r1294: A nice, large, commit...

This implements gensec for Samba's server side, and brings gensec up
to the standards of a full subsystem.

This means that use of the subsystem is by gensec_* functions, not
function pointers in structures (this is internal).  This causes
changes in all the existing gensec users.

Our RPC server no longer contains it's own generalised security
scheme, and now calls gensec directly.

Gensec has also taken over the role of auth/auth_ntlmssp.c

An important part of gensec, is the output of the 'session_info'
struct.  This is now reference counted, so that we can correctly free
it when a pipe is closed, no matter if it was inherited, or created by
per-pipe authentication.

The schannel code is reworked, to be in the same file for client and
server.

ntlm_auth is reworked to use gensec.

The major problem with this code is the way it relies on subsystem
auto-initialisation.  The primary reason for this commit now.is to
allow these problems to be looked at, and fixed.

There are problems with the new code:
- I've tested it with smbtorture, but currently don't have VMware and
  valgrind working (this I'll fix soon).
- The SPNEGO code is client-only at this point.
- We still do not do kerberos.

Andrew Bartlett
(This used to be commit 07fd885fd488fd1051eacc905a2d4962f8a018ec)

1 files changed, 30 insertions, 9 deletions

diff --git a/source4/libcli/auth/gensec.h b/source4/libcli/auth/gensec.h
index 2a469e0f57..463b484a7f 100644
--- a/source4/libcli/auth/gensec.h
+++ b/source4/libcli/auth/gensec.h
@@ -27,6 +27,7 @@ struct gensec_user {
 	const char *domain;
 	const char *name;
 	const char *password;
+	char schan_session_key[16];
 };
 /* GENSEC mode */
 enum gensec_role
@@ -38,27 +39,47 @@ enum gensec_role
 struct gensec_security_ops {
 	const char *name;
 	const char *sasl_name;
-	uint8 auth_type;
+	uint8 auth_type;  /* 0 if not offered on DCE-RPC */
 	const char *oid;  /* NULL if not offered by SPENGO */
 	NTSTATUS (*client_start)(struct gensec_security *gensec_security);
 	NTSTATUS (*server_start)(struct gensec_security *gensec_security);
 	NTSTATUS (*update)(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx,
 			   const DATA_BLOB in, DATA_BLOB *out);
-	NTSTATUS (*seal)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
+	NTSTATUS (*seal_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
 				uint8_t *data, size_t length, DATA_BLOB *sig);
-	NTSTATUS (*sign)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
+	NTSTATUS (*sign_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
 				const uint8_t *data, size_t length, DATA_BLOB *sig);
-	NTSTATUS (*check_sig)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx, 
-				const uint8_t *data, size_t length, const DATA_BLOB *sig);
-	NTSTATUS (*unseal)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
-				uint8_t *data, size_t length, DATA_BLOB *sig);
+	NTSTATUS (*check_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx, 
+				 const uint8_t *data, size_t length, const DATA_BLOB *sig);
+	NTSTATUS (*unseal_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
+				  uint8_t *data, size_t length, DATA_BLOB *sig);
 	NTSTATUS (*session_key)(struct gensec_security *gensec_security, DATA_BLOB *session_key);
+	NTSTATUS (*session_info)(struct gensec_security *gensec_security, 
+				 struct auth_session_info **session_info); 
 	void (*end)(struct gensec_security *gensec_security);
 };
 	
+typedef NTSTATUS (*gensec_password_callback)(struct gensec_security *gensec_security, TALLOC_CTX *mem_ctx, 
+					     char **password);
+
+#define GENSEC_INTERFACE_VERSION 0
+
 struct gensec_security {
-	struct gensec_user user;
-	void *private_data;
+	TALLOC_CTX *mem_ctx;
+	gensec_password_callback password_callback;
+	void *password_callback_private;
 	const struct gensec_security_ops *ops;
+	void *private_data;
+	struct gensec_user user;
+	enum gensec_role gensec_role;
 };
 
+/* this structure is used by backends to determine the size of some critical types */
+struct gensec_critical_sizes {
+	int interface_version;
+	int sizeof_gensec_security_ops;
+	int sizeof_gensec_security;
+};
+
+
+