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_unix2nttime(PyObject *self, PyObject *args)
  82 {
  83         time_t t;
  84         unsigned int _t;
  85         NTTIME nt;
  86
  87         if (!PyArg_ParseTuple(args, "I", &_t)) {
  88                 return NULL;
  89         }
  90         t = _t;
  91
  92         unix_to_nt_time(&nt, t);
  93
  94         return PyLong_FromLongLong((uint64_t)nt);
  95 }
  96
  97 static PyObject *py_nttime2unix(PyObject *self, PyObject *args)
  98 {
  99         time_t t;
 100         NTTIME nt;
 101         if (!PyArg_ParseTuple(args, "K", &nt))
 102                 return NULL;
 103
 104         t = nt_time_to_unix(nt);
 105
 106         return PyInt_FromLong((uint64_t)t);
 107 }
 108
 109 static PyObject *py_nttime2string(PyObject *self, PyObject *args)
 110 {
 111         PyObject *ret;
 112         NTTIME nt;
 113         TALLOC_CTX *tmp_ctx;
 114         const char *string;
 115         if (!PyArg_ParseTuple(args, "K", &nt))
 116                 return NULL;
 117
 118         tmp_ctx = talloc_new(NULL);
 119         if (tmp_ctx == NULL) {
 120                 PyErr_NoMemory();
 121                 return NULL;
 122         }
 123
 124         string = nt_time_string(tmp_ctx, nt);
 125         ret =  PyStr_FromString(string);
 126
 127         talloc_free(tmp_ctx);
 128
 129         return ret;
 130 }
 131
 132 static PyObject *py_set_debug_level(PyObject *self, PyObject *args)
 133 {
 134         unsigned level;
 135         if (!PyArg_ParseTuple(args, "I", &level))
 136                 return NULL;
 137         (DEBUGLEVEL) = level;
 138         Py_RETURN_NONE;
 139 }
 140
 141 static PyObject *py_get_debug_level(PyObject *self)
 142 {
 143         return PyInt_FromLong(DEBUGLEVEL);
 144 }
 145
 146 static PyObject *py_is_ntvfs_fileserver_built(PyObject *self)
 147 {
 148 #ifdef WITH_NTVFS_FILESERVER
 149         Py_RETURN_TRUE;
 150 #else
 151         Py_RETURN_FALSE;
 152 #endif
 153 }
 154
 155 static PyObject *py_is_heimdal_built(PyObject *self)
 156 {
 157 #ifdef SAMBA4_USES_HEIMDAL
 158         Py_RETURN_TRUE;
 159 #else
 160         Py_RETURN_FALSE;
 161 #endif
 162 }
 163
 164 /*
 165   return the list of interface IPs we have configured
 166   takes an loadparm context, returns a list of IPs in string form
 167
 168   Does not return addresses on 127.0.0.0/8
 169  */
 170 static PyObject *py_interface_ips(PyObject *self, PyObject *args)
 171 {
 172         PyObject *pylist;
 173         int count;
 174         TALLOC_CTX *tmp_ctx;
 175         PyObject *py_lp_ctx;
 176         struct loadparm_context *lp_ctx;
 177         struct interface *ifaces;
 178         int i, ifcount;
 179         int all_interfaces = 1;
 180
 181         if (!PyArg_ParseTuple(args, "O|i", &py_lp_ctx, &all_interfaces))
 182                 return NULL;
 183
 184         tmp_ctx = talloc_new(NULL);
 185         if (tmp_ctx == NULL) {
 186                 PyErr_NoMemory();
 187                 return NULL;
 188         }
 189
 190         lp_ctx = lpcfg_from_py_object(tmp_ctx, py_lp_ctx);
 191         if (lp_ctx == NULL) {
 192                 talloc_free(tmp_ctx);
 193                 return NULL;
 194         }
 195
 196         load_interface_list(tmp_ctx, lp_ctx, &ifaces);
 197
 198         count = iface_list_count(ifaces);
 199
 200         /* first count how many are not loopback addresses */
 201         for (ifcount = i = 0; i<count; i++) {
 202                 const char *ip = iface_list_n_ip(ifaces, i);
 203
 204                 if (all_interfaces) {
 205                         ifcount++;
 206                         continue;
 207                 }
 208
 209                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 210                         continue;
 211                 }
 212
 213                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 214                         continue;
 215                 }
 216
 217                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 218                         continue;
 219                 }
 220
 221                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 222                         continue;
 223                 }
 224
 225                 ifcount++;
 226         }
 227
 228         pylist = PyList_New(ifcount);
 229         for (ifcount = i = 0; i<count; i++) {
 230                 const char *ip = iface_list_n_ip(ifaces, i);
 231
 232                 if (all_interfaces) {
 233                         PyList_SetItem(pylist, ifcount, PyStr_FromString(ip));
 234                         ifcount++;
 235                         continue;
 236                 }
 237
 238                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 239                         continue;
 240                 }
 241
 242                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 243                         continue;
 244                 }
 245
 246                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 247                         continue;
 248                 }
 249
 250                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 251                         continue;
 252                 }
 253
 254                 PyList_SetItem(pylist, ifcount, PyStr_FromString(ip));
 255                 ifcount++;
 256         }
 257         talloc_free(tmp_ctx);
 258         return pylist;
 259 }
 260
 261 static PyObject *py_strcasecmp_m(PyObject *self, PyObject *args)
 262 {
 263         char *s1, *s2;
 264
 265         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 266                 return NULL;
 267
 268         return PyInt_FromLong(strcasecmp_m(s1, s2));
 269 }
 270
 271 static PyObject *py_strstr_m(PyObject *self, PyObject *args)
 272 {
 273         char *s1, *s2, *ret;
 274
 275         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 276                 return NULL;
 277
 278         ret = strstr_m(s1, s2);
 279         if (!ret) {
 280                 Py_RETURN_NONE;
 281         }
 282         return PyStr_FromString(ret);
 283 }
 284
 285 static PyMethodDef py_misc_methods[] = {
 286         { "generate_random_str", (PyCFunction)py_generate_random_str, METH_VARARGS,
 287                 "generate_random_str(len) -> string\n"
 288                 "Generate random string with specified length." },
 289         { "generate_random_password", (PyCFunction)py_generate_random_password,
 290                 METH_VARARGS, "generate_random_password(min, max) -> string\n"
 291                 "Generate random password (based on printable ascii characters) "
 292                 "with a length >= min and <= max." },
 293         { "generate_random_machine_password", (PyCFunction)py_generate_random_machine_password,
 294                 METH_VARARGS, "generate_random_machine_password(min, max) -> string\n"
 295                 "Generate random password "
 296                 "(based on random utf16 characters converted to utf8 or "
 297                 "random ascii characters if 'unix charset' is not 'utf8')"
 298                 "with a length >= min (at least 14) and <= max (at most 255)." },
 299         { "unix2nttime", (PyCFunction)py_unix2nttime, METH_VARARGS,
 300                 "unix2nttime(timestamp) -> nttime" },
 301         { "nttime2unix", (PyCFunction)py_nttime2unix, METH_VARARGS,
 302                 "nttime2unix(nttime) -> timestamp" },
 303         { "nttime2string", (PyCFunction)py_nttime2string, METH_VARARGS,
 304                 "nttime2string(nttime) -> string" },
 305         { "set_debug_level", (PyCFunction)py_set_debug_level, METH_VARARGS,
 306                 "set debug level" },
 307         { "get_debug_level", (PyCFunction)py_get_debug_level, METH_NOARGS,
 308                 "get debug level" },
 309         { "interface_ips", (PyCFunction)py_interface_ips, METH_VARARGS,
 310                 "interface_ips(lp_ctx[, all_interfaces) -> list_of_ifaces\n"
 311                 "\n"
 312                 "get interface IP address list"},
 313         { "strcasecmp_m", (PyCFunction)py_strcasecmp_m, METH_VARARGS,
 314                 "(for testing) compare two strings using Samba's strcasecmp_m()"},
 315         { "strstr_m", (PyCFunction)py_strstr_m, METH_VARARGS,
 316                 "(for testing) find one string in another with Samba's strstr_m()"},
 317         { "is_ntvfs_fileserver_built", (PyCFunction)py_is_ntvfs_fileserver_built, METH_NOARGS,
 318                 "is the NTVFS file server built in this installation?" },
 319         { "is_heimdal_built", (PyCFunction)py_is_heimdal_built, METH_NOARGS,
 320                 "is Samba built with Heimdal Kerberbos?" },
 321         { NULL }
 322 };
 323
 324 static struct PyModuleDef moduledef = {
 325     PyModuleDef_HEAD_INIT,
 326     .m_name = "_glue",
 327     .m_doc = "Python bindings for miscellaneous Samba functions.",
 328     .m_size = -1,
 329     .m_methods = py_misc_methods,
 330 };
 331
 332 MODULE_INIT_FUNC(_glue)
 333 {
 334         PyObject *m;
 335
 336         debug_setup_talloc_log();
 337
 338         m = PyModule_Create(&moduledef);
 339         if (m == NULL)
 340                 return NULL;
 341
 342         PyModule_AddObject(m, "version",
 343                                            PyStr_FromString(SAMBA_VERSION_STRING));
 344         PyExc_NTSTATUSError = PyErr_NewException(discard_const_p(char, "samba.NTSTATUSError"), PyExc_RuntimeError, NULL);
 345         if (PyExc_NTSTATUSError != NULL) {
 346                 Py_INCREF(PyExc_NTSTATUSError);
 347                 PyModule_AddObject(m, "NTSTATUSError", PyExc_NTSTATUSError);
 348         }
 349
 350         PyExc_WERRORError = PyErr_NewException(discard_const_p(char, "samba.WERRORError"), PyExc_RuntimeError, NULL);
 351         if (PyExc_WERRORError != NULL) {
 352                 Py_INCREF(PyExc_WERRORError);
 353                 PyModule_AddObject(m, "WERRORError", PyExc_WERRORError);
 354         }
 355
 356         PyExc_HRESULTError = PyErr_NewException(discard_const_p(char, "samba.HRESULTError"), PyExc_RuntimeError, NULL);
 357         if (PyExc_HRESULTError != NULL) {
 358                 Py_INCREF(PyExc_HRESULTError);
 359                 PyModule_AddObject(m, "HRESULTError", PyExc_HRESULTError);
 360         }
 361
 362         PyExc_DsExtendedError = PyErr_NewException(discard_const_p(char, "samba.DsExtendedError"), PyExc_RuntimeError, NULL);
 363         if (PyExc_DsExtendedError != NULL) {
 364                 Py_INCREF(PyExc_DsExtendedError);
 365                 PyModule_AddObject(m, "DsExtendedError", PyExc_DsExtendedError);
 366         }
 367
 368         return m;
 369 }
 370