Add gss_set_cred_option

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@17734 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/gssapi/krb5/set_cred_option.c

@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2004, PADL Software Pty Ltd.
+ * 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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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 "gsskrb5_locl.h"
+
+RCSID("$Id$");
+
+static gss_OID_desc gss_krb5_import_cred_x_oid_desc =
+{9, (void *)"\x2b\x06\x01\x04\x01\xa9\x4a\x13\x04"}; /* XXX */
+
+gss_OID GSS_KRB5_IMPORT_CRED_X = &gss_krb5_import_cred_x_oid_desc;
+
+static OM_uint32
+import_cred(OM_uint32 *minor_status,
+            gss_cred_id_t *cred_handle,
+            const gss_buffer_t value)
+{
+    OM_uint32 major_stat;
+    krb5_error_code ret;
+    krb5_principal keytab_principal = NULL;
+    krb5_keytab keytab = NULL;
+    krb5_storage *sp = NULL;
+    krb5_ccache id = NULL;
+    char *str;
+
+    if (cred_handle == NULL || *cred_handle != GSS_C_NO_CREDENTIAL) {
+	*minor_status = 0;
+	return GSS_S_FAILURE;
+    }
+
+    sp = krb5_storage_from_mem(value->value, value->length);
+    if (sp == NULL) {
+	*minor_status = 0;
+	return GSS_S_FAILURE;
+    }
+
+    /* credential cache name */
+    ret = krb5_ret_string(sp, &str);
+    if (ret) {
+	*minor_status = ret;
+	major_stat =  GSS_S_FAILURE;
+	goto out;
+    }
+    if (str[0]) {
+	ret = krb5_cc_resolve(_gsskrb5_context, str, &id);
+	if (ret) {
+	    *minor_status = ret;
+	    major_stat =  GSS_S_FAILURE;
+	    goto out;
+	}
+    }
+    free(str);
+    str = NULL;
+
+    /* keytab principal name */
+    ret = krb5_ret_string(sp, &str);
+    if (ret == 0 && str[0])
+	ret = krb5_parse_name(_gsskrb5_context, str, &keytab_principal);
+    if (ret) {
+	*minor_status = ret;
+	major_stat = GSS_S_FAILURE;
+	goto out;
+    }
+    free(str);
+    str = NULL;
+
+    /* keytab principal */
+    ret = krb5_ret_string(sp, &str);
+    if (ret) {
+	*minor_status = ret;
+	major_stat =  GSS_S_FAILURE;
+	goto out;
+    }
+    if (str[0]) {
+	ret = krb5_kt_resolve(_gsskrb5_context, str, &keytab);
+	if (ret) {
+	    *minor_status = ret;
+	    major_stat =  GSS_S_FAILURE;
+	    goto out;
+	}
+    }
+    free(str);
+    str = NULL;
+
+    major_stat = _gsskrb5_import_cred(minor_status, id, keytab_principal,
+				      keytab, cred_handle);
+
+out:
+    if (id)
+	krb5_cc_close(_gsskrb5_context, id);
+    if (keytab_principal)
+	krb5_free_principal(_gsskrb5_context, keytab_principal);
+    if (keytab)
+	krb5_kt_close(_gsskrb5_context, keytab);
+    if (str)
+	free(str);
+
+    return major_stat;
+}
+
+
+OM_uint32
+_gsskrb5_set_cred_option
+           (OM_uint32 *minor_status,
+            gss_cred_id_t *cred_handle,
+            const gss_OID desired_object,
+            const gss_buffer_t value)
+{
+    if (value == GSS_C_NO_BUFFER) {
+	*minor_status = EINVAL;
+	return GSS_S_FAILURE;
+    }
+
+    if (gss_oid_equal(desired_object, GSS_KRB5_IMPORT_CRED_X)) {
+	return import_cred(minor_status, cred_handle, value);
+    }
+
+    *minor_status = EINVAL;
+    return GSS_S_FAILURE;
+}