r10561: This patch takes over KDC socket routines in Heimdal, and directs them

at the Samba4 socket layer.

The intention here is to ensure that other events may be processed while
heimdal is waiting on the KDC.  The interface is designed to be
sufficiently flexible, so that the plugin may choose how to time
communication with the KDC (ie multiple outstanding requests, looking
for a functional KDC).

I've hacked the socket layer out of cldap.c to handle this very
specific case of one udp packet and reply.  Likewise I also handle
TCP, stolen from the winbind code.

This same plugin system might also be useful for a self-contained
testing mode in Heimdal, in conjunction with libkdc.  I would suggest
using socket-wrapper instead however.

Andrew Bartlett
(This used to be commit 3b09f9e8f9f6f645cd03073ef833c8d0fb0d84e2)

1 files changed, 8 insertions, 0 deletions

diff --git a/source4/heimdal/lib/krb5/krb5.h b/source4/heimdal/lib/krb5/krb5.h
index 90b239cf0d..800683ef0c 100644
--- a/source4/heimdal/lib/krb5/krb5.h
+++ b/source4/heimdal/lib/krb5/krb5.h
@@ -444,6 +444,7 @@ typedef struct krb5_context_data {
     void *mutex;			/* protects error_string/error_buf */
     int large_msg_size;
     krb5_boolean fdns;                  /* Lookup hostnames to find full name, or send as-is */
+    struct send_and_recv *send_and_recv; /* Alternate functions for KDC communication */
 } krb5_context_data;
 
 enum {
@@ -744,6 +745,13 @@ enum {
     KRB5_KRBHST_FLAGS_LARGE_MSG	  = 2
 };
 
+typedef int (*krb5_send_and_recv_func_t)(krb5_context,
+					 void *,
+					 krb5_krbhst_info *,
+					 const krb5_data *,
+					 krb5_data *);
+typedef void (*krb5_send_and_recv_close_func_t)(krb5_context, void*);
+
 struct credentials; /* this is to keep the compiler happy */
 struct getargs;
 struct sockaddr;