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
182
183
184
185
186
187
188
189
190
|
/*
Unix SMB/CIFS implementation.
FAKE FILE suppport, for faking up special files windows want access to
Copyright (C) Stefan (metze) Metzmacher 2003
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"
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "fake_file.h"
#include "auth.h"
struct fake_file_type {
const char *name;
enum FAKE_FILE_TYPE type;
void *(*init_pd)(TALLOC_CTX *mem_ctx);
};
static const struct fake_file_type fake_files[] = {
#ifdef WITH_QUOTAS
{FAKE_FILE_NAME_QUOTA_UNIX, FAKE_FILE_TYPE_QUOTA, init_quota_handle},
#endif /* WITH_QUOTAS */
{NULL, FAKE_FILE_TYPE_NONE, NULL}
};
/****************************************************************************
Create a fake file handle
****************************************************************************/
static struct fake_file_handle *init_fake_file_handle(enum FAKE_FILE_TYPE type)
{
struct fake_file_handle *fh = NULL;
int i;
for (i=0; fake_files[i].name!=NULL; i++) {
if (fake_files[i].type==type) {
break;
}
}
if (fake_files[i].name == NULL) {
return NULL;
}
DEBUG(5,("init_fake_file_handle: for [%s]\n",fake_files[i].name));
fh = talloc(NULL, struct fake_file_handle);
if (fh == NULL) {
DEBUG(0,("TALLOC_ZERO() failed.\n"));
return NULL;
}
fh->type = type;
if (fake_files[i].init_pd) {
fh->private_data = fake_files[i].init_pd(fh);
}
return fh;
}
/****************************************************************************
Does this name match a fake filename ?
****************************************************************************/
enum FAKE_FILE_TYPE is_fake_file_path(const char *path)
{
int i;
if (!path) {
return FAKE_FILE_TYPE_NONE;
}
for (i=0;fake_files[i].name!=NULL;i++) {
if (strncmp(path,fake_files[i].name,strlen(fake_files[i].name))==0) {
DEBUG(5,("is_fake_file: [%s] is a fake file\n",path));
return fake_files[i].type;
}
}
return FAKE_FILE_TYPE_NONE;
}
enum FAKE_FILE_TYPE is_fake_file(const struct smb_filename *smb_fname)
{
char *fname = NULL;
NTSTATUS status;
enum FAKE_FILE_TYPE ret;
if (!smb_fname) {
return FAKE_FILE_TYPE_NONE;
}
status = get_full_smb_filename(talloc_tos(), smb_fname, &fname);
if (!NT_STATUS_IS_OK(status)) {
return FAKE_FILE_TYPE_NONE;
}
ret = is_fake_file_path(fname);
TALLOC_FREE(fname);
return ret;
}
/****************************************************************************
Open a fake quota file with a share mode.
****************************************************************************/
NTSTATUS open_fake_file(struct smb_request *req, connection_struct *conn,
uint64_t current_vuid,
enum FAKE_FILE_TYPE fake_file_type,
const struct smb_filename *smb_fname,
uint32 access_mask,
files_struct **result)
{
files_struct *fsp = NULL;
NTSTATUS status;
status = smbd_calculate_access_mask(conn, smb_fname, false,
access_mask, &access_mask);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("open_fake_file: smbd_calculate_access_mask "
"on service[%s] file[%s] returned %s\n",
lp_servicename(talloc_tos(), SNUM(conn)),
smb_fname_str_dbg(smb_fname),
nt_errstr(status)));
return status;
}
/* access check */
if (geteuid() != sec_initial_uid()) {
DEBUG(3, ("open_fake_file_shared: access_denied to "
"service[%s] file[%s] user[%s]\n",
lp_servicename(talloc_tos(), SNUM(conn)),
smb_fname_str_dbg(smb_fname),
conn->session_info->unix_info->unix_name));
return NT_STATUS_ACCESS_DENIED;
}
status = file_new(req, conn, &fsp);
if(!NT_STATUS_IS_OK(status)) {
return status;
}
DEBUG(5,("open_fake_file_shared: fname = %s, %s, access_mask = 0x%x\n",
smb_fname_str_dbg(smb_fname), fsp_fnum_dbg(fsp),
(unsigned int)access_mask));
fsp->conn = conn;
fsp->fh->fd = -1;
fsp->vuid = current_vuid;
fsp->fh->pos = -1;
fsp->can_lock = False; /* Should this be true ? - No, JRA */
fsp->access_mask = access_mask;
status = fsp_set_smb_fname(fsp, smb_fname);
if (!NT_STATUS_IS_OK(status)) {
file_free(req, fsp);
return NT_STATUS_NO_MEMORY;
}
fsp->fake_file_handle = init_fake_file_handle(fake_file_type);
if (fsp->fake_file_handle==NULL) {
file_free(req, fsp);
return NT_STATUS_NO_MEMORY;
}
*result = fsp;
return NT_STATUS_OK;
}
NTSTATUS close_fake_file(struct smb_request *req, files_struct *fsp)
{
file_free(req, fsp);
return NT_STATUS_OK;
}
|
