path: root/em-format/e-mail-parser-multipart-mixed.c

/*
 * e-mail-parser-multipart-mixed.c
 *
 * This program 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 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-mail-format-extensions.h"

#include <em-format/e-mail-parser-extension.h>
#include <em-format/e-mail-parser.h>
#include <e-util/e-util.h>
#include <em-format/e-mail-part-utils.h>

#include <camel/camel.h>

#include <string.h>

typedef struct _EMailParserMultipartMixed {
    GObject parent;
} EMailParserMultipartMixed;

typedef struct _EMailParserMultipartMixedClass {
    GObjectClass parent_class;
} EMailParserMultipartMixedClass;

static void e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface);
static void e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface);

G_DEFINE_TYPE_EXTENDED (
    EMailParserMultipartMixed,
    e_mail_parser_multipart_mixed,
    G_TYPE_OBJECT,
    0,
    G_IMPLEMENT_INTERFACE (
        E_TYPE_MAIL_EXTENSION,
        e_mail_parser_mail_extension_interface_init)
    G_IMPLEMENT_INTERFACE (
        E_TYPE_MAIL_PARSER_EXTENSION,
        e_mail_parser_parser_extension_interface_init));

static const gchar * parser_mime_types[] = { "multipart/mixed",
                        "multipart/report",
                        "multipart/*",
                        NULL };

static GSList *
empe_mp_mixed_parse (EMailParserExtension *extension,
                     EMailParser *parser,
                     CamelMimePart *part,
                     GString *part_id,
                     GCancellable *cancellable)
{
    CamelMultipart *mp;
    gint i, nparts, len;
    GSList *parts;

    if (g_cancellable_is_cancelled (cancellable))
        return NULL;

    mp = (CamelMultipart *) camel_medium_get_content ((CamelMedium *) part);

    if (!CAMEL_IS_MULTIPART (mp)) {
        parts = e_mail_parser_parse_part_as (
                parser, part, part_id,
                "application/vnd.evolution.source", cancellable);
        return parts;
    }

    len = part_id->len;
    parts = NULL;
    nparts = camel_multipart_get_number (mp);
    for (i = 0; i < nparts; i++) {
        CamelMimePart *subpart;
        CamelContentType *ct;
        GSList *new_parts;

        subpart = camel_multipart_get_part (mp, i);

        g_string_append_printf (part_id, ".mixed.%d", i);

        new_parts = e_mail_parser_parse_part (
                parser, subpart, part_id, cancellable);

        ct = camel_mime_part_get_content_type (subpart);

        /* Display parts with CID as attachments (unless they already are
         * attachments) */
        if (new_parts && new_parts->data &&
            (E_MAIL_PART (new_parts->data)->cid != NULL) &&
            !E_MAIL_PART (new_parts->data)->is_attachment) {

            parts = g_slist_concat (parts,
                    e_mail_parser_wrap_as_attachment (
                        parser, subpart, new_parts,
                        part_id, cancellable));

            /* Force messages to be expandable */
        } else if (!new_parts ||
            (camel_content_type_is (ct, "message", "rfc822") &&
             new_parts && new_parts->data &&
             !E_MAIL_PART (new_parts->data)->is_attachment)) {

            parts = g_slist_concat (parts,
                    e_mail_parser_wrap_as_attachment (
                        parser, subpart, new_parts,
                        part_id, cancellable));
            if (parts && parts->data)
                E_MAIL_PART (parts->data)->force_inline = TRUE;
        } else {
            parts = g_slist_concat (parts, new_parts);
        }

        g_string_truncate (part_id, len);
    }

    return parts;
}

static guint32
empe_mp_mixed_get_flags (EMailParserExtension *extension)
{
    return E_MAIL_PARSER_EXTENSION_COMPOUND_TYPE;
}

static const gchar **
empe_mp_mixed_mime_types (EMailExtension *extension)
{
    return parser_mime_types;
}

static void
e_mail_parser_multipart_mixed_class_init (EMailParserMultipartMixedClass *class)
{
}

static void
e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface)
{
    iface->parse = empe_mp_mixed_parse;
    iface->get_flags = empe_mp_mixed_get_flags;
}

static void
e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface)
{
    iface->mime_types = empe_mp_mixed_mime_types;
}

static void
e_mail_parser_multipart_mixed_init (EMailParserMultipartMixed *parser)
{

}