1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/*
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
/* From lib/error.c */
extern struct unix_error_map unix_dos_nt_errmap[];
extern uint32 global_client_caps;
/****************************************************************************
Create an error packet from errno.
****************************************************************************/
int unix_error_packet(const char *inbuf,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(inbuf,outbuf,eclass,ecode,ntstatus,line,file);
}
BOOL use_nt_status(void)
{
return lp_nt_status_support() && (global_client_caps & CAP_STATUS32);
}
/****************************************************************************
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.
****************************************************************************/
void error_packet_set(char *outbuf, uint8 eclass, uint32 ecode, NTSTATUS ntstatus, int line, const char *file)
{
BOOL force_nt_status = False;
BOOL force_dos_status = False;
if (eclass == (uint8)-1) {
force_nt_status = True;
} else if (NT_STATUS_IS_DOS(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 (NT_STATUS_IS_DOS(ntstatus)) {
eclass = NT_STATUS_DOS_CLASS(ntstatus);
ecode = NT_STATUS_DOS_CODE(ntstatus);
} else 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));
}
}
int error_packet(const char *inbuf, char *outbuf, uint8 eclass, uint32 ecode, NTSTATUS ntstatus, int line, const char *file)
{
int outsize = set_message(inbuf,outbuf,0,0,True);
error_packet_set(outbuf, eclass, ecode, ntstatus, line, file);
return outsize;
}
void reply_nt_error(struct smb_request *req, NTSTATUS ntstatus,
int line, const char *file)
{
TALLOC_FREE(req->outbuf);
reply_outbuf(req, 0, 0);
error_packet_set((char *)req->outbuf, 0, 0, ntstatus, line, file);
}
void reply_force_nt_error(struct smb_request *req, NTSTATUS ntstatus,
int line, const char *file)
{
TALLOC_FREE(req->outbuf);
reply_outbuf(req, 0, 0);
error_packet_set((char *)req->outbuf, -1, -1, ntstatus, line, file);
}
void reply_dos_error(struct smb_request *req, uint8 eclass, uint32 ecode,
int line, const char *file)
{
TALLOC_FREE(req->outbuf);
reply_outbuf(req, 0, 0);
error_packet_set((char *)req->outbuf, eclass, ecode, NT_STATUS_OK, line,
file);
}
void reply_both_error(struct smb_request *req, uint8 eclass, uint32 ecode,
NTSTATUS status, int line, const char *file)
{
TALLOC_FREE(req->outbuf);
reply_outbuf(req, 0, 0);
error_packet_set((char *)req->outbuf, eclass, ecode, status,
line, file);
}
void reply_unix_error(struct smb_request *req, uint8 defclass, uint32 defcode,
NTSTATUS defstatus, int line, const char *file)
{
int eclass=defclass;
int ecode=defcode;
NTSTATUS ntstatus = defstatus;
int i=0;
TALLOC_FREE(req->outbuf);
reply_outbuf(req, 0, 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++;
}
}
error_packet_set((char *)req->outbuf, eclass, ecode, ntstatus,
line, file);
}
|
