#include "lib/crypto/aes_ccm_128.h"
#include "lib/crypto/aes_gcm_128.h"
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_SMB2
+
static struct tevent_req *smbd_smb2_session_setup_wrap_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbd_smb2_request *smb2req,
in_security_buffer.length = in_security_length;
subreq = smbd_smb2_session_setup_wrap_send(smb2req,
- smb2req->sconn->ev_ctx,
+ smb2req->ev_ctx,
smb2req,
in_session_id,
in_flags,
struct smbXsrv_session *x = session;
struct smbXsrv_session_auth0 *auth = *_auth;
struct smbXsrv_connection *xconn = smb2req->xconn;
+ size_t i;
struct _derivation {
DATA_BLOB label;
DATA_BLOB context;
struct _derivation *d;
DATA_BLOB p;
struct hc_sha512state sctx;
- size_t i;
preauth = talloc_move(smb2req, &auth->preauth);
}
if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
- lp_server_signing() == SMB_SIGNING_REQUIRED) {
- x->global->signing_required = true;
+ (xconn->smb2.server.security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
+ {
+ x->global->signing_flags = SMBXSRV_SIGNING_REQUIRED;
}
if ((lp_smb_encrypt(-1) >= SMB_SIGNING_DESIRED) &&
(xconn->smb2.client.capabilities & SMB2_CAP_ENCRYPTION)) {
- x->encryption_desired = true;
+ x->global->encryption_flags = SMBXSRV_ENCRYPTION_DESIRED;
}
if (lp_smb_encrypt(-1) == SMB_SIGNING_REQUIRED) {
- x->encryption_desired = true;
- x->global->encryption_required = true;
+ x->global->encryption_flags = SMBXSRV_ENCRYPTION_REQUIRED |
+ SMBXSRV_ENCRYPTION_DESIRED;
}
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;
+ if (security_session_user_level(session_info, NULL) == SECURITY_GUEST) {
+ *out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
+ }
/* force no signing */
- x->global->signing_required = false;
+ x->global->signing_flags &= ~SMBXSRV_SIGNING_REQUIRED;
+ /* we map anonymous to guest internally */
guest = true;
}
- if (guest && x->global->encryption_required) {
+ if (guest && (x->global->encryption_flags & SMBXSRV_ENCRYPTION_REQUIRED)) {
DEBUG(1,("reject guest session as encryption is required\n"));
return NT_STATUS_ACCESS_DENIED;
}
if (xconn->smb2.server.cipher == 0) {
- if (x->global->encryption_required) {
+ if (x->global->encryption_flags & SMBXSRV_ENCRYPTION_REQUIRED) {
DEBUG(1,("reject session with dialect[0x%04X] "
"as encryption is required\n",
xconn->smb2.server.dialect));
return NT_STATUS_ACCESS_DENIED;
}
+ } else {
+ x->global->channels[0].encryption_cipher = xconn->smb2.server.cipher;
}
- if (x->encryption_desired) {
+ if (x->global->encryption_flags & SMBXSRV_ENCRYPTION_DESIRED) {
*out_session_flags |= SMB2_SESSION_FLAG_ENCRYPT_DATA;
}
reload_services(smb2req->sconn, conn_snum_used, true);
session->status = NT_STATUS_OK;
- session->global->auth_session_info = session_info;
+ session->global->auth_session_info = talloc_move(session->global,
+ &session_info);
session->global->auth_session_info_seqnum += 1;
- session->global->channels[0].auth_session_info_seqnum =
- session->global->auth_session_info_seqnum;
+ for (i=0; i < session->global->num_channels; i++) {
+ struct smbXsrv_channel_global0 *_c =
+ &session->global->channels[i];
+
+ _c->auth_session_info_seqnum =
+ session->global->auth_session_info_seqnum;
+ }
session->global->auth_time = timeval_to_nttime(&smb2req->request_time);
session->global->expiration_time = gensec_expire_time(auth->gensec);
global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
*out_session_id = session->global->session_wire_id;
+ smb2req->last_session_id = session->global->session_wire_id;
return NT_STATUS_OK;
}
NTSTATUS status;
struct smbXsrv_session *x = session;
struct smbXsrv_session_auth0 *auth = *_auth;
+ struct smbXsrv_connection *xconn = smb2req->xconn;
+ size_t i;
*_auth = NULL;
session->status = NT_STATUS_OK;
TALLOC_FREE(session->global->auth_session_info);
- session->global->auth_session_info = session_info;
+ session->global->auth_session_info = talloc_move(session->global,
+ &session_info);
session->global->auth_session_info_seqnum += 1;
- session->global->channels[0].auth_session_info_seqnum =
- session->global->auth_session_info_seqnum;
+ for (i=0; i < session->global->num_channels; i++) {
+ struct smbXsrv_channel_global0 *_c =
+ &session->global->channels[i];
+
+ _c->auth_session_info_seqnum =
+ session->global->auth_session_info_seqnum;
+ }
session->global->auth_time = timeval_to_nttime(&smb2req->request_time);
session->global->expiration_time = gensec_expire_time(auth->gensec);
return NT_STATUS_LOGON_FAILURE;
}
- conn_clear_vuid_caches(smb2req->sconn, session->compat->vuid);
+ conn_clear_vuid_caches(xconn->client->sconn, session->compat->vuid);
if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
smb2req->do_signing = true;
return NT_STATUS_OK;
}
+static NTSTATUS smbd_smb2_bind_auth_return(struct smbXsrv_session *session,
+ struct smbXsrv_session_auth0 **_auth,
+ struct smbd_smb2_request *smb2req,
+ struct auth_session_info *session_info,
+ uint16_t *out_session_flags,
+ uint64_t *out_session_id)
+{
+ NTSTATUS status;
+ struct smbXsrv_session *x = session;
+ struct smbXsrv_session_auth0 *auth = *_auth;
+ struct smbXsrv_connection *xconn = smb2req->xconn;
+ struct smbXsrv_channel_global0 *c = NULL;
+ uint8_t session_key[16];
+ size_t i;
+ struct _derivation {
+ DATA_BLOB label;
+ DATA_BLOB context;
+ };
+ struct {
+ struct _derivation signing;
+ } derivation = { };
+ bool ok;
+
+ *_auth = NULL;
+
+ if (xconn->protocol >= PROTOCOL_SMB3_10) {
+ struct smbXsrv_preauth *preauth;
+ struct _derivation *d;
+ DATA_BLOB p;
+ struct hc_sha512state sctx;
+
+ preauth = talloc_move(smb2req, &auth->preauth);
+
+ samba_SHA512_Init(&sctx);
+ samba_SHA512_Update(&sctx, preauth->sha512_value,
+ sizeof(preauth->sha512_value));
+ for (i = 1; i < smb2req->in.vector_count; i++) {
+ samba_SHA512_Update(&sctx,
+ smb2req->in.vector[i].iov_base,
+ smb2req->in.vector[i].iov_len);
+ }
+ samba_SHA512_Final(preauth->sha512_value, &sctx);
+
+ p = data_blob_const(preauth->sha512_value,
+ sizeof(preauth->sha512_value));
+
+ d = &derivation.signing;
+ d->label = data_blob_string_const_null("SMBSigningKey");
+ d->context = p;
+
+ } else if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ struct _derivation *d;
+
+ d = &derivation.signing;
+ d->label = data_blob_string_const_null("SMB2AESCMAC");
+ d->context = data_blob_string_const_null("SmbSign");
+ }
+
+ status = smbXsrv_session_find_channel(session, xconn, &c);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ ok = security_token_is_sid(session_info->security_token,
+ &x->global->auth_session_info->security_token->sids[0]);
+ if (!ok) {
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
+ if (session_info->session_key.length == 0) {
+ /* See [MS-SMB2] 3.3.5.2.4 for the return code. */
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
+ ZERO_STRUCT(session_key);
+ memcpy(session_key, session_info->session_key.data,
+ MIN(session_info->session_key.length, sizeof(session_key)));
+
+ c->signing_key = data_blob_talloc(x->global,
+ session_key,
+ sizeof(session_key));
+ if (c->signing_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ struct _derivation *d = &derivation.signing;
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ d->label.data, d->label.length,
+ d->context.data, d->context.length,
+ c->signing_key.data);
+ }
+ ZERO_STRUCT(session_key);
+
+ TALLOC_FREE(auth);
+ status = smbXsrv_session_update(session);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
+ (unsigned long long)session->compat->vuid,
+ nt_errstr(status)));
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ *out_session_id = session->global->session_wire_id;
+
+ return NT_STATUS_OK;
+}
+
struct smbd_smb2_session_setup_state {
struct tevent_context *ev;
struct smbd_smb2_request *smb2req;
NTTIME now = timeval_to_nttime(&smb2req->request_time);
struct tevent_req *subreq;
struct smbXsrv_channel_global0 *c = NULL;
+ enum security_user_level seclvl;
req = tevent_req_create(mem_ctx, &state,
struct smbd_smb2_session_setup_state);
return tevent_req_post(req, ev);
}
+ if (!smb2req->xconn->client->server_multi_channel_enabled) {
+ tevent_req_nterror(req, NT_STATUS_REQUEST_NOT_ACCEPTED);
+ return tevent_req_post(req, ev);
+ }
+
+ if (in_session_id == 0) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ if (smb2req->session == NULL) {
+ tevent_req_nterror(req, NT_STATUS_USER_SESSION_DELETED);
+ return tevent_req_post(req, ev);
+ }
+
+ if (!smb2req->do_signing) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ status = smbXsrv_session_find_channel(smb2req->session,
+ smb2req->xconn,
+ &c);
+ if (NT_STATUS_IS_OK(status)) {
+ if (c->signing_key.length == 0) {
+ goto auth;
+ }
+ tevent_req_nterror(req, NT_STATUS_REQUEST_NOT_ACCEPTED);
+ return tevent_req_post(req, ev);
+ }
+
/*
- * We do not support multi channel.
+ * OLD: 3.00 NEW 3.02 => INVALID_PARAMETER
+ * OLD: 3.02 NEW 3.00 => INVALID_PARAMETER
+ * OLD: 2.10 NEW 3.02 => ACCESS_DENIED
+ * OLD: 3.02 NEW 2.10 => ACCESS_DENIED
*/
- tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
- return tevent_req_post(req, ev);
+ if (smb2req->session->global->connection_dialect
+ < SMB2_DIALECT_REVISION_222)
+ {
+ tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
+ return tevent_req_post(req, ev);
+ }
+ if (smb2req->xconn->smb2.server.dialect
+ < SMB2_DIALECT_REVISION_222)
+ {
+ tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
+ return tevent_req_post(req, ev);
+ }
+ if (smb2req->session->global->connection_dialect
+ != smb2req->xconn->smb2.server.dialect)
+ {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ seclvl = security_session_user_level(
+ smb2req->session->global->auth_session_info,
+ NULL);
+ if (seclvl < SECURITY_USER) {
+ tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
+ return tevent_req_post(req, ev);
+ }
+
+ status = smbXsrv_session_add_channel(smb2req->session,
+ smb2req->xconn,
+ &c);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
+ }
+
+ status = smbXsrv_session_update(smb2req->session);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
+ }
}
+auth:
+
if (state->in_session_id == 0) {
/* create a new session */
status = smbXsrv_session_create(state->smb2req->xconn,
if (state->auth->gensec == NULL) {
status = auth_generic_prepare(state->auth,
state->smb2req->xconn->remote_address,
+ state->smb2req->xconn->local_address,
+ "SMB2",
&state->auth->gensec);
if (tevent_req_nterror(req, status)) {
return tevent_req_post(req, ev);
gensec_want_feature(state->auth->gensec, GENSEC_FEATURE_SESSION_KEY);
gensec_want_feature(state->auth->gensec, GENSEC_FEATURE_UNIX_TOKEN);
+ gensec_want_feature(state->auth->gensec, GENSEC_FEATURE_SMB_TRANSPORT);
status = gensec_start_mech_by_oid(state->auth->gensec,
GENSEC_OID_SPNEGO);
}
status = gensec_session_info(state->auth->gensec,
- state->session->global,
+ state,
&state->session_info);
if (tevent_req_nterror(req, status)) {
return;
struct smbd_smb2_session_setup_state);
NTSTATUS status;
+ if (state->in_flags & SMB2_SESSION_FLAG_BINDING) {
+ status = smbd_smb2_bind_auth_return(state->session,
+ &state->auth,
+ state->smb2req,
+ state->session_info,
+ &state->out_session_flags,
+ &state->out_session_id);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+ tevent_req_done(req);
+ return;
+ }
+
if (state->session->global->auth_session_info != NULL) {
status = smbd_smb2_reauth_generic_return(state->session,
&state->auth,
return smbd_smb2_request_error(req, status);
}
- subreq = smbd_smb2_logoff_send(req, req->sconn->ev_ctx, req);
+ subreq = smbd_smb2_logoff_send(req, req->ev_ctx, req);
if (subreq == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
struct smbd_smb2_logoff_state *state = tevent_req_data(
req, struct smbd_smb2_logoff_state);
NTSTATUS status;
+ bool ok;
+ const struct GUID *client_guid =
+ &state->smb2req->session->client->connections->smb2.client.guid;
status = smb2srv_session_shutdown_recv(subreq);
if (tevent_req_nterror(req, status)) {
}
TALLOC_FREE(subreq);
+ if (!GUID_all_zero(client_guid)) {
+ ok = remote_arch_cache_delete(client_guid);
+ if (!ok) {
+ /* Most likely not an error, but not in cache */
+ DBG_DEBUG("Deletion from remote arch cache failed\n");
+ }
+ }
+
/*
* As we've been awoken, we may have changed
* uid in the meantime. Ensure we're still
git.samba.org / amitay / samba.git / blobdiff