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game: Consolidate command 0503 parsing to prevent tampering as much as possible.

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This commit is contained in:
Loïc Hoguin 2010-05-26 10:47:30 +02:00
parent 7e32314760
commit 4466c77ec5
1 changed files with 5 additions and 3 deletions
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8
src/egs_game.erl
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@ -361,8 +361,11 @@ dispatch(CSocket, GID, Version, Packet) ->
%% @doc Position change broadcast handler. Save the position and then dispatch it. %% @doc Position change broadcast handler. Save the position and then dispatch it.
broadcast(16#0503, GID, Packet) -> broadcast(16#0503, GID, Packet) ->
<< _:320, _:96, Direction:32/bits, _:96, Coords:96/bits, Quest:32/little-unsigned-integer, MapType:32/little-unsigned-integer, LID = 0, % TODO: handle the LID correctly
MapNumber:32/little-unsigned-integer, MapEntry:32/little-unsigned-integer, _/bits >> = Packet, << 100:32/little-unsigned-integer, 16#050301:24/unsigned-integer, _:40, 0:32, GID:32/little-unsigned-integer, 0:192,
GID:32/little-unsigned-integer, LID:32/little-unsigned-integer, Direction:32/bits, _:96, Coords:96/bits,
Quest:32/little-unsigned-integer, MapType:32/little-unsigned-integer, MapNumber:32/little-unsigned-integer, MapEntry:32/little-unsigned-integer,
_:16, 0:16 >> = Packet,
User = egs_db:users_select(GID), User = egs_db:users_select(GID),
NewUser = User#users{direction=Direction, coords=Coords, quest=Quest, maptype=MapType, mapnumber=MapNumber, mapentry=MapEntry}, NewUser = User#users{direction=Direction, coords=Coords, quest=Quest, maptype=MapType, mapnumber=MapNumber, mapentry=MapEntry},
egs_db:users_insert(NewUser), egs_db:users_insert(NewUser),
@ -390,7 +393,6 @@ broadcast(Command, GID, Packet)
Command =:= 16#0107; Command =:= 16#0107;
Command =:= 16#010f; Command =:= 16#010f;
Command =:= 16#050f; Command =:= 16#050f;
Command =:= 16#0514;
Command =:= default -> Command =:= default ->
<< _:32, A:64/bits, _:64, B:192/bits, _:64, C/bits >> = Packet, << _:32, A:64/bits, _:64, B:192/bits, _:64, C/bits >> = Packet,
case egs_db:users_select(GID) of case egs_db:users_select(GID) of