*/
#include "includes.h"
+#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
-#include "../libcli/auth/spnego.h"
-#include "../libcli/auth/ntlmssp.h"
-#include "ntlmssp_wrap.h"
-
-static NTSTATUS smbd_smb2_session_setup(struct smbd_smb2_request *smb2req,
+#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);
+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;
- size_t expected_body_size = 0x19;
- size_t body_size;
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 *)smb2req->in.vector[i+0].iov_base;
-
- if (smb2req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
- return smbd_smb2_request_error(smb2req, 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 = SMBD_SMB2_IN_HDR_PTR(smb2req);
+ inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
- inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
-
- body_size = SVAL(inbody, 0x00);
- if (body_size != expected_body_size) {
- return smbd_smb2_request_error(smb2req, 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))) {
+ 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;
+ 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(smb2req, 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 *)smb2req->out.vector[i].iov_base;
+ outhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
outbody = data_blob_talloc(smb2req->out.vector, NULL, 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->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(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);
- }
-
- 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 setup_ntlmssp_server_info(struct smbd_smb2_session *session,
- NTSTATUS status)
-{
- if (NT_STATUS_IS_OK(status)) {
- status = auth_ntlmssp_steal_server_info(session,
- session->auth_ntlmssp_state,
- &session->server_info);
- } else {
- /* Note that this server_info won't have a session
- * key. But for map to guest, that's exactly the right
- * thing - we can't reasonably guess the key the
- * client wants, as the password was wrong */
- status = do_map_to_guest(status,
- &session->server_info,
- auth_ntlmssp_get_username(session->auth_ntlmssp_state),
- auth_ntlmssp_get_domain(session->auth_ntlmssp_state));
+ 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;
}
- return status;
}
-#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 *client = NULL;
- char *p = NULL;
- char *domain = NULL;
- struct passwd *pw = NULL;
NTSTATUS status;
- fstring user;
- fstring real_username;
- fstring tmp;
- bool username_was_mapped = false;
- bool map_domainuser_to_guest = false;
-
- if (!spnego_parse_krb5_wrap(talloc_tos(), *secblob, &ticket, tok_id)) {
- status = NT_STATUS_LOGON_FAILURE;
- goto fail;
- }
-
- status = ads_verify_ticket(smb2req, lp_realm(), 0, &ticket,
- &client, &logon_info, &ap_rep,
- &session_key, true);
+ bool guest = false;
+ uint8_t session_key[16];
+ struct smbXsrv_session *x = session;
+ struct smbXsrv_connection *conn = session->connection;
- 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;
- }
- goto fail;
+ if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
+ lp_server_signing() == SMB_SIGNING_REQUIRED) {
+ x->global->signing_required = true;
}
- DEBUG(3,("smb2: Ticket name is [%s]\n", client));
-
- p = strchr_m(client, '@');
- if (!p) {
- DEBUG(3,("smb2: %s Doesn't look like a valid principal\n",
- client));
- status = NT_STATUS_LOGON_FAILURE;
- goto fail;
+ if (lp_smb_encrypt(-1) == SMB_SIGNING_REQUIRED) {
+ x->global->encryption_required = true;
}
- *p = 0;
-
- /* save the PAC data if we have it */
-
- if (logon_info) {
- netsamlogon_cache_store(client, &logon_info->info3);
+ 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 (!strequal(p+1, lp_realm())) {
- DEBUG(3,("smb2: Ticket for foreign realm %s@%s\n", client, p+1));
- if (!lp_allow_trusted_domains()) {
- status = NT_STATUS_LOGON_FAILURE;
- goto fail;
- }
+ if (guest && x->global->encryption_required) {
+ DEBUG(1,("reject guest session as encryption is required\n"));
+ return NT_STATUS_ACCESS_DENIED;
}
- /* this gives a fully qualified user name (ie. with full realm).
- that leads to very long usernames, but what else can we do? */
-
- domain = p+1;
-
- if (logon_info && logon_info->info3.base.domain.string) {
- domain = talloc_strdup(talloc_tos(),
- logon_info->info3.base.domain.string);
- if (!domain) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
+ if (!(conn->smb2.server.capabilities & SMB2_CAP_ENCRYPTION)) {
+ if (x->global->encryption_required) {
+ DEBUG(1,("reject session with dialect[0x%04X] "
+ "as encryption is required\n",
+ conn->smb2.server.dialect));
+ return NT_STATUS_ACCESS_DENIED;
}
- DEBUG(10, ("smb2: Mapped to [%s] (using PAC)\n", domain));
- } else {
-
- /* If we have winbind running, we can (and must) shorten the
- username by using the short netbios name. Otherwise we will
- have inconsistent user names. With Kerberos, we get the
- fully qualified realm, with ntlmssp we get the short
- name. And even w2k3 does use ntlmssp if you for example
- connect to an ip address. */
-
- wbcErr wbc_status;
- struct wbcDomainInfo *info = NULL;
-
- DEBUG(10, ("smb2: Mapping [%s] to short name\n", domain));
-
- wbc_status = wbcDomainInfo(domain, &info);
-
- if (WBC_ERROR_IS_OK(wbc_status)) {
- domain = talloc_strdup(talloc_tos(), info->short_name);
+ }
- wbcFreeMemory(info);
- if (!domain) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
- }
- DEBUG(10, ("smb2: Mapped to [%s] (using Winbind)\n", domain));
- } else {
- DEBUG(3, ("smb2: Could not find short name: %s\n",
- wbcErrorString(wbc_status)));
- }
+ if (x->global->encryption_required) {
+ *out_session_flags |= SMB2_SESSION_FLAG_ENCRYPT_DATA;
}
- /* We have to use fstring for this - map_username requires it. */
- fstr_sprintf(user, "%s%c%s", domain, *lp_winbind_separator(), client);
+ ZERO_STRUCT(session_key);
+ memcpy(session_key, session_info->session_key.data,
+ MIN(session_info->session_key.length, sizeof(session_key)));
- /* lookup the passwd struct, create a new user if necessary */
+ 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;
+ }
- username_was_mapped = map_username(user);
+ 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");
- pw = smb_getpwnam(talloc_tos(), user, real_username, true );
- if (pw) {
- /* if a real user check pam account restrictions */
- /* only really perfomed if "obey pam restriction" is true */
- /* do this before an eventual mapping to guest occurs */
- status = smb_pam_accountcheck(pw->pw_name);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1,("smb2: PAM account restriction "
- "prevents user login\n"));
- goto fail;
- }
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ x->global->signing_key.data);
}
- if (!pw) {
-
- /* this was originally the behavior of Samba 2.2, if a user
- did not have a local uid but has been authenticated, then
- map them to a guest account */
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCCM");
+ const DATA_BLOB context = data_blob_string_const_null("ServerIn ");
- if (lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID){
- map_domainuser_to_guest = true;
- fstrcpy(user,lp_guestaccount());
- pw = smb_getpwnam(talloc_tos(), user, real_username, true );
+ 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;
}
- /* extra sanity check that the guest account is valid */
-
- if (!pw) {
- DEBUG(1,("smb2: Username %s is invalid on this system\n",
- user));
- status = NT_STATUS_LOGON_FAILURE;
- goto fail;
- }
+ smb2_key_derivation(session_key, sizeof(session_key),
+ label.data, label.length,
+ context.data, context.length,
+ x->global->decryption_key.data);
}
- /* setup the string used by %U */
-
- sub_set_smb_name(real_username);
- reload_services(true);
-
- if (map_domainuser_to_guest) {
- make_server_info_guest(session, &session->server_info);
- } else if (logon_info) {
- /* pass the unmapped username here since map_username()
- will be called again from inside make_server_info_info3() */
-
- status = make_server_info_info3(session,
- client,
- domain,
- &session->server_info,
- &logon_info->info3);
- if (!NT_STATUS_IS_OK(status) ) {
- DEBUG(1,("smb2: make_server_info_info3 failed: %s!\n",
- nt_errstr(status)));
- goto fail;
- }
-
- } else {
- /*
- * We didn't get a PAC, we have to make up the user
- * ourselves. Try to ask the pdb backend to provide
- * SID consistency with ntlmssp session setup
- */
- struct samu *sampass;
- /* The stupid make_server_info_XX functions here
- don't take a talloc context. */
- struct auth_serversupplied_info *tmp_server_info = NULL;
-
- sampass = samu_new(talloc_tos());
- if (sampass == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
- }
+ if (conn->protocol >= PROTOCOL_SMB2_24) {
+ const DATA_BLOB label = data_blob_string_const_null("SMB2AESCCM");
+ const DATA_BLOB context = data_blob_string_const_null("ServerOut");
- if (pdb_getsampwnam(sampass, real_username)) {
- DEBUG(10, ("smb2: found user %s in passdb, calling "
- "make_server_info_sam\n", real_username));
- status = make_server_info_sam(&tmp_server_info, sampass);
- TALLOC_FREE(sampass);
- } else {
- /*
- * User not in passdb, make it up artificially
- */
- TALLOC_FREE(sampass);
- DEBUG(10, ("smb2: didn't find user %s in passdb, calling "
- "make_server_info_pw\n", real_username));
- status = make_server_info_pw(&tmp_server_info,
- real_username,
- pw);
+ 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;
}
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1,("smb2: make_server_info_[sam|pw] failed: %s!\n",
- nt_errstr(status)));
- goto fail;
- }
-
- /* Steal tmp_server_info into the session->server_info
- pointer. */
- session->server_info = talloc_move(session, &tmp_server_info);
-
- /* make_server_info_pw does not set the domain. Without this
- * we end up with the local netbios name in substitutions for
- * %D. */
-
- if (session->server_info->info3 != NULL) {
- session->server_info->info3->base.domain.string =
- talloc_strdup(session->server_info->info3, domain);
- }
+ 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;
}
- session->server_info->nss_token |= username_was_mapped;
+ 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;
+ }
- /* we need to build the token for the user. make_server_info_guest()
- already does this */
+ 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");
- if (!session->server_info->ptok ) {
- status = create_local_token(session->server_info);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10,("smb2: failed to create local token: %s\n",
- nt_errstr(status)));
- goto fail;
- }
+ 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_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
- lp_server_signing() == Required) {
- session->do_signing = true;
+ 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->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;
+ 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;
}
- data_blob_free(&session->server_info->user_session_key);
- session->server_info->user_session_key =
- data_blob_talloc(
- session->server_info,
- session_key.data,
- session_key.length);
- if (session_key.length > 0) {
- if (session->server_info->user_session_key.data == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
- }
+ session->compat = talloc_zero(session, struct user_struct);
+ if (session->compat == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
- session->session_key = session->server_info->user_session_key;
+ 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++;
- session->compat_vuser = talloc_zero(session, user_struct);
- if (session->compat_vuser == NULL) {
- status = NT_STATUS_NO_MEMORY;
- goto fail;
- }
- session->compat_vuser->auth_ntlmssp_state = NULL;
- 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);
-
- /* This is a potentially untrusted username */
- alpha_strcpy(tmp,
- client,
- ". _-$",
- sizeof(tmp));
- session->server_info->sanitized_username = talloc_strdup(
- session->server_info, tmp);
-
- if (!session->server_info->guest) {
- session->compat_vuser->homes_snum =
- register_homes_share(session->server_info->unix_name);
+ if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
+ session->compat->homes_snum =
+ register_homes_share(session_info->unix_info->unix_name);
}
- if (!session_claim(sconn_server_id(session->sconn),
- session->compat_vuser)) {
+ if (!session_claim(smb2req->sconn, session)) {
DEBUG(1, ("smb2: Failed to claim session "
- "for vuid=%d\n",
- session->compat_vuser->vuid));
- goto fail;
+ "for vuid=%llu\n",
+ (unsigned long long)session->compat->vuid));
+ return NT_STATUS_LOGON_FAILURE;
}
+ 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->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;
+ }
/*
* we attach the session to the request
* so that the response can be signed
*/
smb2req->session = session;
- if (session->do_signing) {
+ if (!guest) {
smb2req->do_signing = true;
}
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;
+ struct smbXsrv_connection *conn = session->connection;
- /* Ensure we have no old NTLM state around. */
- TALLOC_FREE(session->auth_ntlmssp_state);
-
- 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_ntlmssp_start(&session->auth_ntlmssp_state);
- 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);
- status = auth_ntlmssp_update(session->auth_ntlmssp_state,
- secblob_in,
- &chal_out);
- }
+ reload_services(smb2req->sconn, conn_snum_used, true);
- if (!NT_STATUS_IS_OK(status) &&
- !NT_STATUS_EQUAL(status,
- NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- goto 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->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;
}
- *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;
- }
- *out_session_id = session->vuid;
+ conn_clear_vuid_caches(conn->sconn, session->compat->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->auth_ntlmssp_state);
- 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)
-{
- fstring tmp;
-
- if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
- lp_server_signing() == Required) {
- session->do_signing = true;
- }
-
- if (session->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->session_key = session->server_info->user_session_key;
-
- session->compat_vuser = talloc_zero(session, user_struct);
- if (session->compat_vuser == NULL) {
- TALLOC_FREE(session->auth_ntlmssp_state);
- 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);
-
- /* This is a potentially untrusted username */
- alpha_strcpy(tmp,
- auth_ntlmssp_get_username(session->auth_ntlmssp_state),
- ". _-$",
- sizeof(tmp));
- session->server_info->sanitized_username = talloc_strdup(
- session->server_info, tmp);
-
- if (!session->compat_vuser->server_info->guest) {
- session->compat_vuser->homes_snum =
- register_homes_share(session->server_info->unix_name);
- }
-
- if (!session_claim(sconn_server_id(session->sconn),
- session->compat_vuser)) {
- DEBUG(1, ("smb2: Failed to claim session "
- "for vuid=%d\n",
- session->compat_vuser->vuid));
- TALLOC_FREE(session->auth_ntlmssp_state);
- TALLOC_FREE(session);
- return NT_STATUS_LOGON_FAILURE;
- }
-
+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->status = NT_STATUS_OK;
+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;
+}
+static int smbd_smb2_session_setup_state_destructor(struct smbd_smb2_session_setup_state *state)
+{
/*
- * we attach the session to the request
- * so that the response can be signed
+ * if state->session is not NULL,
+ * we remove the session on failure
*/
- smb2req->session = session;
- if (session->do_signing) {
- smb2req->do_signing = true;
- }
+ TALLOC_FREE(state->session);
+ return 0;
+}
- global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
+static void smbd_smb2_session_setup_gensec_done(struct tevent_req *subreq);
+static void smbd_smb2_session_setup_previous_done(struct tevent_req *subreq);
- *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->sconn->conn->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;
-
- status = parse_spnego_mechanisms(talloc_tos(),
- in_security_buffer,
- &secblob_in, &kerb_mech);
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(session);
- return status;
- }
+ talloc_set_destructor(state, smbd_smb2_session_setup_state_destructor);
-#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;
+ if (state->in_session_id == 0) {
+ /* create a new session */
+ status = smbXsrv_session_create(state->smb2req->sconn->conn,
+ now, &state->session);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
}
-#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;
+ } else {
+ status = smb2srv_session_lookup(state->smb2req->sconn->conn,
+ state->in_session_id, now,
+ &state->session);
+ if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED)) {
+ status = NT_STATUS_OK;
}
-
- data_blob_free(&secblob_in);
- }
-
- if (session->auth_ntlmssp_state == NULL) {
- status = auth_ntlmssp_start(&session->auth_ntlmssp_state);
- if (!NT_STATUS_IS_OK(status)) {
- data_blob_free(&auth);
- TALLOC_FREE(session);
- return status;
+ 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);
+ }
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
}
}
- status = auth_ntlmssp_update(session->auth_ntlmssp_state,
- auth,
- &auth_out);
- if (!NT_STATUS_IS_OK(status) &&
- !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- status = setup_ntlmssp_server_info(session, status);
+ status = tag_state_session_ptr(state);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
}
- if (!NT_STATUS_IS_OK(status) &&
- !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- TALLOC_FREE(session->auth_ntlmssp_state);
- data_blob_free(&auth);
- TALLOC_FREE(session);
- return status;
- }
-
- data_blob_free(&auth);
+ if (state->session->gensec == NULL) {
+ status = auth_generic_prepare(state->session,
+ state->session->connection->remote_address,
+ &state->session->gensec);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
+ }
- *out_security_buffer = spnego_gen_auth_response(smb2req,
- &auth_out, status, NULL);
+ gensec_want_feature(state->session->gensec, GENSEC_FEATURE_SESSION_KEY);
+ gensec_want_feature(state->session->gensec, GENSEC_FEATURE_UNIX_TOKEN);
- if (out_security_buffer->data == NULL) {
- TALLOC_FREE(session->auth_ntlmssp_state);
- TALLOC_FREE(session);
- return NT_STATUS_NO_MEMORY;
+ status = gensec_start_mech_by_oid(state->session->gensec,
+ GENSEC_OID_SPNEGO);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
+ }
}
- *out_session_id = session->vuid;
-
- if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ 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);
- /* 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);
+ 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,
- uint16_t *out_session_flags,
- DATA_BLOB *out_security_buffer,
- uint64_t *out_session_id)
+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;
- DATA_BLOB secblob_out = data_blob_null;
- 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;
- }
- }
-
- /* RAW NTLMSSP */
- status = auth_ntlmssp_update(session->auth_ntlmssp_state,
- in_security_buffer,
- &secblob_out);
-
- if (NT_STATUS_IS_OK(status) ||
- NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- *out_security_buffer = data_blob_talloc(smb2req,
- secblob_out.data,
- secblob_out.length);
- if (secblob_out.data && out_security_buffer->data == NULL) {
- TALLOC_FREE(session->auth_ntlmssp_state);
- TALLOC_FREE(session);
- return NT_STATUS_NO_MEMORY;
- }
+ 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 (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- *out_session_id = session->vuid;
- return status;
- }
+ state->out_session_id = state->session->global->session_wire_id;
+ /* we want to keep the session */
+ 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->session->connection,
+ 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;
+ }
+
+ 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 */
+ 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 */
+ TALLOC_FREE(state->pp_self_ref);
+ tevent_req_done(req);
+ return;
+}
- status = setup_ntlmssp_server_info(session, status);
+static void smbd_smb2_session_setup_previous_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;
- if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(session->auth_ntlmssp_state);
- TALLOC_FREE(session);
- return status;
+ status = smb2srv_session_close_previous_recv(subreq);
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ 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);
+
+ 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 */
+ 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 */
+ TALLOC_FREE(state->pp_self_ref);
+ tevent_req_done(req);
+ 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,
+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 *session;
-
- *out_session_flags = 0;
- *out_session_id = 0;
-
- if (in_session_id == 0) {
- int id;
-
- /* create a new session */
- session = talloc_zero(smb2req->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(smb2req->sconn->smb2.sessions.idtree,
- session,
- smb2req->sconn->smb2.sessions.limit);
- if (id == -1) {
- return NT_STATUS_INSUFFICIENT_RESOURCES;
- }
- session->vuid = id;
+ struct smbd_smb2_session_setup_state *state =
+ tevent_req_data(req,
+ struct smbd_smb2_session_setup_state);
+ NTSTATUS status;
- session->tcons.idtree = idr_init(session);
- if (session->tcons.idtree == NULL) {
- return NT_STATUS_NO_MEMORY;
+ 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);
}
- 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;
- }
- session = talloc_get_type_abort(p, struct smbd_smb2_session);
+ status = NT_STATUS_OK;
}
- if (NT_STATUS_IS_OK(session->status)) {
- return NT_STATUS_REQUEST_NOT_ACCEPTED;
- }
+ *out_session_flags = state->out_session_flags;
+ *out_security_buffer = state->out_security_buffer;
+ *out_session_id = state->out_session_id;
- 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);
- } else if (strncmp((char *)(in_security_buffer.data), "NTLMSSP", 7) == 0) {
- return smbd_smb2_raw_ntlmssp_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->auth_ntlmssp_state);
- TALLOC_FREE(session);
- return NT_STATUS_LOGON_FAILURE;
-}
-
-NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req)
-{
- 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;
-
- inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
-
- in_session_id = BVAL(inhdr, SMB2_HDR_SESSION_ID);
-
- if (in_session_id == (0xFFFFFFFFFFFFFFFFLL)) {
- if (req->async) {
- /*
- * async request - fill in session_id from
- * already setup request out.vector[].iov_base.
- */
- outhdr = (const uint8_t *)req->out.vector[i].iov_base;
- in_session_id = BVAL(outhdr, SMB2_HDR_SESSION_ID);
- } else if (i > 2) {
- /*
- * Chained request - fill in session_id from
- * the previous request out.vector[].iov_base.
- */
- outhdr = (const uint8_t *)req->out.vector[i-3].iov_base;
- in_session_id = BVAL(outhdr, SMB2_HDR_SESSION_ID);
- chained_fixup = true;
- }
- }
-
- /* 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 (!NT_STATUS_IS_OK(session->status)) {
- return NT_STATUS_ACCESS_DENIED;
- }
-
- set_current_user_info(session->server_info->sanitized_username,
- session->server_info->unix_name,
- session->server_info->info3->base.domain.string);
-
- req->session = session;
-
- 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);
- }
- return NT_STATUS_OK;
+ 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)
{
- const uint8_t *inbody;
- int i = req->current_idx;
+ NTSTATUS status;
DATA_BLOB outbody;
- size_t expected_body_size = 0x04;
- size_t body_size;
-
- if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
- }
- 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);
+ 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);
+ status = smbXsrv_session_logoff(req->session);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("smbd_smb2_request_process_logoff: "
+ "smbXsrv_session_logoff() failed: %s\n",
+ nt_errstr(status)));
+ /*
+ * If we hit this case, there is something completely
+ * wrong, so we better disconnect the transport connection.
+ */
+ return status;
+ }
+
/*
* 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 / kai / samba.git / blobdiff