A local copy of OpenSSL from GitHub
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/*
* Copyright 2004-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <windows.h>
#include <tchar.h>
#ifndef LPDIR_H
# include "LPdir.h"
#endif
/*
* We're most likely overcautious here, but let's reserve for broken WinCE
* headers and explicitly opt for UNICODE call. Keep in mind that our WinCE
* builds are compiled with -DUNICODE [as well as -D_UNICODE].
*/
#if defined(LP_SYS_WINCE) && !defined(FindFirstFile)
# define FindFirstFile FindFirstFileW
#endif
#if defined(LP_SYS_WINCE) && !defined(FindNextFile)
# define FindNextFile FindNextFileW
#endif
#ifndef NAME_MAX
# define NAME_MAX 255
#endif
struct LP_dir_context_st {
WIN32_FIND_DATA ctx;
HANDLE handle;
char entry_name[NAME_MAX + 1];
};
const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory)
{
if (ctx == NULL || directory == NULL) {
errno = EINVAL;
return 0;
}
errno = 0;
if (*ctx == NULL) {
const char *extdir = directory;
char *extdirbuf = NULL;
size_t dirlen = strlen(directory);
if (dirlen == 0) {
errno = ENOENT;
return 0;
}
*ctx = malloc(sizeof(**ctx));
if (*ctx == NULL) {
errno = ENOMEM;
return 0;
}
memset(*ctx, 0, sizeof(**ctx));
if (directory[dirlen - 1] != '*') {
extdirbuf = (char *)malloc(dirlen + 3);
if (extdirbuf == NULL) {
free(*ctx);
*ctx = NULL;
errno = ENOMEM;
return 0;
}
if (directory[dirlen - 1] != '/' && directory[dirlen - 1] != '\\')
extdir = strcat(strcpy(extdirbuf, directory), "/*");
else
extdir = strcat(strcpy(extdirbuf, directory), "*");
}
if (sizeof(TCHAR) != sizeof(char)) {
TCHAR *wdir = NULL;
/* len_0 denotes string length *with* trailing 0 */
size_t index = 0, len_0 = strlen(extdir) + 1;
wdir = (TCHAR *)calloc(len_0, sizeof(TCHAR));
if (wdir == NULL) {
if (extdirbuf != NULL) {
free(extdirbuf);
}
free(*ctx);
*ctx = NULL;
errno = ENOMEM;
return 0;
}
#ifdef LP_MULTIBYTE_AVAILABLE
if (!MultiByteToWideChar
(CP_ACP, 0, extdir, len_0, (WCHAR *)wdir, len_0))
#endif
for (index = 0; index < len_0; index++)
wdir[index] = (TCHAR)extdir[index];
(*ctx)->handle = FindFirstFile(wdir, &(*ctx)->ctx);
free(wdir);
} else {
(*ctx)->handle = FindFirstFile((TCHAR *)extdir, &(*ctx)->ctx);
}
if (extdirbuf != NULL) {
free(extdirbuf);
}
if ((*ctx)->handle == INVALID_HANDLE_VALUE) {
free(*ctx);
*ctx = NULL;
errno = EINVAL;
return 0;
}
} else {
if (FindNextFile((*ctx)->handle, &(*ctx)->ctx) == FALSE) {
return 0;
}
}
if (sizeof(TCHAR) != sizeof(char)) {
TCHAR *wdir = (*ctx)->ctx.cFileName;
size_t index, len_0 = 0;
while (wdir[len_0] && len_0 < (sizeof((*ctx)->entry_name) - 1))
len_0++;
len_0++;
#ifdef LP_MULTIBYTE_AVAILABLE
if (!WideCharToMultiByte
(CP_ACP, 0, (WCHAR *)wdir, len_0, (*ctx)->entry_name,
sizeof((*ctx)->entry_name), NULL, 0))
#endif
for (index = 0; index < len_0; index++)
(*ctx)->entry_name[index] = (char)wdir[index];
} else
strncpy((*ctx)->entry_name, (const char *)(*ctx)->ctx.cFileName,
sizeof((*ctx)->entry_name) - 1);
(*ctx)->entry_name[sizeof((*ctx)->entry_name) - 1] = '\0';
return (*ctx)->entry_name;
}
int LP_find_file_end(LP_DIR_CTX **ctx)
{
if (ctx != NULL && *ctx != NULL) {
FindClose((*ctx)->handle);
free(*ctx);
*ctx = NULL;
return 1;
}
errno = EINVAL;
return 0;
}