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Diffstat (limited to 'source4/param/pyparam.c')
| -rw-r--r-- | source4/param/pyparam.c | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/source4/param/pyparam.c b/source4/param/pyparam.c new file mode 100644 index 0000000000..efaedf7b41 --- /dev/null +++ b/source4/param/pyparam.c @@ -0,0 +1,385 @@ +/* + Unix SMB/CIFS implementation. + Samba utility functions + Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008 + + 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 <stdint.h> +#include <stdbool.h> + +#include "includes.h" +#include "param/param.h" +#include "param/loadparm.h" +#include <Python.h> +#include "pytalloc.h" + +/* There's no Py_ssize_t in 2.4, apparently */ +#if PY_MAJOR_VERSION == 2 && PY_MINOR_VERSION < 5 +typedef int Py_ssize_t; +typedef inquiry lenfunc; +#endif + +#ifndef Py_RETURN_NONE +#define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None +#endif + +#define PyLoadparmContext_AsLoadparmContext(obj) py_talloc_get_type(obj, struct loadparm_context) + +PyAPI_DATA(PyTypeObject) PyLoadparmContext; +PyAPI_DATA(PyTypeObject) PyLoadparmService; + +PyObject *PyLoadparmService_FromService(struct loadparm_service *service) +{ + return py_talloc_import(&PyLoadparmService, service); +} + +static PyObject *py_lp_ctx_get_helper(struct loadparm_context *lp_ctx, const char *service_name, const char *param_name) +{ + struct parm_struct *parm = NULL; + void *parm_ptr = NULL; + int i; + + if (service_name != NULL) { + struct loadparm_service *service; + /* its a share parameter */ + service = lp_service(lp_ctx, service_name); + if (service == NULL) { + return NULL; + } + if (strchr(param_name, ':')) { + /* its a parametric option on a share */ + const char *type = talloc_strndup(lp_ctx, + param_name, + strcspn(param_name, ":")); + const char *option = strchr(param_name, ':') + 1; + const char *value; + if (type == NULL || option == NULL) { + return NULL; + } + value = lp_get_parametric(lp_ctx, service, type, option); + if (value == NULL) { + return NULL; + } + return PyString_FromString(value); + } + + parm = lp_parm_struct(param_name); + if (parm == NULL || parm->pclass == P_GLOBAL) { + return NULL; + } + parm_ptr = lp_parm_ptr(lp_ctx, service, parm); + } else if (strchr(param_name, ':')) { + /* its a global parametric option */ + const char *type = talloc_strndup(lp_ctx, + param_name, strcspn(param_name, ":")); + const char *option = strchr(param_name, ':') + 1; + const char *value; + if (type == NULL || option == NULL) { + return NULL; + } + value = lp_get_parametric(lp_ctx, NULL, type, option); + if (value == NULL) + return NULL; + return PyString_FromString(value); + } else { + /* its a global parameter */ + parm = lp_parm_struct(param_name); + if (parm == NULL) { + return NULL; + } + parm_ptr = lp_parm_ptr(lp_ctx, NULL, parm); + } + + if (parm == NULL || parm_ptr == NULL) { + return NULL; + } + + /* construct and return the right type of python object */ + switch (parm->type) { + case P_STRING: + case P_USTRING: + return PyString_FromString(*(char **)parm_ptr); + case P_BOOL: + return PyBool_FromLong(*(bool *)parm_ptr); + case P_INTEGER: + case P_OCTAL: + case P_BYTES: + return PyLong_FromLong(*(int *)parm_ptr); + case P_ENUM: + for (i=0; parm->enum_list[i].name; i++) { + if (*(int *)parm_ptr == parm->enum_list[i].value) { + return PyString_FromString(parm->enum_list[i].name); + } + } + return NULL; + case P_LIST: + { + int j; + const char **strlist = *(const char ***)parm_ptr; + PyObject *pylist = PyList_New(str_list_length(strlist)); + for (j = 0; strlist[j]; j++) + PyList_SetItem(pylist, j, + PyString_FromString(strlist[j])); + return pylist; + } + + break; + } + return NULL; + +} + +static PyObject *py_lp_ctx_load(py_talloc_Object *self, PyObject *args) +{ + char *filename; + bool ret; + if (!PyArg_ParseTuple(args, "s", &filename)) + return NULL; + + ret = lp_load(PyLoadparmContext_AsLoadparmContext(self), filename); + + if (!ret) { + PyErr_Format(PyExc_RuntimeError, "Unable to load file %s", filename); + return NULL; + } + Py_RETURN_NONE; +} + +static PyObject *py_lp_ctx_load_default(py_talloc_Object *self) +{ + bool ret; + ret = lp_load_default(PyLoadparmContext_AsLoadparmContext(self)); + + if (!ret) { + PyErr_SetString(PyExc_RuntimeError, "Unable to load default file"); + return NULL; + } + Py_RETURN_NONE; +} + +static PyObject *py_lp_ctx_get(py_talloc_Object *self, PyObject *args) +{ + char *param_name; + char *section_name = NULL; + PyObject *ret; + if (!PyArg_ParseTuple(args, "s|s", ¶m_name, §ion_name)) + return NULL; + + ret = py_lp_ctx_get_helper(PyLoadparmContext_AsLoadparmContext(self), section_name, param_name); + if (ret == NULL) + Py_RETURN_NONE; + return ret; +} + +static PyObject *py_lp_ctx_is_myname(py_talloc_Object *self, PyObject *args) +{ + char *name; + if (!PyArg_ParseTuple(args, "s", &name)) + return NULL; + + return PyBool_FromLong(lp_is_myname(PyLoadparmContext_AsLoadparmContext(self), name)); +} + +static PyObject *py_lp_ctx_is_mydomain(py_talloc_Object *self, PyObject *args) +{ + char *name; + if (!PyArg_ParseTuple(args, "s", &name)) + return NULL; + + return PyBool_FromLong(lp_is_mydomain(PyLoadparmContext_AsLoadparmContext(self), name)); +} + +static PyObject *py_lp_ctx_set(py_talloc_Object *self, PyObject *args) +{ + char *name, *value; + bool ret; + if (!PyArg_ParseTuple(args, "ss", &name, &value)) + return NULL; + + ret = lp_set_cmdline(PyLoadparmContext_AsLoadparmContext(self), name, value); + if (!ret) { + PyErr_SetString(PyExc_RuntimeError, "Unable to set parameter"); + return NULL; + } + + Py_RETURN_NONE; +} + +static PyObject *py_lp_ctx_private_path(py_talloc_Object *self, PyObject *args) +{ + char *name, *path; + PyObject *ret; + if (!PyArg_ParseTuple(args, "s", &name)) + return NULL; + + path = private_path(NULL, PyLoadparmContext_AsLoadparmContext(self), name); + ret = PyString_FromString(path); + talloc_free(path); + + return ret; +} + +static PyMethodDef py_lp_ctx_methods[] = { + { "load", (PyCFunction)py_lp_ctx_load, METH_VARARGS, + "S.load(filename) -> None\n" + "Load specified file." }, + { "load_default", (PyCFunction)py_lp_ctx_load_default, METH_NOARGS, + "S.load_default() -> None\n" + "Load default smb.conf file." }, + { "is_myname", (PyCFunction)py_lp_ctx_is_myname, METH_VARARGS, + "S.is_myname(name) -> bool\n" + "Check whether the specified name matches one of our netbios names." }, + { "is_mydomain", (PyCFunction)py_lp_ctx_is_mydomain, METH_VARARGS, + "S.is_mydomain(name) -> bool\n" + "Check whether the specified name matches our domain name." }, + { "get", (PyCFunction)py_lp_ctx_get, METH_VARARGS, + "S.get(name, service_name) -> value\n" + "Find specified parameter." }, + { "set", (PyCFunction)py_lp_ctx_set, METH_VARARGS, + "S.set(name, value) -> bool\n" + "Change a parameter." }, + { "private_path", (PyCFunction)py_lp_ctx_private_path, METH_VARARGS, + "S.private_path(name) -> path\n" }, + { NULL } +}; + +static PyObject *py_lp_ctx_default_service(py_talloc_Object *self, void *closure) +{ + return PyLoadparmService_FromService(lp_default_service(PyLoadparmContext_AsLoadparmContext(self))); +} + +static PyObject *py_lp_ctx_config_file(py_talloc_Object *self, void *closure) +{ + const char *configfile = lp_configfile(PyLoadparmContext_AsLoadparmContext(self)); + if (configfile == NULL) + Py_RETURN_NONE; + else + return PyString_FromString(configfile); +} + +static PyGetSetDef py_lp_ctx_getset[] = { + { discard_const_p(char, "default_service"), (getter)py_lp_ctx_default_service, NULL, NULL }, + { discard_const_p(char, "configfile"), (getter)py_lp_ctx_config_file, NULL, + discard_const_p(char, "Name of last config file that was loaded.") }, + { NULL } +}; + +static PyObject *py_lp_ctx_new(PyTypeObject *type, PyObject *args, PyObject *kwargs) +{ + return py_talloc_import(type, loadparm_init(NULL)); +} + +static Py_ssize_t py_lp_ctx_len(py_talloc_Object *self) +{ + return lp_numservices(PyLoadparmContext_AsLoadparmContext(self)); +} + +static PyObject *py_lp_ctx_getitem(py_talloc_Object *self, PyObject *name) +{ + struct loadparm_service *service; + if (!PyString_Check(name)) { + PyErr_SetString(PyExc_TypeError, "Only string subscripts are supported"); + return NULL; + } + service = lp_service(PyLoadparmContext_AsLoadparmContext(self), PyString_AsString(name)); + if (service == NULL) { + PyErr_SetString(PyExc_KeyError, "No such section"); + return NULL; + } + return PyLoadparmService_FromService(service); +} + +static PyMappingMethods py_lp_ctx_mapping = { + .mp_length = (lenfunc)py_lp_ctx_len, + .mp_subscript = (binaryfunc)py_lp_ctx_getitem, +}; + +PyTypeObject PyLoadparmContext = { + .tp_name = "LoadParm", + .tp_basicsize = sizeof(py_talloc_Object), + .tp_dealloc = py_talloc_dealloc, + .tp_getset = py_lp_ctx_getset, + .tp_methods = py_lp_ctx_methods, + .tp_new = py_lp_ctx_new, + .tp_as_mapping = &py_lp_ctx_mapping, + .tp_flags = Py_TPFLAGS_DEFAULT, +}; + +PyTypeObject PyLoadparmService = { + .tp_name = "LoadparmService", + .tp_dealloc = py_talloc_dealloc, + .tp_basicsize = sizeof(py_talloc_Object), + .tp_flags = Py_TPFLAGS_DEFAULT, +}; + +_PUBLIC_ struct loadparm_context *lp_from_py_object(PyObject *py_obj) +{ + struct loadparm_context *lp_ctx; + if (PyString_Check(py_obj)) { + lp_ctx = loadparm_init(NULL); + if (!lp_load(lp_ctx, PyString_AsString(py_obj))) { + talloc_free(lp_ctx); + PyErr_Format(PyExc_RuntimeError, + "Unable to load %s", PyString_AsString(py_obj)); + return NULL; + } + return lp_ctx; + } + + if (py_obj == Py_None) { + lp_ctx = loadparm_init(NULL); + /* We're not checking that loading the file succeeded *on purpose */ + lp_load_default(lp_ctx); + return lp_ctx; + } + + return PyLoadparmContext_AsLoadparmContext(py_obj); +} + +struct loadparm_context *py_default_loadparm_context(TALLOC_CTX *mem_ctx) +{ + struct loadparm_context *ret; + ret = loadparm_init(mem_ctx); + if (!lp_load_default(ret)) + return NULL; + return ret; +} + +static PyObject *py_default_path(PyObject *self) +{ + return PyString_FromString(lp_default_path()); +} + +static PyMethodDef pyparam_methods[] = { + { "default_path", (PyCFunction)py_default_path, METH_NOARGS, + "Returns the default smb.conf path." }, + { NULL } +}; + +void initparam(void) +{ + PyObject *m; + + if (PyType_Ready(&PyLoadparmContext) < 0) + return; + + m = Py_InitModule3("param", pyparam_methods, "Parsing and writing Samba configuration files."); + if (m == NULL) + return; + + Py_INCREF(&PyLoadparmContext); + PyModule_AddObject(m, "LoadParm", (PyObject *)&PyLoadparmContext); +} |