1 files changed, 68 insertions, 0 deletions
diff --git a/sysdeps/generic/crypt-entry.c b/sysdeps/generic/crypt-entry.c
new file mode 100644
index 0000000000..84c6974697
--- /dev/null
+++ b/sysdeps/generic/crypt-entry.c
@@ -0,0 +1,68 @@
+/* crypt - wrapper aroung MD5 sum replacement for crypt function.
+Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include <crypt.h>
+#include <errno.h>
+#include <string.h>
+
+
+/* Define our magic string to mark salt for MD5 encryption
+   replacement.  This is meant to be the same as for other MD5 based
+   encryption implenentations.  */
+static const char md5_salt_prefix[] = "$1$";
+
+
+/* Prototypes for the MD5 encryption replacement functions.  */
+extern char *md5_crypt_r (const char *key, const char *salt, char *buffer,
+			  int buflen);
+extern char *md5_crpyt (const char *key, const char *salt);
+
+
+/* We recognize an intended call of the MD5 crypt replacement function
+   by the first 3 characters of the salt string.  If they match the
+   MD5 magic string we want MD5 encryption replacement.  */
+char *
+crypt_r (key, salt, data)
+     const char *key;
+     const char *salt;
+     struct crypt_data *data;
+{
+  if (strncmp (md5_salt_prefix, salt, sizeof (md5_salt_prefix) - 1) == 0)
+    return md5_crypt_r (key, salt, (char *) data, sizeof (struct crypt_data));
+
+  /* We don't have DES encryption.  */
+  errno = ENOSYS;
+  return NULL;
+}
+
+
+/* The same here, only we call the non-reentrant version.  */
+char *
+crypt (key, salt)
+     const char *key;
+     const char *salt;
+{
+  if (strncmp (md5_salt_prefix, salt, sizeof (md5_salt_prefix) - 1) == 0)
+    return md5_crypt (key, salt);
+
+  /* We don't have DES encryption.  */
+  errno = ENOSYS;
+  return NULL;
+}