source4/lib/registry/pyregistry.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2008
   5    Copyright (C) Wilco Baan Hofman <wilco@baanhofman.nl> 2010
   6
   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.
  11
  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.
  16
  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/>.
  19 */
  20
  21 #include <Python.h>
  22 #include "python/py3compat.h"
  23 #include "includes.h"
  24 #include "python/modules.h"
  25 #include "libcli/util/pyerrors.h"
  26 #include "lib/registry/registry.h"
  27 #include <pytalloc.h>
  28 #include "lib/events/events.h"
  29 #include "auth/credentials/pycredentials.h"
  30 #include "param/pyparam.h"
  31
  32 extern PyTypeObject PyRegistryKey;
  33 extern PyTypeObject PyRegistry;
  34 extern PyTypeObject PyHiveKey;
  35
  36 /*#define PyRegistryKey_AsRegistryKey(obj) pytalloc_get_type(obj, struct registry_key)*/
  37 #define PyRegistry_AsRegistryContext(obj) ((struct registry_context *)pytalloc_get_ptr(obj))
  38 #define PyHiveKey_AsHiveKey(obj) ((struct hive_key*)pytalloc_get_ptr(obj))
  39
  40
  41 static PyObject *py_get_predefined_key_by_name(PyObject *self, PyObject *args)
  42 {
  43         char *name;
  44         WERROR result;
  45         struct registry_context *ctx = PyRegistry_AsRegistryContext(self);
  46         struct registry_key *key;
  47
  48         if (!PyArg_ParseTuple(args, "s", &name))
  49                 return NULL;
  50
  51         result = reg_get_predefined_key_by_name(ctx, name, &key);
  52         PyErr_WERROR_NOT_OK_RAISE(result);
  53
  54         return pytalloc_steal(&PyRegistryKey, key);
  55 }
  56
  57 static PyObject *py_key_del_abs(PyObject *self, PyObject *args)
  58 {
  59         char *path;
  60         WERROR result;
  61         struct registry_context *ctx = PyRegistry_AsRegistryContext(self);
  62
  63         if (!PyArg_ParseTuple(args, "s", &path))
  64                 return NULL;
  65
  66         result = reg_key_del_abs(ctx, path);
  67         PyErr_WERROR_NOT_OK_RAISE(result);
  68
  69         Py_RETURN_NONE;
  70 }
  71
  72 static PyObject *py_get_predefined_key(PyObject *self, PyObject *args)
  73 {
  74         uint32_t hkey;
  75         struct registry_context *ctx = PyRegistry_AsRegistryContext(self);
  76         WERROR result;
  77         struct registry_key *key;
  78
  79         if (!PyArg_ParseTuple(args, "I", &hkey))
  80                 return NULL;
  81
  82         result = reg_get_predefined_key(ctx, hkey, &key);
  83         PyErr_WERROR_NOT_OK_RAISE(result);
  84
  85         return pytalloc_steal(&PyRegistryKey, key);
  86 }
  87
  88 static PyObject *py_diff_apply(PyObject *self, PyObject *args)
  89 {
  90         char *filename;
  91         WERROR result;
  92         struct registry_context *ctx = PyRegistry_AsRegistryContext(self);
  93         if (!PyArg_ParseTuple(args, "s", &filename))
  94                 return NULL;
  95
  96         result = reg_diff_apply(ctx, filename);
  97         PyErr_WERROR_NOT_OK_RAISE(result);
  98
  99         Py_RETURN_NONE;
 100 }
 101
 102 static PyObject *py_mount_hive(PyObject *self, PyObject *args)
 103 {
 104         struct registry_context *ctx = PyRegistry_AsRegistryContext(self);
 105         uint32_t hkey;
 106         PyObject *py_hivekey, *py_elements = Py_None;
 107         const char **elements;
 108         WERROR result;
 109
 110         if (!PyArg_ParseTuple(args, "OI|O", &py_hivekey, &hkey, &py_elements))
 111                 return NULL;
 112
 113         if (!PyList_Check(py_elements) && py_elements != Py_None) {
 114                 PyErr_SetString(PyExc_TypeError, "Expected list of elements");
 115                 return NULL;
 116         }
 117
 118         if (py_elements == Py_None) {
 119                 elements = NULL;
 120         } else {
 121                 int i;
 122                 elements = talloc_array(NULL, const char *, PyList_Size(py_elements));
 123                 for (i = 0; i < PyList_Size(py_elements); i++)
 124                         elements[i] = PyUnicode_AsUTF8(PyList_GetItem(py_elements, i));
 125         }
 126
 127         SMB_ASSERT(ctx != NULL);
 128
 129         result = reg_mount_hive(ctx, PyHiveKey_AsHiveKey(py_hivekey), hkey, elements);
 130         PyErr_WERROR_NOT_OK_RAISE(result);
 131
 132         Py_RETURN_NONE;
 133 }
 134
 135 static PyObject *registry_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 136 {
 137         WERROR result;
 138         struct registry_context *ctx;
 139         result = reg_open_local(NULL, &ctx);
 140         PyErr_WERROR_NOT_OK_RAISE(result);
 141         return pytalloc_steal(&PyRegistry, ctx);
 142 }
 143
 144 static PyMethodDef registry_methods[] = {
 145         { "get_predefined_key_by_name", py_get_predefined_key_by_name, METH_VARARGS,
 146                 "S.get_predefined_key_by_name(name) -> key\n"
 147                 "Find a predefined key by name" },
 148         { "key_del_abs", py_key_del_abs, METH_VARARGS, "S.key_del_abs(name) -> None\n"
 149                 "Delete a key by absolute path." },
 150         { "get_predefined_key", py_get_predefined_key, METH_VARARGS, "S.get_predefined_key(hkey_id) -> key\n"
 151                 "Find a predefined key by id" },
 152         { "diff_apply", py_diff_apply, METH_VARARGS, "S.diff_apply(filename) -> None\n"
 153                 "Apply the diff from the specified file" },
 154         { "mount_hive", py_mount_hive, METH_VARARGS, "S.mount_hive(key, key_id, elements=None) -> None\n"
 155                 "Mount the specified key at the specified path." },
 156         { NULL }
 157 };
 158
 159 PyTypeObject PyRegistry = {
 160         .tp_name = "Registry",
 161         .tp_methods = registry_methods,
 162         .tp_new = registry_new,
 163         .tp_flags = Py_TPFLAGS_DEFAULT,
 164 };
 165
 166 static PyObject *py_hive_key_del(PyObject *self, PyObject *args)
 167 {
 168         char *name;
 169         struct hive_key *key = PyHiveKey_AsHiveKey(self);
 170         WERROR result;
 171
 172         if (!PyArg_ParseTuple(args, "s", &name))
 173                 return NULL;
 174
 175         result = hive_key_del(NULL, key, name);
 176
 177         PyErr_WERROR_NOT_OK_RAISE(result);
 178
 179         Py_RETURN_NONE;
 180 }
 181
 182 static PyObject *py_hive_key_flush(PyObject *self,
 183                 PyObject *Py_UNUSED(ignored))
 184 {
 185         WERROR result;
 186         struct hive_key *key = PyHiveKey_AsHiveKey(self);
 187
 188         result = hive_key_flush(key);
 189         PyErr_WERROR_NOT_OK_RAISE(result);
 190
 191         Py_RETURN_NONE;
 192 }
 193
 194 static PyObject *py_hive_key_del_value(PyObject *self, PyObject *args)
 195 {
 196         char *name;
 197         WERROR result;
 198         struct hive_key *key = PyHiveKey_AsHiveKey(self);
 199
 200         if (!PyArg_ParseTuple(args, "s", &name))
 201                 return NULL;
 202
 203         result = hive_key_del_value(NULL, key, name);
 204
 205         PyErr_WERROR_NOT_OK_RAISE(result);
 206
 207         Py_RETURN_NONE;
 208 }
 209
 210 static PyObject *py_hive_key_set_value(PyObject *self, PyObject *args)
 211 {
 212         char *name;
 213         uint32_t type;
 214         DATA_BLOB value;
 215         Py_ssize_t value_length = 0;
 216         WERROR result;
 217         struct hive_key *key = PyHiveKey_AsHiveKey(self);
 218
 219         if (!PyArg_ParseTuple(args, "sIz#", &name, &type, &value.data, &value_length)) {
 220                 return NULL;
 221         }
 222         value.length = value_length;
 223
 224         if (value.data != NULL)
 225                 result = hive_key_set_value(key, name, type, value);
 226         else
 227                 result = hive_key_del_value(NULL, key, name);
 228
 229         PyErr_WERROR_NOT_OK_RAISE(result);
 230
 231         Py_RETURN_NONE;
 232 }
 233
 234 static PyMethodDef hive_key_methods[] = {
 235         { "del", py_hive_key_del, METH_VARARGS, "S.del(name) -> None\n"
 236                 "Delete a subkey" },
 237         { "flush", (PyCFunction)py_hive_key_flush, METH_NOARGS, "S.flush() -> None\n"
 238                 "Flush this key to disk" },
 239         { "del_value", py_hive_key_del_value, METH_VARARGS, "S.del_value(name) -> None\n"
 240                  "Delete a value" },
 241         { "set_value", py_hive_key_set_value, METH_VARARGS, "S.set_value(name, type, data) -> None\n"
 242                  "Set a value" },
 243         { NULL }
 244 };
 245
 246 static PyObject *hive_new(PyTypeObject *type, PyObject *args, PyObject *kwargs) {
 247         Py_RETURN_NONE;
 248 }
 249
 250 static PyObject *py_open_hive(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 251 {
 252         const char *kwnames[] = { "location", "lp_ctx", "session_info", "credentials", NULL };
 253         WERROR result;
 254         struct loadparm_context *lp_ctx;
 255         PyObject *py_lp_ctx = Py_None;
 256         PyObject *py_session_info = Py_None;
 257         PyObject *py_credentials = Py_None;
 258         struct auth_session_info *session_info;
 259         struct cli_credentials *credentials;
 260         char *location;
 261         struct hive_key *hive_key;
 262         TALLOC_CTX *mem_ctx;
 263
 264         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|OOO",
 265                                          discard_const_p(char *, kwnames),
 266                                          &location,
 267                                          &py_lp_ctx, &py_session_info,
 268                                          &py_credentials))
 269                 return NULL;
 270
 271         mem_ctx = talloc_new(NULL);
 272         if (mem_ctx == NULL) {
 273                 PyErr_NoMemory();
 274                 return NULL;
 275         }
 276
 277         lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
 278         if (lp_ctx == NULL) {
 279                 PyErr_SetString(PyExc_TypeError, "Expected loadparm context");
 280                 talloc_free(mem_ctx);
 281                 return NULL;
 282         }
 283
 284         credentials = cli_credentials_from_py_object(py_credentials);
 285         if (credentials == NULL) {
 286                 PyErr_SetString(PyExc_TypeError, "Expected credentials");
 287                 talloc_free(mem_ctx);
 288                 return NULL;
 289         }
 290         session_info = NULL;
 291
 292         result = reg_open_hive(NULL, location, session_info, credentials,
 293                                samba_tevent_context_init(NULL),
 294                                lp_ctx, &hive_key);
 295         talloc_free(mem_ctx);
 296         PyErr_WERROR_NOT_OK_RAISE(result);
 297
 298         return pytalloc_steal(&PyHiveKey, hive_key);
 299 }
 300
 301 PyTypeObject PyHiveKey = {
 302         .tp_name = "HiveKey",
 303         .tp_methods = hive_key_methods,
 304         .tp_new = hive_new,
 305         .tp_flags = Py_TPFLAGS_DEFAULT,
 306 };
 307
 308 PyTypeObject PyRegistryKey = {
 309         .tp_name = "RegistryKey",
 310         .tp_flags = Py_TPFLAGS_DEFAULT,
 311 };
 312
 313 static PyObject *py_open_samba(PyObject *self, PyObject *args, PyObject *kwargs)
 314 {
 315         const char *kwnames[] = { "lp_ctx", "session_info", NULL };
 316         struct registry_context *reg_ctx;
 317         WERROR result;
 318         struct loadparm_context *lp_ctx;
 319         PyObject *py_lp_ctx = Py_None;
 320         PyObject *py_session_info = Py_None;
 321         PyObject *py_credentials = Py_None;
 322         struct auth_session_info *session_info;
 323         struct cli_credentials *credentials;
 324         TALLOC_CTX *mem_ctx;
 325
 326         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOO",
 327                                          discard_const_p(char *, kwnames),
 328                                          &py_lp_ctx, &py_session_info,
 329                                          &py_credentials))
 330                 return NULL;
 331
 332         mem_ctx = talloc_new(NULL);
 333         if (mem_ctx == NULL) {
 334                 PyErr_NoMemory();
 335                 return NULL;
 336         }
 337
 338         lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
 339         if (lp_ctx == NULL) {
 340                 PyErr_SetString(PyExc_TypeError, "Expected loadparm context");
 341                 talloc_free(mem_ctx);
 342                 return NULL;
 343         }
 344
 345         credentials = cli_credentials_from_py_object(py_credentials);
 346         if (credentials == NULL) {
 347                 PyErr_SetString(PyExc_TypeError, "Expected credentials");
 348                 talloc_free(mem_ctx);
 349                 return NULL;
 350         }
 351
 352         session_info = NULL; /* FIXME */
 353
 354         result = reg_open_samba(NULL, &reg_ctx, NULL,
 355                                 lp_ctx, session_info, credentials);
 356         talloc_free(mem_ctx);
 357         if (!W_ERROR_IS_OK(result)) {
 358                 PyErr_SetWERROR(result);
 359                 return NULL;
 360         }
 361
 362         return pytalloc_steal(&PyRegistry, reg_ctx);
 363 }
 364
 365 static PyObject *py_open_ldb_file(PyObject *self, PyObject *args, PyObject *kwargs)
 366 {
 367         const char *kwnames[] = { "location", "session_info", "credentials", "lp_ctx", NULL };
 368         PyObject *py_session_info = Py_None, *py_credentials = Py_None, *py_lp_ctx = Py_None;
 369         WERROR result;
 370         char *location;
 371         struct loadparm_context *lp_ctx;
 372         struct cli_credentials *credentials;
 373         struct hive_key *key;
 374         struct auth_session_info *session_info;
 375         TALLOC_CTX *mem_ctx;
 376
 377         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|OOO",
 378                                          discard_const_p(char *, kwnames),
 379                                          &location, &py_session_info,
 380                                          &py_credentials, &py_lp_ctx))
 381                 return NULL;
 382
 383         mem_ctx = talloc_new(NULL);
 384         if (mem_ctx == NULL) {
 385                 PyErr_NoMemory();
 386                 return NULL;
 387         }
 388
 389         lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
 390         if (lp_ctx == NULL) {
 391                 PyErr_SetString(PyExc_TypeError, "Expected loadparm context");
 392                 talloc_free(mem_ctx);
 393                 return NULL;
 394         }
 395
 396         credentials = cli_credentials_from_py_object(py_credentials);
 397         if (credentials == NULL) {
 398                 PyErr_SetString(PyExc_TypeError, "Expected credentials");
 399                 talloc_free(mem_ctx);
 400                 return NULL;
 401         }
 402
 403         session_info = NULL; /* FIXME */
 404
 405         result = reg_open_ldb_file(NULL, location, session_info, credentials,
 406                                    s4_event_context_init(NULL), lp_ctx, &key);
 407         talloc_free(mem_ctx);
 408         PyErr_WERROR_NOT_OK_RAISE(result);
 409
 410         return pytalloc_steal(&PyHiveKey, key);
 411 }
 412
 413 static PyObject *py_str_regtype(PyObject *self, PyObject *args)
 414 {
 415         int regtype;
 416
 417         if (!PyArg_ParseTuple(args, "i", &regtype))
 418                 return NULL;
 419
 420         return PyUnicode_FromString(str_regtype(regtype));
 421 }
 422
 423 static PyObject *py_get_predef_name(PyObject *self, PyObject *args)
 424 {
 425         uint32_t hkey;
 426         const char *str;
 427
 428         if (!PyArg_ParseTuple(args, "I", &hkey))
 429                 return NULL;
 430
 431         str = reg_get_predef_name(hkey);
 432         if (str == NULL)
 433                 Py_RETURN_NONE;
 434         return PyUnicode_FromString(str);
 435 }
 436
 437 static PyMethodDef py_registry_methods[] = {
 438         { "open_samba", PY_DISCARD_FUNC_SIG(PyCFunction, py_open_samba),
 439                 METH_VARARGS|METH_KEYWORDS, "open_samba() -> reg" },
 440         { "open_ldb", PY_DISCARD_FUNC_SIG(PyCFunction, py_open_ldb_file),
 441                 METH_VARARGS|METH_KEYWORDS, "open_ldb(location, session_info=None, credentials=None, loadparm_context=None) -> key" },
 442         { "open_hive", PY_DISCARD_FUNC_SIG(PyCFunction, py_open_hive),
 443                 METH_VARARGS|METH_KEYWORDS, "open_hive(location, session_info=None, credentials=None, loadparm_context=None) -> key" },
 444         { "str_regtype", py_str_regtype, METH_VARARGS, "str_regtype(int) -> str" },
 445         { "get_predef_name", py_get_predef_name, METH_VARARGS, "get_predef_name(hkey) -> str" },
 446         { NULL }
 447 };
 448
 449 static struct PyModuleDef moduledef = {
 450     PyModuleDef_HEAD_INIT,
 451     .m_name = "registry",
 452     .m_doc = "Registry",
 453     .m_size = -1,
 454     .m_methods = py_registry_methods,
 455 };
 456
 457 MODULE_INIT_FUNC(registry)
 458 {
 459         PyObject *m;
 460
 461         if (pytalloc_BaseObject_PyType_Ready(&PyHiveKey) < 0)
 462                 return NULL;
 463
 464         if (pytalloc_BaseObject_PyType_Ready(&PyRegistry) < 0)
 465                 return NULL;
 466
 467         if (pytalloc_BaseObject_PyType_Ready(&PyRegistryKey) < 0)
 468                 return NULL;
 469
 470         m = PyModule_Create(&moduledef);
 471         if (m == NULL)
 472                 return NULL;
 473
 474         PyModule_AddObject(m, "HKEY_CLASSES_ROOT", PyInt_FromLong(HKEY_CLASSES_ROOT));
 475         PyModule_AddObject(m, "HKEY_CURRENT_USER", PyInt_FromLong(HKEY_CURRENT_USER));
 476         PyModule_AddObject(m, "HKEY_LOCAL_MACHINE", PyInt_FromLong(HKEY_LOCAL_MACHINE));
 477         PyModule_AddObject(m, "HKEY_USERS", PyInt_FromLong(HKEY_USERS));
 478         PyModule_AddObject(m, "HKEY_PERFORMANCE_DATA", PyInt_FromLong(HKEY_PERFORMANCE_DATA));
 479         PyModule_AddObject(m, "HKEY_CURRENT_CONFIG", PyInt_FromLong(HKEY_CURRENT_CONFIG));
 480         PyModule_AddObject(m, "HKEY_DYN_DATA", PyInt_FromLong(HKEY_DYN_DATA));
 481         PyModule_AddObject(m, "HKEY_PERFORMANCE_TEXT", PyInt_FromLong(HKEY_PERFORMANCE_TEXT));
 482         PyModule_AddObject(m, "HKEY_PERFORMANCE_NLSTEXT", PyInt_FromLong(HKEY_PERFORMANCE_NLSTEXT));
 483
 484         Py_INCREF(&PyRegistry);
 485         PyModule_AddObject(m, "Registry", (PyObject *)&PyRegistry);
 486
 487         Py_INCREF(&PyHiveKey);
 488         PyModule_AddObject(m, "HiveKey", (PyObject *)&PyHiveKey);
 489
 490         Py_INCREF(&PyRegistryKey);
 491         PyModule_AddObject(m, "RegistryKey", (PyObject *)&PyRegistryKey);
 492
 493         return m;
 494 }