* scc.h : Add another KRB5_SCC_FVNO but don't up the default.

        * scc_gennew.c, scc_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)
        * scc_read.c, scc_write.c : Remove krb5_enctype references, and
                replace with krb5_keytype where appropriate

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@6684 dc483132-0cff-0310-8789-dd5450dbe970

6 files changed, 49 insertions, 14 deletions

diff --git a/src/lib/krb5/ccache/stdio/ChangeLog b/src/lib/krb5/ccache/stdio/ChangeLog
index e49515f..9f797ce 100644
--- a/src/lib/krb5/ccache/stdio/ChangeLog
+++ b/src/lib/krb5/ccache/stdio/ChangeLog
@@ -1,4 +1,13 @@
 
+Tue Sep 05 22:58:52 1995
+
+        * scc.h : Add another KRB5_SCC_FVNO but don't up the default.
+        * scc_gennew.c, scc_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)
+        * scc_read.c, scc_write.c : Remove krb5_enctype references, and
+                replace with krb5_keytype where appropriate
+
 Tue Aug 29 13:36:39 EDT 1995	Paul Park	(pjpark@mit.edu)
 	* scc_reslv.c - Set magic number in successfully resolved ccache.
 
diff --git a/src/lib/krb5/ccache/stdio/scc.h b/src/lib/krb5/ccache/stdio/scc.h
index 6af8be9..6212adc 100644
--- a/src/lib/krb5/ccache/stdio/scc.h
+++ b/src/lib/krb5/ccache/stdio/scc.h
@@ -46,9 +46,10 @@
  * some overriding compatibility reasons not to do so.
  */
 
-#define KRB5_SCC_FVNO_1 0x0501		/* krb v5, scc v1 */
+#define KRB5_SCC_FVNO_1   0x0501	/* krb v5, scc v1 */
 #define KRB5_SCC_FVNO_2   0x0502	/* krb v5, scc v2 */
-#define KRB5_SCC_FVNO_3   0x0503	/* krb v5, scc v2 */
+#define KRB5_SCC_FVNO_3   0x0503	/* krb v5, scc v3 */
+#define KRB5_SCC_FVNO_4   0x0504	/* krb v5, scc v4 */
 
 #define KRB5_SCC_DEFAULT_FVNO KRB5_SCC_FVNO_3
 
diff --git a/src/lib/krb5/ccache/stdio/scc_gennew.c b/src/lib/krb5/ccache/stdio/scc_gennew.c
index 7e4e8db..1baf361 100644
--- a/src/lib/krb5/ccache/stdio/scc_gennew.c
+++ b/src/lib/krb5/ccache/stdio/scc_gennew.c
@@ -106,6 +106,16 @@ krb5_scc_generate_new (context, id)
 	     (void) remove(((krb5_scc_data *) lid->data)->filename);
 	     goto err_out;
 	 }
+ 	 /* For version 4 we save a length for the rest of the header */
+          if (KRB5_SCC_DEFAULT_FVNO == KRB5_SCC_FVNO_4) {
+	     unsigned char scc_flen[2] = { 0, 0 };
+	     if (!fwrite((char *)scc_flen, sizeof(scc_flen), 1, f)) {
+	        retcode = krb5_scc_interpret(context, errno);
+	        (void) fclose(f);
+	        (void) remove(((krb5_scc_data *) lid->data)->filename);
+                goto err_out;
+            }
+	 }
 	 if (fclose(f) == EOF) {
 	     retcode = krb5_scc_interpret(context, errno);
 	     (void) remove(((krb5_scc_data *) lid->data)->filename);
diff --git a/src/lib/krb5/ccache/stdio/scc_maybe.c b/src/lib/krb5/ccache/stdio/scc_maybe.c
index f6e008d..706b10b 100644
--- a/src/lib/krb5/ccache/stdio/scc_maybe.c
+++ b/src/lib/krb5/ccache/stdio/scc_maybe.c
@@ -164,12 +164,30 @@ krb5_scc_open_file (context, id, mode)
 	 data->version = (fvno_bytes[0] << 8) + fvno_bytes[1];
 	 if ((data->version != KRB5_SCC_FVNO_1) &&
 	     (data->version != KRB5_SCC_FVNO_2) &&
-	     (data->version != KRB5_SCC_FVNO_3)) {
+	     (data->version != KRB5_SCC_FVNO_3) &&
+	     (data->version != KRB5_SCC_FVNO_4)) {
 	     (void) krb5_unlock_file(context, fileno(f));
 	     (void) fclose(f);
 	     return KRB5_CCACHE_BADVNO;
 	 }
-     }
-     data->file = f;
-     return 0;
+	if (data->version == KRB5_SCC_FVNO_4) {
+	    char buf[1024];
+	    int len;
+
+	    if (!fread((char *)fvno_bytes, sizeof(fvno_bytes), 1, f)) {
+	     	(void) krb5_unlock_file(context, fileno(f));
+	     	(void) fclose(f);
+	     	return KRB5_CCACHE_BADVNO;
+	    }
+	    if (len = (fvno_bytes[0] << 8) + fvno_bytes[1]) {
+	    	if (!fread(buf, len, 1, f)) {
+	     	    (void) krb5_unlock_file(context, fileno(f));
+	     	    (void) fclose(f);
+	     	    return KRB5_CCACHE_BADVNO;
+		}
+	    }
+	}
+    }
+    data->file = f;
+    return 0;
 }
diff --git a/src/lib/krb5/ccache/stdio/scc_read.c b/src/lib/krb5/ccache/stdio/scc_read.c
index 88bf620..633e9e1 100644
--- a/src/lib/krb5/ccache/stdio/scc_read.c
+++ b/src/lib/krb5/ccache/stdio/scc_read.c
@@ -199,12 +199,10 @@ krb5_scc_read_keyblock(context, id, keyblock)
      kret = krb5_scc_read_ui_2(context, id, &ui2);
      keyblock->keytype = ui2;
      CHECK(kret);
-     if ((data->version == KRB5_SCC_FVNO_1) ||
-	 (data->version == KRB5_SCC_FVNO_2))
-	     keyblock->etype = ETYPE_UNKNOWN;
-     else {
+     if (data->version == KRB5_SCC_FVNO_3) {
+		/* This works because the old etype is the same as the new keytype. */
 	     kret = krb5_scc_read_ui_2(context, id, &ui2);
-	     keyblock->etype = ui2;
+	     keyblock->keytype = ui2;
 	     CHECK(kret);
      }
 
diff --git a/src/lib/krb5/ccache/stdio/scc_write.c b/src/lib/krb5/ccache/stdio/scc_write.c
index 9226bb1..4347b5e 100644
--- a/src/lib/krb5/ccache/stdio/scc_write.c
+++ b/src/lib/krb5/ccache/stdio/scc_write.c
@@ -150,9 +150,8 @@ krb5_scc_store_keyblock(context, id, keyblock)
 
      ret = krb5_scc_store_ui_2(context, id, keyblock->keytype);
      CHECK(ret);
-     if ((data->version != KRB5_SCC_FVNO_1) &&
-	 (data->version != KRB5_SCC_FVNO_2)) {
-	 ret = krb5_scc_store_ui_2(context, id, keyblock->etype);
+     if (data->version == KRB5_SCC_FVNO_3) {
+	 ret = krb5_scc_store_ui_2(context, id, keyblock->keytype);
 	 CHECK(ret);
      }
      ret = krb5_scc_store_int32(context, id, keyblock->length);