Core SMB2 server
Copyright (C) Stefan Metzmacher 2009
+ Copyright (C) Jeremy Allison 2010
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
*/
#include "includes.h"
+#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
-#include "../libcli/auth/spnego.h"
-#include "ntlmssp.h"
-
-static NTSTATUS smbd_smb2_session_setup(struct smbd_smb2_request *req,
+#include "../auth/gensec/gensec.h"
+#include "auth.h"
+#include "../lib/tsocket/tsocket.h"
+#include "../libcli/security/security.h"
+#include "../lib/util/tevent_ntstatus.h"
+
+static struct tevent_req *smbd_smb2_session_setup_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req,
uint64_t in_session_id,
+ uint8_t in_flags,
uint8_t in_security_mode,
- DATA_BLOB in_security_buffer,
+ uint64_t in_previous_session_id,
+ DATA_BLOB in_security_buffer);
+static NTSTATUS smbd_smb2_session_setup_recv(struct tevent_req *req,
uint16_t *out_session_flags,
+ TALLOC_CTX *mem_ctx,
DATA_BLOB *out_security_buffer,
uint64_t *out_session_id);
-NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req)
+static void smbd_smb2_request_sesssetup_done(struct tevent_req *subreq);
+
+NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *smb2req)
{
const uint8_t *inhdr;
const uint8_t *inbody;
- int i = req->current_idx;
- uint8_t *outhdr;
- DATA_BLOB outbody;
- DATA_BLOB outdyn;
- size_t expected_body_size = 0x19;
- size_t body_size;
+ int i = smb2req->current_idx;
uint64_t in_session_id;
+ uint8_t in_flags;
uint8_t in_security_mode;
+ uint64_t in_previous_session_id;
uint16_t in_security_offset;
uint16_t in_security_length;
DATA_BLOB in_security_buffer;
- uint16_t out_session_flags;
- uint64_t out_session_id;
- uint16_t out_security_offset;
- DATA_BLOB out_security_buffer;
NTSTATUS status;
+ struct tevent_req *subreq;
- inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
-
- if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ status = smbd_smb2_request_verify_sizes(smb2req, 0x19);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(smb2req, status);
}
+ inhdr = (const uint8_t *)smb2req->in.vector[i+0].iov_base;
+ inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
- inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
-
- body_size = SVAL(inbody, 0x00);
- if (body_size != expected_body_size) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
- }
+ in_session_id = BVAL(inhdr, SMB2_HDR_SESSION_ID);
+ in_flags = CVAL(inbody, 0x02);
+ in_security_mode = CVAL(inbody, 0x03);
+ /* Capabilities = IVAL(inbody, 0x04) */
+ /* Channel = IVAL(inbody, 0x08) */
in_security_offset = SVAL(inbody, 0x0C);
in_security_length = SVAL(inbody, 0x0E);
+ in_previous_session_id = BVAL(inbody, 0x10);
- if (in_security_offset != (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ if (in_security_offset != (SMB2_HDR_BODY + smb2req->in.vector[i+1].iov_len)) {
+ return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
}
- if (in_security_length > req->in.vector[i+2].iov_len) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ if (in_security_length > smb2req->in.vector[i+2].iov_len) {
+ return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
}
- in_session_id = BVAL(inhdr, SMB2_HDR_SESSION_ID);
- in_security_mode = CVAL(inbody, 0x03);
- in_security_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
+ in_security_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base;
in_security_buffer.length = in_security_length;
- status = smbd_smb2_session_setup(req,
- in_session_id,
- in_security_mode,
- in_security_buffer,
- &out_session_flags,
- &out_security_buffer,
- &out_session_id);
+ subreq = smbd_smb2_session_setup_send(smb2req,
+ smb2req->sconn->ev_ctx,
+ smb2req,
+ in_session_id,
+ in_flags,
+ in_security_mode,
+ in_previous_session_id,
+ in_security_buffer);
+ if (subreq == NULL) {
+ return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
+ }
+ tevent_req_set_callback(subreq, smbd_smb2_request_sesssetup_done, smb2req);
+
+ return smbd_smb2_request_pending_queue(smb2req, subreq, 500);
+}
+
+static void smbd_smb2_request_sesssetup_done(struct tevent_req *subreq)
+{
+ struct smbd_smb2_request *smb2req =
+ tevent_req_callback_data(subreq,
+ struct smbd_smb2_request);
+ int i = smb2req->current_idx;
+ uint8_t *outhdr;
+ DATA_BLOB outbody;
+ DATA_BLOB outdyn;
+ uint16_t out_session_flags;
+ uint64_t out_session_id;
+ uint16_t out_security_offset;
+ DATA_BLOB out_security_buffer = data_blob_null;
+ NTSTATUS status;
+ NTSTATUS error; /* transport error */
+
+ status = smbd_smb2_session_setup_recv(subreq,
+ &out_session_flags,
+ smb2req,
+ &out_security_buffer,
+ &out_session_id);
+ TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status) &&
!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
status = nt_status_squash(status);
- return smbd_smb2_request_error(req, status);
+ error = smbd_smb2_request_error(smb2req, status);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(smb2req->sconn,
+ nt_errstr(error));
+ return;
+ }
+ return;
}
out_security_offset = SMB2_HDR_BODY + 0x08;
- outhdr = (uint8_t *)req->out.vector[i].iov_base;
+ outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
- outbody = data_blob_talloc(req->out.vector, NULL, 0x08);
+ outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x08);
if (outbody.data == NULL) {
- return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+ error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(smb2req->sconn,
+ nt_errstr(error));
+ return;
+ }
+ return;
}
SBVAL(outhdr, SMB2_HDR_SESSION_ID, out_session_id);
outdyn = out_security_buffer;
- return smbd_smb2_request_done_ex(req, status, outbody, &outdyn,
- __location__);
-}
-
-static int smbd_smb2_session_destructor(struct smbd_smb2_session *session)
-{
- if (session->sconn == NULL) {
- return 0;
- }
-
- /* first free all tcons */
- while (session->tcons.list) {
- talloc_free(session->tcons.list);
+ error = smbd_smb2_request_done_ex(smb2req, status, outbody, &outdyn,
+ __location__);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(smb2req->sconn,
+ nt_errstr(error));
+ return;
}
-
- idr_remove(session->sconn->smb2.sessions.idtree, session->vuid);
- DLIST_REMOVE(session->sconn->smb2.sessions.list, session);
- invalidate_vuid(session->sconn, session->vuid);
-
- session->vuid = 0;
- session->status = NT_STATUS_USER_SESSION_DELETED;
- session->sconn = NULL;
-
- return 0;
}
-static NTSTATUS smbd_smb2_session_setup(struct smbd_smb2_request *req,
- uint64_t in_session_id,
+static NTSTATUS smbd_smb2_auth_generic_return(struct smbXsrv_session *session,
+ struct smbd_smb2_request *smb2req,
uint8_t in_security_mode,
+ uint64_t in_previous_session_id,
DATA_BLOB in_security_buffer,
uint16_t *out_session_flags,
- DATA_BLOB *out_security_buffer,
uint64_t *out_session_id)
{
- struct smbd_smb2_session *session;
NTSTATUS status;
+ bool guest = false;
+ uint8_t session_key[16];
+ struct smbXsrv_session *x = session;
+ struct auth_session_info *session_info;
+ struct smbXsrv_connection *conn = session->connection;
- *out_session_flags = 0;
- *out_session_id = 0;
+ if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
+ lp_server_signing() == SMB_SIGNING_REQUIRED) {
+ x->global->signing_required = true;
+ }
- if (in_session_id == 0) {
- int id;
+ status = gensec_session_info(session->gensec,
+ session->global,
+ &session_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(session);
+ return status;
+ }
- /* create a new session */
- session = talloc_zero(req->sconn, struct smbd_smb2_session);
- if (session == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
- session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
- id = idr_get_new_random(req->sconn->smb2.sessions.idtree,
- session,
- req->sconn->smb2.sessions.limit);
- if (id == -1) {
- return NT_STATUS_INSUFFICIENT_RESOURCES;
- }
- session->vuid = id;
+ if (security_session_user_level(session_info, NULL) < SECURITY_USER) {
+ /* we map anonymous to guest internally */
+ *out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
+ *out_session_flags |= SMB2_SESSION_FLAG_IS_NULL;
+ /* force no signing */
+ x->global->signing_required = false;
+ guest = true;
+ }
- session->tcons.idtree = idr_init(session);
- if (session->tcons.idtree == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
- session->tcons.limit = 0x0000FFFE;
- session->tcons.list = NULL;
+ ZERO_STRUCT(session_key);
+ memcpy(session_key, session_info->session_key.data,
+ MIN(session_info->session_key.length, sizeof(session_key)));
- DLIST_ADD_END(req->sconn->smb2.sessions.list, session,
- struct smbd_smb2_session *);
- session->sconn = req->sconn;
- talloc_set_destructor(session, smbd_smb2_session_destructor);
- } else {
- void *p;
+ x->global->signing_key = data_blob_talloc(x->global,
+ session_key,
+ sizeof(session_key));
+ if (x->global->signing_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ TALLOC_FREE(session);
+ return NT_STATUS_NO_MEMORY;
+ }
- /* lookup an existing session */
- p = idr_find(req->sconn->smb2.sessions.idtree, in_session_id);
- if (p == NULL) {
- return NT_STATUS_USER_SESSION_DELETED;
- }
- session = talloc_get_type_abort(p, struct smbd_smb2_session);
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCMAC");
+ const DATA_BLOB context = data_blob_string_const_null("SmbSign");
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ x->global->signing_key.data);
}
- if (NT_STATUS_IS_OK(session->status)) {
- return NT_STATUS_REQUEST_NOT_ACCEPTED;
+ x->global->application_key = data_blob_dup_talloc(x->global,
+ x->global->signing_key);
+ if (x->global->application_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ TALLOC_FREE(session);
+ return NT_STATUS_NO_MEMORY;
}
- if (session->auth_ntlmssp_state == NULL) {
- status = auth_ntlmssp_start(&session->auth_ntlmssp_state);
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(session);
- return status;
- }
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2APP");
+ const DATA_BLOB context = data_blob_string_const_null("SmbRpc");
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ x->global->application_key.data);
}
+ ZERO_STRUCT(session_key);
- if (in_security_buffer.data[0] == ASN1_APPLICATION(0)) {
- DATA_BLOB secblob_in;
- DATA_BLOB chal_out;
- char *kerb_mech = NULL;
+ x->global->channels[0].signing_key = data_blob_dup_talloc(x->global->channels,
+ x->global->signing_key);
+ if (x->global->channels[0].signing_key.data == NULL) {
+ TALLOC_FREE(session);
+ return NT_STATUS_NO_MEMORY;
+ }
- status = parse_spnego_mechanisms(in_security_buffer,
- &secblob_in, &kerb_mech);
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(session);
- return nt_status_squash(status);
- }
+ data_blob_clear_free(&session_info->session_key);
+ session_info->session_key = data_blob_dup_talloc(session_info,
+ x->global->application_key);
+ if (session_info->session_key.data == NULL) {
+ TALLOC_FREE(session);
+ return NT_STATUS_NO_MEMORY;
+ }
- /* For now, just SPNEGO NTLMSSP - krb5 goes here later.. */
- status = auth_ntlmssp_update(session->auth_ntlmssp_state,
- secblob_in,
- &chal_out);
+ session->compat = talloc_zero(session, user_struct);
+ if (session->compat == NULL) {
+ TALLOC_FREE(session);
+ return NT_STATUS_NO_MEMORY;
+ }
+ session->compat->homes_snum = -1;
+ session->compat->session_info = session_info;
+ session->compat->session_keystr = NULL;
+ session->compat->vuid = session->global->session_wire_id;
+ DLIST_ADD(smb2req->sconn->users, session->compat);
+ smb2req->sconn->num_users++;
+
+ if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
+ session->compat->homes_snum =
+ register_homes_share(session_info->unix_info->unix_name);
+ }
- if (!NT_STATUS_IS_OK(status) &&
- !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
- TALLOC_FREE(session);
- return nt_status_squash(status);
- }
+ if (!session_claim(smb2req->sconn, session->compat)) {
+ DEBUG(1, ("smb2: Failed to claim session "
+ "for vuid=%d\n",
+ session->compat->vuid));
+ TALLOC_FREE(session);
+ return NT_STATUS_LOGON_FAILURE;
+ }
- *out_security_buffer = spnego_gen_auth_response(&chal_out,
- status, OID_NTLMSSP);
+ set_current_user_info(session_info->unix_info->sanitized_username,
+ session_info->unix_info->unix_name,
+ session_info->info->domain_name);
- *out_session_id = session->vuid;
- return status;
- } else if (in_security_buffer.data[0] == ASN1_CONTEXT(1)) {
- DATA_BLOB auth = data_blob_null;
- DATA_BLOB auth_out = data_blob_null;
+ reload_services(smb2req->sconn, conn_snum_used, true);
- /* its an auth packet */
- if (!spnego_parse_auth(in_security_buffer, &auth)) {
+ session->status = NT_STATUS_OK;
+ session->global->auth_session_info = session->session_info;
+ session->global->auth_session_info_seqnum += 1;
+ session->global->channels[0].auth_session_info_seqnum =
+ session->global->auth_session_info_seqnum;
+ session->global->expiration_time = gensec_expire_time(session->gensec);
+
+ if ((in_previous_session_id != 0) &&
+ (session->global->session_wire_id !=
+ in_previous_session_id))
+ {
+ struct tevent_context *ev;
+ struct tevent_req *subreq;
+ bool ok;
+
+ ev = event_context_init(talloc_tos());
+ if (ev == NULL) {
TALLOC_FREE(session);
return NT_STATUS_LOGON_FAILURE;
}
- /* For now, just SPNEGO NTLMSSP - krb5 goes here later.. */
- status = auth_ntlmssp_update(session->auth_ntlmssp_state,
- auth,
- &auth_out);
- if (!NT_STATUS_IS_OK(status)) {
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
+
+ subreq = smb2srv_session_close_previous_send(smb2req, ev,
+ session,
+ in_previous_session_id);
+ if (subreq == NULL) {
TALLOC_FREE(session);
- return nt_status_squash(status);
+ return NT_STATUS_LOGON_FAILURE;
}
- *out_security_buffer = spnego_gen_auth_response(&auth_out,
- status, NULL);
-
- *out_session_id = session->vuid;
- } else if (strncmp((char *)(in_security_buffer.data), "NTLMSSP", 7) == 0) {
-
- /* RAW NTLMSSP */
- status = auth_ntlmssp_update(session->auth_ntlmssp_state,
- in_security_buffer,
- out_security_buffer);
-
- if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- *out_session_id = session->vuid;
+ ok = tevent_req_poll_ntstatus(subreq, ev, &status);
+ if (!ok) {
+ TALLOC_FREE(subreq);
+ TALLOC_FREE(session);
return status;
}
+
+ status = smb2srv_session_close_previous_recv(subreq);
+ TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
- auth_ntlmssp_end(&session->auth_ntlmssp_state);
TALLOC_FREE(session);
- return nt_status_squash(status);
+ return status;
}
- *out_session_id = session->vuid;
}
- /* TODO: setup session key for signing */
+ status = smbXsrv_session_update(session);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("smb2: Failed to update session for vuid=%d - %s\n",
+ session->compat->vuid, nt_errstr(status)));
+ TALLOC_FREE(session);
+ return NT_STATUS_LOGON_FAILURE;
+ }
- if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
- lp_server_signing() == Required) {
- session->do_signing = true;
+ /*
+ * we attach the session to the request
+ * so that the response can be signed
+ */
+ smb2req->session = session;
+ if (!guest) {
+ smb2req->do_signing = true;
}
- if (session->auth_ntlmssp_state->server_info->guest) {
- /* we map anonymous to guest internally */
- *out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
- *out_session_flags |= SMB2_SESSION_FLAG_IS_NULL;
- /* force no signing */
- session->do_signing = false;
- }
-
- session->server_info = session->auth_ntlmssp_state->server_info;
- data_blob_free(&session->server_info->user_session_key);
- session->server_info->user_session_key =
- data_blob_talloc(
- session->server_info,
- session->auth_ntlmssp_state->ntlmssp_state->session_key.data,
- session->auth_ntlmssp_state->ntlmssp_state->session_key.length);
- if (session->auth_ntlmssp_state->ntlmssp_state->session_key.length > 0) {
- if (session->server_info->user_session_key.data == NULL) {
- TALLOC_FREE(session);
- return NT_STATUS_NO_MEMORY;
- }
+ global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
+
+ *out_session_id = session->global->session_wire_id;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS smbd_smb2_reauth_generic_return(struct smbXsrv_session *session,
+ struct smbd_smb2_request *smb2req,
+ uint16_t *out_session_flags,
+ uint64_t *out_session_id)
+{
+ NTSTATUS status;
+ struct smbXsrv_session *x = session;
+ struct auth_session_info *session_info;
+ struct smbXsrv_connection *conn = session->connection;
+
+ status = gensec_session_info(session->gensec,
+ session->global,
+ &session_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(session);
+ return status;
}
- session->session_key = session->server_info->user_session_key;
- session->compat_vuser = talloc_zero(session, user_struct);
- if (session->compat_vuser == NULL) {
+ data_blob_clear_free(&session_info->session_key);
+ session_info->session_key = data_blob_dup_talloc(session_info,
+ x->global->application_key);
+ if (session_info->session_key.data == NULL) {
TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
}
- session->compat_vuser->auth_ntlmssp_state = session->auth_ntlmssp_state;
- session->compat_vuser->homes_snum = -1;
- session->compat_vuser->server_info = session->server_info;
- session->compat_vuser->session_keystr = NULL;
- session->compat_vuser->vuid = session->vuid;
- DLIST_ADD(session->sconn->smb1.sessions.validated_users, session->compat_vuser);
+
+ session->compat->session_info = session_info;
+ session->compat->vuid = session->global->session_wire_id;
+
+ session->compat->homes_snum =
+ register_homes_share(session_info->unix_info->unix_name);
+
+ set_current_user_info(session_info->unix_info->sanitized_username,
+ session_info->unix_info->unix_name,
+ session_info->info->domain_name);
+
+ reload_services(smb2req->sconn, conn_snum_used, true);
session->status = NT_STATUS_OK;
+ TALLOC_FREE(session->global->auth_session_info);
+ session->global->auth_session_info = session->session_info;
+ session->global->auth_session_info_seqnum += 1;
+ session->global->channels[0].auth_session_info_seqnum =
+ session->global->auth_session_info_seqnum;
+ session->global->expiration_time = gensec_expire_time(session->gensec);
+
+ status = smbXsrv_session_update(session);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("smb2: Failed to update session for vuid=%d - %s\n",
+ session->compat->vuid, nt_errstr(status)));
+ TALLOC_FREE(session);
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ conn_clear_vuid_caches(conn->sconn, session->compat->vuid);
/*
* we attach the session to the request
* so that the response can be signed
*/
- req->session = session;
- if (session->do_signing) {
- req->do_signing = true;
- }
+ smb2req->session = session;
+ smb2req->do_signing = true;
- *out_session_id = session->vuid;
- return status;
+ global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
+
+ *out_session_id = session->global->session_wire_id;
+
+ return NT_STATUS_OK;
}
-NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req)
+static NTSTATUS smbd_smb2_auth_generic(struct smbXsrv_session *session,
+ struct smbd_smb2_request *smb2req,
+ uint8_t in_security_mode,
+ uint64_t in_previous_session_id,
+ DATA_BLOB in_security_buffer,
+ uint16_t *out_session_flags,
+ DATA_BLOB *out_security_buffer,
+ uint64_t *out_session_id)
{
- const uint8_t *inhdr;
- const uint8_t *outhdr;
- int i = req->current_idx;
- uint64_t in_session_id;
- void *p;
- struct smbd_smb2_session *session;
- bool chained_fixup = false;
+ NTSTATUS status;
- inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
+ *out_security_buffer = data_blob_null;
- in_session_id = BVAL(inhdr, SMB2_HDR_SESSION_ID);
+ if (session->gensec == NULL) {
+ status = auth_generic_prepare(session,
+ session->connection->remote_address,
+ &session->gensec);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(session);
+ return status;
+ }
+
+ gensec_want_feature(session->gensec, GENSEC_FEATURE_SESSION_KEY);
+ gensec_want_feature(session->gensec, GENSEC_FEATURE_UNIX_TOKEN);
- if (i > 2 && in_session_id == (0xFFFFFFFFFFFFFFFFLL)) {
- /*
- * Chained request - fill in session_id from
- * the previous request out.vector[].iov_base.
- * We can't modify the inhdr here as we have
- * yet to check signing.
- */
- outhdr = (const uint8_t *)req->out.vector[i-3].iov_base;
- in_session_id = BVAL(outhdr, SMB2_HDR_SESSION_ID);
- chained_fixup = true;
+ status = gensec_start_mech_by_oid(session->gensec,
+ GENSEC_OID_SPNEGO);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(session);
+ return status;
+ }
}
- /* lookup an existing session */
- p = idr_find(req->sconn->smb2.sessions.idtree, in_session_id);
- if (p == NULL) {
- return NT_STATUS_USER_SESSION_DELETED;
+ become_root();
+ status = gensec_update(session->gensec,
+ smb2req, NULL,
+ in_security_buffer,
+ out_security_buffer);
+ unbecome_root();
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) &&
+ !NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(session);
+ return nt_status_squash(status);
+ }
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ *out_session_id = session->global->session_wire_id;
+ return status;
}
- session = talloc_get_type_abort(p, struct smbd_smb2_session);
- if (!NT_STATUS_IS_OK(session->status)) {
- return NT_STATUS_ACCESS_DENIED;
+ if (session->global->auth_session_info != NULL) {
+ return smbd_smb2_reauth_generic_return(session,
+ smb2req,
+ out_session_flags,
+ out_session_id);
+ }
+
+ return smbd_smb2_auth_generic_return(session,
+ smb2req,
+ in_security_mode,
+ in_previous_session_id,
+ in_security_buffer,
+ out_session_flags,
+ out_session_id);
+}
+
+static NTSTATUS smbd_smb2_session_setup(struct smbd_smb2_request *smb2req,
+ uint64_t in_session_id,
+ uint8_t in_flags,
+ uint8_t in_security_mode,
+ uint64_t in_previous_session_id,
+ DATA_BLOB in_security_buffer,
+ uint16_t *out_session_flags,
+ DATA_BLOB *out_security_buffer,
+ uint64_t *out_session_id)
+{
+ struct smbXsrv_session *session;
+ NTSTATUS status;
+ NTTIME now = timeval_to_nttime(&req->request_time);
+
+ *out_session_flags = 0;
+ *out_session_id = 0;
+
+ if (in_session_id == 0) {
+ /* create a new session */
+ status = smbXsrv_session_create(smb2req->sconn->conn,
+ now, &session);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ } else {
+ status = smb2srv_session_lookup(smb2req->sconn->conn,
+ in_session_id, now,
+ &session);
+ if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED)) {
+ status = NT_STATUS_OK;
+ }
+ if (NT_STATUS_IS_OK(status)) {
+ session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+ status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+ TALLOC_FREE(session->gensec);
+ }
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ return status;
+ }
}
- set_current_user_info(session->server_info->sanitized_username,
- session->server_info->unix_name,
- pdb_get_domain(session->server_info->sam_account));
+ return smbd_smb2_auth_generic(session,
+ smb2req,
+ in_security_mode,
+ in_previous_session_id,
+ in_security_buffer,
+ out_session_flags,
+ out_security_buffer,
+ out_session_id);
+}
- req->session = session;
+struct smbd_smb2_session_setup_state {
+ struct tevent_context *ev;
+ struct smbd_smb2_request *smb2req;
+ uint64_t in_session_id;
+ uint8_t in_flags;
+ uint8_t in_security_mode;
+ uint64_t in_previous_session_id;
+ DATA_BLOB in_security_buffer;
+ uint16_t out_session_flags;
+ DATA_BLOB out_security_buffer;
+ uint64_t out_session_id;
+};
+
+static struct tevent_req *smbd_smb2_session_setup_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req,
+ uint64_t in_session_id,
+ uint8_t in_flags,
+ uint8_t in_security_mode,
+ uint64_t in_previous_session_id,
+ DATA_BLOB in_security_buffer)
+{
+ struct tevent_req *req;
+ struct smbd_smb2_session_setup_state *state;
+ NTSTATUS status;
- if (chained_fixup) {
- /* Fix up our own outhdr. */
- outhdr = (const uint8_t *)req->out.vector[i].iov_base;
- SBVAL(outhdr, SMB2_HDR_SESSION_ID, in_session_id);
+ req = tevent_req_create(mem_ctx, &state,
+ struct smbd_smb2_session_setup_state);
+ if (req == NULL) {
+ return NULL;
}
- return NT_STATUS_OK;
+ state->ev = ev;
+ state->smb2req = smb2req;
+ state->in_session_id = in_session_id;
+ state->in_flags = in_flags;
+ state->in_security_mode = in_security_mode;
+ state->in_previous_session_id = in_previous_session_id;
+ state->in_security_buffer = in_security_buffer;
+
+ status = smbd_smb2_session_setup(smb2req,
+ in_session_id,
+ in_flags,
+ in_security_mode,
+ in_previous_session_id,
+ in_security_buffer,
+ &state->out_session_flags,
+ &state->out_security_buffer,
+ &state->out_session_id);
+ if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
+ NT_STATUS_IS_OK(status))
+ {
+ talloc_steal(state, state->out_security_buffer.data);
+ }
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
+ }
+
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
}
-NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req)
+static NTSTATUS smbd_smb2_session_setup_recv(struct tevent_req *req,
+ uint16_t *out_session_flags,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *out_security_buffer,
+ uint64_t *out_session_id)
{
- const uint8_t *inbody;
- int i = req->current_idx;
- DATA_BLOB outbody;
- size_t expected_body_size = 0x04;
- size_t body_size;
+ struct smbd_smb2_session_setup_state *state =
+ tevent_req_data(req,
+ struct smbd_smb2_session_setup_state);
+ NTSTATUS status;
- if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ if (tevent_req_is_nterror(req, &status)) {
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ tevent_req_received(req);
+ return status;
+ }
+ } else {
+ status = NT_STATUS_OK;
}
- inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
+ *out_session_flags = state->out_session_flags;
+ *out_security_buffer = state->out_security_buffer;
+ *out_session_id = state->out_session_id;
- body_size = SVAL(inbody, 0x00);
- if (body_size != expected_body_size) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ talloc_steal(mem_ctx, out_security_buffer->data);
+ tevent_req_received(req);
+ return status;
+}
+
+NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req)
+{
+ NTSTATUS status;
+ DATA_BLOB outbody;
+ struct connection_struct *conn, *next_conn;
+
+ status = smbd_smb2_request_verify_sizes(req, 0x04);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
}
/*
* TODO: cancel all outstanding requests on the session
- * and delete all tree connections.
*/
- smbd_smb2_session_destructor(req->session);
+ file_close_user(req->sconn, req->session->compat->vuid);
+
+ for (conn=req->sconn->connections; conn; conn=next_conn) {
+ struct smbXsrv_tcon *tcon;
+
+ next_conn = conn->next;
+ tcon = conn->tcon;
+
+ if (conn->vuid != req->session->compat->vuid) {
+ continue;
+ }
+
+ set_current_service(conn, 0, True);
+ close_cnum(conn, conn->vuid);
+
+ /* for now tcon is NULL for SMB1 */
+ TALLOC_FREE(tcon);
+ }
+
+ invalidate_vuid(req->sconn, req->session->compat->vuid);
+ req->session->compat = NULL;
+
+ req->session->status = NT_STATUS_USER_SESSION_DELETED;
+
/*
* we may need to sign the response, so we need to keep
* the session until the response is sent to the wire.
git.samba.org / metze / samba / wip.git / blobdiff