316 lines
9.2 KiB
Erlang
316 lines
9.2 KiB
Erlang
%%% ====================================================================
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%%% ``The contents of this file are subject to the Erlang Public License,
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%%% Version 1.1, (the "License"); you may not use this file except in
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%%% compliance with the License. You should have received a copy of the
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%%% Erlang Public License along with this software. If not, it can be
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%%% retrieved via the world wide web at http://www.erlang.org/.
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%%%
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%%%
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%%% Software distributed under the License is distributed on an "AS IS"
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%%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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%%% the License for the specific language governing rights and limitations
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%%% under the License.
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%%%
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%%%
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%%% The Initial Developer of the Original Code is ProcessOne.
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%%% Portions created by ProcessOne are Copyright 2006-2015, ProcessOne
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%%% All Rights Reserved.''
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%%% This software is copyright 2006-2015, ProcessOne.
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%%%
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%%%
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%%% @copyright 2006-2015 ProcessOne
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%%% @author Christophe Romain <christophe.romain@process-one.net>
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%%% [http://www.process-one.net/]
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%%% @version {@vsn}, {@date} {@time}
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%%% @end
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%%% ====================================================================
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%%% @doc The module <strong>{@module}</strong> is the default PubSub node tree plugin.
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%%% <p>It is used as a default for all unknown PubSub node type. It can serve
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%%% as a developer basis and reference to build its own custom pubsub node tree
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%%% types.</p>
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%%% <p>PubSub node tree plugins are using the {@link gen_nodetree} behaviour.</p>
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%%% <p><strong>The API isn't stabilized yet</strong>. The pubsub plugin
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%%% development is still a work in progress. However, the system is already
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%%% useable and useful as is. Please, send us comments, feedback and
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%%% improvements.</p>
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-module(nodetree_tree_odbc).
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-behaviour(gen_pubsub_nodetree).
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-author('christophe.romain@process-one.net').
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-include("pubsub.hrl").
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-include("jlib.hrl").
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-export([init/3, terminate/2, options/0, set_node/1,
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get_node/3, get_node/2, get_node/1, get_nodes/2,
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get_nodes/1, get_parentnodes/3, get_parentnodes_tree/3,
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get_subnodes/3, get_subnodes_tree/3, create_node/6,
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delete_node/2]).
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-export([raw_to_node/2]).
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init(_Host, _ServerHost, _Opts) ->
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ok.
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terminate(_Host, _ServerHost) ->
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ok.
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options() ->
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[{odbc, true} | nodetree_tree:options()].
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set_node(Record) when is_record(Record, pubsub_node) ->
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{Host, Node} = Record#pubsub_node.nodeid,
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Parent = case Record#pubsub_node.parents of
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[] -> <<>>;
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[First | _] -> First
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end,
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Type = Record#pubsub_node.type,
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H = node_flat_odbc:encode_host(Host),
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N = ejabberd_odbc:escape(Node),
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P = ejabberd_odbc:escape(Parent),
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Nidx = case nodeidx(Host, Node) of
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{result, OldNidx} ->
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catch
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ejabberd_odbc:sql_query_t([<<"delete from pubsub_node_option where "
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"nodeid='">>, OldNidx, <<"';">>]),
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catch
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ejabberd_odbc:sql_query_t([<<"update pubsub_node set host='">>,
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H, <<"' node='">>, N,
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<<"' parent='">>, P,
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<<"' type='">>, Type,
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<<"' where nodeid='">>,
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OldNidx, <<"';">>]),
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OldNidx;
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_ ->
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catch
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ejabberd_odbc:sql_query_t([<<"insert into pubsub_node(host, node, "
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"parent, type) values('">>,
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H, <<"', '">>, N, <<"', '">>, P,
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<<"', '">>, Type, <<"');">>]),
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case nodeidx(Host, Node) of
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{result, NewNidx} -> NewNidx;
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_ -> none % this should not happen
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end
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end,
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case Nidx of
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none ->
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{error, ?ERR_INTERNAL_SERVER_ERROR};
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_ ->
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lists:foreach(fun ({Key, Value}) ->
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SKey = iolist_to_binary(atom_to_list(Key)),
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SValue = ejabberd_odbc:escape(
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list_to_binary(
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lists:flatten(io_lib:fwrite("~p", [Value])))),
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catch
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ejabberd_odbc:sql_query_t([<<"insert into pubsub_node_option(nodeid, "
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"name, val) values('">>,
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Nidx, <<"', '">>,
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SKey, <<"', '">>, SValue, <<"');">>])
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end,
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Record#pubsub_node.options),
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{result, Nidx}
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end.
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get_node(Host, Node, _From) ->
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get_node(Host, Node).
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get_node(Host, Node) ->
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H = node_flat_odbc:encode_host(Host),
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N = ejabberd_odbc:escape(Node),
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case catch
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ejabberd_odbc:sql_query_t([<<"select node, parent, type, nodeid from "
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"pubsub_node where host='">>,
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H, <<"' and node='">>, N, <<"';">>])
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of
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{selected,
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[<<"node">>, <<"parent">>, <<"type">>, <<"nodeid">>], [RItem]} ->
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raw_to_node(Host, RItem);
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{'EXIT', _Reason} ->
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{error, ?ERR_INTERNAL_SERVER_ERROR};
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_ ->
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{error, ?ERR_ITEM_NOT_FOUND}
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end.
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get_node(Nidx) ->
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case catch
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ejabberd_odbc:sql_query_t([<<"select host, node, parent, type from "
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"pubsub_node where nodeid='">>,
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Nidx, <<"';">>])
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of
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{selected,
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[<<"host">>, <<"node">>, <<"parent">>, <<"type">>], [[Host, Node, Parent, Type]]} ->
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raw_to_node(Host, [Node, Parent, Type, Nidx]);
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{'EXIT', _Reason} ->
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{error, ?ERR_INTERNAL_SERVER_ERROR};
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_ ->
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{error, ?ERR_ITEM_NOT_FOUND}
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end.
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get_nodes(Host, _From) ->
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get_nodes(Host).
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get_nodes(Host) ->
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H = node_flat_odbc:encode_host(Host),
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case catch
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ejabberd_odbc:sql_query_t([<<"select node, parent, type, nodeid from "
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"pubsub_node where host='">>, H, <<"';">>])
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of
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{selected,
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[<<"node">>, <<"parent">>, <<"type">>, <<"nodeid">>], RItems} ->
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[raw_to_node(Host, Item) || Item <- RItems];
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_ ->
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[]
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end.
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get_parentnodes(_Host, _Node, _From) ->
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[].
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%% @doc <p>Default node tree does not handle parents, return a list
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%% containing just this node.</p>
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get_parentnodes_tree(Host, Node, From) ->
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case get_node(Host, Node, From) of
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{error, _} -> [];
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Record -> [{0, [Record]}]
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end.
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get_subnodes(Host, Node, _From) ->
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get_subnodes(Host, Node).
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get_subnodes(Host, Node) ->
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H = node_flat_odbc:encode_host(Host),
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N = ejabberd_odbc:escape(Node),
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case catch
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ejabberd_odbc:sql_query_t([<<"select node, parent, type, nodeid from "
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"pubsub_node where host='">>,
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H, <<"' and parent='">>, N, <<"';">>])
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of
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{selected,
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[<<"node">>, <<"parent">>, <<"type">>, <<"nodeid">>], RItems} ->
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[raw_to_node(Host, Item) || Item <- RItems];
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_ ->
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[]
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end.
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get_subnodes_tree(Host, Node, _From) ->
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get_subnodes_tree(Host, Node).
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get_subnodes_tree(Host, Node) ->
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H = node_flat_odbc:encode_host(Host),
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N = ejabberd_odbc:escape(Node),
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case catch
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ejabberd_odbc:sql_query_t([<<"select node, parent, type, nodeid from "
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"pubsub_node where host='">>,
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H, <<"' and node like '">>, N, <<"%';">>])
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of
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{selected,
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[<<"node">>, <<"parent">>, <<"type">>, <<"nodeid">>], RItems} ->
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[raw_to_node(Host, Item) || Item <- RItems];
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_ ->
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[]
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end.
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create_node(Host, Node, Type, Owner, Options, Parents) ->
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BJID = jlib:jid_tolower(jlib:jid_remove_resource(Owner)),
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case nodeidx(Host, Node) of
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{error, ?ERR_ITEM_NOT_FOUND} ->
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ParentExists = case Host of
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{_U, _S, _R} ->
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%% This is special case for PEP handling
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%% PEP does not uses hierarchy
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true;
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_ ->
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case Parents of
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[] ->
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true;
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[Parent | _] ->
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case nodeidx(Host, Parent) of
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{result, PNode} ->
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case nodeowners(PNode) of
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[{<<>>, Host, <<>>}] -> true;
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Owners -> lists:member(BJID, Owners)
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end;
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_ ->
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false
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end;
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_ ->
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false
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end
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end,
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case ParentExists of
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true ->
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case set_node(#pubsub_node{nodeid = {Host, Node},
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parents = Parents, type = Type,
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options = Options})
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of
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{result, Nidx} -> {ok, Nidx};
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Other -> Other
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end;
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false ->
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{error, ?ERR_FORBIDDEN}
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end;
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{result, _} ->
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{error, ?ERR_CONFLICT};
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Error ->
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Error
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end.
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delete_node(Host, Node) ->
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H = node_flat_odbc:encode_host(Host),
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N = ejabberd_odbc:escape(Node),
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Removed = get_subnodes_tree(Host, Node),
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catch ejabberd_odbc:sql_query_t([<<"delete from pubsub_node where host='">>,
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H, <<"' and node like '">>, N, <<"%';">>]),
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Removed.
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%% helpers
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raw_to_node(Host, [Node, Parent, Type, Nidx]) ->
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Options = case catch
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ejabberd_odbc:sql_query_t([<<"select name,val from pubsub_node_option "
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"where nodeid='">>, Nidx, <<"';">>])
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of
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{selected, [<<"name">>, <<"val">>], ROptions} ->
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DbOpts = lists:map(fun ([Key, Value]) ->
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RKey = jlib:binary_to_atom(Key),
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Tokens = element(2, erl_scan:string(binary_to_list(<<Value/binary, ".">>))),
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RValue = element(2, erl_parse:parse_term(Tokens)),
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{RKey, RValue}
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end,
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ROptions),
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Module = jlib:binary_to_atom(<<"node_", Type/binary, "_odbc">>),
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StdOpts = Module:options(),
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lists:foldl(fun ({Key, Value}, Acc) ->
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lists:keyreplace(Key, 1, Acc, {Key, Value})
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end,
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StdOpts, DbOpts);
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_ ->
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[]
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end,
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Parents = case Parent of
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<<>> -> [];
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_ -> [Parent]
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end,
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#pubsub_node{nodeid = {Host, Node},
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parents = Parents,
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id = Nidx, type = Type, options = Options}.
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nodeidx(Host, Node) ->
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H = node_flat_odbc:encode_host(Host),
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N = ejabberd_odbc:escape(Node),
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case catch
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ejabberd_odbc:sql_query_t([<<"select nodeid from pubsub_node where "
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"host='">>,
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H, <<"' and node='">>, N, <<"';">>])
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of
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{selected, [<<"nodeid">>], [[Nidx]]} ->
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{result, Nidx};
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{'EXIT', _Reason} ->
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{error, ?ERR_INTERNAL_SERVER_ERROR};
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_ ->
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{error, ?ERR_ITEM_NOT_FOUND}
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end.
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nodeowners(Nidx) ->
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{result, Res} = node_flat_odbc:get_node_affiliations(Nidx),
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[LJID || {LJID, Aff} <- Res, Aff =:= owner].
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