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_generate_random_machine_password(PyObject *self, PyObject *args)
  64 {
  65         int min, max;
  66         PyObject *ret;
  67         char *retstr;
  68         if (!PyArg_ParseTuple(args, "ii", &min, &max))
  69                 return NULL;
  70
  71         retstr = generate_random_machine_password(NULL, min, max);
  72         if (retstr == NULL) {
  73                 return NULL;
  74         }
  75         ret = PyUnicode_FromString(retstr);
  76         talloc_free(retstr);
  77         return ret;
  78 }
  79
  80 static PyObject *py_unix2nttime(PyObject *self, PyObject *args)
  81 {
  82         time_t t;
  83         unsigned int _t;
  84         NTTIME nt;
  85
  86         if (!PyArg_ParseTuple(args, "I", &_t)) {
  87                 return NULL;
  88         }
  89         t = _t;
  90
  91         unix_to_nt_time(&nt, t);
  92
  93         return PyLong_FromLongLong((uint64_t)nt);
  94 }
  95
  96 static PyObject *py_nttime2unix(PyObject *self, PyObject *args)
  97 {
  98         time_t t;
  99         NTTIME nt;
 100         if (!PyArg_ParseTuple(args, "K", &nt))
 101                 return NULL;
 102
 103         t = nt_time_to_unix(nt);
 104
 105         return PyInt_FromLong((uint64_t)t);
 106 }
 107
 108 static PyObject *py_nttime2string(PyObject *self, PyObject *args)
 109 {
 110         PyObject *ret;
 111         NTTIME nt;
 112         TALLOC_CTX *tmp_ctx;
 113         const char *string;
 114         if (!PyArg_ParseTuple(args, "K", &nt))
 115                 return NULL;
 116
 117         tmp_ctx = talloc_new(NULL);
 118         if (tmp_ctx == NULL) {
 119                 PyErr_NoMemory();
 120                 return NULL;
 121         }
 122
 123         string = nt_time_string(tmp_ctx, nt);
 124         ret =  PyString_FromString(string);
 125
 126         talloc_free(tmp_ctx);
 127
 128         return ret;
 129 }
 130
 131 static PyObject *py_set_debug_level(PyObject *self, PyObject *args)
 132 {
 133         unsigned level;
 134         if (!PyArg_ParseTuple(args, "I", &level))
 135                 return NULL;
 136         (DEBUGLEVEL) = level;
 137         Py_RETURN_NONE;
 138 }
 139
 140 static PyObject *py_get_debug_level(PyObject *self)
 141 {
 142         return PyInt_FromLong(DEBUGLEVEL);
 143 }
 144
 145 static PyObject *py_is_ntvfs_fileserver_built(PyObject *self)
 146 {
 147 #ifdef WITH_NTVFS_FILESERVER
 148         Py_RETURN_TRUE;
 149 #else
 150         Py_RETURN_FALSE;
 151 #endif
 152 }
 153
 154 /*
 155   return the list of interface IPs we have configured
 156   takes an loadparm context, returns a list of IPs in string form
 157
 158   Does not return addresses on 127.0.0.0/8
 159  */
 160 static PyObject *py_interface_ips(PyObject *self, PyObject *args)
 161 {
 162         PyObject *pylist;
 163         int count;
 164         TALLOC_CTX *tmp_ctx;
 165         PyObject *py_lp_ctx;
 166         struct loadparm_context *lp_ctx;
 167         struct interface *ifaces;
 168         int i, ifcount;
 169         int all_interfaces = 1;
 170
 171         if (!PyArg_ParseTuple(args, "O|i", &py_lp_ctx, &all_interfaces))
 172                 return NULL;
 173
 174         tmp_ctx = talloc_new(NULL);
 175         if (tmp_ctx == NULL) {
 176                 PyErr_NoMemory();
 177                 return NULL;
 178         }
 179
 180         lp_ctx = lpcfg_from_py_object(tmp_ctx, py_lp_ctx);
 181         if (lp_ctx == NULL) {
 182                 talloc_free(tmp_ctx);
 183                 return NULL;
 184         }
 185
 186         load_interface_list(tmp_ctx, lp_ctx, &ifaces);
 187
 188         count = iface_list_count(ifaces);
 189
 190         /* first count how many are not loopback addresses */
 191         for (ifcount = i = 0; i<count; i++) {
 192                 const char *ip = iface_list_n_ip(ifaces, i);
 193
 194                 if (all_interfaces) {
 195                         ifcount++;
 196                         continue;
 197                 }
 198
 199                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 200                         continue;
 201                 }
 202
 203                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 204                         continue;
 205                 }
 206
 207                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 208                         continue;
 209                 }
 210
 211                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 212                         continue;
 213                 }
 214
 215                 ifcount++;
 216         }
 217
 218         pylist = PyList_New(ifcount);
 219         for (ifcount = i = 0; i<count; i++) {
 220                 const char *ip = iface_list_n_ip(ifaces, i);
 221
 222                 if (all_interfaces) {
 223                         PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
 224                         ifcount++;
 225                         continue;
 226                 }
 227
 228                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 229                         continue;
 230                 }
 231
 232                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 233                         continue;
 234                 }
 235
 236                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 237                         continue;
 238                 }
 239
 240                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 241                         continue;
 242                 }
 243
 244                 PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
 245                 ifcount++;
 246         }
 247         talloc_free(tmp_ctx);
 248         return pylist;
 249 }
 250
 251 static PyObject *py_strcasecmp_m(PyObject *self, PyObject *args)
 252 {
 253         char *s1, *s2;
 254
 255         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 256                 return NULL;
 257
 258         return PyInt_FromLong(strcasecmp_m(s1, s2));
 259 }
 260
 261 static PyObject *py_strstr_m(PyObject *self, PyObject *args)
 262 {
 263         char *s1, *s2, *ret;
 264
 265         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 266                 return NULL;
 267
 268         ret = strstr_m(s1, s2);
 269         if (!ret) {
 270                 Py_RETURN_NONE;
 271         }
 272         return PyString_FromString(ret);
 273 }
 274
 275 static PyMethodDef py_misc_methods[] = {
 276         { "generate_random_str", (PyCFunction)py_generate_random_str, METH_VARARGS,
 277                 "generate_random_str(len) -> string\n"
 278                 "Generate random string with specified length." },
 279         { "generate_random_password", (PyCFunction)py_generate_random_password,
 280                 METH_VARARGS, "generate_random_password(min, max) -> string\n"
 281                 "Generate random password (based on printable ascii characters) "
 282                 "with a length >= min and <= max." },
 283         { "generate_random_machine_password", (PyCFunction)py_generate_random_machine_password,
 284                 METH_VARARGS, "generate_random_machine_password(min, max) -> string\n"
 285                 "Generate random password "
 286                 "(based on random utf16 characters converted to utf8 or "
 287                 "random ascii characters if 'unix charset' is not 'utf8')"
 288                 "with a length >= min (at least 14) and <= max (at most 255)." },
 289         { "unix2nttime", (PyCFunction)py_unix2nttime, METH_VARARGS,
 290                 "unix2nttime(timestamp) -> nttime" },
 291         { "nttime2unix", (PyCFunction)py_nttime2unix, METH_VARARGS,
 292                 "nttime2unix(nttime) -> timestamp" },
 293         { "nttime2string", (PyCFunction)py_nttime2string, METH_VARARGS,
 294                 "nttime2string(nttime) -> string" },
 295         { "set_debug_level", (PyCFunction)py_set_debug_level, METH_VARARGS,
 296                 "set debug level" },
 297         { "get_debug_level", (PyCFunction)py_get_debug_level, METH_NOARGS,
 298                 "get debug level" },
 299         { "interface_ips", (PyCFunction)py_interface_ips, METH_VARARGS,
 300                 "interface_ips(lp_ctx[, all_interfaces) -> list_of_ifaces\n"
 301                 "\n"
 302                 "get interface IP address list"},
 303         { "strcasecmp_m", (PyCFunction)py_strcasecmp_m, METH_VARARGS,
 304                 "(for testing) compare two strings using Samba's strcasecmp_m()"},
 305         { "strstr_m", (PyCFunction)py_strstr_m, METH_VARARGS,
 306                 "(for testing) find one string in another with Samba's strstr_m()"},
 307         { "is_ntvfs_fileserver_built", (PyCFunction)py_is_ntvfs_fileserver_built, METH_NOARGS,
 308                 "is the NTVFS file server built in this installation?" },
 309         { NULL }
 310 };
 311
 312 void init_glue(void)
 313 {
 314         PyObject *m;
 315
 316         debug_setup_talloc_log();
 317
 318         m = Py_InitModule3("_glue", py_misc_methods,
 319                            "Python bindings for miscellaneous Samba functions.");
 320         if (m == NULL)
 321                 return;
 322
 323         PyModule_AddObject(m, "version",
 324                                            PyString_FromString(SAMBA_VERSION_STRING));
 325         PyExc_NTSTATUSError = PyErr_NewException(discard_const_p(char, "samba.NTSTATUSError"), PyExc_RuntimeError, NULL);
 326         if (PyExc_NTSTATUSError != NULL) {
 327                 Py_INCREF(PyExc_NTSTATUSError);
 328                 PyModule_AddObject(m, "NTSTATUSError", PyExc_NTSTATUSError);
 329         }
 330
 331         PyExc_WERRORError = PyErr_NewException(discard_const_p(char, "samba.WERRORError"), PyExc_RuntimeError, NULL);
 332         if (PyExc_WERRORError != NULL) {
 333                 Py_INCREF(PyExc_WERRORError);
 334                 PyModule_AddObject(m, "WERRORError", PyExc_WERRORError);
 335         }
 336
 337         PyExc_HRESULTError = PyErr_NewException(discard_const_p(char, "samba.HRESULTError"), PyExc_RuntimeError, NULL);
 338         if (PyExc_HRESULTError != NULL) {
 339                 Py_INCREF(PyExc_HRESULTError);
 340                 PyModule_AddObject(m, "HRESULTError", PyExc_HRESULTError);
 341         }
 342
 343         PyExc_DsExtendedError = PyErr_NewException(discard_const_p(char, "samba.DsExtendedError"), PyExc_RuntimeError, NULL);
 344         if (PyExc_DsExtendedError != NULL) {
 345                 Py_INCREF(PyExc_DsExtendedError);
 346                 PyModule_AddObject(m, "DsExtendedError", PyExc_DsExtendedError);
 347         }
 348
 349 }
 350