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-rw-r--r--lib/tdb/pytdb.c830
1 files changed, 830 insertions, 0 deletions
diff --git a/lib/tdb/pytdb.c b/lib/tdb/pytdb.c
new file mode 100644
index 0000000..4d75d7a
--- /dev/null
+++ b/lib/tdb/pytdb.c
@@ -0,0 +1,830 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Python interface to tdb.
+
+ Copyright (C) 2004-2006 Tim Potter <tpot@samba.org>
+ Copyright (C) 2007-2008 Jelmer Vernooij <jelmer@samba.org>
+
+ ** NOTE! The following LGPL license applies to the tdb
+ ** library. This does NOT imply that all of Samba is released
+ ** under the LGPL
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 3 of the License, or (at your option) any later version.
+
+ This library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "lib/replace/system/python.h"
+#include "replace.h"
+#include "system/filesys.h"
+
+/* Include tdb headers */
+#include <tdb.h>
+
+/* discard signature of 'func' in favour of 'target_sig' */
+#define PY_DISCARD_FUNC_SIG(target_sig, func) (target_sig)(void(*)(void))func
+
+typedef struct {
+ PyObject_HEAD
+ TDB_CONTEXT *ctx;
+ bool closed;
+} PyTdbObject;
+
+static PyTypeObject PyTdb;
+
+static void PyErr_SetTDBError(TDB_CONTEXT *tdb)
+{
+ PyErr_SetObject(PyExc_RuntimeError,
+ Py_BuildValue("(i,s)", tdb_error(tdb), tdb_errorstr(tdb)));
+}
+
+static TDB_DATA PyBytes_AsTDB_DATA(PyObject *data)
+{
+ TDB_DATA ret;
+ ret.dptr = (unsigned char *)PyBytes_AsString(data);
+ ret.dsize = PyBytes_Size(data);
+ return ret;
+}
+
+static PyObject *PyBytes_FromTDB_DATA(TDB_DATA data)
+{
+ if (data.dptr == NULL && data.dsize == 0) {
+ Py_RETURN_NONE;
+ } else {
+ PyObject *ret = PyBytes_FromStringAndSize((const char *)data.dptr,
+ data.dsize);
+ free(data.dptr);
+ return ret;
+ }
+}
+
+#define PyErr_TDB_ERROR_IS_ERR_RAISE(ret, tdb) \
+ if (ret != 0) { \
+ PyErr_SetTDBError(tdb); \
+ return NULL; \
+ }
+
+#define PyErr_TDB_RAISE_IF_CLOSED(self) \
+ if (self->closed) { \
+ PyErr_SetObject(PyExc_RuntimeError, \
+ Py_BuildValue("(i,s)", TDB_ERR_IO, "Database is already closed")); \
+ return NULL; \
+ }
+
+#define PyErr_TDB_RAISE_RETURN_MINUS_1_IF_CLOSED(self) \
+ if (self->closed) { \
+ PyErr_SetObject(PyExc_RuntimeError, \
+ Py_BuildValue("(i,s)", TDB_ERR_IO, "Database is already closed")); \
+ return -1; \
+ }
+
+static PyObject *py_tdb_open(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+ char *name = NULL;
+ int hash_size = 0, tdb_flags = TDB_DEFAULT, flags = O_RDWR, mode = 0600;
+ TDB_CONTEXT *ctx;
+ PyTdbObject *ret;
+ const char *_kwnames[] = { "name", "hash_size", "tdb_flags", "flags", "mode", NULL };
+ char **kwnames = discard_const_p(char *, _kwnames);
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|siiii", kwnames, &name, &hash_size, &tdb_flags, &flags, &mode))
+ return NULL;
+
+ if (name == NULL) {
+ tdb_flags |= TDB_INTERNAL;
+ }
+
+ ctx = tdb_open(name, hash_size, tdb_flags, flags, mode);
+ if (ctx == NULL) {
+ PyErr_SetFromErrno(PyExc_IOError);
+ return NULL;
+ }
+
+ ret = PyObject_New(PyTdbObject, &PyTdb);
+ if (!ret) {
+ tdb_close(ctx);
+ return NULL;
+ }
+
+ ret->ctx = ctx;
+ ret->closed = false;
+ return (PyObject *)ret;
+}
+
+static PyObject *obj_transaction_cancel(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ ret = tdb_transaction_cancel(self->ctx);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_transaction_commit(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ ret = tdb_transaction_commit(self->ctx);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_transaction_prepare_commit(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ ret = tdb_transaction_prepare_commit(self->ctx);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_transaction_start(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ ret = tdb_transaction_start(self->ctx);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_reopen(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ ret = tdb_reopen(self->ctx);
+ if (ret != 0) {
+ self->closed = true;
+ PyErr_SetObject(PyExc_RuntimeError,
+ Py_BuildValue("(i,s)",
+ TDB_ERR_IO,
+ "Failed to reopen database"));
+ return NULL;
+ }
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_lockall(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ ret = tdb_lockall(self->ctx);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_unlockall(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ ret = tdb_unlockall(self->ctx);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_lockall_read(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ ret = tdb_lockall_read(self->ctx);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_unlockall_read(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ int ret = tdb_unlockall_read(self->ctx);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_close(PyTdbObject *self, PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+ if (self->closed)
+ Py_RETURN_NONE;
+ ret = tdb_close(self->ctx);
+ self->closed = true;
+ if (ret != 0) {
+ PyErr_SetObject(PyExc_RuntimeError,
+ Py_BuildValue("(i,s)",
+ TDB_ERR_IO,
+ "Failed to close database"));
+ return NULL;
+ }
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_get(PyTdbObject *self, PyObject *args)
+{
+ TDB_DATA key;
+ PyObject *py_key;
+
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ if (!PyArg_ParseTuple(args, "O", &py_key))
+ return NULL;
+
+ key = PyBytes_AsTDB_DATA(py_key);
+ if (!key.dptr)
+ return NULL;
+
+ return PyBytes_FromTDB_DATA(tdb_fetch(self->ctx, key));
+}
+
+static PyObject *obj_append(PyTdbObject *self, PyObject *args)
+{
+ TDB_DATA key, data;
+ PyObject *py_key, *py_data;
+ int ret;
+
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ if (!PyArg_ParseTuple(args, "OO", &py_key, &py_data))
+ return NULL;
+
+ key = PyBytes_AsTDB_DATA(py_key);
+ if (!key.dptr)
+ return NULL;
+ data = PyBytes_AsTDB_DATA(py_data);
+ if (!data.dptr)
+ return NULL;
+
+ ret = tdb_append(self->ctx, key, data);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_firstkey(PyTdbObject *self, PyObject *Py_UNUSED(ignored))
+{
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ return PyBytes_FromTDB_DATA(tdb_firstkey(self->ctx));
+}
+
+static PyObject *obj_nextkey(PyTdbObject *self, PyObject *args)
+{
+ TDB_DATA key;
+ PyObject *py_key;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ if (!PyArg_ParseTuple(args, "O", &py_key))
+ return NULL;
+
+ key = PyBytes_AsTDB_DATA(py_key);
+ if (!key.dptr)
+ return NULL;
+
+ return PyBytes_FromTDB_DATA(tdb_nextkey(self->ctx, key));
+}
+
+static PyObject *obj_delete(PyTdbObject *self, PyObject *args)
+{
+ TDB_DATA key;
+ PyObject *py_key;
+ int ret;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ if (!PyArg_ParseTuple(args, "O", &py_key))
+ return NULL;
+
+ key = PyBytes_AsTDB_DATA(py_key);
+ if (!key.dptr)
+ return NULL;
+ ret = tdb_delete(self->ctx, key);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static int obj_contains(PyTdbObject *self, PyObject *py_key)
+{
+ TDB_DATA key;
+ int ret;
+ PyErr_TDB_RAISE_RETURN_MINUS_1_IF_CLOSED(self);
+
+ key = PyBytes_AsTDB_DATA(py_key);
+ if (!key.dptr) {
+ PyErr_BadArgument();
+ return -1;
+ }
+ ret = tdb_exists(self->ctx, key);
+ if (ret)
+ return 1;
+ return 0;
+}
+
+static PyObject *obj_store(PyTdbObject *self, PyObject *args)
+{
+ TDB_DATA key, value;
+ int ret;
+ int flag = TDB_REPLACE;
+ PyObject *py_key, *py_value;
+
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ if (!PyArg_ParseTuple(args, "OO|i", &py_key, &py_value, &flag))
+ return NULL;
+
+ key = PyBytes_AsTDB_DATA(py_key);
+ if (!key.dptr)
+ return NULL;
+ value = PyBytes_AsTDB_DATA(py_value);
+ if (!value.dptr)
+ return NULL;
+
+ ret = tdb_store(self->ctx, key, value, flag);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_storev(PyTdbObject *self, PyObject *args)
+{
+ TDB_DATA key, *values, value;
+ int ret;
+ int flag = TDB_REPLACE;
+ Py_ssize_t num_values, i;
+ PyObject *py_key, *py_values, *py_value;
+
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ if (!PyArg_ParseTuple(
+ args, "OO!|i", &py_key, &PyList_Type, &py_values, &flag)) {
+ return NULL;
+ }
+
+ num_values = PyList_Size(py_values);
+
+ key = PyBytes_AsTDB_DATA(py_key);
+ if (key.dptr == NULL) {
+ return NULL;
+ }
+
+ if (SSIZE_MAX/sizeof(TDB_DATA) < num_values) {
+ PyErr_SetFromErrno(PyExc_OverflowError);
+ return NULL;
+ }
+ values = malloc(sizeof(TDB_DATA) * num_values);
+ if (values == NULL) {
+ PyErr_NoMemory();
+ return NULL;
+ }
+ for (i=0; i<num_values; i++) {
+ py_value = PyList_GetItem(py_values, i);
+ value = PyBytes_AsTDB_DATA(py_value);
+ if (!value.dptr) {
+ free(values);
+ return NULL;
+ }
+ values[i] = value;
+ }
+
+ ret = tdb_storev(self->ctx, key, values, num_values, flag);
+ free(values);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_add_flags(PyTdbObject *self, PyObject *args)
+{
+ unsigned flags;
+
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ if (!PyArg_ParseTuple(args, "I", &flags))
+ return NULL;
+
+ tdb_add_flags(self->ctx, flags);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_remove_flags(PyTdbObject *self, PyObject *args)
+{
+ unsigned flags;
+
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ if (!PyArg_ParseTuple(args, "I", &flags))
+ return NULL;
+
+ tdb_remove_flags(self->ctx, flags);
+ Py_RETURN_NONE;
+}
+
+typedef struct {
+ PyObject_HEAD
+ TDB_DATA current;
+ PyTdbObject *iteratee;
+} PyTdbIteratorObject;
+
+static PyObject *tdb_iter_next(PyTdbIteratorObject *self)
+{
+ TDB_DATA current;
+ PyObject *ret;
+ if (self->current.dptr == NULL && self->current.dsize == 0)
+ return NULL;
+ current = self->current;
+ self->current = tdb_nextkey(self->iteratee->ctx, self->current);
+ ret = PyBytes_FromTDB_DATA(current);
+ return ret;
+}
+
+static void tdb_iter_dealloc(PyTdbIteratorObject *self)
+{
+ Py_CLEAR(self->iteratee);
+ PyObject_Del(self);
+}
+
+PyTypeObject PyTdbIterator = {
+ .tp_name = "Iterator",
+ .tp_basicsize = sizeof(PyTdbIteratorObject),
+ .tp_iternext = (iternextfunc)tdb_iter_next,
+ .tp_dealloc = (destructor)tdb_iter_dealloc,
+ .tp_flags = Py_TPFLAGS_DEFAULT,
+ .tp_iter = PyObject_SelfIter,
+};
+
+static PyObject *tdb_object_iter(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ PyTdbIteratorObject *ret;
+
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+
+ ret = PyObject_New(PyTdbIteratorObject, &PyTdbIterator);
+ if (!ret)
+ return NULL;
+ ret->current = tdb_firstkey(self->ctx);
+ ret->iteratee = self;
+ Py_INCREF(self);
+ return (PyObject *)ret;
+}
+
+static PyObject *obj_clear(PyTdbObject *self, PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ ret = tdb_wipe_all(self->ctx);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_repack(PyTdbObject *self, PyObject *Py_UNUSED(ignored))
+{
+ int ret;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ ret = tdb_repack(self->ctx);
+ PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_enable_seqnum(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ tdb_enable_seqnum(self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyObject *obj_increment_seqnum_nonblock(PyTdbObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ tdb_increment_seqnum_nonblock(self->ctx);
+ Py_RETURN_NONE;
+}
+
+static PyMethodDef tdb_object_methods[] = {
+ { "transaction_cancel", (PyCFunction)obj_transaction_cancel, METH_NOARGS,
+ "S.transaction_cancel() -> None\n"
+ "Cancel the currently active transaction." },
+ { "transaction_commit", (PyCFunction)obj_transaction_commit, METH_NOARGS,
+ "S.transaction_commit() -> None\n"
+ "Commit the currently active transaction." },
+ { "transaction_prepare_commit", (PyCFunction)obj_transaction_prepare_commit, METH_NOARGS,
+ "S.transaction_prepare_commit() -> None\n"
+ "Prepare to commit the currently active transaction" },
+ { "transaction_start", (PyCFunction)obj_transaction_start, METH_NOARGS,
+ "S.transaction_start() -> None\n"
+ "Start a new transaction." },
+ { "reopen", (PyCFunction)obj_reopen, METH_NOARGS, "Reopen this file." },
+ { "lock_all", (PyCFunction)obj_lockall, METH_NOARGS, NULL },
+ { "unlock_all", (PyCFunction)obj_unlockall, METH_NOARGS, NULL },
+ { "read_lock_all", (PyCFunction)obj_lockall_read, METH_NOARGS, NULL },
+ { "read_unlock_all", (PyCFunction)obj_unlockall_read, METH_NOARGS, NULL },
+ { "close", (PyCFunction)obj_close, METH_NOARGS, NULL },
+ { "get", (PyCFunction)obj_get, METH_VARARGS, "S.get(key) -> value\n"
+ "Fetch a value." },
+ { "append", (PyCFunction)obj_append, METH_VARARGS, "S.append(key, value) -> None\n"
+ "Append data to an existing key." },
+ { "firstkey", (PyCFunction)obj_firstkey, METH_NOARGS, "S.firstkey() -> data\n"
+ "Return the first key in this database." },
+ { "nextkey", (PyCFunction)obj_nextkey, METH_VARARGS, "S.nextkey(key) -> data\n"
+ "Return the next key in this database." },
+ { "delete", (PyCFunction)obj_delete, METH_VARARGS, "S.delete(key) -> None\n"
+ "Delete an entry." },
+ { "store", (PyCFunction)obj_store, METH_VARARGS, "S.store(key, data, flag=REPLACE) -> None"
+ "Store data." },
+ { "storev", (PyCFunction)obj_storev, METH_VARARGS, "S.storev(key, data, flag=REPLACE) -> None"
+ "Store several data." },
+ { "add_flags", (PyCFunction)obj_add_flags, METH_VARARGS, "S.add_flags(flags) -> None" },
+ { "remove_flags", (PyCFunction)obj_remove_flags, METH_VARARGS, "S.remove_flags(flags) -> None" },
+ { "keys", (PyCFunction)tdb_object_iter, METH_NOARGS, "S.keys() -> iterator" },
+ { "clear", (PyCFunction)obj_clear, METH_NOARGS, "S.clear() -> None\n"
+ "Wipe the entire database." },
+ { "repack", (PyCFunction)obj_repack, METH_NOARGS, "S.repack() -> None\n"
+ "Repack the entire database." },
+ { "enable_seqnum", (PyCFunction)obj_enable_seqnum, METH_NOARGS,
+ "S.enable_seqnum() -> None" },
+ { "increment_seqnum_nonblock", (PyCFunction)obj_increment_seqnum_nonblock, METH_NOARGS,
+ "S.increment_seqnum_nonblock() -> None" },
+ {0}
+};
+
+static PyObject *obj_get_hash_size(PyTdbObject *self, void *closure)
+{
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ return PyLong_FromLong(tdb_hash_size(self->ctx));
+}
+
+static int obj_set_max_dead(PyTdbObject *self, PyObject *max_dead, void *closure)
+{
+ PyErr_TDB_RAISE_RETURN_MINUS_1_IF_CLOSED(self);
+ if (!PyLong_Check(max_dead))
+ return -1;
+ tdb_set_max_dead(self->ctx, PyLong_AsLong(max_dead));
+ return 0;
+}
+
+static PyObject *obj_get_map_size(PyTdbObject *self, void *closure)
+{
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ return PyLong_FromLong(tdb_map_size(self->ctx));
+}
+
+static PyObject *obj_get_freelist_size(PyTdbObject *self, void *closure)
+{
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ return PyLong_FromLong(tdb_freelist_size(self->ctx));
+}
+
+static PyObject *obj_get_flags(PyTdbObject *self, void *closure)
+{
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ return PyLong_FromLong(tdb_get_flags(self->ctx));
+}
+
+static PyObject *obj_get_filename(PyTdbObject *self, void *closure)
+{
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ return PyBytes_FromString(tdb_name(self->ctx));
+}
+
+static PyObject *obj_get_seqnum(PyTdbObject *self, void *closure)
+{
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ return PyLong_FromLong(tdb_get_seqnum(self->ctx));
+}
+
+static PyObject *obj_get_text(PyTdbObject *self, void *closure)
+{
+ PyObject *mod, *cls, *inst;
+ mod = PyImport_ImportModule("_tdb_text");
+ if (mod == NULL)
+ return NULL;
+ cls = PyObject_GetAttrString(mod, "TdbTextWrapper");
+ if (cls == NULL) {
+ Py_DECREF(mod);
+ return NULL;
+ }
+ inst = PyObject_CallFunction(cls, discard_const_p(char, "O"), self);
+ Py_DECREF(mod);
+ Py_DECREF(cls);
+ return inst;
+}
+
+static PyGetSetDef tdb_object_getsetters[] = {
+ {
+ .name = discard_const_p(char, "hash_size"),
+ .get = (getter)obj_get_hash_size,
+ },
+ {
+ .name = discard_const_p(char, "map_size"),
+ .get = (getter)obj_get_map_size,
+ },
+ {
+ .name = discard_const_p(char, "freelist_size"),
+ .get = (getter)obj_get_freelist_size,
+ },
+ {
+ .name = discard_const_p(char, "flags"),
+ .get = (getter)obj_get_flags,
+ },
+ {
+ .name = discard_const_p(char, "max_dead"),
+ .set = (setter)obj_set_max_dead,
+ },
+ {
+ .name = discard_const_p(char, "filename"),
+ .get = (getter)obj_get_filename,
+ .doc = discard_const_p(char, "The filename of this TDB file."),
+ },
+ {
+ .name = discard_const_p(char, "seqnum"),
+ .get = (getter)obj_get_seqnum,
+ },
+ {
+ .name = discard_const_p(char, "text"),
+ .get = (getter)obj_get_text,
+ },
+ { .name = NULL }
+};
+
+static PyObject *tdb_object_repr(PyTdbObject *self)
+{
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ if (tdb_get_flags(self->ctx) & TDB_INTERNAL) {
+ return PyUnicode_FromString("Tdb(<internal>)");
+ } else {
+ return PyUnicode_FromFormat("Tdb('%s')", tdb_name(self->ctx));
+ }
+}
+
+static void tdb_object_dealloc(PyTdbObject *self)
+{
+ if (!self->closed)
+ tdb_close(self->ctx);
+ Py_TYPE(self)->tp_free(self);
+}
+
+static PyObject *obj_getitem(PyTdbObject *self, PyObject *key)
+{
+ TDB_DATA tkey, val;
+ PyErr_TDB_RAISE_IF_CLOSED(self);
+ if (!PyBytes_Check(key)) {
+ PyErr_SetString(PyExc_TypeError, "Expected bytestring as key");
+ return NULL;
+ }
+
+ tkey.dptr = (unsigned char *)PyBytes_AsString(key);
+ tkey.dsize = PyBytes_Size(key);
+
+ val = tdb_fetch(self->ctx, tkey);
+ if (val.dptr == NULL) {
+ /*
+ * if the key doesn't exist raise KeyError(key) to be
+ * consistent with python dict
+ */
+ PyErr_SetObject(PyExc_KeyError, key);
+ return NULL;
+ } else {
+ return PyBytes_FromTDB_DATA(val);
+ }
+}
+
+static int obj_setitem(PyTdbObject *self, PyObject *key, PyObject *value)
+{
+ TDB_DATA tkey, tval;
+ int ret;
+ PyErr_TDB_RAISE_RETURN_MINUS_1_IF_CLOSED(self);
+ if (!PyBytes_Check(key)) {
+ PyErr_SetString(PyExc_TypeError, "Expected bytestring as key");
+ return -1;
+ }
+
+ tkey = PyBytes_AsTDB_DATA(key);
+
+ if (value == NULL) {
+ ret = tdb_delete(self->ctx, tkey);
+ } else {
+ if (!PyBytes_Check(value)) {
+ PyErr_SetString(PyExc_TypeError, "Expected string as value");
+ return -1;
+ }
+
+ tval = PyBytes_AsTDB_DATA(value);
+
+ ret = tdb_store(self->ctx, tkey, tval, TDB_REPLACE);
+ }
+
+ if (ret != 0) {
+ PyErr_SetTDBError(self->ctx);
+ return -1;
+ }
+
+ return ret;
+}
+
+static PyMappingMethods tdb_object_mapping = {
+ .mp_subscript = (binaryfunc)obj_getitem,
+ .mp_ass_subscript = (objobjargproc)obj_setitem,
+};
+static PySequenceMethods tdb_object_seq = {
+ .sq_contains = (objobjproc)obj_contains,
+};
+static PyTypeObject PyTdb = {
+ .tp_name = "tdb.Tdb",
+ .tp_basicsize = sizeof(PyTdbObject),
+ .tp_methods = tdb_object_methods,
+ .tp_getset = tdb_object_getsetters,
+ .tp_new = py_tdb_open,
+ .tp_doc = "A TDB file",
+ .tp_repr = (reprfunc)tdb_object_repr,
+ .tp_dealloc = (destructor)tdb_object_dealloc,
+ .tp_as_mapping = &tdb_object_mapping,
+ .tp_as_sequence = &tdb_object_seq,
+ .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
+ .tp_iter = PY_DISCARD_FUNC_SIG(getiterfunc,tdb_object_iter),
+};
+
+static PyMethodDef tdb_methods[] = {
+ {
+ .ml_name = "open",
+ .ml_meth = PY_DISCARD_FUNC_SIG(PyCFunction, py_tdb_open),
+ .ml_flags = METH_VARARGS|METH_KEYWORDS,
+ .ml_doc = "open(name, hash_size=0, tdb_flags=TDB_DEFAULT, "
+ "flags=O_RDWR, mode=0600)\nOpen a TDB file."
+ },
+ { .ml_name = NULL }
+};
+
+#define MODULE_DOC "simple key-value database that supports multiple writers."
+
+static struct PyModuleDef moduledef = {
+ PyModuleDef_HEAD_INIT,
+ .m_name = "tdb",
+ .m_doc = MODULE_DOC,
+ .m_size = -1,
+ .m_methods = tdb_methods,
+};
+
+PyObject* module_init(void);
+PyObject* module_init(void)
+{
+ PyObject *m;
+
+ if (PyType_Ready(&PyTdb) < 0)
+ return NULL;
+
+ if (PyType_Ready(&PyTdbIterator) < 0)
+ return NULL;
+
+ m = PyModule_Create(&moduledef);
+ if (m == NULL)
+ return NULL;
+
+ PyModule_AddIntConstant(m, "REPLACE", TDB_REPLACE);
+ PyModule_AddIntConstant(m, "INSERT", TDB_INSERT);
+ PyModule_AddIntConstant(m, "MODIFY", TDB_MODIFY);
+
+ PyModule_AddIntConstant(m, "DEFAULT", TDB_DEFAULT);
+ PyModule_AddIntConstant(m, "CLEAR_IF_FIRST", TDB_CLEAR_IF_FIRST);
+ PyModule_AddIntConstant(m, "INTERNAL", TDB_INTERNAL);
+ PyModule_AddIntConstant(m, "NOLOCK", TDB_NOLOCK);
+ PyModule_AddIntConstant(m, "NOMMAP", TDB_NOMMAP);
+ PyModule_AddIntConstant(m, "CONVERT", TDB_CONVERT);
+ PyModule_AddIntConstant(m, "BIGENDIAN", TDB_BIGENDIAN);
+ PyModule_AddIntConstant(m, "NOSYNC", TDB_NOSYNC);
+ PyModule_AddIntConstant(m, "SEQNUM", TDB_SEQNUM);
+ PyModule_AddIntConstant(m, "VOLATILE", TDB_VOLATILE);
+ PyModule_AddIntConstant(m, "ALLOW_NESTING", TDB_ALLOW_NESTING);
+ PyModule_AddIntConstant(m, "DISALLOW_NESTING", TDB_DISALLOW_NESTING);
+ PyModule_AddIntConstant(m, "INCOMPATIBLE_HASH", TDB_INCOMPATIBLE_HASH);
+
+ PyModule_AddStringConstant(m, "__docformat__", "restructuredText");
+
+ PyModule_AddStringConstant(m, "__version__", PACKAGE_VERSION);
+
+ Py_INCREF(&PyTdb);
+ PyModule_AddObject(m, "Tdb", (PyObject *)&PyTdb);
+
+ Py_INCREF(&PyTdbIterator);
+
+ return m;
+}
+
+
+PyMODINIT_FUNC PyInit_tdb(void);
+PyMODINIT_FUNC PyInit_tdb(void)
+{
+ return module_init();
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 00:15:19 +0000