--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+ error packet handling
+ Copyright (C) Andrew Tridgell 1992-1998
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+/* From lib/error.c */
+extern struct unix_error_map unix_dos_nt_errmap[];
+
+extern uint32 global_client_caps;
+/* these can be set by some functions to override the error codes */
+static int override_ERR_class;
+static uint32 override_ERR_code;
+static NTSTATUS override_ERR_ntstatus;
+
+/****************************************************************************
+ Setting eclass and ecode only and status to NT_STATUS_INVALID forces DOS errors.
+ Setting status only and eclass and ecode to -1 forces NT errors.
+****************************************************************************/
+
+void set_saved_error_triple(int eclass, int ecode, NTSTATUS status)
+{
+ override_ERR_class = eclass;
+ override_ERR_code = ecode;
+ override_ERR_ntstatus = status;
+}
+
+void set_saved_ntstatus(NTSTATUS status)
+{
+ uint8 tmp_eclass; /* Hmmm. override_ERR_class is not uint8... */
+ override_ERR_ntstatus = status;
+ ntstatus_to_dos(status, &tmp_eclass, &override_ERR_code);
+ override_ERR_class = tmp_eclass;
+
+}
+
+/****************************************************************************
+ Return the current settings of the error triple. Return True if any are set.
+****************************************************************************/
+
+NTSTATUS get_saved_ntstatus(void)
+{
+ return override_ERR_ntstatus;
+}
+
+/****************************************************************************
+ Create an error packet from a cached error.
+****************************************************************************/
+
+int cached_error_packet(char *outbuf,files_struct *fsp,int line,const char *file)
+{
+ write_bmpx_struct *wbmpx = fsp->wbmpx_ptr;
+ int32 eclass = wbmpx->wr_errclass;
+ int32 err = wbmpx->wr_error;
+ NTSTATUS ntstatus = wbmpx->wr_status;
+
+ /* We can now delete the auxiliary struct */
+ SAFE_FREE(fsp->wbmpx_ptr);
+ return error_packet(outbuf,eclass,err,ntstatus,line,file);
+}
+
+/****************************************************************************
+ Create an error packet from errno.
+****************************************************************************/
+
+int unix_error_packet(char *outbuf,int def_class,uint32 def_code, NTSTATUS def_status, int line, const char *file)
+{
+ int eclass=def_class;
+ int ecode=def_code;
+ NTSTATUS ntstatus = def_status;
+ int i=0;
+
+ if (errno != 0) {
+ DEBUG(3,("unix_error_packet: error string = %s\n",strerror(errno)));
+
+ while (unix_dos_nt_errmap[i].dos_class != 0) {
+ if (unix_dos_nt_errmap[i].unix_error == errno) {
+ eclass = unix_dos_nt_errmap[i].dos_class;
+ ecode = unix_dos_nt_errmap[i].dos_code;
+ ntstatus = unix_dos_nt_errmap[i].nt_error;
+ break;
+ }
+ i++;
+ }
+ }
+
+ return error_packet(outbuf,eclass,ecode,ntstatus,line,file);
+}
+
+
+/****************************************************************************
+ Create an error packet. Normally called using the ERROR() macro.
+ Setting eclass and ecode only and status to NT_STATUS_OK forces DOS errors.
+ Setting status only and eclass and ecode to zero forces NT errors.
+ If the override errors are set they take precedence over any passed in values.
+****************************************************************************/
+
+int error_packet(char *outbuf, uint8 eclass, uint32 ecode, NTSTATUS ntstatus, int line, const char *file)
+{
+ int outsize = set_message(outbuf,0,0,True);
+ BOOL force_nt_status = False;
+ BOOL force_dos_status = False;
+
+ if (override_ERR_class != SMB_SUCCESS || !NT_STATUS_IS_OK(override_ERR_ntstatus)) {
+ eclass = override_ERR_class;
+ ecode = override_ERR_code;
+ ntstatus = override_ERR_ntstatus;
+ override_ERR_class = SMB_SUCCESS;
+ override_ERR_code = 0;
+ override_ERR_ntstatus = NT_STATUS_OK;
+ }
+
+ if (eclass == (uint8)-1) {
+ force_nt_status = True;
+ } else if (NT_STATUS_IS_INVALID(ntstatus)) {
+ force_dos_status = True;
+ }
+
+ if (force_nt_status || (!force_dos_status && lp_nt_status_support() && (global_client_caps & CAP_STATUS32))) {
+ /* We're returning an NT error. */
+ if (NT_STATUS_V(ntstatus) == 0 && eclass) {
+ ntstatus = dos_to_ntstatus(eclass, ecode);
+ }
+ SIVAL(outbuf,smb_rcls,NT_STATUS_V(ntstatus));
+ SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2)|FLAGS2_32_BIT_ERROR_CODES);
+ DEBUG(3,("error packet at %s(%d) cmd=%d (%s) %s\n",
+ file, line,
+ (int)CVAL(outbuf,smb_com),
+ smb_fn_name(CVAL(outbuf,smb_com)),
+ nt_errstr(ntstatus)));
+ } else {
+ /* We're returning a DOS error only. */
+ if (eclass == 0 && NT_STATUS_V(ntstatus)) {
+ ntstatus_to_dos(ntstatus, &eclass, &ecode);
+ }
+
+ SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2)&~FLAGS2_32_BIT_ERROR_CODES);
+ SSVAL(outbuf,smb_rcls,eclass);
+ SSVAL(outbuf,smb_err,ecode);
+
+ DEBUG(3,("error packet at %s(%d) cmd=%d (%s) eclass=%d ecode=%d\n",
+ file, line,
+ (int)CVAL(outbuf,smb_com),
+ smb_fn_name(CVAL(outbuf,smb_com)),
+ eclass,
+ ecode));
+ }
+
+ return outsize;
+}
projects / samba / blobdiff