Add client keytab initiation support

Support acquiring GSSAPI krb5 credentials by fetching initial
credentials using the client keytab.  Credentials obtained this way
will be stored in the default ccache or collection, and will be
refreshed when they are halfway to expiring.

ticket: 7189 (new)

1 files changed, 80 insertions, 0 deletions

diff --git a/src/tests/gssapi/ccrefresh.c b/src/tests/gssapi/ccrefresh.c
new file mode 100644
index 000000000..bff299e46
--- /dev/null
+++ b/src/tests/gssapi/ccrefresh.c
@@ -0,0 +1,80 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* tests/gssapi/ccrefresh.c - Get or set refresh time on a ccache */
+/*
+ * Copyright (C) 2012 by the Massachusetts Institute of Technology.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * 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 THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT HOLDER 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.
+ */
+
+/*
+ * This program sets the refresh time of an existing ccache to 1, forcing a
+ * refresh.
+ */
+
+#include "k5-int.h"
+
+static void
+check(krb5_error_code code)
+{
+    if (code != 0) {
+        com_err("ccrefresh", code, NULL);
+        abort();
+    }
+}
+
+int
+main(int argc, char **argv)
+{
+    const char *ccname, *value = NULL;
+    krb5_context context;
+    krb5_ccache ccache;
+    krb5_data d;
+
+    if (argc != 2 && argc != 3) {
+        fprintf(stderr, "Usage: %s ccname [value]\n", argv[0]);
+        return 1;
+    }
+    ccname = argv[1];
+    if (argc == 3)
+        value = argv[2];
+
+    check(krb5_init_context(&context));
+    check(krb5_cc_resolve(context, ccname, &ccache));
+    if (value != NULL) {
+        d = string2data((char *)value);
+        check(krb5_cc_set_config(context, ccache, NULL, KRB5_CONF_REFRESH_TIME,
+                                 &d));
+    } else {
+        check(krb5_cc_get_config(context, ccache, NULL, KRB5_CONF_REFRESH_TIME,
+                                 &d));
+        printf("%.*s\n", (int)d.length, d.data);
+        krb5_free_data_contents(context, &d);
+    }
+    krb5_cc_close(context, ccache);
+    krb5_free_context(context);
+    return 0;
+}