envelope.c
2.67 KB
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2000 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Library Public License as published by
the Free Software Foundation; either version 2, 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <stdlib.h>
#include <envelope0.h>
int
envelope_create (envelope_t *penvelope, void *owner)
{
envelope_t envelope;
if (penvelope == NULL)
return EINVAL;
envelope = calloc (1, sizeof (*envelope));
if (envelope == NULL)
return ENOMEM;
envelope->owner = owner;
*penvelope = envelope;
return 0;
}
void
envelope_destroy (envelope_t *penvelope, void *owner)
{
if (penvelope && *penvelope)
{
envelope_t envelope = *penvelope;
if (envelope->owner == owner)
{
if (envelope->_destroy)
envelope->_destroy (envelope);
free (envelope);
}
*penvelope = NULL;
}
}
void *
envelope_get_owner (envelope_t envelope)
{
return (envelope) ? envelope->owner : NULL;
}
int
envelope_set_sender (envelope_t envelope,
int (*_sender) __P ((envelope_t, char *, size_t, size_t*)),
void *owner)
{
if (envelope == NULL)
return EINVAL;
if (envelope->owner != owner)
return EACCES;
envelope->_sender = _sender;
return 0;
}
int
envelope_sender (envelope_t envelope, char *buf, size_t len, size_t *pnwrite)
{
if (envelope == NULL)
return EINVAL;
if (envelope->_sender)
return envelope->_sender (envelope, buf, len, pnwrite);
if (buf && len)
*buf = '\0';
if (pnwrite)
*pnwrite = 0;
return 0;
}
int
envelope_set_date (envelope_t envelope,
int (*_date) __P ((envelope_t, char *, size_t , size_t *)),
void *owner)
{
if (envelope == NULL)
return EINVAL;
if (envelope->owner != owner)
return EACCES;
envelope->_date = _date;
return 0;
}
int
envelope_date (envelope_t envelope, char *buf, size_t len, size_t *pnwrite)
{
if (envelope == NULL)
return EINVAL;
if (envelope->_date)
return envelope->_date (envelope, buf, len, pnwrite);
if (buf && len)
*buf = '\0';
if (pnwrite)
*pnwrite = 0;
return 0;
}