Fix various Python-related bugs.

1 files changed, 495 insertions, 0 deletions

diff --git a/source4/param/pyparam.c b/source4/param/pyparam.c
new file mode 100644
index 0000000000..b432398065
--- /dev/null
+++ b/source4/param/pyparam.c
@@ -0,0 +1,495 @@
+/* 
+   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 "pytalloc.h"
+
+#define PyLoadparmContext_AsLoadparmContext(obj) py_talloc_get_ptr(obj)
+#define PyLoadparmContext_Check(obj) PyObject_TypeCheck(obj, &PyLoadparmContext)
+
+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->class == 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((struct loadparm_context *)self->ptr, filename);
+
+	if (!ret) {
+		PyErr_SetString(PyExc_RuntimeError, "Unable to load file");
+		return NULL;
+	}
+	return Py_None;
+}
+
+static PyObject *py_lp_ctx_load_default(py_talloc_Object *self)
+{
+	bool ret;
+        ret = lp_load_default(self->ptr);
+
+	if (!ret) {
+		PyErr_SetString(PyExc_RuntimeError, "Unable to load file");
+		return NULL;
+	}
+	return Py_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", &param_name, &section_name))
+		return NULL;
+
+	ret = py_lp_ctx_get_helper(self->ptr, section_name, param_name);
+	if (ret == NULL)
+		return Py_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(self->ptr, 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(self->ptr, name, value);
+	if (!ret) {
+		PyErr_SetString(PyExc_RuntimeError, "Unable to set parameter");
+		return NULL;
+        }
+
+	return Py_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, self->ptr, 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." },
+	{ "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((struct loadparm_context *)self->ptr));
+}
+
+static PyObject *py_lp_ctx_config_file(py_talloc_Object *self, void *closure)
+{
+	return PyString_FromString(lp_configfile(self->ptr));
+}
+
+static PyGetSetDef py_lp_ctx_getset[] = {
+	{ (char *)"default_service", (getter)py_lp_ctx_default_service, NULL, NULL },
+	{ (char *)"config_file", (getter)py_lp_ctx_config_file, NULL, 
+		(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(self->ptr);
+}
+
+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(self->ptr, 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 = "LoadparmContext",
+	.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,
+};
+
+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);
+            return NULL;
+        }
+        return lp_ctx;
+    }
+
+    if (py_obj == Py_None) {
+        lp_ctx = loadparm_init(NULL);
+        if (!lp_load_default(lp_ctx)) {
+            talloc_free(lp_ctx);
+            return NULL;
+        }
+        return lp_ctx;
+    }
+
+    if (PyLoadparmContext_Check(py_obj))
+	    return PyLoadparmContext_AsLoadparmContext(py_obj);
+
+    return NULL;
+}
+
+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;
+}
+
+void initparam(void)
+{
+	PyObject *m;
+
+	if (PyType_Ready(&PyLoadparmContext) < 0)
+		return;
+
+	m = Py_InitModule3("param", NULL, "Parsing and writing Samba configuration files.");
+	if (m == NULL)
+		return;
+
+	Py_INCREF(&PyLoadparmContext);
+	PyModule_AddObject(m, "LoadparmContext", (PyObject *)&PyLoadparmContext);
+}
+
+/*
+typedef struct loadparm_context {
+    %extend {
+        int use(struct param_context *param_ctx) { return param_use($self, param_ctx); }
+    }
+} loadparm_context;
+
+typedef struct loadparm_service {
+    %extend { 
+        const char *volume_label(struct loadparm_service *sDefault) { return volume_label($self, sDefault); }
+        const char *printername(struct loadparm_service *sDefault) { return lp_printername($self, sDefault); }
+        int maxprintjobs(struct loadparm_service *sDefault) { return lp_maxprintjobs($self, sDefault); } 
+    }
+} loadparm_service;
+
+%rename(ParamFile) param_context;
+
+%talloctype(param_context);
+typedef struct param_context {
+    %extend { 
+        param(TALLOC_CTX *mem_ctx) { return param_init(mem_ctx); }
+        %feature("docstring") add_section "S.get_section(name) -> section\n"
+                                          "Get an existing section.";
+        struct param_section *get_section(const char *name);
+        %feature("docstring") add_section "S.add_section(name) -> section\n"
+                                          "Add a new section.";
+        struct param_section *add_section(const char *name);
+        struct param_opt *get(const char *name, const char *section_name="global");
+        const char *get_string(const char *name, const char *section_name="global");
+        int set_string(const char *param, const char *value, const char *section="global");
+#ifdef SWIGPYTHON
+        int set(const char *parameter, PyObject *ob, const char *section_name="global")
+        {
+            struct param_opt *opt = param_get_add($self, parameter, section_name);
+
+            talloc_free(opt->value);
+            opt->value = talloc_strdup(opt, PyString_AsString(PyObject_Str(ob)));
+
+            return 0;
+        }
+        
+#endif
+
+        %feature("docstring") first_section "S.first_section() -> section\n"
+                                          "Find first section";
+        struct param_section *first_section() { return $self->sections; }
+        %feature("docstring") next_section "S.next_section(prev) -> section\n"
+                                          "Find next section";
+        struct param_section *next_section(struct param_section *s) { return s->next; }
+
+        %feature("docstring") read "S.read(filename) -> bool\n"
+                                          "Read a filename.";
+        int read(const char *fn);
+        %feature("docstring") read "S.write(filename) -> bool\n"
+                                          "Write this object to a file.";
+        int write(const char *fn);
+    }
+    %pythoncode {
+        def __getitem__(self, name):
+            ret = self.get_section(name)
+            if ret is None:
+                raise KeyError("No such section %s" % name)
+            return ret
+
+        class SectionIterator:
+            def __init__(self, param):
+                self.param = param
+                self.key = None
+
+            def __iter__(self):
+                return self
+                
+            def next(self):
+                if self.key is None:
+                    self.key = self.param.first_section()
+                    if self.key is None:
+                        raise StopIteration
+                    return self.key
+                else:
+                    self.key = self.param.next_section(self.key)
+                    if self.key is None:
+                        raise StopIteration
+                    return self.key
+
+        def __iter__(self):
+            return self.SectionIterator(self)
+    }
+} param;
+
+%talloctype(param_opt);
+
+typedef struct param_opt {
+    %immutable key;
+    %immutable value;
+    const char *key, *value;
+    %extend {
+#ifdef SWIGPYTHON
+        const char *__str__() { return $self->value; }
+#endif
+    }
+} param_opt;
+
+%talloctype(param);
+typedef struct param_section {
+    %immutable name;
+    const char *name;
+    %extend {
+        struct param_opt *get(const char *name);
+        struct param_opt *first_parameter() { return $self->parameters; }
+        struct param_opt *next_parameter(struct param_opt *s) { return s->next; }
+    }
+    %pythoncode {
+        def __getitem__(self, name):
+            ret = self.get(name)
+            if ret is None:
+                raise KeyError("No such option %s" % name)
+            return ret
+
+        class ParamIterator:
+            def __init__(self, section):
+                self.section = section
+                self.key = None
+
+            def __iter__(self):
+                return self
+                
+            def next(self):
+                if self.key is None:
+                    self.key = self.section.first_parameter()
+                    if self.key is None:
+                        raise StopIteration
+                    return self.key
+                else:
+                    self.key = self.section.next_parameter(self.key)
+                    if self.key is None:
+                        raise StopIteration
+                    return self.key
+
+        def __iter__(self):
+            return self.ParamIterator(self)
+    }
+} param_section;
+*/