gecko-dev/lib/libmime/mimeeobj.c
1998-03-28 02:44:41 +00:00

266 lines
7.2 KiB
C

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/* mimeeobj.c --- definition of the MimeExternalObject class (see mimei.h)
Created: Jamie Zawinski <jwz@netscape.com>, 15-May-96.
*/
#include "mimeeobj.h"
#include "xpgetstr.h"
#define MIME_SUPERCLASS mimeLeafClass
MimeDefClass(MimeExternalObject, MimeExternalObjectClass,
mimeExternalObjectClass, &MIME_SUPERCLASS);
extern int MK_MSG_ATTACHMENT;
#if defined(XP_MAC) && !defined(MOZILLA_30)
extern MimeObjectClass mimeMultipartAppleDoubleClass;
#endif
static int MimeExternalObject_initialize (MimeObject *);
static void MimeExternalObject_finalize (MimeObject *);
static int MimeExternalObject_parse_begin (MimeObject *);
static int MimeExternalObject_parse_buffer (char *, int32, MimeObject *);
static int MimeExternalObject_parse_line (char *, int32, MimeObject *);
static int MimeExternalObject_parse_decoded_buffer (char*, int32, MimeObject*);
static XP_Bool MimeExternalObject_displayable_inline_p (MimeObjectClass *class,
MimeHeaders *hdrs);
static int
MimeExternalObjectClassInitialize(MimeExternalObjectClass *class)
{
MimeObjectClass *oclass = (MimeObjectClass *) class;
MimeLeafClass *lclass = (MimeLeafClass *) class;
XP_ASSERT(!oclass->class_initialized);
oclass->initialize = MimeExternalObject_initialize;
oclass->finalize = MimeExternalObject_finalize;
oclass->parse_begin = MimeExternalObject_parse_begin;
oclass->parse_buffer = MimeExternalObject_parse_buffer;
oclass->parse_line = MimeExternalObject_parse_line;
oclass->displayable_inline_p = MimeExternalObject_displayable_inline_p;
lclass->parse_decoded_buffer = MimeExternalObject_parse_decoded_buffer;
return 0;
}
static int
MimeExternalObject_initialize (MimeObject *object)
{
return ((MimeObjectClass*)&MIME_SUPERCLASS)->initialize(object);
}
static void
MimeExternalObject_finalize (MimeObject *object)
{
((MimeObjectClass*)&MIME_SUPERCLASS)->finalize(object);
}
static int
MimeExternalObject_parse_begin (MimeObject *obj)
{
int status;
status = ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_begin(obj);
if (status < 0) return status;
#if defined (XP_MAC) && !defined(MOZILLA_30)
if (obj->parent && mime_typep(obj->parent,
(MimeObjectClass *) &mimeMultipartAppleDoubleClass))
goto done;
#endif /* defined (XP_MAC) && !defined(MOZILLA_30) */
/* If we're writing this object, and we're doing it in raw form, then
now is the time to inform the backend what the type of this data is.
*/
if (obj->output_p &&
obj->options &&
!obj->options->write_html_p &&
!obj->options->state->first_data_written_p)
{
status = MimeObject_output_init(obj, 0);
if (status < 0) return status;
XP_ASSERT(obj->options->state->first_data_written_p);
}
/* If we're writing this object as HTML, do all the work now -- just write
out a table with a link in it. (Later calls to the `parse_buffer' method
will simply discard the data of the object itself.)
*/
if (obj->options &&
obj->output_p &&
obj->options->write_html_p &&
obj->options->output_fn)
{
MimeDisplayOptions newopt = *obj->options; /* copy it */
char *id = 0;
char *id_url = 0;
char *id_name = 0;
XP_Bool all_headers_p = obj->options->headers == MimeHeadersAll;
id = mime_part_address (obj);
if (! id) return MK_OUT_OF_MEMORY;
if (obj->options && obj->options->url)
{
const char *url = obj->options->url;
id_url = mime_set_url_part(url, id, TRUE);
if (!id_url)
{
XP_FREE(id);
return MK_OUT_OF_MEMORY;
}
}
if (!XP_STRCMP (id, "0"))
{
XP_FREE(id);
id = XP_STRDUP(XP_GetString(MK_MSG_ATTACHMENT));
}
else
{
const char *p = "Part "; /* #### i18n */
char *s = (char *)XP_ALLOC(XP_STRLEN(p) + XP_STRLEN(id) + 1);
if (!s)
{
XP_FREE(id);
XP_FREE(id_url);
return MK_OUT_OF_MEMORY;
}
/* we have a valid id */
if (id)
id_name = mime_find_suggested_name_of_part(id, obj);
XP_STRCPY(s, p);
XP_STRCAT(s, id);
XP_FREE(id);
id = s;
}
if (all_headers_p &&
/* Don't bother showing all headers on this part if it's the only
part in the message: in that case, we've already shown these
headers. */
obj->options->state &&
obj->options->state->root == obj->parent)
all_headers_p = FALSE;
newopt.fancy_headers_p = TRUE;
newopt.headers = (all_headers_p ? MimeHeadersAll : MimeHeadersSome);
{
char p[] = "<P>";
status = MimeObject_write(obj, p, 3, FALSE);
if (status < 0) goto FAIL;
}
status = MimeHeaders_write_attachment_box (obj->headers, &newopt,
obj->content_type,
obj->encoding,
id_name? id_name : id, id_url, 0);
FREEIF(id_name);
if (status < 0) goto FAIL;
{
char p[] = "<P>";
status = MimeObject_write(obj, p, 3, FALSE);
if (status < 0) goto FAIL;
}
FAIL:
FREEIF(id);
FREEIF(id_url);
FREEIF(id_name);
if (status < 0) return status;
}
#if defined (XP_MAC) && !defined(MOZILLA_30)
done:
#endif /* defined (XP_MAC) && !defined(MOZILLA_30) */
return 0;
}
static int
MimeExternalObject_parse_buffer (char *buffer, int32 size, MimeObject *obj)
{
XP_ASSERT(!obj->closed_p);
if (obj->closed_p) return -1;
if (obj->output_p &&
obj->options &&
!obj->options->write_html_p)
{
/* The data will be base64-decoded and passed to
MimeExternalObject_parse_decoded_buffer. */
return ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_buffer(buffer, size,
obj);
}
else
{
/* Otherwise, simply ignore the data. */
return 0;
}
}
static int
MimeExternalObject_parse_decoded_buffer (char *buf, int32 size,
MimeObject *obj)
{
/* This is called (by MimeLeafClass->parse_buffer) with blocks of data
that have already been base64-decoded. This will only be called in
the case where we're not emitting HTML, and want access to the raw
data itself.
We override the `parse_decoded_buffer' method provided by MimeLeaf
because, unlike most children of MimeLeaf, we do not want to line-
buffer the decoded data -- we want to simply pass it along to the
backend, without going through our `parse_line' method.
*/
if (!obj->output_p ||
!obj->options ||
obj->options->write_html_p)
{
XP_ASSERT(0);
return -1;
}
return MimeObject_write(obj, buf, size, TRUE);
}
static int
MimeExternalObject_parse_line (char *line, int32 length, MimeObject *obj)
{
/* This method should never be called (externals do no line buffering).
*/
XP_ASSERT(0);
return -1;
}
static XP_Bool
MimeExternalObject_displayable_inline_p (MimeObjectClass *class,
MimeHeaders *hdrs)
{
return FALSE;
}