Initial import of KTH eBones. This has been cleaned up to only include

the "core" Kerberos functionality. The rest of the userland will get their
own changes later.

1 files changed, 119 insertions, 0 deletions

diff --git a/crypto/kerberosIV/lib/krb/decomp_ticket.c b/crypto/kerberosIV/lib/krb/decomp_ticket.c
new file mode 100644
index 0000000..8e556a3
--- /dev/null
+++ b/crypto/kerberosIV/lib/krb/decomp_ticket.c
@@ -0,0 +1,119 @@
+/*
+ * 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 "krb_locl.h"
+
+RCSID("$Id: decomp_ticket.c,v 1.16 1997/04/01 08:18:22 joda Exp $");
+
+/*
+ * This routine takes a ticket and pointers to the variables that
+ * should be filled in based on the information in the ticket.  It
+ * fills in values for its arguments.
+ *
+ * The routine returns KFAILURE if any of the "pname", "pinstance",
+ * or "prealm" fields is too big, otherwise it returns KSUCCESS.
+ *
+ * The corresponding routine to generate tickets is create_ticket.
+ * When changes are made to this routine, the corresponding changes
+ * should also be made to that file.
+ *
+ * See create_ticket.c for the format of the ticket packet.
+ */
+
+int
+decomp_ticket(KTEXT tkt,	/* The ticket to be decoded */
+	      unsigned char *flags, /* Kerberos ticket flags */
+	      char *pname,	/* Authentication name */
+	      char *pinstance,	/* Principal's instance */
+	      char *prealm,	/* Principal's authentication domain */
+	      u_int32_t *paddress,/* Net address of entity requesting ticket */
+	      unsigned char *session, /* Session key inserted in ticket */
+	      int *life,	/* Lifetime of the ticket */
+	      u_int32_t *time_sec, /* Issue time and date */
+	      char *sname,	/* Service name */
+	      char *sinstance,	/* Service instance */
+	      des_cblock *key,	/* Service's secret key (to decrypt the ticket) */
+	      des_key_schedule schedule) /* The precomputed key schedule */
+
+{
+    unsigned char *p = tkt->dat;
+    
+    int little_endian;
+
+    des_pcbc_encrypt((des_cblock *)tkt->dat, (des_cblock *)tkt->dat,
+		     tkt->length, schedule, key, DES_DECRYPT);
+
+    tkt->mbz = 0;
+
+    *flags = *p++;
+
+    little_endian = (*flags >> K_FLAG_ORDER) & 1;
+
+    if(strlen((char*)p) > ANAME_SZ)
+	return KFAILURE;
+    p += krb_get_string(p, pname);
+
+    if(strlen((char*)p) > INST_SZ)
+	return KFAILURE;
+    p += krb_get_string(p, pinstance);
+
+    if(strlen((char*)p) > REALM_SZ)
+	return KFAILURE;
+    p += krb_get_string(p, prealm);
+
+    if(tkt->length - (p - tkt->dat) < 8 + 1 + 4)
+	return KFAILURE;
+    p += krb_get_address(p, paddress);
+
+    memcpy(session, p, 8);
+    p += 8;
+
+    *life = *p++;
+    
+    p += krb_get_int(p, time_sec, 4, little_endian);
+
+    if(strlen((char*)p) > SNAME_SZ)
+	return KFAILURE;
+    p += krb_get_string(p, sname);
+
+    if(strlen((char*)p) > INST_SZ)
+	return KFAILURE;
+    p += krb_get_string(p, sinstance);
+
+    return KSUCCESS;
+}