1 files changed, 78 insertions, 0 deletions
diff --git a/lib/krb5/copy_host_realm.c b/lib/krb5/copy_host_realm.c
new file mode 100644
index 0000000..8c4f39b
--- /dev/null
+++ b/lib/krb5/copy_host_realm.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 1999 - 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: copy_host_realm.c 22057 2007-11-11 15:13:13Z lha $");
+
+/**
+ * Copy the list of realms from `from' to `to'.
+ *
+ * @param context Kerberos 5 context.
+ * @param from list of realms to copy from.
+ * @param to list of realms to copy to, free list of krb5_free_host_realm().
+ *
+ * @return Returns 0 to indicate success. Otherwise an kerberos et
+ * error code is returned, see krb5_get_error_message().
+ *
+ * @ingroup krb5
+ */
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_copy_host_realm(krb5_context context,
+		     const krb5_realm *from,
+		     krb5_realm **to)
+{
+    int n, i;
+    const krb5_realm *p;
+
+    for (n = 0, p = from; *p != NULL; ++p)
+	++n;
+    ++n;
+    *to = malloc (n * sizeof(**to));
+    if (*to == NULL) {
+	krb5_set_error_string (context, "malloc: out of memory");
+	return ENOMEM;
+    }
+    for (i = 0; i < n; ++i)
+	(*to)[i] = NULL;
+    for (i = 0, p = from; *p != NULL; ++p, ++i) {
+	(*to)[i] = strdup(*p);
+	if ((*to)[i] == NULL) {
+	    krb5_free_host_realm (context, *to);
+	    krb5_set_error_string (context, "malloc: out of memory");
+	    return ENOMEM;
+	}
+    }
+    return 0;
+}