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
  28 static PyObject *py_generate_random_str(PyObject *self, PyObject *args)
  29 {
  30         int len;
  31         PyObject *ret;
  32         char *retstr;
  33         if (!PyArg_ParseTuple(args, "i", &len))
  34                 return NULL;
  35
  36         retstr = generate_random_str(NULL, len);
  37         ret = PyString_FromString(retstr);
  38         talloc_free(retstr);
  39         return ret;
  40 }
  41
  42 static PyObject *py_generate_random_password(PyObject *self, PyObject *args)
  43 {
  44         int min, max;
  45         PyObject *ret;
  46         char *retstr;
  47         if (!PyArg_ParseTuple(args, "ii", &min, &max))
  48                 return NULL;
  49
  50         retstr = generate_random_password(NULL, min, max);
  51         if (retstr == NULL) {
  52                 return NULL;
  53         }
  54         ret = PyString_FromString(retstr);
  55         talloc_free(retstr);
  56         return ret;
  57 }
  58
  59 static PyObject *py_unix2nttime(PyObject *self, PyObject *args)
  60 {
  61         time_t t;
  62         unsigned int _t;
  63         NTTIME nt;
  64
  65         if (!PyArg_ParseTuple(args, "I", &_t)) {
  66                 return NULL;
  67         }
  68         t = _t;
  69
  70         unix_to_nt_time(&nt, t);
  71
  72         return PyLong_FromLongLong((uint64_t)nt);
  73 }
  74
  75 static PyObject *py_nttime2unix(PyObject *self, PyObject *args)
  76 {
  77         time_t t;
  78         NTTIME nt;
  79         if (!PyArg_ParseTuple(args, "K", &nt))
  80                 return NULL;
  81
  82         t = nt_time_to_unix(nt);
  83
  84         return PyInt_FromLong((uint64_t)t);
  85 }
  86
  87 static PyObject *py_nttime2string(PyObject *self, PyObject *args)
  88 {
  89         PyObject *ret;
  90         NTTIME nt;
  91         TALLOC_CTX *tmp_ctx;
  92         const char *string;
  93         if (!PyArg_ParseTuple(args, "K", &nt))
  94                 return NULL;
  95
  96         tmp_ctx = talloc_new(NULL);
  97         if (tmp_ctx == NULL) {
  98                 PyErr_NoMemory();
  99                 return NULL;
 100         }
 101
 102         string = nt_time_string(tmp_ctx, nt);
 103         ret =  PyString_FromString(string);
 104
 105         talloc_free(tmp_ctx);
 106
 107         return ret;
 108 }
 109
 110 static PyObject *py_set_debug_level(PyObject *self, PyObject *args)
 111 {
 112         unsigned level;
 113         if (!PyArg_ParseTuple(args, "I", &level))
 114                 return NULL;
 115         (DEBUGLEVEL) = level;
 116         Py_RETURN_NONE;
 117 }
 118
 119 static PyObject *py_get_debug_level(PyObject *self)
 120 {
 121         return PyInt_FromLong(DEBUGLEVEL);
 122 }
 123
 124 static PyObject *py_is_ntvfs_fileserver_built(PyObject *self)
 125 {
 126 #ifdef WITH_NTVFS_FILESERVER
 127         Py_RETURN_TRUE;
 128 #else
 129         Py_RETURN_FALSE;
 130 #endif
 131 }
 132
 133 /*
 134   return the list of interface IPs we have configured
 135   takes an loadparm context, returns a list of IPs in string form
 136
 137   Does not return addresses on 127.0.0.0/8
 138  */
 139 static PyObject *py_interface_ips(PyObject *self, PyObject *args)
 140 {
 141         PyObject *pylist;
 142         int count;
 143         TALLOC_CTX *tmp_ctx;
 144         PyObject *py_lp_ctx;
 145         struct loadparm_context *lp_ctx;
 146         struct interface *ifaces;
 147         int i, ifcount;
 148         int all_interfaces = 1;
 149
 150         if (!PyArg_ParseTuple(args, "O|i", &py_lp_ctx, &all_interfaces))
 151                 return NULL;
 152
 153         tmp_ctx = talloc_new(NULL);
 154         if (tmp_ctx == NULL) {
 155                 PyErr_NoMemory();
 156                 return NULL;
 157         }
 158
 159         lp_ctx = lpcfg_from_py_object(tmp_ctx, py_lp_ctx);
 160         if (lp_ctx == NULL) {
 161                 talloc_free(tmp_ctx);
 162                 return NULL;
 163         }
 164
 165         load_interface_list(tmp_ctx, lp_ctx, &ifaces);
 166
 167         count = iface_list_count(ifaces);
 168
 169         /* first count how many are not loopback addresses */
 170         for (ifcount = i = 0; i<count; i++) {
 171                 const char *ip = iface_list_n_ip(ifaces, i);
 172
 173                 if (all_interfaces) {
 174                         ifcount++;
 175                         continue;
 176                 }
 177
 178                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 179                         continue;
 180                 }
 181
 182                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 183                         continue;
 184                 }
 185
 186                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 187                         continue;
 188                 }
 189
 190                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 191                         continue;
 192                 }
 193
 194                 ifcount++;
 195         }
 196
 197         pylist = PyList_New(ifcount);
 198         for (ifcount = i = 0; i<count; i++) {
 199                 const char *ip = iface_list_n_ip(ifaces, i);
 200
 201                 if (all_interfaces) {
 202                         PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
 203                         ifcount++;
 204                         continue;
 205                 }
 206
 207                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 208                         continue;
 209                 }
 210
 211                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 212                         continue;
 213                 }
 214
 215                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 216                         continue;
 217                 }
 218
 219                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 220                         continue;
 221                 }
 222
 223                 PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
 224                 ifcount++;
 225         }
 226         talloc_free(tmp_ctx);
 227         return pylist;
 228 }
 229
 230 static PyObject *py_strcasecmp_m(PyObject *self, PyObject *args)
 231 {
 232         char *s1, *s2;
 233
 234         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 235                 return NULL;
 236
 237         return PyInt_FromLong(strcasecmp_m(s1, s2));
 238 }
 239
 240 static PyObject *py_strstr_m(PyObject *self, PyObject *args)
 241 {
 242         char *s1, *s2, *ret;
 243
 244         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 245                 return NULL;
 246
 247         ret = strstr_m(s1, s2);
 248         if (!ret) {
 249                 Py_RETURN_NONE;
 250         }
 251         return PyString_FromString(ret);
 252 }
 253
 254 static PyMethodDef py_misc_methods[] = {
 255         { "generate_random_str", (PyCFunction)py_generate_random_str, METH_VARARGS,
 256                 "generate_random_str(len) -> string\n"
 257                 "Generate random string with specified length." },
 258         { "generate_random_password", (PyCFunction)py_generate_random_password,
 259                 METH_VARARGS, "generate_random_password(min, max) -> string\n"
 260                 "Generate random password with a length >= min and <= max." },
 261         { "unix2nttime", (PyCFunction)py_unix2nttime, METH_VARARGS,
 262                 "unix2nttime(timestamp) -> nttime" },
 263         { "nttime2unix", (PyCFunction)py_nttime2unix, METH_VARARGS,
 264                 "nttime2unix(nttime) -> timestamp" },
 265         { "nttime2string", (PyCFunction)py_nttime2string, METH_VARARGS,
 266                 "nttime2string(nttime) -> string" },
 267         { "set_debug_level", (PyCFunction)py_set_debug_level, METH_VARARGS,
 268                 "set debug level" },
 269         { "get_debug_level", (PyCFunction)py_get_debug_level, METH_NOARGS,
 270                 "get debug level" },
 271         { "interface_ips", (PyCFunction)py_interface_ips, METH_VARARGS,
 272                 "interface_ips(lp_ctx[, all_interfaces) -> list_of_ifaces\n"
 273                 "\n"
 274                 "get interface IP address list"},
 275         { "strcasecmp_m", (PyCFunction)py_strcasecmp_m, METH_VARARGS,
 276                 "(for testing) compare two strings using Samba's strcasecmp_m()"},
 277         { "strstr_m", (PyCFunction)py_strstr_m, METH_VARARGS,
 278                 "(for testing) find one string in another with Samba's strstr_m()"},
 279         { "is_ntvfs_fileserver_built", (PyCFunction)py_is_ntvfs_fileserver_built, METH_NOARGS,
 280                 "is the NTVFS file server built in this installation?" },
 281         { NULL }
 282 };
 283
 284 void init_glue(void)
 285 {
 286         PyObject *m;
 287
 288         debug_setup_talloc_log();
 289
 290         m = Py_InitModule3("_glue", py_misc_methods,
 291                            "Python bindings for miscellaneous Samba functions.");
 292         if (m == NULL)
 293                 return;
 294
 295         PyModule_AddObject(m, "version",
 296                                            PyString_FromString(SAMBA_VERSION_STRING));
 297 }
 298