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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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