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| author | nsylvain@chromium.org <nsylvain@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2008-11-18 01:47:05 +0000 |
|---|---|---|
| committer | nsylvain@chromium.org <nsylvain@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2008-11-18 01:47:05 +0000 |
| commit | ebc4e18bbeb1fc4a4777ca2ac416ba9295df105c (patch) | |
| tree | 798d70afeceeabcfcbe1b8fea7d8cbefcf4db795 /sandbox/src/interception.cc | |
| parent | aa0f26699ba66418e3d8fd06ba086142d7012377 (diff) | |
| download | chromium_src-ebc4e18bbeb1fc4a4777ca2ac416ba9295df105c.zip chromium_src-ebc4e18bbeb1fc4a4777ca2ac416ba9295df105c.tar.gz chromium_src-ebc4e18bbeb1fc4a4777ca2ac416ba9295df105c.tar.bz2 | |
Application Verifier hooks GetProcAddress and returns
pointer to functions in its own dll instead. When we
try to patch these functions, we fail because the
appverif dll is not loaded yet.
We need to get the real pointers to the NT functions.
Review URL: http://codereview.chromium.org/11412
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@5591 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'sandbox/src/interception.cc')
| -rw-r--r-- | sandbox/src/interception.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sandbox/src/interception.cc b/sandbox/src/interception.cc index 8ee56f4..621a27d 100644 --- a/sandbox/src/interception.cc +++ b/sandbox/src/interception.cc @@ -12,6 +12,7 @@ #include "base/logging.h" #include "base/scoped_ptr.h" #include "sandbox/src/interception_internal.h" +#include "sandbox/src/pe_image.h" #include "sandbox/src/sandbox.h" #include "sandbox/src/sandbox_utils.h" #include "sandbox/src/service_resolver.h" @@ -400,9 +401,11 @@ bool InterceptionManager::PatchClientFunctions(DllInterceptionData* thunks, if (!ntdll_base) return false; + PEImage ntdll_image(ntdll_base); + // Bypass purify's interception. wchar_t* loader_get = reinterpret_cast<wchar_t*>( - ::GetProcAddress(ntdll_base, "LdrGetDllHandle")); + ntdll_image.GetProcAddress("LdrGetDllHandle")); if (loader_get) { if (!GetModuleHandleHelper(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, |