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Copy ejabberd_xmlrpc from ejabberd-modules SVN
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Badlop
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src/ejabberd_xmlrpc.erl
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467
src/ejabberd_xmlrpc.erl
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%%%----------------------------------------------------------------------
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%%% File : ejabberd_xmlrpc.erl
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%%% Author : Badlop <badlop@process-one.net>
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%%% Purpose : XML-RPC server that frontends ejabberd commands
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%%% Created : 21 Aug 2007 by Badlop <badlop@ono.com>
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%%% Id : $Id: ejabberd_xmlrpc.erl 595 2008-05-20 11:39:31Z badlop $
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%%%----------------------------------------------------------------------
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%%% TODO: Implement a command in ejabberdctl 'help COMMAND LANGUAGE' that shows
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%%% a coding example to call that command in a specific language (python, php).
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%%% TODO: Remove support for plaintext password
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%%% TODO: commands strings should be strings without ~n
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-module(ejabberd_xmlrpc).
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-author('badlop@process-one.net').
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-export([
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start_listener/2,
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handler/2,
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socket_type/0
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]).
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-include("ejabberd.hrl").
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-include("mod_roster.hrl").
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-include("jlib.hrl").
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-record(state, {access_commands, auth = noauth, get_auth}).
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%% Test:
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, take_integer, [{struct, [{thisinteger, 5}]}]}).
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%% {ok,{response,[{struct,[{zero,0}]}]}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echo_string, [{struct, [{thisstring, "abcd"}]}]}).
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%% {ok,{response,[{struct,[{thatstring,"abcd"}]}]}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, tell_tuple_3integer, [{struct, [{thisstring, "abcd"}]}]}).
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%% {ok,{response,
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%% [{struct,
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%% [{thattuple,
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%% {array,
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%% [{struct,[{first,123}]},
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%% {struct,[{second,456}]},
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%% {struct,[{third,789}]}]}}]}]}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, pow, [{struct, [{base, 5}, {exponent, 7}]}]}).
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%% {ok,{response,[{struct,[{pow,78125}]}]}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, seq, [{struct, [{from, 3}, {to, 7}]}]}).
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%% {ok,{response,[{array,[{struct,[{intermediate,3}]},
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%% {struct,[{intermediate,4}]},
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%% {struct,[{intermediate,5}]},
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%% {struct,[{intermediate,6}]},
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%% {struct,[{intermediate,7}]}]}]}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, substrs, [{struct, [{word, "abcd"}]}]}).
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%% NO:
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%% {ok,{response,[{array,[{struct,[{miniword,"a"}]},
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%% {struct,[{miniword,"ab"}]},
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%% {struct,[{miniword,"abc"}]},
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%% {struct,[{miniword,"abcd"}]}]}]}}
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%% {ok,{response,
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%% [{struct,
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%% [{substrings,
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%% {array,
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%% [{struct,[{miniword,"a"}]},
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%% {struct,[{miniword,"ab"}]},
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%% {struct,[{miniword,"abc"}]},
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%% {struct,[{miniword,"abcd"}]}]}}]}]}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, splitjid, [{struct, [{jid, "abcd@localhost/work"}]}]}).
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%% {ok,{response,
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%% [{struct,
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%% [{jidparts,
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%% {array,
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%% [{struct,[{user,"abcd"}]},
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%% {struct,[{server,"localhost"}]},
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%% {struct,[{resource,"work"}]}]}}]}]}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echo_integer_string, [{struct, [{thisstring, "abc"}, {thisinteger, 55}]}]}).
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%% {ok,{response,
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%% [{struct,
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%% [{thistuple,
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%% {array,
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%% [{struct,[{thisinteger,55}]},
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%% {struct,[{thisstring,"abc"}]}]}}]}]}}
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%%
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echo_list_integer, [{struct, [{thislist, {array, [{struct, [{thisinteger, 55}, {thisinteger, 4567}]}]}}]}]}).
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%% {ok,{response,
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%% [{struct,
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%% [{thatlist,
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%% {array,
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%% [{struct,[{thatinteger,55}]},
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%% {struct,[{thatinteger,4567}]}]}}]}]}}
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%%
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echo_integer_list_string, [{struct, [{thisinteger, 123456}, {thislist, {array, [{struct, [{thisstring, "abc"}, {thisstring, "bobo baba"}]}]}}]}]}).
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%% {ok,
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%% {response,
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%% [{struct,
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%% [{thistuple,
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%% {array,
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%% [{struct,[{thatinteger,123456}]},
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%% {struct,
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%% [{thatlist,
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%% {array,
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%% [{struct,[{thatstring,"abc"}]},
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%% {struct,[{thatstring,"bobo baba"}]}]}}]}]}}]}]}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, take_tuple_2integer, [{struct, [{thistuple, {array, [{struct, [{thisinteger1, 55}, {thisinteger2, 4567}]}]}}]}]}).
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%% {ok,{response,[{struct,[{zero,0}]}]}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echo_isatils, [{struct,
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%% [{thisinteger, 123456990},
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%% {thisstring, "This is ISATILS"},
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%% {thisatom, "test_isatils"},
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%% {thistuple, {array, [{struct, [
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%% {listlen, 2},
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%% {thislist, {array, [{struct, [
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%% {contentstring, "word1"},
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%% {contentstring, "word 2"}
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%% ]}]}}
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%% ]}]}}
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%% ]}]}).
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%% {ok,{response,
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%% [{struct,
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%% [{results,
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%% {array,
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%% [{struct,[{thatinteger,123456990}]},
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%% {struct,[{thatstring,"This is ISATILS"}]},
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%% {struct,[{thatatom,"test_isatils"}]},
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%% {struct,
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%% [{thattuple,
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%% {array,
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%% [{struct,[{listlen,123456990}]},
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%% {struct,[{thatlist,...}]}]}}]}]}}]}]}}
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%% ecommand doesn't exist:
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echo_integer_string2, [{struct, [{thisstring, "abc"}]}]}).
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%% {ok,{response,{fault,-1, "Unknown call: {call,echo_integer_string2,[{struct,[{thisstring,\"abc\"}]}]}"}}}
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%%
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%% Duplicated argument:
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echo_integer_string, [{struct, [{thisstring, "abc"}, {thisinteger, 44}, {thisinteger, 55}]}]}).
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%% {ok,{response,{fault,-104, "Error -104\nAttribute 'thisinteger' duplicated:\n[{thisstring,\"abc\"},{thisinteger,44},{thisinteger,55}]"}}}
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%%
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%% Missing argument:
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echo_integer_string, [{struct, [{thisstring, "abc"}]}]}).
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%% {ok,{response,{fault,-106, "Error -106\nRequired attribute 'thisinteger' not found:\n[{thisstring,\"abc\"}]"}}}
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%%
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%% Duplicated tuple element:
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, take_tuple_2integer, [{struct, [{thistuple, {array, [{struct, [{thisinteger1, 55}, {thisinteger1, 66}, {thisinteger2, 4567}]}]}}]}]}).
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%% {ok,{response,{fault,-104, "Error -104\nAttribute 'thisinteger1' defined multiple times:\n[{thisinteger1,55},{thisinteger1,66},{thisinteger2,4567}]"}}}
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%%
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%% Missing element in tuple:
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, take_tuple_2integer, [{struct, [{thistuple, {array, [{struct, [{thisinteger1, 55}, {thisintegerc, 66}, {thisinteger, 4567}]}]}}]}]}).
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%% {ok,{response,{fault,-106, "Error -106\nRequired attribute 'thisinteger2' not found:\n[{thisintegerc,66},{thisinteger,4567}]"}}}
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%%
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%% The ecommand crashed:
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, this_crashes, [{struct, []}]}).
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%% {ok,{response,{fault,-100, "Error -100\nA problem 'error' occurred executing the command this_crashes with arguments []: badarith"}}}
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%% -----------------------------
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%% Listener interface
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%% -----------------------------
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start_listener({Port, Ip, tcp = _TranportProtocol}, Opts) ->
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%% get options
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MaxSessions = gen_mod:get_opt(maxsessions, Opts, 10),
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Timeout = gen_mod:get_opt(timeout, Opts, 5000),
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AccessCommands = gen_mod:get_opt(access_commands, Opts, []),
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GetAuth = case [ACom || {Ac, _, _} = ACom <- AccessCommands, Ac /= all] of
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[] -> false;
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_ -> true
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end,
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%% start the XML-RPC server
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Handler = {?MODULE, handler},
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State = #state{access_commands = AccessCommands, get_auth = GetAuth},
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xmlrpc:start_link(Ip, Port, MaxSessions, Timeout, Handler, State).
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socket_type() ->
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independent.
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%% -----------------------------
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%% Access verification
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%% -----------------------------
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%% @spec (AuthList) -> {User, Server, Password}
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%% where
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%% AuthList = [{user, string()}, {server, string()}, {password, string()}]
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%% It may throw: {error, missing_auth_arguments, Attr}
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get_auth(AuthList) ->
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%% Check AuthList contains all the required data
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[User, Server, Password] =
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try get_attrs([user, server, password], AuthList) of
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[U, S, P] -> [U, S, P]
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catch
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exit:{attribute_not_found, Attr, _} ->
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throw({error, missing_auth_arguments, Attr})
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end,
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{User, Server, Password}.
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%% -----------------------------
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%% Handlers
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%% -----------------------------
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%% Call: Arguments: Returns:
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%% .............................
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%% Access verification
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echothis, [152]}).
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%% {ok,{response,{fault,-103, "Error -103\nRequired authentication: {call,echothis,[152]}"}}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echothis, [{struct, [{user, "badlop"}, {server, "localhost"}, {password, "ada"}]}, 152]}).
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%% {ok,{response,{fault,-103,
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%% "Error -103\nAuthentication non valid: [{user,\"badlop\"},\n
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%% {server,\"localhost\"},\n
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%% {password,\"ada\"}]"}}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echothis, [{struct, [{user, "badlop"}, {server, "localhost"}, {password, "ada90ada"}]}, 152]}).
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%% {ok,{response,[152]}}
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%%
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%% xmlrpc:call({127, 0, 0, 1}, 4560, "/", {call, echothis, [{struct, [{user, "badlop"}, {server, "localhost"}, {password, "79C1574A43BC995F2B145A299EF97277"}]}, 152]}).
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%% {ok,{response,[152]}}
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handler(#state{get_auth = true, auth = noauth} = State, {call, Method, [{struct, AuthList} | Arguments] = AllArgs}) ->
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try get_auth(AuthList) of
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Auth ->
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handler(State#state{get_auth = false, auth = Auth}, {call, Method, Arguments})
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catch
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{error, missing_auth_arguments, _Attr} ->
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handler(State#state{get_auth = false, auth = noauth}, {call, Method, AllArgs})
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end;
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%% .............................
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%% Debug
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%% echothis String String
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handler(_State, {call, echothis, [A]}) ->
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{false, {response, [A]}};
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%% echothisnew struct[{sentence, String}] struct[{repeated, String}]
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handler(_State, {call, echothisnew, [{struct, [{sentence, A}]}]}) ->
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{false, {response, [{struct, [{repeated, A}]}]}};
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%% multhis struct[{a, Integer}, {b, Integer}] Integer
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handler(_State, {call, multhis, [{struct, [{a, A}, {b, B}]}]}) ->
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{false, {response, [A*B]}};
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%% multhisnew struct[{a, Integer}, {b, Integer}] struct[{mu, Integer}]
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handler(_State, {call, multhisnew, [{struct, [{a, A}, {b, B}]}]}) ->
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{false, {response, [{struct, [{mu, A*B}]}]}};
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%% .............................
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%% Statistics
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%% tellme_title String String
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handler(_State, {call, tellme_title, [A]}) ->
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{false, {response, [get_title(A)]}};
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%% tellme_value String String
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handler(_State, {call, tellme_value, [A]}) ->
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N = node(),
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{false, {response, [get_value(N, A)]}};
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%% tellme String struct[{title, String}, {value. String}]
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handler(_State, {call, tellme, [A]}) ->
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N = node(),
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T = {title, get_title(A)},
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V = {value, get_value(N, A)},
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R = {struct, [T, V]},
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{false, {response, [R]}};
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%% .............................
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%% ejabberd commands
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handler(State, {call, Command, []}) ->
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%% The XMLRPC request may not contain a struct parameter,
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%% but our internal functions need such struct, even if it's empty
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%% So let's add it and do a recursive call:
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handler(State, {call, Command, [{struct, []}]});
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handler(State, {call, Command, [{struct, AttrL}]} = Payload) ->
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case ejabberd_commands:get_command_format(Command) of
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{error, command_unknown} ->
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build_fault_response(-112, "Unknown call: ~p", [Payload]);
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{ArgsF, ResultF} ->
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try_do_command(State#state.access_commands, State#state.auth, Command, AttrL, ArgsF, ResultF)
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end;
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%% If no other guard matches
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handler(_State, Payload) ->
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build_fault_response(-112, "Unknown call: ~p", [Payload]).
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%% -----------------------------
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%% Command
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%% -----------------------------
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try_do_command(AccessCommands, Auth, Command, AttrL, ArgsF, ResultF) ->
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try do_command(AccessCommands, Auth, Command, AttrL, ArgsF, ResultF) of
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{command_result, ResultFormatted} ->
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{false, {response, [ResultFormatted]}}
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catch
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exit:{duplicated_attribute, ExitAt, ExitAtL} ->
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build_fault_response(-114, "Attribute '~p' duplicated:~n~p", [ExitAt, ExitAtL]);
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exit:{attribute_not_found, ExitAt, ExitAtL} ->
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build_fault_response(-116, "Required attribute '~p' not found:~n~p", [ExitAt, ExitAtL]);
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exit:{additional_unused_args, ExitAtL} ->
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build_fault_response(-120, "The call provided additional unused arguments:~n~p", [ExitAtL]);
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throw:Why ->
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build_fault_response(-118, "A problem '~p' occurred executing the command ~p with arguments~n~p", [Why, Command, AttrL])
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end.
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build_fault_response(Code, ParseString, ParseArgs) ->
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FaultString = "Error " ++ integer_to_list(Code) ++ "\n" ++
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lists:flatten(io_lib:format(ParseString, ParseArgs)),
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?WARNING_MSG(FaultString, []), %% Show Warning message in ejabberd log file
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{false, {response, {fault, Code, FaultString}}}.
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do_command(AccessCommands, Auth, Command, AttrL, ArgsF, ResultF) ->
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ArgsFormatted = format_args(AttrL, ArgsF),
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Result = ejabberd_commands:execute_command(AccessCommands, Auth, Command, ArgsFormatted),
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ResultFormatted = format_result(Result, ResultF),
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{command_result, ResultFormatted}.
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%%-----------------------------
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%% Format arguments
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%%-----------------------------
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get_attrs(Attribute_names, L) ->
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[get_attr(A, L) || A <- Attribute_names].
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get_attr(A, L) ->
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case lists:keysearch(A, 1, L) of
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{value, {A, Value}} -> Value;
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false ->
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%% Report the error and then force a crash
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exit({attribute_not_found, A, L})
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end.
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%% Get an element from a list and delete it.
|
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%% The element must be defined once and only once,
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%% otherwise the function crashes on purpose.
|
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get_elem_delete(A, L) ->
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case proplists:get_all_values(A, L) of
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[Value] ->
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{Value, proplists:delete(A, L)};
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[_, _ | _] ->
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%% Crash reporting the error
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exit({duplicated_attribute, A, L});
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[] ->
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%% Report the error and then force a crash
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exit({attribute_not_found, A, L})
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end.
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format_args(Args, ArgsFormat) ->
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{ArgsRemaining, R} =
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lists:foldl(
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fun({ArgName, ArgFormat}, {Args1, Res}) ->
|
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{ArgValue, Args2} = get_elem_delete(ArgName, Args1),
|
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Formatted = format_arg(ArgValue, ArgFormat),
|
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{Args2, Res ++ [Formatted]}
|
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end,
|
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{Args, []},
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ArgsFormat),
|
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case ArgsRemaining of
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[] -> R;
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L when is_list(L) ->
|
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exit({additional_unused_args, L})
|
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end.
|
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format_arg({array, [{struct, Elements}]}, {list, {ElementDefName, ElementDefFormat}})
|
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when is_list(Elements) ->
|
||||
lists:map(
|
||||
fun({ElementName, ElementValue}) ->
|
||||
true = (ElementDefName == ElementName),
|
||||
format_arg(ElementValue, ElementDefFormat)
|
||||
end,
|
||||
Elements);
|
||||
format_arg({array, [{struct, Elements}]}, {tuple, ElementsDef})
|
||||
when is_list(Elements) ->
|
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FormattedList = format_args(Elements, ElementsDef),
|
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list_to_tuple(FormattedList);
|
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format_arg({array, Elements}, {list, ElementsDef})
|
||||
when is_list(Elements) and is_atom(ElementsDef) ->
|
||||
[format_arg(Element, ElementsDef) || Element <- Elements];
|
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format_arg(Arg, integer)
|
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when is_integer(Arg) ->
|
||||
Arg;
|
||||
format_arg(Arg, string)
|
||||
when is_list(Arg) ->
|
||||
Arg.
|
||||
|
||||
|
||||
%% -----------------------------
|
||||
%% Result
|
||||
%% -----------------------------
|
||||
|
||||
format_result({error, Error}, _) ->
|
||||
throw({error, Error});
|
||||
|
||||
format_result(String, string) ->
|
||||
lists:flatten(String);
|
||||
|
||||
format_result(Atom, {Name, atom}) ->
|
||||
{struct, [{Name, atom_to_list(Atom)}]};
|
||||
|
||||
format_result(Int, {Name, integer}) ->
|
||||
{struct, [{Name, Int}]};
|
||||
|
||||
format_result(String, {Name, string}) ->
|
||||
{struct, [{Name, lists:flatten(String)}]};
|
||||
|
||||
format_result(Code, {Name, rescode}) ->
|
||||
{struct, [{Name, make_status(Code)}]};
|
||||
|
||||
format_result({Code, Text}, {Name, restuple}) ->
|
||||
{struct, [{Name, make_status(Code)},
|
||||
{text, lists:flatten(Text)}]};
|
||||
|
||||
%% Result is a list of something: [something()]
|
||||
format_result(Elements, {Name, {list, ElementsDef}}) ->
|
||||
FormattedList = lists:map(
|
||||
fun(Element) ->
|
||||
format_result(Element, ElementsDef)
|
||||
end,
|
||||
Elements),
|
||||
{struct, [{Name, {array, FormattedList}}]};
|
||||
|
||||
%% Result is a tuple with several elements: {something1(), something2(), ...}
|
||||
format_result(ElementsTuple, {Name, {tuple, ElementsDef}}) ->
|
||||
ElementsList = tuple_to_list(ElementsTuple),
|
||||
ElementsAndDef = lists:zip(ElementsList, ElementsDef),
|
||||
FormattedList = lists:map(
|
||||
fun({Element, ElementDef}) ->
|
||||
format_result(Element, ElementDef)
|
||||
end,
|
||||
ElementsAndDef),
|
||||
{struct, [{Name, {array, FormattedList}}]}.
|
||||
%% TODO: should be struct instead of array?
|
||||
|
||||
|
||||
make_status(ok) -> 0;
|
||||
make_status(true) -> 0;
|
||||
make_status(false) -> 1;
|
||||
make_status(error) -> 1;
|
||||
make_status(_) -> 1.
|
||||
|
||||
|
||||
%% -----------------------------
|
||||
%% Internal
|
||||
%% -----------------------------
|
||||
|
||||
get_title(A) -> mod_statsdx:get_title(A).
|
||||
get_value(N, A) -> mod_statsdx:get(N, [A]).
|
||||
Loading…
Reference in New Issue
Block a user