Branch data     Line data    Source code

       1                 :            : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 :            : /*
       3                 :            :  * This file is part of the LibreOffice project.
       4                 :            :  *
       5                 :            :  * This Source Code Form is subject to the terms of the Mozilla Public
       6                 :            :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7                 :            :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8                 :            :  *
       9                 :            :  * This file incorporates work covered by the following license notice:
      10                 :            :  *
      11                 :            :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12                 :            :  *   contributor license agreements. See the NOTICE file distributed
      13                 :            :  *   with this work for additional information regarding copyright
      14                 :            :  *   ownership. The ASF licenses this file to you under the Apache
      15                 :            :  *   License, Version 2.0 (the "License"); you may not use this file
      16                 :            :  *   except in compliance with the License. You may obtain a copy of
      17                 :            :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18                 :            :  */
      19                 :            : 
      20                 :            : /* make Python.h go first as a hack to work around _POSIX_C_SOURCE redefinition
      21                 :            :    warnings: */
      22                 :            : #include "Python.h"
      23                 :            : 
      24                 :            : #include "sal/config.h"
      25                 :            : 
      26                 :            : #include <stdlib.h>
      27                 :            : #include <string.h>
      28                 :            : 
      29                 :            : #if defined LINUX && !defined __USE_GNU
      30                 :            : #define __USE_GNU
      31                 :            : #endif
      32                 :            : #include <dlfcn.h>
      33                 :            : 
      34                 :            : #include "rtl/string.h"
      35                 :            : 
      36                 :            : /* A wrapper around libpyuno.so, making sure the latter is loaded RTLD_GLOBAL
      37                 :            :    so that C++ exception handling works with old GCC versions (that determine
      38                 :            :    RTTI identity by comparing string addresses rather than string content).
      39                 :            : */
      40                 :            : 
      41                 :          0 : static void * load(void * address, char const * symbol) {
      42                 :            :     Dl_info dl_info;
      43                 :            :     char * slash;
      44                 :            :     size_t len;
      45                 :            :     char * libname;
      46                 :            :     void * h;
      47                 :            :     void * func;
      48                 :          0 :     if (dladdr(address, &dl_info) == 0) {
      49                 :          0 :         abort();
      50                 :            :     }
      51                 :          0 :     slash = strrchr(dl_info.dli_fname, '/');
      52                 :          0 :     if (slash == NULL) {
      53                 :          0 :         abort();
      54                 :            :     }
      55                 :          0 :     len = slash - dl_info.dli_fname + 1;
      56                 :          0 :     libname = malloc(
      57                 :            :         len + RTL_CONSTASCII_LENGTH(SAL_DLLPREFIX "pyuno" SAL_DLLEXTENSION)
      58                 :          0 :         + 1);
      59                 :          0 :     if (libname == 0) {
      60                 :          0 :         abort();
      61                 :            :     }
      62                 :          0 :     strncpy(libname, dl_info.dli_fname, len);
      63                 :          0 :     strcpy(libname + len, SAL_DLLPREFIX "pyuno" SAL_DLLEXTENSION);
      64                 :          0 :     h = dlopen(libname, RTLD_NOW | RTLD_GLOBAL);
      65                 :          0 :     free(libname);
      66                 :          0 :     if (h == NULL) {
      67                 :          0 :         abort();
      68                 :            :     }
      69                 :          0 :     func = dlsym(h, symbol);
      70                 :          0 :     if (func == NULL) {
      71                 :          0 :         abort();
      72                 :            :     }
      73                 :          0 :     return func;
      74                 :            : }
      75                 :            : 
      76                 :            : #if PY_MAJOR_VERSION >= 3
      77                 :            : 
      78                 :            : SAL_DLLPUBLIC_EXPORT PyObject * PyInit_pyuno(void) {
      79                 :            :     return
      80                 :            :         ((PyObject * (*)(void)) load((void *) &PyInit_pyuno, "PyInit_pyuno"))();
      81                 :            : }
      82                 :            : 
      83                 :            : #else
      84                 :            : 
      85                 :          0 : SAL_DLLPUBLIC_EXPORT void initpyuno(void) {
      86                 :          0 :     ((void (*)(void)) load((void *) &initpyuno, "initpyuno"))();
      87                 :          0 : }
      88                 :            : 
      89                 :            : #endif
      90                 :            : 
      91                 :            : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */