Merge lorikeet-heimdal -r 787 into Samba4 tree.

Andrew Bartlett
(This used to be commit d88b530522d3cef67c24422bd5182fb875d87ee2)

1 files changed, 55 insertions, 2 deletions

diff --git a/source4/heimdal/lib/krb5/mcache.c b/source4/heimdal/lib/krb5/mcache.c
index ff9261a7db..01bcb09d3b 100644
--- a/source4/heimdal/lib/krb5/mcache.c
+++ b/source4/heimdal/lib/krb5/mcache.c
@@ -33,7 +33,7 @@
 
 #include "krb5_locl.h"
 
-RCSID("$Id: mcache.c 19834 2007-01-11 09:26:21Z lha $");
+RCSID("$Id: mcache.c 22107 2007-12-03 17:22:51Z lha $");
 
 typedef struct krb5_mcache {
     char *name;
@@ -401,6 +401,57 @@ mcc_end_cache_get(krb5_context context, krb5_cc_cursor cursor)
     return 0;
 }
 
+static krb5_error_code
+mcc_move(krb5_context context, krb5_ccache from, krb5_ccache to)
+{
+    krb5_mcache *mfrom = MCACHE(from), *mto = MCACHE(to);
+    struct link *creds;
+    krb5_principal principal;
+    krb5_mcache **n;
+
+    HEIMDAL_MUTEX_lock(&mcc_mutex);
+
+    /* drop the from cache from the linked list to avoid lookups */
+    for(n = &mcc_head; n && *n; n = &(*n)->next) {
+	if(mfrom == *n) {
+	    *n = mfrom->next;
+	    break;
+	}
+    }
+
+    /* swap creds */
+    creds = mto->creds;
+    mto->creds = mfrom->creds;
+    mfrom->creds = creds;
+    /* swap principal */
+    principal = mto->primary_principal;
+    mto->primary_principal = mfrom->primary_principal;
+    mfrom->primary_principal = principal;
+
+    HEIMDAL_MUTEX_unlock(&mcc_mutex);
+    mcc_destroy(context, from);
+
+    return 0;
+}
+
+static krb5_error_code
+mcc_default_name(krb5_context context, char **str)
+{
+    *str = strdup("MEMORY:");
+    if (*str == NULL) {
+	krb5_set_error_string(context, "out of memory");
+	return ENOMEM;
+    }
+    return 0;
+}
+
+
+/**
+ * Variable containing the MEMORY based credential cache implemention.
+ *
+ * @ingroup krb5_ccache
+ */
+
 const krb5_cc_ops krb5_mcc_ops = {
     "MEMORY",
     mcc_get_name,
@@ -420,5 +471,7 @@ const krb5_cc_ops krb5_mcc_ops = {
     NULL,
     mcc_get_cache_first,
     mcc_get_cache_next,
-    mcc_end_cache_get
+    mcc_end_cache_get,
+    mcc_move,
+    mcc_default_name
 };