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2014-11-19Fix blank page issues caused by too strict checkchromium/2250chromium/2249chromium/2248chromium/2247chromium/2246chromium/2245chromium/2244chromium/2243chromium/2242chromium/2241chromium/2240chromium/2239chromium/2238chromium/2237Jun Fang
Before this fix, PDF parser aborts the parsering process when detecting an error. For this case, PDF parser just gives up parsering when it detects that the length of image stream is incorrect. The solution to this case is to find the tag "endstream" and "endobj" to calculate the length rather than aborting the parsering process. BUG=433339 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/743263002
2014-11-18Fixing operator so that bCheckRight isn't always true. Unknown effect!Bruce Dawson
VC++'s /analyze points out that this expression: FX_BOOL bCheckRight = type != 'D' || type != 'W';" is always true. This means that the tests for the right edge of a word Original patch from Bruce Dawson(brucedawson@chromium.org) BUG=427616 R=jun_fang@foxitsoftware.com Review URL: https://codereview.chromium.org/731673003
2014-11-17Zero initialize ch to avoid possible bug - conditions are very subtle.Bruce Dawson
Whether ch and iRet are read without being initialized depends on complex preconditions and cannot be determined by looking at these function. Therefore it seems prudent to zero initialize them to avoid any risk. BUG=427616 R=bo_xu@foxitsoftware.com Review URL: https://codereview.chromium.org/727083002
2014-11-06Fix bug with reading from uninitialized variable found by VC++'s /analyze.Tom Sepez
The flag variable is conditionally initialized but unconditionally read. Warning was: src\fpdfapi\fpdf_page\fpdf_page_pattern.cpp(274) : warning C6001: Using uninitialized memory 'flag'. BUG=427616 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/703213004
2014-10-29Resolve compilation error with G++ 4.9.Tom Sepez
Add a check for zero-length keys to avoid hitting the equivalent of |""[1]|. BUG=https://code.google.com/p/pdfium/issues/detail?id=58 R=jun_fang@foxitsoftware.com Review URL: https://codereview.chromium.org/665223003
2014-10-21Change the clear order of pDocPage and pDocRenderBo Xu
pTransfer function is released in pDocRender cleanup but is still being accessed in ~CPDF_GeneralStateData in pDocPage cleanup. BUG=419320 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/662063003
2014-10-14Store the address of the page data map's value for proper referencing.Bo Xu
CPDF_Pattern objects are counted and maintained in m_PatternedMap. When a CPDF_Pattern object "pattern" is deleted, it's address is marked as NULL in m_PatternMap. This patch stores the address of CPDF_Pattern's adderss in all objects that references "pattern", to ensure valid referencing after deletion. BUG=416319, 419976, 418392 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/656753002
2014-10-14Don't leave dangling pointer to out-of-scope local in ↵Tom Sepez
CPDF_StreamContentParser::Parse. This is just a bit of defensive programming; I'm not sure the situation can occur in the current code, but the following code is likely to set off a red flag to anyone who reads it: CPDF_StreamParser syntax(pData, dwSize); m_pSyntax = &syntax; since the extent of the local |syntax| is far less than the pointer member |m_pSyntax|. NULL it out before syntax goes out of scope. R=jun_fang@foxitsoftware.com Review URL: https://codereview.chromium.org/652063002
2014-10-13Fix off-by-one in sizing of m_EmbeddedToUnicodes.Tom Sepez
BUG=421196 R=bo_xu@foxitsoftware.com Review URL: https://codereview.chromium.org/656463006
2014-09-19Fix a bug when assign the generation number of indirect objectschromium/2166chromium/2165Bo Xu
BUG=408532 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/524443002
2014-09-19Adjust the order of clearing resource in CPDF_DocPageData::ClearJun Fang
Images are basic resource and are referred or used by other objects in some cases. Images should be released after the objects who uses these objects. In this case, an image object is accessed in the process of CPDF_TilingPattern's destroy. Unlikely, this image has been destroyed before. BUG=414046 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/582993002
2014-09-18Fix Regression: Incomplete file loading is seen for multi page pdf files.chromium/2164chromium/2163Tom Sepez
This was introduced at PDFium revision 12a9940. There was a subtle logic change for null |parray|. BUG=415438 R=jun_fang@foxitsoftware.com Review URL: https://codereview.chromium.org/579363002
2014-09-16When forcing clear page data, no need to release colorspace when releasing ↵Bo Xu
pattern BUG=414661 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/572853006
2014-09-15Check Null pointer in CPDF_Dictionary::GetUnicodeTextBo Xu
BUG=414155 R=thakis@chromium.org Review URL: https://codereview.chromium.org/574463002
2014-09-10Check object type for objects used in the dictory of 'Index'chromium/2162chromium/2161chromium/2160chromium/2159chromium/2158chromium/2157chromium/2156Jun Fang
BUG=387970 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/551503003
2014-09-09Change the forced clear order of CPDF_DocPageData::Clear, and remove ↵Bo Xu
m_pDocument in CPDF_Color If not forced clear, the counter of CPDF_Pattern will take care the count of referenced instance. When forced clear, clear color first to make sure pattern still exists when referencing it. BUG=411154 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/554913003
2014-09-08Fix un-initialized R G B valueBo Xu
BUG=411163 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/551513005
2014-09-03Allocate m_pCompData when |m_nComponents| is updated.Bo Xu
When |m_nComponents| is changed from loading stream information, previously allocated memory that depends on |m_nComponents| needes to be freed and allocated again to enforce memory size consistency. BUG=409695 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/528163002
2014-09-02Check m_nComponents when using JBIG2Decodechromium/2146Bo Xu
BUG=409692 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/534763002
2014-09-02Add m_pDocument in CPDF_Color and check if page date has been forced clearBo Xu
This will prevent using freed pattern object. This is a better solution than https://pdfium.googlesource.com/pdfium/+/1b9c5c4dc41956b8c5ab17b9a882adf8a2513768 and in essence revert that patch BUG=409373 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/522483003
2014-08-31Remove the GetValidBpc check in application callers and move it to where ↵Bo Xu
m_bpc is assigned. The problem of using GetValidBpc() in each function call is it could result in mismatch as seen in this case: in ContinueToLoadMask(), m_bpc is re-assigned to 1 if m_bImageMask==1 regardless of the value from GetValidBpc(). This will result in mismatch if another function use the value from GetValidBpc(). The solution could be checking m_bImageMask in another function to make sure m_bpc is consistent, but that makes the code too cumbersome. Also, we have to bring and are bringing in more and more GetValidBpc check, and this will continue with other buggy documents. So better to fix it now. The original rational to use GetValidBpc() in where m_bpc is used is to respect the "raw" data from parsing. However, if it will be ignored anyway and using value from GetValidBpc(), we'd better correct it at the very beginning. BUG=408541 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/518443002
2014-08-28No need to release resources in destructor of CPDF_ShadingObjectchromium/2145chromium/2144chromium/2143chromium/2142chromium/2141chromium/2140Bo Xu
CPDF_DocPageData::~CPDF_DocPageData() will force to release all resources, so no need to do it here, which can result in heap-use-after-free trouble. BUG=408164 R=jun_fang@foxitsoftware.com, tsepez@chromium.org Review URL: https://codereview.chromium.org/513063003
2014-08-27Use valid bpc value in LoadPalette() and ContinueToLoadMask()Bo Xu
BUG=408141, 408147 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/508253003
2014-08-27Fix a bug when looping through m_pCompDataBo Xu
BUG=408154 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/509613005
2014-08-25Set m_pLinearized to NULL after releaseBo Xu
BUG=406868 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/504993002
2014-08-25Perform better input checks in early steps of parser.Tom Sepez
BUG=406591 R=jun_fang@foxitsoftware.com Review URL: https://codereview.chromium.org/501823003
2014-08-25Use number of components from ICC profile and alternate color spaceBo Xu
BUG=406806 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/503883002
2014-08-25Add GetValidBpc() check in CPDF_DIBSource::CreateDecoder()Bo Xu
BUG=406908 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/504673002
2014-08-25Add GetValidBpc() check in CPDF_DIBSource::GetScanLineBo Xu
BUG=406600, 406895 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/497733005
2014-08-25Revert of Use number of components from ICC profile and alternateCS ↵Bo Xu
(patchset #1 of https://codereview.chromium.org/493163003/) Reason for revert: Needs to address comments before landing Original issue's description: > Use number of components from ICC profile and alternate color space > > BUG=406806 > > Committed: https://pdfium.googlesource.com/pdfium/+/be83103 TBR=tsepez@chromium.org,jun_fang@foxitsoftware.com NOTREECHECKS=true NOTRY=true BUG=406806 Review URL: https://codereview.chromium.org/504883003
2014-08-25Use number of components from ICC profile and alternate color spaceBo Xu
BUG=406806 Review URL: https://codereview.chromium.org/493163003
2014-08-22Fix the issue 'SEGV on unknown address in CPDF_DataAvail::GetObjectSize'Jun Fang
BUG=387983 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/454283002
2014-08-22Fix a hang issue due to inconsistent page number in the test fileJun Fang
Pdfium reads the page number from the field of '/Count' but it can't load the number assigned by this field due to the damaged data. Add a check to ensure that the required page should be one of loaded pages. BUG=406090 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/477873003
2014-08-22Check the number of component in ICCBased colorspaceBo Xu
From PDF reference 8.6.5.5, this could only be 1, 3 or 4. BUG=387968 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/464083003
2014-08-21For pattern colorspace, its base colorspace should not be a pattern colorspaceBo Xu
BUG=405588 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/496883002
2014-08-19Fix bug in CPDF_PageContentGenerate constructor and destructorBo Xu
m_pageObjects never gets initialize, thus making CPDF_PageContentGenerate::GenerateContent() doing nothing. Since the CPFD_PageObject are owned by m_pPage, no need to release them in the destructor. BUG=385119 R=thestig@chromium.org, vitalybuka@chromium.org Review URL: https://codereview.chromium.org/470253004
2014-08-18Font is used after release in CPDF_TextStateData::~CPDF_TextStateDataJun Fang
BUG=400996 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/477323002
2014-08-18Add a null pointer check before getting the family name of the given color ↵Jun Fang
space in CPDF_ColorSpace::Load The test file defines a wrong color space object (7 0 obj). In the content of 7 0 obj, the reserved obj (0 0 R) is used. The process of loading color space returns NULL when the reserved obj (0 0 R) is found. For the error color space, it only needs to return NULL when an error is detected. BUG=403032 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/477413002
2014-08-18No need to release m_pBaseCS in CPDF_IndexedCS and CPDF_PatternCSBo Xu
m_pBaseCS will be released in CPDF_DocPageData::Clear. BUG=401372 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/472653002
2014-08-13Add FX_OVERRIDE and use it for virtual functions of FX_FINAL classes.Tom Sepez
Should there be cases where this fails to compile, it indicates a mistake, either an incorrectly declared overrriden virtual method, or a method that should be declared non-virtual. The only issues were with CPDF_CustomAccess::GetBlock(), CPDF_CustomAccess::GetByte(), and CPDF_CustomAccess::GetFullPath(). These don't appear to be used anywhere, and are removed. Two members are removed that are no longer needed once those methods are removed. R=jam@chromium.org, jun_fang@foxitsoftware.com Review URL: https://codereview.chromium.org/454983003
2014-08-12Fix missing or broken include guard macros in pdfium headers.Tom Sepez
This has no ill-effect at present, but may be distracting when viewing the file since it just looks wrong. R=jun_fang@foxitsoftware.com Review URL: https://codereview.chromium.org/461933003
2014-08-12For a CPDF_Color object, when set a new pattern to it, disconnect its link ↵Bo Xu
with the old pattern This patch is related to https://pdfium.googlesource.com/pdfium/+/1b9c5c4dc41956b8c5ab17b9a882adf8a2513768 BUG=402260 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/460383004
2014-08-05Fix the problem that memory is accessed after released due to invalid type-castJun Fang
BUG=387774 R=palmer@chromium.org, tsepez@chromium.org Review URL: https://codereview.chromium.org/441503003
2014-08-05The root cause of this issue is shown as below:Jun Fang
Patterns are managed in CPDF_DocPageData. When a document is closed, all patterns will be released in the deconstruction of CPDF_DocPageData. However, some patterns which are referenced in CPDF_Color can't get the notification from the destroy of CPDF_DocPageData. It will cause use-after-free in CPDF_Color::~CPDF_Color. BUG=392719 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/439693002
2014-08-04Fix a segmentation fault in CPDF_DataAvail::CheckPage due to invalid usage ↵Jun Fang
of i++ BUG=387979 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/439733002
2014-08-01Add more |bpc| value check in GetValidBpc()Bo Xu
BUG=382988 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/430733004
2014-07-31Correct the names of the FX_SAFE_* typedefs.Chris Palmer
R=jun_fang@foxitsoftware.com Review URL: https://codereview.chromium.org/417263008
2014-07-30Fix uninitialized coords and one of infinite loopsJUN FANG
BUG=387854 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/372453005
2014-07-30Remove a few unused variables, functions, and member variables.Nico Weber
No intended behavior change. BUG=pdfium:29 R=bo_xu@foxitsoftware.com Review URL: https://codereview.chromium.org/426763003
2014-07-30Fix potential integer overflow in fpdf_render_loadimage.cppJUN FANG
BUG=391929 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/419693003
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