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authorArne Schwabe <arne@rfc2549.org>2012-04-16 19:21:14 +0200
committerArne Schwabe <arne@rfc2549.org>2012-04-16 19:21:14 +0200
commit3e4d8f433239c40311037616b1b8833a06651ae0 (patch)
tree98ab7fce0d011d34677b0beb762d389cb5c39199 /openssl/crypto/LPdir_unix.c
Initial import
Diffstat (limited to 'openssl/crypto/LPdir_unix.c')
-rw-r--r--openssl/crypto/LPdir_unix.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/openssl/crypto/LPdir_unix.c b/openssl/crypto/LPdir_unix.c
new file mode 100644
index 00000000..b004cd99
--- /dev/null
+++ b/openssl/crypto/LPdir_unix.c
@@ -0,0 +1,127 @@
+/* $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.
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <string.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <errno.h>
+#ifndef LPDIR_H
+#include "LPdir.h"
+#endif
+
+/* The POSIXly macro for the maximum number of characters in a file path
+ is NAME_MAX. However, some operating systems use PATH_MAX instead.
+ Therefore, it seems natural to first check for PATH_MAX and use that,
+ and if it doesn't exist, use NAME_MAX. */
+#if defined(PATH_MAX)
+# define LP_ENTRY_SIZE PATH_MAX
+#elif defined(NAME_MAX)
+# define LP_ENTRY_SIZE NAME_MAX
+#endif
+
+/* Of course, there's the possibility that neither PATH_MAX nor NAME_MAX
+ exist. It's also possible that NAME_MAX exists but is define to a
+ very small value (HP-UX offers 14), so we need to check if we got a
+ result, and if it meets a minimum standard, and create or change it
+ if not. */
+#if !defined(LP_ENTRY_SIZE) || LP_ENTRY_SIZE<255
+# undef LP_ENTRY_SIZE
+# define LP_ENTRY_SIZE 255
+#endif
+
+struct LP_dir_context_st
+{
+ DIR *dir;
+ char entry_name[LP_ENTRY_SIZE+1];
+};
+
+const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory)
+{
+ struct dirent *direntry = NULL;
+
+ if (ctx == NULL || directory == NULL)
+ {
+ errno = EINVAL;
+ return 0;
+ }
+
+ errno = 0;
+ if (*ctx == NULL)
+ {
+ *ctx = (LP_DIR_CTX *)malloc(sizeof(LP_DIR_CTX));
+ if (*ctx == NULL)
+ {
+ errno = ENOMEM;
+ return 0;
+ }
+ memset(*ctx, '\0', sizeof(LP_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;
+ }
+ }
+
+ direntry = readdir((*ctx)->dir);
+ if (direntry == NULL)
+ {
+ return 0;
+ }
+
+ strncpy((*ctx)->entry_name, direntry->d_name, 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)
+ {
+ int ret = closedir((*ctx)->dir);
+
+ free(*ctx);
+ switch (ret)
+ {
+ case 0:
+ return 1;
+ case -1:
+ return 0;
+ default:
+ break;
+ }
+ }
+ errno = EINVAL;
+ return 0;
+}