From d0726fafa92bdac37c44eaa46cd513e27aac1398 Mon Sep 17 00:00:00 2001
From: Johan Danielsson <joda@pdc.kth.se>
Date: Thu, 15 May 1997 18:28:18 +0000
Subject: [PATCH] First stab at a verify user.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@1717 ec53bebd-3082-4978-b11e-865c3cabbd6b
---
 lib/krb5/verify_user.c | 120 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 lib/krb5/verify_user.c

diff --git a/lib/krb5/verify_user.c b/lib/krb5/verify_user.c
new file mode 100644
index 000000000..c4b8799bd
--- /dev/null
+++ b/lib/krb5/verify_user.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 1995, 1996, 1997 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the Kungliga Tekniska
+ *      Högskolan and its contributors.
+ * 
+ * 4. 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("$Id$");
+
+int
+krb5_verify_user(krb5_context context, 
+		 krb5_principal principal,
+		 krb5_ccache ccache,
+		 const char *password,
+		 int secure,
+		 const char *service)
+{
+    krb5_error_code ret;
+    krb5_creds creds;
+    char *realm;
+    krb5_enctype *etypes;
+    
+    memset(&creds, 0, sizeof(creds));
+    ret = krb5_copy_principal(context, principal, &creds.client);
+    if(ret){
+	return ret;
+    }
+    ret = krb5_get_default_realm(context, &realm);
+    if(ret){
+	return ret;
+    }
+    ret = krb5_build_principal(context, &creds.server,
+			       strlen(realm),
+			       realm,
+			       "krbtgt",
+			       realm,
+			       NULL);
+    if(ret){
+	return ret;
+    }
+    
+    ret = krb5_get_in_tkt_with_password(context,
+					0,
+					NULL,
+					NULL,
+					NULL,
+					password, 
+					ccache,
+					&creds,
+					NULL);
+    if(ret)
+	return ret;
+    
+    if(secure){
+	krb5_auth_context auth_context = NULL;
+	krb5_data req;
+	
+	ret = krb5_mk_req(context, &auth_context, 
+			  0, 
+			  (char*)service, 
+			  NULL,
+			  NULL, 
+			  ccache,
+			  &req);
+	if(ret){
+	    /* */
+	    return ret;
+	}
+	krb5_auth_con_free(context, auth_context);
+	auth_context = NULL;
+		    
+	ret = krb5_rd_req(context, 
+			  &auth_context,
+			  &req,
+			  NULL,
+			  NULL,
+			  NULL,
+			  NULL);
+	
+	if(ret){
+	    /* */
+	    return ret;
+	}
+	krb5_free_data(context, &req);
+    }
+    return 0;
+}