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 /*
 156   return the list of interface IPs we have configured
 157   takes an loadparm context, returns a list of IPs in string form
 158
 159   Does not return addresses on 127.0.0.0/8
 160  */
 161 static PyObject *py_interface_ips(PyObject *self, PyObject *args)
 162 {
 163         PyObject *pylist;
 164         int count;
 165         TALLOC_CTX *tmp_ctx;
 166         PyObject *py_lp_ctx;
 167         struct loadparm_context *lp_ctx;
 168         struct interface *ifaces;
 169         int i, ifcount;
 170         int all_interfaces = 1;
 171
 172         if (!PyArg_ParseTuple(args, "O|i", &py_lp_ctx, &all_interfaces))
 173                 return NULL;
 174
 175         tmp_ctx = talloc_new(NULL);
 176         if (tmp_ctx == NULL) {
 177                 PyErr_NoMemory();
 178                 return NULL;
 179         }
 180
 181         lp_ctx = lpcfg_from_py_object(tmp_ctx, py_lp_ctx);
 182         if (lp_ctx == NULL) {
 183                 talloc_free(tmp_ctx);
 184                 return NULL;
 185         }
 186
 187         load_interface_list(tmp_ctx, lp_ctx, &ifaces);
 188
 189         count = iface_list_count(ifaces);
 190
 191         /* first count how many are not loopback addresses */
 192         for (ifcount = i = 0; i<count; i++) {
 193                 const char *ip = iface_list_n_ip(ifaces, i);
 194
 195                 if (all_interfaces) {
 196                         ifcount++;
 197                         continue;
 198                 }
 199
 200                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 201                         continue;
 202                 }
 203
 204                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 205                         continue;
 206                 }
 207
 208                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 209                         continue;
 210                 }
 211
 212                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 213                         continue;
 214                 }
 215
 216                 ifcount++;
 217         }
 218
 219         pylist = PyList_New(ifcount);
 220         for (ifcount = i = 0; i<count; i++) {
 221                 const char *ip = iface_list_n_ip(ifaces, i);
 222
 223                 if (all_interfaces) {
 224                         PyList_SetItem(pylist, ifcount, PyStr_FromString(ip));
 225                         ifcount++;
 226                         continue;
 227                 }
 228
 229                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 230                         continue;
 231                 }
 232
 233                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 234                         continue;
 235                 }
 236
 237                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 238                         continue;
 239                 }
 240
 241                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 242                         continue;
 243                 }
 244
 245                 PyList_SetItem(pylist, ifcount, PyStr_FromString(ip));
 246                 ifcount++;
 247         }
 248         talloc_free(tmp_ctx);
 249         return pylist;
 250 }
 251
 252 static PyObject *py_strcasecmp_m(PyObject *self, PyObject *args)
 253 {
 254         char *s1, *s2;
 255
 256         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 257                 return NULL;
 258
 259         return PyInt_FromLong(strcasecmp_m(s1, s2));
 260 }
 261
 262 static PyObject *py_strstr_m(PyObject *self, PyObject *args)
 263 {
 264         char *s1, *s2, *ret;
 265
 266         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 267                 return NULL;
 268
 269         ret = strstr_m(s1, s2);
 270         if (!ret) {
 271                 Py_RETURN_NONE;
 272         }
 273         return PyStr_FromString(ret);
 274 }
 275
 276 static PyMethodDef py_misc_methods[] = {
 277         { "generate_random_str", (PyCFunction)py_generate_random_str, METH_VARARGS,
 278                 "generate_random_str(len) -> string\n"
 279                 "Generate random string with specified length." },
 280         { "generate_random_password", (PyCFunction)py_generate_random_password,
 281                 METH_VARARGS, "generate_random_password(min, max) -> string\n"
 282                 "Generate random password (based on printable ascii characters) "
 283                 "with a length >= min and <= max." },
 284         { "generate_random_machine_password", (PyCFunction)py_generate_random_machine_password,
 285                 METH_VARARGS, "generate_random_machine_password(min, max) -> string\n"
 286                 "Generate random password "
 287                 "(based on random utf16 characters converted to utf8 or "
 288                 "random ascii characters if 'unix charset' is not 'utf8')"
 289                 "with a length >= min (at least 14) and <= max (at most 255)." },
 290         { "unix2nttime", (PyCFunction)py_unix2nttime, METH_VARARGS,
 291                 "unix2nttime(timestamp) -> nttime" },
 292         { "nttime2unix", (PyCFunction)py_nttime2unix, METH_VARARGS,
 293                 "nttime2unix(nttime) -> timestamp" },
 294         { "nttime2string", (PyCFunction)py_nttime2string, METH_VARARGS,
 295                 "nttime2string(nttime) -> string" },
 296         { "set_debug_level", (PyCFunction)py_set_debug_level, METH_VARARGS,
 297                 "set debug level" },
 298         { "get_debug_level", (PyCFunction)py_get_debug_level, METH_NOARGS,
 299                 "get debug level" },
 300         { "interface_ips", (PyCFunction)py_interface_ips, METH_VARARGS,
 301                 "interface_ips(lp_ctx[, all_interfaces) -> list_of_ifaces\n"
 302                 "\n"
 303                 "get interface IP address list"},
 304         { "strcasecmp_m", (PyCFunction)py_strcasecmp_m, METH_VARARGS,
 305                 "(for testing) compare two strings using Samba's strcasecmp_m()"},
 306         { "strstr_m", (PyCFunction)py_strstr_m, METH_VARARGS,
 307                 "(for testing) find one string in another with Samba's strstr_m()"},
 308         { "is_ntvfs_fileserver_built", (PyCFunction)py_is_ntvfs_fileserver_built, METH_NOARGS,
 309                 "is the NTVFS file server built in this installation?" },
 310         { NULL }
 311 };
 312
 313 static struct PyModuleDef moduledef = {
 314     PyModuleDef_HEAD_INIT,
 315     .m_name = "_glue",
 316     .m_doc = "Python bindings for miscellaneous Samba functions.",
 317     .m_size = -1,
 318     .m_methods = py_misc_methods,
 319 };
 320
 321 MODULE_INIT_FUNC(_glue)
 322 {
 323         PyObject *m;
 324
 325         debug_setup_talloc_log();
 326
 327         m = PyModule_Create(&moduledef);
 328         if (m == NULL)
 329                 return NULL;
 330
 331         PyModule_AddObject(m, "version",
 332                                            PyStr_FromString(SAMBA_VERSION_STRING));
 333         PyExc_NTSTATUSError = PyErr_NewException(discard_const_p(char, "samba.NTSTATUSError"), PyExc_RuntimeError, NULL);
 334         if (PyExc_NTSTATUSError != NULL) {
 335                 Py_INCREF(PyExc_NTSTATUSError);
 336                 PyModule_AddObject(m, "NTSTATUSError", PyExc_NTSTATUSError);
 337         }
 338
 339         PyExc_WERRORError = PyErr_NewException(discard_const_p(char, "samba.WERRORError"), PyExc_RuntimeError, NULL);
 340         if (PyExc_WERRORError != NULL) {
 341                 Py_INCREF(PyExc_WERRORError);
 342                 PyModule_AddObject(m, "WERRORError", PyExc_WERRORError);
 343         }
 344
 345         PyExc_HRESULTError = PyErr_NewException(discard_const_p(char, "samba.HRESULTError"), PyExc_RuntimeError, NULL);
 346         if (PyExc_HRESULTError != NULL) {
 347                 Py_INCREF(PyExc_HRESULTError);
 348                 PyModule_AddObject(m, "HRESULTError", PyExc_HRESULTError);
 349         }
 350
 351         PyExc_DsExtendedError = PyErr_NewException(discard_const_p(char, "samba.DsExtendedError"), PyExc_RuntimeError, NULL);
 352         if (PyExc_DsExtendedError != NULL) {
 353                 Py_INCREF(PyExc_DsExtendedError);
 354                 PyModule_AddObject(m, "DsExtendedError", PyExc_DsExtendedError);
 355         }
 356
 357         return m;
 358 }
 359