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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-#include "auth/credentials/credentials.h"
+#include <tevent.h>
#include "auth/gensec/gensec.h"
#include "auth/auth.h"
#include "libcli/smb2/smb2.h"
#include "libcli/smb2/smb2_calls.h"
#include "smb_server/smb_server.h"
-#include "smb_server/service_smb_proto.h"
#include "smb_server/smb2/smb2_server.h"
#include "smbd/service_stream.h"
+#include "lib/stream/packet.h"
static void smb2srv_sesssetup_send(struct smb2srv_request *req, union smb_sesssetup *io)
{
- uint16_t unknown1;
-
if (NT_STATUS_IS_OK(req->status)) {
- unknown1 = 0x0003;
+ /* nothing */
} else if (NT_STATUS_EQUAL(req->status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- unknown1 = 0x0002;
+ /* nothing */
} else {
smb2srv_send_error(req, req->status);
return;
}
- SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x08, True, io->smb2.out.secblob.length));
+ SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x08, true, io->smb2.out.secblob.length));
- SSVAL(req->out.hdr, SMB2_HDR_UNKNOWN1, unknown1);
- SBVAL(req->out.hdr, SMB2_HDR_UID, io->smb2.out.uid);
+ SBVAL(req->out.hdr, SMB2_HDR_SESSION_ID, io->smb2.out.uid);
- SSVAL(req->out.body, 0x02, io->smb2.out._pad);
+ SSVAL(req->out.body, 0x02, io->smb2.out.session_flags);
SMB2SRV_CHECK(smb2_push_o16s16_blob(&req->out, 0x04, io->smb2.out.secblob));
smb2srv_send_reply(req);
struct smbsrv_session *smb_sess;
};
-static void smb2srv_sesssetup_callback(struct gensec_update_request *greq, void *private_data)
+static void smb2srv_sesssetup_callback(struct tevent_req *subreq)
{
- struct smb2srv_sesssetup_callback_ctx *ctx = talloc_get_type(private_data,
+ struct smb2srv_sesssetup_callback_ctx *ctx = tevent_req_callback_data(subreq,
struct smb2srv_sesssetup_callback_ctx);
struct smb2srv_request *req = ctx->req;
union smb_sesssetup *io = ctx->io;
struct smbsrv_session *smb_sess = ctx->smb_sess;
struct auth_session_info *session_info = NULL;
+ enum security_user_level user_level;
NTSTATUS status;
- status = gensec_update_recv(greq, req, &io->smb2.out.secblob);
+ packet_recv_enable(req->smb_conn->packet);
+
+ status = gensec_update_recv(subreq, req, &io->smb2.out.secblob);
+ TALLOC_FREE(subreq);
if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
goto done;
} else if (!NT_STATUS_IS_OK(status)) {
goto failed;
}
- status = gensec_session_info(smb_sess->gensec_ctx, &session_info);
+ status = gensec_session_info(smb_sess->gensec_ctx, smb_sess, &session_info);
if (!NT_STATUS_IS_OK(status)) {
goto failed;
}
}
req->session = smb_sess;
+ user_level = security_session_user_level(smb_sess->session_info, NULL);
+ if (user_level >= SECURITY_USER) {
+ if (smb_sess->smb2_signing.required) {
+ /* activate smb2 signing on the session */
+ smb_sess->smb2_signing.active = true;
+ }
+ /* we need to sign the session setup response */
+ req->is_signed = true;
+ }
+
done:
io->smb2.out.uid = smb_sess->vuid;
failed:
- req->status = auth_nt_status_squash(status);
+ req->status = nt_status_squash(status);
smb2srv_sesssetup_send(req, io);
+ if (!NT_STATUS_IS_OK(status) && !
+ NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ talloc_free(smb_sess);
+ }
}
static void smb2srv_sesssetup_backend(struct smb2srv_request *req, union smb_sesssetup *io)
struct smb2srv_sesssetup_callback_ctx *callback_ctx;
struct smbsrv_session *smb_sess = NULL;
uint64_t vuid;
+ struct tevent_req *subreq;
- io->smb2.out._pad = 0;
+ io->smb2.out.session_flags = 0;
io->smb2.out.uid = 0;
io->smb2.out.secblob = data_blob(NULL, 0);
- vuid = BVAL(req->in.hdr, SMB2_HDR_UID);
+ vuid = BVAL(req->in.hdr, SMB2_HDR_SESSION_ID);
/*
* only when we got '0' we should allocate a new session
if (vuid == 0) {
struct gensec_security *gensec_ctx;
- status = gensec_server_start(req,
- req->smb_conn->connection->event.ctx,
- req->smb_conn->connection->msg_ctx,
- &gensec_ctx);
+ status = samba_server_gensec_start(req,
+ req->smb_conn->connection->event.ctx,
+ req->smb_conn->connection->msg_ctx,
+ req->smb_conn->lp_ctx,
+ req->smb_conn->negotiate.server_credentials,
+ "cifs",
+ &gensec_ctx);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to start GENSEC server code: %s\n", nt_errstr(status)));
goto failed;
}
- gensec_set_credentials(gensec_ctx, req->smb_conn->negotiate.server_credentials);
-
- gensec_set_target_service(gensec_ctx, "cifs");
-
gensec_want_feature(gensec_ctx, GENSEC_FEATURE_SESSION_KEY);
status = gensec_start_mech_by_oid(gensec_ctx, GENSEC_OID_SPNEGO);
}
/* allocate a new session */
- smb_sess = smbsrv_session_new(req->smb_conn, gensec_ctx);
+ smb_sess = smbsrv_session_new(req->smb_conn, req->smb_conn, gensec_ctx);
if (!smb_sess) {
status = NT_STATUS_INSUFFICIENT_RESOURCES;
goto failed;
goto failed;
}
+ if (smb_sess->session_info) {
+ /* see WSPP test suite - test 11 */
+ status = NT_STATUS_REQUEST_NOT_ACCEPTED;
+ goto failed;
+ }
+
if (!smb_sess->gensec_ctx) {
status = NT_STATUS_INTERNAL_ERROR;
DEBUG(1, ("Internal ERROR: no gensec_ctx on session: %s\n", nt_errstr(status)));
callback_ctx->io = io;
callback_ctx->smb_sess = smb_sess;
- gensec_update_send(smb_sess->gensec_ctx, io->smb2.in.secblob,
- smb2srv_sesssetup_callback, callback_ctx);
+ subreq = gensec_update_send(callback_ctx,
+ req->smb_conn->connection->event.ctx,
+ smb_sess->gensec_ctx,
+ io->smb2.in.secblob);
+ if (!subreq) goto nomem;
+ tevent_req_set_callback(subreq, smb2srv_sesssetup_callback, callback_ctx);
+
+ /* note that we ignore SMB2_NEGOTIATE_SIGNING_ENABLED from the client.
+ This is deliberate as windows does not set it even when it does
+ set SMB2_NEGOTIATE_SIGNING_REQUIRED */
+ if (io->smb2.in.security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) {
+ smb_sess->smb2_signing.required = true;
+ }
+
+ /* disable receipt of more packets on this socket until we've
+ finished with the session setup. This avoids a problem with
+ crashes if we get EOF on the socket while processing a session
+ setup */
+ packet_recv_disable(req->smb_conn->packet);
+
return;
nomem:
status = NT_STATUS_NO_MEMORY;
failed:
talloc_free(smb_sess);
- req->status = auth_nt_status_squash(status);
+ req->status = nt_status_squash(status);
smb2srv_sesssetup_send(req, io);
}
{
union smb_sesssetup *io;
- SMB2SRV_CHECK_BODY_SIZE(req, 0x18, True);
+ SMB2SRV_CHECK_BODY_SIZE(req, 0x18, true);
SMB2SRV_TALLOC_IO_PTR(io, union smb_sesssetup);
- io->smb2.level = RAW_SESSSETUP_SMB2;
- io->smb2.in._pad = SVAL(req->in.body, 0x02);
- io->smb2.in.unknown2 = IVAL(req->in.body, 0x04);
- io->smb2.in.unknown3 = IVAL(req->in.body, 0x08);
+ io->smb2.level = RAW_SESSSETUP_SMB2;
+ io->smb2.in.vc_number = CVAL(req->in.body, 0x02);
+ io->smb2.in.security_mode = CVAL(req->in.body, 0x03);
+ io->smb2.in.capabilities = IVAL(req->in.body, 0x04);
+ io->smb2.in.channel = IVAL(req->in.body, 0x08);
+ io->smb2.in.previous_sessionid = BVAL(req->in.body, 0x10);
SMB2SRV_CHECK(smb2_pull_o16s16_blob(&req->in, io, req->in.body+0x0C, &io->smb2.in.secblob));
- io->smb2.in.unknown4 = BVAL(req->in.body, 0x10);
smb2srv_sesssetup_backend(req, io);
}
-static NTSTATUS smb2srv_logoff_backend(struct smb2srv_request *req)
+static int smb2srv_cleanup_session_destructor(struct smbsrv_session **session)
{
/* TODO: call ntvfs backends to close file of this session */
- talloc_free(req->session);
- req->session = NULL;
+ DEBUG(0,("free session[%p]\n", *session));
+ talloc_free(*session);
+ return 0;
+}
+
+static NTSTATUS smb2srv_logoff_backend(struct smb2srv_request *req)
+{
+ struct smbsrv_session **session_ptr;
+
+ /* we need to destroy the session after sending the reply */
+ session_ptr = talloc(req, struct smbsrv_session *);
+ NT_STATUS_HAVE_NO_MEMORY(session_ptr);
+
+ *session_ptr = req->session;
+ talloc_set_destructor(session_ptr, smb2srv_cleanup_session_destructor);
+
return NT_STATUS_OK;
}
return;
}
- SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x04, False, 0));
+ SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x04, false, 0));
SSVAL(req->out.body, 0x02, 0);
void smb2srv_logoff_recv(struct smb2srv_request *req)
{
- uint16_t _pad;
-
- SMB2SRV_CHECK_BODY_SIZE(req, 0x04, False);
-
- _pad = SVAL(req->in.body, 0x02);
+ SMB2SRV_CHECK_BODY_SIZE(req, 0x04, false);
req->status = smb2srv_logoff_backend(req);
git.samba.org / samba.git / blobdiff