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-rw-r--r--source4/smb_server/smb/sesssetup.c97
1 files changed, 51 insertions, 46 deletions
diff --git a/source4/smb_server/smb/sesssetup.c b/source4/smb_server/smb/sesssetup.c
index 3f09346243..2532a2f78f 100644
--- a/source4/smb_server/smb/sesssetup.c
+++ b/source4/smb_server/smb/sesssetup.c
@@ -246,10 +246,11 @@ static NTSTATUS sesssetup_nt1(struct smbsrv_request *req, union smb_sesssetup *s
*/
static NTSTATUS sesssetup_spnego(struct smbsrv_request *req, union smb_sesssetup *sess)
{
- NTSTATUS status = NT_STATUS_ACCESS_DENIED;
- struct smbsrv_session *smb_sess;
- struct gensec_security *gensec_ctx;
+ NTSTATUS status;
+ NTSTATUS skey_status;
+ struct smbsrv_session *smb_sess = NULL;
struct auth_session_info *session_info = NULL;
+ DATA_BLOB session_key;
uint16_t vuid;
sess->spnego.out.vuid = 0;
@@ -266,10 +267,12 @@ static NTSTATUS sesssetup_spnego(struct smbsrv_request *req, union smb_sesssetup
}
vuid = SVAL(req->in.hdr,HDR_UID);
+
+ /* lookup an existing session */
smb_sess = smbsrv_session_find_sesssetup(req->smb_conn, vuid);
- if (smb_sess) {
- gensec_ctx = smb_sess->gensec_ctx;
- } else {
+ if (!smb_sess) {
+ struct gensec_security *gensec_ctx;
+
status = gensec_server_start(req, &gensec_ctx,
req->smb_conn->connection->event.ctx);
if (!NT_STATUS_IS_OK(status)) {
@@ -289,55 +292,57 @@ static NTSTATUS sesssetup_spnego(struct smbsrv_request *req, union smb_sesssetup
return status;
}
+ /* allocate a new session */
smb_sess = smbsrv_session_new(req->smb_conn, gensec_ctx);
- if (!smb_sess) {
- return NT_STATUS_ACCESS_DENIED;
- }
}
- status = gensec_update(gensec_ctx, req, sess->spnego.in.secblob, &sess->spnego.out.secblob);
- if (NT_STATUS_IS_OK(status)) {
- DATA_BLOB session_key;
-
- status = gensec_session_info(gensec_ctx, &session_info);
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(smb_sess);
- return status;
- }
-
- status = gensec_session_key(gensec_ctx,
- &session_key);
-/* TODO: what if getting the session key failed? */
- if (NT_STATUS_IS_OK(status)
- && session_info->server_info->authenticated
- && srv_setup_signing(req->smb_conn, &session_key, NULL)) {
- /* Force check of the request packet, now we know the session key */
- req_signing_check_incoming(req);
-
- srv_signing_restart(req->smb_conn, &session_key, NULL);
- }
+ if (!smb_sess) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
- } else if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- } else {
- status = auth_nt_status_squash(status);
-
- /* This invalidates the VUID of the failed login */
- talloc_free(smb_sess);
+ if (!smb_sess->gensec_ctx) {
+ status = NT_STATUS_INTERNAL_ERROR;
+ DEBUG(1, ("Internal ERROR: no gensec_ctx on session: %s\n", nt_errstr(status)));
+ goto failed;
+ }
+
+ status = gensec_update(smb_sess->gensec_ctx, req, sess->spnego.in.secblob, &sess->spnego.out.secblob);
+ if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ sess->spnego.out.vuid = smb_sess->vuid;
return status;
+ } else if (!NT_STATUS_IS_OK(status)) {
+ goto failed;
}
-
- if (NT_STATUS_IS_OK(status)) {
- /* Ensure this is marked as a 'real' vuid, not one
- * simply valid for the session setup leg */
- status = smbsrv_session_sesssetup_finished(smb_sess, session_info);
- if (!NT_STATUS_IS_OK(status)) {
- return auth_nt_status_squash(status);
- }
- req->session = smb_sess;
+
+ status = gensec_session_info(smb_sess->gensec_ctx, &session_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto failed;
+ }
+
+ skey_status = gensec_session_key(smb_sess->gensec_ctx, &session_key);
+ if (NT_STATUS_IS_OK(skey_status) &&
+ session_info->server_info->authenticated &&
+ srv_setup_signing(req->smb_conn, &session_key, NULL)) {
+ /* Force check of the request packet, now we know the session key */
+ req_signing_check_incoming(req);
+
+ srv_signing_restart(req->smb_conn, &session_key, NULL);
+ }
+
+ /* Ensure this is marked as a 'real' vuid, not one
+ * simply valid for the session setup leg */
+ status = smbsrv_session_sesssetup_finished(smb_sess, session_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto failed;
}
+ req->session = smb_sess;
+
sess->spnego.out.vuid = smb_sess->vuid;
+ return NT_STATUS_OK;
- return status;
+failed:
+ talloc_free(smb_sess);
+ return auth_nt_status_squash(status);
}
/*