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