1 files changed, 90 insertions, 0 deletions
diff --git a/source4/heimdal/lib/krb5/set_default_realm.c b/source4/heimdal/lib/krb5/set_default_realm.c
new file mode 100644
index 0000000000..965883309c
--- /dev/null
+++ b/source4/heimdal/lib/krb5/set_default_realm.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * 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. 
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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 "krb5_locl.h"
+
+RCSID("$Id: set_default_realm.c,v 1.14 2004/05/25 21:42:26 lha Exp $");
+
+/*
+ * Convert the simple string `s' into a NULL-terminated and freshly allocated 
+ * list in `list'.  Return an error code.
+ */
+
+static krb5_error_code
+string_to_list (krb5_context context, const char *s, krb5_realm **list)
+{
+
+    *list = malloc (2 * sizeof(**list));
+    if (*list == NULL) {
+	krb5_set_error_string (context, "malloc: out of memory");
+	return ENOMEM;
+    }
+    (*list)[0] = strdup (s);
+    if ((*list)[0] == NULL) {
+	free (*list);
+	krb5_set_error_string (context, "malloc: out of memory");
+	return ENOMEM;
+    }
+    (*list)[1] = NULL;
+    return 0;
+}
+
+/*
+ * Set the knowledge of the default realm(s) in `context'.
+ * If realm != NULL, that's the new default realm.
+ * Otherwise, the realm(s) are figured out from configuration or DNS.  
+ */
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_set_default_realm(krb5_context context,
+		       const char *realm)
+{
+    krb5_error_code ret = 0;
+    krb5_realm *realms = NULL;
+
+    if (realm == NULL) {
+	realms = krb5_config_get_strings (context, NULL,
+					  "libdefaults",
+					  "default_realm",
+					  NULL);
+	if (realms == NULL)
+	    ret = krb5_get_host_realm(context, NULL, &realms);
+    } else {
+	ret = string_to_list (context, realm, &realms);
+    }
+    if (ret)
+	return ret;
+    krb5_free_host_realm (context, context->default_realms);
+    context->default_realms = realms;
+    return 0;
+}