1 files changed, 141 insertions, 0 deletions
diff --git a/lib/libcrypt/crypt.c b/lib/libcrypt/crypt.c
new file mode 100644
index 0000000..b949a48
--- /dev/null
+++ b/lib/libcrypt/crypt.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 1999
+ *      Mark Murray.  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 MARK MURRAY 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 MARK MURRAY 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <string.h>
+#include <libutil.h>
+#include <unistd.h>
+#include "crypt.h"
+
+static const struct {
+	const char *const name;
+	char *(*const func)(const char *, const char *);
+	const char *const magic;
+} crypt_types[] = {
+#ifdef HAS_DES
+	{
+		"des",
+		crypt_des,
+		NULL
+	},
+#endif
+	{
+		"md5",
+		crypt_md5,
+		"$1$"
+	},
+#ifdef HAS_BLOWFISH
+	{
+		"blf",
+		crypt_blowfish,
+		"$2"
+	},
+#endif
+	{
+		"nth",
+		crypt_nthash,
+		"$3$"
+	},
+	{
+		"sha256",
+		crypt_sha256,
+		"$5$"
+	},
+	{
+		"sha512",
+		crypt_sha512,
+		"$6$"
+	},
+	{
+		NULL,
+		NULL,
+		NULL
+	}
+};
+
+static int crypt_type = -1;
+
+static void
+crypt_setdefault(void)
+{
+	char *def;
+	size_t i;
+
+	if (crypt_type != -1)
+		return;
+	def = auth_getval("crypt_default");
+	if (def == NULL) {
+		crypt_type = 0;
+		return;
+	}
+	for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
+		if (strcmp(def, crypt_types[i].name) == 0) {
+			crypt_type = (int)i;
+			return;
+		}
+	}
+	crypt_type = 0;
+}
+
+const char *
+crypt_get_format(void)
+{
+
+	crypt_setdefault();
+	return (crypt_types[crypt_type].name);
+}
+
+int
+crypt_set_format(const char *type)
+{
+	size_t i;
+
+	crypt_setdefault();
+	for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
+		if (strcmp(type, crypt_types[i].name) == 0) {
+			crypt_type = (int)i;
+			return (1);
+		}
+	}
+	return (0);
+}
+
+char *
+crypt(const char *passwd, const char *salt)
+{
+	size_t i;
+
+	crypt_setdefault();
+	for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
+		if (crypt_types[i].magic != NULL && strncmp(salt,
+		    crypt_types[i].magic, strlen(crypt_types[i].magic)) == 0)
+			return (crypt_types[i].func(passwd, salt));
+	}
+	return (crypt_types[crypt_type].func(passwd, salt));
+}