path: root/mail/importers/evolution-mbox-importer.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* evolution-mbox-importer.c
 *
 * Authors: Iain Holmes <iain@ximian.com>
 *
 * Copyright (C) 2001  Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

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

#include <bonobo/bonobo-object.h>
#include <bonobo/bonobo-generic-factory.h>

#include <stdio.h>

#include <importer/evolution-importer.h>
#include <importer/GNOME_Evolution_Importer.h>

#include "mail-importer.h"

#include <camel/camel-exception.h>
#include <camel/camel-mime-parser.h>
#include <camel/camel-mime-part.h>

#define MBOX_FACTORY_IID "OAFIID:GNOME_Evolution_Mail_Mbox_ImporterFactory"

typedef struct {
    MailImporter importer; /* Parent */

    char *filename;
    int num;
    CamelMimeParser *mp;
} MboxImporter;


/* EvolutionImporter methods */

static void
process_item_fn (EvolutionImporter *eimporter,
         CORBA_Object listener,
         void *closure,
         CORBA_Environment *ev)
{
    MboxImporter *mbi = (MboxImporter *) closure;
    MailImporter *importer = (MailImporter *) mbi;
    gboolean done = FALSE;
    CamelException *ex;

    ex = camel_exception_new ();
    if (camel_mime_parser_step (mbi->mp, 0, 0) == HSCAN_FROM) {
        /* Import the next message */
        CamelMimeMessage *msg;
        CamelMessageInfo *info;

        msg = camel_mime_message_new ();
        if (camel_mime_part_construct_from_parser (CAMEL_MIME_PART (msg),
                               mbi->mp) == -1) {
            g_warning ("Failed message %d", mbi->num);
            camel_object_unref (CAMEL_OBJECT (msg));
            done = TRUE;
        }

        /* write the mesg */
        info = g_new0 (CamelMessageInfo, 1);
        camel_folder_append_message (importer->folder, msg, info, ex);
        g_free (info);
        camel_object_unref (CAMEL_OBJECT (msg));
        if (camel_exception_is_set (ex)) {
            g_warning ("Failed message %d", mbi->num);
            done = TRUE;
        }
    } else {
        /* all messages have now been imported */
        camel_folder_sync (importer->folder, FALSE, ex);
        camel_folder_thaw (importer->folder);
        importer->frozen = FALSE;
        done = TRUE;
    }

    camel_exception_free (ex);
    GNOME_Evolution_ImporterListener_notifyResult (listener,
                               GNOME_Evolution_ImporterListener_OK,
                               !done, ev);
    return;
}

static gboolean
support_format_fn (EvolutionImporter *importer,
           const char *filename,
           void *closure)
{
    char signature[6];
    gboolean ret = FALSE;
    int fd, n;

    fd = open (filename, O_RDONLY);
    if (fd == -1)
        return FALSE;

    n = read (fd, signature, 5);
    if (n > 0) {
        signature[n] = '\0';
        if (!g_strncasecmp (signature, "From ", 5))
            ret = TRUE;
    }

    close (fd);

    return ret; 
}

static void
importer_destroy_cb (GtkObject *object,
             MboxImporter *mbi)
{
    MailImporter *importer;

    importer = (MailImporter *) mbi;
    if (importer->frozen) {
        camel_folder_sync (importer->folder, FALSE, NULL);
        camel_folder_thaw (importer->folder);
    }

    if (importer->folder)
        camel_object_unref (CAMEL_OBJECT (importer->folder));

    g_free (mbi->filename);
    if (mbi->mp)
        camel_object_unref (CAMEL_OBJECT (mbi->mp));

    g_free (mbi);
}

static gboolean
load_file_fn (EvolutionImporter *eimporter,
          const char *filename,
          void *closure)
{
    MboxImporter *mbi;
    MailImporter *importer;
    int fd;

    mbi = (MboxImporter *) closure;
    importer = (MailImporter *) mbi;

    mbi->filename = g_strdup (filename);

    fd = open (filename, O_RDONLY);
    if (fd == -1) {
        g_warning ("Cannot open file");
        return FALSE;
    }

    mbi->mp = camel_mime_parser_new ();
    camel_mime_parser_scan_from (mbi->mp, TRUE);
    if (camel_mime_parser_init_with_fd (mbi->mp, fd) == -1) {
        g_warning ("Unable to process spool folder");
        goto fail;
    }

    importer->mstream = NULL;
    importer->folder = mail_tool_get_local_inbox (NULL);

    if (importer->folder == NULL){
        g_print ("Bad folder\n");
        goto fail;
    }

    camel_folder_freeze (importer->folder);
    importer->frozen = TRUE;

    g_warning ("Okay, so everything is now ready to import that mbox file!");
    return TRUE;

 fail:
    camel_object_unref (CAMEL_OBJECT (mbi->mp));
    mbi->mp = NULL;

    return FALSE;
}

static BonoboObject *
mbox_factory_fn (BonoboGenericFactory *_factory,
         void *closure)
{
    EvolutionImporter *importer;
    MboxImporter *mbox;
    
    mbox = g_new0 (MboxImporter, 1);
    importer = evolution_importer_new (support_format_fn, load_file_fn,
                       process_item_fn, NULL, mbox);
    gtk_signal_connect (GTK_OBJECT (importer), "destroy",
                GTK_SIGNAL_FUNC (importer_destroy_cb), mbox);
    
    return BONOBO_OBJECT (importer);
}

/* Entry point */
void
mail_importer_module_init (void)
{
    static gboolean initialised = FALSE;
    BonoboGenericFactory *factory;
    
    if (initialised == TRUE)
        return;

    factory = bonobo_generic_factory_new (MBOX_FACTORY_IID, 
                          mbox_factory_fn, NULL);

    if (factory == NULL)
        g_warning ("Could not initialise Outlook importer factory.");

    initialised = TRUE;
}