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 #ifndef Py_RETURN_NONE
  29 #define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
  30 #endif
  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_unix2nttime(PyObject *self, PyObject *args)
  64 {
  65         time_t t;
  66         unsigned int _t;
  67         NTTIME nt;
  68
  69         if (!PyArg_ParseTuple(args, "I", &_t)) {
  70                 return NULL;
  71         }
  72         t = _t;
  73
  74         unix_to_nt_time(&nt, t);
  75
  76         return PyLong_FromLongLong((uint64_t)nt);
  77 }
  78
  79 static PyObject *py_nttime2unix(PyObject *self, PyObject *args)
  80 {
  81         time_t t;
  82         NTTIME nt;
  83         if (!PyArg_ParseTuple(args, "K", &nt))
  84                 return NULL;
  85
  86         t = nt_time_to_unix(nt);
  87
  88         return PyInt_FromLong((uint64_t)t);
  89 }
  90
  91 static PyObject *py_nttime2string(PyObject *self, PyObject *args)
  92 {
  93         PyObject *ret;
  94         NTTIME nt;
  95         TALLOC_CTX *tmp_ctx;
  96         const char *string;
  97         if (!PyArg_ParseTuple(args, "K", &nt))
  98                 return NULL;
  99
 100         tmp_ctx = talloc_new(NULL);
 101         if (tmp_ctx == NULL) {
 102                 PyErr_NoMemory();
 103                 return NULL;
 104         }
 105
 106         string = nt_time_string(tmp_ctx, nt);
 107         ret =  PyString_FromString(string);
 108
 109         talloc_free(tmp_ctx);
 110
 111         return ret;
 112 }
 113
 114 static PyObject *py_set_debug_level(PyObject *self, PyObject *args)
 115 {
 116         unsigned level;
 117         if (!PyArg_ParseTuple(args, "I", &level))
 118                 return NULL;
 119         (DEBUGLEVEL) = level;
 120         Py_RETURN_NONE;
 121 }
 122
 123 static PyObject *py_get_debug_level(PyObject *self)
 124 {
 125         return PyInt_FromLong(DEBUGLEVEL);
 126 }
 127
 128 /*
 129   return the list of interface IPs we have configured
 130   takes an loadparm context, returns a list of IPs in string form
 131
 132   Does not return addresses on 127.0.0.0/8
 133  */
 134 static PyObject *py_interface_ips(PyObject *self, PyObject *args)
 135 {
 136         PyObject *pylist;
 137         int count;
 138         TALLOC_CTX *tmp_ctx;
 139         PyObject *py_lp_ctx;
 140         struct loadparm_context *lp_ctx;
 141         struct interface *ifaces;
 142         int i, ifcount;
 143         int all_interfaces;
 144
 145         if (!PyArg_ParseTuple(args, "Oi", &py_lp_ctx, &all_interfaces))
 146                 return NULL;
 147
 148         tmp_ctx = talloc_new(NULL);
 149         if (tmp_ctx == NULL) {
 150                 PyErr_NoMemory();
 151                 return NULL;
 152         }
 153
 154         lp_ctx = lpcfg_from_py_object(tmp_ctx, py_lp_ctx);
 155         if (lp_ctx == NULL) {
 156                 talloc_free(tmp_ctx);
 157                 return NULL;
 158         }
 159
 160         load_interface_list(tmp_ctx, lp_ctx, &ifaces);
 161
 162         count = iface_list_count(ifaces);
 163
 164         /* first count how many are not loopback addresses */
 165         for (ifcount = i = 0; i<count; i++) {
 166                 const char *ip = iface_list_n_ip(ifaces, i);
 167
 168                 if (all_interfaces) {
 169                         ifcount++;
 170                         continue;
 171                 }
 172
 173                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 174                         continue;
 175                 }
 176
 177                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 178                         continue;
 179                 }
 180
 181                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 182                         continue;
 183                 }
 184
 185                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 186                         continue;
 187                 }
 188
 189                 ifcount++;
 190         }
 191
 192         pylist = PyList_New(ifcount);
 193         for (ifcount = i = 0; i<count; i++) {
 194                 const char *ip = iface_list_n_ip(ifaces, i);
 195
 196                 if (all_interfaces) {
 197                         PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
 198                         ifcount++;
 199                         continue;
 200                 }
 201
 202                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 203                         continue;
 204                 }
 205
 206                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 207                         continue;
 208                 }
 209
 210                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 211                         continue;
 212                 }
 213
 214                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 215                         continue;
 216                 }
 217
 218                 PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
 219                 ifcount++;
 220         }
 221         talloc_free(tmp_ctx);
 222         return pylist;
 223 }
 224
 225 static PyObject *py_strcasecmp_m(PyObject *self, PyObject *args)
 226 {
 227         char *s1, *s2;
 228
 229         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 230                 return NULL;
 231
 232         return PyInt_FromLong(strcasecmp_m(s1, s2));
 233 }
 234
 235 static PyObject *py_strstr_m(PyObject *self, PyObject *args)
 236 {
 237         char *s1, *s2, *ret;
 238
 239         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 240                 return NULL;
 241
 242         ret = strstr_m(s1, s2);
 243         if (!ret) {
 244                 Py_RETURN_NONE;
 245         }
 246         return PyString_FromString(ret);
 247 }
 248
 249 static PyMethodDef py_misc_methods[] = {
 250         { "generate_random_str", (PyCFunction)py_generate_random_str, METH_VARARGS,
 251                 "generate_random_str(len) -> string\n"
 252                 "Generate random string with specified length." },
 253         { "generate_random_password", (PyCFunction)py_generate_random_password,
 254                 METH_VARARGS, "generate_random_password(min, max) -> string\n"
 255                 "Generate random password with a length >= min and <= max." },
 256         { "unix2nttime", (PyCFunction)py_unix2nttime, METH_VARARGS,
 257                 "unix2nttime(timestamp) -> nttime" },
 258         { "nttime2unix", (PyCFunction)py_nttime2unix, METH_VARARGS,
 259                 "nttime2unix(nttime) -> timestamp" },
 260         { "nttime2string", (PyCFunction)py_nttime2string, METH_VARARGS,
 261                 "nttime2string(nttime) -> string" },
 262         { "set_debug_level", (PyCFunction)py_set_debug_level, METH_VARARGS,
 263                 "set debug level" },
 264         { "get_debug_level", (PyCFunction)py_get_debug_level, METH_NOARGS,
 265                 "get debug level" },
 266         { "interface_ips", (PyCFunction)py_interface_ips, METH_VARARGS,
 267                 "get interface IP address list"},
 268         { "strcasecmp_m", (PyCFunction)py_strcasecmp_m, METH_VARARGS,
 269                 "(for testing) compare two strings using Samba's strcasecmp_m()"},
 270         { "strstr_m", (PyCFunction)py_strstr_m, METH_VARARGS,
 271                 "(for testing) find one string in another with Samba's strstr_m()"},
 272         { NULL }
 273 };
 274
 275 void init_glue(void)
 276 {
 277         PyObject *m;
 278
 279         debug_setup_talloc_log();
 280
 281         m = Py_InitModule3("_glue", py_misc_methods,
 282                            "Python bindings for miscellaneous Samba functions.");
 283         if (m == NULL)
 284                 return;
 285
 286         PyModule_AddObject(m, "version",
 287                                            PyString_FromString(SAMBA_VERSION_STRING));
 288 }
 289