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2018-08-10Add proxy for syscall timeRyan Harrison
This CL adds a proxy, FXSYS_time, for the time syscall, so that a testing mechanism can be implemented. Specically there is now a flag for pdfium_test, --time=, that allows setting the time since the epoch that will be returned. This plumbed all the way down into the proxy and allows for stable results for tests that depend on getting the current time. There are other places in the code base that will need to be patched like this, that will be dealt with in follow on CLs. BUG=pdfium:1104 Change-Id: I2de185f8d47abe46704dd579c13a54948b7f81e0 Reviewed-on: https://pdfium-review.googlesource.com/39750 Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-08-10Remove |typedef struct| in favor of just |struct|.Tom Sepez
Because I saw one in some other code and decided to hunt them all. These are all defined in C++ context, so no chance of C compatiblity. Note that such a declaration without a struct tag will bypass the [chromium-style] out-of-line constructor/destructor warnings, so add constructors/destructors where required. Change-Id: Ib821d8bc2f68ccf7028b0f73432e8e7c93a953ba Reviewed-on: https://pdfium-review.googlesource.com/39851 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-10Consolidate const_casts<> in FXFT_Get_Name_Index()Tom Sepez
There's a missing const in a qualifier in the third party FT library header, so rather than casting on every invocation, consolidate these into our wrapper macro. This may be easier to remove should the API ever get corrected. Part of the war on const_cast<>. Change-Id: I80cdb220730f40297e54aee10acc8bbd2c983b6d Reviewed-on: https://pdfium-review.googlesource.com/39850 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-10Make CFX_ImageTransformer::CalcData's bitmap non-const.Lei Zhang
Change-Id: I1d5e3e73804efb0a8ed467d29777d017935a8824 Reviewed-on: https://pdfium-review.googlesource.com/39833 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-10Fix a JBIG2 decoding regression.Lei Zhang
When trying to sanity check SBNUMINSTANCES for JBIG2 text regions for https://crbug.com/837192, the check did not take data encoding into account. Fix this by assuming there is a potential for 16:1 compression in the lossless encoding. BUG=chromium:871848 Change-Id: I991dacff9fbefa4e302f5ce92a355902ef94308a Reviewed-on: https://pdfium-review.googlesource.com/39790 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-10Remove deprecated flags from fpdf_progressive.h.Lei Zhang
Change-Id: I4fac8d0c9a21f4e8703a43afd2864f84f6228319 Reviewed-on: https://pdfium-review.googlesource.com/39834 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-10Remove const_cast<> from CFX_LZWDecompressor::Decode() caller.Tom Sepez
Because the argument to Decode() can be const. Part of the ongoing war against const_cast<>. Change-Id: I3a8402277dbfc4fd80b1dd60225de57b732713f8 Reviewed-on: https://pdfium-review.googlesource.com/39832 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-10Add CFX_DIBSource::GetWritableScanline().Tom Sepez
Remove a bunch of const_cast<uint8_t*> or equivalent. This will also help when we convert to span<>, since casting spans is a nuisance. Change-Id: I330e5041cbaf33a84425fc4242a3dfacf5ca8011 Reviewed-on: https://pdfium-review.googlesource.com/39831 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-09Move all utf8 decoding under fx_string.hTom Sepez
Put encoder in cfx_utf8encoder.{h,cpp} to parallel decoder. Add tests, and fix one corner case involving 0xff. Change-Id: Ib97540afdc708bcc6280a79c76734ec68ea72690 Reviewed-on: https://pdfium-review.googlesource.com/39770 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-08-09Change CPDF_Font::GetNextChar()'s in-out parameter to pass by pointer.chromium/3518Lei Zhang
Instead of passing by non-const reference. Adjust the override in CPDF_CIDFont and CPDF_CMap::GetNextChar() as well. Change-Id: I0ee6dc21077101cbeeb0e334498075fc463a2d65 Reviewed-on: https://pdfium-review.googlesource.com/39492 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-09Revert "Rework of CPDF_Parser::GetLastObjNum."Lei Zhang
This reverts commit b07deb3fc1f54bd700a66df573bfcbc4bcc1d787. Reason for revert: Causing https://crbug.com/870467 Original change's description: > Rework of CPDF_Parser::GetLastObjNum. > > 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> TBR=thestig@chromium.org,art-snake@yandex-team.ru # Not skipping CQ checks because original CL landed > 1 day ago. Change-Id: I58e23c752a582c21be8ba45e3538e63c0fa64504 Reviewed-on: https://pdfium-review.googlesource.com/39810 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-08-08Remove unused codepage from WideString::GetWideString().Tom Sepez
Consolidate code into sole caller, which always retrieves a string from the "default ANSI code page". Add unit test for this code path. Fix sign extension bug giving bogus 0xffffff80 codepoint uncovered by unit test on non-windows. Note windows result is different because the system conversion routine does actually work. Change-Id: I1c1246b203ee66e9ff0b6fccf97594788bcd0fca Reviewed-on: https://pdfium-review.googlesource.com/39730 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-08Remove include of <time.h> from fpdfsdk/cpdfsdk_datetime.hTom Sepez
Prevent stray calls to get time from the system without explicilty including <time.h> in some .cpp file. This helps to be able to control all the places where PDFium obtains time more carefully. Change-Id: I9d52a00b9d4413e18c98f0476fabe7c5f2cd6574 Reviewed-on: https://pdfium-review.googlesource.com/39710 Commit-Queue: Tom Sepez <tsepez@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
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>
2018-08-08Limit size of expression list in FormCalc parserchromium/3517Ryan Harrison
Limits the number of elements that can be added to the expressions list in the FormCalc parser. This handles cases like long strings of ! repeated, since ! is a valid identifier and identifiers are valid expression, even though it will be no-op. This is another case of something that is valid, but stupid. BUG=chromium:870385 Change-Id: I8e34ce00bcbe4499e0a45bd5dc38541793144481 Reviewed-on: https://pdfium-review.googlesource.com/39630 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Ryan Harrison <rharrison@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>
2018-08-07Remove WideString::Format() from ThrowException() methods.chromium/3516Tom Sepez
No need for variadic printf-like functions, since callers can cobble arguments into a string much more simply. Change-Id: I0e8d6f6a55a3715ef9d5c6940b73ce8bb2220a1a Reviewed-on: https://pdfium-review.googlesource.com/39611 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-08-07Use wide string addition in place of some Format() calls.Tom Sepez
Simpler, faster, and avoids platform idiosyncracies of wprintf(). Change-Id: I91676bc38199ca2c30936094ca145239f915bc53 Reviewed-on: https://pdfium-review.googlesource.com/39610 Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Tom Sepez <tsepez@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>
2018-08-04Do more CBA_FontMap initialization in the ctor and header.Lei Zhang
Change-Id: I705a49198a91b67aa403beea4446095a6a359259 Reviewed-on: https://pdfium-review.googlesource.com/39415 Reviewed-by: Ryan Harrison <rharrison@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>
2018-08-02Handle inline font dicts in CBA_FontMap::AddFontToAnnotDict().Lei Zhang
BUG=chromium:869171 Change-Id: I0176bcafa8a63396d916916b5e10b96573085d04 Reviewed-on: https://pdfium-review.googlesource.com/39414 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@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>
2018-08-02Remove -Wno-pointer-to-int-cast from fxcodec target.Lei Zhang
Presumably, a libopenjpeg upgrade fixed third_party/libopenjpeg20/mct.c. Change-Id: I0e0e593b0cf7f32934ce45b19a54fe556b955448 Reviewed-on: https://pdfium-review.googlesource.com/39411 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
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>
2018-08-02Mark some arrays as constant.Lei Zhang
Fix some nits as well. Change-Id: Iaef79056b68ea0dae7f76c09e7a133cc545896fd Reviewed-on: https://pdfium-review.googlesource.com/39353 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-08-02Simplify CFXJSE_FormCalcContext::unfoldArgs().Lei Zhang
Return results instead of writing them to an out parameter. Remove start index which is always 1. Change-Id: I4b969a1e27679fca56b2cde1a901a8967c7fa8ce Reviewed-on: https://pdfium-review.googlesource.com/39092 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-08-02Remove some parameters that are non-const references.Lei Zhang
Also remove a check that is always false, and simplify another check. Change-Id: I89193eebc84a6fd139b34b890a8c3003a635851b Reviewed-on: https://pdfium-review.googlesource.com/39091 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-08-01Replace more unchecked casts with type conversion funtions.Tom Sepez
Change-Id: If3eb4396232daed28f2b63ffe1d110075c9299de Reviewed-on: https://pdfium-review.googlesource.com/39230 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
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>
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