1 files changed, 162 insertions, 0 deletions
diff --git a/source4/smb_server/session.c b/source4/smb_server/session.c
new file mode 100644
index 0000000..321d7dd
--- /dev/null
+++ b/source4/smb_server/session.c
@@ -0,0 +1,162 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Password and authentication handling
+   Copyright (C) Andrew Tridgell 1992-2005
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
+   Copyright (C) Stefan Metzmacher 2005-2006
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "smb_server/smb_server.h"
+
+
+/*
+ * init the sessions structures
+ */
+NTSTATUS smbsrv_init_sessions(struct smbsrv_connection *smb_conn, uint64_t limit)
+{
+	/* 
+	 * the idr_* functions take 'int' as limit,
+	 * and only work with a max limit 0x00FFFFFF
+	 */
+	limit &= 0x00FFFFFF;
+
+	smb_conn->sessions.idtree_vuid	= idr_init(smb_conn);
+	NT_STATUS_HAVE_NO_MEMORY(smb_conn->sessions.idtree_vuid);
+	smb_conn->sessions.idtree_limit	= limit;
+	smb_conn->sessions.list		= NULL;
+
+	return NT_STATUS_OK;
+}
+
+/*
+ * Find the session structure associated with a VUID
+ * (not one from an in-progress session setup)
+ */
+struct smbsrv_session *smbsrv_session_find(struct smbsrv_connection *smb_conn,
+					   uint64_t vuid, struct timeval request_time)
+{
+	void *p;
+	struct smbsrv_session *sess;
+
+	if (vuid == 0) return NULL;
+
+	if (vuid > smb_conn->sessions.idtree_limit) return NULL;
+
+	p = idr_find(smb_conn->sessions.idtree_vuid, vuid);
+	if (!p) return NULL;
+
+	/* only return a finished session */
+	sess = talloc_get_type(p, struct smbsrv_session);
+	if (sess && sess->session_info) {
+		sess->statistics.last_request_time = request_time;
+		return sess;
+	}
+
+	return NULL;
+}
+
+/*
+ * Find the session structure associated with a VUID
+ * (associated with an in-progress session setup)
+ */
+struct smbsrv_session *smbsrv_session_find_sesssetup(struct smbsrv_connection *smb_conn, uint64_t vuid)
+{
+	void *p;
+	struct smbsrv_session *sess;
+
+	if (vuid == 0) return NULL;
+
+	if (vuid > smb_conn->sessions.idtree_limit) return NULL;
+
+	p = idr_find(smb_conn->sessions.idtree_vuid, vuid);
+	if (!p) return NULL;
+
+	sess = talloc_get_type_abort(p, struct smbsrv_session);
+
+	return sess;
+}
+
+/*
+ * the session will be marked as valid for usage
+ * by attaching a auth_session_info to the session.
+ *
+ * session_info will be talloc_stealed
+ */
+NTSTATUS smbsrv_session_sesssetup_finished(struct smbsrv_session *sess,
+				           struct auth_session_info *session_info)
+{
+	/* this check is to catch programmer errors */
+	if (!session_info) {
+		talloc_free(sess);
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	/* mark the session as successful authenticated */
+	sess->session_info = talloc_steal(sess, session_info);
+
+	/* now fill in some statistics */
+	sess->statistics.auth_time = timeval_current();
+
+	return NT_STATUS_OK;
+}
+
+/****************************************************************************
+destroy a session structure
+****************************************************************************/
+static int smbsrv_session_destructor(struct smbsrv_session *sess)
+{
+	struct smbsrv_connection *smb_conn = sess->smb_conn;
+
+	idr_remove(smb_conn->sessions.idtree_vuid, sess->vuid);
+	DLIST_REMOVE(smb_conn->sessions.list, sess);
+	return 0;
+}
+
+/*
+ * allocate a new session structure with a VUID.
+ * gensec_ctx is optional, but talloc_steal'ed when present
+ */
+struct smbsrv_session *smbsrv_session_new(struct smbsrv_connection *smb_conn,
+					  TALLOC_CTX *mem_ctx,
+					  struct gensec_security *gensec_ctx)
+{
+	struct smbsrv_session *sess = NULL;
+	int i;
+
+	sess = talloc_zero(mem_ctx, struct smbsrv_session);
+	if (!sess) return NULL;
+	sess->smb_conn = smb_conn;
+
+	i = idr_get_new_random(smb_conn->sessions.idtree_vuid, sess, smb_conn->sessions.idtree_limit);
+	if (i == -1) {
+		DEBUG(1,("ERROR! Out of connection structures\n"));
+		talloc_free(sess);
+		return NULL;
+	}
+	sess->vuid = i;
+
+	/* use this to keep tabs on all our info from the authentication */
+	sess->gensec_ctx = talloc_steal(sess, gensec_ctx);
+
+	DLIST_ADD(smb_conn->sessions.list, sess);
+	talloc_set_destructor(sess, smbsrv_session_destructor);
+
+	/* now fill in some statistics */
+	sess->statistics.connect_time = timeval_current();
+
+	return sess;
+}