move TestImportOLE2 where it can be used by fftester

Change-Id: I7b41d9ec673cfb96f51b5008540df63fe78a7581
Reviewed-on: https://gerrit.libreoffice.org/42639Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sot/source/sdstor/stg.cxx

@@ -941,5 +941,4 @@ bool Storage::Equals( const BaseStorage& rStorage ) const
     return pOther && ( pOther->pEntry == pEntry );
 }
 
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sot/source/sdstor/storage.cxx

@@ -809,4 +809,52 @@ sal_Int32 SotStorage::GetVersion( const css::uno::Reference < css::embed::XStora
     return 0;
 }
 
+namespace
+{
+    void traverse(const tools::SvRef<SotStorage>& rStorage, std::vector<unsigned char>& rBuf)
+    {
+        SvStorageInfoList infos;
+
+        rStorage->FillInfoList(&infos);
+
+        for (const auto& info: infos)
+        {
+            if (info.IsStream())
+            {
+                // try to open and read all content
+                tools::SvRef<SotStorageStream> xStream(rStorage->OpenSotStream(info.GetName(), StreamMode::STD_READ));
+                const size_t nSize = xStream->GetSize();
+                const size_t nRead = xStream->ReadBytes(rBuf.data(), nSize);
+                SAL_INFO("sot", "Read " << nRead << "bytes");
+            }
+            else if (info.IsStorage())
+            {
+                tools::SvRef<SotStorage> xStorage(rStorage->OpenSotStorage(info.GetName(), StreamMode::STD_READ));
+
+                // continue with children
+                traverse(xStorage, rBuf);
+            }
+            else
+            {
+            }
+        }
+    }
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT bool SAL_CALL TestImportOLE2(SvStream &rStream)
+{
+    try
+    {
+        size_t nSize = rStream.remainingSize();
+        tools::SvRef<SotStorage> xRootStorage(new SotStorage(&rStream, false));
+        std::vector<unsigned char> aTmpBuf(nSize);
+        traverse(xRootStorage, aTmpBuf);
+    }
+    catch (...)
+    {
+        return false;
+    }
+    return true;
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

vcl/workben/fftester.cxx

@@ -532,7 +532,20 @@ try_again:
                 SvFileStream aFileStream(out, StreamMode::READ);
                 ret = (int) (*pfnImport)(aFileStream);
             }
-
+            else if (strcmp(argv[2], "ole") == 0)
+            {
+                static FFilterCall pfnImport(nullptr);
+                if (!pfnImport)
+                {
+                    osl::Module aLibrary;
+                    aLibrary.loadRelative(&thisModule, "libsotlo.so", SAL_LOADMODULE_LAZY);
+                    pfnImport = reinterpret_cast<FFilterCall>(
+                        aLibrary.getFunctionSymbol("TestImportOLE2"));
+                    aLibrary.release();
+                }
+                SvFileStream aFileStream(out, StreamMode::READ);
+                ret = (int) (*pfnImport)(aFileStream);
+            }
 #endif
         }
 

vcl/workben/olefuzzer.cxx

@@ -7,60 +7,10 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-#include <vector>
-
-#include <sot/storage.hxx>
-
 #include <tools/stream.hxx>
-
 #include "commonfuzzer.hxx"
 
-namespace
-{
-
-void traverse(const tools::SvRef<SotStorage>& rStorage, std::vector<unsigned char>& rBuf)
-{
-    SvStorageInfoList infos;
-
-    rStorage->FillInfoList(&infos);
-
-    for (const auto& info: infos)
-    {
-        if (info.IsStream())
-        {
-            // try to open and read all content
-            tools::SvRef<SotStorageStream> xStream(rStorage->OpenSotStream(info.GetName(), StreamMode::STD_READ));
-            const size_t nSize = xStream->GetSize();
-            const size_t nRead = xStream->ReadBytes(rBuf.data(), nSize);
-            (void) nRead;
-        }
-        else if (info.IsStorage())
-        {
-            tools::SvRef<SotStorage> xStorage(rStorage->OpenSotStorage(info.GetName(), StreamMode::STD_READ));
-
-            // continue with children
-            traverse(xStorage, rBuf);
-        }
-        else
-        {
-        }
-    }
-}
-
-void TestImportOLE2(SvStream &rStream, size_t nSize)
-{
-    try
-    {
-        tools::SvRef<SotStorage> xRootStorage(new SotStorage(&rStream, false));
-        std::vector<unsigned char> aTmpBuf(nSize);
-        traverse(xRootStorage, aTmpBuf);
-    }
-    catch (...)
-    {
-    }
-}
-
-}
+extern "C" bool TestImportOLE2(SvStream &rStream);
 
 extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv)
 {
@@ -71,7 +21,7 @@ extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv)
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
 {
     SvMemoryStream aStream(const_cast<uint8_t*>(data), size, StreamMode::READ);
-    TestImportOLE2(aStream, size);
+    TestImportOLE2(aStream);
     return 0;
 }