source4/libnet/py_net.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2008-2010
   5    Copyright (C) Kamen Mazdrashki <kamen.mazdrashki@postpath.com> 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include <Python.h>
  22 #include "includes.h"
  23 #include "libnet.h"
  24 #include "auth/credentials/pycredentials.h"
  25 #include "libcli/security/security.h"
  26 #include "lib/events/events.h"
  27 #include "param/param.h"
  28 #include "param/pyparam.h"
  29
  30 typedef struct {
  31         PyObject_HEAD
  32         TALLOC_CTX *mem_ctx;
  33         struct libnet_context *libnet_ctx;
  34         struct tevent_context *ev;
  35 } py_net_Object;
  36
  37 static PyObject *py_net_join(py_net_Object *self, PyObject *args, PyObject *kwargs)
  38 {
  39         struct libnet_Join r;
  40         NTSTATUS status;
  41         PyObject *result;
  42         TALLOC_CTX *mem_ctx;
  43         const char *kwnames[] = { "domain_name", "netbios_name", "join_type", "level", NULL };
  44
  45         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "ssii:Join", discard_const_p(char *, kwnames),
  46                                          &r.in.domain_name, &r.in.netbios_name,
  47                                          &r.in.join_type, &r.in.level))
  48                 return NULL;
  49
  50         mem_ctx = talloc_new(self->mem_ctx);
  51
  52         status = libnet_Join(self->libnet_ctx, mem_ctx, &r);
  53         if (NT_STATUS_IS_ERR(status)) {
  54                 PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
  55                 talloc_free(mem_ctx);
  56                 return NULL;
  57         }
  58
  59         result = Py_BuildValue("sss", r.out.join_password,
  60                                dom_sid_string(mem_ctx, r.out.domain_sid),
  61                                r.out.domain_name);
  62
  63         talloc_free(mem_ctx);
  64
  65         return result;
  66 }
  67
  68 static const char py_net_join_doc[] = "join(domain_name, netbios_name, join_type, level) -> (join_password, domain_sid, domain_name)\n\n" \
  69 "Join the domain with the specified name.";
  70
  71 static PyObject *py_net_set_password(py_net_Object *self, PyObject *args, PyObject *kwargs)
  72 {
  73         union libnet_SetPassword r;
  74         NTSTATUS status;
  75         PyObject *py_creds;
  76         TALLOC_CTX *mem_ctx;
  77         struct tevent_context *ev;
  78         const char *kwnames[] = { "account_name", "domain_name", "newpassword", "credentials", NULL };
  79
  80         r.generic.level = LIBNET_SET_PASSWORD_GENERIC;
  81
  82         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "sssO:set_password", discard_const_p(char *, kwnames),
  83                                          &r.generic.in.account_name, &r.generic.in.domain_name,
  84                                          &r.generic.in.newpassword, &py_creds)) {
  85                 return NULL;
  86         }
  87
  88         /* FIXME: we really need to get a context from the caller or we may end
  89          * up with 2 event contexts */
  90         ev = s4_event_context_init(NULL);
  91         mem_ctx = talloc_new(ev);
  92
  93         status = libnet_SetPassword(self->libnet_ctx, mem_ctx, &r);
  94         if (NT_STATUS_IS_ERR(status)) {
  95                 PyErr_SetString(PyExc_RuntimeError,
  96                                 r.generic.out.error_string?r.generic.out.error_string:nt_errstr(status));
  97                 talloc_free(mem_ctx);
  98                 return NULL;
  99         }
 100
 101         talloc_free(mem_ctx);
 102
 103         Py_RETURN_NONE;
 104 }
 105
 106 static const char py_net_set_password_doc[] = "set_password(account_name, domain_name, newpassword) -> True\n\n" \
 107 "Set password for a user. You must supply credential with enough rights to do this.\n\n" \
 108 "Sample usage is:\n" \
 109 "net.set_password(account_name=<account_name>,\n" \
 110 "                domain_name=domain_name,\n" \
 111 "                newpassword=new_pass)\n";
 112
 113
 114 static PyObject *py_net_export_keytab(py_net_Object *self, PyObject *args, PyObject *kwargs)
 115 {
 116         struct libnet_export_keytab r;
 117         TALLOC_CTX *mem_ctx;
 118         const char *kwnames[] = { "keytab", NULL };
 119         NTSTATUS status;
 120
 121         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s:export_keytab", discard_const_p(char *, kwnames),
 122                                          &r.in.keytab_name)) {
 123                 return NULL;
 124         }
 125
 126         mem_ctx = talloc_new(self->mem_ctx);
 127
 128         status = libnet_export_keytab(self->libnet_ctx, mem_ctx, &r);
 129         if (NT_STATUS_IS_ERR(status)) {
 130                 PyErr_SetString(PyExc_RuntimeError,
 131                                 r.out.error_string?r.out.error_string:nt_errstr(status));
 132                 talloc_free(mem_ctx);
 133                 return NULL;
 134         }
 135
 136         talloc_free(mem_ctx);
 137
 138         Py_RETURN_NONE;
 139 }
 140
 141 static const char py_net_export_keytab_doc[] = "export_keytab(keytab, name)\n\n"
 142 "Export the DC keytab to a keytab file.";
 143
 144 static PyObject *py_net_time(py_net_Object *self, PyObject *args, PyObject *kwargs)
 145 {
 146         const char *kwnames[] = { "server_name", NULL };
 147         union libnet_RemoteTOD r;
 148         NTSTATUS status;
 149         TALLOC_CTX *mem_ctx;
 150         char timestr[64];
 151         PyObject *ret;
 152         struct tm *tm;
 153
 154         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s",
 155                 discard_const_p(char *, kwnames), &r.generic.in.server_name))
 156                 return NULL;
 157
 158         r.generic.level                 = LIBNET_REMOTE_TOD_GENERIC;
 159
 160         mem_ctx = talloc_new(NULL);
 161         if (mem_ctx == NULL) {
 162                 PyErr_NoMemory();
 163                 return NULL;
 164         }
 165
 166         status = libnet_RemoteTOD(self->libnet_ctx, mem_ctx, &r);
 167         if (!NT_STATUS_IS_OK(status)) {
 168                 PyErr_SetString(PyExc_RuntimeError,
 169                                 r.generic.out.error_string?r.generic.out.error_string:nt_errstr(status));
 170                 talloc_free(mem_ctx);
 171                 return NULL;
 172         }
 173
 174         ZERO_STRUCT(timestr);
 175         tm = localtime(&r.generic.out.time);
 176         strftime(timestr, sizeof(timestr)-1, "%c %Z",tm);
 177
 178         ret = PyString_FromString(timestr);
 179
 180         talloc_free(mem_ctx);
 181
 182         return ret;
 183 }
 184
 185 static const char py_net_time_doc[] = "time(server_name) -> timestr\n"
 186 "Retrieve the remote time on a server";
 187
 188 static PyObject *py_net_user_create(py_net_Object *self, PyObject *args, PyObject *kwargs)
 189 {
 190         const char *kwnames[] = { "username", NULL };
 191         NTSTATUS status;
 192         TALLOC_CTX *mem_ctx;
 193         struct libnet_CreateUser r;
 194
 195         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
 196                                                                          &r.in.user_name))
 197                 return NULL;
 198
 199         r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 200
 201         mem_ctx = talloc_new(NULL);
 202         if (mem_ctx == NULL) {
 203                 PyErr_NoMemory();
 204                 return NULL;
 205         }
 206
 207         status = libnet_CreateUser(self->libnet_ctx, mem_ctx, &r);
 208         if (!NT_STATUS_IS_OK(status)) {
 209                 PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
 210                 talloc_free(mem_ctx);
 211                 return NULL;
 212         }
 213
 214         talloc_free(mem_ctx);
 215
 216         Py_RETURN_NONE;
 217 }
 218
 219 static const char py_net_create_user_doc[] = "create_user(username)\n"
 220 "Create a new user.";
 221
 222 static PyObject *py_net_user_delete(py_net_Object *self, PyObject *args, PyObject *kwargs)
 223 {
 224         const char *kwnames[] = { "username", NULL };
 225         NTSTATUS status;
 226         TALLOC_CTX *mem_ctx;
 227         struct libnet_DeleteUser r;
 228
 229         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
 230                                                                          &r.in.user_name))
 231                 return NULL;
 232
 233         r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 234
 235         mem_ctx = talloc_new(NULL);
 236         if (mem_ctx == NULL) {
 237                 PyErr_NoMemory();
 238                 return NULL;
 239         }
 240
 241         status = libnet_DeleteUser(self->libnet_ctx, mem_ctx, &r);
 242         if (!NT_STATUS_IS_OK(status)) {
 243                 PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
 244                 talloc_free(mem_ctx);
 245                 return NULL;
 246         }
 247
 248         talloc_free(mem_ctx);
 249
 250         Py_RETURN_NONE;
 251 }
 252
 253 static const char py_net_delete_user_doc[] = "delete_user(username)\n"
 254 "Delete a user.";
 255
 256 static PyObject *py_dom_sid_FromSid(struct dom_sid *sid)
 257 {
 258         PyObject *mod_security, *dom_sid_Type;
 259
 260         mod_security = PyImport_ImportModule("samba.dcerpc.security");
 261         if (mod_security == NULL)
 262                 return NULL;
 263
 264         dom_sid_Type = PyObject_GetAttrString(mod_security, "dom_sid");
 265         if (dom_sid_Type == NULL)
 266                 return NULL;
 267
 268         return py_talloc_reference((PyTypeObject *)dom_sid_Type, sid);
 269 }
 270
 271 static PyObject *py_net_vampire(py_net_Object *self, PyObject *args, PyObject *kwargs)
 272 {
 273         const char *kwnames[] = { "domain", "target_dir", NULL };
 274         NTSTATUS status;
 275         TALLOC_CTX *mem_ctx;
 276         PyObject *ret;
 277         struct libnet_Vampire r;
 278
 279         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|z", discard_const_p(char *, kwnames),
 280                                          &r.in.domain_name, &r.in.targetdir)) {
 281                 return NULL;
 282         }
 283
 284         r.in.netbios_name  = lp_netbios_name(self->libnet_ctx->lp_ctx);
 285         r.out.error_string = NULL;
 286
 287         mem_ctx = talloc_new(NULL);
 288         if (mem_ctx == NULL) {
 289                 PyErr_NoMemory();
 290                 return NULL;
 291         }
 292
 293         status = libnet_Vampire(self->libnet_ctx, mem_ctx, &r);
 294
 295         if (!NT_STATUS_IS_OK(status)) {
 296                 PyErr_SetString(PyExc_RuntimeError,
 297                                 r.out.error_string ? r.out.error_string : nt_errstr(status));
 298                 talloc_free(mem_ctx);
 299                 return NULL;
 300         }
 301
 302         ret = Py_BuildValue("(sO)", r.out.domain_name, py_dom_sid_FromSid(r.out.domain_sid));
 303
 304         talloc_free(mem_ctx);
 305
 306         return ret;
 307 }
 308
 309 static const char py_net_vampire_doc[] = "vampire(domain, target_dir=None)\n"
 310                                          "Vampire a domain.";
 311
 312 static PyMethodDef net_obj_methods[] = {
 313         {"join", (PyCFunction)py_net_join, METH_VARARGS|METH_KEYWORDS, py_net_join_doc},
 314         {"set_password", (PyCFunction)py_net_set_password, METH_VARARGS|METH_KEYWORDS, py_net_set_password_doc},
 315         {"export_keytab", (PyCFunction)py_net_export_keytab, METH_VARARGS|METH_KEYWORDS, py_net_export_keytab_doc},
 316         {"time", (PyCFunction)py_net_time, METH_VARARGS|METH_KEYWORDS, py_net_time_doc},
 317         {"create_user", (PyCFunction)py_net_user_create, METH_VARARGS|METH_KEYWORDS, py_net_create_user_doc},
 318         {"delete_user", (PyCFunction)py_net_user_delete, METH_VARARGS|METH_KEYWORDS, py_net_delete_user_doc},
 319         {"vampire", (PyCFunction)py_net_vampire, METH_VARARGS|METH_KEYWORDS, py_net_vampire_doc},
 320         { NULL }
 321 };
 322
 323 static void py_net_dealloc(py_net_Object *self)
 324 {
 325         talloc_free(self->mem_ctx);
 326 }
 327
 328 static PyObject *net_obj_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 329 {
 330         PyObject *py_creds, *py_lp = Py_None;
 331         const char *kwnames[] = { "creds", "lp", NULL };
 332         py_net_Object *ret;
 333         struct loadparm_context *lp;
 334
 335         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|O",
 336                         discard_const_p(char *, kwnames), &py_creds, &py_lp))
 337                 return NULL;
 338
 339         ret = PyObject_New(py_net_Object, type);
 340         if (ret == NULL) {
 341                 return NULL;
 342         }
 343
 344         /* FIXME: we really need to get a context from the caller or we may end
 345          * up with 2 event contexts */
 346         ret->ev = s4_event_context_init(NULL);
 347         ret->mem_ctx = talloc_new(ret->ev);
 348
 349         lp = lp_from_py_object(ret->mem_ctx, py_lp);
 350         if (lp == NULL) {
 351                 Py_DECREF(ret);
 352                 return NULL;
 353         }
 354
 355         ret->libnet_ctx = libnet_context_init(ret->ev, lp);
 356         if (ret->libnet_ctx == NULL) {
 357                 PyErr_SetString(PyExc_RuntimeError, "Unable to initialize net");
 358                 Py_DECREF(ret);
 359                 return NULL;
 360         }
 361
 362         ret->libnet_ctx->cred = cli_credentials_from_py_object(py_creds);
 363         if (ret->libnet_ctx->cred == NULL) {
 364                 PyErr_SetString(PyExc_TypeError, "Expected credentials object");
 365                 Py_DECREF(ret);
 366                 return NULL;
 367         }
 368
 369         return (PyObject *)ret;
 370 }
 371
 372
 373 PyTypeObject py_net_Type = {
 374         PyObject_HEAD_INIT(NULL) 0,
 375         .tp_name = "net.Net",
 376         .tp_basicsize = sizeof(py_net_Object),
 377         .tp_dealloc = (destructor)py_net_dealloc,
 378         .tp_methods = net_obj_methods,
 379         .tp_new = net_obj_new,
 380 };
 381
 382 void initnet(void)
 383 {
 384         PyObject *m;
 385
 386         if (PyType_Ready(&py_net_Type) < 0)
 387                 return;
 388
 389         m = Py_InitModule3("net", NULL, NULL);
 390         if (m == NULL)
 391                 return;
 392
 393         Py_INCREF(&py_net_Type);
 394         PyModule_AddObject(m, "Net", (PyObject *)&py_net_Type);
 395 }