1 files changed, 278 insertions, 0 deletions
diff --git a/pyuno/source/loader/pyuno_loader.cxx b/pyuno/source/loader/pyuno_loader.cxx
new file mode 100644
index 000000000..da0467f45
--- /dev/null
+++ b/pyuno/source/loader/pyuno_loader.cxx
@@ -0,0 +1,278 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <config_features.h>
+#include <config_folders.h>
+
+#include <pyuno.hxx>
+
+#include <o3tl/any.hxx>
+#include <o3tl/char16_t2wchar_t.hxx>
+
+#include <osl/process.h>
+#include <osl/file.hxx>
+#include <osl/thread.h>
+
+#include <rtl/ustrbuf.hxx>
+#include <rtl/bootstrap.hxx>
+
+#include <cppuhelper/factory.hxx>
+
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+// apparently PATH_MAX is not standard and not defined by MSVC
+#ifndef PATH_MAX
+#ifdef _MAX_PATH
+#define PATH_MAX _MAX_PATH
+#else
+#ifdef MAX_PATH
+#define PATH_MAX MAX_PATH
+#else
+#error no PATH_MAX
+#endif
+#endif
+#endif
+
+using pyuno::PyRef;
+using pyuno::NOT_NULL;
+using pyuno::Runtime;
+using pyuno::PyThreadAttach;
+
+using com::sun::star::uno::Reference;
+using com::sun::star::uno::XInterface;
+using com::sun::star::uno::Sequence;
+using com::sun::star::uno::XComponentContext;
+using com::sun::star::uno::RuntimeException;
+
+namespace pyuno_loader
+{
+
+/// @throws RuntimeException
+static void raiseRuntimeExceptionWhenNeeded()
+{
+    if( PyErr_Occurred() )
+    {
+        PyRef excType, excValue, excTraceback;
+        PyErr_Fetch(reinterpret_cast<PyObject **>(&excType), reinterpret_cast<PyObject**>(&excValue), reinterpret_cast<PyObject**>(&excTraceback));
+        Runtime runtime;
+        css::uno::Any a = runtime.extractUnoException( excType, excValue, excTraceback );
+        OUStringBuffer buf;
+        buf.append( "python-loader:" );
+        if( auto e = o3tl::tryAccess<css::uno::Exception>(a) )
+            buf.append( e->Message );
+        throw RuntimeException( buf.makeStringAndClear() );
+    }
+}
+
+/// @throws RuntimeException
+static PyRef getLoaderModule()
+{
+    PyRef module(
+        PyImport_ImportModule( "pythonloader" ),
+        SAL_NO_ACQUIRE );
+    raiseRuntimeExceptionWhenNeeded();
+    if( !module.is() )
+    {
+        throw RuntimeException( "pythonloader: Couldn't load pythonloader module" );
+    }
+    return PyRef( PyModule_GetDict( module.get() ));
+}
+
+/// @throws RuntimeException
+static PyRef getObjectFromLoaderModule( const char * func )
+{
+    PyRef object( PyDict_GetItemString(getLoaderModule().get(), func ) );
+    if( !object.is() )
+    {
+        throw RuntimeException( "pythonloader: couldn't find core element pythonloader." +
+                OUString::createFromAscii( func ));
+    }
+    return object;
+}
+
+static void setPythonHome ( const OUString & pythonHome )
+{
+    OUString systemPythonHome;
+    osl_getSystemPathFromFileURL( pythonHome.pData, &(systemPythonHome.pData) );
+    // static because Py_SetPythonHome just copies the "wide" pointer
+    static wchar_t wide[PATH_MAX + 1];
+#if defined _WIN32
+    const size_t len = systemPythonHome.getLength();
+    if (len < std::size(wide))
+        wcsncpy(wide, o3tl::toW(systemPythonHome.getStr()), len + 1);
+#else
+    OString o = OUStringToOString(systemPythonHome, osl_getThreadTextEncoding());
+    size_t len = mbstowcs(wide, o.pData->buffer, PATH_MAX + 1);
+    if(len == size_t(-1))
+    {
+        PyErr_SetString(PyExc_SystemError, "invalid multibyte sequence in python home path");
+        return;
+    }
+#endif
+    if(len >= PATH_MAX + 1)
+    {
+        PyErr_SetString(PyExc_SystemError, "python home path is too long");
+        return;
+    }
+    Py_SetPythonHome(wide);
+}
+
+static void prependPythonPath( std::u16string_view pythonPathBootstrap )
+{
+    OUStringBuffer bufPYTHONPATH( 256 );
+    bool bAppendSep = false;
+    sal_Int32 nIndex = 0;
+    while( true )
+    {
+        size_t nNew = pythonPathBootstrap.find( ' ', nIndex );
+        std::u16string_view fileUrl;
+        if( nNew == std::u16string_view::npos )
+        {
+            fileUrl = pythonPathBootstrap.substr(nIndex);
+        }
+        else
+        {
+            fileUrl = pythonPathBootstrap.substr(nIndex, nNew - nIndex);
+        }
+        OUString systemPath;
+        osl_getSystemPathFromFileURL( OUString(fileUrl).pData, &(systemPath.pData) );
+        if (!systemPath.isEmpty())
+        {
+            if (bAppendSep)
+                bufPYTHONPATH.append(static_cast<sal_Unicode>(SAL_PATHSEPARATOR));
+            bufPYTHONPATH.append(systemPath);
+            bAppendSep = true;
+        }
+        if( nNew == std::u16string_view::npos )
+            break;
+        nIndex = nNew + 1;
+    }
+    const char * oldEnv = getenv( "PYTHONPATH");
+    if( oldEnv )
+    {
+        if (bAppendSep)
+            bufPYTHONPATH.append( static_cast<sal_Unicode>(SAL_PATHSEPARATOR) );
+        bufPYTHONPATH.append( OUString(oldEnv, strlen(oldEnv), osl_getThreadTextEncoding()) );
+    }
+
+    OUString envVar("PYTHONPATH");
+    OUString envValue(bufPYTHONPATH.makeStringAndClear());
+    osl_setEnvironment(envVar.pData, envValue.pData);
+}
+
+namespace {
+
+void pythonInit() {
+    if ( Py_IsInitialized()) // may be inited by getComponentContext() already
+        return;
+
+    OUString pythonPath;
+    OUString pythonHome;
+    OUString path( "$BRAND_BASE_DIR/" LIBO_ETC_FOLDER "/" SAL_CONFIGFILE("pythonloader.uno" ));
+    rtl::Bootstrap::expandMacros(path); //TODO: detect failure
+    rtl::Bootstrap bootstrap(path);
+
+    // look for pythonhome
+    bootstrap.getFrom( "PYUNO_LOADER_PYTHONHOME", pythonHome );
+    bootstrap.getFrom( "PYUNO_LOADER_PYTHONPATH", pythonPath );
+
+    // pythonhome+pythonpath must be set before Py_Initialize(), otherwise there appear warning on the console
+    // sadly, there is no api for setting the pythonpath, we have to use the environment variable
+    if( !pythonHome.isEmpty() )
+        setPythonHome( pythonHome );
+
+    if( !pythonPath.isEmpty() )
+        prependPythonPath( pythonPath );
+
+#ifdef _WIN32
+    //extend PATH under windows to include the branddir/program so ssl libs will be found
+    //for use by terminal mailmerge dependency _ssl.pyd
+    OUString sEnvName("PATH");
+    OUString sPath;
+    osl_getEnvironment(sEnvName.pData, &sPath.pData);
+    OUString sBrandLocation("$BRAND_BASE_DIR/program");
+    rtl::Bootstrap::expandMacros(sBrandLocation);
+    osl::FileBase::getSystemPathFromFileURL(sBrandLocation, sBrandLocation);
+    sPath = OUStringBuffer(sPath).
+        append(static_cast<sal_Unicode>(SAL_PATHSEPARATOR)).
+        append(sBrandLocation).makeStringAndClear();
+    osl_setEnvironment(sEnvName.pData, sPath.pData);
+#endif
+
+    PyImport_AppendInittab( "pyuno", PyInit_pyuno );
+
+#if HAVE_FEATURE_READONLY_INSTALLSET
+    Py_DontWriteBytecodeFlag = 1;
+#endif
+
+    // initialize python
+    Py_Initialize();
+#if PY_VERSION_HEX < 0x03090000
+    PyEval_InitThreads();
+#endif
+
+    PyThreadState *tstate = PyThreadState_Get();
+    PyEval_ReleaseThread( tstate );
+#if PY_VERSION_HEX < 0x030B0000
+    // This tstate is never used again, so delete it here.
+    // This prevents an assertion in PyThreadState_Swap on the
+    // PyThreadAttach below.
+    PyThreadState_Delete(tstate);
+#endif
+}
+
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+pyuno_Loader_get_implementation(
+    css::uno::XComponentContext* ctx , css::uno::Sequence<css::uno::Any> const&)
+{
+    // tdf#114815 init python only once, via single-instace="true" in pythonloader.component
+    pythonInit();
+
+    Reference< XInterface > ret;
+
+    PyThreadAttach attach( PyInterpreterState_Head() );
+    {
+        // note: this can't race against getComponentContext() because
+        // either (in soffice.bin) CreateInstance() must be called before
+        // getComponentContext() can be called, or (in python.bin) the other
+        // way around
+        if( ! Runtime::isInitialized() )
+        {
+            Runtime::initialize( ctx );
+        }
+        Runtime runtime;
+
+        PyRef pyCtx = runtime.any2PyObject(
+            css::uno::Any( css::uno::Reference(ctx) ) );
+
+        PyRef clazz = getObjectFromLoaderModule( "Loader" );
+        PyRef args ( PyTuple_New( 1 ), SAL_NO_ACQUIRE, NOT_NULL );
+        PyTuple_SetItem( args.get(), 0 , pyCtx.getAcquired() );
+        PyRef pyInstance( PyObject_CallObject( clazz.get() , args.get() ), SAL_NO_ACQUIRE );
+        runtime.pyObject2Any( pyInstance ) >>= ret;
+    }
+    ret->acquire();
+    return ret.get();
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */