bindings/python/helpers.c

/*
 * helpers.c
 *
 * helper functions for Python
 * 
 * Author: Klaus Kaempf <kkaempf@suse.de>
 * 
 */

/*****************************************************************************
* Copyright (C) 2008 Novell Inc. All rights reserved.
* Copyright (C) 2008 SUSE Linux Products GmbH. All rights reserved.
* 
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 
*   - Redistributions of source code must retain the above copyright notice,
*     this list of conditions and the following disclaimer.
* 
*   - Redistributions in binary form must reproduce the above copyright notice,
*     this list of conditions and the following disclaimer in the documentation
*     and/or other materials provided with the distribution.
* 
*   - Neither the name of Novell Inc. nor of SUSE Linux Products GmbH nor the
*     names of its contributors may be used to endorse or promote products
*     derived from this software without specific prior written permission.
* 
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Novell Inc. OR SUSE Linux Products GmbH OR
* THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/


/* convert openwsman hash_t* to hash PyObject (string pairs) */
static PyObject *
hash2value( hash_t *hash )
{
  return NULL;
}


#if 0 /* currently unused */
/* create hash (h == NULL) or add to hash (h != NULL) from hash PyObject */
static hash_t *
value2hash( hash_t *h, PyObject *v )
{
  return h;
}
#endif


/*
 * callback function if client authentication fails
 *
 */
static void
auth_request_callback( WsManClient *client, wsman_auth_type_t t, char **username, char **password )
{
    PyObject *prv = NULL;
    PyObject *puser = NULL;
    PyObject *ppass = NULL;
    PyObject *c = SWIG_NewPointerObj((void*) client, SWIGTYPE_p__WsManClient, 0);
  
    PyObject *pyfunc = PyObject_GetAttrString(c, "auth_request_callback"); 

    *username = NULL;		/* abort authentication */

    if (pyfunc == NULL)
    {
        PyErr_Print(); 
        PyErr_Clear(); 
        goto cleanup;
    }
    if (! PyCallable_Check(pyfunc)) 
    {
        goto cleanup; 
    }
    
    prv = PyObject_CallObject(pyfunc, NULL);
    if (PyErr_Occurred())
    {
        PyErr_Clear(); 
        goto cleanup; 
    }

    /* expect a 2-elements tuple as return */

    if (! PyTuple_Check(prv)
	|| (PyTuple_Size(prv) != 2))
    {
        goto cleanup; 
    }
    puser = PyTuple_GetItem(prv, 0); 
    ppass = PyTuple_GetItem(prv, 0); 
    if (PyString_Check(puser) && PyString_Check(ppass))
    {
        *username = strdup(PyString_AsString(puser));
        *password = strdup(PyString_AsString(ppass));
    }

cleanup:
    if (puser) Py_DecRef(puser);
    if (ppass) Py_DecRef(ppass);
    if (pyfunc) Py_DecRef(pyfunc);
    if (prv) Py_DecRef(prv);
 
    return;
}