release/src/router/openssl/crypto/LPdir_win.c

   1 /*
   2  * Copyright (c) 2004, Richard Levitte <richard@levitte.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  15  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  16  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  17  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  18  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  19  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  20  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26 #include <windows.h>
  27 #include <tchar.h>
  28 #ifndef LPDIR_H
  29 #include "LPdir.h"
  30 #endif
  31
  32 /* We're most likely overcautious here, but let's reserve for
  33     broken WinCE headers and explicitly opt for UNICODE call.
  34     Keep in mind that our WinCE builds are compiled with -DUNICODE
  35     [as well as -D_UNICODE]. */
  36 #if defined(LP_SYS_WINCE) && !defined(FindFirstFile)
  37 # define FindFirstFile FindFirstFileW
  38 #endif
  39 #if defined(LP_SYS_WINCE) && !defined(FindFirstFile)
  40 # define FindNextFile FindNextFileW
  41 #endif
  42
  43 #ifndef NAME_MAX
  44 #define NAME_MAX 255
  45 #endif
  46
  47 struct LP_dir_context_st
  48 {
  49   WIN32_FIND_DATA ctx;
  50   HANDLE handle;
  51   char entry_name[NAME_MAX+1];
  52 };
  53
  54 const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory)
  55 {
  56   if (ctx == NULL || directory == NULL)
  57     {
  58       errno = EINVAL;
  59       return 0;
  60     }
  61
  62   errno = 0;
  63   if (*ctx == NULL)
  64     {
  65       const char *extdir = directory;
  66       char *extdirbuf = NULL;
  67       size_t dirlen = strlen (directory);
  68
  69       if (dirlen == 0)
  70         {
  71           errno = ENOENT;
  72           return 0;
  73         }
  74
  75       *ctx = (LP_DIR_CTX *)malloc(sizeof(LP_DIR_CTX));
  76       if (*ctx == NULL)
  77         {
  78           errno = ENOMEM;
  79           return 0;
  80         }
  81       memset(*ctx, '\0', sizeof(LP_DIR_CTX));
  82
  83       if (directory[dirlen-1] != '*')
  84         {
  85           extdirbuf = (char *)malloc(dirlen + 3);
  86           if (extdirbuf == NULL)
  87             {
  88               free(*ctx);
  89               *ctx = NULL;
  90               errno = ENOMEM;
  91               return 0;
  92             }
  93           if (directory[dirlen-1] != '/' && directory[dirlen-1] != '\\')
  94             extdir = strcat(strcpy (extdirbuf,directory),"/*");
  95           else
  96             extdir = strcat(strcpy (extdirbuf,directory),"*");
  97         }
  98
  99       if (sizeof(TCHAR) != sizeof(char))
 100         {
 101           TCHAR *wdir = NULL;
 102           /* len_0 denotes string length *with* trailing 0 */
 103           size_t index = 0,len_0 = strlen(extdir) + 1;
 104
 105           wdir = (TCHAR *)calloc(len_0, sizeof(TCHAR));
 106           if (wdir == NULL)
 107             {
 108               if (extdirbuf != NULL)
 109                 {
 110                   free (extdirbuf);
 111                 }
 112               free(*ctx);
 113               *ctx = NULL;
 114               errno = ENOMEM;
 115               return 0;
 116             }
 117
 118 #ifdef LP_MULTIBYTE_AVAILABLE
 119           if (!MultiByteToWideChar(CP_ACP, 0, extdir, len_0, (WCHAR *)wdir, len_0))
 120 #endif
 121             for (index = 0; index < len_0; index++)
 122               wdir[index] = (TCHAR)extdir[index];
 123
 124           (*ctx)->handle = FindFirstFile(wdir, &(*ctx)->ctx);
 125
 126           free(wdir);
 127         }
 128       else
 129         {
 130           (*ctx)->handle = FindFirstFile((TCHAR *)extdir, &(*ctx)->ctx);
 131         }
 132       if (extdirbuf != NULL)
 133         {
 134           free (extdirbuf);
 135         }
 136
 137       if ((*ctx)->handle == INVALID_HANDLE_VALUE)
 138         {
 139           free(*ctx);
 140           *ctx = NULL;
 141           errno = EINVAL;
 142           return 0;
 143         }
 144     }
 145   else
 146     {
 147       if (FindNextFile((*ctx)->handle, &(*ctx)->ctx) == FALSE)
 148         {
 149           return 0;
 150         }
 151     }
 152   if (sizeof(TCHAR) != sizeof(char))
 153     {
 154       TCHAR *wdir = (*ctx)->ctx.cFileName;
 155       size_t index, len_0 = 0;
 156
 157       while (wdir[len_0] && len_0 < (sizeof((*ctx)->entry_name) - 1)) len_0++;
 158       len_0++;
 159
 160 #ifdef LP_MULTIBYTE_AVAILABLE
 161       if (!WideCharToMultiByte(CP_ACP, 0, (WCHAR *)wdir, len_0, (*ctx)->entry_name,
 162                                sizeof((*ctx)->entry_name), NULL, 0))
 163 #endif
 164         for (index = 0; index < len_0; index++)
 165           (*ctx)->entry_name[index] = (char)wdir[index];
 166     }
 167   else
 168     strncpy((*ctx)->entry_name, (const char *)(*ctx)->ctx.cFileName,
 169             sizeof((*ctx)->entry_name)-1);
 170
 171   (*ctx)->entry_name[sizeof((*ctx)->entry_name)-1] = '\0';
 172
 173   return (*ctx)->entry_name;
 174 }
 175
 176 int LP_find_file_end(LP_DIR_CTX **ctx)
 177 {
 178   if (ctx != NULL && *ctx != NULL)
 179     {
 180       FindClose((*ctx)->handle);
 181       free(*ctx);
 182       *ctx = NULL;
 183       return 1;
 184     }
 185   errno = EINVAL;
 186   return 0;
 187 }