python/pyglue.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
   4    Copyright (C) Matthias Dieter Wallnöfer          2009
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include <Python.h>
  21 #include "includes.h"
  22 #include "version.h"
  23 #include "param/pyparam.h"
  24 #include "lib/socket/netif.h"
  25
  26 void init_glue(void);
  27 static PyObject *PyExc_NTSTATUSError;
  28 static PyObject *PyExc_WERRORError;
  29 static PyObject *PyExc_HRESULTError;
  30 static PyObject *PyExc_DsExtendedError;
  31
  32 static PyObject *py_generate_random_str(PyObject *self, PyObject *args)
  33 {
  34         int len;
  35         PyObject *ret;
  36         char *retstr;
  37         if (!PyArg_ParseTuple(args, "i", &len))
  38                 return NULL;
  39
  40         retstr = generate_random_str(NULL, len);
  41         ret = PyString_FromString(retstr);
  42         talloc_free(retstr);
  43         return ret;
  44 }
  45
  46 static PyObject *py_generate_random_password(PyObject *self, PyObject *args)
  47 {
  48         int min, max;
  49         PyObject *ret;
  50         char *retstr;
  51         if (!PyArg_ParseTuple(args, "ii", &min, &max))
  52                 return NULL;
  53
  54         retstr = generate_random_password(NULL, min, max);
  55         if (retstr == NULL) {
  56                 return NULL;
  57         }
  58         ret = PyString_FromString(retstr);
  59         talloc_free(retstr);
  60         return ret;
  61 }
  62
  63 static PyObject *py_unix2nttime(PyObject *self, PyObject *args)
  64 {
  65         time_t t;
  66         unsigned int _t;
  67         NTTIME nt;
  68
  69         if (!PyArg_ParseTuple(args, "I", &_t)) {
  70                 return NULL;
  71         }
  72         t = _t;
  73
  74         unix_to_nt_time(&nt, t);
  75
  76         return PyLong_FromLongLong((uint64_t)nt);
  77 }
  78
  79 static PyObject *py_nttime2unix(PyObject *self, PyObject *args)
  80 {
  81         time_t t;
  82         NTTIME nt;
  83         if (!PyArg_ParseTuple(args, "K", &nt))
  84                 return NULL;
  85
  86         t = nt_time_to_unix(nt);
  87
  88         return PyInt_FromLong((uint64_t)t);
  89 }
  90
  91 static PyObject *py_nttime2string(PyObject *self, PyObject *args)
  92 {
  93         PyObject *ret;
  94         NTTIME nt;
  95         TALLOC_CTX *tmp_ctx;
  96         const char *string;
  97         if (!PyArg_ParseTuple(args, "K", &nt))
  98                 return NULL;
  99
 100         tmp_ctx = talloc_new(NULL);
 101         if (tmp_ctx == NULL) {
 102                 PyErr_NoMemory();
 103                 return NULL;
 104         }
 105
 106         string = nt_time_string(tmp_ctx, nt);
 107         ret =  PyString_FromString(string);
 108
 109         talloc_free(tmp_ctx);
 110
 111         return ret;
 112 }
 113
 114 static PyObject *py_set_debug_level(PyObject *self, PyObject *args)
 115 {
 116         unsigned level;
 117         if (!PyArg_ParseTuple(args, "I", &level))
 118                 return NULL;
 119         (DEBUGLEVEL) = level;
 120         Py_RETURN_NONE;
 121 }
 122
 123 static PyObject *py_get_debug_level(PyObject *self)
 124 {
 125         return PyInt_FromLong(DEBUGLEVEL);
 126 }
 127
 128 static PyObject *py_is_ntvfs_fileserver_built(PyObject *self)
 129 {
 130 #ifdef WITH_NTVFS_FILESERVER
 131         Py_RETURN_TRUE;
 132 #else
 133         Py_RETURN_FALSE;
 134 #endif
 135 }
 136
 137 /*
 138   return the list of interface IPs we have configured
 139   takes an loadparm context, returns a list of IPs in string form
 140
 141   Does not return addresses on 127.0.0.0/8
 142  */
 143 static PyObject *py_interface_ips(PyObject *self, PyObject *args)
 144 {
 145         PyObject *pylist;
 146         int count;
 147         TALLOC_CTX *tmp_ctx;
 148         PyObject *py_lp_ctx;
 149         struct loadparm_context *lp_ctx;
 150         struct interface *ifaces;
 151         int i, ifcount;
 152         int all_interfaces = 1;
 153
 154         if (!PyArg_ParseTuple(args, "O|i", &py_lp_ctx, &all_interfaces))
 155                 return NULL;
 156
 157         tmp_ctx = talloc_new(NULL);
 158         if (tmp_ctx == NULL) {
 159                 PyErr_NoMemory();
 160                 return NULL;
 161         }
 162
 163         lp_ctx = lpcfg_from_py_object(tmp_ctx, py_lp_ctx);
 164         if (lp_ctx == NULL) {
 165                 talloc_free(tmp_ctx);
 166                 return NULL;
 167         }
 168
 169         load_interface_list(tmp_ctx, lp_ctx, &ifaces);
 170
 171         count = iface_list_count(ifaces);
 172
 173         /* first count how many are not loopback addresses */
 174         for (ifcount = i = 0; i<count; i++) {
 175                 const char *ip = iface_list_n_ip(ifaces, i);
 176
 177                 if (all_interfaces) {
 178                         ifcount++;
 179                         continue;
 180                 }
 181
 182                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 183                         continue;
 184                 }
 185
 186                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 187                         continue;
 188                 }
 189
 190                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 191                         continue;
 192                 }
 193
 194                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 195                         continue;
 196                 }
 197
 198                 ifcount++;
 199         }
 200
 201         pylist = PyList_New(ifcount);
 202         for (ifcount = i = 0; i<count; i++) {
 203                 const char *ip = iface_list_n_ip(ifaces, i);
 204
 205                 if (all_interfaces) {
 206                         PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
 207                         ifcount++;
 208                         continue;
 209                 }
 210
 211                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 212                         continue;
 213                 }
 214
 215                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 216                         continue;
 217                 }
 218
 219                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 220                         continue;
 221                 }
 222
 223                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 224                         continue;
 225                 }
 226
 227                 PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
 228                 ifcount++;
 229         }
 230         talloc_free(tmp_ctx);
 231         return pylist;
 232 }
 233
 234 static PyObject *py_strcasecmp_m(PyObject *self, PyObject *args)
 235 {
 236         char *s1, *s2;
 237
 238         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 239                 return NULL;
 240
 241         return PyInt_FromLong(strcasecmp_m(s1, s2));
 242 }
 243
 244 static PyObject *py_strstr_m(PyObject *self, PyObject *args)
 245 {
 246         char *s1, *s2, *ret;
 247
 248         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 249                 return NULL;
 250
 251         ret = strstr_m(s1, s2);
 252         if (!ret) {
 253                 Py_RETURN_NONE;
 254         }
 255         return PyString_FromString(ret);
 256 }
 257
 258 static PyMethodDef py_misc_methods[] = {
 259         { "generate_random_str", (PyCFunction)py_generate_random_str, METH_VARARGS,
 260                 "generate_random_str(len) -> string\n"
 261                 "Generate random string with specified length." },
 262         { "generate_random_password", (PyCFunction)py_generate_random_password,
 263                 METH_VARARGS, "generate_random_password(min, max) -> string\n"
 264                 "Generate random password with a length >= min and <= max." },
 265         { "unix2nttime", (PyCFunction)py_unix2nttime, METH_VARARGS,
 266                 "unix2nttime(timestamp) -> nttime" },
 267         { "nttime2unix", (PyCFunction)py_nttime2unix, METH_VARARGS,
 268                 "nttime2unix(nttime) -> timestamp" },
 269         { "nttime2string", (PyCFunction)py_nttime2string, METH_VARARGS,
 270                 "nttime2string(nttime) -> string" },
 271         { "set_debug_level", (PyCFunction)py_set_debug_level, METH_VARARGS,
 272                 "set debug level" },
 273         { "get_debug_level", (PyCFunction)py_get_debug_level, METH_NOARGS,
 274                 "get debug level" },
 275         { "interface_ips", (PyCFunction)py_interface_ips, METH_VARARGS,
 276                 "interface_ips(lp_ctx[, all_interfaces) -> list_of_ifaces\n"
 277                 "\n"
 278                 "get interface IP address list"},
 279         { "strcasecmp_m", (PyCFunction)py_strcasecmp_m, METH_VARARGS,
 280                 "(for testing) compare two strings using Samba's strcasecmp_m()"},
 281         { "strstr_m", (PyCFunction)py_strstr_m, METH_VARARGS,
 282                 "(for testing) find one string in another with Samba's strstr_m()"},
 283         { "is_ntvfs_fileserver_built", (PyCFunction)py_is_ntvfs_fileserver_built, METH_NOARGS,
 284                 "is the NTVFS file server built in this installation?" },
 285         { NULL }
 286 };
 287
 288 void init_glue(void)
 289 {
 290         PyObject *m;
 291
 292         debug_setup_talloc_log();
 293
 294         m = Py_InitModule3("_glue", py_misc_methods,
 295                            "Python bindings for miscellaneous Samba functions.");
 296         if (m == NULL)
 297                 return;
 298
 299         PyModule_AddObject(m, "version",
 300                                            PyString_FromString(SAMBA_VERSION_STRING));
 301         PyExc_NTSTATUSError = PyErr_NewException(discard_const_p(char, "samba.NTSTATUSError"), PyExc_RuntimeError, NULL);
 302         if (PyExc_NTSTATUSError != NULL) {
 303                 Py_INCREF(PyExc_NTSTATUSError);
 304                 PyModule_AddObject(m, "NTSTATUSError", PyExc_NTSTATUSError);
 305         }
 306
 307         PyExc_WERRORError = PyErr_NewException(discard_const_p(char, "samba.WERRORError"), PyExc_RuntimeError, NULL);
 308         if (PyExc_WERRORError != NULL) {
 309                 Py_INCREF(PyExc_WERRORError);
 310                 PyModule_AddObject(m, "WERRORError", PyExc_WERRORError);
 311         }
 312
 313         PyExc_HRESULTError = PyErr_NewException(discard_const_p(char, "samba.HRESULTError"), PyExc_RuntimeError, NULL);
 314         if (PyExc_HRESULTError != NULL) {
 315                 Py_INCREF(PyExc_HRESULTError);
 316                 PyModule_AddObject(m, "HRESULTError", PyExc_HRESULTError);
 317         }
 318
 319         PyExc_DsExtendedError = PyErr_NewException(discard_const_p(char, "samba.DsExtendedError"), PyExc_RuntimeError, NULL);
 320         if (PyExc_DsExtendedError != NULL) {
 321                 Py_INCREF(PyExc_DsExtendedError);
 322                 PyModule_AddObject(m, "DsExtendedError", PyExc_DsExtendedError);
 323         }
 324
 325 }
 326