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2018-08-08Move ByteString::FromUnicode() to WideString::ToDefANSI()Tom Sepez
Turns out that "FromUnicode" is misleading in that, on linux, it simply removes any characters beyond 0xFF and passes the rest unchanged, so no unicode decoding actually takes place. On Windows, it passes it into the system function specifying FX_CODEPAGE_DefANSI, converting it into the so-called "default ANSI code plane", passing some characters, converting others to '?' and still others to 'A'. Either way, nothing resembling UTF8 comes out of this, so pick a better name. These now immediately look suspicious, so a follow-up CL will see which ones should really be WideString::UTF8Encode() instead. Making this a normal method on a widestring rather than a static method on a bytestring feels more natural; this is parallel to the UTF8Encode and UTF16LE_Encode functions. Add a test that shows these conversions. Change-Id: Ia7551b47199eba61b5c328a97bfe9176ac8e583c Reviewed-on: https://pdfium-review.googlesource.com/39690 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-07Move CPDF_Font::LoadPDFEncoding() to CPDF_SimpleFont.Lei Zhang
It is not used in the CPDF_Font base class. Change-Id: I6033a5dd422179eb95f19a2f2ecf06d007f3223f Reviewed-on: https://pdfium-review.googlesource.com/39493 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-07Change CPDF_Font::GetFace() to HasFace().Lei Zhang
Callers do not actually need the returned handle. Change-Id: I1b8c0be00809eb7fdae9f6e95b4b325e75f4b847 Reviewed-on: https://pdfium-review.googlesource.com/39491 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-07Make CPDF_Font::GetFontBBox() return the bounding box.Lei Zhang
Instead of using an out parameter. Fix nits in the only caller as well. Change-Id: I04eb92705b2fbda001191c36da972eee499acbc7 Reviewed-on: https://pdfium-review.googlesource.com/39490 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-07Remove unused codepage code from GetByteString().Tom Sepez
It is only called ever called from one place with 0 (FX_CODEPAGE_DefANSI), with more complicated usage being funneled directly into FXSYS_ code. Next, fold it into ByteString::FromUnicode(). Change-Id: I85aa0dd3a4ca8cddcff22533e0a284ff3f5535ee Reviewed-on: https://pdfium-review.googlesource.com/39670 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-07Add FPDFTextObj_GetText() APIMiklos Vajna
Generalize CPDF_TextPage::GetTextByRect(), so that it's possible to get the text from a text page using a predicate, that way we can easily get the text that belongs to single text object as well. Change-Id: Ia457af0f41184694dc1481709be72b35685bce7f Reviewed-on: https://pdfium-review.googlesource.com/39530 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-07Add test for {Byte,Wide}String Operator+().Tom Sepez
Precursor to converting some Format() operations to simple string addition. Change-Id: I3a159f5ac548ea14586d87e7d56d1ec288898b0d Reviewed-on: https://pdfium-review.googlesource.com/39590 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-07Combine redundant CJBig2_Image code.Tom Sepez
Once upon a time, someone cut-n-pasted ~300 lines of code to avoid creating a default rectangle and to save a couple of additions. Then one path got one set of fixes (safe ints) and the other path got a second set of fixes (source bounds checks). Re-unify, picking up all the fixes, since they are identical otherwise. Change-Id: I099e854bc8ad027efabd5c2077c4319ee8221256 Reviewed-on: https://pdfium-review.googlesource.com/39550 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-07Speculative fix for null deref above ThrowNoDefaultPropertyExceptionTom Sepez
Avoid possibility of an unterminated string or nullptr by avoiding stringviews, since the non-view classes copy and always provide a suitable result. Always use %ls and widestrings in wprintf() variants, since that combination is consistent across our platforms (%s, %S, etc. have idiosyncracies). Bug: 870952 Change-Id: Ief62a42c3486e8298f9583b56e9333db1a74972a Reviewed-on: https://pdfium-review.googlesource.com/39551 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-06Avoid invalid object numbers in CPDF_Parser::LoadCrossRefV5().chromium/3515Lei Zhang
BUG=chromium:865272 Change-Id: I4606bdfd78ebd6553c36b985b4f49d07b579ac40 Reviewed-on: https://pdfium-review.googlesource.com/39438 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Art Snake <art-snake@yandex-team.ru>
2018-08-06Small optimization in CJBig2_Image::SubImage()Tom Sepez
We can use the memcpy() path whenever byte aligned. Split code into helper methods. Add test for fast path specifically. Change-Id: I52f6129b0e788eb2da60536cfa6fce12a0609375 Reviewed-on: https://pdfium-review.googlesource.com/39432 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-06Check for null object type in CPDF_Parser::LoadCrossRefV5().Lei Zhang
BUG=chromium:871042 Change-Id: Id4566b29270ab738c69d46cb96fc134485d6ee2f Reviewed-on: https://pdfium-review.googlesource.com/39510 Reviewed-by: Art Snake <art-snake@yandex-team.ru> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-06Do more CPDF_Parser::LoadCrossRefV5() cleanup.Lei Zhang
- Use range for-loop to avoid needing "i" and "j". - Avoid repeatedly calculating "startnum + j". - Reduce levels of nested ifs. - Remove variable that is only used once. Change-Id: I9d08cef1082812fcfaa2699f65720165c52ebcff Reviewed-on: https://pdfium-review.googlesource.com/39437 Reviewed-by: Art Snake <art-snake@yandex-team.ru> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-06Clean up a nit that was identified after CQing an earlier CLRyan Harrison
Change check to use empty instead of size <= 0. Also added a comment to the check to make it clear what is being guarded against BUG=chromium:863098 Change-Id: I993085c04ab66a9e2869c83d8fb48883ec0bbf71 Reviewed-on: https://pdfium-review.googlesource.com/39497 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-04Use more text object state in DrawTextPathWithPattern().chromium/3514chromium/3513chromium/3512Lei Zhang
BUG=chromium:668762 Change-Id: Iaf3fc9bcf68b8da2c947bbd78c5d72f78195b621 Reviewed-on: https://pdfium-review.googlesource.com/35991 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-04Clarify integer types in CPDF_Parser::LoadCrossRefV5().Lei Zhang
GetVarInt() returns uint32_t. So assign the results to variables of type uint32_t. Then make sure those results get passed on as uint32_t, or use pdfium::base::IsValueInRangeForNumericType<T>() to make sure they can be converted to type T safely. Change-Id: I4556f0b89b4e5cdb99ab530119c8051ec8a9411d Reviewed-on: https://pdfium-review.googlesource.com/39436 Reviewed-by: Art Snake <art-snake@yandex-team.ru> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-04Set the CPDF_Font doc / font dict in the ctor.Lei Zhang
Then we can mark the doc pointer as const because it never changes again. Also move initialization to headers when possible, add missing dtors, and fix some nits. Change-Id: I461affc8dce14d805b935fb4d8b5aaafb058a789 Reviewed-on: https://pdfium-review.googlesource.com/39413 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-03Make CFX_XMLParser less permissiveRyan Harrison
Currently the parser will accept arbitrary garbage before the first element begins. This is causing issues with ClusterFuzz since it generates a lot of trash inputs which take a long time to parse inspite of being invalid. This CL adds in a check of how deep the parse is when dealing with text, and if it is at the top level scope, then only accept the beginning of the root node. BUG=chromium:863098 Change-Id: Ie45114ecf488f7e8a68a120d153033c7089d5cdc Reviewed-on: https://pdfium-review.googlesource.com/39470 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2018-08-02Use more helper macros/methods in JBig2_Image.cpp.Tom Sepez
Bundling the test with the accessor is a safer pattern than performing the check externally. Add test for CopyLine(). Change-Id: I7056bf33bdca40cb84a89e4928567a389d88ff1c Reviewed-on: https://pdfium-review.googlesource.com/39431 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-02Fix some nits in SkiaState.Lei Zhang
Change-Id: Id52bb57efea2a6a46bea645e4f3e54957982a40b Reviewed-on: https://pdfium-review.googlesource.com/39154 Reviewed-by: Cary Clark <caryclark@google.com> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-02Skia Path: Fix text/xform size mismatch when calling drawTextRSXform().Lei Zhang
BUG=chromium:751423 Change-Id: I2fcc46b80e89cb651e255bd1fd2d6883a05cf9c7 Reviewed-on: https://pdfium-review.googlesource.com/39153 Reviewed-by: Cary Clark <caryclark@google.com> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-02Tidy JBig2_Image.cppchromium/3511Tom Sepez
Add checked/unchecked GetLine(y) methods and use them. Introduce BIT_INDEX_TO_ALIGNED_BYTE() to de-mystify some shifting. Move local declarations to spot of use. Remove spurious Fill(), as we initialize to 0s. Initialize members in header where possible. Add unit tests. Change-Id: I41ccb91b57320dbc790fd0f680f6d98571280343 Reviewed-on: https://pdfium-review.googlesource.com/39370 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-02Rework of CPDF_DataAvail::CheckHintTables.Artem Strygin
Move HintTables parsing logic into CPDF_HintTables. Change-Id: I9748179fe9fc3ac44f88c19c347e30c0e7e3ac67 Reviewed-on: https://pdfium-review.googlesource.com/38771 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Art Snake <art-snake@yandex-team.ru>
2018-08-02Introduce JBIG2_PUTDWORD() macro in CJBIG2_Image.hTom Sepez
Provide symmetry with JBIG2_GETDWORD(). Avoid potential illegal undefined signed shift in JBIG2_GETDWORD(). Get better column alignment under cl-format via pointless shift by zeros for consistency. Change-Id: I13d46fe7976074e26df72b58a055788390191364 Reviewed-on: https://pdfium-review.googlesource.com/39430 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-02Remove some checks in IsLinearizedHeaderValid().Lei Zhang
One check can never fail. The other check can be done earlier, before creating the CPDF_LinearizedHeader. Change-Id: I0bccb2a9e19e0d5517daf96684adba6bb3a203bf Reviewed-on: https://pdfium-review.googlesource.com/39412 Reviewed-by: Art Snake <art-snake@yandex-team.ru> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-02Rework of CPDF_Parser::GetLastObjNum.Artem Strygin
Change-Id: I0481774858a9d9823580e1207807e35be8a9eea9 Reviewed-on: https://pdfium-review.googlesource.com/36270 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Art Snake <art-snake@yandex-team.ru>
2018-08-01Bounds check lineSrc in JBig2_Image.cpp.Tom Sepez
No matter how the dimensions might be determined, we know the hard end of the source line, and can use it for a bounds check. We expect the size is quantized to a multiple of m_stride, so as long as each block operates within an m_stride, the initial check should be sufficient. Bug: 867501 Change-Id: Iaf9936557b856f3eb09fef522f3e6738aa4f38f0 Reviewed-on: https://pdfium-review.googlesource.com/39310 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-07-30Check maximum bit count of shared group object numbers.Artem Strygin
Bug: chromium:868477 Change-Id: I5957c5ef051bc4fa8eb51efa6a7fc142996742c5 Reviewed-on: https://pdfium-review.googlesource.com/39130 Commit-Queue: Art Snake <art-snake@yandex-team.ru> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-07-28Add ToXML{Instruction,Text,CharData}() checked conversion functionsTom Sepez
All usages were previously checked correctly, but this consolidates some code as well. Change-Id: I63711748b31b698a3f21f98fdb536db1e9e0b1cf Reviewed-on: https://pdfium-review.googlesource.com/39010 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-07-27Make pdfium_embeddertests pass on Windows 10.Lei Zhang
BUG=chromium:828177 NOTRY=true Change-Id: I30123087bbe11aaaa6175b5f729b7ab55107a975 Reviewed-on: https://pdfium-review.googlesource.com/38902 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-07-27Merge several methods into JBig2GrdProc::DecodeArithTemplateUnoptchromium/3505Nicolas Pena
This CL merges DecodeArithTemplateXUnopt for X=0,1,2. This is similar to how three methods were merged into DecodeArithOpt3. Change-Id: Ib0d4f14de6a8c924517d82eaec7577961503a325 Reviewed-on: https://pdfium-review.googlesource.com/38935 Commit-Queue: Nicolás Peña Moreno <npm@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2018-07-27Parse obj nums range within Hint tables for shared groups.Artem Strygin
Change-Id: Ib22db6c57d2066ef70c0ef12e44d1e5eee6611a5 Reviewed-on: https://pdfium-review.googlesource.com/36410 Commit-Queue: Art Snake <art-snake@yandex-team.ru> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-07-26Use moar ToXMLElement() in place of static_cast<>.Tom Sepez
Introduces checks in a few new places, but mainly just consolidates checking/casting logic. Change-Id: I634a03060d254db099972c6978249992367e146c Reviewed-on: https://pdfium-review.googlesource.com/38900 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-07-25Remove some ASSERT (and cast) in favor of checked cases.Tom Sepez
Because it is a stronger pattern at runtime. These were found by essentially: grep -ni '\bassert\b.*type' Change-Id: I913d77139053e8980528597a6633e1859e5204c4 Reviewed-on: https://pdfium-review.googlesource.com/38890 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-07-25Use incomplete type CFX_BmpContext in place of void*chromium/3503Tom Sepez
Allows killing off static_cast<> in two places. Change-Id: I467b69d92e8cbda5c2916b6ed2e97c173d8b4f2f Reviewed-on: https://pdfium-review.googlesource.com/38897 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-07-25Change GetHeaderOffset() to return Optional<FX_FILESIZE>.Lei Zhang
Remove |kInvalidHeaderOffset|. Change-Id: I5978e745e97aa4e13299dd21028721725ac0c996 Reviewed-on: https://pdfium-review.googlesource.com/38853 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Art Snake <art-snake@yandex-team.ru>
2018-07-25Create popup with Contents only for same annotations subtypes.Henrique Nakashima
The subtypes are listed in "PDF Reference 1.7", page 617. Bug: chromium:856331 Change-Id: I41d6094949ff22007a72ef7c1493c413c5af5f7b Reviewed-on: https://pdfium-review.googlesource.com/38790 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-07-25Remove CFX_MemoryStream uses in tests.Lei Zhang
Replace with CFX_BufferSeekableReadStream, which allows for spans and const inputs. Change CXFA_DocumentParser to take IFX_SeekableReadStream instead of IFX_SeekableStream in the process. Change-Id: I0168451350c9fc250231f0414c38738a4d86ca42 Reviewed-on: https://pdfium-review.googlesource.com/38852 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-07-25Use struct {Single,Range}Cmap in FPDFAPI_CIDFromCharCode().Tom Sepez
Clearer that just using indexing off of raw pointers, and makes the code more closely resemble other functions. Change-Id: I7cc8363b505e66120bc1c686bb23b2bdf8fc401f Reviewed-on: https://pdfium-review.googlesource.com/38894 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-07-25Change CFX_BufferSeekableReadStream to take a span.Lei Zhang
Change-Id: Ib9e20fdfc637b2ba0358586e23ad72454b0b8ad1 Reviewed-on: https://pdfium-review.googlesource.com/38851 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2018-07-25Only build cfx_fileaccess_windows.cpp on Windows.Lei Zhang
- Remove #if guards in the .cpp file and flip the #if guard in the header to produce an error when incorrectly included. - Do the same for cfx_fileaccess_posix.cpp. - Also remove forward declarations for win32 APIs. Change-Id: I81056ea6198d342e62744bd3240b3a28ac53d5c0 Reviewed-on: https://pdfium-review.googlesource.com/38410 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-07-25Move CPDF_SyntaxParser init methods into ctor.Lei Zhang
- CPDF_SyntaxParser can no longer be initialized multiple times. - Make the file length and header offset const. - Make the header offset type FX_FILESIZE consistently. - Simplify for the common case where the header offset is 0. Change-Id: I7138db1fbcec3b7578b0239b92fc1154fa4dc4ce Reviewed-on: https://pdfium-review.googlesource.com/38850 Reviewed-by: Art Snake <art-snake@yandex-team.ru> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-07-25Introduce ToXMLElement() checked downcast helper functionTom Sepez
And use it in place of ASSERT() that the type was correct. Since we can check it, doing so at runtime may help avoid type confusion, and we'll get a nice safe SEGV if the asserted condition ever fails. Change-Id: I46b65a4b70e819a670d7cad7966e0d100f0d9a63 Reviewed-on: https://pdfium-review.googlesource.com/38810 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-07-25Fix hint tables parsing.Artem Strygin
Sample PDF: https://yadi.sk/d/oWLtAEfy3YbEb3 For offsets, equal to the hint stream offset, added hint stream length to determine the actual offset, because linearization inserted the hint stream at the original location of the object. Also the number of bits needed to represent the numerator of the fractional position for each shared object reference may be zero, if each shared group contains only one object with obj num, incremented on 1. Change-Id: I4754d603f388354821e8d0cac97ad99a7578fe4b Reviewed-on: https://pdfium-review.googlesource.com/36610 Commit-Queue: Art Snake <art-snake@yandex-team.ru> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-07-25Use document size instead of file size while parsing.Artem Strygin
We should use document size instead of File size, because all offsets and sizes was read from document should take into account of header offset. Added some tests of parsing of documents with header offset. Also drop friendship of CPDF_SyntaxParser with CPDF_Parser. Change-Id: Iebec75ab2ee07fb644a6c653b4ef5c2e09af09fe Reviewed-on: https://pdfium-review.googlesource.com/35830 Commit-Queue: Art Snake <art-snake@yandex-team.ru> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-07-24Fix encryption dictionary owning.Artem Strygin
Return encryption dictionary as const reference from CPDF_Parser. Create a copy in CPDF_Creator if needed. Change-Id: I270f71d307d818fba7f65ebe379f5942ae816934 Reviewed-on: https://pdfium-review.googlesource.com/38390 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Art Snake <art-snake@yandex-team.ru>
2018-07-23Rework of CPDF_Object writing.Artem Strygin
Move writing logic into implementation of related clases. Change-Id: If70dc418b352b562ee681ea34fa6595d6f52eee3 Reviewed-on: https://pdfium-review.googlesource.com/36350 Commit-Queue: Art Snake <art-snake@yandex-team.ru> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2018-07-23Add support of rebuilding crossrefs with compressed objects.Artem Strygin
Change-Id: I0743c34f0206f85828570430edb9f62b6b0cdbb5 Reviewed-on: https://pdfium-review.googlesource.com/37315 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Art Snake <art-snake@yandex-team.ru>
2018-07-20Rework of CPDF_Parser::RebuildCrossRef.chromium/3498Artem Strygin
Use CPDF_SyntaxParser logic to rebuild crossref. Change-Id: I394f64e76294b97c6a7c2b8984a880712fd193a7 Reviewed-on: https://pdfium-review.googlesource.com/37314 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Art Snake <art-snake@yandex-team.ru>
2018-07-19Make FX stream internal details more private to .cpp files.Tom Sepez
Makes the generic fx_streams.h header pull in lots less OS-specific cluter. Combine and de-virtualize the windows struct. Change-Id: I836b9efb00b25dbd1b8f814645dd31a0f04bb4f4 Reviewed-on: https://pdfium-review.googlesource.com/38330 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
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