From 446632197c7f093ed6d0f4d48dcb03e6254828fe Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Thu, 13 Nov 2014 15:13:24 +0100
Subject: Add crypt_r(), etc.

Add crypt_add_format(), crypt_r(), crypt_md5_r(), crypt_sha256_r() and
crypt_sha512_r().
---
 cpukit/libcrypt/crypt.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 cpukit/libcrypt/crypt.c

(limited to 'cpukit/libcrypt/crypt.c')

diff --git a/cpukit/libcrypt/crypt.c b/cpukit/libcrypt/crypt.c
new file mode 100644
index 0000000000..b6acb97335
--- /dev/null
+++ b/cpukit/libcrypt/crypt.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <info@embedded-brains.de>
+ *
+ * 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 <crypt.h>
+#include <string.h>
+
+static char *
+cf_default_func(const char *pw, const char *salt, struct crypt_data *data)
+{
+	(void)salt;
+
+	strncpy(&data->buffer[0], pw, sizeof(data->buffer) - 1);
+	data->buffer[sizeof(data->buffer) - 1] = '\0';
+
+	return (&data->buffer[0]);
+}
+
+static struct crypt_format cf_default =
+  CRYPT_FORMAT_INITIALIZER(cf_default_func, NULL);
+
+static SLIST_HEAD(, crypt_format) cf_head = {
+	&cf_default
+};
+
+void crypt_add_format(struct crypt_format *cf)
+{
+	if (cf->link.sle_next == NULL)
+		SLIST_INSERT_HEAD(&cf_head, cf, link);
+}
+
+char *
+crypt_r(const char *passwd, const char *salt, struct crypt_data *data)
+{
+	const struct crypt_format *cf;
+
+	SLIST_FOREACH(cf, &cf_head, link)
+		if (cf->magic != NULL && strstr(salt, cf->magic) == salt)
+			return (cf->func(passwd, salt, data));
+
+	cf = SLIST_FIRST(&cf_head);
+
+	return (cf->func(passwd, salt, data));
+}
-- 
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