source4/auth/credentials/pycredentials.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #include <Python.h>
  20 #include "includes.h"
  21 #include "pycredentials.h"
  22 #include "param/param.h"
  23 #include "lib/cmdline/credentials.h"
  24 #include "librpc/gen_ndr/samr.h" /* for struct samr_Password */
  25 #include "libcli/util/pyerrors.h"
  26 #include "param/pyparam.h"
  27 #include <tevent.h>
  28
  29 static PyObject *PyString_FromStringOrNULL(const char *str)
  30 {
  31         if (str == NULL)
  32                 Py_RETURN_NONE;
  33         return PyString_FromString(str);
  34 }
  35
  36 static PyObject *py_creds_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
  37 {
  38         py_talloc_Object *ret = (py_talloc_Object *)type->tp_alloc(type, 0);
  39         if (ret == NULL) {
  40                 PyErr_NoMemory();
  41                 return NULL;
  42         }
  43         ret->talloc_ctx = talloc_new(NULL);
  44         if (ret->talloc_ctx == NULL) {
  45                 PyErr_NoMemory();
  46                 return NULL;
  47         }
  48         ret->ptr = cli_credentials_init(ret->talloc_ctx);
  49         return (PyObject *)ret;
  50 }
  51
  52 static PyObject *py_creds_get_username(py_talloc_Object *self)
  53 {
  54         return PyString_FromStringOrNULL(cli_credentials_get_username(PyCredentials_AsCliCredentials(self)));
  55 }
  56
  57 static PyObject *py_creds_set_username(py_talloc_Object *self, PyObject *args)
  58 {
  59         char *newval;
  60         enum credentials_obtained obt = CRED_SPECIFIED;
  61         if (!PyArg_ParseTuple(args, "s|i", &newval, &obt))
  62                 return NULL;
  63
  64         return PyBool_FromLong(cli_credentials_set_username(PyCredentials_AsCliCredentials(self), newval, obt));
  65 }
  66
  67 static PyObject *py_creds_get_password(py_talloc_Object *self)
  68 {
  69         return PyString_FromStringOrNULL(cli_credentials_get_password(PyCredentials_AsCliCredentials(self)));
  70 }
  71
  72
  73 static PyObject *py_creds_set_password(py_talloc_Object *self, PyObject *args)
  74 {
  75         char *newval;
  76         enum credentials_obtained obt = CRED_SPECIFIED;
  77         if (!PyArg_ParseTuple(args, "s|i", &newval, &obt))
  78                 return NULL;
  79
  80         return PyBool_FromLong(cli_credentials_set_password(PyCredentials_AsCliCredentials(self), newval, obt));
  81 }
  82
  83 static PyObject *py_creds_get_domain(py_talloc_Object *self)
  84 {
  85         return PyString_FromStringOrNULL(cli_credentials_get_domain(PyCredentials_AsCliCredentials(self)));
  86 }
  87
  88 static PyObject *py_creds_set_domain(py_talloc_Object *self, PyObject *args)
  89 {
  90         char *newval;
  91         enum credentials_obtained obt = CRED_SPECIFIED;
  92         if (!PyArg_ParseTuple(args, "s|i", &newval, &obt))
  93                 return NULL;
  94
  95         return PyBool_FromLong(cli_credentials_set_domain(PyCredentials_AsCliCredentials(self), newval, obt));
  96 }
  97
  98 static PyObject *py_creds_get_realm(py_talloc_Object *self)
  99 {
 100         return PyString_FromStringOrNULL(cli_credentials_get_realm(PyCredentials_AsCliCredentials(self)));
 101 }
 102
 103 static PyObject *py_creds_set_realm(py_talloc_Object *self, PyObject *args)
 104 {
 105         char *newval;
 106         enum credentials_obtained obt = CRED_SPECIFIED;
 107         if (!PyArg_ParseTuple(args, "s|i", &newval, &obt))
 108                 return NULL;
 109
 110         return PyBool_FromLong(cli_credentials_set_realm(PyCredentials_AsCliCredentials(self), newval, obt));
 111 }
 112
 113 static PyObject *py_creds_get_bind_dn(py_talloc_Object *self)
 114 {
 115         return PyString_FromStringOrNULL(cli_credentials_get_bind_dn(PyCredentials_AsCliCredentials(self)));
 116 }
 117
 118 static PyObject *py_creds_set_bind_dn(py_talloc_Object *self, PyObject *args)
 119 {
 120         char *newval;
 121         if (!PyArg_ParseTuple(args, "s", &newval))
 122                 return NULL;
 123
 124         return PyBool_FromLong(cli_credentials_set_bind_dn(PyCredentials_AsCliCredentials(self), newval));
 125 }
 126
 127 static PyObject *py_creds_get_workstation(py_talloc_Object *self)
 128 {
 129         return PyString_FromStringOrNULL(cli_credentials_get_workstation(PyCredentials_AsCliCredentials(self)));
 130 }
 131
 132 static PyObject *py_creds_set_workstation(py_talloc_Object *self, PyObject *args)
 133 {
 134         char *newval;
 135         enum credentials_obtained obt = CRED_SPECIFIED;
 136         if (!PyArg_ParseTuple(args, "s|i", &newval, &obt))
 137                 return NULL;
 138
 139         return PyBool_FromLong(cli_credentials_set_workstation(PyCredentials_AsCliCredentials(self), newval, obt));
 140 }
 141
 142 static PyObject *py_creds_is_anonymous(py_talloc_Object *self)
 143 {
 144         return PyBool_FromLong(cli_credentials_is_anonymous(PyCredentials_AsCliCredentials(self)));
 145 }
 146
 147 static PyObject *py_creds_set_anonymous(py_talloc_Object *self)
 148 {
 149         cli_credentials_set_anonymous(PyCredentials_AsCliCredentials(self));
 150         Py_RETURN_NONE;
 151 }
 152
 153 static PyObject *py_creds_authentication_requested(py_talloc_Object *self)
 154 {
 155         return PyBool_FromLong(cli_credentials_authentication_requested(PyCredentials_AsCliCredentials(self)));
 156 }
 157
 158 static PyObject *py_creds_wrong_password(py_talloc_Object *self)
 159 {
 160         return PyBool_FromLong(cli_credentials_wrong_password(PyCredentials_AsCliCredentials(self)));
 161 }
 162
 163 static PyObject *py_creds_set_cmdline_callbacks(py_talloc_Object *self)
 164 {
 165         return PyBool_FromLong(cli_credentials_set_cmdline_callbacks(PyCredentials_AsCliCredentials(self)));
 166 }
 167
 168 static PyObject *py_creds_parse_string(py_talloc_Object *self, PyObject *args)
 169 {
 170         char *newval;
 171         enum credentials_obtained obt = CRED_SPECIFIED;
 172         if (!PyArg_ParseTuple(args, "s|i", &newval, &obt))
 173                 return NULL;
 174
 175         cli_credentials_parse_string(PyCredentials_AsCliCredentials(self), newval, obt);
 176         Py_RETURN_NONE;
 177 }
 178
 179 static PyObject *py_creds_get_nt_hash(py_talloc_Object *self)
 180 {
 181         const struct samr_Password *ntpw = cli_credentials_get_nt_hash(PyCredentials_AsCliCredentials(self), self->ptr);
 182
 183         return PyString_FromStringAndSize(discard_const_p(char, ntpw->hash), 16);
 184 }
 185
 186 static PyObject *py_creds_set_kerberos_state(py_talloc_Object *self, PyObject *args)
 187 {
 188         int state;
 189         if (!PyArg_ParseTuple(args, "i", &state))
 190                 return NULL;
 191
 192         cli_credentials_set_kerberos_state(PyCredentials_AsCliCredentials(self), state);
 193         Py_RETURN_NONE;
 194 }
 195
 196 static PyObject *py_creds_set_krb_forwardable(py_talloc_Object *self, PyObject *args)
 197 {
 198         int state;
 199         if (!PyArg_ParseTuple(args, "i", &state))
 200                 return NULL;
 201
 202         cli_credentials_set_krb_forwardable(PyCredentials_AsCliCredentials(self), state);
 203         Py_RETURN_NONE;
 204 }
 205
 206 static PyObject *py_creds_guess(py_talloc_Object *self, PyObject *args)
 207 {
 208         PyObject *py_lp_ctx = Py_None;
 209         struct loadparm_context *lp_ctx;
 210         TALLOC_CTX *mem_ctx;
 211         struct cli_credentials *creds;
 212
 213         creds = PyCredentials_AsCliCredentials(self);
 214
 215         if (!PyArg_ParseTuple(args, "|O", &py_lp_ctx))
 216                 return NULL;
 217
 218         mem_ctx = talloc_new(NULL);
 219         if (mem_ctx == NULL) {
 220                 PyErr_NoMemory();
 221                 return NULL;
 222         }
 223
 224         lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
 225         if (lp_ctx == NULL) {
 226                 talloc_free(mem_ctx);
 227                 return NULL;
 228         }
 229
 230         cli_credentials_guess(creds, lp_ctx);
 231
 232         talloc_free(mem_ctx);
 233
 234         Py_RETURN_NONE;
 235 }
 236
 237 static PyObject *py_creds_set_machine_account(py_talloc_Object *self, PyObject *args)
 238 {
 239         PyObject *py_lp_ctx = Py_None;
 240         struct loadparm_context *lp_ctx;
 241         NTSTATUS status;
 242         struct cli_credentials *creds;
 243         TALLOC_CTX *mem_ctx;
 244
 245         creds = PyCredentials_AsCliCredentials(self);
 246
 247         if (!PyArg_ParseTuple(args, "|O", &py_lp_ctx))
 248                 return NULL;
 249
 250         mem_ctx = talloc_new(NULL);
 251         if (mem_ctx == NULL) {
 252                 PyErr_NoMemory();
 253                 return NULL;
 254         }
 255
 256         lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
 257         if (lp_ctx == NULL) {
 258                 talloc_free(mem_ctx);
 259                 return NULL;
 260         }
 261
 262         status = cli_credentials_set_machine_account(creds, lp_ctx);
 263         talloc_free(mem_ctx);
 264
 265         PyErr_NTSTATUS_IS_ERR_RAISE(status);
 266
 267         Py_RETURN_NONE;
 268 }
 269
 270 PyObject *PyCredentialCacheContainer_from_ccache_container(struct ccache_container *ccc)
 271 {
 272         PyCredentialCacheContainerObject *py_ret;
 273
 274         if (ccc == NULL) {
 275                 Py_RETURN_NONE;
 276         }
 277
 278         py_ret = (PyCredentialCacheContainerObject *)PyCredentialCacheContainer.tp_alloc(&PyCredentialCacheContainer, 0);
 279         if (py_ret == NULL) {
 280                 PyErr_NoMemory();
 281                 return NULL;
 282         }
 283         py_ret->mem_ctx = talloc_new(NULL);
 284         py_ret->ccc = talloc_reference(py_ret->mem_ctx, ccc);
 285         return (PyObject *)py_ret;
 286 }
 287
 288
 289 static PyObject *py_creds_get_named_ccache(py_talloc_Object *self, PyObject *args)
 290 {
 291         PyObject *py_lp_ctx = Py_None;
 292         char *ccache_name;
 293         struct loadparm_context *lp_ctx;
 294         struct ccache_container *ccc;
 295         struct tevent_context *event_ctx;
 296         int ret;
 297         const char *error_string;
 298         struct cli_credentials *creds;
 299         TALLOC_CTX *mem_ctx;
 300
 301         creds = PyCredentials_AsCliCredentials(self);
 302
 303         if (!PyArg_ParseTuple(args, "|Os", &py_lp_ctx, &ccache_name))
 304                 return NULL;
 305
 306         mem_ctx = talloc_new(NULL);
 307         if (mem_ctx == NULL) {
 308                 PyErr_NoMemory();
 309                 return NULL;
 310         }
 311
 312         lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
 313         if (lp_ctx == NULL) {
 314                 talloc_free(mem_ctx);
 315                 return NULL;
 316         }
 317
 318         event_ctx = tevent_context_init(mem_ctx);
 319
 320         ret = cli_credentials_get_named_ccache(creds, event_ctx, lp_ctx,
 321                                                ccache_name, &ccc, &error_string);
 322         talloc_unlink(mem_ctx, lp_ctx);
 323         if (ret == 0) {
 324                 talloc_steal(ccc, event_ctx);
 325                 talloc_free(mem_ctx);
 326                 return PyCredentialCacheContainer_from_ccache_container(ccc);
 327         }
 328
 329         PyErr_SetString(PyExc_RuntimeError, error_string?error_string:"NULL");
 330
 331         talloc_free(mem_ctx);
 332         return NULL;
 333 }
 334
 335 static PyObject *py_creds_set_gensec_features(py_talloc_Object *self, PyObject *args)
 336 {
 337         unsigned int gensec_features;
 338
 339         if (!PyArg_ParseTuple(args, "I", &gensec_features))
 340                 return NULL;
 341
 342         cli_credentials_set_gensec_features(PyCredentials_AsCliCredentials(self), gensec_features);
 343
 344         Py_RETURN_NONE;
 345 }
 346
 347 static PyObject *py_creds_get_gensec_features(py_talloc_Object *self, PyObject *args)
 348 {
 349         unsigned int gensec_features;
 350
 351         gensec_features = cli_credentials_get_gensec_features(PyCredentials_AsCliCredentials(self));
 352         return PyInt_FromLong(gensec_features);
 353 }
 354
 355
 356 static PyMethodDef py_creds_methods[] = {
 357         { "get_username", (PyCFunction)py_creds_get_username, METH_NOARGS,
 358                 "S.get_username() -> username\nObtain username." },
 359         { "set_username", (PyCFunction)py_creds_set_username, METH_VARARGS,
 360                 "S.set_username(name, obtained=CRED_SPECIFIED) -> None\n"
 361                 "Change username." },
 362         { "get_password", (PyCFunction)py_creds_get_password, METH_NOARGS,
 363                 "S.get_password() -> password\n"
 364                 "Obtain password." },
 365         { "set_password", (PyCFunction)py_creds_set_password, METH_VARARGS,
 366                 "S.set_password(password, obtained=CRED_SPECIFIED) -> None\n"
 367                 "Change password." },
 368         { "get_domain", (PyCFunction)py_creds_get_domain, METH_NOARGS,
 369                 "S.get_domain() -> domain\n"
 370                 "Obtain domain name." },
 371         { "set_domain", (PyCFunction)py_creds_set_domain, METH_VARARGS,
 372                 "S.set_domain(domain, obtained=CRED_SPECIFIED) -> None\n"
 373                 "Change domain name." },
 374         { "get_realm", (PyCFunction)py_creds_get_realm, METH_NOARGS,
 375                 "S.get_realm() -> realm\n"
 376                 "Obtain realm name." },
 377         { "set_realm", (PyCFunction)py_creds_set_realm, METH_VARARGS,
 378                 "S.set_realm(realm, obtained=CRED_SPECIFIED) -> None\n"
 379                 "Change realm name." },
 380         { "get_bind_dn", (PyCFunction)py_creds_get_bind_dn, METH_NOARGS,
 381                 "S.get_bind_dn() -> bind dn\n"
 382                 "Obtain bind DN." },
 383         { "set_bind_dn", (PyCFunction)py_creds_set_bind_dn, METH_VARARGS,
 384                 "S.set_bind_dn(bind_dn) -> None\n"
 385                 "Change bind DN." },
 386         { "is_anonymous", (PyCFunction)py_creds_is_anonymous, METH_NOARGS,
 387                 NULL },
 388         { "set_anonymous", (PyCFunction)py_creds_set_anonymous, METH_NOARGS,
 389                 "S.set_anonymous() -> None\n"
 390                 "Use anonymous credentials." },
 391         { "get_workstation", (PyCFunction)py_creds_get_workstation, METH_NOARGS,
 392                 NULL },
 393         { "set_workstation", (PyCFunction)py_creds_set_workstation, METH_VARARGS,
 394                 NULL },
 395         { "authentication_requested", (PyCFunction)py_creds_authentication_requested, METH_NOARGS,
 396                 NULL },
 397         { "wrong_password", (PyCFunction)py_creds_wrong_password, METH_NOARGS,
 398                 "S.wrong_password() -> bool\n"
 399                 "Indicate the returned password was incorrect." },
 400         { "set_cmdline_callbacks", (PyCFunction)py_creds_set_cmdline_callbacks, METH_NOARGS,
 401                 "S.set_cmdline_callbacks() -> bool\n"
 402                 "Use command-line to obtain credentials not explicitly set." },
 403         { "parse_string", (PyCFunction)py_creds_parse_string, METH_VARARGS,
 404                 "S.parse_string(text, obtained=CRED_SPECIFIED) -> None\n"
 405                 "Parse credentials string." },
 406         { "get_nt_hash", (PyCFunction)py_creds_get_nt_hash, METH_NOARGS,
 407                 NULL },
 408         { "set_kerberos_state", (PyCFunction)py_creds_set_kerberos_state, METH_VARARGS,
 409                 NULL },
 410         { "set_krb_forwardable", (PyCFunction)py_creds_set_krb_forwardable, METH_VARARGS,
 411                 NULL },
 412         { "guess", (PyCFunction)py_creds_guess, METH_VARARGS, NULL },
 413         { "set_machine_account", (PyCFunction)py_creds_set_machine_account, METH_VARARGS, NULL },
 414         { "get_named_ccache", (PyCFunction)py_creds_get_named_ccache, METH_VARARGS, NULL },
 415         { "set_gensec_features", (PyCFunction)py_creds_set_gensec_features, METH_VARARGS, NULL },
 416         { "get_gensec_features", (PyCFunction)py_creds_get_gensec_features, METH_NOARGS, NULL },
 417         { NULL }
 418 };
 419
 420 PyTypeObject PyCredentials = {
 421         .tp_name = "Credentials",
 422         .tp_basicsize = sizeof(py_talloc_Object),
 423         .tp_new = py_creds_new,
 424         .tp_flags = Py_TPFLAGS_DEFAULT,
 425         .tp_methods = py_creds_methods,
 426 };
 427
 428
 429 PyTypeObject PyCredentialCacheContainer = {
 430         .tp_name = "CredentialCacheContainer",
 431         .tp_basicsize = sizeof(py_talloc_Object),
 432         .tp_flags = Py_TPFLAGS_DEFAULT,
 433 };
 434
 435 void initcredentials(void)
 436 {
 437         PyObject *m;
 438         PyTypeObject *talloc_type = PyTalloc_GetObjectType();
 439         if (talloc_type == NULL)
 440                 return;
 441
 442         PyCredentials.tp_base = PyCredentialCacheContainer.tp_base = talloc_type;
 443
 444         if (PyType_Ready(&PyCredentials) < 0)
 445                 return;
 446
 447         if (PyType_Ready(&PyCredentialCacheContainer) < 0)
 448                 return;
 449
 450         m = Py_InitModule3("credentials", NULL, "Credentials management.");
 451         if (m == NULL)
 452                 return;
 453
 454         PyModule_AddObject(m, "AUTO_USE_KERBEROS", PyInt_FromLong(CRED_AUTO_USE_KERBEROS));
 455         PyModule_AddObject(m, "DONT_USE_KERBEROS", PyInt_FromLong(CRED_DONT_USE_KERBEROS));
 456         PyModule_AddObject(m, "MUST_USE_KERBEROS", PyInt_FromLong(CRED_MUST_USE_KERBEROS));
 457
 458         PyModule_AddObject(m, "AUTO_KRB_FORWARDABLE",  PyInt_FromLong(CRED_AUTO_KRB_FORWARDABLE));
 459         PyModule_AddObject(m, "NO_KRB_FORWARDABLE",    PyInt_FromLong(CRED_NO_KRB_FORWARDABLE));
 460         PyModule_AddObject(m, "FORCE_KRB_FORWARDABLE", PyInt_FromLong(CRED_FORCE_KRB_FORWARDABLE));
 461
 462         Py_INCREF(&PyCredentials);
 463         PyModule_AddObject(m, "Credentials", (PyObject *)&PyCredentials);
 464         Py_INCREF(&PyCredentialCacheContainer);
 465         PyModule_AddObject(m, "CredentialCacheContainer", (PyObject *)&PyCredentialCacheContainer);
 466 }