diff options
Diffstat (limited to 'source4/smb_server/smb2/negprot.c')
-rw-r--r-- | source4/smb_server/smb2/negprot.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/source4/smb_server/smb2/negprot.c b/source4/smb_server/smb2/negprot.c new file mode 100644 index 0000000000..630f38b159 --- /dev/null +++ b/source4/smb_server/smb2/negprot.c @@ -0,0 +1,177 @@ +/* + Unix SMB2 implementation. + + Copyright (C) Andrew Bartlett 2001-2005 + Copyright (C) Stefan Metzmacher 2005 + + 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 + (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, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "includes.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/smb2/smb2_server.h" +#include "smbd/service_stream.h" + +static NTSTATUS smb2srv_negprot_secblob(struct smb2srv_request *req, DATA_BLOB *_blob) +{ + struct gensec_security *gensec_security; + DATA_BLOB null_data_blob = data_blob(NULL, 0); + DATA_BLOB blob; + NTSTATUS nt_status; + struct cli_credentials *server_credentials; + + nt_status = gensec_server_start(req, &gensec_security, + req->smb_conn->connection->event.ctx); + if (!NT_STATUS_IS_OK(nt_status)) { + DEBUG(0, ("Failed to start GENSEC: %s\n", nt_errstr(nt_status))); + smbsrv_terminate_connection(req->smb_conn, "Failed to start GENSEC\n"); + return nt_status; + } + + server_credentials = cli_credentials_init(req); + if (!server_credentials) { + smbsrv_terminate_connection(req->smb_conn, "Failed to init server credentials\n"); + return NT_STATUS_NO_MEMORY; + } + + cli_credentials_set_conf(server_credentials); + nt_status = cli_credentials_set_machine_account(server_credentials); + if (!NT_STATUS_IS_OK(nt_status)) { + DEBUG(10, ("Failed to obtain server credentials, perhaps a standalone server?: %s\n", nt_errstr(nt_status))); + talloc_free(server_credentials); + server_credentials = NULL; + } + + req->smb_conn->negotiate.server_credentials = talloc_steal(req->smb_conn, server_credentials); + + gensec_set_target_service(gensec_security, "cifs"); + + gensec_set_credentials(gensec_security, server_credentials); + + nt_status = gensec_start_mech_by_oid(gensec_security, GENSEC_OID_SPNEGO); + if (!NT_STATUS_IS_OK(nt_status)) { + DEBUG(0, ("Failed to start SPNEGO: %s\n", nt_errstr(nt_status))); + smbsrv_terminate_connection(req->smb_conn, "Failed to start SPNEGO\n"); + return nt_status; + } + + nt_status = gensec_update(gensec_security, req, null_data_blob, &blob); + if (!NT_STATUS_IS_OK(nt_status) && !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) { + DEBUG(0, ("Failed to get SPNEGO to give us the first token: %s\n", nt_errstr(nt_status))); + smbsrv_terminate_connection(req->smb_conn, "Failed to start SPNEGO - no first token\n"); + return nt_status; + } + + *_blob = blob; + return NT_STATUS_OK; +} + +static NTSTATUS smb2srv_negprot_backend(struct smb2srv_request *req, struct smb2_negprot *io) +{ + NTSTATUS status; + struct timeval current_time; + struct timeval boot_time; + + current_time = timeval_current(); /* TODO: handle timezone?! */ + boot_time = timeval_current(); /* TODO: fix me */ + + io->out._pad = 0; + io->out.unknown2 = 0x06; + ZERO_STRUCT(io->out.sessid); + io->out.unknown3 = 0x0d; + io->out.unknown4 = 0x00; + io->out.unknown5 = 0x01; + io->out.unknown6 = 0x01; + io->out.unknown7 = 0x01; + io->out.current_time = timeval_to_nttime(¤t_time); + io->out.boot_time = timeval_to_nttime(&boot_time); + status = smb2srv_negprot_secblob(req, &io->out.secblob); + NT_STATUS_NOT_OK_RETURN(status); + io->out.unknown9 = 0x204d4c20; + + return NT_STATUS_OK; +} + +static void smb2srv_negprot_send(struct smb2srv_request *req, struct smb2_negprot *io) +{ + NTSTATUS status; + + if (NT_STATUS_IS_ERR(req->status)) { + smb2srv_send_error(req, req->status); /* TODO: is this correct? */ + return; + } + + status = smb2srv_setup_reply(req, 0x40, io->out.secblob.length); + if (!NT_STATUS_IS_OK(status)) { + smbsrv_terminate_connection(req->smb_conn, nt_errstr(status)); + talloc_free(req); + return; + } + + SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(req->status)); + + SSVAL(req->out.body, 0x02, io->out._pad); + SIVAL(req->out.body, 0x04, io->out.unknown2); + memcpy(req->out.body+0x08, io->out.sessid, 16); + SIVAL(req->out.body, 0x18, io->out.unknown3); + SSVAL(req->out.body, 0x1C, io->out.unknown4); + SIVAL(req->out.body, 0x1E, io->out.unknown5); + SIVAL(req->out.body, 0x22, io->out.unknown6); + SSVAL(req->out.body, 0x26, io->out.unknown7); + push_nttime(req->out.body, 0x28, io->out.current_time); + push_nttime(req->out.body, 0x30, io->out.boot_time); + status = smb2_push_o16s16_blob(&req->out, 0x38, io->out.secblob); + if (!NT_STATUS_IS_OK(status)) { + smbsrv_terminate_connection(req->smb_conn, nt_errstr(status)); + talloc_free(req); + return; + } + + SIVAL(req->out.body, 0x3C, io->out.unknown9); + + smb2srv_send_reply(req); +} + +void smb2srv_negprot_recv(struct smb2srv_request *req) +{ + struct smb2_negprot *io; + + if (req->in.body_size < 0x26) { + smb2srv_send_error(req, NT_STATUS_FOOBAR); + return; + } + + io = talloc(req, struct smb2_negprot); + if (!io) { + smbsrv_terminate_connection(req->smb_conn, nt_errstr(NT_STATUS_NO_MEMORY)); + talloc_free(req); + return; + } + + io->in.unknown1 = SVAL(req->in.body, 0x02); + memcpy(io->in.unknown2, req->in.body + 0x04, 0x20); + io->in.unknown3 = SVAL(req->in.body, 0x24); + + req->status = smb2srv_negprot_backend(req, io); + + if (req->control_flags & SMB2SRV_REQ_CTRL_FLAG_NOT_REPLY) { + talloc_free(req); + return; + } + smb2srv_negprot_send(req, io); +} |