source/front-end/src/osal_files_unix.c

   1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   2  *   Mupen64plus-ui-console - osal_files_unix.c                            *
   3  *   Mupen64Plus homepage: http://code.google.com/p/mupen64plus/           *
   4  *   Copyright (C) 2009 Richard Goedeken                                   *
   5  *                                                                         *
   6  *   This program is free software; you can redistribute it and/or modify  *
   7  *   it under the terms of the GNU General Public License as published by  *
   8  *   the Free Software Foundation; either version 2 of the License, or     *
   9  *   (at your option) any later version.                                   *
  10  *                                                                         *
  11  *   This program is distributed in the hope that it will be useful,       *
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  14  *   GNU General Public License for more details.                          *
  15  *                                                                         *
  16  *   You should have received a copy of the GNU General Public License     *
  17  *   along with this program; if not, write to the                         *
  18  *   Free Software Foundation, Inc.,                                       *
  19  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
  20  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  21
  22 /* This implements all kinds of system-dependent file handling
  23  *
  24  */
  25
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <sys/types.h>
  30 #include <dirent.h>  // for opendir(), readdir(), closedir()
  31
  32 #include "main.h"
  33 #include "m64p_types.h"
  34 #include "osal_preproc.h"
  35 #include "osal_files.h"
  36
  37 /* definitions for system directories to search when looking for mupen64plus plugins */
  38 #if defined(PLUGINDIR)
  39   const int   osal_libsearchdirs = 4;
  40   const char *osal_libsearchpath[4] = { PLUGINDIR, "/usr/local/lib/mupen64plus",  "/usr/lib/mupen64plus", "./" };
  41 #else
  42   const int   osal_libsearchdirs = 3;
  43   const char *osal_libsearchpath[3] = { "/usr/local/lib/mupen64plus",  "/usr/lib/mupen64plus", "./" };
  44 #endif
  45
  46 osal_lib_search *osal_library_search(const char *searchpath)
  47 {
  48     osal_lib_search *head = NULL, *curr = NULL;
  49     DIR *dir;
  50     struct dirent *entry;
  51
  52 #ifdef __APPLE__
  53     const char* suffix = ".dylib";
  54 #else
  55     const char* suffix = ".so";
  56 #endif
  57
  58     dir = opendir(searchpath);
  59     if (dir == NULL)
  60         return NULL;
  61
  62     /* look for any shared libraries in this folder */
  63     while ((entry = readdir(dir)) != NULL)
  64     {
  65         osal_lib_search *newlib = NULL;
  66         if (strcmp(entry->d_name + strlen(entry->d_name) - strlen(suffix), suffix) != 0)
  67             continue;
  68         /* this is a .so file, so add it to the list */
  69         newlib = malloc(sizeof(osal_lib_search));
  70         if (newlib == NULL)
  71         {
  72             DebugMessage(M64MSG_ERROR, "Memory allocation error in osal_library_search()!");
  73             osal_free_lib_list(head);
  74             closedir(dir);
  75             return NULL;
  76         }
  77         if (head == NULL)
  78         {
  79             head = curr = newlib;
  80         }
  81         else
  82         {
  83             curr->next = newlib;
  84             curr = newlib;
  85         }
  86         /* set up the filepath and filename members */
  87         strncpy(curr->filepath, searchpath, PATH_MAX-2);
  88         curr->filepath[PATH_MAX-2] = 0;
  89         if (curr->filepath[strlen(curr->filepath)-1] != '/')
  90             strcat(curr->filepath, "/");
  91         int pathlen = strlen(curr->filepath);
  92         curr->filename = curr->filepath + pathlen;
  93         strncat(curr->filepath, entry->d_name, PATH_MAX - pathlen - 1);
  94         curr->filepath[PATH_MAX-1] = 0;
  95         /* set plugin_type and next pointer */
  96         curr->plugin_type = 0;
  97         curr->next = NULL;
  98     }
  99
 100     closedir(dir);
 101     return head;
 102 }
 103
 104 void osal_free_lib_list(osal_lib_search *head)
 105 {
 106     while (head != NULL)
 107     {
 108         osal_lib_search *next = head->next;
 109         free(head);
 110         head = next;
 111     }
 112 }
 113