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%%%---------------------------------------------------------------------- |
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%%% File : mod_vcard.erl |
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%%% Author : Alexey Shchepin <alexey@process-one.net> |
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%%% Purpose : vCard support via RDBMS |
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%%% Created : 2 Jan 2003 by Alexey Shchepin <alexey@process-one.net> |
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%%% |
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%%% |
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%%% ejabberd, Copyright (C) 2002-2011 ProcessOne |
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%%% |
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%%% This program is free software; you can redistribute it and/or |
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%%% modify it under the terms of the GNU General Public License as |
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%%% published by the Free Software Foundation; either version 2 of the |
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%%% License, or (at your option) any later version. |
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%%% |
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%%% This program is distributed in the hope that it will be useful, |
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of |
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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%%% General Public License for more details. |
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%%% |
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%%% You should have received a copy of the GNU General Public License |
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%%% along with this program; if not, write to the Free Software |
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%%% Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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%%% |
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%%%---------------------------------------------------------------------- |
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-module(mod_vcard_rdbms). |
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-behaviour(mod_vcard_backend). |
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%% mod_vcards callbacks |
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-export([init/2, |
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remove_user/3, |
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remove_domain/2, |
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get_vcard/3, |
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set_vcard/5, |
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search/3, |
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search_fields/2, |
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search_reported_fields/3]). |
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|
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-include("mongoose.hrl"). |
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-include("jlib.hrl"). |
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-include("mod_vcard.hrl"). |
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|
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-type filter_type() :: equal | like. |
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-type limit_type() :: infinity | top | limit. |
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-type sql_column() :: binary(). |
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-type sql_value() :: binary(). |
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-type sql_filter() :: {filter_type(), sql_column(), sql_value()}. |
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|
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init(HostType, _Options) -> |
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:-( |
mongoose_rdbms:prepare(vcard_remove, vcard, [username, server], |
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<<"DELETE FROM vcard WHERE username=? AND server=?">>), |
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:-( |
mongoose_rdbms:prepare(vcard_search_remove, vcard_search, [lusername, server], |
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<<"DELETE FROM vcard_search WHERE lusername=? AND server=?">>), |
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:-( |
mongoose_rdbms:prepare(vcard_remove_domain, vcard, [server], |
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<<"DELETE FROM vcard WHERE server=?">>), |
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:-( |
mongoose_rdbms:prepare(vcard_search_remove_domain, vcard_search, [server], |
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<<"DELETE FROM vcard_search WHERE server=?">>), |
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:-( |
mongoose_rdbms:prepare(vcard_select, vcard, |
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[username, server], |
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<<"SELECT vcard FROM vcard WHERE username=? AND server=?">>), |
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:-( |
rdbms_queries:prepare_upsert(HostType, vcard_upsert, vcard, |
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[<<"username">>, <<"server">>, <<"vcard">>], |
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[<<"vcard">>], |
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[<<"username">>, <<"server">>]), |
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:-( |
SearchColumns = search_columns(), |
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:-( |
rdbms_queries:prepare_upsert(HostType, vcard_search_upsert, vcard_search, |
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[<<"lusername">>, <<"server">>|SearchColumns], |
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SearchColumns, |
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[<<"lusername">>, <<"server">>]), |
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:-( |
ok. |
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|
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%% Remove user callback |
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remove_user(HostType, LUser, LServer) -> |
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:-( |
F = fun() -> remove_user_t(HostType, LUser, LServer) end, |
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:-( |
mongoose_rdbms:sql_transaction(HostType, F). |
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|
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remove_user_t(HostType, LUser, LServer) -> |
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:-( |
mongoose_rdbms:execute(HostType, vcard_remove, [LUser, LServer]), |
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:-( |
mongoose_rdbms:execute(HostType, vcard_search_remove, [LUser, LServer]). |
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|
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%% Remove domain callback |
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-spec remove_domain(mongooseim:host_type(), jid:lserver()) -> ok. |
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remove_domain(HostType, Domain) -> |
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:-( |
F = fun() -> remove_domain_t(HostType, Domain) end, |
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:-( |
mongoose_rdbms:sql_transaction(HostType, F), |
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:-( |
ok. |
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|
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remove_domain_t(HostType, Domain) -> |
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:-( |
mongoose_rdbms:execute_successfully(HostType, vcard_remove_domain, [Domain]), |
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:-( |
mongoose_rdbms:execute_successfully(HostType, vcard_search_remove_domain, [Domain]). |
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|
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%% Get a single vCard callback |
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get_vcard(HostType, LUser, LServer) -> |
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:-( |
Res = mongoose_rdbms:execute(HostType, vcard_select, [LUser, LServer]), |
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:-( |
case Res of |
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{selected, [{SVCARD}]} -> |
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:-( |
case exml:parse(SVCARD) of |
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{error, Reason} -> |
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:-( |
?LOG_WARNING(#{what => vcard_corrupted, |
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text => <<"Not sending back bad vCard XML">>, |
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reason => Reason, svcard => SVCARD, |
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:-( |
user => LUser, host => LServer}), |
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:-( |
{error, mongoose_xmpp_errors:service_unavailable()}; |
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{ok, VCARD} -> |
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:-( |
{ok, [VCARD]} |
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end; |
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{selected, []} -> |
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:-( |
{error, mongoose_xmpp_errors:item_not_found()} |
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end. |
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|
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%% Set a vCard callback |
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set_vcard(HostType, User, LServer, VCard, Search) -> |
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:-( |
LUser = jid:nodeprep(User), |
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:-( |
SearchArgs = assert_binaries(search_args(User, Search)), |
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:-( |
XML = exml:to_binary(VCard), |
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:-( |
F = fun() -> |
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:-( |
update_vcard_t(HostType, LUser, LServer, XML), |
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:-( |
update_vcard_search_t(HostType, LUser, LServer, SearchArgs), |
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:-( |
ok |
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end, |
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:-( |
Result = handle_result(rdbms_queries:sql_transaction(HostType, F)), |
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:-( |
log_upsert_result(HostType, LServer, LUser, VCard, XML, Result), |
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:-( |
Result. |
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|
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%% Do not pass unicode strings as a list of bytes into MySQL driver. |
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%% MySQL driver treats lists of integers as lists of codepoints. |
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%% So, it wouldn't be encoded properly. |
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%% Only binaries should be used to avoid confusion. |
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assert_binaries(Bins) -> |
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:-( |
case lists:all(fun is_binary/1, Bins) of |
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true -> |
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:-( |
Bins; |
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false -> |
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:-( |
error(#{what => assert_binaries_failed, binaries => Bins}) |
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end. |
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|
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log_upsert_result(HostType, LServer, LUser, VCard, _XML, ok) -> |
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:-( |
mongoose_hooks:vcard_set(HostType, LServer, LUser, VCard); |
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log_upsert_result(HostType, LServer, LUser, _VCard, XML, {error, Reason}) -> |
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:-( |
?LOG_WARNING(#{what => vcard_update_failed, reason => Reason, |
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host_type => HostType, |
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:-( |
user => LUser, server => LServer, vcard_xml => XML}). |
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|
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:-( |
handle_result({atomic, ok}) -> ok; |
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:-( |
handle_result({aborted, Reason}) -> {error, {aborted, Reason}}; |
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:-( |
handle_result({error, Reason}) -> {error, Reason}. |
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|
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update_vcard_t(HostType, LUser, LServer, XML) -> |
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:-( |
InsertParams = [LUser, LServer, XML], |
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:-( |
UpdateParams = [XML], |
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:-( |
UniqueKeyValues = [LUser, LServer], |
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:-( |
rdbms_queries:execute_upsert(HostType, vcard_upsert, InsertParams, UpdateParams, UniqueKeyValues). |
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|
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update_vcard_search_t(HostType, LUser, LServer, SearchArgs) -> |
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:-( |
InsertParams = [LUser, LServer|SearchArgs], |
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:-( |
UpdateParams = SearchArgs, |
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:-( |
UniqueKeyValues = [LUser, LServer], |
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:-( |
rdbms_queries:execute_upsert(HostType, vcard_search_upsert, InsertParams, UpdateParams, UniqueKeyValues). |
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|
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%% Search vCards fields callback |
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search_fields(_HostType, _VHost) -> |
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:-( |
mod_vcard:default_search_fields(). |
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%% Search vCards reported fields callback |
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-spec search_reported_fields(mongooseim:host_type(), jid:lserver(), ejabberd:lang()) -> |
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[mongoose_data_forms:field()]. |
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search_reported_fields(_HostType, _VHost, Lang) -> |
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:-( |
mod_vcard:get_default_reported_fields(Lang). |
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|
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%% Search vCards callback |
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-spec search(mongooseim:host_type(), jid:lserver(), term()) -> [[mongoose_data_forms:field()]]. |
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search(HostType, LServer, Data) -> |
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:-( |
Filters = make_filters(LServer, Data), |
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:-( |
case Filters of |
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[] -> |
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:-( |
[]; |
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_ -> |
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:-( |
Limit = mod_vcard:get_results_limit(HostType), |
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:-( |
LimitType = limit_type(Limit), |
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:-( |
StmtName = filters_to_statement_name(Filters, LimitType), |
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:-( |
case mongoose_rdbms:prepared(StmtName) of |
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false -> |
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%% Create a new type of a query |
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:-( |
SQL = search_sql_binary(Filters, LimitType), |
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:-( |
Columns = filters_to_columns(Filters, LimitType), |
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:-( |
mongoose_rdbms:prepare(StmtName, vcard_search, Columns, SQL); |
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true -> |
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:-( |
ok |
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end, |
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:-( |
Args = filters_to_args(Filters, LimitType, Limit), |
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:-( |
try mongoose_rdbms:execute(HostType, StmtName, Args) of |
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{selected, Rs} when is_list(Rs) -> |
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:-( |
record_to_items(Rs); |
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Error -> |
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:-( |
?LOG_ERROR(#{what => vcard_db_search_failed, statement => StmtName, |
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sql_query => search_sql_binary(Filters, LimitType), |
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:-( |
reason => Error, host => LServer}), |
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:-( |
[] |
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catch Class:Error:Stacktrace -> |
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:-( |
?LOG_ERROR(#{what => vcard_db_search_failed, statement => StmtName, |
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sql_query => search_sql_binary(Filters, LimitType), |
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class => Class, stacktrace => Stacktrace, |
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:-( |
reason => Error, host => LServer}), |
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:-( |
[] |
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end |
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end. |
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|
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-spec limit_type(infinity | non_neg_integer()) -> limit_type(). |
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limit_type(infinity) -> |
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:-( |
infinity; |
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limit_type(_Limit) -> |
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:-( |
case mongoose_rdbms:db_type() of |
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:-( |
mssql -> top; |
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:-( |
_ -> limit |
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end. |
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|
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%% Encodes filter column names using short format |
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filters_to_statement_name(Filters, LimitType) -> |
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:-( |
Ids = [type_to_id(Type) ++ column_to_id(Col) || {Type, Col, _Val} <- Filters], |
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:-( |
LimitId = limit_type_to_id(LimitType), |
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:-( |
list_to_atom("vcard_search_" ++ LimitId ++ "_" ++ lists:append(Ids)). |
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filters_to_columns(Filters, LimitType) -> |
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:-( |
Columns = [Col || {_Type, Col, _Val} <- Filters], |
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%% <<"limit">> is a pseudocolumn: does not exist in the schema, |
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%% but mssql's driver code needs to know which type to use for the placeholder. |
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:-( |
case LimitType of |
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:-( |
infinity -> Columns; |
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:-( |
top -> [<<"limit">>|Columns]; |
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:-( |
limit -> Columns ++ [<<"limit">>] |
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end. |
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filters_to_args(Filters, LimitType, Limit) -> |
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:-( |
Args = [Val || {_Type, _Col, Val} <- Filters], |
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:-( |
case LimitType of |
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:-( |
infinity -> Args; |
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:-( |
top -> [Limit|Args]; |
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:-( |
limit -> Args ++ [Limit] |
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end. |
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|
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search_sql_binary(Filters, LimitType) -> |
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:-( |
iolist_to_binary(search_sql(Filters, LimitType)). |
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|
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search_sql(Filters, LimitType) -> |
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:-( |
{TopSQL, LimitSQL} = limit_type_to_sql(LimitType), |
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:-( |
RestrictionSQL = filters_to_sql(Filters), |
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:-( |
[<<"SELECT ">>, TopSQL, |
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<<" username, server, fn, family, given, middle, " |
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"nickname, bday, ctry, locality, " |
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"email, orgname, orgunit " |
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"FROM vcard_search ">>, |
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RestrictionSQL, LimitSQL]. |
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|
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-spec limit_type_to_sql(limit_type()) -> {binary(), binary()}. |
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limit_type_to_sql(infinity) -> |
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:-( |
{<<>>, <<>>}; |
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limit_type_to_sql(top) -> |
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:-( |
{<<" TOP (?) ">>, <<>>}; |
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limit_type_to_sql(limit) -> |
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:-( |
{<<>>, <<" LIMIT ? ">>}. |
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|
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filters_to_sql([Filter|Filters]) -> |
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:-( |
[" WHERE ", filter_to_sql(Filter)| |
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:-( |
[[" AND ", filter_to_sql(F)] || F <- Filters]]. |
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|
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filter_to_sql({equal, Col, _}) -> |
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:-( |
[Col, "=?"]; |
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filter_to_sql({like, Col, _}) -> |
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:-( |
[Col, " LIKE ?"]. |
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|
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%% The result defines everything that is needed to prepare an SQL query. |
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-spec make_filters(jid:lserver(), list()) -> [sql_filter()]. |
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make_filters(LServer, Data) -> |
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:-( |
Filters = only_tuples([filter_field(Var, Val) || {Var, [Val]} <- Data]), |
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:-( |
case Filters of |
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[] -> |
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:-( |
[]; |
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_ -> |
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:-( |
HostFilter = {equal, <<"server">>, LServer}, |
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:-( |
lists:sort([HostFilter|Filters]) |
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end. |
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|
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only_tuples(List) -> |
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:-( |
[X || X <- List, is_tuple(X)]. |
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|
|
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filter_field(Var, Val) when is_binary(Val) and (Val /= <<"">>) -> |
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:-( |
case xmpp_field_to_column(Var) of |
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false -> |
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:-( |
false; |
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|
Field -> |
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:-( |
Type = value_type(Val), |
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:-( |
LVal = prepare_value(Val, Type), |
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:-( |
{Type, Field, LVal} |
| 295 |
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end; |
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filter_field(_, _) -> |
| 297 |
:-( |
false. |
| 298 |
|
|
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|
prepare_value(Val, like) -> |
| 300 |
:-( |
LVal = without_last_byte(jid:str_tolower(Val)), |
| 301 |
:-( |
<<LVal/binary, "%">>; |
| 302 |
|
prepare_value(Val, equal) -> |
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:-( |
jid:str_tolower(Val). |
| 304 |
|
|
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value_type(Val) -> |
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:-( |
case binary:last(Val) of |
| 307 |
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$* -> |
| 308 |
:-( |
like; |
| 309 |
|
_ -> |
| 310 |
:-( |
equal |
| 311 |
|
end. |
| 312 |
|
|
| 313 |
:-( |
limit_type_to_id(infinity) -> "inf"; |
| 314 |
:-( |
limit_type_to_id(limit) -> "lim"; |
| 315 |
:-( |
limit_type_to_id(top) -> "top". |
| 316 |
|
|
| 317 |
:-( |
type_to_id(like) -> "l"; |
| 318 |
:-( |
type_to_id(equal) -> "e". |
| 319 |
|
|
| 320 |
:-( |
xmpp_field_to_column(<<"user">>) -> <<"lusername">>; |
| 321 |
:-( |
xmpp_field_to_column(<<"fn">>) -> <<"lfn">>; |
| 322 |
:-( |
xmpp_field_to_column(<<"last">>) -> <<"lfamily">>; |
| 323 |
:-( |
xmpp_field_to_column(<<"first">>) -> <<"lgiven">>; |
| 324 |
:-( |
xmpp_field_to_column(<<"middle">>) -> <<"lmiddle">>; |
| 325 |
:-( |
xmpp_field_to_column(<<"nick">>) -> <<"lnickname">>; |
| 326 |
:-( |
xmpp_field_to_column(<<"bday">>) -> <<"lbday">>; |
| 327 |
:-( |
xmpp_field_to_column(<<"ctry">>) -> <<"lctry">>; |
| 328 |
:-( |
xmpp_field_to_column(<<"locality">>) -> <<"llocality">>; |
| 329 |
:-( |
xmpp_field_to_column(<<"email">>) -> <<"lemail">>; |
| 330 |
:-( |
xmpp_field_to_column(<<"orgname">>) -> <<"lorgname">>; |
| 331 |
:-( |
xmpp_field_to_column(<<"orgunit">>) -> <<"lorgunit">>; |
| 332 |
:-( |
xmpp_field_to_column(_) -> false. |
| 333 |
|
|
| 334 |
:-( |
column_to_id(<<"server">>) -> "s"; |
| 335 |
:-( |
column_to_id(<<"lusername">>) -> "u"; |
| 336 |
:-( |
column_to_id(<<"lfn">>) -> "f"; |
| 337 |
:-( |
column_to_id(<<"lfamily">>) -> "l"; |
| 338 |
:-( |
column_to_id(<<"lgiven">>) -> "f"; |
| 339 |
:-( |
column_to_id(<<"lmiddle">>) -> "m"; |
| 340 |
:-( |
column_to_id(<<"lnickname">>) -> "n"; |
| 341 |
:-( |
column_to_id(<<"lbday">>) -> "b"; |
| 342 |
:-( |
column_to_id(<<"lctry">>) -> "c"; |
| 343 |
:-( |
column_to_id(<<"llocality">>) -> "L"; |
| 344 |
:-( |
column_to_id(<<"lemail">>) -> "e"; |
| 345 |
:-( |
column_to_id(<<"lorgname">>) -> "N"; |
| 346 |
:-( |
column_to_id(<<"lorgunit">>) -> "U". |
| 347 |
|
|
| 348 |
|
search_columns() -> |
| 349 |
:-( |
[<<"username">>, |
| 350 |
|
<<"fn">>, <<"lfn">>, |
| 351 |
|
<<"family">>, <<"lfamily">>, |
| 352 |
|
<<"given">>, <<"lgiven">>, |
| 353 |
|
<<"middle">>, <<"lmiddle">>, |
| 354 |
|
<<"nickname">>, <<"lnickname">>, |
| 355 |
|
<<"bday">>, <<"lbday">>, |
| 356 |
|
<<"ctry">>, <<"lctry">>, |
| 357 |
|
<<"locality">>, <<"llocality">>, |
| 358 |
|
<<"email">>, <<"lemail">>, |
| 359 |
|
<<"orgname">>, <<"lorgname">>, |
| 360 |
|
<<"orgunit">>, <<"lorgunit">>]. |
| 361 |
|
|
| 362 |
|
search_args(User, Search) -> |
| 363 |
:-( |
[User, |
| 364 |
|
Search#vcard_search.fn, Search#vcard_search.lfn, |
| 365 |
|
Search#vcard_search.family, Search#vcard_search.lfamily, |
| 366 |
|
Search#vcard_search.given, Search#vcard_search.lgiven, |
| 367 |
|
Search#vcard_search.middle, Search#vcard_search.lmiddle, |
| 368 |
|
Search#vcard_search.nickname, Search#vcard_search.lnickname, |
| 369 |
|
Search#vcard_search.bday, Search#vcard_search.lbday, |
| 370 |
|
Search#vcard_search.ctry, Search#vcard_search.lctry, |
| 371 |
|
Search#vcard_search.locality, Search#vcard_search.llocality, |
| 372 |
|
Search#vcard_search.email, Search#vcard_search.lemail, |
| 373 |
|
Search#vcard_search.orgname, Search#vcard_search.lorgname, |
| 374 |
|
Search#vcard_search.orgunit, Search#vcard_search.lorgunit]. |
| 375 |
|
|
| 376 |
|
without_last_byte(Bin) -> |
| 377 |
:-( |
binary:part(Bin, 0, byte_size(Bin)-1). |
| 378 |
|
|
| 379 |
|
record_to_items(Records) -> |
| 380 |
:-( |
[record_to_item(Record) || Record <- Records]. |
| 381 |
|
|
| 382 |
|
record_to_item({Username, VCardVHost, FN, Family, Given, Middle, |
| 383 |
|
Nickname, BDay, CTRY, Locality, |
| 384 |
|
EMail, OrgName, OrgUnit}) -> |
| 385 |
:-( |
[ |
| 386 |
|
?FIELD(<<"jid">>, <<Username/binary, "@", VCardVHost/binary>>), |
| 387 |
|
?FIELD(<<"fn">>, FN), |
| 388 |
|
?FIELD(<<"last">>, Family), |
| 389 |
|
?FIELD(<<"first">>, Given), |
| 390 |
|
?FIELD(<<"middle">>, Middle), |
| 391 |
|
?FIELD(<<"nick">>, Nickname), |
| 392 |
|
?FIELD(<<"bday">>, BDay), |
| 393 |
|
?FIELD(<<"ctry">>, CTRY), |
| 394 |
|
?FIELD(<<"locality">>, Locality), |
| 395 |
|
?FIELD(<<"email">>, EMail), |
| 396 |
|
?FIELD(<<"orgname">>, OrgName), |
| 397 |
|
?FIELD(<<"orgunit">>, OrgUnit) |
| 398 |
|
]. |