 | local s_gsub = string.gsub; |
262 | 13 | local os = os; |
145 | 14 | |
262 | 15 | local do_pretty_printing = not os.getenv("WINDIR"); |
16 | local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring; | |
17 | ||
145 | 18 | local log = require "util.logger".init("stanza"); |
19 | ||
0 | 20 | module "stanza" |
21 | ||
22 | stanza_mt = {}; | |
23 | stanza_mt.__index = stanza_mt; | |
24 | ||
25 | function stanza(name, attr) | |
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26 | local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}}; |
0 | 27 | return setmetatable(stanza, stanza_mt); |
28 | end | |
29 | ||
30 | function stanza_mt:query(xmlns) | |
31 | return self:tag("query", { xmlns = xmlns }); | |
32 | end | |
33 | function stanza_mt:tag(name, attrs) | |
34 | local s = stanza(name, attrs); | |
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35 | (self.last_add[#self.last_add] or self):add_direct_child(s); |
0 | 36 | t_insert(self.last_add, s); |
37 | return self; | |
38 | end | |
39 | ||
40 | function stanza_mt:text(text) | |
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41 | (self.last_add[#self.last_add] or self):add_direct_child(text); |
0 | 42 | return self; |
43 | end | |
44 | ||
45 | function stanza_mt:up() | |
46 | t_remove(self.last_add); | |
47 | return self; | |
48 | end | |
49 | ||
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50 | function stanza_mt:add_direct_child(child) |
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51 | if type(child) == "table" then |
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52 | t_insert(self.tags, child); |
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53 | end |
0 | 54 | t_insert(self, child); |
55 | end | |
56 | ||
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57 | function stanza_mt:add_child(child) |
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58 | (self.last_add[#self.last_add] or self):add_direct_child(child); |
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59 | return self; |
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60 | end |
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61 | |
0 | 62 | function stanza_mt:child_with_name(name) |
63 | for _, child in ipairs(self) do | |
64 | if child.name == name then return child; end | |
65 | end | |
66 | end | |
67 | ||
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68 | function stanza_mt:children() |
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69 | local i = 0; |
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70 | return function (a) |
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71 | i = i + 1 |
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72 | local v = a[i] |
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73 | if v then return v; end |
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74 | end, self, i; |
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75 | |
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76 | end |
2 | 77 | function stanza_mt:childtags() |
78 | local i = 0; | |
79 | return function (a) | |
80 | i = i + 1 | |
81 | local v = self.tags[i] | |
82 | if v then return v; end | |
83 | end, self.tags[1], i; | |
84 | ||
85 | end | |
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86 | |
4 | 87 | do |
88 | local xml_entities = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" }; | |
89 | function xml_escape(s) return s_gsub(s, "['&<>\"]", xml_entities); end | |
90 | end | |
91 | ||
92 | local xml_escape = xml_escape; | |
93 | ||
0 | 94 | function stanza_mt.__tostring(t) |
95 | local children_text = ""; | |
96 | for n, child in ipairs(t) do | |
4 | 97 | if type(child) == "string" then |
98 | children_text = children_text .. xml_escape(child); | |
99 | else | |
100 | children_text = children_text .. tostring(child); | |
101 | end | |
0 | 102 | end |
103 | ||
104 | local attr_string = ""; | |
105 | if t.attr then | |
23 | 106 | for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(" %s='%s'", k, tostring(v)); end end |
0 | 107 | end |
23 | 108 | return s_format("<%s%s>%s</%s>", t.name, attr_string, children_text, t.name); |
0 | 109 | end |
110 | ||
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111 | function stanza_mt.top_tag(t) |
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112 | local attr_string = ""; |
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113 | if t.attr then |
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114 | for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(" %s='%s'", k, tostring(v)); end end |
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115 | end |
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116 | return s_format("<%s%s>", t.name, attr_string); |
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117 | end |
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118 | |
0 | 119 | function stanza_mt.__add(s1, s2) |
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120 | return s1:add_direct_child(s2); |
0 | 121 | end |
122 | ||
123 | ||
124 | do | |
125 | local id = 0; | |
126 | function new_id() | |
127 | id = id + 1; | |
128 | return "lx"..id; | |
129 | end | |
130 | end | |
131 | ||
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132 | function preserialize(stanza) |
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133 | local s = { name = stanza.name, attr = stanza.attr }; |
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134 | for _, child in ipairs(stanza) do |
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135 | if type(child) == "table" then |
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136 | t_insert(s, preserialize(child)); |
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137 | else |
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138 | t_insert(s, child); |
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139 | end |
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140 | end |
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141 | return s; |
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142 | end |
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143 | |
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144 | function deserialize(stanza) |
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145 | -- Set metatable |
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146 | if stanza then |
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147 | setmetatable(stanza, stanza_mt); |
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148 | for _, child in ipairs(stanza) do |
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149 | if type(child) == "table" then |
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150 | deserialize(child); |
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151 | end |
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152 | end |
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153 | if not stanza.tags then |
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154 | -- Rebuild tags |
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155 | local tags = {}; |
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156 | for _, child in ipairs(stanza) do |
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157 | if type(child) == "table" then |
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158 | t_insert(tags, child); |
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159 | end |
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160 | end |
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161 | stanza.tags = tags; |
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162 | end |
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163 | end |
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164 | |
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165 | return stanza; |
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166 | end |
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167 | |
0 | 168 | function message(attr, body) |
169 | if not body then | |
170 | return stanza("message", attr); | |
171 | else | |
172 | return stanza("message", attr):tag("body"):text(body); | |
173 | end | |
174 | end | |
175 | function iq(attr) | |
176 | if attr and not attr.id then attr.id = new_id(); end | |
177 | return stanza("iq", attr or { id = new_id() }); | |
178 | end | |
179 | ||
180 | function reply(orig) | |
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181 | 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 | 182 | end |
183 | ||
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184 | function error_reply(orig, type, condition, message, clone) |
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185 | local t = reply(orig); |
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186 | t.attr.type = "error"; |
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187 | -- TODO use clone |
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188 | t:tag("error", {type = type}) |
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189 | :tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up(); |
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190 | if (message) then t:tag("text"):text(message):up(); end |
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191 | return t; -- stanza ready for adding app-specific errors |
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192 | end |
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193 | |
0 | 194 | function presence(attr) |
195 | return stanza("presence", attr); | |
196 | end | |
197 | ||
262 | 198 | if do_pretty_printing then |
199 | local style_attrk = getstyle("yellow"); | |
200 | local style_attrv = getstyle("red"); | |
201 | local style_tagname = getstyle("red"); | |
202 | local style_punc = getstyle("magenta"); | |
203 | ||
204 | local attr_format = " "..getstring(style_attrk, "%s")..getstring(style_punc, "=")..getstring(style_attrv, "'%s'"); | |
205 | local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">"); | |
206 | --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, ">"); | |
207 | local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">"); | |
208 | function stanza_mt.pretty_print(t) | |
209 | local children_text = ""; | |
210 | for n, child in ipairs(t) do | |
211 | if type(child) == "string" then | |
212 | children_text = children_text .. xml_escape(child); | |
213 | else | |
214 | children_text = children_text .. child:pretty_print(); | |
215 | end | |
216 | end | |
217 | ||
218 | local attr_string = ""; | |
219 | if t.attr then | |
220 | 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 | |
221 | end | |
222 | return s_format(tag_format, t.name, attr_string, children_text, t.name); | |
223 | end | |
224 | ||
225 | function stanza_mt.pretty_top_tag(t) | |
226 | local attr_string = ""; | |
227 | if t.attr then | |
228 | 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 | |
229 | end | |
230 | return s_format(top_tag_format, t.name, attr_string); | |
231 | end | |
232 | else | |
233 | -- Sorry, fresh out of colours for you guys ;) | |
234 | stanza_mt.pretty_print = stanza_mt.__tostring; | |
235 | stanza_mt.pretty_top_tag = stanza_mt.top_tag; | |
236 | end | |
237 | ||
90
da468ed49a7b
Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
Matthew Wild <mwild1@gmail.com>
parents:
70
diff
changeset
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238 | return _M; |