libbrownie/drd64_libbrownie_searchlib.c

   1 /*DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64
   2
   3                          D r . D e a m o n  6 4
   4                         for INTEL64(R), AMD64(R)
   5
   6    Copyright(C) 2007-2009 Koine Yuusuke(koinec). All rights reserved.
   7
   8 Redistribution and use in source and binary forms, with or without
   9 modification, are permitted provided that the following conditions are met:
  10
  11  1. Redistributions of source code must retain the above copyright notice,
  12     this list of conditions and the following disclaimer.
  13  2. Redistributions in binary form must reproduce the above copyright
  14     notice, this list of conditions and the following disclaimer in the
  15     documentation and/or other materials provided with the distribution.
  16
  17 THIS SOFTWARE IS PROVIDED BY Koine Yuusuke(koinec) ``AS IS'' AND ANY
  18 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  20 DISCLAIMED. IN NO EVENT SHALL Koine Yuusuke(koinec) OR CONTRIBUTORS BE
  21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  27 OF THE POSSIBILITY OF SUCH DAMAGE.
  28
  29 DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64DrDeAmOn64*/
  30
  31 /* File Info -----------------------------------------------------------
  32 File: drd64_.c
  33 Function:
  34 Comment:
  35 ----------------------------------------------------------------------*/
  36
  37 #define DRD64_SRC_LIBBROWNIE_SEARCHLIB
  38 #include"drd64_libbrownie.h"
  39
  40
  41 /*----------------------------------------------------------------------
  42 ----------------------------------------------------------------------*/
  43 int
  44         LibBrownie_SearchLib_IsExistLibrary(
  45                         char    *pstr_path,
  46                         char    *pstr_solibname )
  47 {
  48         int             i_result;
  49         size_t  sz_len;
  50         struct  stat    t_filestat;
  51         char    str_solibpath[DRD64_MAX_PATH];
  52
  53         sz_len  = strnlen( pstr_path, DRD64_MAX_PATH );
  54         sz_len  += strnlen( pstr_solibname, DRD64_MAX_PATH );
  55
  56         if( DRD64_MAX_PATH - 1 <= sz_len )      {
  57                 return -0x01;
  58         }
  59
  60         strncpy( str_solibpath, pstr_path, DRD64_MAX_PATH );
  61         strncat( str_solibpath, "/", DRD64_MAX_PATH );
  62         strncat( str_solibpath, pstr_solibname, DRD64_MAX_PATH );
  63         i_result        = stat( str_solibpath, &t_filestat );
  64
  65         return i_result;
  66 }
  67
  68
  69 /***********************************************************************
  70 ***********************************************************************/
  71 LIBBROWNIE_SEARCHLIB_API
  72 int
  73         LibBrownie_GetLibraryPath(
  74                         char    *pstr_solibpath,
  75                         char    *pstr_solibname,
  76                         char    *pstr_rpath,
  77                         char    *pstr_ldsohints )
  78 {
  79         int             i_result;
  80         int             i_flag;
  81         size_t  sz_len;
  82         char    *pstr_hintslist;
  83         char    *pstr_nowpath;
  84         char    *pstr_nowpos;
  85
  86         if( NULL == pstr_solibpath )    {
  87                 return -0x01;
  88         }
  89
  90         if( NULL == pstr_ldsohints )    {
  91                 return -0x02;
  92         }
  93
  94         if( NULL != pstr_rpath )        {
  95                 i_result        = LibBrownie_SearchLib_IsExistLibrary( pstr_rpath, pstr_solibname );
  96                 if( 0x00 == i_result )  {
  97                         pstr_nowpath    = pstr_rpath;
  98                         goto goto_LibBrownie_GetLibraryPath_setting;
  99                 }
 100         }
 101
 102         sz_len  = strlen( pstr_ldsohints );
 103         pstr_hintslist  = (char *)alloca( sz_len + 1 );
 104         if( NULL == pstr_hintslist )    {
 105                 return -0x03;
 106         }
 107
 108         strncpy( pstr_hintslist, pstr_ldsohints, sz_len + 1 );
 109
 110         i_flag                  = 0x00;
 111         pstr_nowpath    = pstr_hintslist;
 112         pstr_nowpos             = pstr_hintslist;
 113         do{
 114                 if(( ':' == *pstr_nowpos ) || ( '\0' == *pstr_nowpos))  {
 115                         if( '\0' == *pstr_nowpos )      { i_flag        = 0x01; }
 116                         else                                            { *pstr_nowpos  = '\0'; }
 117                         i_result        = LibBrownie_SearchLib_IsExistLibrary( pstr_nowpath, pstr_solibname );
 118                         if( 0x00 == i_result )  {
 119                                 goto goto_LibBrownie_GetLibraryPath_setting;
 120                         }
 121
 122                         if( 0x00 != i_flag )    {
 123                                 return -0x04;
 124                         }
 125                         else
 126                                 { *pstr_nowpos  = ':'; }
 127
 128                         pstr_nowpath    = pstr_nowpos + 1;
 129                 }
 130
 131         }while( '\0' != *pstr_nowpos++ );
 132
 133 goto_LibBrownie_GetLibraryPath_setting:
 134         strncpy( pstr_solibpath, pstr_nowpath, DRD64_MAX_PATH );
 135         strncat( pstr_solibpath, "/", DRD64_MAX_PATH );
 136         strncat( pstr_solibpath, pstr_solibname, DRD64_MAX_PATH );
 137
 138         return 0x00;
 139 }
 140
 141
 142 /* EOF of drd64_.c ----------------------------------- */