source3/python/py_common.c

   1 /*
   2    Python wrappers for DCERPC/SMB client routines.
   3
   4    Copyright (C) Tim Potter, 2002
   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 2 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, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "includes.h"
  22 #include "Python.h"
  23
  24 #include "python/py_common.h"
  25
  26 /* Return a tuple of (error code, error string) from a WERROR */
  27
  28 PyObject *py_werror_tuple(WERROR werror)
  29 {
  30         return Py_BuildValue("[is]", W_ERROR_V(werror),
  31                              dos_errstr(werror));
  32 }
  33
  34 /* Return a tuple of (error code, error string) from a WERROR */
  35
  36 PyObject *py_ntstatus_tuple(NTSTATUS ntstatus)
  37 {
  38         return Py_BuildValue("[is]", NT_STATUS_V(ntstatus),
  39                              nt_errstr(ntstatus));
  40 }
  41
  42 /* Initialise samba client routines */
  43
  44 static BOOL initialised;
  45
  46 void py_samba_init(void)
  47 {
  48         if (initialised)
  49                 return;
  50
  51         /* Load configuration file */
  52
  53         if (!lp_load(dyn_CONFIGFILE, True, False, False))
  54                 fprintf(stderr, "Can't load %s\n", dyn_CONFIGFILE);
  55
  56         /* Misc other stuff */
  57
  58         load_interfaces();
  59
  60         initialised = True;
  61 }
  62
  63 /* Debuglevel routines */
  64
  65 PyObject *get_debuglevel(PyObject *self, PyObject *args)
  66 {
  67         PyObject *debuglevel;
  68
  69         if (!PyArg_ParseTuple(args, ""))
  70                 return NULL;
  71
  72         debuglevel = PyInt_FromLong(DEBUGLEVEL);
  73
  74         return debuglevel;
  75 }
  76
  77 PyObject *set_debuglevel(PyObject *self, PyObject *args)
  78 {
  79         int debuglevel;
  80
  81         if (!PyArg_ParseTuple(args, "i", &debuglevel))
  82                 return NULL;
  83
  84         DEBUGLEVEL = debuglevel;
  85
  86         Py_INCREF(Py_None);
  87         return Py_None;
  88 }
  89
  90 /* Initialise logging */
  91
  92 PyObject *py_setup_logging(PyObject *self, PyObject *args, PyObject *kw)
  93 {
  94         BOOL interactive = False;
  95         char *logfilename = NULL;
  96         static char *kwlist[] = {"interactive", "logfilename", NULL};
  97
  98         if (!PyArg_ParseTupleAndKeywords(args, kw, "|is", kwlist,
  99                                          &interactive, &logfilename))
 100                 return NULL;
 101
 102         if (interactive && logfilename) {
 103                 PyErr_SetString(PyExc_RuntimeError,
 104                                 "can't be interactive and set log file name");
 105                 return NULL;
 106         }
 107
 108         if (interactive)
 109                 setup_logging("spoolss", True);
 110
 111         if (logfilename) {
 112                 lp_set_logfile(logfilename);
 113                 setup_logging(logfilename, False);
 114                 reopen_logs();
 115         }
 116
 117         Py_INCREF(Py_None);
 118         return Py_None;
 119 }
 120
 121 struct cli_state *open_pipe_creds(char *system_name, PyObject *creds,
 122                                   cli_pipe_fn *connect_fn,
 123                                   struct cli_state *cli)
 124 {
 125         struct ntuser_creds nt_creds;
 126
 127         if (!cli) {
 128                 cli = (struct cli_state *)malloc(sizeof(struct cli_state));
 129                 if (!cli)
 130                         return NULL;
 131         }
 132
 133         ZERO_STRUCTP(cli);
 134
 135         /* Extract credentials from the python dictionary and initialise
 136            the ntuser_creds struct from them. */
 137
 138         ZERO_STRUCT(nt_creds);
 139         nt_creds.pwd.null_pwd = True;
 140
 141         if (creds && PyDict_Size(creds) > 0) {
 142                 char *username, *password, *domain;
 143                 PyObject *username_obj, *password_obj, *domain_obj;
 144
 145                 /* Check credentials passed are valid.  This means the
 146                    username, domain and password keys must exist and be
 147                    string objects. */
 148
 149                 username_obj = PyDict_GetItemString(creds, "username");
 150                 domain_obj = PyDict_GetItemString(creds, "domain");
 151                 password_obj = PyDict_GetItemString(creds, "password");
 152
 153                 if (!username_obj || !domain_obj || !password_obj) {
 154                 error:
 155
 156                         /* TODO: Either pass in the exception for the
 157                            module calling open_pipe_creds() or have a
 158                            global samba python module exception. */
 159
 160                         PyErr_SetString(PyExc_RuntimeError,
 161                                         "invalid credentials");
 162                         return NULL;
 163                 }
 164
 165                 if (!PyString_Check(username_obj) ||
 166                     !PyString_Check(domain_obj) ||
 167                     !PyString_Check(password_obj))
 168                         goto error;
 169
 170                 username = PyString_AsString(username_obj);
 171                 domain = PyString_AsString(domain_obj);
 172                 password = PyString_AsString(password_obj);
 173
 174                 if (!username || !domain || !password)
 175                         goto error;
 176
 177                 /* Initialise nt_creds structure with passed creds */
 178
 179                 fstrcpy(nt_creds.user_name, username);
 180                 fstrcpy(nt_creds.domain, domain);
 181
 182                 if (lp_encrypted_passwords())
 183                         pwd_make_lm_nt_16(&nt_creds.pwd, password);
 184                 else
 185                         pwd_set_cleartext(&nt_creds.pwd, password);
 186
 187                 nt_creds.pwd.null_pwd = False;
 188         }
 189
 190         /* Now try to connect */
 191
 192         if (!connect_fn(cli, system_name, &nt_creds)) {
 193                 if (cli) {
 194                         NTSTATUS error = cli_nt_error(cli);
 195
 196                         /* Raise an exception if something went wrong.
 197                            FIXME: This should be a more appropriate
 198                            exception than PyExc_RuntimeError */
 199
 200                         if (!NT_STATUS_IS_OK(error))
 201                                 PyErr_SetObject(PyExc_RuntimeError,
 202                                                 py_ntstatus_tuple(error));
 203                         else
 204                                 PyErr_SetString(PyExc_RuntimeError,
 205                                                 "error connecting to pipe");
 206                 }
 207
 208                 return NULL;
 209         }
 210
 211         return cli;
 212 }