From 9b1f2439845e5627a00fb816244af06d77c2d70a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?John=20H=C3=B6gberg?= Date: Wed, 1 Nov 2017 16:53:51 +0100 Subject: Only apply EOS behaviors if there's pending data --- lib/kernel/test/zlib_SUITE.erl | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'lib/kernel/test') diff --git a/lib/kernel/test/zlib_SUITE.erl b/lib/kernel/test/zlib_SUITE.erl index 1afcd155b3..b20d64ec6a 100644 --- a/lib/kernel/test/zlib_SUITE.erl +++ b/lib/kernel/test/zlib_SUITE.erl @@ -652,6 +652,11 @@ api_g_un_zip(Config) when is_list(Config) -> Concatenated = <>, ?m(Concatenated, zlib:gunzip([Comp, Comp])), + %% Don't explode if the uncompressed size is a perfect multiple of the + %% internal inflate chunk size. + ChunkSizedData = <<0:16384/unit:8>>, + ?m(ChunkSizedData, zlib:gunzip(zlib:gzip(ChunkSizedData))), + %% Bad CRC; bad length. BadCrc = bad_crc_data(), ?m(?EXIT(data_error),(catch zlib:gunzip(BadCrc))), -- cgit v1.2.3 From 8cfe9496873fa36eccda939e56bf7a922e945ca9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?John=20H=C3=B6gberg?= Date: Tue, 7 Nov 2017 17:24:55 +0100 Subject: Fix deflateParams on zlib 1.2.11 1.2.11 started bailing when avail_out==0 regardless of whether there's anything to flush or not, and there's no point in adapting the old method since it was vulnerable to bugs in other zlib versions which updated the deflate parameters even on failure. The api_deflateParams test has been expanded accordingly, and two white-box cases in zip_usage has been updated to make fewer assumptions about the output; the validity of the compressed data is what matters, not whether it's exactly the same as the test vector. --- lib/kernel/test/zlib_SUITE.erl | 46 ++++++++++++++++++++++++++++++++++++------ 1 file changed, 40 insertions(+), 6 deletions(-) (limited to 'lib/kernel/test') diff --git a/lib/kernel/test/zlib_SUITE.erl b/lib/kernel/test/zlib_SUITE.erl index 1afcd155b3..6f40c74ee8 100644 --- a/lib/kernel/test/zlib_SUITE.erl +++ b/lib/kernel/test/zlib_SUITE.erl @@ -213,12 +213,46 @@ api_deflateReset(Config) when is_list(Config) -> %% Test deflateParams. api_deflateParams(Config) when is_list(Config) -> + Levels = [none, default, best_speed, best_compression] ++ lists:seq(0, 9), + Strategies = [filtered, huffman_only, rle, default], + Z1 = zlib:open(), ?m(ok, zlib:deflateInit(Z1, default)), - ?m(L when is_list(L), zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, none)), - ?m(ok, zlib:deflateParams(Z1, best_compression, huffman_only)), - ?m(L when is_list(L), zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, sync)), - ?m(ok, zlib:close(Z1)). + + ApiTest = + fun(Level, Strategy) -> + ?m(ok, zlib:deflateParams(Z1, Level, Strategy)), + ?m(ok, zlib:deflateReset(Z1)) + end, + + [ ApiTest(Level, Strategy) || Level <- Levels, Strategy <- Strategies ], + + ?m(ok, zlib:close(Z1)), + + FlushTest = + fun FlushTest(Size, Level, Strategy) -> + Z = zlib:open(), + ok = zlib:deflateInit(Z, default), + Data = gen_determ_rand_bytes(Size), + case zlib:deflate(Z, Data, none) of + [<<120, 156>>] -> + %% All data is present in the internal zlib state, and will + %% be flushed on deflateParams. + + ok = zlib:deflateParams(Z, Level, Strategy), + Compressed = [<<120, 156>>, zlib:deflate(Z, <<>>, finish)], + Data = zlib:uncompress(Compressed), + zlib:close(Z), + + FlushTest(Size + (1 bsl 10), Level, Strategy); + _Other -> + ok + end + end, + + [ FlushTest(1, Level, Strategy) || Level <- Levels, Strategy <- Strategies ], + + ok. %% Test deflate. api_deflate(Config) when is_list(Config) -> @@ -762,13 +796,13 @@ zip_usage({run,ZIP,ORIG}) -> ?m(ok, zlib:deflateInit(Z, default, deflated, -15, 8, default)), C2 = zlib:deflate(Z, ORIG, finish), - ?m(true, C1 == list_to_binary(C2)), + ?m(ORIG, zlib:unzip(C2)), ?m(ok, zlib:deflateEnd(Z)), ?m(ok, zlib:deflateInit(Z, none, deflated, -15, 8, filtered)), ?m(ok, zlib:deflateParams(Z, default, default)), C3 = zlib:deflate(Z, ORIG, finish), - ?m(true, C1 == list_to_binary(C3)), + ?m(ORIG, zlib:unzip(C3)), ?m(ok, zlib:deflateEnd(Z)), ok = zlib:close(Z), -- cgit v1.2.3 From e96969083dbfebfaaa600d2ba6c2cf6d5a690cbe Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?John=20H=C3=B6gberg?= Date: Tue, 7 Nov 2017 17:31:18 +0100 Subject: Avoid WindowBits=8 as per the manual The docs for zlib:deflateInit/6 explicitly mention that 8 is broken and should not be used unless we know for certain that our zlib version supports it. --- lib/kernel/test/zlib_SUITE.erl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib/kernel/test') diff --git a/lib/kernel/test/zlib_SUITE.erl b/lib/kernel/test/zlib_SUITE.erl index 6f40c74ee8..6d4e21b8cf 100644 --- a/lib/kernel/test/zlib_SUITE.erl +++ b/lib/kernel/test/zlib_SUITE.erl @@ -166,7 +166,7 @@ api_deflateInit(Config) when is_list(Config) -> ?m(ok, zlib:deflateInit(Z12,default,deflated,-Wbits,8,default)), ?m(ok,zlib:close(Z11)), ?m(ok,zlib:close(Z12)) - end, lists:seq(8, 15)), + end, lists:seq(9, 15)), lists:foreach(fun(MemLevel) -> Z = zlib:open(), -- cgit v1.2.3