CERBERUS/mtproto_proxy
1
0
Fork 0
mirror of https://github.com/seriyps/mtproto_proxy.git synced 2026-08-04 15:19:47 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Revert mtp_full padding changes

Browse source
This commit is contained in:
Sergey Prokhorov 2019-07-25 16:06:44 +02:00
parent 1429cfe267
commit ddc04d678d
No known key found for this signature in database
GPG key ID: 1C570244E4EF3337
1 changed files with 5 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

11
src/mtp_full.erl
View file

@ -38,6 +38,9 @@ new(EncSeqNo, DecSeqNo) ->
#full_st{enc_seq_no = EncSeqNo,
dec_seq_no = DecSeqNo}.
try_decode_packet(<<4:32/little, Tail/binary>>, S) ->
%% Skip padding
try_decode_packet(Tail, S);
try_decode_packet(<<Len:32/little, PktSeqNo:32/signed-little, Tail/binary>>,
#full_st{dec_seq_no = SeqNo} = S) ->
((Len rem byte_size(?PAD)) == 0)
@ -52,18 +55,14 @@ try_decode_packet(<<Len:32/little, PktSeqNo:32/signed-little, Tail/binary>>,
PacketCrc = erlang:crc32([<<Len:32/little, PktSeqNo:32/little>> | Body]),
(CRC == PacketCrc)
orelse error({wrong_checksum, CRC, PacketCrc}),
{ok, Body, skip_padding(Len, Rest), S#full_st{dec_seq_no = SeqNo + 1}};
%% TODO: can we drop padding in-advance?
{ok, Body, Rest, S#full_st{dec_seq_no = SeqNo + 1}};
_ ->
{incomplete, S}
end;
try_decode_packet(_, S) ->
{incomplete, S}.
skip_padding(PktLen, Bin) ->
PaddingSize = padding_size(PktLen),
<<_:PaddingSize/binary, Tail/binary>> = Bin,
Tail.
encode_packet(Bin, #full_st{enc_seq_no = SeqNo} = S) ->
BodySize = iolist_size(Bin),