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/* $LP: LPlib/source/LPdir_unix.c,v 1.11 2004/09/23 22:07:22 _cvs_levitte Exp $ */
/*
* 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. */
#if !defined(_POSIX_C_SOURCE)
#define _POSIX_C_SOURCE 201409 /* for readdir_r */
#endif
#include "directory.h"
#if !defined(OPENSSL_WINDOWS)
#include <dirent.h>
#include <errno.h>
#include <string.h>
#if defined(OPENSSL_PNACL)
/* pnacl doesn't include readdir_r! So we do the best we can. */
int readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result) {
errno = 0;
*result = readdir(dirp);
if (*result != NULL) {
return 0;
}
if (errno) {
return 1;
}
return 0;
}
#endif
struct OPENSSL_dir_context_st {
DIR *dir;
struct dirent dirent;
};
const char *OPENSSL_DIR_read(OPENSSL_DIR_CTX **ctx, const char *directory) {
struct dirent *dirent;
if (ctx == NULL || directory == NULL) {
errno = EINVAL;
return NULL;
}
errno = 0;
if (*ctx == NULL) {
*ctx = malloc(sizeof(OPENSSL_DIR_CTX));
if (*ctx == NULL) {
errno = ENOMEM;
return 0;
}
memset(*ctx, 0, sizeof(OPENSSL_DIR_CTX));
(*ctx)->dir = opendir(directory);
if ((*ctx)->dir == NULL) {
int save_errno = errno; /* Probably not needed, but I'm paranoid */
free(*ctx);
*ctx = NULL;
errno = save_errno;
return 0;
}
}
if (readdir_r((*ctx)->dir, &(*ctx)->dirent, &dirent) != 0 ||
dirent == NULL) {
return 0;
}
return (*ctx)->dirent.d_name;
}
int OPENSSL_DIR_end(OPENSSL_DIR_CTX **ctx) {
if (ctx != NULL && *ctx != NULL) {
int r = closedir((*ctx)->dir);
free(*ctx);
*ctx = NULL;
return r == 0;
}
errno = EINVAL;
return 0;
}
#endif /* !OPENSSL_WINDOWS */
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