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authordsinclair <dsinclair@chromium.org>2016-08-23 11:39:23 -0700
committerCommit bot <commit-bot@chromium.org>2016-08-23 11:39:23 -0700
commit837735660808d52580703183ae24a3c7c7b05c7d (patch)
treec0a607bfd0491fbf18988bf4dbe9f034571bfdf7 /xfa/fgas/font
parentc38de1116bbee807e4461fe8a08e4c152c0fce15 (diff)
downloadpdfium-837735660808d52580703183ae24a3c7c7b05c7d.tar.xz
[XFA] Force destruction order of font managers.chromium/2838
The GEFont points to the font manager which creates it and tries to unregister itself. Currently the GEFont can be created by the default mapper and then stored in a different mapper. If the default mapper is destroyed first, when the second mapper cleans up the font there will be a call to unregister on the default mapper causing a use-after-free. The long term fix is to fixup the GEFont so it points to the correct mapper to unregister from. This CL forces the destruction order in CXFA_FFApp to cleanup the non-default mapper first. BUG=chromium:637546 Review-Url: https://codereview.chromium.org/2259823004
Diffstat (limited to 'xfa/fgas/font')
-rw-r--r--xfa/fgas/font/fgas_stdfontmgr.cpp5
-rw-r--r--xfa/fgas/font/fgas_stdfontmgr.h3
2 files changed, 3 insertions, 5 deletions
diff --git a/xfa/fgas/font/fgas_stdfontmgr.cpp b/xfa/fgas/font/fgas_stdfontmgr.cpp
index ab7852e310..7e5cfbb796 100644
--- a/xfa/fgas/font/fgas_stdfontmgr.cpp
+++ b/xfa/fgas/font/fgas_stdfontmgr.cpp
@@ -1156,7 +1156,6 @@ void CFGAS_FontMgrImp::RemoveFont(CFGAS_GEFont* pEFont) {
}
void CFGAS_FontMgrImp::RegisterFace(FXFT_Face pFace,
- CFX_FontDescriptors& Fonts,
const CFX_WideString* pFaceName) {
if ((pFace->face_flags & FT_FACE_FLAG_SCALABLE) == 0)
return;
@@ -1188,7 +1187,7 @@ void CFGAS_FontMgrImp::RegisterFace(FXFT_Face pFace,
: CFX_WideString::FromLocal(FXFT_Get_Postscript_Name(pFace));
pFont->m_nFaceIndex = pFace->face_index;
- Fonts.Add(pFont.release());
+ m_InstalledFonts.Add(pFont.release());
}
void CFGAS_FontMgrImp::RegisterFaces(IFX_FileRead* pFontStream,
@@ -1202,7 +1201,7 @@ void CFGAS_FontMgrImp::RegisterFaces(IFX_FileRead* pFontStream,
// All faces keep number of faces. It can be retrieved from any one face.
if (num_faces == 0)
num_faces = pFace->num_faces;
- RegisterFace(pFace, m_InstalledFonts, pFaceName);
+ RegisterFace(pFace, pFaceName);
if (FXFT_Get_Face_External_Stream(pFace))
FXFT_Clear_Face_External_Stream(pFace);
FXFT_Done_Face(pFace);
diff --git a/xfa/fgas/font/fgas_stdfontmgr.h b/xfa/fgas/font/fgas_stdfontmgr.h
index 65f260c54c..0506876b64 100644
--- a/xfa/fgas/font/fgas_stdfontmgr.h
+++ b/xfa/fgas/font/fgas_stdfontmgr.h
@@ -184,7 +184,6 @@ class CFGAS_FontMgrImp : public IFGAS_FontMgr {
protected:
void RegisterFace(FXFT_Face pFace,
- CFX_FontDescriptors& Fonts,
const CFX_WideString* pFaceName);
void RegisterFaces(IFX_FileRead* pFontStream,
const CFX_WideString* pFaceName);
@@ -192,7 +191,6 @@ class CFGAS_FontMgrImp : public IFGAS_FontMgr {
std::vector<uint16_t> GetCharsets(FXFT_Face pFace) const;
void GetUSBCSB(FXFT_Face pFace, uint32_t* USB, uint32_t* CSB);
uint32_t GetFlags(FXFT_Face pFace);
- CFX_FontDescriptors m_InstalledFonts;
FX_BOOL VerifyUnicode(CFX_FontDescriptor* pDesc, FX_WCHAR wcUnicode);
FX_BOOL VerifyUnicode(CFGAS_GEFont* pFont, FX_WCHAR wcUnicode);
int32_t IsPartName(const CFX_WideString& Name1, const CFX_WideString& Name2);
@@ -212,6 +210,7 @@ class CFGAS_FontMgrImp : public IFGAS_FontMgr {
uint32_t index);
IFX_FileRead* CreateFontStream(const CFX_ByteString& bsFaceName);
+ CFX_FontDescriptors m_InstalledFonts;
CFX_MapPtrTemplate<uint32_t, CFX_FontDescriptorInfos*> m_Hash2CandidateList;
CFX_MapPtrTemplate<uint32_t, CFX_ArrayTemplate<CFGAS_GEFont*>*> m_Hash2Fonts;
CFX_MapPtrTemplate<CFGAS_GEFont*, IFX_FileRead*> m_IFXFont2FileRead;