envelope.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999-2000, 2004-2005, 2007, 2010-2012 Free Software
Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library. If not, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <mailutils/errno.h>
#include <mailutils/util.h>
#include <mailutils/sys/envelope.h>
int
mu_envelope_create (mu_envelope_t *penvelope, void *owner)
{
mu_envelope_t envelope;
if (penvelope == NULL)
return MU_ERR_OUT_PTR_NULL;
envelope = calloc (1, sizeof (*envelope));
if (envelope == NULL)
return ENOMEM;
envelope->owner = owner;
*penvelope = envelope;
return 0;
}
void
mu_envelope_destroy (mu_envelope_t *penvelope, void *owner)
{
if (penvelope && *penvelope)
{
mu_envelope_t envelope = *penvelope;
if (envelope->owner == owner)
{
if (envelope->_destroy)
envelope->_destroy (envelope);
free (envelope->date);
free (envelope->sender);
free (envelope);
}
*penvelope = NULL;
}
}
void *
mu_envelope_get_owner (mu_envelope_t envelope)
{
return (envelope) ? envelope->owner : NULL;
}
int
mu_envelope_set_sender (mu_envelope_t envelope,
int (*_sender) (mu_envelope_t, char *, size_t,
size_t*),
void *owner)
{
if (envelope == NULL)
return EINVAL;
if (envelope->owner != owner)
return EACCES;
envelope->_get_sender = _sender;
return 0;
}
int
mu_envelope_set_date (mu_envelope_t envelope,
int (*_date) (mu_envelope_t, char *, size_t , size_t *),
void *owner)
{
if (envelope == NULL)
return EINVAL;
if (envelope->owner != owner)
return EACCES;
envelope->_get_date = _date;
return 0;
}
int
mu_envelope_set_destroy (mu_envelope_t envelope,
int (*_destroy) (mu_envelope_t),
void *owner)
{
if (envelope == NULL)
return EINVAL;
if (envelope->owner != owner)
return EACCES;
envelope->_destroy = _destroy;
return 0;
}
/* General accessors: */
#define AC2(a,b) a ## b
#define AC4(a,b,c,d) a ## b ## c ## d
#define ACCESSOR(action,field) AC4(mu_envelope_,action,_,field)
#define DECL_SGET(field) \
int \
ACCESSOR(sget,field) (mu_envelope_t env, char const **sptr) \
{ \
if (env == NULL) \
return EINVAL; \
if (!env->field) \
{ \
if (env->AC2(_get_,field)) \
{ \
size_t n; \
char *buf; \
int status; \
\
status = env->AC2(_get_,field) (env, NULL, 0, &n); \
if (status) \
return status; \
\
buf = malloc (n + 1); \
if (!buf) \
return ENOMEM; \
\
status = env->AC2(_get_,field) (env, buf, n + 1, NULL); \
if (status) \
return status; \
\
env->field = buf; \
} \
else \
return MU_ERR_NOENT; \
} \
*sptr = env->field; \
return 0; \
}
#define DECL_GET(field) \
int \
ACCESSOR(get,field) (mu_envelope_t env, char *buf, size_t len, size_t *n) \
{ \
size_t i; \
const char *str; \
int status = ACCESSOR(sget, field) (env, &str); \
\
if (status) \
return status; \
\
i = mu_cpystr (buf, str, len); \
if (n) \
*n = i; \
return 0; \
}
#define DECL_AGET(field) \
int \
ACCESSOR(aget, field) (mu_envelope_t env, char **buf) \
{ \
const char *str; \
int status = ACCESSOR(sget, field) (env, &str); \
\
if (status) \
return status; \
\
if (str) \
{ \
*buf = strdup (str); \
if (!*buf) \
status = ENOMEM; \
} \
else \
*buf = NULL; \
return status; \
}
#define DECL_ACCESSORS(field) \
DECL_SGET(field) \
DECL_GET(field) \
DECL_AGET(field)
DECL_ACCESSORS(sender)
DECL_ACCESSORS(date)