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-- Prosody IM v0.4
-- Copyright (C) 2008-2009 Matthew Wild
-- Copyright (C) 2008-2009 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
local pairs = pairs;
local type = type;
local error = error;
local t_concat = table.concat;
local t_insert = table.insert;
local tostring = tostring;
local tonumber = tonumber;
local st = require "util.stanza";
module "xmlrpc"
local _lua_to_xmlrpc;
local map = {
table=function(stanza, object)
stanza:tag("struct");
for name, value in pairs(object) do
stanza:tag("member");
stanza:tag("name"):text(tostring(name)):up();
stanza:tag("value");
_lua_to_xmlrpc(stanza, value);
stanza:up();
stanza:up();
end
stanza:up();
end;
boolean=function(stanza, object)
stanza:tag("boolean"):text(object and "1" or "0"):up();
end;
string=function(stanza, object)
stanza:tag("string"):text(object):up();
end;
number=function(stanza, object)
stanza:tag("int"):text(tostring(object)):up();
end;
["nil"]=function(stanza, object) -- nil extension
stanza:tag("nil"):up();
end;
};
_lua_to_xmlrpc = function(stanza, object)
local h = map[type(object)];
if h then
h(stanza, object);
else
error("Type not supported by XML-RPC: " .. type(object));
end
end
function create_response(object)
local stanza = st.stanza("methodResponse"):tag("params"):tag("param"):tag("value");
_lua_to_xmlrpc(stanza, object);
stanza:up():up():up();
return stanza;
end
function create_error_response(faultCode, faultString)
local stanza = st.stanza("methodResponse"):tag("fault"):tag("value");
_lua_to_xmlrpc(stanza, {faultCode=faultCode, faultString=faultString});
stanza:up():up();
return stanza;
end
local _xmlrpc_to_lua;
local int_parse = function(stanza)
if #stanza.tags ~= 0 or #stanza == 0 then error("<"..stanza.name.."> must have a single text child"); end
local n = tonumber(t_concat(stanza));
if n then return n; end
error("Failed to parse content of <"..stanza.name..">");
end
local rmap = {
methodCall=function(stanza)
if #stanza.tags ~= 2 then error("<methodCall> must have exactly two subtags"); end -- FIXME <params> is optional
if stanza.tags[1].name ~= "methodName" then error("First <methodCall> child tag must be <methodName>") end
if stanza.tags[2].name ~= "params" then error("Second <methodCall> child tag must be <params>") end
return _xmlrpc_to_lua(stanza.tags[1]), _xmlrpc_to_lua(stanza.tags[2]);
end;
methodName=function(stanza)
if #stanza.tags ~= 0 then error("<methodName> must not have any subtags"); end
if #stanza == 0 then error("<methodName> must have text content"); end
return t_concat(stanza);
end;
params=function(stanza)
local t = {};
for _, child in pairs(stanza.tags) do
if child.name ~= "param" then error("<params> can only have <param> children"); end;
t_insert(t, _xmlrpc_to_lua(child));
end
return t;
end;
param=function(stanza)
if not(#stanza.tags == 1 and stanza.tags[1].name == "value") then error("<param> must have exactly one <value> child"); end
return _xmlrpc_to_lua(stanza.tags[1]);
end;
value=function(stanza)
if #stanza.tags == 0 then return t_concat(stanza); end
if #stanza.tags ~= 1 then error("<value> must have a single child"); end
return _xmlrpc_to_lua(stanza.tags[1]);
end;
int=int_parse;
i4=int_parse;
double=int_parse;
boolean=function(stanza)
if #stanza.tags ~= 0 or #stanza == 0 then error("<boolean> must have a single text child"); end
local b = t_concat(stanza);
if b ~= "1" and b ~= "0" then error("Failed to parse content of <boolean>"); end
return b == "1" and true or false;
end;
string=function(stanza)
if #stanza.tags ~= 0 then error("<string> must have a single text child"); end
return t_concat(stanza);
end;
array=function(stanza)
if #stanza.tags ~= 1 then error("<array> must have a single <data> child"); end
return _xmlrpc_to_lua(stanza.tags[1]);
end;
data=function(stanza)
local t = {};
for _,child in pairs(stanza.tags) do
if child.name ~= "value" then error("<data> can only have <value> children"); end
t_insert(t, _xmlrpc_to_lua(child));
end
return t;
end;
struct=function(stanza)
local t = {};
for _,child in pairs(stanza.tags) do
if child.name ~= "member" then error("<struct> can only have <member> children"); end
local name, value = _xmlrpc_to_lua(child);
t[name] = value;
end
return t;
end;
member=function(stanza)
if #stanza.tags ~= 2 then error("<member> must have exactly two subtags"); end -- FIXME <params> is optional
if stanza.tags[1].name ~= "name" then error("First <member> child tag must be <name>") end
if stanza.tags[2].name ~= "value" then error("Second <member> child tag must be <value>") end
return _xmlrpc_to_lua(stanza.tags[1]), _xmlrpc_to_lua(stanza.tags[2]);
end;
name=function(stanza)
if #stanza.tags ~= 0 then error("<name> must have a single text child"); end
local n = t_concat(stanza)
if tostring(tonumber(n)) == n then n = tonumber(n); end
return n;
end;
["nil"]=function(stanza) -- nil extension
return nil;
end;
}
_xmlrpc_to_lua = function(stanza)
local h = rmap[stanza.name];
if h then
return h(stanza);
else
error("Unknown element: "..stanza.name);
end
end
function translate_request(stanza)
if stanza.name ~= "methodCall" then error("XML-RPC requests must have <methodCall> as root element"); end
return _xmlrpc_to_lua(stanza);
end
return _M;
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