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
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/*
* Unix SMB/CIFS implementation.
* Virtual Windows Registry Layer
* Copyright (C) Volker Lendecke 2006
* Copyright (C) Michael Adam 2007
*
* 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"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV
extern REGISTRY_OPS regdb_ops; /* these are the default */
static int smbconf_fetch_keys( const char *key, REGSUBKEY_CTR *subkey_ctr )
{
return regdb_ops.fetch_subkeys(key, subkey_ctr);
}
static BOOL smbconf_store_keys( const char *key, REGSUBKEY_CTR *subkeys )
{
return regdb_ops.store_subkeys(key, subkeys);
}
static int smbconf_fetch_values( const char *key, REGVAL_CTR *val )
{
return regdb_ops.fetch_values(key, val);
}
static BOOL smbconf_store_values( const char *key, REGVAL_CTR *val )
{
int i;
int num_values = regval_ctr_numvals(val);
REGVAL_CTR *new_val_ctr;
/*
* we build a second regval container and copy over the values,
* possibly changing names to the canonical name, because when
* canonicalizing parameter names and replacing the original parameter
* (with reval_ctr_deletevalue and regval_ctr_addvalue) in the original
* container, the order would change and that is not so good in the
* "for" loop... :-o
*/
new_val_ctr = TALLOC_ZERO_P(val, REGVAL_CTR);
if (new_val_ctr == NULL) {
DEBUG(1, ("out of memory\n"));
return False;
}
for (i=0; i < num_values; i++) {
REGISTRY_VALUE *theval = regval_ctr_specific_value(val, i);
const char *valname = regval_name(theval);
int res;
DEBUG(10, ("inspecting value '%s'\n", valname));
/* unfortunately, we can not reject names that are not
* valid parameter names here, since e.g. regedit first
* creates values as "New Value #1" and so on and then
* drops into rename. */
if (regval_type(theval) != REG_SZ) {
DEBUG(1, ("smbconf_store_values: only registry value "
"type REG_SZ currently allowed under key "
"smbconf\n"));
return False;
}
if (registry_smbconf_valname_forbidden(regval_name(theval))) {
DEBUG(1, ("smbconf_store_values: value '%s' forbidden "
"in registry.\n", valname));
return False;
}
if (lp_parameter_is_valid(valname) &&
!lp_parameter_is_canonical(valname))
{
char *valstr;
size_t len;
const char *canon_valname;
const char *canon_valstr;
BOOL inverse;
struct registry_value *value;
WERROR err;
DATA_BLOB value_data;
TALLOC_CTX *mem_ctx;
DEBUG(5, ("valid parameter '%s' given but it is a "
"synonym. going to canonicalize it.\n",
valname));
mem_ctx = talloc_new(val);
if (mem_ctx == NULL) {
DEBUG(1, ("out of memory...\n"));
return False;
}
err = registry_pull_value(mem_ctx, &value,
theval->type,
theval->data_p,
theval->size,
theval->size);
if (!W_ERROR_IS_OK(err)) {
TALLOC_FREE(mem_ctx);
return False;
}
valstr = (value->v.sz.str);
len = value->v.sz.len;
if (valstr[len - 1] != '\0') {
DEBUG(10, ("string is not '\\0'-terminated. "
"adding '\\0'.\n"));
valstr = TALLOC_REALLOC_ARRAY(mem_ctx, valstr,
char, len + 1);
if (valstr == NULL) {
DEBUG(1, ("out of memory\n"));
TALLOC_FREE(mem_ctx);
return False;
}
valstr[len] = '\0';
len++;
}
if (!lp_canonicalize_parameter(valname, &canon_valname,
&inverse))
{
DEBUG(5, ("Error: lp_canonicalize_parameter "
"failed after lp_parameter_is_valid. "
"This should not happen!\n"));
TALLOC_FREE(mem_ctx);
return False;
}
DEBUG(10, ("old value name: '%s', canonical value "
"name: '%s'\n", valname, canon_valname));
if (inverse && lp_string_is_valid_boolean(valstr)) {
lp_invert_boolean(valstr, &canon_valstr);
} else {
canon_valstr = valstr;
}
ZERO_STRUCTP(value);
value->type = REG_SZ;
value->v.sz.str = CONST_DISCARD(char *, canon_valstr);
value->v.sz.len = strlen(canon_valstr) + 1;
err = registry_push_value(mem_ctx, value, &value_data);
if (!W_ERROR_IS_OK(err)) {
DEBUG(10, ("error calling registry_push_value."
"\n"));
TALLOC_FREE(mem_ctx);
return False;
}
DEBUG(10, ("adding canonicalized parameter to "
"container.\n"));
theval = regval_compose(val, canon_valname,
value->type,
(char *)value_data.data,
value_data.length);
if (theval == NULL) {
DEBUG(10, ("error composing registry value. "
"(no memory?)\n"));
TALLOC_FREE(mem_ctx);
return False;
}
TALLOC_FREE(mem_ctx);
} else {
DEBUG(10, ("%s parameter found, "
"copying it to new container...\n",
(lp_parameter_is_valid(valname)?
"valid":"unknown")));
}
res = regval_ctr_copyvalue(new_val_ctr, theval);
if (res == 0) {
DEBUG(10, ("error calling regval_ctr_copyvalue."
" (no memory?)\n"));
return False;
}
DEBUG(10, ("parameter copied. container now has %d "
"values.\n", res));
}
return regdb_ops.store_values(key, new_val_ctr);
}
static BOOL smbconf_reg_access_check(const char *keyname, uint32 requested,
uint32 *granted,
const struct nt_user_token *token)
{
if (!(user_has_privileges(token, &se_disk_operators))) {
return False;
}
*granted = REG_KEY_ALL;
return True;
}
static WERROR smbconf_get_secdesc(TALLOC_CTX *mem_ctx, const char *key,
struct security_descriptor **psecdesc)
{
return regdb_ops.get_secdesc(mem_ctx, key, psecdesc);
}
static WERROR smbconf_set_secdesc(const char *key,
struct security_descriptor *secdesc)
{
return regdb_ops.set_secdesc(key, secdesc);
}
/*
* Table of function pointers for accessing smb.conf data
*/
REGISTRY_OPS smbconf_reg_ops = {
smbconf_fetch_keys,
smbconf_fetch_values,
smbconf_store_keys,
smbconf_store_values,
smbconf_reg_access_check,
smbconf_get_secdesc,
smbconf_set_secdesc
};
|
