On 28 August 2016 at 19:58, Michael Niedermayer <mich...@niedermayer.cc> wrote:
> On Sun, Aug 28, 2016 at 06:50:58PM +1000, Matt Oliver wrote: > > The dlopen function is modified to prevent loading dll's from the current > > directory for improved program security for library users. This extends > > similar functionality from the recently applied SetDllDirectory patch > > except that it adds additional security for library users as well (as > > opposed to just program users). > > > os_support.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 49 insertions(+) > > 89c775ecc8ac03d001131dd50e043ba57ffe5420 0001-lavf-os_support-Add-safe- > win32-dlopen-dlclose-dlsym-.patch > > From 666ab2f7d64cfa94984881aca830355555993365 Mon Sep 17 00:00:00 2001 > > From: Matt Oliver <protogo...@gmail.com> > > Date: Sun, 21 Aug 2016 16:06:59 +1000 > > Subject: [PATCH 1/2] lavf/os_support: Add safe win32 dlopen/dlclose/dlsym > > functions. > > breaks mingw32 > > In file included from src/libavformat/internal.h:28:0, > from src/libavdevice/lavfi.c:44: > src/libavformat/os_support.h: In function ‘win32_dlopen’: > src/libavformat/os_support.h:303:46: error: > ‘LOAD_LIBRARY_SEARCH_APPLICATION_DIR’ > undeclared (first use in this function) > src/libavformat/os_support.h:303:46: note: each undeclared identifier is > reported only once for each function it appears in > src/libavformat/os_support.h:303:84: error: > ‘LOAD_LIBRARY_SEARCH_SYSTEM32’ undeclared (first use in this function) > In file included from src/libavformat/internal.h:28:0, > from src/libavdevice/gdigrab.c:32: > src/libavformat/os_support.h: In function ‘win32_dlopen’: > src/libavformat/os_support.h:303:46: error: > ‘LOAD_LIBRARY_SEARCH_APPLICATION_DIR’ > undeclared (first use in this function) > src/libavformat/os_support.h:303:46: note: each undeclared identifier is > reported only once for each function it appears in > src/libavformat/os_support.h:303:84: error: > ‘LOAD_LIBRARY_SEARCH_SYSTEM32’ undeclared (first use in this function) > make: *** [libavdevice/lavfi.o] Error 1 > It appears older versions of mingw must not have the appropriate defines (as the version i tested against worked fine). Anyway updated patch attached which corrects the issue.
0001-lavf-os_support-Add-safe-win32-dlopen-dlclose-dlsym-.patch
Description: Binary data
0002-Modify-existing-dll-loading-to-use-new-safe-dlopen.patch
Description: Binary data
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