#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
-#include "../libcli/auth/spnego.h"
#include "../auth/gensec/gensec.h"
-#include "../auth/ntlmssp/ntlmssp.h"
-#include "ntlmssp_wrap.h"
-#include "../librpc/gen_ndr/krb5pac.h"
-#include "libads/kerberos_proto.h"
-#include "../lib/util/asn1.h"
#include "auth.h"
#include "../lib/tsocket/tsocket.h"
#include "../libcli/security/security.h"
+#include "../lib/util/tevent_ntstatus.h"
-static NTSTATUS smbd_smb2_session_setup(struct smbd_smb2_request *smb2req,
+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);
+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 = smb2req->current_idx;
- uint8_t *outhdr;
- DATA_BLOB outbody;
- DATA_BLOB outdyn;
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 = data_blob_null;
NTSTATUS status;
+ struct tevent_req *subreq;
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;
+ inhdr = SMBD_SMB2_IN_HDR_PTR(smb2req);
+ inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
+ 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 + smb2req->in.vector[i+1].iov_len)) {
+ if (in_security_offset != (SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(smb2req))) {
return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
}
- if (in_security_length > smb2req->in.vector[i+2].iov_len) {
+ if (in_security_length > SMBD_SMB2_IN_DYN_LEN(smb2req)) {
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 *)smb2req->in.vector[i+2].iov_base;
+ in_security_buffer.data = SMBD_SMB2_IN_DYN_PTR(smb2req);
in_security_buffer.length = in_security_length;
- status = smbd_smb2_session_setup(smb2req,
- 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);
+ uint8_t *outhdr;
+ DATA_BLOB outbody;
+ DATA_BLOB outdyn;
+ uint16_t out_session_flags = 0;
+ uint64_t out_session_id = 0;
+ 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(smb2req, status);
+ error = smbd_smb2_request_error(smb2req, status);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(smb2req->xconn,
+ nt_errstr(error));
+ return;
+ }
+ return;
}
out_security_offset = SMB2_HDR_BODY + 0x08;
- outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
+ outhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
- outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x08);
+ outbody = smbd_smb2_generate_outbody(smb2req, 0x08);
if (outbody.data == NULL) {
- return smbd_smb2_request_error(smb2req, 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->xconn,
+ nt_errstr(error));
+ return;
+ }
+ return;
}
SBVAL(outhdr, SMB2_HDR_SESSION_ID, out_session_id);
outdyn = out_security_buffer;
- return smbd_smb2_request_done_ex(smb2req, 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->xconn,
+ 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;
}
-#ifdef HAVE_KRB5
-static NTSTATUS smbd_smb2_session_setup_krb5(struct smbd_smb2_session *session,
+static NTSTATUS smbd_smb2_auth_generic_return(struct smbXsrv_session *session,
struct smbd_smb2_request *smb2req,
uint8_t in_security_mode,
- const DATA_BLOB *secblob,
- const char *mechOID,
+ struct auth_session_info *session_info,
uint16_t *out_session_flags,
- DATA_BLOB *out_security_buffer,
uint64_t *out_session_id)
{
- DATA_BLOB ap_rep = data_blob_null;
- DATA_BLOB ap_rep_wrapped = data_blob_null;
- DATA_BLOB ticket = data_blob_null;
- DATA_BLOB session_key = data_blob_null;
- DATA_BLOB secblob_out = data_blob_null;
- uint8 tok_id[2];
- struct PAC_LOGON_INFO *logon_info = NULL;
- char *principal = NULL;
- char *user = NULL;
- char *domain = NULL;
- struct passwd *pw = NULL;
NTSTATUS status;
- char *real_username;
- bool username_was_mapped = false;
- bool map_domainuser_to_guest = false;
bool guest = false;
+ uint8_t session_key[16];
+ struct smbXsrv_session *x = session;
+ struct smbXsrv_connection *xconn = smb2req->xconn;
- if (!spnego_parse_krb5_wrap(talloc_tos(), *secblob, &ticket, tok_id)) {
- status = NT_STATUS_LOGON_FAILURE;
- goto fail;
+ if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
+ lp_server_signing() == SMB_SIGNING_REQUIRED) {
+ x->global->signing_required = true;
}
- status = ads_verify_ticket(smb2req, lp_realm(), 0, &ticket,
- &principal, &logon_info, &ap_rep,
- &session_key, true);
+ if (lp_smb_encrypt(-1) == SMB_SIGNING_REQUIRED) {
+ x->global->encryption_required = true;
+ }
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1,("smb2: Failed to verify incoming ticket with error %s!\n",
- nt_errstr(status)));
- if (!NT_STATUS_EQUAL(status, NT_STATUS_TIME_DIFFERENCE_AT_DC)) {
- status = NT_STATUS_LOGON_FAILURE;
+ 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;
+ }
+
+ if (guest && x->global->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) {
+ DEBUG(1,("reject session with dialect[0x%04X] "
+ "as encryption is required\n",
+ xconn->smb2.server.dialect));
+ return NT_STATUS_ACCESS_DENIED;
}
- goto fail;
}
- status = get_user_from_kerberos_info(talloc_tos(),
- session->sconn->remote_hostname,
- principal, logon_info,
- &username_was_mapped,
- &map_domainuser_to_guest,
- &user, &domain,
- &real_username, &pw);
- if (!NT_STATUS_IS_OK(status)) {
- goto fail;
+ if (x->global->encryption_required) {
+ *out_session_flags |= SMB2_SESSION_FLAG_ENCRYPT_DATA;
}
- /* save the PAC data if we have it */
- if (logon_info) {
- netsamlogon_cache_store(user, &logon_info->info3);
+ ZERO_STRUCT(session_key);
+ memcpy(session_key, session_info->session_key.data,
+ MIN(session_info->session_key.length, sizeof(session_key)));
+
+ 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);
+ return NT_STATUS_NO_MEMORY;
}
- /* setup the string used by %U */
- sub_set_smb_name(real_username);
+ if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCMAC");
+ const DATA_BLOB context = data_blob_string_const_null("SmbSign");
- /* reload services so that the new %U is taken into account */
- reload_services(smb2req->sconn, conn_snum_used, true);
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ x->global->signing_key.data);
+ }
- status = make_session_info_krb5(session,
- user, domain, real_username, pw,
- logon_info, map_domainuser_to_guest,
- username_was_mapped,
- &session_key,
- &session->session_info);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("smb2: make_server_info_krb5 failed\n"));
- goto fail;
+ if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCCM");
+ const DATA_BLOB context = data_blob_string_const_null("ServerIn ");
+
+ x->global->decryption_key = data_blob_talloc(x->global,
+ session_key,
+ sizeof(session_key));
+ if (x->global->decryption_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ x->global->decryption_key.data);
}
- if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
- lp_server_signing() == SMB_SIGNING_REQUIRED) {
- session->do_signing = true;
+ if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCCM");
+ const DATA_BLOB context = data_blob_string_const_null("ServerOut");
+
+ x->global->encryption_key = data_blob_talloc(x->global,
+ session_key,
+ sizeof(session_key));
+ if (x->global->encryption_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ x->global->encryption_key.data);
+
+ generate_random_buffer((uint8_t *)&x->nonce_high, sizeof(x->nonce_high));
+ x->nonce_low = 1;
}
- if (security_session_user_level(session->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 */
- session->do_signing = false;
- guest = true;
+ 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);
+ return NT_STATUS_NO_MEMORY;
}
- session->session_key = session->session_info->session_key;
+ if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2APP");
+ const DATA_BLOB context = data_blob_string_const_null("SmbRpc");
- session->compat_vuser = talloc_zero(session, user_struct);
- if (session->compat_vuser == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ x->global->application_key.data);
}
- session->compat_vuser->gensec_security = NULL;
- session->compat_vuser->homes_snum = -1;
- session->compat_vuser->session_info = session->session_info;
- session->compat_vuser->session_keystr = NULL;
- session->compat_vuser->vuid = session->vuid;
- DLIST_ADD(session->sconn->smb1.sessions.validated_users, session->compat_vuser);
+ ZERO_STRUCT(session_key);
- if (security_session_user_level(session->session_info, NULL) >= SECURITY_USER) {
- session->compat_vuser->homes_snum =
- register_homes_share(session->session_info->unix_info->unix_name);
+ 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) {
+ return NT_STATUS_NO_MEMORY;
}
- if (!session_claim(session->sconn, session->compat_vuser)) {
- DEBUG(1, ("smb2: Failed to claim session "
- "for vuid=%d\n",
- session->compat_vuser->vuid));
- goto fail;
+ 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) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ session->compat = talloc_zero(session, struct user_struct);
+ if (session->compat == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
+ session->compat->session = session;
+ 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);
+ }
+
+ 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;
+ session->global->auth_session_info = 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->auth_time = timeval_to_nttime(&smb2req->request_time);
+ session->global->expiration_time = gensec_expire_time(session->gensec);
+
+ if (!session_claim(session)) {
+ DEBUG(1, ("smb2: Failed to claim session "
+ "for vuid=%llu\n",
+ (unsigned long long)session->compat->vuid));
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ 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;
+ }
/*
* we attach the session to the request
}
global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
- status = NT_STATUS_OK;
-
- /* wrap that up in a nice GSS-API wrapping */
- ap_rep_wrapped = spnego_gen_krb5_wrap(talloc_tos(), ap_rep,
- TOK_ID_KRB_AP_REP);
-
- secblob_out = spnego_gen_auth_response(
- talloc_tos(),
- &ap_rep_wrapped,
- status,
- mechOID);
-
- *out_security_buffer = data_blob_talloc(smb2req,
- secblob_out.data,
- secblob_out.length);
- if (secblob_out.data && out_security_buffer->data == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
- }
- data_blob_free(&ap_rep);
- data_blob_free(&ap_rep_wrapped);
- data_blob_free(&ticket);
- data_blob_free(&session_key);
- data_blob_free(&secblob_out);
-
- *out_session_id = session->vuid;
+ *out_session_id = session->global->session_wire_id;
return NT_STATUS_OK;
-
- fail:
-
- data_blob_free(&ap_rep);
- data_blob_free(&ap_rep_wrapped);
- data_blob_free(&ticket);
- data_blob_free(&session_key);
- data_blob_free(&secblob_out);
-
- ap_rep_wrapped = data_blob_null;
- secblob_out = spnego_gen_auth_response(
- talloc_tos(),
- &ap_rep_wrapped,
- status,
- mechOID);
-
- *out_security_buffer = data_blob_talloc(smb2req,
- secblob_out.data,
- secblob_out.length);
- data_blob_free(&secblob_out);
- return status;
}
-#endif
-static NTSTATUS smbd_smb2_spnego_negotiate(struct smbd_smb2_session *session,
+static NTSTATUS smbd_smb2_reauth_generic_return(struct smbXsrv_session *session,
struct smbd_smb2_request *smb2req,
- uint8_t in_security_mode,
- DATA_BLOB in_security_buffer,
+ struct auth_session_info *session_info,
uint16_t *out_session_flags,
- DATA_BLOB *out_security_buffer,
uint64_t *out_session_id)
{
- DATA_BLOB secblob_in = data_blob_null;
- DATA_BLOB chal_out = data_blob_null;
- char *kerb_mech = NULL;
NTSTATUS status;
+ struct smbXsrv_session *x = session;
- /* Ensure we have no old NTLM state around. */
- TALLOC_FREE(session->gensec_security);
-
- status = parse_spnego_mechanisms(talloc_tos(), in_security_buffer,
- &secblob_in, &kerb_mech);
- if (!NT_STATUS_IS_OK(status)) {
- goto out;
- }
-
-#ifdef HAVE_KRB5
- if (kerb_mech && ((lp_security()==SEC_ADS) ||
- USE_KERBEROS_KEYTAB) ) {
- status = smbd_smb2_session_setup_krb5(session,
- smb2req,
- in_security_mode,
- &secblob_in,
- kerb_mech,
- out_session_flags,
- out_security_buffer,
- out_session_id);
-
- goto out;
+ 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) {
+ return NT_STATUS_NO_MEMORY;
}
-#endif
- if (kerb_mech) {
- /* The mechtoken is a krb5 ticket, but
- * we need to fall back to NTLM. */
+ session->compat->session_info = session_info;
+ session->compat->vuid = session->global->session_wire_id;
- DEBUG(3,("smb2: Got krb5 ticket in SPNEGO "
- "but set to downgrade to NTLMSSP\n"));
+ session->compat->homes_snum =
+ register_homes_share(session_info->unix_info->unix_name);
- status = NT_STATUS_MORE_PROCESSING_REQUIRED;
- } else {
- /* Fall back to NTLMSSP. */
- status = auth_generic_prepare(session, session->sconn->remote_address,
- &session->gensec_security);
- if (!NT_STATUS_IS_OK(status)) {
- goto out;
- }
+ set_current_user_info(session_info->unix_info->sanitized_username,
+ session_info->unix_info->unix_name,
+ session_info->info->domain_name);
- gensec_want_feature(session->gensec_security, GENSEC_FEATURE_SESSION_KEY);
-
- status = gensec_start_mech_by_oid(session->gensec_security, GENSEC_OID_NTLMSSP);
- if (!NT_STATUS_IS_OK(status)) {
- goto out;
- }
+ reload_services(smb2req->sconn, conn_snum_used, true);
- status = gensec_update(session->gensec_security,
- talloc_tos(), NULL,
- secblob_in,
- &chal_out);
+ session->status = NT_STATUS_OK;
+ TALLOC_FREE(session->global->auth_session_info);
+ session->global->auth_session_info = 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->auth_time = timeval_to_nttime(&smb2req->request_time);
+ 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=%llu - %s\n",
+ (unsigned long long)session->compat->vuid,
+ nt_errstr(status)));
+ return NT_STATUS_LOGON_FAILURE;
}
- if (!NT_STATUS_IS_OK(status) &&
- !NT_STATUS_EQUAL(status,
- NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- goto out;
- }
+ conn_clear_vuid_caches(smb2req->sconn, session->compat->vuid);
- *out_security_buffer = spnego_gen_auth_response(smb2req,
- &chal_out,
- status,
- OID_NTLMSSP);
- if (out_security_buffer->data == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto out;
+ if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
+ smb2req->do_signing = true;
}
- *out_session_id = session->vuid;
- out:
+ *out_session_id = session->global->session_wire_id;
- data_blob_free(&secblob_in);
- data_blob_free(&chal_out);
- TALLOC_FREE(kerb_mech);
- if (!NT_STATUS_IS_OK(status) &&
- !NT_STATUS_EQUAL(status,
- NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- TALLOC_FREE(session);
- }
- return status;
+ return NT_STATUS_OK;
}
-static NTSTATUS smbd_smb2_common_ntlmssp_auth_return(struct smbd_smb2_session *session,
- struct smbd_smb2_request *smb2req,
- uint8_t in_security_mode,
- DATA_BLOB in_security_buffer,
- uint16_t *out_session_flags,
- uint64_t *out_session_id)
-{
- bool guest = false;
-
- if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
- lp_server_signing() == SMB_SIGNING_REQUIRED) {
- session->do_signing = true;
- }
-
- if (security_session_user_level(session->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 */
- session->do_signing = false;
- guest = true;
- }
+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;
+ struct smbXsrv_session *session;
+ struct auth_session_info *session_info;
+ uint16_t out_session_flags;
+ DATA_BLOB out_security_buffer;
+ uint64_t out_session_id;
+ /* The following pointer is owned by state->session. */
+ struct smbd_smb2_session_setup_state **pp_self_ref;
+};
- session->session_key = session->session_info->session_key;
+static int pp_self_ref_destructor(struct smbd_smb2_session_setup_state **pp_state)
+{
+ (*pp_state)->session = NULL;
+ /*
+ * To make things clearer, ensure the pp_self_ref
+ * pointer is nulled out. We're never going to
+ * access this again.
+ */
+ (*pp_state)->pp_self_ref = NULL;
+ return 0;
+}
- session->compat_vuser = talloc_zero(session, user_struct);
- if (session->compat_vuser == NULL) {
- TALLOC_FREE(session);
- return NT_STATUS_NO_MEMORY;
- }
- session->compat_vuser->gensec_security = session->gensec_security;
- session->compat_vuser->homes_snum = -1;
- session->compat_vuser->session_info = session->session_info;
- session->compat_vuser->session_keystr = NULL;
- session->compat_vuser->vuid = session->vuid;
- DLIST_ADD(session->sconn->smb1.sessions.validated_users, session->compat_vuser);
+static int smbd_smb2_session_setup_state_destructor(struct smbd_smb2_session_setup_state *state)
+{
+ struct smbXsrv_connection *xconn;
+ struct smbd_smb2_request *preq;
- if (security_session_user_level(session->session_info, NULL) >= SECURITY_USER) {
- session->compat_vuser->homes_snum =
- register_homes_share(session->session_info->unix_info->unix_name);
- }
+ /*
+ * If state->session is not NULL,
+ * we move the session from the session table to the request on failure
+ * so that the error response can be correctly signed, but the session
+ * is then really deleted when the request is done.
+ */
- if (!session_claim(session->sconn, session->compat_vuser)) {
- DEBUG(1, ("smb2: Failed to claim session "
- "for vuid=%d\n",
- session->compat_vuser->vuid));
- TALLOC_FREE(session);
- return NT_STATUS_LOGON_FAILURE;
+ if (state->session == NULL) {
+ return 0;
}
+ state->session->status = NT_STATUS_USER_SESSION_DELETED;
+ state->smb2req->session = talloc_move(state->smb2req, &state->session);
- session->status = NT_STATUS_OK;
+ /*
+ * We own the session now - we don't need the
+ * tag talloced on session that keeps track of session independently.
+ */
+ TALLOC_FREE(state->pp_self_ref);
/*
- * we attach the session to the request
- * so that the response can be signed
+ * We've made this session owned by the current request.
+ * Ensure that any outstanding requests don't also refer
+ * to it.
*/
- smb2req->session = session;
- if (!guest) {
- smb2req->do_signing = true;
+ xconn = state->smb2req->xconn;
+
+ for (preq = xconn->smb2.requests; preq != NULL; preq = preq->next) {
+ if (preq == state->smb2req) {
+ continue;
+ }
+ if (preq->session == state->smb2req->session) {
+ preq->session = NULL;
+ /*
+ * If we no longer have a session we can't
+ * sign or encrypt replies.
+ */
+ preq->do_signing = false;
+ preq->do_encryption = false;
+ }
}
- global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
+ return 0;
+}
+
+static void smbd_smb2_session_setup_gensec_done(struct tevent_req *subreq);
+static void smbd_smb2_session_setup_previous_done(struct tevent_req *subreq);
+static void smbd_smb2_session_setup_auth_return(struct tevent_req *req);
- *out_session_id = session->vuid;
+/************************************************************************
+ We have to tag the state->session pointer with memory talloc'ed
+ on it to ensure it gets NULL'ed out if the underlying struct smbXsrv_session
+ is deleted by shutdown whilst this request is in flight.
+************************************************************************/
+static NTSTATUS tag_state_session_ptr(struct smbd_smb2_session_setup_state *state)
+{
+ state->pp_self_ref = talloc_zero(state->session,
+ struct smbd_smb2_session_setup_state *);
+ if (state->pp_self_ref == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ *state->pp_self_ref = state;
+ talloc_set_destructor(state->pp_self_ref, pp_self_ref_destructor);
return NT_STATUS_OK;
}
-static NTSTATUS smbd_smb2_spnego_auth(struct smbd_smb2_session *session,
+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,
- uint16_t *out_session_flags,
- DATA_BLOB *out_security_buffer,
- uint64_t *out_session_id)
+ uint64_t in_previous_session_id,
+ DATA_BLOB in_security_buffer)
{
- DATA_BLOB auth = data_blob_null;
- DATA_BLOB auth_out = data_blob_null;
+ struct tevent_req *req;
+ struct smbd_smb2_session_setup_state *state;
NTSTATUS status;
+ NTTIME now = timeval_to_nttime(&smb2req->request_time);
+ struct tevent_req *subreq;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smbd_smb2_session_setup_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ 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;
+
+ if (in_flags & SMB2_SESSION_FLAG_BINDING) {
+ if (smb2req->xconn->protocol < PROTOCOL_SMB2_22) {
+ tevent_req_nterror(req, NT_STATUS_REQUEST_NOT_ACCEPTED);
+ return tevent_req_post(req, ev);
+ }
- if (!spnego_parse_auth(talloc_tos(), in_security_buffer, &auth)) {
- TALLOC_FREE(session);
- return NT_STATUS_LOGON_FAILURE;
+ /*
+ * We do not support multi channel.
+ */
+ tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
+ return tevent_req_post(req, ev);
}
- if (auth.data[0] == ASN1_APPLICATION(0)) {
- /* Might be a second negTokenTarg packet */
- DATA_BLOB secblob_in = data_blob_null;
- char *kerb_mech = NULL;
+ talloc_set_destructor(state, smbd_smb2_session_setup_state_destructor);
- status = parse_spnego_mechanisms(talloc_tos(),
- in_security_buffer,
- &secblob_in, &kerb_mech);
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(session);
- return status;
+ if (state->in_session_id == 0) {
+ /* create a new session */
+ status = smbXsrv_session_create(state->smb2req->xconn,
+ now, &state->session);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
+ }
+ } else {
+ if (smb2req->session == NULL) {
+ tevent_req_nterror(req, NT_STATUS_USER_SESSION_DELETED);
+ return tevent_req_post(req, ev);
}
-#ifdef HAVE_KRB5
- if (kerb_mech && ((lp_security()==SEC_ADS) ||
- USE_KERBEROS_KEYTAB) ) {
- status = smbd_smb2_session_setup_krb5(session,
- smb2req,
- in_security_mode,
- &secblob_in,
- kerb_mech,
- out_session_flags,
- out_security_buffer,
- out_session_id);
-
- data_blob_free(&secblob_in);
- TALLOC_FREE(kerb_mech);
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(session);
- }
- return status;
+ state->session = smb2req->session;
+ status = state->session->status;
+ if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED)) {
+ status = NT_STATUS_OK;
+ }
+ if (NT_STATUS_IS_OK(status)) {
+ state->session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+ status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+ TALLOC_FREE(state->session->gensec);
}
-#endif
-
- /* Can't blunder into NTLMSSP auth if we have
- * a krb5 ticket. */
-
- if (kerb_mech) {
- DEBUG(3,("smb2: network "
- "misconfiguration, client sent us a "
- "krb5 ticket and kerberos security "
- "not enabled\n"));
- TALLOC_FREE(session);
- data_blob_free(&secblob_in);
- TALLOC_FREE(kerb_mech);
- return NT_STATUS_LOGON_FAILURE;
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
}
+ }
- data_blob_free(&secblob_in);
+ status = tag_state_session_ptr(state);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
}
- if (session->gensec_security == NULL) {
- status = auth_generic_prepare(session, session->sconn->remote_address,
- &session->gensec_security);
- if (!NT_STATUS_IS_OK(status)) {
- data_blob_free(&auth);
- TALLOC_FREE(session);
- return status;
+ if (state->session->gensec == NULL) {
+ status = auth_generic_prepare(state->session,
+ state->smb2req->xconn->remote_address,
+ &state->session->gensec);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
}
- gensec_want_feature(session->gensec_security, GENSEC_FEATURE_SESSION_KEY);
+ gensec_want_feature(state->session->gensec, GENSEC_FEATURE_SESSION_KEY);
+ gensec_want_feature(state->session->gensec, GENSEC_FEATURE_UNIX_TOKEN);
- status = gensec_start_mech_by_oid(session->gensec_security, GENSEC_OID_NTLMSSP);
- if (!NT_STATUS_IS_OK(status)) {
- data_blob_free(&auth);
- TALLOC_FREE(session);
- return status;
+ status = gensec_start_mech_by_oid(state->session->gensec,
+ GENSEC_OID_SPNEGO);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
}
}
- status = gensec_update(session->gensec_security,
- talloc_tos(), NULL,
- auth,
- &auth_out);
- /* If status is NT_STATUS_OK then we need to get the token.
- * Map to guest is now internal to auth_ntlmssp */
- if (NT_STATUS_IS_OK(status)) {
- status = gensec_session_info(session->gensec_security,
- session,
- &session->session_info);
+ become_root();
+ subreq = gensec_update_send(state, state->ev,
+ state->session->gensec,
+ state->in_security_buffer);
+ unbecome_root();
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
}
+ tevent_req_set_callback(subreq, smbd_smb2_session_setup_gensec_done, req);
- if (!NT_STATUS_IS_OK(status) &&
- !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- data_blob_free(&auth);
- TALLOC_FREE(session);
- return status;
- }
+ return req;
+}
- data_blob_free(&auth);
+static void smbd_smb2_session_setup_gensec_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ struct smbd_smb2_session_setup_state *state =
+ tevent_req_data(req,
+ struct smbd_smb2_session_setup_state);
+ NTSTATUS status;
- *out_security_buffer = spnego_gen_auth_response(smb2req,
- &auth_out, status, NULL);
+ become_root();
+ status = gensec_update_recv(subreq, state,
+ &state->out_security_buffer);
+ unbecome_root();
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) &&
+ !NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return;
+ }
- if (out_security_buffer->data == NULL) {
- TALLOC_FREE(session);
- return NT_STATUS_NO_MEMORY;
+ if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ state->out_session_id = state->session->global->session_wire_id;
+ /* we want to keep the session */
+ state->session = NULL;
+ TALLOC_FREE(state->pp_self_ref);
+ tevent_req_nterror(req, status);
+ return;
+ }
+
+ status = gensec_session_info(state->session->gensec,
+ state->session->global,
+ &state->session_info);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ if ((state->in_previous_session_id != 0) &&
+ (state->session->global->session_wire_id !=
+ state->in_previous_session_id))
+ {
+ subreq = smb2srv_session_close_previous_send(state, state->ev,
+ state->smb2req->xconn,
+ state->session_info,
+ state->in_previous_session_id,
+ state->session->global->session_wire_id);
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq,
+ smbd_smb2_session_setup_previous_done,
+ req);
+ return;
}
- *out_session_id = session->vuid;
+ smbd_smb2_session_setup_auth_return(req);
+}
- if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- return NT_STATUS_MORE_PROCESSING_REQUIRED;
+static void smbd_smb2_session_setup_previous_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ NTSTATUS status;
+
+ status = smb2srv_session_close_previous_recv(subreq);
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
}
- /* We're done - claim the session. */
- return smbd_smb2_common_ntlmssp_auth_return(session,
- smb2req,
- in_security_mode,
- in_security_buffer,
- out_session_flags,
- out_session_id);
+ smbd_smb2_session_setup_auth_return(req);
}
-static NTSTATUS smbd_smb2_raw_ntlmssp_auth(struct smbd_smb2_session *session,
- struct smbd_smb2_request *smb2req,
- uint8_t in_security_mode,
- DATA_BLOB in_security_buffer,
+static void smbd_smb2_session_setup_auth_return(struct tevent_req *req)
+{
+ struct smbd_smb2_session_setup_state *state =
+ tevent_req_data(req,
+ struct smbd_smb2_session_setup_state);
+ NTSTATUS status;
+
+ if (state->session->global->auth_session_info != NULL) {
+ status = smbd_smb2_reauth_generic_return(state->session,
+ state->smb2req,
+ state->session_info,
+ &state->out_session_flags,
+ &state->out_session_id);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+ /* we want to keep the session */
+ state->session = NULL;
+ TALLOC_FREE(state->pp_self_ref);
+ tevent_req_done(req);
+ return;
+ }
+
+ status = smbd_smb2_auth_generic_return(state->session,
+ state->smb2req,
+ state->in_security_mode,
+ state->session_info,
+ &state->out_session_flags,
+ &state->out_session_id);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ /* we want to keep the session */
+ state->session = NULL;
+ TALLOC_FREE(state->pp_self_ref);
+ tevent_req_done(req);
+ return;
+}
+
+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)
{
+ struct smbd_smb2_session_setup_state *state =
+ tevent_req_data(req,
+ struct smbd_smb2_session_setup_state);
NTSTATUS status;
- *out_security_buffer = data_blob_null;
-
- if (session->gensec_security == NULL) {
- status = auth_generic_prepare(session, session->sconn->remote_address,
- &session->gensec_security);
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(session);
- return status;
+ if (tevent_req_is_nterror(req, &status)) {
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ tevent_req_received(req);
+ return nt_status_squash(status);
}
+ } else {
+ status = NT_STATUS_OK;
+ }
- gensec_want_feature(session->gensec_security, GENSEC_FEATURE_SESSION_KEY);
+ *out_session_flags = state->out_session_flags;
+ *out_security_buffer = state->out_security_buffer;
+ *out_session_id = state->out_session_id;
- if (session->sconn->use_gensec_hook) {
- status = gensec_start_mech_by_oid(session->gensec_security, GENSEC_OID_SPNEGO);
- } else {
- status = gensec_start_mech_by_oid(session->gensec_security, GENSEC_OID_NTLMSSP);
- }
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(session);
- return status;
- }
- }
+ talloc_steal(mem_ctx, out_security_buffer->data);
+ tevent_req_received(req);
+ return status;
+}
- /* RAW NTLMSSP */
- status = gensec_update(session->gensec_security,
- smb2req, NULL,
- in_security_buffer,
- out_security_buffer);
+static struct tevent_req *smbd_smb2_logoff_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req);
+static NTSTATUS smbd_smb2_logoff_recv(struct tevent_req *req);
+static void smbd_smb2_request_logoff_done(struct tevent_req *subreq);
- if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- *out_session_id = session->vuid;
- return status;
+NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req)
+{
+ NTSTATUS status;
+ struct tevent_req *subreq = NULL;
+
+ status = smbd_smb2_request_verify_sizes(req, 0x04);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
}
- status = gensec_session_info(session->gensec_security,
- session,
- &session->session_info);
+ subreq = smbd_smb2_logoff_send(req, req->sconn->ev_ctx, req);
+ if (subreq == NULL) {
+ return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+ }
+ tevent_req_set_callback(subreq, smbd_smb2_request_logoff_done, req);
+ /*
+ * Wait a long time before going async on this to allow
+ * requests we're waiting on to finish. Set timeout to 10 secs.
+ */
+ return smbd_smb2_request_pending_queue(req, subreq, 10000000);
+}
+
+static void smbd_smb2_request_logoff_done(struct tevent_req *subreq)
+{
+ struct smbd_smb2_request *smb2req =
+ tevent_req_callback_data(subreq,
+ struct smbd_smb2_request);
+ DATA_BLOB outbody;
+ NTSTATUS status;
+ NTSTATUS error;
+
+ status = smbd_smb2_logoff_recv(subreq);
+ TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(session);
- return status;
+ error = smbd_smb2_request_error(smb2req, status);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(smb2req->xconn,
+ nt_errstr(error));
+ return;
+ }
+ return;
}
- *out_session_id = session->vuid;
- return smbd_smb2_common_ntlmssp_auth_return(session,
- smb2req,
- in_security_mode,
- in_security_buffer,
- out_session_flags,
- out_session_id);
+ outbody = smbd_smb2_generate_outbody(smb2req, 0x04);
+ if (outbody.data == NULL) {
+ error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(smb2req->xconn,
+ nt_errstr(error));
+ return;
+ }
+ return;
+ }
+
+ SSVAL(outbody.data, 0x00, 0x04); /* struct size */
+ SSVAL(outbody.data, 0x02, 0); /* reserved */
+
+ error = smbd_smb2_request_done(smb2req, outbody, NULL);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(smb2req->xconn,
+ nt_errstr(error));
+ return;
+ }
}
-static NTSTATUS smbd_smb2_session_setup(struct smbd_smb2_request *smb2req,
- uint64_t in_session_id,
- uint8_t in_security_mode,
- DATA_BLOB in_security_buffer,
- uint16_t *out_session_flags,
- DATA_BLOB *out_security_buffer,
- uint64_t *out_session_id)
+struct smbd_smb2_logout_state {
+ struct smbd_smb2_request *smb2req;
+ struct tevent_queue *wait_queue;
+};
+
+static void smbd_smb2_logoff_wait_done(struct tevent_req *subreq);
+
+static struct tevent_req *smbd_smb2_logoff_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req)
{
- struct smbd_smb2_session *session;
+ struct tevent_req *req;
+ struct smbd_smb2_logout_state *state;
+ struct tevent_req *subreq;
+ struct smbd_smb2_request *preq;
+ struct smbXsrv_connection *xconn = smb2req->xconn;
- *out_session_flags = 0;
- *out_session_id = 0;
+ req = tevent_req_create(mem_ctx, &state,
+ struct smbd_smb2_logout_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->smb2req = smb2req;
- if (in_session_id == 0) {
- int id;
+ state->wait_queue = tevent_queue_create(state, "logoff_wait_queue");
+ if (tevent_req_nomem(state->wait_queue, req)) {
+ return tevent_req_post(req, ev);
+ }
- /* create a new session */
- session = talloc_zero(smb2req->sconn, struct smbd_smb2_session);
- if (session == NULL) {
- return NT_STATUS_NO_MEMORY;
+ /*
+ * Make sure that no new request will be able to use this session.
+ */
+ smb2req->session->status = NT_STATUS_USER_SESSION_DELETED;
+
+ for (preq = xconn->smb2.requests; preq != NULL; preq = preq->next) {
+ if (preq == smb2req) {
+ /* Can't cancel current request. */
+ continue;
}
- session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
- id = idr_get_new_random(smb2req->sconn->smb2.sessions.idtree,
- session,
- smb2req->sconn->smb2.sessions.limit);
- if (id == -1) {
- return NT_STATUS_INSUFFICIENT_RESOURCES;
+ if (preq->session != smb2req->session) {
+ /* Request on different session. */
+ continue;
}
- session->vuid = id;
- session->tcons.idtree = idr_init(session);
- if (session->tcons.idtree == NULL) {
- return NT_STATUS_NO_MEMORY;
+ /*
+ * Never cancel anything in a compound
+ * request. Way too hard to deal with
+ * the result.
+ */
+ if (!preq->compound_related && preq->subreq != NULL) {
+ tevent_req_cancel(preq->subreq);
}
- session->tcons.limit = 0x0000FFFE;
- session->tcons.list = NULL;
-
- DLIST_ADD_END(smb2req->sconn->smb2.sessions.list, session,
- struct smbd_smb2_session *);
- session->sconn = smb2req->sconn;
- talloc_set_destructor(session, smbd_smb2_session_destructor);
- } else {
- void *p;
- /* lookup an existing session */
- p = idr_find(smb2req->sconn->smb2.sessions.idtree, in_session_id);
- if (p == NULL) {
- return NT_STATUS_USER_SESSION_DELETED;
+ /*
+ * Now wait until the request is finished.
+ *
+ * We don't set a callback, as we just want to block the
+ * wait queue and the talloc_free() of the request will
+ * remove the item from the wait queue.
+ */
+ subreq = tevent_queue_wait_send(preq, ev, state->wait_queue);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
}
- session = talloc_get_type_abort(p, struct smbd_smb2_session);
- }
-
- if (NT_STATUS_IS_OK(session->status)) {
- return NT_STATUS_REQUEST_NOT_ACCEPTED;
- }
-
- /* Handle either raw NTLMSSP or hand off the whole blob to
- * GENSEC. The processing at this layer is essentially
- * identical regardless. In particular, both rely only on the
- * status code (not the contents of the packet) and do not
- * wrap the result */
- if (session->sconn->use_gensec_hook
- || ntlmssp_blob_matches_magic(&in_security_buffer)) {
- return smbd_smb2_raw_ntlmssp_auth(session,
- smb2req,
- in_security_mode,
- in_security_buffer,
- out_session_flags,
- out_security_buffer,
- out_session_id);
- } else if (in_security_buffer.data[0] == ASN1_APPLICATION(0)) {
- return smbd_smb2_spnego_negotiate(session,
- smb2req,
- in_security_mode,
- in_security_buffer,
- out_session_flags,
- out_security_buffer,
- out_session_id);
- } else if (in_security_buffer.data[0] == ASN1_CONTEXT(1)) {
- return smbd_smb2_spnego_auth(session,
- smb2req,
- in_security_mode,
- in_security_buffer,
- out_session_flags,
- out_security_buffer,
- out_session_id);
- }
-
- /* Unknown packet type. */
- DEBUG(1,("Unknown packet type %u in smb2 sessionsetup\n",
- (unsigned int)in_security_buffer.data[0] ));
- TALLOC_FREE(session);
- return NT_STATUS_LOGON_FAILURE;
+ }
+
+ /*
+ * Now we add our own waiter to the end of the queue,
+ * this way we get notified when all pending requests are finished
+ * and send to the socket.
+ */
+ subreq = tevent_queue_wait_send(state, ev, state->wait_queue);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smbd_smb2_logoff_wait_done, req);
+
+ return req;
}
-NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req)
+static void smbd_smb2_logoff_wait_done(struct tevent_req *subreq)
{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct smbd_smb2_logout_state *state = tevent_req_data(
+ req, struct smbd_smb2_logout_state);
NTSTATUS status;
- DATA_BLOB outbody;
- status = smbd_smb2_request_verify_sizes(req, 0x04);
- if (!NT_STATUS_IS_OK(status)) {
- return smbd_smb2_request_error(req, status);
- }
+ tevent_queue_wait_recv(subreq);
+ TALLOC_FREE(subreq);
/*
- * TODO: cancel all outstanding requests on the session
- * and delete all tree connections.
+ * As we've been awoken, we may have changed
+ * uid in the meantime. Ensure we're still
+ * root (SMB2_OP_LOGOFF has .as_root = true).
*/
- smbd_smb2_session_destructor(req->session);
+ change_to_root_user();
+
+ status = smbXsrv_session_logoff(state->smb2req->session);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
/*
* we may need to sign the response, so we need to keep
* the session until the response is sent to the wire.
*/
- talloc_steal(req, req->session);
-
- outbody = data_blob_talloc(req->out.vector, NULL, 0x04);
- if (outbody.data == NULL) {
- return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
- }
+ talloc_steal(state->smb2req, state->smb2req->session);
- SSVAL(outbody.data, 0x00, 0x04); /* struct size */
- SSVAL(outbody.data, 0x02, 0); /* reserved */
+ tevent_req_done(req);
+}
- return smbd_smb2_request_done(req, outbody, NULL);
+static NTSTATUS smbd_smb2_logoff_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
}