check for compatiblity with other heimdal's 3des get_mic/verify_mic

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@11616 ec53bebd-3082-4978-b11e-865c3cabbd6b
2003-01-27 14:02:26 +00:00
parent 2185a5f683
commit 73330ee3e2
2 changed files with 180 additions and 0 deletions
--- a/lib/gssapi/krb5/compat.c
+++ b/lib/gssapi/krb5/compat.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2003 Kungliga Tekniska H<>gskolan
+ * (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 "gssapi_locl.h"
+
+RCSID("$Id$");
+
+
+static krb5_error_code
+check_compat(OM_uint32 *minor_status, gss_name_t name, 
+	     const char *option, krb5_boolean *compat)
+{
+    krb5_error_code ret;
+    char **p, **q;
+    krb5_principal match;
+
+
+    p = krb5_config_get_strings(gssapi_krb5_context, NULL, "gssapi",
+				option, NULL);
+    if(p == NULL)
+	return 0;
+
+    for(q = p; *q; q++) {
+
+	ret = krb5_parse_name(gssapi_krb5_context, *q, &match);
+	if (ret)
+	    break;
+
+	if (krb5_principal_match(gssapi_krb5_context, name, match)) {
+	    *compat = TRUE;
+	    break;
+	}
+	
+	krb5_free_principal(gssapi_krb5_context, match);
+    }
+    krb5_config_free_strings(p);
+
+    if (ret) {
+	*minor_status = ret;
+	return GSS_S_FAILURE;
+    }
+
+    return 0;
+}
+
+OM_uint32
+_gss_DES3_get_mic_compat(OM_uint32 *minor_status, gss_ctx_id_t ctx)
+{
+    krb5_boolean use_compat = FALSE;
+    OM_uint32 ret;
+
+    ret = check_compat(minor_status, ctx->target, 
+		       "broken_3des_mic", &use_compat);
+    if (ret)
+	return ret;
+    if (use_compat)
+	ctx->more_flags |= COMPAT_OLD_DES3;
+
+    return 0;
+}