/*
* Copyright (C) 2000 Helix Code Inc.
*
* Authors: Michael Zucchi <notzed@helixcode.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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 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.
*/
#include "camel-mime-filter-basic.h"
#include "camel-mime-utils.h"
static void camel_mime_filter_basic_class_init (CamelMimeFilterBasicClass *klass);
static void camel_mime_filter_basic_init (CamelMimeFilterBasic *obj);
static CamelMimeFilterClass *camel_mime_filter_basic_parent;
enum SIGNALS {
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
guint
camel_mime_filter_basic_get_type (void)
{
static guint type = 0;
if (!type) {
GtkTypeInfo type_info = {
"CamelMimeFilterBasic",
sizeof (CamelMimeFilterBasic),
sizeof (CamelMimeFilterBasicClass),
(GtkClassInitFunc) camel_mime_filter_basic_class_init,
(GtkObjectInitFunc) camel_mime_filter_basic_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL
};
type = gtk_type_unique (camel_mime_filter_get_type (), &type_info);
}
return type;
}
static void
finalise(GtkObject *o)
{
((GtkObjectClass *)camel_mime_filter_basic_parent)->finalize (o);
}
/* should this 'flush' outstanding state/data bytes? */
static void
reset(CamelMimeFilter *mf)
{
CamelMimeFilterBasic *f = (CamelMimeFilterBasic *)mf;
f->state = 0;
f->save = 0;
}
static void
complete(CamelMimeFilter *mf, char *in, size_t len, size_t prespace, char **out, size_t *outlen, size_t *outprespace)
{
CamelMimeFilterBasic *f = (CamelMimeFilterBasic *)mf;
int newlen;
switch(f->type) {
case CAMEL_MIME_FILTER_BASIC_BASE64_ENC:
/* wont go to more than 2x size (overly conservative) */
camel_mime_filter_set_size(mf, len*2, FALSE);
newlen = base64_encode_close(in, len, mf->outbuf, &f->state, &f->save);
break;
case CAMEL_MIME_FILTER_BASIC_QP_ENC:
/* FIXME: *3 is probably not quite enough ... */
camel_mime_filter_set_size(mf, len*3, FALSE);
newlen = quoted_encode_close(in, len, mf->outbuf, &f->state, &f->save);
break;
case CAMEL_MIME_FILTER_BASIC_BASE64_DEC:
/* output can't possibly exceed the input size */
camel_mime_filter_set_size(mf, len, FALSE);
newlen = base64_decode_step(in, len, mf->outbuf, &f->state, &f->save);
break;
case CAMEL_MIME_FILTER_BASIC_QP_DEC:
/* output can't possibly exceed the input size */
camel_mime_filter_set_size(mf, len, FALSE);
newlen = quoted_decode_step(in, len, mf->outbuf, &f->state, &f->save);
break;
default:
g_warning("unknown type %d in CamelMimeFilterBasic", f->type);
goto donothing;
}
*out = mf->outbuf;
*outlen = newlen;
*outprespace = mf->outpre;
return;
donothing:
*out = in;
*outlen = len;
*outprespace = prespace;
}
/* here we do all of the basic mime filtering */
static void
filter(CamelMimeFilter *mf, char *in, size_t len, size_t prespace, char **out, size_t *outlen, size_t *outprespace)
{
CamelMimeFilterBasic *f = (CamelMimeFilterBasic *)mf;
int newlen;
switch(f->type) {
case CAMEL_MIME_FILTER_BASIC_BASE64_ENC:
/* wont go to more than 2x size (overly conservative) */
camel_mime_filter_set_size(mf, len*2, FALSE);
newlen = base64_encode_step(in, len, mf->outbuf, &f->state, &f->save);
break;
case CAMEL_MIME_FILTER_BASIC_QP_ENC:
/* FIXME: *3 is probably not quite enough ... */
camel_mime_filter_set_size(mf, len*3, FALSE);
newlen = quoted_encode_step(in, len, mf->outbuf, &f->state, &f->save);
break;
case CAMEL_MIME_FILTER_BASIC_BASE64_DEC:
/* output can't possibly exceed the input size */
camel_mime_filter_set_size(mf, len, FALSE);
newlen = base64_decode_step(in, len, mf->outbuf, &f->state, &f->save);
break;
case CAMEL_MIME_FILTER_BASIC_QP_DEC:
/* output can't possibly exceed the input size */
camel_mime_filter_set_size(mf, len, FALSE);
newlen = quoted_decode_step(in, len, mf->outbuf, &f->state, &f->save);
break;
default:
g_warning("unknown type %d in CamelMimeFilterBasic", f->type);
goto donothing;
}
*out = mf->outbuf;
*outlen = newlen;
*outprespace = mf->outpre;
return;
donothing:
*out = in;
*outlen = len;
*outprespace = prespace;
}
static void
camel_mime_filter_basic_class_init (CamelMimeFilterBasicClass *klass)
{
GtkObjectClass *object_class = (GtkObjectClass *) klass;
CamelMimeFilterClass *filter_class = (CamelMimeFilterClass *) klass;
camel_mime_filter_basic_parent = gtk_type_class (camel_mime_filter_get_type ());
object_class->finalize = finalise;
filter_class->reset = reset;
filter_class->filter = filter;
filter_class->complete = complete;
gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
}
static void
camel_mime_filter_basic_init (CamelMimeFilterBasic *obj)
{
obj->state = 0;
obj->save = 0;
}
/**
* camel_mime_filter_basic_new:
*
* Create a new CamelMimeFilterBasic object.
*
* Return value: A new CamelMimeFilterBasic widget.
**/
CamelMimeFilterBasic *
camel_mime_filter_basic_new (void)
{
CamelMimeFilterBasic *new = CAMEL_MIME_FILTER_BASIC ( gtk_type_new (camel_mime_filter_basic_get_type ()));
return new;
}
CamelMimeFilterBasic *
camel_mime_filter_basic_new_type(CamelMimeFilterBasicType type)
{
CamelMimeFilterBasic *new;
switch (type) {
case CAMEL_MIME_FILTER_BASIC_BASE64_ENC:
case CAMEL_MIME_FILTER_BASIC_QP_ENC:
case CAMEL_MIME_FILTER_BASIC_BASE64_DEC:
case CAMEL_MIME_FILTER_BASIC_QP_DEC:
new = camel_mime_filter_basic_new();
new->type = type;
break;
default:
g_warning("Invalid type of CamelMimeFilterBasic requested: %d", type);
new = NULL;
break;
}
return new;
}
