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30191d1a57
bugs in various places whilst doing this (places that assumed
BOOL == int). I also need to fix the Samba4 pidl generation
(next checkin).
Jeremy.
(This used to be commit f35a266b3c
)
199 lines
6.0 KiB
C
199 lines
6.0 KiB
C
/*
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Unix SMB/CIFS implementation.
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error packet handling
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Copyright (C) Andrew Tridgell 1992-1998
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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/* From lib/error.c */
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extern struct unix_error_map unix_dos_nt_errmap[];
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extern uint32 global_client_caps;
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/****************************************************************************
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Create an error packet from errno.
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****************************************************************************/
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int unix_error_packet(char *outbuf,int def_class,uint32 def_code, NTSTATUS def_status, int line, const char *file)
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{
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int eclass=def_class;
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int ecode=def_code;
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NTSTATUS ntstatus = def_status;
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int i=0;
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if (errno != 0) {
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DEBUG(3,("unix_error_packet: error string = %s\n",strerror(errno)));
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while (unix_dos_nt_errmap[i].dos_class != 0) {
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if (unix_dos_nt_errmap[i].unix_error == errno) {
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eclass = unix_dos_nt_errmap[i].dos_class;
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ecode = unix_dos_nt_errmap[i].dos_code;
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ntstatus = unix_dos_nt_errmap[i].nt_error;
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break;
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}
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i++;
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}
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}
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return error_packet(outbuf,eclass,ecode,ntstatus,line,file);
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}
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bool use_nt_status(void)
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{
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return lp_nt_status_support() && (global_client_caps & CAP_STATUS32);
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}
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/****************************************************************************
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Create an error packet. Normally called using the ERROR() macro.
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Setting eclass and ecode only and status to NT_STATUS_OK forces DOS errors.
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Setting status only and eclass and ecode to zero forces NT errors.
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If the override errors are set they take precedence over any passed in values.
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****************************************************************************/
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void error_packet_set(char *outbuf, uint8 eclass, uint32 ecode, NTSTATUS ntstatus, int line, const char *file)
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{
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bool force_nt_status = False;
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bool force_dos_status = False;
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if (eclass == (uint8)-1) {
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force_nt_status = True;
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} else if (NT_STATUS_IS_DOS(ntstatus)) {
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force_dos_status = True;
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}
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if (force_nt_status || (!force_dos_status && lp_nt_status_support() && (global_client_caps & CAP_STATUS32))) {
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/* We're returning an NT error. */
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if (NT_STATUS_V(ntstatus) == 0 && eclass) {
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ntstatus = dos_to_ntstatus(eclass, ecode);
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}
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SIVAL(outbuf,smb_rcls,NT_STATUS_V(ntstatus));
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SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2)|FLAGS2_32_BIT_ERROR_CODES);
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DEBUG(3,("error packet at %s(%d) cmd=%d (%s) %s\n",
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file, line,
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(int)CVAL(outbuf,smb_com),
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smb_fn_name(CVAL(outbuf,smb_com)),
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nt_errstr(ntstatus)));
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} else {
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/* We're returning a DOS error only. */
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if (NT_STATUS_IS_DOS(ntstatus)) {
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eclass = NT_STATUS_DOS_CLASS(ntstatus);
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ecode = NT_STATUS_DOS_CODE(ntstatus);
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} else if (eclass == 0 && NT_STATUS_V(ntstatus)) {
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ntstatus_to_dos(ntstatus, &eclass, &ecode);
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}
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SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2)&~FLAGS2_32_BIT_ERROR_CODES);
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SSVAL(outbuf,smb_rcls,eclass);
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SSVAL(outbuf,smb_err,ecode);
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DEBUG(3,("error packet at %s(%d) cmd=%d (%s) eclass=%d ecode=%d\n",
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file, line,
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(int)CVAL(outbuf,smb_com),
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smb_fn_name(CVAL(outbuf,smb_com)),
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eclass,
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ecode));
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}
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}
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int error_packet(char *outbuf, uint8 eclass, uint32 ecode, NTSTATUS ntstatus, int line, const char *file)
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{
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int outsize = set_message(outbuf,0,0,True);
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error_packet_set(outbuf, eclass, ecode, ntstatus, line, file);
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return outsize;
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}
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void reply_nt_error(struct smb_request *req, NTSTATUS ntstatus,
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int line, const char *file)
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{
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TALLOC_FREE(req->outbuf);
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reply_outbuf(req, 0, 0);
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error_packet_set((char *)req->outbuf, 0, 0, ntstatus, line, file);
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}
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void reply_force_nt_error(struct smb_request *req, NTSTATUS ntstatus,
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int line, const char *file)
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{
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TALLOC_FREE(req->outbuf);
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reply_outbuf(req, 0, 0);
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error_packet_set((char *)req->outbuf, -1, -1, ntstatus, line, file);
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}
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void reply_dos_error(struct smb_request *req, uint8 eclass, uint32 ecode,
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int line, const char *file)
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{
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TALLOC_FREE(req->outbuf);
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reply_outbuf(req, 0, 0);
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error_packet_set((char *)req->outbuf, eclass, ecode, NT_STATUS_OK, line,
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file);
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}
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void reply_both_error(struct smb_request *req, uint8 eclass, uint32 ecode,
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NTSTATUS status, int line, const char *file)
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{
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TALLOC_FREE(req->outbuf);
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reply_outbuf(req, 0, 0);
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error_packet_set((char *)req->outbuf, eclass, ecode, status,
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line, file);
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}
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void reply_unix_error(struct smb_request *req, uint8 defclass, uint32 defcode,
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NTSTATUS defstatus, int line, const char *file)
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{
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int eclass=defclass;
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int ecode=defcode;
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NTSTATUS ntstatus = defstatus;
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int i=0;
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TALLOC_FREE(req->outbuf);
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reply_outbuf(req, 0, 0);
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if (errno != 0) {
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DEBUG(3,("unix_error_packet: error string = %s\n",
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strerror(errno)));
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while (unix_dos_nt_errmap[i].dos_class != 0) {
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if (unix_dos_nt_errmap[i].unix_error == errno) {
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eclass = unix_dos_nt_errmap[i].dos_class;
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ecode = unix_dos_nt_errmap[i].dos_code;
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ntstatus = unix_dos_nt_errmap[i].nt_error;
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break;
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}
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i++;
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}
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}
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error_packet_set((char *)req->outbuf, eclass, ecode, ntstatus,
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line, file);
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}
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void reply_openerror(struct smb_request *req, NTSTATUS status)
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{
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if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_COLLISION)) {
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/*
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* We hit an existing file, and if we're returning DOS
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* error codes OBJECT_NAME_COLLISION would map to
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* ERRDOS/183, we need to return ERRDOS/80, see bug
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* 4852.
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*/
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reply_botherror(req, NT_STATUS_OBJECT_NAME_COLLISION,
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ERRDOS, ERRfilexists);
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} else {
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reply_nterror(req, status);
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}
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}
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