ccbase.c patch to support multiple ccache types (was Re: How to prevent very very large ccaches?)

[Nicolas Williams]

Here's a preliminary patch which allows me to use FILE and STDIO.

I don't know what #ifdefs I might need to ensure ccbase.c patched as
follows will compile things link on MacOS and Windows... Comments?

Why wasn't this already in there??

Nico

Index: LOCAL-122.13/lib/krb5/ccache/ccbase.c
--- LOCAL-122.13/lib/krb5/ccache/ccbase.c Wed, 14 Mar 2001 14:20:32 -0500
+++ LOCAL-122.13(w)/lib/krb5/ccache/ccbase.c Wed, 19 Jun 2002 12:10:42 -0400
@@ -35,8 +35,10 @@
   struct krb5_cc_typelist *next;
  };
 extern krb5_cc_ops krb5_mcc_ops;
+extern krb5_cc_ops krb5_fcc_ops;
+extern krb5_cc_ops krb5_scc_ops;
 
-static struct krb5_cc_typelist cc_entry = { &krb5_mcc_ops, NULL };
+static struct krb5_cc_typelist cc_entry = { &krb5_mcc_ops, NULL};
 
 static struct krb5_cc_typelist *cc_typehead = &cc_entry;
 
@@ -89,6 +91,7 @@
     char *pfx, *cp;
     const char *resid;
     int pfxlen;
+    int tries = 1;
     
     cp = strchr (name, ':');
     if (!cp) {
@@ -110,6 +113,7 @@
 
     *cache = (krb5_ccache) 0;
 
+loop:
     for (tlist = cc_typehead; tlist; tlist = tlist->next) {
 	if (strcmp (tlist->ops->prefix, pfx) == 0) {
 	    free(pfx);
@@ -119,6 +123,13 @@
     if (krb5_cc_dfl_ops && !strcmp (pfx, krb5_cc_dfl_ops->prefix)) {
 	free (pfx);
 	return (*krb5_cc_dfl_ops->resolve)(context, cache, resid);
+    }
+    if (tries) {
+	krb5_cc_register(context, &krb5_mcc_ops, 0);
+	krb5_cc_register(context, &krb5_fcc_ops, 0);
+	krb5_cc_register(context, &krb5_scc_ops, 0);
+	tries--;
+	goto loop;
     }
     free(pfx);
     return KRB5_CC_UNKNOWN_TYPE;

On Wed, Jun 19, 2002 at 11:42:34AM -0400, Nicolas Williams wrote:
> Funny, I keep getting "Unknown credential cache type while getting
> default ccache" whenever I try KRB5CCNAME=STDIO:/path/to/ccache. But the
> stdio ccache is actually compiled in, it's in the library. Hmmm...
> 
> Nico
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