evolution/mail/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 "evolution-mbox-importer.h"

#include <stdio.h>

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

#include "mail-importer.h"
#include "mail-tools.h"

#include <camel/camel.h>

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;
		}
		
		if (!done) {
			mbi->num++;
			
			/* skip over the FROM_END state */
			camel_mime_parser_step (mbi->mp, 0, 0);
		}
	} 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) {
		CamelException *ex;
		
		ex = camel_exception_new ();
		camel_folder_sync (importer->folder, FALSE, ex);
		camel_exception_free (ex);
		
		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;
}

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);
}