X-Git-Url: https://vcs.maemo.org/git/?p=samba;a=blobdiff_plain;f=source%2Fsmbd%2Ferror.c;fp=source%2Fsmbd%2Ferror.c;h=fa236f0de05aae8f85e2d4bec33234cc5fb68699;hp=0000000000000000000000000000000000000000;hb=6bca4ca307d55b6dc888e56cee47aebcddbce786;hpb=7fd70fa738b636089bcc6c961aa3eaa02f20dda2

diff --git a/source/smbd/error.c b/source/smbd/error.c
new file mode 100644
index 0000000..fa236f0
--- /dev/null
+++ b/source/smbd/error.c
@@ -0,0 +1,166 @@
+/* 
+   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;
+}