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 /*
 125   return the list of interface IPs we have configured
 126   takes an loadparm context, returns a list of IPs in string form
 127
 128   Does not return addresses on 127.0.0.0/8
 129  */
 130 static PyObject *py_interface_ips(PyObject *self, PyObject *args)
 131 {
 132         PyObject *pylist;
 133         int count;
 134         TALLOC_CTX *tmp_ctx;
 135         PyObject *py_lp_ctx;
 136         struct loadparm_context *lp_ctx;
 137         struct interface *ifaces;
 138         int i, ifcount;
 139         int all_interfaces = 1;
 140
 141         if (!PyArg_ParseTuple(args, "O|i", &py_lp_ctx, &all_interfaces))
 142                 return NULL;
 143
 144         tmp_ctx = talloc_new(NULL);
 145         if (tmp_ctx == NULL) {
 146                 PyErr_NoMemory();
 147                 return NULL;
 148         }
 149
 150         lp_ctx = lpcfg_from_py_object(tmp_ctx, py_lp_ctx);
 151         if (lp_ctx == NULL) {
 152                 talloc_free(tmp_ctx);
 153                 return NULL;
 154         }
 155
 156         load_interface_list(tmp_ctx, lp_ctx, &ifaces);
 157
 158         count = iface_list_count(ifaces);
 159
 160         /* first count how many are not loopback addresses */
 161         for (ifcount = i = 0; i<count; i++) {
 162                 const char *ip = iface_list_n_ip(ifaces, i);
 163
 164                 if (all_interfaces) {
 165                         ifcount++;
 166                         continue;
 167                 }
 168
 169                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 170                         continue;
 171                 }
 172
 173                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 174                         continue;
 175                 }
 176
 177                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 178                         continue;
 179                 }
 180
 181                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 182                         continue;
 183                 }
 184
 185                 ifcount++;
 186         }
 187
 188         pylist = PyList_New(ifcount);
 189         for (ifcount = i = 0; i<count; i++) {
 190                 const char *ip = iface_list_n_ip(ifaces, i);
 191
 192                 if (all_interfaces) {
 193                         PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
 194                         ifcount++;
 195                         continue;
 196                 }
 197
 198                 if (iface_list_same_net(ip, "127.0.0.1", "255.0.0.0")) {
 199                         continue;
 200                 }
 201
 202                 if (iface_list_same_net(ip, "169.254.0.0", "255.255.0.0")) {
 203                         continue;
 204                 }
 205
 206                 if (iface_list_same_net(ip, "::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")) {
 207                         continue;
 208                 }
 209
 210                 if (iface_list_same_net(ip, "fe80::", "ffff:ffff:ffff:ffff::")) {
 211                         continue;
 212                 }
 213
 214                 PyList_SetItem(pylist, ifcount, PyString_FromString(ip));
 215                 ifcount++;
 216         }
 217         talloc_free(tmp_ctx);
 218         return pylist;
 219 }
 220
 221 static PyObject *py_strcasecmp_m(PyObject *self, PyObject *args)
 222 {
 223         char *s1, *s2;
 224
 225         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 226                 return NULL;
 227
 228         return PyInt_FromLong(strcasecmp_m(s1, s2));
 229 }
 230
 231 static PyObject *py_strstr_m(PyObject *self, PyObject *args)
 232 {
 233         char *s1, *s2, *ret;
 234
 235         if (!PyArg_ParseTuple(args, "ss", &s1, &s2))
 236                 return NULL;
 237
 238         ret = strstr_m(s1, s2);
 239         if (!ret) {
 240                 Py_RETURN_NONE;
 241         }
 242         return PyString_FromString(ret);
 243 }
 244
 245 static PyMethodDef py_misc_methods[] = {
 246         { "generate_random_str", (PyCFunction)py_generate_random_str, METH_VARARGS,
 247                 "generate_random_str(len) -> string\n"
 248                 "Generate random string with specified length." },
 249         { "generate_random_password", (PyCFunction)py_generate_random_password,
 250                 METH_VARARGS, "generate_random_password(min, max) -> string\n"
 251                 "Generate random password with a length >= min and <= max." },
 252         { "unix2nttime", (PyCFunction)py_unix2nttime, METH_VARARGS,
 253                 "unix2nttime(timestamp) -> nttime" },
 254         { "nttime2unix", (PyCFunction)py_nttime2unix, METH_VARARGS,
 255                 "nttime2unix(nttime) -> timestamp" },
 256         { "nttime2string", (PyCFunction)py_nttime2string, METH_VARARGS,
 257                 "nttime2string(nttime) -> string" },
 258         { "set_debug_level", (PyCFunction)py_set_debug_level, METH_VARARGS,
 259                 "set debug level" },
 260         { "get_debug_level", (PyCFunction)py_get_debug_level, METH_NOARGS,
 261                 "get debug level" },
 262         { "interface_ips", (PyCFunction)py_interface_ips, METH_VARARGS,
 263                 "interface_ips(lp_ctx[, all_interfaces) -> list_of_ifaces\n"
 264                 "\n"
 265                 "get interface IP address list"},
 266         { "strcasecmp_m", (PyCFunction)py_strcasecmp_m, METH_VARARGS,
 267                 "(for testing) compare two strings using Samba's strcasecmp_m()"},
 268         { "strstr_m", (PyCFunction)py_strstr_m, METH_VARARGS,
 269                 "(for testing) find one string in another with Samba's strstr_m()"},
 270         { NULL }
 271 };
 272
 273 void init_glue(void)
 274 {
 275         PyObject *m;
 276
 277         debug_setup_talloc_log();
 278
 279         m = Py_InitModule3("_glue", py_misc_methods,
 280                            "Python bindings for miscellaneous Samba functions.");
 281         if (m == NULL)
 282                 return;
 283
 284         PyModule_AddObject(m, "version",
 285                                            PyString_FromString(SAMBA_VERSION_STRING));
 286 }
 287