[thirdparty/openssl.git] / crypto / LPdir_win.c

/*
 * Copyright 2004-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (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
 */

/*
 * This file is dual-licensed and is also available under the following
 * terms:
 *
 * Copyright (c) 2004, Richard Levitte <richard@levitte.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <windows.h>
#include <tchar.h>
#include "internal/numbers.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

#ifdef CP_UTF8
# define CP_DEFAULT CP_UTF8
#else
# define CP_DEFAULT CP_ACP
#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) {
        size_t dirlen = strlen(directory);

        if (dirlen == 0 || dirlen > INT_MAX - 3) {
            errno = ENOENT;
            return 0;
        }

        *ctx = malloc(sizeof(**ctx));
        if (*ctx == NULL) {
            errno = ENOMEM;
            return 0;
        }
        memset(*ctx, 0, sizeof(**ctx));

        if (sizeof(TCHAR) != sizeof(char)) {
            TCHAR *wdir = NULL;
            /* len_0 denotes string length *with* trailing 0 */
            size_t index = 0, len_0 = dirlen + 1;
#ifdef LP_MULTIBYTE_AVAILABLE
            int sz = 0;
            UINT cp;

            do {
# ifdef CP_UTF8
                if ((sz = MultiByteToWideChar((cp = CP_UTF8), 0,
                                              directory, (int)len_0,
                                              NULL, 0)) > 0 ||
                    GetLastError() != ERROR_NO_UNICODE_TRANSLATION)
                    break;
# endif
                sz = MultiByteToWideChar((cp = CP_ACP), 0,
                                         directory, (int)len_0,
                                         NULL, 0);
            } while (0);

            if (sz > 0) {
                /*
                 * allocate two additional characters in case we need to
                 * concatenate asterisk, |sz| covers trailing '\0'!
                 */
                wdir = _alloca((sz + 2) * sizeof(TCHAR));
                if (!MultiByteToWideChar(cp, 0, directory, (int)len_0,
                                         (WCHAR *)wdir, sz)) {
                    free(*ctx);
                    *ctx = NULL;
                    errno = EINVAL;
                    return 0;
                }
            } else
#endif
            {
                sz = (int)len_0;
                /*
                 * allocate two additional characters in case we need to
                 * concatenate asterisk, |sz| covers trailing '\0'!
                 */
                wdir = _alloca((sz + 2) * sizeof(TCHAR));
                for (index = 0; index < len_0; index++)
                    wdir[index] = (TCHAR)directory[index];
            }

            sz--; /* wdir[sz] is trailing '\0' now */
            if (wdir[sz - 1] != TEXT('*')) {
                if (wdir[sz - 1] != TEXT('/') && wdir[sz - 1] != TEXT('\\'))
                    _tcscpy(wdir + sz, TEXT("/*"));
                else
                    _tcscpy(wdir + sz, TEXT("*"));
            }

            (*ctx)->handle = FindFirstFile(wdir, &(*ctx)->ctx);
        } else {
            if (directory[dirlen - 1] != '*') {
                char *buf = _alloca(dirlen + 3);

                strcpy(buf, directory);
                if (buf[dirlen - 1] != '/' && buf[dirlen - 1] != '\\')
                    strcpy(buf + dirlen, "/*");
                else
                    strcpy(buf + dirlen, "*");

                directory = buf;
            }

            (*ctx)->handle = FindFirstFile((TCHAR *)directory, &(*ctx)->ctx);
        }

        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_DEFAULT, 0, (WCHAR *)wdir, (int)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;
}
Commit	Line	Data
	1	/*
	2	* Copyright 2004-2016 The OpenSSL Project Authors. All Rights Reserved.
	3	*
	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
	8	*/
	9
	10	/*
	11	* This file is dual-licensed and is also available under the following
	12	* terms:
	13	*
	14	* Copyright (c) 2004, Richard Levitte <richard@levitte.org>
	15	* All rights reserved.
	16	*
	17	* Redistribution and use in source and binary forms, with or without
	18	* modification, are permitted provided that the following conditions
	19	* are met:
	20	* 1. Redistributions of source code must retain the above copyright
	21	* notice, this list of conditions and the following disclaimer.
	22	* 2. Redistributions in binary form must reproduce the above copyright
	23	* notice, this list of conditions and the following disclaimer in the
	24	* documentation and/or other materials provided with the distribution.
	25	*
	26	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	27	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	28	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	29	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	30	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	31	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	32	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	33	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	34	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	35	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	36	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	37	*/
	38
	39	#include <windows.h>
	40	#include <tchar.h>
	41	#include "internal/numbers.h"
	42	#ifndef LPDIR_H
	43	# include "LPdir.h"
	44	#endif
	45
	46	/*
	47	* We're most likely overcautious here, but let's reserve for broken WinCE
	48	* headers and explicitly opt for UNICODE call. Keep in mind that our WinCE
	49	* builds are compiled with -DUNICODE [as well as -D_UNICODE].
	50	*/
	51	#if defined(LP_SYS_WINCE) && !defined(FindFirstFile)
	52	# define FindFirstFile FindFirstFileW
	53	#endif
	54	#if defined(LP_SYS_WINCE) && !defined(FindNextFile)
	55	# define FindNextFile FindNextFileW
	56	#endif
	57
	58	#ifndef NAME_MAX
	59	# define NAME_MAX 255
	60	#endif
	61
	62	#ifdef CP_UTF8
	63	# define CP_DEFAULT CP_UTF8
	64	#else
	65	# define CP_DEFAULT CP_ACP
	66	#endif
	67
	68	struct LP_dir_context_st {
	69	WIN32_FIND_DATA ctx;
	70	HANDLE handle;
	71	char entry_name[NAME_MAX + 1];
	72	};
	73
	74	const char LP_find_file(LP_DIR_CTX ctx, const char directory)
	75	{
	76	if (ctx == NULL \|\| directory == NULL) {
	77	errno = EINVAL;
	78	return 0;
	79	}
	80
	81	errno = 0;
	82	if (*ctx == NULL) {
	83	size_t dirlen = strlen(directory);
	84
	85	if (dirlen == 0 \|\| dirlen > INT_MAX - 3) {
	86	errno = ENOENT;
	87	return 0;
	88	}
	89
	90	ctx = malloc(sizeof(*ctx));
	91	if (*ctx == NULL) {
	92	errno = ENOMEM;
	93	return 0;
	94	}
	95	memset(ctx, 0, sizeof(*ctx));
	96
	97	if (sizeof(TCHAR) != sizeof(char)) {
	98	TCHAR *wdir = NULL;
	99	/* len_0 denotes string length with trailing 0 */
	100	size_t index = 0, len_0 = dirlen + 1;
	101	#ifdef LP_MULTIBYTE_AVAILABLE
	102	int sz = 0;
	103	UINT cp;
	104
	105	do {
	106	# ifdef CP_UTF8
	107	if ((sz = MultiByteToWideChar((cp = CP_UTF8), 0,
	108	directory, (int)len_0,
	109	NULL, 0)) > 0 \|\|
	110	GetLastError() != ERROR_NO_UNICODE_TRANSLATION)
	111	break;
	112	# endif
	113	sz = MultiByteToWideChar((cp = CP_ACP), 0,
	114	directory, (int)len_0,
	115	NULL, 0);
	116	} while (0);
	117
	118	if (sz > 0) {
	119	/*
	120	* allocate two additional characters in case we need to
	121	* concatenate asterisk, \|sz\| covers trailing '\0'!
	122	*/
	123	wdir = _alloca((sz + 2) * sizeof(TCHAR));
	124	if (!MultiByteToWideChar(cp, 0, directory, (int)len_0,
	125	(WCHAR *)wdir, sz)) {
	126	free(*ctx);
	127	*ctx = NULL;
	128	errno = EINVAL;
	129	return 0;
	130	}
	131	} else
	132	#endif
	133	{
	134	sz = (int)len_0;
	135	/*
	136	* allocate two additional characters in case we need to
	137	* concatenate asterisk, \|sz\| covers trailing '\0'!
	138	*/
	139	wdir = _alloca((sz + 2) * sizeof(TCHAR));
	140	for (index = 0; index < len_0; index++)
	141	wdir[index] = (TCHAR)directory[index];
	142	}
	143
	144	sz--; /* wdir[sz] is trailing '\0' now */
	145	if (wdir[sz - 1] != TEXT('*')) {
	146	if (wdir[sz - 1] != TEXT('/') && wdir[sz - 1] != TEXT('\\'))
	147	_tcscpy(wdir + sz, TEXT("/*"));
	148	else
	149	_tcscpy(wdir + sz, TEXT("*"));
	150	}
	151
	152	(ctx)->handle = FindFirstFile(wdir, &(ctx)->ctx);
	153	} else {
	154	if (directory[dirlen - 1] != '*') {
	155	char *buf = _alloca(dirlen + 3);
	156
	157	strcpy(buf, directory);
	158	if (buf[dirlen - 1] != '/' && buf[dirlen - 1] != '\\')
	159	strcpy(buf + dirlen, "/*");
	160	else
	161	strcpy(buf + dirlen, "*");
	162
	163	directory = buf;
	164	}
	165
	166	(ctx)->handle = FindFirstFile((TCHAR )directory, &(*ctx)->ctx);
	167	}
	168
	169	if ((*ctx)->handle == INVALID_HANDLE_VALUE) {
	170	free(*ctx);
	171	*ctx = NULL;
	172	errno = EINVAL;
	173	return 0;
	174	}
	175	} else {
	176	if (FindNextFile((ctx)->handle, &(ctx)->ctx) == FALSE) {
	177	return 0;
	178	}
	179	}
	180	if (sizeof(TCHAR) != sizeof(char)) {
	181	TCHAR wdir = (ctx)->ctx.cFileName;
	182	size_t index, len_0 = 0;
	183
	184	while (wdir[len_0] && len_0 < (sizeof((*ctx)->entry_name) - 1))
	185	len_0++;
	186	len_0++;
	187
	188	#ifdef LP_MULTIBYTE_AVAILABLE
	189	if (!WideCharToMultiByte(CP_DEFAULT, 0, (WCHAR *)wdir, (int)len_0,
	190	(*ctx)->entry_name,
	191	sizeof((*ctx)->entry_name), NULL, 0))
	192	#endif
	193	for (index = 0; index < len_0; index++)
	194	(*ctx)->entry_name[index] = (char)wdir[index];
	195	} else
	196	strncpy((ctx)->entry_name, (const char )(*ctx)->ctx.cFileName,
	197	sizeof((*ctx)->entry_name) - 1);
	198
	199	(ctx)->entry_name[sizeof((ctx)->entry_name) - 1] = '\0';
	200
	201	return (*ctx)->entry_name;
	202	}
	203
	204	int LP_find_file_end(LP_DIR_CTX **ctx)
	205	{
	206	if (ctx != NULL && *ctx != NULL) {
	207	FindClose((*ctx)->handle);
	208	free(*ctx);
	209	*ctx = NULL;
	210	return 1;
	211	}
	212	errno = EINVAL;
	213	return 0;
	214	}