samba-mirror/source/python/py_common.c

/* 
   Python wrappers for DCERPC/SMB client routines.

   Copyright (C) Tim Potter, 2002
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"
#include "Python.h"

#include "python/py_common_proto.h"

/* Return a tuple of (error code, error string) from a WERROR */

PyObject *py_werror_tuple(WERROR werror)
{
	return Py_BuildValue("[is]", W_ERROR_V(werror), 
			     dos_errstr(werror));
}

/* Return a tuple of (error code, error string) from a WERROR */

PyObject *py_ntstatus_tuple(NTSTATUS ntstatus)
{
	return Py_BuildValue("[is]", NT_STATUS_V(ntstatus), 
			     nt_errstr(ntstatus));
}

/* Initialise samba client routines */

static BOOL initialised;

void py_samba_init(void)
{
	extern pstring global_myname;
	char *p;

	if (initialised)
		return;

	/* Load configuration file */

	if (!lp_load(dyn_CONFIGFILE, True, False, False))
		fprintf(stderr, "Can't load %s\n", dyn_CONFIGFILE);

	/* Misc other stuff */

	load_interfaces();
	
	fstrcpy(global_myname, myhostname());
	p = strchr(global_myname, '.');
	if (p)
		*p = 0;

	initialised = True;
}

/* Debuglevel routines */

PyObject *get_debuglevel(PyObject *self, PyObject *args)
{
	PyObject *debuglevel;

	if (!PyArg_ParseTuple(args, ""))
		return NULL;

	debuglevel = PyInt_FromLong(DEBUGLEVEL);

	return debuglevel;
}

PyObject *set_debuglevel(PyObject *self, PyObject *args)
{
	int debuglevel;

	if (!PyArg_ParseTuple(args, "i", &debuglevel))
		return NULL;

	DEBUGLEVEL = debuglevel;

	Py_INCREF(Py_None);
	return Py_None;
}

/* Initialise logging */

PyObject *py_setup_logging(PyObject *self, PyObject *args, PyObject *kw)
{
	BOOL interactive = False;
	char *logfilename = NULL;
	static char *kwlist[] = {"interactive", "logfilename", NULL};

	if (!PyArg_ParseTupleAndKeywords(
		    args, kw, "|is", kwlist, &interactive, &logfilename))
		return NULL;
	
	if (interactive && logfilename) {
		PyErr_SetString(PyExc_RuntimeError,
				"can't be interactive and set log file name");
		return NULL;
	}

	if (interactive)
		setup_logging("spoolss", True);

	if (logfilename) {
		lp_set_logfile(logfilename);
		setup_logging(logfilename, False);
		reopen_logs();
	}

	Py_INCREF(Py_None);
	return Py_None;
}

/* Return a cli_state to a RPC pipe on the given server.  Use the
   credentials passed if not NULL.  If an error occurs errstr is set to a
   string describing the error and NULL is returned.  If set, errstr must
   be freed by calling free(). */

struct cli_state *open_pipe_creds(char *server, PyObject *creds, 
				  char *pipe_name, char **errstr)
{
	char *username = "", *password = "", *domain = "";
	struct cli_state *cli;
	NTSTATUS result;
	struct in_addr server_ip;
	extern pstring global_myname;
	
	/* Extract credentials from the python dictionary */

	if (creds && PyDict_Size(creds) > 0) {
		PyObject *username_obj, *password_obj, *domain_obj;

		/* Check credentials passed are valid.  This means the
		   username, domain and password keys must exist and be
		   string objects. */

		username_obj = PyDict_GetItemString(creds, "username");
		domain_obj = PyDict_GetItemString(creds, "domain");
		password_obj = PyDict_GetItemString(creds, "password");

		if (!username_obj || !domain_obj || !password_obj) {
		creds_error:
			*errstr = strdup("invalid credentials");
			return NULL;
		}

		if (!PyString_Check(username_obj) || 
		    !PyString_Check(domain_obj) || 
		    !PyString_Check(password_obj))
			goto creds_error;

		username = PyString_AsString(username_obj);
		domain = PyString_AsString(domain_obj);
		password = PyString_AsString(password_obj);

		if (!username || !domain || !password)
			goto creds_error;
	}

	/* Now try to connect */

	if (!resolve_name(server, &server_ip, 0x20))  {
		asprintf(errstr, "unable to resolve %s", server);
		return NULL;
	}

	result = cli_full_connection(
		&cli, global_myname, server, &server_ip, 0, "IPC$", "IPC",
		username, domain, password, strlen(password));
	
	if (!NT_STATUS_IS_OK(result) || !cli_nt_session_open(cli, pipe_name)) {
		cli_shutdown(cli);
		free(cli);
		*errstr = strdup("pipe not available");
		return NULL;
	}

	*errstr = NULL;

	return cli;
}

/* Return true if a dictionary contains a "level" key with an integer
   value.  Set the value if so. */

BOOL get_level_value(PyObject *dict, uint32 *level)
{
	PyObject *obj;

	if (!(obj = PyDict_GetItemString(dict, "level")) ||
	    !PyInt_Check(obj))
		return False;

	if (level)
		*level = PyInt_AsLong(obj);

	return True;
}