diff options
Diffstat (limited to 'source3/smbd')
| -rw-r--r-- | source3/smbd/files.c | 18 | ||||
| -rw-r--r-- | source3/smbd/globals.h | 5 | ||||
| -rw-r--r-- | source3/smbd/smb2_server.c | 11 | ||||
| -rw-r--r-- | source3/smbd/smb2_sesssetup.c | 18 | ||||
| -rw-r--r-- | source3/smbd/smb2_tcon.c | 4 |
5 files changed, 55 insertions, 1 deletions
diff --git a/source3/smbd/files.c b/source3/smbd/files.c index 6aad76a..42bb323 100644 --- a/source3/smbd/files.c +++ b/source3/smbd/files.c @@ -1312,6 +1312,24 @@ next: } if (fd == -1) { + /* + * vfs_widelink widelink_openat will update stat for fsp + * and return ELOOP for non-existing link, we can report + * the link here and let calling code decide what to do. + */ + if ((errno == ELOOP) && S_ISLNK(fsp->fsp_name->st.st_ex_mode)) { + status = create_open_symlink_err(mem_ctx, + dirfsp, + &rel_fname, + &symlink_err); + if (NT_STATUS_IS_OK(status)) { + status = NT_STATUS_STOPPED_ON_SYMLINK; + } else { + DBG_ERR("read_symlink_reparse failed: %s\n", + nt_errstr(status)); + } + goto fail; + } status = map_nt_error_from_unix(errno); DBG_DEBUG("SMB_VFS_OPENAT() failed: %s\n", strerror(errno)); diff --git a/source3/smbd/globals.h b/source3/smbd/globals.h index 4928d1f..a954499 100644 --- a/source3/smbd/globals.h +++ b/source3/smbd/globals.h @@ -522,6 +522,11 @@ struct smbXsrv_connection { } smbtorture; bool signing_mandatory; + /* + * This is ConstrainedConnection in MS-SMB2, + * but with reversed value... + */ + bool got_authenticated_session; } smb2; }; diff --git a/source3/smbd/smb2_server.c b/source3/smbd/smb2_server.c index afb86ab..5b83d4d 100644 --- a/source3/smbd/smb2_server.c +++ b/source3/smbd/smb2_server.c @@ -494,6 +494,17 @@ static NTSTATUS smbd_smb2_inbuf_parse_compound(struct smbXsrv_connection *xconn, goto inval; } + if (!xconn->smb2.got_authenticated_session) { + D_INFO("Got SMB2_TRANSFORM header, " + "but not no authenticated session yet " + "client[%s] server[%s]\n", + tsocket_address_string( + xconn->remote_address, talloc_tos()), + tsocket_address_string( + xconn->local_address, talloc_tos())); + goto inval; + } + if (len < SMB2_TF_HDR_SIZE) { DEBUG(1, ("%d bytes left, expected at least %d\n", (int)len, SMB2_TF_HDR_SIZE)); diff --git a/source3/smbd/smb2_sesssetup.c b/source3/smbd/smb2_sesssetup.c index ac71e55..d3b21ea 100644 --- a/source3/smbd/smb2_sesssetup.c +++ b/source3/smbd/smb2_sesssetup.c @@ -271,6 +271,13 @@ static NTSTATUS smbd_smb2_auth_generic_return(struct smbXsrv_session *session, x->global->signing_flags &= ~SMBXSRV_SIGNING_REQUIRED; /* we map anonymous to guest internally */ guest = true; + } else { + /* + * Remember we got one authenticated session on the connection + * in order to allow SMB3 decryption to happen + * (sadly even for future anonymous connections). + */ + xconn->smb2.got_authenticated_session = true; } if (guest && (x->global->encryption_flags & SMBXSRV_ENCRYPTION_REQUIRED)) { @@ -288,7 +295,10 @@ static NTSTATUS smbd_smb2_auth_generic_return(struct smbXsrv_session *session, } x->global->signing_algo = xconn->smb2.server.sign_algo; x->global->encryption_cipher = xconn->smb2.server.cipher; - if (guest) { + if (*out_session_flags & SMB2_SESSION_FLAG_IS_GUEST) { + /* + * A fallback to guest can't do any encryption + */ x->global->encryption_cipher = SMB2_ENCRYPTION_NONE; } @@ -642,6 +652,12 @@ static NTSTATUS smbd_smb2_bind_auth_return(struct smbXsrv_session *session, return NT_STATUS_LOGON_FAILURE; } + /* + * Remember we got one authenticated session on the connection + * in order to allow SMB3 decryption to happen + */ + xconn->smb2.got_authenticated_session = true; + *out_session_id = session->global->session_wire_id; return NT_STATUS_OK; diff --git a/source3/smbd/smb2_tcon.c b/source3/smbd/smb2_tcon.c index b228036..20d8967 100644 --- a/source3/smbd/smb2_tcon.c +++ b/source3/smbd/smb2_tcon.c @@ -331,6 +331,10 @@ static NTSTATUS smbd_smb2_tree_connect(struct smbd_smb2_request *req, } } + if (guest_session) { + /* make sure we don't ask for optional encryption */ + encryption_desired = false; + } if (encryption_desired) { encryption_flags |= SMBXSRV_ENCRYPTION_DESIRED; } |