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mod_rest/jsonmap.lib.lua @ 3877:562b34050561
mod_rest: Add basic support for XEP-0050: Ad-Hoc commands (no forms)
This allows calling simple commands like the one provided by mod_uptime
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Tue, 04 Feb 2020 21:49:14 +0100 |
| parent | 3875:93f71ab6cb00 |
| child | 3878:9a3dfe0bf9fd |
| rev | line source |
|---|---|
| 3813 | 1 local array = require "util.array"; |
| 2 local jid = require "util.jid"; | |
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3 local json = require "util.json"; |
| 3813 | 4 local st = require "util.stanza"; |
| 5 local xml = require "util.xml"; | |
| 6 | |
| 7 local simple_types = { | |
| 8 -- basic message | |
| 9 body = "text_tag", | |
| 10 subject = "text_tag", | |
| 11 thread = "text_tag", | |
| 12 | |
| 13 -- basic presence | |
| 14 show = "text_tag", | |
| 15 status = "text_tag", | |
| 16 priority = "text_tag", | |
| 17 | |
| 18 state = {"name", "http://jabber.org/protocol/chatstates"}, | |
| 19 nick = {"text_tag", "http://jabber.org/protocol/nick", "nick"}, | |
| 20 delay = {"attr", "urn:xmpp:delay", "delay", "stamp"}, | |
| 21 replace = {"attr", "urn:xmpp:message-correct:0", "replace", "id"}, | |
| 22 | |
| 23 -- XEP-0045 MUC | |
| 24 -- TODO history, password, ??? | |
| 25 join = {"bool_tag", "http://jabber.org/protocol/muc", "x"}, | |
| 26 | |
| 27 -- XEP-0071 | |
| 28 html = { | |
| 29 "func", "http://jabber.org/protocol/xhtml-im", "html", | |
| 30 function (s) --> json string | |
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31 return (tostring(s:get_child("body", "http://www.w3.org/1999/xhtml")):gsub(" xmlns='[^']*'","", 1)); |
| 3813 | 32 end; |
| 33 function (s) --> xml | |
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34 if type(s) == "string" then |
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35 return assert(xml.parse([[<x:html xmlns:x='http://jabber.org/protocol/xhtml-im' xmlns='http://www.w3.org/1999/xhtml'>]]..s..[[</x:html>]])); |
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36 end |
| 3813 | 37 end; |
| 38 }; | |
| 39 | |
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40 -- XEP-0199: XMPP Ping |
| 3813 | 41 ping = {"bool_tag", "urn:xmpp:ping", "ping"}, |
| 42 | |
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43 -- XEP-0092: Software Version |
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44 version = {"func", "jabber:iq:version", "query", |
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45 function (s) |
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46 return { |
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47 name = s:get_child_text("name"); |
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48 version = s:get_child_text("version"); |
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49 os = s:get_child_text("os"); |
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50 } |
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51 end, |
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52 function (s) |
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53 local v = st.stanza("query", { xmlns = "jabber:iq:version" }); |
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54 if type(s) == "table" then |
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55 v:text_tag("name", s.name); |
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56 v:text_tag("version", s.version); |
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57 if s.os then |
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58 v:text_tag("os", s.os); |
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59 end |
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60 end |
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61 return v; |
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62 end |
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63 }; |
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64 |
| 3813 | 65 -- XEP-0030 |
| 66 disco = { | |
| 67 "func", "http://jabber.org/protocol/disco#info", "query", | |
| 68 function (s) --> array of features | |
| 69 local identities, features = array(), array(); | |
| 70 for tag in s:childtags() do | |
| 71 if tag.name == "identity" and tag.attr.category and tag.attr.type then | |
| 72 identities:push({ category = tag.attr.category, type = tag.attr.type, name = tag.attr.name }); | |
| 73 elseif tag.name == "feature" and tag.attr.var then | |
| 74 features:push(tag.attr.var); | |
| 75 end | |
| 76 end | |
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77 return { node = s.attr.node, identities = identities, features = features, }; |
| 3813 | 78 end; |
| 79 function (s) | |
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80 if type(s) == "table" and s ~= json.null then |
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81 local disco = st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#info", node = s.node }); |
| 3813 | 82 if s.identities then |
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83 for _, identity in ipairs(s.identities) do |
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84 disco:tag("identity", { category = identity.category, type = identity.type, name = identity.name }):up(); |
| 3813 | 85 end |
| 86 end | |
| 87 if s.features then | |
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88 for _, feature in ipairs(s.features) do |
| 3813 | 89 disco:tag("feature", { var = feature }):up(); |
| 90 end | |
| 91 end | |
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92 return disco; |
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93 else |
| 3870 | 94 return st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#info", }); |
| 3813 | 95 end |
| 96 end; | |
| 97 }; | |
| 98 | |
| 99 items = { | |
| 100 "func", "http://jabber.org/protocol/disco#items", "query", | |
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101 function (s) --> array of features | map with node |
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102 if s.attr.node and s.tags[1] == nil then |
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103 return { node = s.attr. node }; |
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104 end |
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105 |
| 3813 | 106 local items = array(); |
| 107 for item in s:childtags("item") do | |
| 108 items:push({ jid = item.attr.jid, node = item.attr.node, name = item.attr.name }); | |
| 109 end | |
| 110 return items; | |
| 111 end; | |
| 112 function (s) | |
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113 if type(s) == "table" and s ~= json.null then |
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114 local disco = st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#items", node = s.node }); |
| 3813 | 115 for _, item in ipairs(s) do |
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116 if type(item) == "string" then |
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117 disco:tag("item", { jid = item }); |
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118 elseif type(item) == "table" then |
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119 disco:tag("item", { jid = item.jid, node = item.node, name = item.name }); |
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120 end |
| 3813 | 121 end |
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122 return disco; |
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123 else |
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124 return st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#items", }); |
| 3813 | 125 end |
| 126 end; | |
| 127 }; | |
| 128 | |
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129 -- XEP-0050: Ad-Hoc Commands |
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130 command = {"func", "http://jabber.org/protocol/commands", "command", |
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131 function (s) |
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132 local cmd = { |
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133 action = s.attr.action, |
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134 node = s.attr.node, |
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135 sessionid = s.attr.sessionid, |
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136 status = s.attr.status, |
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137 }; |
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138 local actions = s:get_child("actions"); |
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139 local note = s:get_child("note"); |
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140 -- TODO -- local form = s:get_child("x", "jabber:x:data"); |
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141 if actions then |
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142 cmd.actions = { |
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143 execute = actions.attr.execute, |
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144 }; |
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145 for action in actions:childtags() do |
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146 cmd.actions[action.name] = true |
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147 end |
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148 elseif note then |
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149 cmd.note = { |
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150 type = note.attr.type; |
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151 text = note:get_text(); |
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152 }; |
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153 end |
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154 return cmd; |
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155 end; |
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156 function (s) |
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157 if type(s) == "table" and s ~= json.null then |
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158 local cmd = st.stanza("command", { |
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159 xmlns = "http://jabber.org/protocol/commands", |
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160 action = s.action, |
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161 node = s.node, |
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162 sessionid = s.sessionid, |
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163 status = s.status, |
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164 }); |
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165 return cmd; |
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166 elseif type(s) == "string" then -- assume node |
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167 return st.stanza("command", { xmlns = "http://jabber.org/protocol/commands", node = s }); |
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168 end |
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169 -- else .. missing required attribute |
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170 end; |
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171 }; |
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172 |
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173 -- XEP-0066: Out of Band Data |
| 3813 | 174 oob_url = {"func", "jabber:iq:oob", "query", |
| 175 function (s) | |
| 176 return s:get_child_text("url"); | |
| 177 end; | |
| 178 function (s) | |
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179 if type(s) == "string" then |
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180 return st.stanza("query", { xmlns = "jabber:iq:oob" }):text_tag("url", s); |
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181 end |
| 3813 | 182 end; |
| 183 }; | |
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184 |
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185 -- XEP-XXXX: User-defined Data Transfer |
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186 payload = {"func", "urn:xmpp:udt:0", "payload", |
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187 function (s) |
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188 local rawjson = s:get_child_text("json", "urn:xmpp:json:0"); |
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189 if not rawjson then return nil, "missing-json-payload"; end |
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190 local parsed, err = json.decode(rawjson); |
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191 if not parsed then return nil, err; end |
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192 return { |
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193 datatype = s.attr.datatype; |
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194 data = parsed; |
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195 }; |
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196 end; |
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197 function (s) |
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198 if type(s) == "table" then |
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199 return st.stanza("payload", { xmlns = "urn:xmpp:udt:0", datatype = s.datatype }) |
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200 :tag("json", { xmlns = "urn:xmpp:json:0" }):text(json.encode(s.data)); |
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201 end; |
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202 end |
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203 }; |
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204 |
| 3813 | 205 }; |
| 206 | |
| 207 local implied_kinds = { | |
| 208 disco = "iq", | |
| 209 items = "iq", | |
| 210 ping = "iq", | |
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211 version = "iq", |
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212 command = "iq", |
| 3813 | 213 |
| 214 body = "message", | |
| 215 html = "message", | |
| 216 replace = "message", | |
| 217 state = "message", | |
| 218 subject = "message", | |
| 219 thread = "message", | |
| 220 | |
| 221 join = "presence", | |
| 222 priority = "presence", | |
| 223 show = "presence", | |
| 224 status = "presence", | |
| 225 } | |
| 226 | |
| 227 local kind_by_type = { | |
| 228 get = "iq", set = "iq", result = "iq", | |
| 229 normal = "message", chat = "message", headline = "message", groupchat = "message", | |
| 230 available = "presence", unavailable = "presence", | |
| 231 subscribe = "presence", unsubscribe = "presence", | |
| 232 subscribed = "presence", unsubscribed = "presence", | |
| 233 } | |
| 234 | |
| 235 local function st2json(s) | |
| 236 local t = { | |
| 237 kind = s.name, | |
| 238 type = s.attr.type, | |
| 239 to = s.attr.to, | |
| 240 from = s.attr.from, | |
| 241 id = s.attr.id, | |
| 242 }; | |
| 243 if s.name == "presence" and not s.attr.type then | |
| 244 t.type = "available"; | |
| 245 end | |
| 246 | |
| 247 if t.to then | |
| 248 t.to = jid.prep(t.to); | |
| 249 if not t.to then return nil, "invalid-jid-to"; end | |
| 250 end | |
| 251 if t.from then | |
| 252 t.from = jid.prep(t.from); | |
| 253 if not t.from then return nil, "invalid-jid-from"; end | |
| 254 end | |
| 255 | |
| 256 if t.type == "error" then | |
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257 local error = s:get_child("error"); |
| 3813 | 258 local err_typ, err_condition, err_text = s:get_error(); |
| 259 t.error = { | |
| 260 type = err_typ, | |
| 261 condition = err_condition, | |
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262 text = err_text, |
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263 by = error.attr.by, |
| 3813 | 264 }; |
| 265 return t; | |
| 266 end | |
| 267 | |
| 268 for k, typ in pairs(simple_types) do | |
| 269 if typ == "text_tag" then | |
| 270 t[k] = s:get_child_text(k); | |
| 271 elseif typ[1] == "text_tag" then | |
| 272 t[k] = s:get_child_text(typ[3], typ[2]); | |
| 273 elseif typ[1] == "name" then | |
| 274 local child = s:get_child(nil, typ[2]); | |
| 275 if child then | |
| 276 t[k] = child.name; | |
| 277 end | |
| 278 elseif typ[1] == "attr" then | |
| 279 local child = s:get_child(typ[3], typ[2]) | |
| 280 if child then | |
| 281 t[k] = child.attr[typ[4]]; | |
| 282 end | |
| 283 elseif typ[1] == "bool_tag" then | |
| 284 if s:get_child(typ[3], typ[2]) then | |
| 285 t[k] = true; | |
| 286 end | |
| 287 elseif typ[1] == "func" then | |
| 288 local child = s:get_child(typ[3], typ[2] or k); | |
| 289 -- TODO handle err | |
| 290 if child then | |
| 291 t[k] = typ[4](child); | |
| 292 end | |
| 293 end | |
| 294 end | |
| 295 | |
| 296 return t; | |
| 297 end | |
| 298 | |
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299 local function str(s) |
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300 if type(s) == "string" then |
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301 return s; |
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302 end |
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303 end |
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304 |
| 3813 | 305 local function json2st(t) |
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306 if type(t) ~= "table" or not str(next(t)) then |
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307 return nil, "invalid-json"; |
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308 end |
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309 local kind = str(t.kind) or kind_by_type[str(t.type)]; |
| 3813 | 310 if not kind then |
| 311 for k, implied in pairs(implied_kinds) do | |
| 312 if t[k] then | |
| 313 kind = implied; | |
| 314 break | |
| 315 end | |
| 316 end | |
| 317 end | |
| 318 | |
| 319 local s = st.stanza(kind or "message", { | |
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320 type = t.type ~= "available" and str(t.type) or nil, |
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321 to = str(t.to) and jid.prep(t.to); |
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322 from = str(t.to) and jid.prep(t.from); |
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323 id = str(t.id), |
| 3813 | 324 }); |
| 325 | |
| 326 if t.to and not s.attr.to then | |
| 327 return nil, "invalid-jid-to"; | |
| 328 end | |
| 329 if t.from and not s.attr.from then | |
| 330 return nil, "invalid-jid-from"; | |
| 331 end | |
| 3819 | 332 if kind == "iq" and not s.attr.type then |
| 333 s.attr.type = "get"; | |
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334 end |
| 3813 | 335 |
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336 if type(t.error) == "table" then |
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337 return st.error_reply(st.reply(s), str(t.error.type), str(t.error.condition), str(t.error.text), str(t.error.by)); |
| 3813 | 338 elseif t.type == "error" then |
| 339 s:text_tag("error", t.body, { code = t.error_code and tostring(t.error_code) }); | |
| 340 return s; | |
| 341 end | |
| 342 | |
| 343 for k, v in pairs(t) do | |
| 344 local typ = simple_types[k]; | |
| 345 if typ then | |
| 346 if typ == "text_tag" then | |
| 347 s:text_tag(k, v); | |
| 348 elseif typ[1] == "text_tag" then | |
| 349 s:text_tag(typ[3] or k, v, typ[2] and { xmlns = typ[2] }); | |
| 350 elseif typ[1] == "name" then | |
| 351 s:tag(v, { xmlns = typ[2] }):up(); | |
| 352 elseif typ[1] == "attr" then | |
| 353 s:tag(typ[3] or k, { xmlns = typ[2], [ typ[4] or k ] = v }):up(); | |
| 354 elseif typ[1] == "bool_tag" then | |
| 355 s:tag(typ[3] or k, { xmlns = typ[2] }):up(); | |
| 356 elseif typ[1] == "func" then | |
| 357 s:add_child(typ[5](v)):up(); | |
| 358 end | |
| 359 end | |
| 360 end | |
| 361 | |
| 362 s:reset(); | |
| 363 | |
| 364 return s; | |
| 365 end | |
| 366 | |
| 367 return { | |
| 368 st2json = st2json; | |
| 369 json2st = json2st; | |
| 370 }; |
