1 files changed, 83 insertions, 0 deletions
diff --git a/src/lib/krb5/krb/pr_to_salt.c b/src/lib/krb5/krb/pr_to_salt.c
new file mode 100644
index 000000000000..00d0c734f9e0
--- /dev/null
+++ b/src/lib/krb5/krb/pr_to_salt.c
@@ -0,0 +1,83 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* lib/krb5/krb/pr_to_salt.c */
+/*
+ * Copyright 1990 by the Massachusetts Institute of Technology.
+ * All Rights Reserved.
+ *
+ * Export of this software from the United States of America may
+ *   require a specific license from the United States Government.
+ *   It is the responsibility of any person or organization contemplating
+ *   export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#include "k5-int.h"
+
+static krb5_error_code
+principal2salt_internal(krb5_context, krb5_const_principal,
+                        krb5_data *ret, int);
+
+/*
+ * Convert a krb5_principal into the default salt for that principal.
+ */
+static krb5_error_code
+principal2salt_internal(krb5_context context,
+                        register krb5_const_principal pr,
+                        krb5_data *ret, int use_realm)
+{
+    unsigned int size = 0, offset=0;
+    krb5_int32 i;
+
+    *ret = empty_data();
+    if (pr == NULL)
+        return 0;
+
+    if (use_realm)
+        size += pr->realm.length;
+
+    for (i = 0; i < pr->length; i++)
+        size += pr->data[i].length;
+
+    if (alloc_data(ret, size))
+        return ENOMEM;
+
+    if (use_realm) {
+        offset = pr->realm.length;
+        if (offset > 0)
+            memcpy(ret->data, pr->realm.data, offset);
+    }
+
+    for (i = 0; i < pr->length; i++) {
+        if (pr->data[i].length > 0)
+            memcpy(&ret->data[offset], pr->data[i].data, pr->data[i].length);
+        offset += pr->data[i].length;
+    }
+    return 0;
+}
+
+krb5_error_code
+krb5_principal2salt(krb5_context context,
+                    register krb5_const_principal pr, krb5_data *ret)
+{
+    return principal2salt_internal(context, pr, ret, 1);
+}
+
+krb5_error_code
+krb5_principal2salt_norealm(krb5_context context,
+                            register krb5_const_principal pr, krb5_data *ret)
+{
+    return principal2salt_internal(context, pr, ret, 0);
+}