source: vendor/current/source4/param/pyparam.c

Last change on this file was 989, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.7
File size: 14.6 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
18*/
19
20#include <Python.h>
21#include "includes.h"
22#include "param/param.h"
23#include "param/loadparm.h"
24#include <pytalloc.h>
25#include "dynconfig/dynconfig.h"
26
27void initparam(void);
28
29#define PyLoadparmContext_AsLoadparmContext(obj) pytalloc_get_type(obj, struct loadparm_context)
30#define PyLoadparmService_AsLoadparmService(obj) pytalloc_get_type(obj, struct loadparm_service)
31
32extern PyTypeObject PyLoadparmContext;
33extern PyTypeObject PyLoadparmService;
34
35static PyObject *PyLoadparmService_FromService(struct loadparm_service *service)
36{
37 return pytalloc_reference(&PyLoadparmService, service);
38}
39
40static PyObject *py_lp_ctx_get_helper(struct loadparm_context *lp_ctx, const char *service_name, const char *param_name)
41{
42 struct parm_struct *parm = NULL;
43 void *parm_ptr = NULL;
44 int i;
45
46 if (service_name != NULL && strwicmp(service_name, GLOBAL_NAME) &&
47 strwicmp(service_name, GLOBAL_NAME2)) {
48 struct loadparm_service *service;
49 /* its a share parameter */
50 service = lpcfg_service(lp_ctx, service_name);
51 if (service == NULL) {
52 return NULL;
53 }
54 if (strchr(param_name, ':')) {
55 /* its a parametric option on a share */
56 const char *type = talloc_strndup(lp_ctx, param_name,
57 strcspn(param_name, ":"));
58 const char *option = strchr(param_name, ':') + 1;
59 const char *value;
60 if (type == NULL || option == NULL) {
61 return NULL;
62 }
63 value = lpcfg_get_parametric(lp_ctx, service, type, option);
64 if (value == NULL) {
65 return NULL;
66 }
67 return PyString_FromString(value);
68 }
69
70 parm = lpcfg_parm_struct(lp_ctx, param_name);
71 if (parm == NULL || parm->p_class == P_GLOBAL) {
72 return NULL;
73 }
74 parm_ptr = lpcfg_parm_ptr(lp_ctx, service, parm);
75 } else if (strchr(param_name, ':')) {
76 /* its a global parametric option */
77 const char *type = talloc_strndup(lp_ctx,
78 param_name, strcspn(param_name, ":"));
79 const char *option = strchr(param_name, ':') + 1;
80 const char *value;
81 if (type == NULL || option == NULL) {
82 return NULL;
83 }
84 value = lpcfg_get_parametric(lp_ctx, NULL, type, option);
85 if (value == NULL)
86 return NULL;
87 return PyString_FromString(value);
88 } else {
89 /* its a global parameter */
90 parm = lpcfg_parm_struct(lp_ctx, param_name);
91 if (parm == NULL) {
92 return NULL;
93 }
94 parm_ptr = lpcfg_parm_ptr(lp_ctx, NULL, parm);
95 }
96
97 if (parm == NULL || parm_ptr == NULL) {
98 return NULL;
99 }
100
101 /* construct and return the right type of python object */
102 switch (parm->type) {
103 case P_CHAR:
104 return PyString_FromFormat("%c", *(char *)parm_ptr);
105 case P_STRING:
106 case P_USTRING:
107 return PyString_FromString(*(char **)parm_ptr);
108 case P_BOOL:
109 return PyBool_FromLong(*(bool *)parm_ptr);
110 case P_BOOLREV:
111 return PyBool_FromLong(!(*(bool *)parm_ptr));
112 case P_INTEGER:
113 case P_OCTAL:
114 case P_BYTES:
115 return PyLong_FromLong(*(int *)parm_ptr);
116 case P_ENUM:
117 for (i=0; parm->enum_list[i].name; i++) {
118 if (*(int *)parm_ptr == parm->enum_list[i].value) {
119 return PyString_FromString(parm->enum_list[i].name);
120 }
121 }
122 return NULL;
123 case P_CMDLIST:
124 case P_LIST:
125 {
126 int j;
127 const char **strlist = *(const char ***)parm_ptr;
128 PyObject *pylist;
129
130 if(strlist == NULL) {
131 return PyList_New(0);
132 }
133
134 pylist = PyList_New(str_list_length(strlist));
135 for (j = 0; strlist[j]; j++)
136 PyList_SetItem(pylist, j,
137 PyString_FromString(strlist[j]));
138 return pylist;
139 }
140 }
141 return NULL;
142
143}
144
145static PyObject *py_lp_ctx_load(PyObject *self, PyObject *args)
146{
147 char *filename;
148 bool ret;
149 if (!PyArg_ParseTuple(args, "s", &filename))
150 return NULL;
151
152 ret = lpcfg_load(PyLoadparmContext_AsLoadparmContext(self), filename);
153
154 if (!ret) {
155 PyErr_Format(PyExc_RuntimeError, "Unable to load file %s", filename);
156 return NULL;
157 }
158 Py_RETURN_NONE;
159}
160
161static PyObject *py_lp_ctx_load_default(PyObject *self, PyObject *unused)
162{
163 bool ret;
164 ret = lpcfg_load_default(PyLoadparmContext_AsLoadparmContext(self));
165
166 if (!ret) {
167 PyErr_SetString(PyExc_RuntimeError, "Unable to load default file");
168 return NULL;
169 }
170 Py_RETURN_NONE;
171}
172
173static PyObject *py_lp_ctx_get(PyObject *self, PyObject *args)
174{
175 char *param_name;
176 char *section_name = NULL;
177 PyObject *ret;
178 if (!PyArg_ParseTuple(args, "s|z", &param_name, &section_name))
179 return NULL;
180
181 ret = py_lp_ctx_get_helper(PyLoadparmContext_AsLoadparmContext(self), section_name, param_name);
182 if (ret == NULL)
183 Py_RETURN_NONE;
184 return ret;
185}
186
187static PyObject *py_lp_ctx_is_myname(PyObject *self, PyObject *args)
188{
189 char *name;
190 if (!PyArg_ParseTuple(args, "s", &name))
191 return NULL;
192
193 return PyBool_FromLong(lpcfg_is_myname(PyLoadparmContext_AsLoadparmContext(self), name));
194}
195
196static PyObject *py_lp_ctx_is_mydomain(PyObject *self, PyObject *args)
197{
198 char *name;
199 if (!PyArg_ParseTuple(args, "s", &name))
200 return NULL;
201
202 return PyBool_FromLong(lpcfg_is_mydomain(PyLoadparmContext_AsLoadparmContext(self), name));
203}
204
205static PyObject *py_lp_ctx_set(PyObject *self, PyObject *args)
206{
207 char *name, *value;
208 bool ret;
209 if (!PyArg_ParseTuple(args, "ss", &name, &value))
210 return NULL;
211
212 ret = lpcfg_set_cmdline(PyLoadparmContext_AsLoadparmContext(self), name, value);
213 if (!ret) {
214 PyErr_SetString(PyExc_RuntimeError, "Unable to set parameter");
215 return NULL;
216 }
217
218 Py_RETURN_NONE;
219}
220
221static PyObject *py_lp_ctx_private_path(PyObject *self, PyObject *args)
222{
223 char *name, *path;
224 PyObject *ret;
225 if (!PyArg_ParseTuple(args, "s", &name))
226 return NULL;
227
228 path = lpcfg_private_path(NULL, PyLoadparmContext_AsLoadparmContext(self), name);
229 ret = PyString_FromString(path);
230 talloc_free(path);
231
232 return ret;
233}
234
235static PyObject *py_lp_ctx_services(PyObject *self, PyObject *unused)
236{
237 struct loadparm_context *lp_ctx = PyLoadparmContext_AsLoadparmContext(self);
238 PyObject *ret;
239 int i;
240 ret = PyList_New(lpcfg_numservices(lp_ctx));
241 for (i = 0; i < lpcfg_numservices(lp_ctx); i++) {
242 struct loadparm_service *service = lpcfg_servicebynum(lp_ctx, i);
243 if (service != NULL) {
244 PyList_SetItem(ret, i, PyString_FromString(lpcfg_servicename(service)));
245 }
246 }
247 return ret;
248}
249
250static PyObject *py_lp_ctx_server_role(PyObject *self, PyObject *unused)
251{
252 struct loadparm_context *lp_ctx = PyLoadparmContext_AsLoadparmContext(self);
253 uint32_t role;
254 const char *role_str;
255
256 role = lpcfg_server_role(lp_ctx);
257 role_str = server_role_str(role);
258
259 return PyString_FromString(role_str);
260}
261
262static PyObject *py_lp_dump(PyObject *self, PyObject *args)
263{
264 PyObject *py_stream;
265 bool show_defaults = false;
266 FILE *f;
267 struct loadparm_context *lp_ctx = PyLoadparmContext_AsLoadparmContext(self);
268
269 if (!PyArg_ParseTuple(args, "O|b", &py_stream, &show_defaults))
270 return NULL;
271
272 f = PyFile_AsFile(py_stream);
273 if (f == NULL) {
274 return NULL;
275 }
276
277 lpcfg_dump(lp_ctx, f, show_defaults, lpcfg_numservices(lp_ctx));
278
279 Py_RETURN_NONE;
280}
281
282static PyObject *py_lp_dump_a_parameter(PyObject *self, PyObject *args)
283{
284 PyObject *py_stream;
285 char *param_name;
286 const char *section_name = NULL;
287 FILE *f;
288 struct loadparm_context *lp_ctx = PyLoadparmContext_AsLoadparmContext(self);
289 struct loadparm_service *service;
290 bool ret;
291
292 if (!PyArg_ParseTuple(args, "Os|z", &py_stream, &param_name, &section_name))
293 return NULL;
294
295 f = PyFile_AsFile(py_stream);
296 if (f == NULL) {
297 return NULL;
298 }
299
300 if (section_name != NULL && strwicmp(section_name, GLOBAL_NAME) &&
301 strwicmp(section_name, GLOBAL_NAME2)) {
302 /* it's a share parameter */
303 service = lpcfg_service(lp_ctx, section_name);
304 if (service == NULL) {
305 PyErr_Format(PyExc_RuntimeError, "Unknown section %s", section_name);
306 return NULL;
307 }
308 } else {
309 /* it's global */
310 service = NULL;
311 section_name = "global";
312 }
313
314 ret = lpcfg_dump_a_parameter(lp_ctx, service, param_name, f);
315
316 if (!ret) {
317 PyErr_Format(PyExc_RuntimeError, "Parameter %s unknown for section %s", param_name, section_name);
318 return NULL;
319 }
320
321 Py_RETURN_NONE;
322
323}
324
325static PyObject *py_lp_log_level(PyObject *self, PyObject *unused)
326{
327 int ret = DEBUGLEVEL_CLASS[DBGC_CLASS];
328 return PyInt_FromLong(ret);
329}
330
331
332static PyObject *py_samdb_url(PyObject *self, PyObject *unused)
333{
334 struct loadparm_context *lp_ctx = PyLoadparmContext_AsLoadparmContext(self);
335 return PyString_FromFormat("tdb://%s/sam.ldb", lpcfg_private_dir(lp_ctx));
336}
337
338
339static PyMethodDef py_lp_ctx_methods[] = {
340 { "load", py_lp_ctx_load, METH_VARARGS,
341 "S.load(filename) -> None\n"
342 "Load specified file." },
343 { "load_default", py_lp_ctx_load_default, METH_NOARGS,
344 "S.load_default() -> None\n"
345 "Load default smb.conf file." },
346 { "is_myname", py_lp_ctx_is_myname, METH_VARARGS,
347 "S.is_myname(name) -> bool\n"
348 "Check whether the specified name matches one of our netbios names." },
349 { "is_mydomain", py_lp_ctx_is_mydomain, METH_VARARGS,
350 "S.is_mydomain(name) -> bool\n"
351 "Check whether the specified name matches our domain name." },
352 { "get", py_lp_ctx_get, METH_VARARGS,
353 "S.get(name, service_name) -> value\n"
354 "Find specified parameter." },
355 { "set", py_lp_ctx_set, METH_VARARGS,
356 "S.set(name, value) -> bool\n"
357 "Change a parameter." },
358 { "private_path", py_lp_ctx_private_path, METH_VARARGS,
359 "S.private_path(name) -> path\n" },
360 { "services", py_lp_ctx_services, METH_NOARGS,
361 "S.services() -> list" },
362 { "server_role", py_lp_ctx_server_role, METH_NOARGS,
363 "S.server_role() -> value\n"
364 "Get the server role." },
365 { "dump", py_lp_dump, METH_VARARGS,
366 "S.dump(stream, show_defaults=False)" },
367 { "log_level", py_lp_log_level, METH_NOARGS,
368 "S.log_level() -> int\n Get the active log level" },
369 { "dump_a_parameter", py_lp_dump_a_parameter, METH_VARARGS,
370 "S.dump_a_parameter(stream, name, service_name)" },
371 { "samdb_url", py_samdb_url, METH_NOARGS,
372 "S.samdb_url() -> string\n"
373 "Returns the current URL for sam.ldb." },
374 { NULL }
375};
376
377static PyObject *py_lp_ctx_default_service(PyObject *self, void *closure)
378{
379 return PyLoadparmService_FromService(lpcfg_default_service(PyLoadparmContext_AsLoadparmContext(self)));
380}
381
382static PyObject *py_lp_ctx_config_file(PyObject *self, void *closure)
383{
384 const char *configfile = lpcfg_configfile(PyLoadparmContext_AsLoadparmContext(self));
385 if (configfile == NULL)
386 Py_RETURN_NONE;
387 else
388 return PyString_FromString(configfile);
389}
390
391static PyGetSetDef py_lp_ctx_getset[] = {
392 { discard_const_p(char, "default_service"), (getter)py_lp_ctx_default_service, NULL, NULL },
393 { discard_const_p(char, "configfile"), (getter)py_lp_ctx_config_file, NULL,
394 discard_const_p(char, "Name of last config file that was loaded.") },
395 { NULL }
396};
397
398static PyObject *py_lp_ctx_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
399{
400 return pytalloc_reference(type, loadparm_init_global(false));
401}
402
403static Py_ssize_t py_lp_ctx_len(PyObject *self)
404{
405 return lpcfg_numservices(PyLoadparmContext_AsLoadparmContext(self));
406}
407
408static PyObject *py_lp_ctx_getitem(PyObject *self, PyObject *name)
409{
410 struct loadparm_service *service;
411 if (!PyString_Check(name)) {
412 PyErr_SetString(PyExc_TypeError, "Only string subscripts are supported");
413 return NULL;
414 }
415 service = lpcfg_service(PyLoadparmContext_AsLoadparmContext(self), PyString_AsString(name));
416 if (service == NULL) {
417 PyErr_SetString(PyExc_KeyError, "No such section");
418 return NULL;
419 }
420 return PyLoadparmService_FromService(service);
421}
422
423static PyMappingMethods py_lp_ctx_mapping = {
424 .mp_length = (lenfunc)py_lp_ctx_len,
425 .mp_subscript = (binaryfunc)py_lp_ctx_getitem,
426};
427
428PyTypeObject PyLoadparmContext = {
429 .tp_name = "param.LoadParm",
430 .tp_getset = py_lp_ctx_getset,
431 .tp_methods = py_lp_ctx_methods,
432 .tp_new = py_lp_ctx_new,
433 .tp_as_mapping = &py_lp_ctx_mapping,
434 .tp_flags = Py_TPFLAGS_DEFAULT,
435};
436
437static PyObject *py_lp_service_dump(PyObject *self, PyObject *args)
438{
439 PyObject *py_stream;
440 bool show_defaults = false;
441 FILE *f;
442 struct loadparm_service *service = PyLoadparmService_AsLoadparmService(self);
443 struct loadparm_service *default_service;
444 PyObject *py_default_service;
445
446 if (!PyArg_ParseTuple(args, "OO|b", &py_stream, &py_default_service,
447 &show_defaults))
448 return NULL;
449
450 f = PyFile_AsFile(py_stream);
451 if (f == NULL) {
452 return NULL;
453 }
454
455 if (!PyObject_TypeCheck(py_default_service, &PyLoadparmService)) {
456 PyErr_SetNone(PyExc_TypeError);
457 return NULL;
458 }
459
460 default_service = PyLoadparmService_AsLoadparmService(py_default_service);
461
462 lpcfg_dump_one(f, show_defaults, service, default_service);
463
464 Py_RETURN_NONE;
465}
466
467static PyMethodDef py_lp_service_methods[] = {
468 { "dump", (PyCFunction)py_lp_service_dump, METH_VARARGS,
469 "S.dump(f, default_service, show_defaults=False)" },
470 { NULL }
471};
472
473PyTypeObject PyLoadparmService = {
474 .tp_name = "param.LoadparmService",
475 .tp_methods = py_lp_service_methods,
476 .tp_flags = Py_TPFLAGS_DEFAULT,
477};
478
479static PyObject *py_default_path(PyObject *self)
480{
481 return PyString_FromString(lp_default_path());
482}
483
484static PyObject *py_setup_dir(PyObject *self)
485{
486 return PyString_FromString(dyn_SETUPDIR);
487}
488
489static PyObject *py_modules_dir(PyObject *self)
490{
491 return PyString_FromString(dyn_MODULESDIR);
492}
493
494static PyObject *py_bin_dir(PyObject *self)
495{
496 return PyString_FromString(dyn_BINDIR);
497}
498
499static PyObject *py_sbin_dir(PyObject *self)
500{
501 return PyString_FromString(dyn_SBINDIR);
502}
503
504static PyMethodDef pyparam_methods[] = {
505 { "default_path", (PyCFunction)py_default_path, METH_NOARGS,
506 "Returns the default smb.conf path." },
507 { "setup_dir", (PyCFunction)py_setup_dir, METH_NOARGS,
508 "Returns the compiled in location of provision tempates." },
509 { "modules_dir", (PyCFunction)py_modules_dir, METH_NOARGS,
510 "Returns the compiled in location of modules." },
511 { "bin_dir", (PyCFunction)py_bin_dir, METH_NOARGS,
512 "Returns the compiled in BINDIR." },
513 { "sbin_dir", (PyCFunction)py_sbin_dir, METH_NOARGS,
514 "Returns the compiled in SBINDIR." },
515 { NULL }
516};
517
518void initparam(void)
519{
520 PyObject *m;
521
522 if (pytalloc_BaseObject_PyType_Ready(&PyLoadparmContext) < 0)
523 return;
524
525 if (pytalloc_BaseObject_PyType_Ready(&PyLoadparmService) < 0)
526 return;
527
528 m = Py_InitModule3("param", pyparam_methods, "Parsing and writing Samba configuration files.");
529 if (m == NULL)
530 return;
531
532 Py_INCREF(&PyLoadparmContext);
533 PyModule_AddObject(m, "LoadParm", (PyObject *)&PyLoadparmContext);
534}
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