summaryrefslogtreecommitdiff
path: root/pyuno/source/loader/pyuno_loader.cxx
blob: da0467f450c6553e6833f8cc3e06f4c452fbd792 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
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: */