* fcc.h : Add another KRB5_FCC_FVNO but don't up the default.

	* fcc_gennew.c, fcc_maybe.c : New version saves a length after
		version for whatever we want to put into the ccache before
		the first credential (like a time skew)
        * fcc_read.c, fcc_write.c : Remove krb5_enctype references, and
		replace with krb5_keytype where appropriate

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@6683 dc483132-0cff-0310-8789-dd5450dbe970

6 files changed, 51 insertions, 13 deletions

diff --git a/src/lib/krb5/ccache/file/ChangeLog b/src/lib/krb5/ccache/file/ChangeLog
index 4ec1d6eaba..ae7a1221f6 100644
--- a/src/lib/krb5/ccache/file/ChangeLog
+++ b/src/lib/krb5/ccache/file/ChangeLog
@@ -1,4 +1,13 @@
 
+Tue Sep 05 22:58:52 1995
+
+	* fcc.h : Add another KRB5_FCC_FVNO but don't up the default.
+	* fcc_gennew.c, fcc_maybe.c : New version saves a length after 
+		version for whatever we want to put into the ccache before 
+		the first credential (like a time skew)
+        * fcc_read.c, fcc_write.c : Remove krb5_enctype references, and 
+		replace with krb5_keytype where appropriate
+
 Tue Aug 29 13:36:00 EDT 1995	Paul Park	(pjpark@mit.edu)
 	* fcc_reslv.c - Set magic number in successfully resolved ccache.
 
diff --git a/src/lib/krb5/ccache/file/fcc.h b/src/lib/krb5/ccache/file/fcc.h
index 980a9c17e3..0e26fa7f69 100644
--- a/src/lib/krb5/ccache/file/fcc.h
+++ b/src/lib/krb5/ccache/file/fcc.h
@@ -55,6 +55,7 @@
 #define KRB5_FCC_FVNO_1 0x0501		/* krb5 v5, fcc v1 */
 #define KRB5_FCC_FVNO_2 0x0502		/* krb5 v5, fcc v2 */
 #define KRB5_FCC_FVNO_3 0x0503		/* krb5 v5, fcc v3 */
+#define KRB5_FCC_FVNO_4 0x0504		/* krb5 v5, fcc v4 */
 
 #define KRB5_FCC_DEFAULT_FVNO KRB5_FCC_FVNO_3
 
diff --git a/src/lib/krb5/ccache/file/fcc_gennew.c b/src/lib/krb5/ccache/file/fcc_gennew.c
index 13757e9d51..93d963b150 100644
--- a/src/lib/krb5/ccache/file/fcc_gennew.c
+++ b/src/lib/krb5/ccache/file/fcc_gennew.c
@@ -107,6 +107,7 @@ krb5_fcc_generate_new (context, id)
           goto err_out;
      } else {
 	  krb5_int16 fcc_fvno = htons(KRB5_FCC_DEFAULT_FVNO);
+	  krb5_int16 fcc_flen = 0;
 	  int errsave, cnt;
 
 	  /* Ignore user's umask, set mode = 0600 */
@@ -125,6 +126,17 @@ krb5_fcc_generate_new (context, id)
 	      retcode = (cnt == -1) ? krb5_fcc_interpret(context, errsave) : KRB5_CC_IO;
               goto err_out;
 	  }
+	  /* For version 4 we save a length for the rest of the header */
+	  if (KRB5_FCC_DEFAULT_FVNO == KRB5_FCC_FVNO_4) {
+	    if ((cnt = write(ret, (char *)&fcc_flen, sizeof(fcc_flen)))
+	        != sizeof(fcc_flen)) {
+	        errsave = errno;
+	        (void) close(ret);
+	        (void) unlink(((krb5_fcc_data *) lid->data)->filename);
+	        retcode = (cnt == -1) ? krb5_fcc_interpret(context, errsave) : KRB5_CC_IO;
+                goto err_out;
+	    }
+	  }
 	  if (close(ret) == -1) {
 	      errsave = errno;
 	      (void) unlink(((krb5_fcc_data *) lid->data)->filename);
diff --git a/src/lib/krb5/ccache/file/fcc_maybe.c b/src/lib/krb5/ccache/file/fcc_maybe.c
index 232bb22754..9aaba98fb7 100644
--- a/src/lib/krb5/ccache/file/fcc_maybe.c
+++ b/src/lib/krb5/ccache/file/fcc_maybe.c
@@ -267,15 +267,35 @@ krb5_fcc_open_file (context, id, mode)
 	     (void) close(fd);
 	     return KRB5_CCACHE_BADVNO;
 	 }
-	 if ((fcc_fvno != htons(KRB5_FCC_FVNO_3)) &&
+	 if ((fcc_fvno != htons(KRB5_FCC_FVNO_4)) &&
+	     (fcc_fvno != htons(KRB5_FCC_FVNO_3)) &&
 	     (fcc_fvno != htons(KRB5_FCC_FVNO_2)) &&
 	     (fcc_fvno != htons(KRB5_FCC_FVNO_1))) {
 	     (void) fcc_lock_file(data, fd, UNLOCK_IT);
 	     (void) close(fd);
 	     return KRB5_CCACHE_BADVNO;
 	 }
-	 data->version = ntohs(fcc_fvno);
-     }
-     data->fd = fd;
-     return 0;
+	if (fcc_fvno == htons(KRB5_FCC_FVNO_4)) {
+     	    krb5_ui_2 fcc_flen;
+	    char buf[1024];
+	    
+	    if (read(fd, (char *)&fcc_flen, sizeof(fcc_flen)) 
+		!= sizeof(fcc_flen)) {
+		     (void) fcc_lock_file(data, fd, UNLOCK_IT);
+		     (void) close(fd);
+		     return KRB5_CCACHE_BADVNO;
+	    }
+	    /* Skip past the header info for now */
+	    if (fcc_flen = htons(fcc_flen)) {
+	        if (read(fd, buf, fcc_flen) != fcc_flen) {
+		     (void) fcc_lock_file(data, fd, UNLOCK_IT);
+		     (void) close(fd);
+		     return KRB5_CCACHE_BADVNO;
+		}
+	    }
+	}
+	data->version = ntohs(fcc_fvno);
+    }
+    data->fd = fd;
+    return 0;
 }
diff --git a/src/lib/krb5/ccache/file/fcc_read.c b/src/lib/krb5/ccache/file/fcc_read.c
index e963d9eb71..fddff7aef4 100644
--- a/src/lib/krb5/ccache/file/fcc_read.c
+++ b/src/lib/krb5/ccache/file/fcc_read.c
@@ -206,12 +206,9 @@ krb5_fcc_read_keyblock(context, id, keyblock)
      kret = krb5_fcc_read_ui_2(context, id, &ui2);
      keyblock->keytype = ui2;
      CHECK(kret);
-     if ((data->version == KRB5_FCC_FVNO_1) ||
-	 (data->version == KRB5_FCC_FVNO_2))
-	     keyblock->etype = ETYPE_UNKNOWN;
-     else {
+     if (data->version == KRB5_FCC_FVNO_3) {
 	     kret = krb5_fcc_read_ui_2(context, id, &ui2);
-	     keyblock->etype = ui2;
+	     keyblock->keytype = ui2;
 	     CHECK(kret);
      }
 
diff --git a/src/lib/krb5/ccache/file/fcc_write.c b/src/lib/krb5/ccache/file/fcc_write.c
index 38067b5f50..2c52aaf6ca 100644
--- a/src/lib/krb5/ccache/file/fcc_write.c
+++ b/src/lib/krb5/ccache/file/fcc_write.c
@@ -149,9 +149,8 @@ krb5_fcc_store_keyblock(context, id, keyblock)
 
      ret = krb5_fcc_store_ui_2(context, id, keyblock->keytype);
      CHECK(ret);
-     if ((data->version != KRB5_FCC_FVNO_1) &&
-	 (data->version != KRB5_FCC_FVNO_2)) {
-	 ret = krb5_fcc_store_ui_2(context, id, keyblock->etype);
+     if (data->version == KRB5_FCC_FVNO_3) {
+	 ret = krb5_fcc_store_ui_2(context, id, keyblock->keytype);
 	 CHECK(ret);
      }
      ret = krb5_fcc_store_int32(context, id, keyblock->length);