source: vendor/3.6.23/source4/scripting/python/pyglue.c

/* 
   Unix SMB/CIFS implementation.
   Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
   Copyright (C) Matthias Dieter Wallnöfer          2009
   
   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 <Python.h>
#include "includes.h"
#include "version.h"
#include "param/pyparam.h"
#include "lib/socket/netif.h"

void init_glue(void);

static PyObject *py_generate_random_str(PyObject *self, PyObject *args)
{
        int len;
        PyObject *ret;
        char *retstr;
        if (!PyArg_ParseTuple(args, "i", &len))
                return NULL;

        retstr = generate_random_str(NULL, len);
        ret = PyString_FromString(retstr);
        talloc_free(retstr);
        return ret;
}

static PyObject *py_generate_random_password(PyObject *self, PyObject *args)
{
        int min, max;
        PyObject *ret;
        char *retstr;
        if (!PyArg_ParseTuple(args, "ii", &min, &max))
                return NULL;

        retstr = generate_random_password(NULL, min, max);
        if (retstr == NULL) {
                return NULL;
        }
        ret = PyString_FromString(retstr);
        talloc_free(retstr);
        return ret;
}

static PyObject *py_unix2nttime(PyObject *self, PyObject *args)
{
        time_t t;
        NTTIME nt;
        if (!PyArg_ParseTuple(args, "I", &t))
                return NULL;

        unix_to_nt_time(&nt, t);

        return PyLong_FromLongLong((uint64_t)nt);
}

static PyObject *py_nttime2unix(PyObject *self, PyObject *args)
{
        time_t t;
        NTTIME nt;
        if (!PyArg_ParseTuple(args, "K", &nt))
                return NULL;

        t = nt_time_to_unix(nt);

        return PyInt_FromLong((uint64_t)t);
}

static PyObject *py_nttime2string(PyObject *self, PyObject *args)
{
        PyObject *ret;
        NTTIME nt;
        TALLOC_CTX *tmp_ctx;
        const char *string;
        if (!PyArg_ParseTuple(args, "K", &nt))
                return NULL;

        tmp_ctx = talloc_new(NULL);
        if (tmp_ctx == NULL) {
                PyErr_NoMemory();
                return NULL;
        }

        string = nt_time_string(tmp_ctx, nt);
        ret =  PyString_FromString(string);

        talloc_free(tmp_ctx);

        return ret;
}

static PyObject *py_set_debug_level(PyObject *self, PyObject *args)
{
        unsigned level;
        if (!PyArg_ParseTuple(args, "I", &level))
                return NULL;
        (DEBUGLEVEL) = level;
        Py_RETURN_NONE;
}

static PyObject *py_get_debug_level(PyObject *self)
{
        return PyInt_FromLong(DEBUGLEVEL);
}

/*
  return the list of interface IPs we have configured
  takes an loadparm context, returns a list of IPs in string form

  Does not return addresses on 127.0.0.0/8
 */
static PyObject *py_interface_ips(PyObject *self, PyObject *args)
{
        PyObject *pylist;
        int count;
        TALLOC_CTX *tmp_ctx;
        PyObject *py_lp_ctx;
        struct loadparm_context *lp_ctx;
        struct interface *ifaces;
        int i, ifcount;
        int all_interfaces;

        if (!PyArg_ParseTuple(args, "Oi", &py_lp_ctx, &all_interfaces))
                return NULL;

        tmp_ctx = talloc_new(NULL);
        if (tmp_ctx == NULL) {
                PyErr_NoMemory();
                return NULL;
        }

        lp_ctx = lpcfg_from_py_object(tmp_ctx, py_lp_ctx);
        if (lp_ctx == NULL) {
                talloc_free(tmp_ctx);
                return NULL;
        }

        load_interfaces(tmp_ctx, lpcfg_interfaces(lp_ctx), &ifaces);

        count = iface_count(ifaces);

        /* first count how many are not loopback addresses */
        for (ifcount = i = 0; i<count; i++) {
                const char *ip = iface_n_ip(ifaces, i);
                if (!(!all_interfaces && iface_same_net(ip, "127.0.0.1", "255.0.0.0"))) {
                        ifcount++;
                }
        }

        pylist = PyList_New(ifcount);
        for (ifcount = i = 0; i<count; i++) {
                const char *ip = iface_n_ip(ifaces, i);
                if (!(!all_interfaces && iface_same_net(ip, "127.0.0.1", "255.0.0.0"))) {
                        PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
                        ifcount++;
                }
        }
        talloc_free(tmp_ctx);
        return pylist;
}

static PyMethodDef py_misc_methods[] = {
        { "generate_random_str", (PyCFunction)py_generate_random_str, METH_VARARGS,
                "generate_random_str(len) -> string\n"
                "Generate random string with specified length." },
        { "generate_random_password", (PyCFunction)py_generate_random_password,
                METH_VARARGS, "generate_random_password(min, max) -> string\n"
                "Generate random password with a length >= min and <= max." },
        { "unix2nttime", (PyCFunction)py_unix2nttime, METH_VARARGS,
                "unix2nttime(timestamp) -> nttime" },
        { "nttime2unix", (PyCFunction)py_nttime2unix, METH_VARARGS,
                "nttime2unix(nttime) -> timestamp" },
        { "nttime2string", (PyCFunction)py_nttime2string, METH_VARARGS,
                "nttime2string(nttime) -> string" },
        { "set_debug_level", (PyCFunction)py_set_debug_level, METH_VARARGS,
                "set debug level" },
        { "get_debug_level", (PyCFunction)py_get_debug_level, METH_NOARGS,
                "get debug level" },
        { "interface_ips", (PyCFunction)py_interface_ips, METH_VARARGS,
                "get interface IP address list"},
        { NULL }
};

void init_glue(void)
{
        PyObject *m;

        debug_setup_talloc_log();

        m = Py_InitModule3("_glue", py_misc_methods, 
                           "Python bindings for miscellaneous Samba functions.");
        if (m == NULL)
                return;

        PyModule_AddObject(m, "version",
                                           PyString_FromString(SAMBA_VERSION_STRING));

        /* one of the most annoying things about python scripts is
           that they don't die when you hit control-C. This fixes that
           sillyness. As we do all database operations using
           transactions, this is also safe. 
        */
        signal(SIGINT, SIG_DFL);
}