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https://issues.apache.org/jira/browse/AXIS2C-939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dave Meier updated AXIS2C-939:
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Attachment: axis2_isapi_plugin_c_diff.txt
axis2_isapi_plugin.c diff.
> IIS Module does not set dll path and LoadLibrary call does not specify
> libraries current dir as start of search path
> --------------------------------------------------------------------------------------------------------------------
>
> Key: AXIS2C-939
> URL: https://issues.apache.org/jira/browse/AXIS2C-939
> Project: Axis2-C
> Issue Type: Bug
> Components: transport/http
> Affects Versions: Current (Nightly)
> Environment: Windows XP, IIS 5.1
> Reporter: Dave Meier
> Priority: Blocker
> Attachments: axis2_isapi_plugin_c_diff.txt, axutils_windows_c_diff.txt
>
>
> I have a services dll that depends on other dlls. When I use
> axis2_http_server.exe it works fine, but under the IIS module, my service dll
> fails to load with a "Failed in creating DLL" message.
> I modified the code and was able to get it to work and can provide a diff
> once I learn how to do that. The change involved setting the dll path in the
> IIS module code and modifying the LoadLibrary call that Axis2C uses to load
> the service dll. The second change involves telling LoadLibrary to search
> the same directory where the dll is located first when looking for other dlls
> that the service dll depends upon. This change avoids a problem where an
> incorrect dll is picked up from somewhere else in the search path (aka "dll
> hell").
> ------------------------------------------------------------------------------------------------------------------------------
> Change 1 - file "axis2_isapi_plugin.c", method
> "HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB)"
> ------------------------------------------------------------------------------------------------------------------------------
> DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB)
> {
> DWORD rc = HSE_STATUS_ERROR;
> lpECB->dwHttpStatusCode = HTTP_INTERNAL_SERVER_ERROR;
> if (axis2_worker)
> {
> // windows cannot find the correct dlls unless the dir is set
> // but we want to reset to previous dir after the load
> char szOriginalPath[_MAX_PATH + 1];
> char szPath[_MAX_PATH + 1];
> DWORD dwBufferSize = 0;
> ZeroMemory(szOriginalPath, sizeof szOriginalPath);
> dwBufferSize = sizeof szOriginalPath;
> #if _WIN32_WINNT >= 0x0502 // we stop supporting old WIN OSs
> GetDllDirectory( dwBufferSize, szOriginalPath );
> #else
> GetCurrentDirectory( dwBufferSize, szOriginalPath );
> #endif // _WIN32_WINNT >= 0x050
> ZeroMemory(szPath, sizeof szPath);
> dwBufferSize = sizeof szPath;
> lpECB->GetServerVariable(lpECB->ConnID, "APPL_PHYSICAL_PATH", szPath,
> &dwBufferSize);
> if ( strlen( szPath ) > 0 )
> {
> // windows cannot find the correct dlls unless the path is set
> #if _WIN32_WINNT >= 0x0502 // we stop supporting old WIN OSs
> SetDllDirectory( szPath );
> #else
> SetCurrentDirectory( szPath );
> #endif // _WIN32_WINNT >= 0x050
> }
> AXIS2_IIS_WORKER_PROCESS_REQUEST(axis2_worker, axutil_env, lpECB);
> // windows cannot find the correct dlls unless the dir is set
> // but we want to reset to previous dir after the load
> #if _WIN32_WINNT >= 0x0502 // we stop supporting old WIN OSs
> SetDllDirectory( szOriginalPath );
> #else
> SetCurrentDirectory( szOriginalPath );
> #endif // _WIN32_WINNT >= 0x050
> }
> else
> return HSE_STATUS_ERROR;
> return HSE_STATUS_SUCCESS;
> }
> ------------------------------------------------------------------------------------------------------------------------------
> Change 2 - file "axutil_windows.c", method "callLoadLib(char *lib)":
> ------------------------------------------------------------------------------------------------------------------------------
> return LoadLibraryEx(lib, NULL, LOAD_WITH_ALTERED_SEARCH_PATH); // was
> "return LoadLibrary(lib);"
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