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/*
* Copyright (c) 2018 Balabit
*
* 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 2.1 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "python-logtemplate.h"
#include "python-logtemplate-options.h"
#include "python-logmsg.h"
#include "python-types.h"
#include "python-main.h"
#include "scratch-buffers.h"
#include "messages.h"
PyTypeObject py_log_template_type;
PyObject *PyExc_LogTemplate;
PyObject *
py_log_template_format(PyObject *s, PyObject *args, PyObject *kwrds)
{
PyLogTemplate *self = (PyLogTemplate *)s;
PyLogMessage *msg;
PyLogTemplateOptions *py_template_options = NULL;
gint tz = LTZ_SEND;
gint seqnum = 0;
static const gchar *kwlist[] = {"msg", "options", "tz", "seqnum", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwrds, "O|Oii", (gchar **)kwlist,
&msg, &py_template_options, &tz, &seqnum))
return NULL;
if (!py_is_log_message((PyObject *)msg))
{
PyErr_Format(PyExc_TypeError,
"LogMessage expected in the first parameter");
return NULL;
}
if (py_template_options && !py_is_log_template_options((PyObject *)py_template_options))
{
PyErr_Format(PyExc_TypeError,
"LogTemplateOptions expected in the second parameter");
return NULL;
}
LogTemplateOptions *template_options;
if (py_template_options)
template_options = &py_template_options->template_options;
else if (self->py_template_options)
template_options = &self->py_template_options->template_options;
else
template_options = NULL;
if (!template_options)
{
PyErr_Format(PyExc_RuntimeError,
"LogTemplateOptions must be provided either in the LogTemplate constructor or as parameter of format");
return NULL;
}
GString *result = scratch_buffers_alloc();
LogTemplateEvalOptions options = { template_options, tz, seqnum, NULL, LM_VT_STRING };
log_template_format(self->template, msg->msg, &options, result);
return py_string_from_string(result->str, result->len);
}
int
py_log_template_init(PyObject *s, PyObject *args, PyObject *kwds)
{
PyLogTemplate *self = (PyLogTemplate *)s;
const gchar *template_string;
PyLogTemplateOptions *py_template_options = NULL;
GlobalConfig *cfg = _py_get_config_from_main_module()->cfg;
if (!PyArg_ParseTuple(args, "s|O", &template_string, &py_template_options))
return -1;
if (py_template_options && !py_is_log_template_options((PyObject *)py_template_options))
{
PyErr_Format(PyExc_TypeError,
"LogTemplateOptions expected in the second parameter");
return -1;
}
LogTemplate *template = log_template_new(cfg, NULL);
GError *error = NULL;
if (!log_template_compile(template, template_string, &error))
{
PyErr_Format(PyExc_LogTemplate,
"Error compiling template: %s", error->message);
g_clear_error(&error);
log_template_unref(template);
return -1;
}
self->template = template;
self->py_template_options = py_template_options;
Py_XINCREF(py_template_options);
return 0;
}
PyObject *
py_log_template_str(PyObject *s)
{
PyLogTemplate *self = (PyLogTemplate *)s;
return py_string_from_string(self->template->template_str, -1);
}
void
py_log_template_free(PyLogTemplate *self)
{
log_template_unref(self->template);
Py_XDECREF(self->py_template_options);
Py_TYPE(self)->tp_free((PyObject *) self);
}
static PyMethodDef py_log_template_methods[] =
{
{ "format", (PyCFunction)py_log_template_format, METH_VARARGS | METH_KEYWORDS, "format template" },
{ NULL }
};
PyTypeObject py_log_template_type =
{
PyVarObject_HEAD_INIT(&PyType_Type, 0)
.tp_name = "LogTemplate",
.tp_basicsize = sizeof(PyLogTemplate),
.tp_dealloc = (destructor) py_log_template_free,
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
.tp_doc = "LogTemplate class encapsulating a syslog-ng template",
.tp_methods = py_log_template_methods,
.tp_new = PyType_GenericNew,
.tp_init = py_log_template_init,
.tp_str = py_log_template_str,
0,
};
void
py_log_template_global_init(void)
{
py_log_template_options_global_init();
PyType_Ready(&py_log_template_type);
PyModule_AddObject(PyImport_AddModule("_syslogng"), "LogTemplate", (PyObject *) &py_log_template_type);
PyExc_LogTemplate = PyErr_NewException("_syslogng.LogTemplateException", NULL, NULL);
PyModule_AddObject(PyImport_AddModule("_syslogng"), "LogTemplateException", (PyObject *) PyExc_LogTemplate);
}
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