2 Unix SMB/CIFS implementation.
3 Transparent registry backend handling
4 Copyright (C) Jelmer Vernooij 2003-2007.
5 Copyright (C) Wilco Baan Hofman 2010.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "lib/registry/registry.h"
23 #include "librpc/gen_ndr/winreg.h"
24 #include "lib/util/data_blob.h"
26 _PUBLIC_ char *reg_val_data_string(TALLOC_CTX *mem_ctx, uint32_t type,
32 return talloc_strdup(mem_ctx, "");
37 convert_string_talloc(mem_ctx,
39 data.data, data.length,
43 case REG_DWORD_BIG_ENDIAN:
44 SMB_ASSERT(data.length == sizeof(uint32_t));
45 ret = talloc_asprintf(mem_ctx, "0x%8.8x",
49 SMB_ASSERT(data.length == sizeof(uint64_t));
50 ret = talloc_asprintf(mem_ctx, "0x%16.16llx",
51 (long long)BVAL(data.data, 0));
54 ret = data_blob_hex_string_upper(mem_ctx, &data);
57 /* "NULL" is the right return value */
60 /* FIXME: We don't support this yet */
64 /* Other datatypes aren't supported -> return "NULL" */
71 /** Generate a string that describes a registry value */
72 _PUBLIC_ char *reg_val_description(TALLOC_CTX *mem_ctx,
77 return talloc_asprintf(mem_ctx, "%s = %s : %s", name?name:"<No Name>",
78 str_regtype(data_type),
79 reg_val_data_string(mem_ctx, data_type, data));
83 * This implements reading hex bytes that include comma's.
84 * It was previously handled by strhex_to_data_blob, but that did not cover
85 * the format used by windows.
87 static DATA_BLOB reg_strhex_to_data_blob(TALLOC_CTX *mem_ctx, const char *str)
90 const char *HEXCHARS = "0123456789ABCDEF";
94 ret = data_blob_talloc_zero(mem_ctx, (strlen(str)+(strlen(str) % 3))/3);
96 for (i = 0; i < strlen(str); i++) {
97 hi = strchr(HEXCHARS, toupper(str[i]));
102 lo = strchr(HEXCHARS, toupper(str[i]));
106 ret.data[j] = PTR_DIFF(hi, HEXCHARS) << 4;
107 ret.data[j] += PTR_DIFF(lo, HEXCHARS);
110 if (j > ret.length) {
111 DEBUG(0, ("Trouble converting hex string to bin\n"));
119 _PUBLIC_ bool reg_string_to_val(TALLOC_CTX *mem_ctx, const char *type_str,
120 const char *data_str, uint32_t *type, DATA_BLOB *data)
122 char *tmp_type_str, *p, *q;
125 *type = regtype_by_string(type_str);
128 /* Normal windows format is hex, hex(type int as string),
129 dword or just a string. */
130 if (strncmp(type_str, "hex(", 4) == 0) {
131 /* there is a hex string with the value type between
133 tmp_type_str = talloc_strdup(mem_ctx, type_str);
134 q = p = tmp_type_str + strlen("hex(");
136 /* Go to the closing brace or end of the string */
137 while (*q != ')' && *q != '\0') q++;
140 /* Convert hex string to int, store it in type */
141 result = sscanf(p, "%x", type);
143 DEBUG(0, ("Could not convert hex to int\n"));
146 talloc_free(tmp_type_str);
147 } else if (strcmp(type_str, "hex") == 0) {
149 } else if (strcmp(type_str, "dword") == 0) {
157 /* Convert data appropriately */
161 return convert_string_talloc(mem_ctx,
163 data_str, strlen(data_str)+1,
164 (void **)&data->data,
170 *data = reg_strhex_to_data_blob(mem_ctx, data_str);
173 case REG_DWORD_BIG_ENDIAN: {
174 uint32_t tmp = strtol(data_str, NULL, 16);
175 *data = data_blob_talloc(mem_ctx, NULL, sizeof(uint32_t));
176 if (data->data == NULL) return false;
177 SIVAL(data->data, 0, tmp);
181 uint64_t tmp = strtoll(data_str, NULL, 16);
182 *data = data_blob_talloc(mem_ctx, NULL, sizeof(uint64_t));
183 if (data->data == NULL) return false;
184 SBVAL(data->data, 0, tmp);
192 /* Other datatypes aren't supported -> return no success */
198 /** Open a key by name (including the predefined key name!) */
199 WERROR reg_open_key_abs(TALLOC_CTX *mem_ctx, struct registry_context *handle,
200 const char *name, struct registry_key **result)
202 struct registry_key *predef;
207 if (strchr(name, '\\') != NULL)
208 predeflength = strchr(name, '\\')-name;
210 predeflength = strlen(name);
212 predefname = talloc_strndup(mem_ctx, name, predeflength);
213 W_ERROR_HAVE_NO_MEMORY(predefname);
214 error = reg_get_predefined_key_by_name(handle, predefname, &predef);
215 talloc_free(predefname);
217 if (!W_ERROR_IS_OK(error)) {
221 if (strchr(name, '\\')) {
222 return reg_open_key(mem_ctx, predef, strchr(name, '\\')+1,
230 static WERROR get_abs_parent(TALLOC_CTX *mem_ctx, struct registry_context *ctx,
231 const char *path, struct registry_key **parent,
237 if (strchr(path, '\\') == NULL) {
241 parent_name = talloc_strndup(mem_ctx, path, strrchr(path, '\\')-path);
242 W_ERROR_HAVE_NO_MEMORY(parent_name);
243 error = reg_open_key_abs(mem_ctx, ctx, parent_name, parent);
244 talloc_free(parent_name);
245 if (!W_ERROR_IS_OK(error)) {
249 *name = talloc_strdup(mem_ctx, strrchr(path, '\\')+1);
250 W_ERROR_HAVE_NO_MEMORY(*name);
255 WERROR reg_key_del_abs(struct registry_context *ctx, const char *path)
257 struct registry_key *parent;
259 TALLOC_CTX *mem_ctx = talloc_init("reg_key_del_abs");
262 if (!strchr(path, '\\')) {
266 error = get_abs_parent(mem_ctx, ctx, path, &parent, &n);
267 if (W_ERROR_IS_OK(error)) {
268 error = reg_key_del(mem_ctx, parent, n);
271 talloc_free(mem_ctx);
276 WERROR reg_key_add_abs(TALLOC_CTX *mem_ctx, struct registry_context *ctx,
277 const char *path, uint32_t access_mask,
278 struct security_descriptor *sec_desc,
279 struct registry_key **result)
281 struct registry_key *parent;
287 if (!strchr(path, '\\')) {
288 return WERR_ALREADY_EXISTS;
291 error = get_abs_parent(mem_ctx, ctx, path, &parent, &n);
292 if (!W_ERROR_IS_OK(error)) {
293 DEBUG(2, ("Opening parent of %s failed with %s\n", path,
298 error = reg_key_add_name(mem_ctx, parent, n, NULL, sec_desc, result);