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2018-01-23Remove GetWidgetAcc callsDan Sinclair
This CL removes the calls to CXFA_Node::GetWidgetAcc() as they redundantly return the node they were called upon. Change-Id: I46e66cf98137a1dee7cd3fa8bc7d379eb97fded5 Reviewed-on: https://pdfium-review.googlesource.com/23630 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-23Merge CXFA_WidgetAcc into CXFA_Nodechromium/3330Dan Sinclair
This CL merges CXFA_WidgetAcc into CXFA_Node. Change-Id: Iab52ca7f98c9dcd4ab089c61b8f1324a565bf647 Reviewed-on: https://pdfium-review.googlesource.com/23610 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-23Remove CXFA_WidgetAcc from CXFA_FFDocView methodsDan Sinclair
This CL updates CXFA_FFDocView methods and members to use CXFA_Node objects instead of CXFA_WidgetAcc objects. Change-Id: Ic79af39ef49152a6d50ed5acfc153063db39353d Reviewed-on: https://pdfium-review.googlesource.com/23590 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-23Cleanup CXFA_FFDocView headerDan Sinclair
This CL removes unused methods, makes internal methods private and removes unused default params. Change-Id: Ic83a97e3f751a49d3f9fc7c157e8d34a62818cd5 Reviewed-on: https://pdfium-review.googlesource.com/23570 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-23Remove unused CXFA_FFDocView::ProcessWidgetEventDan Sinclair
Not called, removed. Change-Id: I2921407ed1b0e13763fcd150a092f4c2b45eb440 Reviewed-on: https://pdfium-review.googlesource.com/23531 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-23Remove CXFA_FFDocView::GetWidgetAccByNameDan Sinclair
This CL folds GetWidgetAccByName back into GetWidgetByName. Change-Id: I48c0aa443c92adfff27c1001f6dc90084b7bc8c3 Reviewed-on: https://pdfium-review.googlesource.com/23530 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-23Use accessor for WidgetAccDan Sinclair
This CL removes places where we store CXFA_WidgetAcc into a variable and uses the accessor from CXFA_Node instead. This will ease the removal of CXFA_WidgetAcc. Change-Id: I7a6cb0079bb119481a5ae60679a537799b3be2c9 Reviewed-on: https://pdfium-review.googlesource.com/23510 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-23Convert CXFA_WidgetAccIterator to CXFA_ReadyNodeIteratorDan Sinclair
This CL converts the WidgetAcc iterator to return nodes in which the OnReady event has been fired. Change-Id: I5ec6809c1610ac3467019d8492121901d3845a37 Reviewed-on: https://pdfium-review.googlesource.com/23490 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-23Remove CXFA_WidgetAcc from CXFA_FFField::CalculateNodeDan Sinclair
This CL changes CXFA_FFField::CalculateNode to use a CXFA_Node instead of a CXFA_WidgetAcc. Change-Id: I305e0d48f321df845ca2c1ff0f446d201ae7b3fb Reviewed-on: https://pdfium-review.googlesource.com/23471 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-23Tidy fxjs/cfxjse_isolatetracker.hTom Sepez
Move constructors to .cpp file. Remove unused member and its accessor method. Remove unused system includes. IsolateHandleRootContext is-a IsolateHandle (not has-a). Change-Id: Ifcba44f3ea7ad963fee731c24b2e79c5a8124539 Reviewed-on: https://pdfium-review.googlesource.com/23171 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-01-22Cleanup WidgetAcc forward declareschromium/3329Dan Sinclair
Remove CXFA_WidgetAcc forward declarations from files which don't need them. Change-Id: I5014872f78e764024590852b920901a49966eff6 Reviewed-on: https://pdfium-review.googlesource.com/23470 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-22Convert CXFA_EventParam to store a CXFA_NodeDan Sinclair
This CL changes the CXFA_EventParam code to store a CXFA_Node instead of a CXFA_WidgetAcc. Change-Id: I21510674b0b6435ca9b87bfbf97914f54e5e3464 Reviewed-on: https://pdfium-review.googlesource.com/23451 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-01-22Convert CXFA_FFWidgetHandler to use CXFA_NodeDan Sinclair
This CL removes CXFA_WidgetAcc from CXFA_FFWidgetHandler and uses CXFA_Node directly. Change-Id: I88cf1edc53f4489aeac018a95e9d5936d85106db Reviewed-on: https://pdfium-review.googlesource.com/23450 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-01-22Remove GetLocale from CXFA_WidgetAccDan Sinclair
This CL removes the GetLocale method from CXFA_WidgetAcc and calls the CXFA_Node method directly. The node is always provided to CXFA_WidgetAcc so an asset is added and subsequent checks removed. Change-Id: I7495cd3a9678762e9e6fdecdf13104604d190280 Reviewed-on: https://pdfium-review.googlesource.com/23430 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-01-22Remove CXFA_WidgetAcc from CXFA_FFNotifyDan Sinclair
This CL updates CXFA_FFNotify to use CXFA_Node instead of CXFA_WidgetAcc in its methods. Change-Id: I5036767f439ba0794a7b2b9df1898aad8390f987 Reviewed-on: https://pdfium-review.googlesource.com/23411 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-22Remove unused WidgetPreRemove and WidgetPostAdd paramsDan Sinclair
This CL removes the unused WidgetAcc param from both methods and updates callsites as needed. The include for cxfa_widgetacc.h was removed from fxfa.h and had to be inserted in locations where needed. Change-Id: I55ae9e935a948dff3b6d906b4567665e60530eba Reviewed-on: https://pdfium-review.googlesource.com/23391 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-22Convert CXFA_TextProvider to use a CXFA_NodeDan Sinclair
This CL changes CXFA_TextProvider to accept a CXFA_Node instead of a CXFA_WidgetAcc. The internal uses were updated as needed. Change-Id: Iaa9e4024371a3ae9521caf1444b298fb3710f829 Reviewed-on: https://pdfium-review.googlesource.com/23390 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-22Change GetContainerWidgetAcc to GetContainerNodeDan Sinclair
This Cl converts the code which retrieved the containers WidgetAcc to retrieve the container itself and then get the WidgetAcc from the container. Change-Id: Ib279a150500d1204e3d18f11f6a638c1f6c368ec Reviewed-on: https://pdfium-review.googlesource.com/23350 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-22Move WidgetAcc and IsWidgetReady to CXFA_NodeDan Sinclair
This CL moves the widget_acc storage and the is_widget_ready flag from CXFA_Object to CXFA_Node. Change-Id: I96aeb38a854f227985a5549dc67f1b84d924abb8 Reviewed-on: https://pdfium-review.googlesource.com/23330 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-01-22Support jumbo build in XFA targets.Lei Zhang
Except for the XFA parser, which has too many classes with the same constant names. BUG=pdfium:964 Change-Id: Iab1ac146017d13f63c0f4756d6e06035543eaba8 Reviewed-on: https://pdfium-review.googlesource.com/23174 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-22Break xfa target into smaller pieces.Lei Zhang
Change-Id: I3a30b3e945dd3147a85f0e057abd8768c9089331 Reviewed-on: https://pdfium-review.googlesource.com/23173 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-22Move IsNull and PreNull to CXFA_NodeDan Sinclair
This CL moves the m_bIsNull and m_bPreNull flags from CXFA_WidgetAcc to CXFA_Node. Change-Id: Ibdcdb8611699d6d908ab3c6ed05cbce7bba872ae Reviewed-on: https://pdfium-review.googlesource.com/23310 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-22Move the UI elements from CXFA_WidgetAcc to CXFA_NodeDan Sinclair
This CL moves the methods and members related to the UI nodes from the CXFA_WidgetAcc class to the CXFA_Node class. Change-Id: I1fdc5173787141065f1e607bbfefa3b22af738b4 Reviewed-on: https://pdfium-review.googlesource.com/23290 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-22Add flag to notify if a node widget is readyDan Sinclair
This CL updates CXFA_Object to have a flag which annotates if the node is ready. Ready means that we've gone through the OnNodeReady call in CXFA_FFNotify. Previously we'd check if the WidgetAcc exists on the node which is created in OnNodeReady. This CL replaces all the points where we check for a WidgetAcc existing with a IsWidgetReady() call. Change-Id: I54e8160269c3104cdae7a516c1814c13bee15130 Reviewed-on: https://pdfium-review.googlesource.com/23190 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-22Use MaybeLocal versions of v8::Script APIsAdam Klein
The non-Maybe versions will soon be deprecated. Where the code was already handling failures, I did the same; where the code was not handling failures, I inserted ToLocalChecked() calls. Thus the behavior before and after this patch should be the same. For consistency, also updated the use of v8::Function::Call in CFXJSE_Context::ExecuteScript() to the Maybe version, so that all code in that function now branches on the non-emptyness of MaybeLocals, rather than TryCatch::HasCaught(). ASSERTs were inserted to sanity-check the API usage. Bug: v8:7269, v8:7273, v8:7274 Change-Id: I59696e63a64a233a9f9c2b72c621a05b5e349a31 Reviewed-on: https://pdfium-review.googlesource.com/23270 Commit-Queue: Jochen Eisinger <jochen@chromium.org> Reviewed-by: Jochen Eisinger <jochen@chromium.org>
2018-01-22Tests for composing CFX_Matrix transforms.Henrique Nakashima
Bug: pdfium:987 Change-Id: Ieee2850ceec12d6fff3ba6e0fb5a775e62c5c76e Reviewed-on: https://pdfium-review.googlesource.com/23230 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
2018-01-19Remove code added in by a bad rebase or mergechromium/3328chromium/3327chromium/3326Ryan Harrison
The guard being removed was moved lower down in the code, but it appears the original creeped back in while I was rebasing at some point. This is causing clusterfuzz failures. BUG=chromium:803732,chromium:803735 Change-Id: I5bcc6046e64d6060a674f390e243dd8eda9d1d17 Reviewed-on: https://pdfium-review.googlesource.com/23250 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-01-19Fix CFX_Matrix.RotateAt()Henrique Nakashima
The translations were in the opposite order they should be. First the specified (x, y) coord needs to be translated to the origin, then rotation should be applied, then the translation should be reversed. To translate (x, y) to the origin, the initial translation should be Tx = -x, Ty = -y. Bug: pdfium:987 Change-Id: I7f873c6a20858bf7fd03e5fdb49020b196b44a1d Reviewed-on: https://pdfium-review.googlesource.com/23210 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Reviewed-by: Shirleen Lou <xlou@chromium.org>
2018-01-19Remove NeedAlpha() in CFX_ImageTransformer.Lei Zhang
WriteColorResult(), which calls NeedAlpha(), runs on a per-pixel basis in CFX_ImageTransformer. NeedAlpha() repeats some conditional calculations. Remove that for a slight speed-up. Change-Id: I0bb3f92001b9ccdb65c4d59c9f832fe9edfa71f4 Reviewed-on: https://pdfium-review.googlesource.com/23175 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-18Add jumbo build support for fxge and pwl.Lei Zhang
This completes jumbo build support for non-XFA builds. BUG=pdfium:964 Change-Id: Ife4ed23f9b438623581a863685014e64a06cf0d8 Reviewed-on: https://pdfium-review.googlesource.com/22775 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-18Move XFA_IsCreateWidget to CXFA_ObjectDan Sinclair
This CL removes the free XFA_IsCreateWidget method and moves the functionality into CXFA_Object::HasCreatedUIWidget to clarify the purpose. Change-Id: Icca1f49238040b5d87fbb4eb33340f9309f5e2f3 Reviewed-on: https://pdfium-review.googlesource.com/23133 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-01-18Avoid integer overflows in CJBig2_Image::composeTo_opt2().Lei Zhang
BUG=chromium:802983 Change-Id: I866ece9c370bf05571b76b50ad23598f5038332b Reviewed-on: https://pdfium-review.googlesource.com/23151 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-18Declare variables closer to use in CJBig2_Image::composeTo_opt2().Lei Zhang
Change-Id: Ifabaf71bb45ffa7e9af7da4acb21d8757e9596ce Reviewed-on: https://pdfium-review.googlesource.com/23150 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-01-18Remove more unneeded includes and code from headers.Lei Zhang
Change-Id: I0a07dbc9850bef2184ed35ff04b08385fc1bdd17 Reviewed-on: https://pdfium-review.googlesource.com/22891 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-18Move format specific elements out of ContinueDecodeRyan Harrison
Refactoring the big image format switch in ContinueDecode to call separate methods for each image format, instead of having one giant switch block. This should have no functional changes. BUG=pdfium:976 Change-Id: Ide4892526ee823023c233f0e43b1c98ac8bd1477 Reviewed-on: https://pdfium-review.googlesource.com/23134 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-01-17Move format specific elements out of StartDecodechromium/3324Ryan Harrison
Refactoring the big image format switch in StartDecode to call separate methods for each image format, instead of having one giant switch block. This should have no functional changes. BUG=pdfium:976 Change-Id: I4e609ecaec0c5d0e173957c0795555b37c38f9a2 Reviewed-on: https://pdfium-review.googlesource.com/23131 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-17Move format specific elements out of DetectImageTypeRyan Harrison
Refactoring the big image format switch in DetectImageType to call separate methods for each image format, instead of having one giant switch block. This should have no functional changes. BUG=pdfium:976 Change-Id: I52cc83879da20b33d471420016f6b1eb53993f0b Reviewed-on: https://pdfium-review.googlesource.com/23130 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-17Remove redundant GetNodeDan Sinclair
The WidgetAcc of a node will return the node from GetNode. So, calling GetNode()->GetWidgetAcc()->GetNode() will return the same thing as GetNode(). Change-Id: I82bffb191fd539a6f9b1e4a72e8ffcba1bdc1cc9 Reviewed-on: https://pdfium-review.googlesource.com/23132 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-17Remove param checking from StartScanLineRyan Harrison
By catching this early we are now actually returning the wrong value. The bad value should be passed into the jpeg library code, which will cause a fatal error and jump out to the common error handling code for this method. BUG=pdfium:986 Change-Id: Ib3d32939aa38aece887c014c3a477407ee178193 Reviewed-on: https://pdfium-review.googlesource.com/23119 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-17Move remaining jpeg error handling up a levelRyan Harrison
This moves the setjmps needed for handling fatal errors in the jpeg library up a level to be in line with how other instances of this are being modified. This additionally reduces the number of times that setjmp needs to be called and documents why it is occurring. This covers the Start and ReadScanLine methods. It also adds in setting the error member, which had been missed in previous CLs. BUG=pdfium:986 Change-Id: I7db87288ffe0ee8b29899d97035c30ad812da76a Reviewed-on: https://pdfium-review.googlesource.com/23117 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-01-17Move jpeg header read error handling up a levelRyan Harrison
This move the setjmp needed for handling fatal errors in the jpeg library up a level to be in line with how other instances of this are being modified. This additionally reduces the number of times that setjmp needs to be called and documents why it is occuring. BUG=pdfium:986 Change-Id: Ia57821e1ce65aae811618effb3f2fa6256e1ab8c Reviewed-on: https://pdfium-review.googlesource.com/23115 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-01-17Pass Isolate to v8::String::Utf8Value APIAdam Klein
The non-Isolate version will soon be deprecated. Bug: v8:7269, v8:7282 Change-Id: I204e45bd73f5b809d6c44b77bbcf62d32e7ccbec Reviewed-on: https://pdfium-review.googlesource.com/23058 Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Jochen Eisinger <jochen@chromium.org> Commit-Queue: Jochen Eisinger <jochen@chromium.org>
2018-01-17Do more forward declarations in cxfa_node.h.Lei Zhang
Including cjx_node.h pulls in v8 headers for many XFA files. Change-Id: I80a32d0a56b8de5787db5275db48c568da6d0144 Reviewed-on: https://pdfium-review.googlesource.com/22890 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-01-17Fix behavior of FPDF_RenderPageBitmapWithMatrixHenrique Nakashima
This functional part of this CL is mostly a revert of "Change behaviour of FPDF_RenderPageBitmapWithMatrix" 24b0733a72bbc4013bff8628f198b0aea807aa06 Besides the revert, the parameters passed to pPage->GetDisplayMatrix() are changed to fix a bug with the previous implementation: the page was scaled to fit inside the clipping_rect, instead of clipped. Bug: pdfium:849 Change-Id: I95d0a303a979c998026a3bd6963c8684a1209f03 Reviewed-on: https://pdfium-review.googlesource.com/22931 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-01-17Move code related to stroke line dash to CXFA_StrokeDan Sinclair
This CL moves XFA_StrokeTypeSetLineDash into the CXFA_Stroke class and cleans up the unused CXFA_Graphics code for setting line dash values. Change-Id: If6db6c315571dbcea630bc32e0d05dae6c0f10be Reviewed-on: https://pdfium-review.googlesource.com/23114 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-17Cleanup some CXFA_Box methodsDan Sinclair
Shuffle some code around, make things a little cleaner. Change-Id: I4cbdf4fc7e7d0a372cdc5cb63b45ca196a037543 Reviewed-on: https://pdfium-review.googlesource.com/23113 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-17Rename box arc methods for clarityDan Sinclair
This CL renames the CXFA_Box arc methods to make it clear they aren't just for handling arcs. Change-Id: Id2fa16c572f9529d6a13a921d59c2dcbf8a50b7a Reviewed-on: https://pdfium-review.googlesource.com/23112 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-17Move GetFillpath to CXFA_RectangleDan Sinclair
This CL moves the code related to getting the fill path for rectangles to the CXFA_Rectangle class. Change-Id: I83c43c259d2decadaeb99d1f081f3972ddf8294e Reviewed-on: https://pdfium-review.googlesource.com/23111 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-17Move rectangle drawing code to CXFA_RectangleDan Sinclair
This CL moves code related to drawing rectangles to the CXFA_Rectangle class. This also turns CXFA_Border into a CXFA_Rectangle to share the drawing code. Change-Id: I91e2e73b33ecbcda477cf953cf7609310a01fcd4 Reviewed-on: https://pdfium-review.googlesource.com/23110 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-01-17Correctly handle errors when starting jpeg codecRyan Harrison
The current implementation treats both returning false and longjmp'ing out of jpeg_start_decompress as indicating that the decompression has paused and needs more data. This is incorrect, in reality only the false return value indicates this. The longjmp path indicates a fatal error in the processing of the jpeg. The default implementation actually calls exit() in this case, and the documentation explicitly calls out that in this case recovery isn't possible and the decode process will have to start from scratch. This resolves a situation where the progressive decoder would get a malformed jpeg and keep on grabbing blocks from it and try to start decoding it. This would eventually fail when it ran out of data to read, but would cause a large memory leak and a crash on the MSAN fuzzers. BUG=pdfium:986,chromium:798665 Change-Id: Ifd2ed7a2dc46fa20bab34e9c461a8d4c4718c4d7 Reviewed-on: https://pdfium-review.googlesource.com/23072 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
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