1212

Committed 18 Nov 2025 12:37PM UTC coverage: 33.784% (+0.003%) from 33.781%

Build # 1212

Build Type

push

github

Committed by

badlop

Commit Message

mod_conversejs: Improve link to conversejs in WebAdmin (#4495)

Until now, the WebAdmin menu included a link to the first request handler
with mod_conversejs that the admin configured in ejabberd.yml
That link included the authentication credentials hashed as URI arguments
if using HTTPS. Then process/2 extracted those arguments and passed them
as autologin options to Converse.

From now, mod_conversejs automatically adds a request_handler nested in
webadmin subpath. The webadmin menu links to that converse URI; this allows
to access the HTTP auth credentials, no need to explicitly pass them.
process/2 extracts this HTTP auth and passes autologin options to Converse.
Now scram password storage is supported too.

This minimum configuration allows WebAdmin to access Converse:

listen:
  -
    port: 5443
    module: ejabberd_http
    tls: true
    request_handlers:
      /admin: ejabberd_web_admin
      /ws: ejabberd_http_ws
modules:
  mod_conversejs:
    conversejs_resources: "/home/conversejs/12.0.0/dist"

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52.78

/src/mod_mam_sql.erl

%%%-------------------------------------------------------------------
%%% File    : mod_mam_sql.erl
%%% Author  : Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% Created : 15 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2025   ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 of the
%%% License, or (at your option) any later version.
%%%
%%% This program is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
%%% General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License along
%%% with this program; if not, write to the Free Software Foundation, Inc.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%----------------------------------------------------------------------

-module(mod_mam_sql).


-behaviour(mod_mam).

%% API
-export([init/2, remove_user/2, remove_room/3, delete_old_messages/3,
         extended_fields/1, store/10, write_prefs/4, get_prefs/2, select/7, export/1, remove_from_archive/3,
         is_empty_for_user/2, is_empty_for_room/3, select_with_mucsub/6,
         delete_old_messages_batch/4, count_messages_to_delete/3]).
-export([sql_schemas/0]).

-include_lib("stdlib/include/ms_transform.hrl").
-include_lib("xmpp/include/xmpp.hrl").
-include("mod_mam.hrl").
-include("logger.hrl").
-include("ejabberd_sql_pt.hrl").
-include("mod_muc_room.hrl").

%%%===================================================================
%%% API
%%%===================================================================
init(Host, _Opts) ->
    ejabberd_sql_schema:update_schema(Host, ?MODULE, sql_schemas()),
    ok.

sql_schemas() ->
    [#sql_schema{
        version = 2,
        tables =
            [#sql_table{
                name = <<"archive">>,
                columns =
                    [#sql_column{name = <<"username">>, type = text},
                     #sql_column{name = <<"server_host">>, type = text},
                     #sql_column{name = <<"timestamp">>, type = bigint},
                     #sql_column{name = <<"peer">>, type = text},
                     #sql_column{name = <<"bare_peer">>, type = text},
                     #sql_column{name = <<"xml">>, type = {text, big}},
                     #sql_column{name = <<"txt">>, type = {text, big}},
                     #sql_column{name = <<"id">>, type = bigserial},
                     #sql_column{name = <<"kind">>, type = {text, 10}},
                     #sql_column{name = <<"nick">>, type = text},
                     #sql_column{name = <<"origin_id">>, type = text},
                     #sql_column{name = <<"created_at">>, type = timestamp,
                                 default = true}],
                indices = [#sql_index{
                              columns = [<<"server_host">>, <<"username">>, <<"timestamp">>]},
                           #sql_index{
                              columns = [<<"server_host">>, <<"username">>, <<"peer">>]},
                           #sql_index{
                              columns = [<<"server_host">>, <<"username">>, <<"bare_peer">>]},
                           #sql_index{
                              columns = [<<"server_host">>, <<"timestamp">>]},
                           #sql_index{
                              columns = [<<"server_host">>, <<"username">>, <<"origin_id">>]}
                          ],
                post_create =
                    fun(#sql_schema_info{db_type = mysql}) ->
                            [<<"CREATE FULLTEXT INDEX i_archive_txt ON archive(txt);">>];
                       (_) ->
                            []
                    end},
             #sql_table{
                name = <<"archive_prefs">>,
                columns =
                    [#sql_column{name = <<"username">>, type = text},
                     #sql_column{name = <<"server_host">>, type = text},
                     #sql_column{name = <<"def">>, type = text},
                     #sql_column{name = <<"always">>, type = text},
                     #sql_column{name = <<"never">>, type = text},
                     #sql_column{name = <<"created_at">>, type = timestamp,
                                 default = true}],
                indices = [#sql_index{
                              columns = [<<"server_host">>, <<"username">>],
                              unique = true}]}],
        update =
            [{add_column, <<"archive">>, <<"origin_id">>},
             {create_index, <<"archive">>,
              [<<"server_host">>, <<"username">>, <<"origin_id">>]}
            ]},
     #sql_schema{
        version = 1,
        tables =
            [#sql_table{
                name = <<"archive">>,
                columns =
                    [#sql_column{name = <<"username">>, type = text},
                     #sql_column{name = <<"server_host">>, type = text},
                     #sql_column{name = <<"timestamp">>, type = bigint},
                     #sql_column{name = <<"peer">>, type = text},
                     #sql_column{name = <<"bare_peer">>, type = text},
                     #sql_column{name = <<"xml">>, type = {text, big}},
                     #sql_column{name = <<"txt">>, type = {text, big}},
                     #sql_column{name = <<"id">>, type = bigserial},
                     #sql_column{name = <<"kind">>, type = {text, 10}},
                     #sql_column{name = <<"nick">>, type = text},
                     #sql_column{name = <<"created_at">>, type = timestamp,
                                 default = true}],
                indices = [#sql_index{
                              columns = [<<"server_host">>, <<"username">>, <<"timestamp">>]},
                           #sql_index{
                              columns = [<<"server_host">>, <<"username">>, <<"peer">>]},
                           #sql_index{
                              columns = [<<"server_host">>, <<"username">>, <<"bare_peer">>]},
                           #sql_index{
                              columns = [<<"server_host">>, <<"timestamp">>]}
                          ],
                post_create =
                    fun(#sql_schema_info{db_type = mysql}) ->
                            ejabberd_sql:sql_query_t(
                              <<"CREATE FULLTEXT INDEX i_archive_txt ON archive(txt);">>);
                       (_) ->
                            ok
                    end},
             #sql_table{
                name = <<"archive_prefs">>,
                columns =
                    [#sql_column{name = <<"username">>, type = text},
                     #sql_column{name = <<"server_host">>, type = text},
                     #sql_column{name = <<"def">>, type = text},
                     #sql_column{name = <<"always">>, type = text},
                     #sql_column{name = <<"never">>, type = text},
                     #sql_column{name = <<"created_at">>, type = timestamp,
                                 default = true}],
                indices = [#sql_index{
                              columns = [<<"server_host">>, <<"username">>],
                              unique = true}]}]}].

remove_user(LUser, LServer) ->
    ejabberd_sql:sql_query(
      LServer,
      ?SQL("delete from archive where username=%(LUser)s and %(LServer)H")),
    ejabberd_sql:sql_query(
      LServer,
      ?SQL("delete from archive_prefs where username=%(LUser)s and %(LServer)H")).

remove_room(LServer, LName, LHost) ->
    LUser = jid:encode({LName, LHost, <<>>}),
    remove_user(LUser, LServer).

remove_from_archive({LUser, LHost}, LServer, Key) ->
    remove_from_archive(jid:encode({LUser, LHost, <<>>}), LServer, Key);
remove_from_archive(LUser, LServer, none) ->
    case ejabberd_sql:sql_query(LServer,
                                ?SQL("delete from archive where username=%(LUser)s and %(LServer)H")) of
        {error, Reason} -> {error, Reason};
        _ -> ok
    end;
remove_from_archive(LUser, LServer, #jid{} = WithJid) ->
    Peer = jid:encode(jid:remove_resource(WithJid)),
    case ejabberd_sql:sql_query(LServer,
                                ?SQL("delete from archive where username=%(LUser)s and %(LServer)H and bare_peer=%(Peer)s")) of
        {error, Reason} -> {error, Reason};
        _ -> ok
    end;
remove_from_archive(LUser, LServer, StanzaId) ->
    case ejabberd_sql:sql_query(LServer,
                                ?SQL("delete from archive where username=%(LUser)s and %(LServer)H and timestamp=%(StanzaId)d")) of
        {error, Reason} -> {error, Reason};
        _ -> ok
    end.

count_messages_to_delete(ServerHost, TimeStamp, Type) ->
    TS = misc:now_to_usec(TimeStamp),
    Res =
    case Type of
        all ->
            ejabberd_sql:sql_query(
                ServerHost,
                ?SQL("select count(*) from archive"
                     " where timestamp < %(TS)d and %(ServerHost)H"));
        _ ->
            SType = misc:atom_to_binary(Type),
            ejabberd_sql:sql_query(
                ServerHost,
                ?SQL("select @(count(*))d from archive"
                     " where timestamp < %(TS)d"
                     " and kind=%(SType)s"
                     " and %(ServerHost)H"))
    end,
    case Res of
        {selected, [Count]} ->
            {ok, Count};
        _ ->
            error
    end.

delete_old_messages_batch(ServerHost, TimeStamp, Type, Batch) ->
    TS = misc:now_to_usec(TimeStamp),
    Res =
        case Type of
            all ->
                ejabberd_sql:sql_query(
                    ServerHost,
                    fun(sqlite, _) ->
                        ejabberd_sql:sql_query_t(
                            ?SQL("delete from archive where rowid in "
                                 "(select rowid from archive where timestamp < %(TS)d and %(ServerHost)H limit %(Batch)d)"));
                       (mssql, _) ->
                           ejabberd_sql:sql_query_t(
                               ?SQL("delete top(%(Batch)d)§ from archive"
                                    " where timestamp < %(TS)d and %(ServerHost)H"));
                       (_, _) ->
                           ejabberd_sql:sql_query_t(
                               ?SQL("delete from archive"
                                    " where timestamp < %(TS)d and %(ServerHost)H limit %(Batch)d"))
                    end);
            _ ->
                SType = misc:atom_to_binary(Type),
                ejabberd_sql:sql_query(
                    ServerHost,
                    fun(sqlite,_)->
                        ejabberd_sql:sql_query_t(
                            ?SQL("delete from archive where rowid in ("
                                 " select rowid from archive where timestamp < %(TS)d"
                                 " and kind=%(SType)s"
                                 " and %(ServerHost)H limit %(Batch)d)"));
                       (mssql, _)->
                           ejabberd_sql:sql_query_t(
                               ?SQL("delete top(%(Batch)d) from archive"
                                    " where timestamp < %(TS)d"
                                    " and kind=%(SType)s"
                                    " and %(ServerHost)H"));
                       (_,_)->
                           ejabberd_sql:sql_query_t(
                               ?SQL("delete from archive"
                                    " where timestamp < %(TS)d"
                                    " and kind=%(SType)s"
                                    " and %(ServerHost)H limit %(Batch)d"))
                    end)
        end,
    case Res of
        {updated, Count} ->
            {ok, Count};
        {error, _} = Error ->
            Error
    end.

delete_old_messages(ServerHost, TimeStamp, Type) ->
    TS = misc:now_to_usec(TimeStamp),
    case Type of
        all ->
            ejabberd_sql:sql_query(
              ServerHost,
              ?SQL("delete from archive"
                   " where timestamp < %(TS)d and %(ServerHost)H"));
        _ ->
            SType = misc:atom_to_binary(Type),
            ejabberd_sql:sql_query(
              ServerHost,
              ?SQL("delete from archive"
                   " where timestamp < %(TS)d"
                   " and kind=%(SType)s"
                   " and %(ServerHost)H"))
    end,
    ok.

extended_fields(LServer) ->
    case ejabberd_option:sql_type(LServer) of
        mysql ->
            [{withtext, <<"">>},
             #xdata_field{var = <<"{urn:xmpp:fulltext:0}fulltext">>,
                          type = 'text-single',
                          label = <<"Search the text">>,
                          values = []}];
        _ ->
            []
    end.

store(Pkt, LServer, {LUser, LHost}, Type, Peer, Nick, _Dir, TS,
      OriginID, Retract) ->
    SUser = case Type of
                chat -> LUser;
                groupchat -> jid:encode({LUser, LHost, <<>>})
            end,
    BarePeer = jid:encode(
                 jid:tolower(
                   jid:remove_resource(Peer))),
    LPeer = jid:encode(
              jid:tolower(Peer)),
    Body = fxml:get_subtag_cdata(Pkt, <<"body">>),
    SType = misc:atom_to_binary(Type),
    SqlType = ejabberd_option:sql_type(LServer),
    XML = case mod_mam_opt:compress_xml(LServer) of
              true ->
                  J1 = case Type of
                              chat -> jid:encode({LUser, LHost, <<>>});
                              groupchat -> SUser
                          end,
                  xml_compress:encode(Pkt, J1, LPeer);
              _ ->
                  fxml:element_to_binary(Pkt)
          end,
    case Retract of
        {true, RID} ->
            ejabberd_sql:sql_query(
              LServer,
              ?SQL("delete from archive"
                   " where username=%(SUser)s"
                   " and %(LServer)H"
                   " and bare_peer=%(BarePeer)s"
                   " and origin_id=%(RID)s"));
        false -> ok
    end,
    case SqlType of
        mssql -> case ejabberd_sql:sql_query(
                   LServer,
                   ?SQL_INSERT(
                      "archive",
                      ["username=%(SUser)s",
                       "server_host=%(LServer)s",
                       "timestamp=%(TS)d",
                       "peer=%(LPeer)s",
                       "bare_peer=%(BarePeer)s",
                       "xml=N%(XML)s",
                       "txt=N%(Body)s",
                       "kind=%(SType)s",
                       "nick=%(Nick)s",
                       "origin_id=%(OriginID)s"])) of
                {updated, _} ->
                    ok;
                Err ->
                    Err
            end;
        _ -> case ejabberd_sql:sql_query(
                   LServer,
                   ?SQL_INSERT(
                      "archive",
                      ["username=%(SUser)s",
                       "server_host=%(LServer)s",
                       "timestamp=%(TS)d",
                       "peer=%(LPeer)s",
                       "bare_peer=%(BarePeer)s",
                       "xml=%(XML)s",
                       "txt=%(Body)s",
                       "kind=%(SType)s",
                       "nick=%(Nick)s",
                       "origin_id=%(OriginID)s"])) of
                {updated, _} ->
                    ok;
                Err ->
                    Err
            end
    end.

write_prefs(LUser, _LServer, #archive_prefs{default = Default,
                                           never = Never,
                                           always = Always},
            ServerHost) ->
    SDefault = erlang:atom_to_binary(Default, utf8),
    SAlways = misc:term_to_expr(Always),
    SNever = misc:term_to_expr(Never),
    case ?SQL_UPSERT(
            ServerHost,
            "archive_prefs",
            ["!username=%(LUser)s",
             "!server_host=%(ServerHost)s",
             "def=%(SDefault)s",
             "always=%(SAlways)s",
             "never=%(SNever)s"]) of
        ok ->
            ok;
        Err ->
            Err
    end.

get_prefs(LUser, LServer) ->
    case ejabberd_sql:sql_query(
           LServer,
           ?SQL("select @(def)s, @(always)s, @(never)s from archive_prefs"
                " where username=%(LUser)s and %(LServer)H")) of
        {selected, [{SDefault, SAlways, SNever}]} ->
            Default = erlang:binary_to_existing_atom(SDefault, utf8),
            Always = ejabberd_sql:decode_term(SAlways),
            Never = ejabberd_sql:decode_term(SNever),
            {ok, #archive_prefs{us = {LUser, LServer},
                    default = Default,
                    always = Always,
                    never = Never}};
        _ ->
            error
    end.

select(LServer, JidRequestor, #jid{luser = LUser} = JidArchive,
       MAMQuery, RSM, MsgType, Flags) ->
    User = case MsgType of
               chat -> LUser;
               _ -> jid:encode(JidArchive)
           end,
    {Query, CountQuery} = make_sql_query(User, LServer, MAMQuery, RSM, none),
    do_select_query(LServer, JidRequestor, JidArchive, RSM, MsgType, Query, CountQuery, Flags).

-spec select_with_mucsub(binary(), jid(), jid(), mam_query:result(),
                             #rsm_set{} | undefined, all | only_count | only_messages) ->
                                {[{binary(), non_neg_integer(), xmlel()}], boolean(), non_neg_integer()} |
                                {error, db_failure}.
select_with_mucsub(LServer, JidRequestor, #jid{luser = LUser} = JidArchive,
                   MAMQuery, RSM, Flags) ->
    Extra = case gen_mod:db_mod(LServer, mod_muc) of
                mod_muc_sql ->
                    subscribers_table;
                _ ->
                    SubRooms = case mod_muc_admin:find_hosts(LServer) of
                                   [First|_] ->
                                       case mod_muc:get_subscribed_rooms(First, JidRequestor) of
                                           {ok, L} -> L;
                                           {error, _} -> []
                                       end;
                                   _ ->
                                       []
                               end,
                    [jid:encode(Jid) || {Jid, _, _} <- SubRooms]
            end,
    {Query, CountQuery} = make_sql_query(LUser, LServer, MAMQuery, RSM, Extra),
    do_select_query(LServer, JidRequestor, JidArchive, RSM, chat, Query, CountQuery, Flags).

do_select_query(LServer, JidRequestor, #jid{luser = LUser} = JidArchive, RSM,
                MsgType, Query, CountQuery, Flags) ->
    % TODO from XEP-0313 v0.2: "To conserve resources, a server MAY place a
    % reasonable limit on how many stanzas may be pushed to a client in one
    % request. If a query returns a number of stanzas greater than this limit
    % and the client did not specify a limit using RSM then the server should
    % return a policy-violation error to the client." We currently don't do this
    % for v0.2 requests, but we do limit #rsm_in.max for v0.3 and newer.
    QRes = case Flags of
                   all ->
                       {ejabberd_sql:sql_query(LServer, Query), ejabberd_sql:sql_query(LServer, CountQuery)};
                   only_messages ->
                       {ejabberd_sql:sql_query(LServer, Query), {selected, ok, [[<<"0">>]]}};
                   only_count ->
                       {{selected, ok, []}, ejabberd_sql:sql_query(LServer, CountQuery)}
               end,
    case QRes of
        {{selected, _, Res}, {selected, _, [[Count]]}} ->
            {Max, Direction, _} = get_max_direction_id(RSM),
            {Res1, IsComplete} =
            if Max >= 0 andalso Max /= undefined andalso length(Res) > Max ->
                if Direction == before ->
                    {lists:nthtail(1, Res), false};
                    true ->
                        {lists:sublist(Res, Max), false}
                end;
                true ->
                    {Res, true}
            end,
            MucState = #state{config = #config{anonymous = true}},
            JidArchiveS = jid:encode(jid:remove_resource(JidArchive)),
            {lists:flatmap(
                fun([TS, XML, PeerBin, Kind, Nick]) ->
                    case make_archive_el(JidArchiveS, TS, XML, PeerBin, Kind, Nick,
                                         MsgType, JidRequestor, JidArchive) of
                        {ok, El} ->
                            [{TS, binary_to_integer(TS), El}];
                        {error, _} ->
                            []
                    end;
                   ([User, TS, XML, PeerBin, Kind, Nick]) when User == LUser ->
                       case make_archive_el(JidArchiveS, TS, XML, PeerBin, Kind, Nick,
                                            MsgType, JidRequestor, JidArchive) of
                           {ok, El} ->
                               [{TS, binary_to_integer(TS), El}];
                           {error, _} ->
                               []
                       end;
                   ([User, TS, XML, PeerBin, Kind, Nick]) ->
                       case make_archive_el(User, TS, XML, PeerBin, Kind, Nick,
                                            {groupchat, member, MucState}, JidRequestor,
                                            jid:decode(User)) of
                           {ok, El} ->
                               mod_mam:wrap_as_mucsub([{TS, binary_to_integer(TS), El}],
                                                      JidRequestor);
                           {error, _} ->
                               []
                       end
                end, Res1), IsComplete, binary_to_integer(Count)};
        _ ->
            {[], false, 0}
    end.

export(_Server) ->
    [{archive_prefs,
      fun(Host, #archive_prefs{us =
                {LUser, LServer},
                default = Default,
                always = Always,
                never = Never})
          when LServer == Host ->
                SDefault = erlang:atom_to_binary(Default, utf8),
                SAlways = misc:term_to_expr(Always),
                SNever = misc:term_to_expr(Never),
                [?SQL_INSERT(
                    "archive_prefs",
                    ["username=%(LUser)s",
                     "server_host=%(LServer)s",
                     "def=%(SDefault)s",
                     "always=%(SAlways)s",
                     "never=%(SNever)s"])];
          (_Host, _R) ->
              []
      end},
     {archive_msg,
      fun([Host | HostTail], #archive_msg{us ={LUser, LServer},
                id = _ID, timestamp = TS, peer = Peer,
                type = Type, nick = Nick, packet = Pkt, origin_id = OriginID})
          when (LServer == Host) or ([LServer] == HostTail)  ->
                TStmp = misc:now_to_usec(TS),
                SUser = case Type of
                      chat -> LUser;
                      groupchat -> jid:encode({LUser, LServer, <<>>})
                    end,
                BarePeer = jid:encode(jid:tolower(jid:remove_resource(Peer))),
                LPeer = jid:encode(jid:tolower(Peer)),
                XML = fxml:element_to_binary(Pkt),
                Body = fxml:get_subtag_cdata(Pkt, <<"body">>),
                SType = misc:atom_to_binary(Type),
                SqlType = ejabberd_option:sql_type(Host),
                case SqlType of
                        mssql -> [?SQL_INSERT(
                            "archive",
                            ["username=%(SUser)s",
                             "server_host=%(LServer)s",
                             "timestamp=%(TStmp)d",
                             "peer=%(LPeer)s",
                             "bare_peer=%(BarePeer)s",
                             "xml=N%(XML)s",
                             "txt=N%(Body)s",
                             "kind=%(SType)s",
                             "nick=%(Nick)s",
                             "origin_id=%(OriginID)s"])];
                        _ -> [?SQL_INSERT(
                            "archive",
                            ["username=%(SUser)s",
                             "server_host=%(LServer)s",
                             "timestamp=%(TStmp)d",
                             "peer=%(LPeer)s",
                             "bare_peer=%(BarePeer)s",
                             "xml=%(XML)s",
                             "txt=%(Body)s",
                             "kind=%(SType)s",
                             "nick=%(Nick)s",
                             "origin_id=%(OriginID)s"])]
                            end;
         (_Host, _R) ->
              []
      end}].

is_empty_for_user(LUser, LServer) ->
    case ejabberd_sql:sql_query(
           LServer,
           ?SQL("select @(1)d from archive"
                " where username=%(LUser)s and %(LServer)H limit 1")) of
        {selected, [{1}]} ->
            false;
        _ ->
            true
    end.

is_empty_for_room(LServer, LName, LHost) ->
    LUser = jid:encode({LName, LHost, <<>>}),
    is_empty_for_user(LUser, LServer).

%%%===================================================================
%%% Internal functions
%%%===================================================================
make_sql_query(User, LServer, MAMQuery, RSM, ExtraUsernames) ->
    Start = proplists:get_value(start, MAMQuery),
    End = proplists:get_value('end', MAMQuery),
    With = proplists:get_value(with, MAMQuery),
    WithText = proplists:get_value(withtext, MAMQuery),
    {Max, Direction, ID} = get_max_direction_id(RSM),
    ODBCType = ejabberd_option:sql_type(LServer),
    ToString = fun(S) -> ejabberd_sql:to_string_literal(ODBCType, S) end,
    LimitClause = if is_integer(Max), Max >= 0, ODBCType /= mssql ->
                          [<<" limit ">>, integer_to_binary(Max+1)];
                     true ->
                          []
                  end,
    TopClause = if is_integer(Max), Max >= 0, ODBCType == mssql ->
                          [<<" TOP ">>, integer_to_binary(Max+1)];
                     true ->
                          []
                  end,
    SubOrderClause = if LimitClause /= []; TopClause /= [] ->
                          <<" ORDER BY timestamp DESC ">>;
                     true ->
                          []
                  end,
    WithTextClause = if is_binary(WithText), WithText /= <<>> ->
                             [<<" and match (txt) against (">>,
                              ToString(WithText), <<")">>];
                        true ->
                             []
                     end,
    WithClause = case catch jid:tolower(With) of
                     {_, _, <<>>} ->
                         [<<" and bare_peer=">>,
                          ToString(jid:encode(With))];
                     {_, _, _} ->
                         [<<" and peer=">>,
                          ToString(jid:encode(With))];
                     _ ->
                         []
                 end,
    PageClause = case catch binary_to_integer(ID) of
                     I when is_integer(I), I >= 0 ->
                         case Direction of
                             before ->
                                 [<<" AND timestamp < ">>, ID];
                             'after' ->
                                 [<<" AND timestamp > ">>, ID];
                             _ ->
                                 []
                         end;
                     _ ->
                         []
                 end,
    StartClause = case Start of
                      {_, _, _} ->
                          [<<" and timestamp >= ">>,
                           integer_to_binary(misc:now_to_usec(Start))];
                      _ ->
                          []
                  end,
    EndClause = case End of
                    {_, _, _} ->
                        [<<" and timestamp <= ">>,
                         integer_to_binary(misc:now_to_usec(End))];
                    _ ->
                        []
                end,
    SUser = ToString(User),
    SServer = ToString(LServer),

    HostMatch = case ejabberd_sql:use_multihost_schema() of
                    true ->
                        [<<" and server_host=", SServer/binary>>];
                    _ ->
                        <<"">>
                end,

    {UserSel, UserWhere} = case ExtraUsernames of
                               Users when is_list(Users) ->
                                   EscUsers = [ToString(U) || U <- [User | Users]],
                                   {<<" username,">>,
                                    [<<" username in (">>, str:join(EscUsers, <<",">>), <<")">>]};
                               subscribers_table ->
                                   SJid = ToString(jid:encode({User, LServer, <<>>})),
                                   RoomName = case ODBCType of
                                                  sqlite ->
                                                      <<"room || '@' || host">>;
                                                  _ ->
                                                      <<"concat(room, '@', host)">>
                                              end,
                                   {<<" username,">>,
                                    [<<" (username = ">>, SUser,
                                        <<" or username in (select ">>, RoomName,
                                          <<" from muc_room_subscribers where jid=">>, SJid, HostMatch, <<"))">>]};
                               _ ->
                                   {<<>>, [<<" username=">>, SUser]}
                           end,

    Query = [<<"SELECT ">>, TopClause, UserSel,
             <<" timestamp, xml, peer, kind, nick"
               " FROM archive WHERE">>, UserWhere, HostMatch,
             WithClause, WithTextClause,
             StartClause, EndClause, PageClause],

    QueryPage =
        case Direction of
            before ->
                % ID can be empty because of
                % XEP-0059: Result Set Management
                % 2.5 Requesting the Last Page in a Result Set
                [<<"SELECT">>, UserSel, <<" timestamp, xml, peer, kind, nick FROM (">>,
                 Query, SubOrderClause,
                 LimitClause, <<") AS t ORDER BY timestamp ASC;">>];
            _ ->
                [Query, <<" ORDER BY timestamp ASC ">>,
                 LimitClause, <<";">>]
        end,
    {QueryPage,
     [<<"SELECT COUNT(*) FROM archive WHERE ">>, UserWhere,
      HostMatch, WithClause, WithTextClause,
      StartClause, EndClause, <<";">>]}.

-spec get_max_direction_id(rsm_set() | undefined) ->
                                  {integer() | undefined,
                                   before | 'after' | undefined,
                                   binary()}.
get_max_direction_id(RSM) ->
    case RSM of
        #rsm_set{max = Max, before = Before} when is_binary(Before) ->
            {Max, before, Before};
        #rsm_set{max = Max, 'after' = After} when is_binary(After) ->
            {Max, 'after', After};
        #rsm_set{max = Max} ->
            {Max, undefined, <<>>};
        _ ->
            {undefined, undefined, <<>>}
    end.

-spec make_archive_el(binary(), binary(), binary(), binary(), binary(),
                      binary(), _, jid(), jid()) ->
                             {ok, xmpp_element()} | {error, invalid_jid |
                                                     invalid_timestamp |
                                                     invalid_xml}.
make_archive_el(User, TS, XML, Peer, Kind, Nick, MsgType, JidRequestor, JidArchive) ->
    case xml_compress:decode(XML, User, Peer) of
        #xmlel{} = El ->
            try binary_to_integer(TS) of
                TSInt ->
                    try jid:decode(Peer) of
                        PeerJID ->
                            Now = misc:usec_to_now(TSInt),
                            PeerLJID = jid:tolower(PeerJID),
                            T = case Kind of
                                    <<"">> -> chat;
                                    null -> chat;
                                    _ -> misc:binary_to_atom(Kind)
                                end,
                            mod_mam:msg_to_el(
                              #archive_msg{timestamp = Now,
                                           id = TS,
                                           packet = El,
                                           type = T,
                                           nick = Nick,
                                           peer = PeerLJID},
                              MsgType, JidRequestor, JidArchive)
                    catch _:{bad_jid, _} ->
                            ?ERROR_MSG("Malformed 'peer' field with value "
                                       "'~ts' detected for user ~ts in table "
                                       "'archive': invalid JID",
                                       [Peer, jid:encode(JidArchive)]),
                            {error, invalid_jid}
                    end
            catch _:_ ->
                    ?ERROR_MSG("Malformed 'timestamp' field with value '~ts' "
                               "detected for user ~ts in table 'archive': "
                               "not an integer",
                               [TS, jid:encode(JidArchive)]),
                    {error, invalid_timestamp}
            end;
        {error, {_, Reason}} ->
            ?ERROR_MSG("Malformed 'xml' field with value '~ts' detected "
                       "for user ~ts in table 'archive': ~ts",
                       [XML, jid:encode(JidArchive), Reason]),
            {error, invalid_xml}
    end.

processone / ejabberd / 1212

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