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 "python/py3compat.h"
  22 #include "includes.h"
  23 #include "version.h"
  24 #include "param/pyparam.h"
  25 #include "lib/socket/netif.h"
  26
  27 void init_glue(void);
  28 static PyObject *PyExc_NTSTATUSError;
  29 static PyObject *PyExc_WERRORError;
  30 static PyObject *PyExc_HRESULTError;
  31 static PyObject *PyExc_DsExtendedError;
  32
  33 static PyObject *py_generate_random_str(PyObject *self, PyObject *args)
  34 {
  35         int len;
  36         PyObject *ret;
  37         char *retstr;
  38         if (!PyArg_ParseTuple(args, "i", &len))
  39                 return NULL;
  40
  41         retstr = generate_random_str(NULL, len);
  42         ret = PyStr_FromString(retstr);
  43         talloc_free(retstr);
  44         return ret;
  45 }
  46
  47 static PyObject *py_generate_random_password(PyObject *self, PyObject *args)
  48 {
  49         int min, max;
  50         PyObject *ret;
  51         char *retstr;
  52         if (!PyArg_ParseTuple(args, "ii", &min, &max))
  53                 return NULL;
  54
  55         retstr = generate_random_password(NULL, min, max);
  56         if (retstr == NULL) {
  57                 return NULL;
  58         }
  59         ret = PyStr_FromString(retstr);
  60         talloc_free(retstr);
  61         return ret;
  62 }
  63
  64 static PyObject *py_generate_random_machine_password(PyObject *self, PyObject *args)
  65 {
  66         int min, max;
  67         PyObject *ret;
  68         char *retstr;
  69         if (!PyArg_ParseTuple(args, "ii", &min, &max))
  70                 return NULL;
  71
  72         retstr = generate_random_machine_password(NULL, min, max);
  73         if (retstr == NULL) {
  74                 return NULL;
  75         }
  76         ret = PyUnicode_FromString(retstr);
  77         talloc_free(retstr);
  78         return ret;
  79 }
  80
  81 static PyObject *py_check_password_quality(PyObject *self, PyObject *args)
  82 {
  83         char *pass;
  84
  85         if (!PyArg_ParseTuple(args, "s", &pass)) {
  86                 return NULL;
  87         }
  88
  89         return PyBool_FromLong(check_password_quality(pass));
  90 }
  91
  92 static PyObject *py_unix2nttime(PyObject *self, PyObject *args)
  93 {
  94         time_t t;
  95         unsigned int _t;
  96         NTTIME nt;
  97
  98         if (!PyArg_ParseTuple(args, "I", &_t)) {
  99                 return NULL;
 100         }
 101         t = _t;
 102
 103         unix_to_nt_time(&nt, t);
 104
 105         return PyLong_FromLongLong((uint64_t)nt);
 106 }
 107
 108 static PyObject *py_nttime2unix(PyObject *self, PyObject *args)
 109 {
 110         time_t t;
 111         NTTIME nt;
 112         if (!PyArg_ParseTuple(args, "K", &nt))
 113                 return NULL;
 114
 115         t = nt_time_to_unix(nt);
 116
 117         return PyInt_FromLong((uint64_t)t);
 118 }
 119
 120 static PyObject *py_nttime2string(PyObject *self, PyObject *args)
 121 {
 122         PyObject *ret;
 123         NTTIME nt;
 124         TALLOC_CTX *tmp_ctx;
 125         const char *string;
 126         if (!PyArg_ParseTuple(args, "K", &nt))
 127                 return NULL;
 128
 129         tmp_ctx = talloc_new(NULL);
 130         if (tmp_ctx == NULL) {
 131                 PyErr_NoMemory();
 132                 return NULL;
 133         }
 134
 135         string = nt_time_string(tmp_ctx, nt);
 136         ret =  PyStr_FromString(string);
 137
 138         talloc_free(tmp_ctx);
 139
 140         return ret;
 141 }
 142
 143 static PyObject *py_set_debug_level(PyObject *self, PyObject *args)
 144 {
 145         unsigned level;
 146         if (!PyArg_ParseTuple(args, "I", &level))
 147                 return NULL;
 148         (DEBUGLEVEL) = level;
 149         Py_RETURN_NONE;
 150 }
 151
 152 static PyObject *py_get_debug_level(PyObject *self)
 153 {
 154         return PyInt_FromLong(DEBUGLEVEL);
 155 }
 156
 157 static PyObject *py_is_ntvfs_fileserver_built(PyObject *self)
 158 {
 159 #ifdef WITH_NTVFS_FILESERVER
 160         Py_RETURN_TRUE;
 161 #else
 162         Py_RETURN_FALSE;
 163 #endif
 164 }
 165
 166 static PyObject *py_is_heimdal_built(PyObject *self)
 167 {
 168 #ifdef SAMBA4_USES_HEIMDAL
 169         Py_RETURN_TRUE;
 170 #else
 171         Py_RETURN_FALSE;
 172 #endif
 173 }
 174
 175 /*
 176   return the list of interface IPs we have configured
 177   takes an loadparm context, returns a list of IPs in string form
 178
 179   Does not return addresses on 127.0.0.0/8
 180  */
 181 static PyObject *py_interface_ips(PyObject *self, PyObject *args)
 182 {
 183         PyObject *pylist;
 184         int count;
 185         TALLOC_CTX *tmp_ctx;
 186         PyObject *py_lp_ctx;
 187         struct loadparm_context *lp_ctx;
 188         struct interface *ifaces;
 189         int i, ifcount;
 190         int all_interfaces = 1;
 191
 192         if (!PyArg_ParseTuple(args, "O|i", &py_lp_ctx, &all_interfaces))
 193                 return NULL;
 194
 195         tmp_ctx = talloc_new(NULL);
 196         if (tmp_ctx == NULL) {
 197                 PyErr_NoMemory();
 198                 return NULL;
 199         }
 200
 201         lp_ctx = lpcfg_from_py_object(tmp_ctx, py_lp_ctx);
 202         if (lp_ctx == NULL) {
 203                 talloc_free(tmp_ctx);
 204                 return NULL;
 205         }
 206
 207         load_interface_list(tmp_ctx, lp_ctx, &ifaces);
 208
 209         count = iface_list_count(ifaces);
 210
 211         /* first count how many are not loopback addresses */
 212         for (ifcount = i = 0; i<count; i++) {
 213                 const char *ip = iface_list_n_ip(ifaces, i);
 214
 215                 if (all_interfaces) {
 216                         ifcount++;
 217                         continue;
 218                 }
 219
 220                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 221                         continue;
 222                 }
 223
 224                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 225                         continue;
 226                 }
 227
 228                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 229                         continue;
 230                 }
 231
 232                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 233                         continue;
 234                 }
 235
 236                 ifcount++;
 237         }
 238
 239         pylist = PyList_New(ifcount);
 240         for (ifcount = i = 0; i<count; i++) {
 241                 const char *ip = iface_list_n_ip(ifaces, i);
 242
 243                 if (all_interfaces) {
 244                         PyList_SetItem(pylist, ifcount, PyStr_FromString(ip));
 245                         ifcount++;
 246                         continue;
 247                 }
 248
 249                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 250                         continue;
 251                 }
 252
 253                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 254                         continue;
 255                 }
 256
 257                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 258                         continue;
 259                 }
 260
 261                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 262                         continue;
 263                 }
 264
 265                 PyList_SetItem(pylist, ifcount, PyStr_FromString(ip));
 266                 ifcount++;
 267         }
 268         talloc_free(tmp_ctx);
 269         return pylist;
 270 }
 271
 272 static PyObject *py_strcasecmp_m(PyObject *self, PyObject *args)
 273 {
 274         char *s1, *s2;
 275
 276         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 277                 return NULL;
 278
 279         return PyInt_FromLong(strcasecmp_m(s1, s2));
 280 }
 281
 282 static PyObject *py_strstr_m(PyObject *self, PyObject *args)
 283 {
 284         char *s1, *s2, *ret;
 285
 286         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 287                 return NULL;
 288
 289         ret = strstr_m(s1, s2);
 290         if (!ret) {
 291                 Py_RETURN_NONE;
 292         }
 293         return PyStr_FromString(ret);
 294 }
 295
 296 static PyMethodDef py_misc_methods[] = {
 297         { "generate_random_str", (PyCFunction)py_generate_random_str, METH_VARARGS,
 298                 "generate_random_str(len) -> string\n"
 299                 "Generate random string with specified length." },
 300         { "generate_random_password", (PyCFunction)py_generate_random_password,
 301                 METH_VARARGS, "generate_random_password(min, max) -> string\n"
 302                 "Generate random password (based on printable ascii characters) "
 303                 "with a length >= min and <= max." },
 304         { "generate_random_machine_password", (PyCFunction)py_generate_random_machine_password,
 305                 METH_VARARGS, "generate_random_machine_password(min, max) -> string\n"
 306                 "Generate random password "
 307                 "(based on random utf16 characters converted to utf8 or "
 308                 "random ascii characters if 'unix charset' is not 'utf8')"
 309                 "with a length >= min (at least 14) and <= max (at most 255)." },
 310         { "check_password_quality", (PyCFunction)py_check_password_quality,
 311                 METH_VARARGS, "check_password_quality(pass) -> bool\n"
 312                 "Check password quality against Samba's check_password_quality,"
 313                 "the implementation of Microsoft's rules:"
 314                 "http://msdn.microsoft.com/en-us/subscriptions/cc786468%28v=ws.10%29.aspx"
 315         },
 316         { "unix2nttime", (PyCFunction)py_unix2nttime, METH_VARARGS,
 317                 "unix2nttime(timestamp) -> nttime" },
 318         { "nttime2unix", (PyCFunction)py_nttime2unix, METH_VARARGS,
 319                 "nttime2unix(nttime) -> timestamp" },
 320         { "nttime2string", (PyCFunction)py_nttime2string, METH_VARARGS,
 321                 "nttime2string(nttime) -> string" },
 322         { "set_debug_level", (PyCFunction)py_set_debug_level, METH_VARARGS,
 323                 "set debug level" },
 324         { "get_debug_level", (PyCFunction)py_get_debug_level, METH_NOARGS,
 325                 "get debug level" },
 326         { "interface_ips", (PyCFunction)py_interface_ips, METH_VARARGS,
 327                 "interface_ips(lp_ctx[, all_interfaces) -> list_of_ifaces\n"
 328                 "\n"
 329                 "get interface IP address list"},
 330         { "strcasecmp_m", (PyCFunction)py_strcasecmp_m, METH_VARARGS,
 331                 "(for testing) compare two strings using Samba's strcasecmp_m()"},
 332         { "strstr_m", (PyCFunction)py_strstr_m, METH_VARARGS,
 333                 "(for testing) find one string in another with Samba's strstr_m()"},
 334         { "is_ntvfs_fileserver_built", (PyCFunction)py_is_ntvfs_fileserver_built, METH_NOARGS,
 335                 "is the NTVFS file server built in this installation?" },
 336         { "is_heimdal_built", (PyCFunction)py_is_heimdal_built, METH_NOARGS,
 337                 "is Samba built with Heimdal Kerberbos?" },
 338         { NULL }
 339 };
 340
 341 static struct PyModuleDef moduledef = {
 342     PyModuleDef_HEAD_INIT,
 343     .m_name = "_glue",
 344     .m_doc = "Python bindings for miscellaneous Samba functions.",
 345     .m_size = -1,
 346     .m_methods = py_misc_methods,
 347 };
 348
 349 MODULE_INIT_FUNC(_glue)
 350 {
 351         PyObject *m;
 352
 353         debug_setup_talloc_log();
 354
 355         m = PyModule_Create(&moduledef);
 356         if (m == NULL)
 357                 return NULL;
 358
 359         PyModule_AddObject(m, "version",
 360                                            PyStr_FromString(SAMBA_VERSION_STRING));
 361         PyExc_NTSTATUSError = PyErr_NewException(discard_const_p(char, "samba.NTSTATUSError"), PyExc_RuntimeError, NULL);
 362         if (PyExc_NTSTATUSError != NULL) {
 363                 Py_INCREF(PyExc_NTSTATUSError);
 364                 PyModule_AddObject(m, "NTSTATUSError", PyExc_NTSTATUSError);
 365         }
 366
 367         PyExc_WERRORError = PyErr_NewException(discard_const_p(char, "samba.WERRORError"), PyExc_RuntimeError, NULL);
 368         if (PyExc_WERRORError != NULL) {
 369                 Py_INCREF(PyExc_WERRORError);
 370                 PyModule_AddObject(m, "WERRORError", PyExc_WERRORError);
 371         }
 372
 373         PyExc_HRESULTError = PyErr_NewException(discard_const_p(char, "samba.HRESULTError"), PyExc_RuntimeError, NULL);
 374         if (PyExc_HRESULTError != NULL) {
 375                 Py_INCREF(PyExc_HRESULTError);
 376                 PyModule_AddObject(m, "HRESULTError", PyExc_HRESULTError);
 377         }
 378
 379         PyExc_DsExtendedError = PyErr_NewException(discard_const_p(char, "samba.DsExtendedError"), PyExc_RuntimeError, NULL);
 380         if (PyExc_DsExtendedError != NULL) {
 381                 Py_INCREF(PyExc_DsExtendedError);
 382                 PyModule_AddObject(m, "DsExtendedError", PyExc_DsExtendedError);
 383         }
 384
 385         return m;
 386 }
 387