From 1a0e03eb19998ab496a6ea845ff2c42d9a02df0b Mon Sep 17 00:00:00 2001
From: Karl Ramm <kcr@mit.edu>
Date: Tue, 25 Dec 2007 00:56:08 +0000
Subject: applied athena-update-branch patch

---
 lib/ZFmtAuth.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 69 insertions(+), 1 deletion(-)

(limited to 'lib/ZFmtAuth.c')

diff --git a/lib/ZFmtAuth.c b/lib/ZFmtAuth.c
index c2d8a00..97a70f2 100644
--- a/lib/ZFmtAuth.c
+++ b/lib/ZFmtAuth.c
@@ -16,7 +16,7 @@ static char rcsid_ZFormatAuthenticNotice_c[] = "$Id$";
 
 #include <internal.h>
 
-#ifdef HAVE_KRB4
+#if defined(HAVE_KRB4) || defined(HAVE_KRB5)
 Code_t ZFormatAuthenticNotice(notice, buffer, buffer_len, len, session)
     ZNotice_t *notice;
     register char *buffer;
@@ -62,3 +62,71 @@ Code_t ZFormatAuthenticNotice(notice, buffer, buffer_len, len, session)
     return (ZERR_NONE);
 }
 #endif
+
+#ifdef HAVE_KRB5
+Code_t ZFormatAuthenticNoticeV5(notice, buffer, buffer_len, len, keyblock)
+    ZNotice_t *notice;
+    register char *buffer;
+    register int buffer_len;
+    int *len;
+    krb5_keyblock *keyblock;
+{
+    ZNotice_t newnotice;
+    char *ptr;
+    int retval, hdrlen, hdr_adj;
+    krb5_enctype enctype;
+    krb5_cksumtype cksumtype;
+    int valid;
+    char *svcinst, *x, *y;
+    int key_len;
+    char *cksum_start, *cstart, *cend;
+    int cksum_len;
+    
+    key_len = Z_keylen(keyblock);
+    retval = Z_ExtractEncCksum(keyblock, &enctype, &cksumtype);
+    if (retval)
+         return (ZAUTH_FAILED);
+
+    if (key_len == 8 && (enctype == ENCTYPE_DES_CBC_CRC || 
+                         enctype == ENCTYPE_DES_CBC_MD4 ||
+                         enctype == ENCTYPE_DES_CBC_MD5)) {
+         C_Block tmp;
+         memcpy(&tmp, Z_keydata(keyblock), key_len);
+         return ZFormatAuthenticNotice(notice, buffer, buffer_len, len,
+                                       tmp);
+    }
+         
+    newnotice = *notice;
+    newnotice.z_auth = 1;
+    newnotice.z_authent_len = 0;
+    newnotice.z_ascii_authent = "";
+
+    if ((retval = Z_NewFormatRawHeader(&newnotice, buffer, buffer_len,
+                                       &hdrlen, 
+                                       &cksum_start, &cksum_len, &cstart, 
+                                       &cend)) != ZERR_NONE)
+	return (retval);
+     
+    retval = Z_InsertZcodeChecksum(keyblock, &newnotice, buffer, 
+                                   cksum_start, cksum_len, cstart, cend, 
+                                   buffer_len, &hdr_adj);
+     if (retval)
+          return retval;
+     
+     hdrlen += hdr_adj;
+     
+     ptr = buffer+hdrlen;
+
+     if (newnotice.z_message_len+hdrlen > buffer_len)
+          return (ZERR_PKTLEN);
+     
+     (void) memcpy(ptr, newnotice.z_message, newnotice.z_message_len);
+     
+     *len = hdrlen+newnotice.z_message_len;
+     
+     if (*len > Z_MAXPKTLEN)
+          return (ZERR_PKTLEN);
+     
+     return (ZERR_NONE);
+}
+#endif
-- 
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