Initial cut at mh provider. Well, it already does everything

mbox does.

2000-08-01  Not Zed  <NotZed@HelixCode.com>

        * providers/mh: New mh provider implementation.

        * providers/Makefile.am (SUBDIRS): Added mh provider.

svn path=/trunk/; revision=4444

11 files changed, 1225 insertions, 1 deletions

diff --git a/camel/ChangeLog b/camel/ChangeLog
index ee2cd43dd5..1f07de6188 100644
--- a/camel/ChangeLog
+++ b/camel/ChangeLog
@@ -1,3 +1,9 @@
+2000-08-01  Not Zed  <NotZed@HelixCode.com>
+
+	* providers/mh: New mh provider implementation.
+
+	* providers/Makefile.am (SUBDIRS): Added mh provider.
+
 2000-07-31  Jeffrey Stedfast  <fejj@helixcode.com>
 
 	* providers/imap/camel-imap-folder.c (imap_get_message_info_internal): 
diff --git a/camel/providers/Makefile.am b/camel/providers/Makefile.am
index dec31c0cb9..021fe4539b 100644
--- a/camel/providers/Makefile.am
+++ b/camel/providers/Makefile.am
@@ -1,6 +1,6 @@
 ## Process this file with automake to produce Makefile.in
 
-SUBDIRS = mbox pop3 sendmail smtp vee imap
+SUBDIRS = mbox pop3 sendmail smtp vee imap mh
 
 # these ones are disabled for the moment.
 # MH maildir nntp smtp
diff --git a/camel/providers/mh/Makefile.am b/camel/providers/mh/Makefile.am
new file mode 100644
index 0000000000..62f447171b
--- /dev/null
+++ b/camel/providers/mh/Makefile.am
@@ -0,0 +1,39 @@
+## Process this file with automake to produce Makefile.in
+
+libcamelmhincludedir = $(includedir)/camel
+
+
+providerdir = $(pkglibdir)/camel-providers/$(VERSION)
+
+provider_LTLIBRARIES = libcamelmh.la
+provider_DATA = libcamelmh.urls
+
+INCLUDES = -I.. \
+	-I$(srcdir)/..				\
+	-I$(top_srcdir)/camel			\
+	-I$(top_srcdir)/intl			\
+	-I$(top_srcdir)/libibex			\
+	-I$(top_srcdir)/e-util			\
+	-I$(top_srcdir)				\
+	-I$(includedir)				\
+	$(GTK_INCLUDEDIR)			\
+	-DG_LOG_DOMAIN=\"camel-mh-provider\"	
+
+libcamelmh_la_SOURCES = 			\
+	camel-mh-folder.c			\
+	camel-mh-provider.c			\
+	camel-mh-store.c			\
+	camel-mh-summary.c
+
+libcamelmhinclude_HEADERS =			\
+	camel-mh-folder.h			\
+	camel-mh-store.h			\
+	camel-mh-summary.h
+
+libcamelmh_la_LDFLAGS = -version-info 0:0:0
+
+libcamelmh_la_LIBADD = $(top_builddir)/e-util/libeutil.la $(top_builddir)/libibex/libibex.la $(UNICODE_LIBS)
+#libcamelmh_la_LIBADD = $(top_builddir)/libibex/libibex.la $(UNICODE_LIBS)
+
+EXTRA_DIST = libcamelmh.urls
+
diff --git a/camel/providers/mh/camel-mh-folder.c b/camel/providers/mh/camel-mh-folder.c
new file mode 100644
index 0000000000..1961c62dd9
--- /dev/null
+++ b/camel/providers/mh/camel-mh-folder.c
@@ -0,0 +1,483 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; fill-column: 160 -*- */
+/* camel-mh-folder.c : Abstract class for an email folder */
+
+/* 
+ * Authors: Michael Zucchi <notzed@helixcode.com>
+ *
+ * Copyright (C) 1999, 2000 Helix Code 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
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include "camel-mh-folder.h"
+#include "camel-mh-store.h"
+#include "string-utils.h"
+#include "camel-stream-fs.h"
+#include "camel-mh-summary.h"
+#include "camel-data-wrapper.h"
+#include "camel-mime-message.h"
+#include "camel-stream-filter.h"
+#include "camel-mime-filter-from.h"
+#include "camel-exception.h"
+
+#define d(x)
+
+static CamelFolderClass *parent_class = NULL;
+
+/* Returns the class for a CamelMhFolder */
+#define CMHF_CLASS(so) CAMEL_MH_FOLDER_CLASS (GTK_OBJECT(so)->klass)
+#define CF_CLASS(so) CAMEL_FOLDER_CLASS (GTK_OBJECT(so)->klass)
+#define CMHS_CLASS(so) CAMEL_STORE_CLASS (GTK_OBJECT(so)->klass)
+
+static void mh_init(CamelFolder * folder, CamelStore * parent_store,
+		      CamelFolder * parent_folder, const gchar * name,
+		      gchar * separator, gboolean path_begins_with_sep, CamelException * ex);
+
+static void mh_sync(CamelFolder * folder, gboolean expunge, CamelException * ex);
+static gint mh_get_message_count(CamelFolder * folder);
+static gint mh_get_unread_message_count(CamelFolder * folder);
+static void mh_append_message(CamelFolder * folder, CamelMimeMessage * message, guint32 flags, CamelException * ex);
+static GPtrArray *mh_get_uids(CamelFolder * folder);
+static GPtrArray *mh_get_subfolder_names(CamelFolder * folder);
+static GPtrArray *mh_get_summary(CamelFolder * folder);
+static CamelMimeMessage *mh_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex);
+
+static void mh_expunge(CamelFolder * folder, CamelException * ex);
+
+static const CamelMessageInfo *mh_get_message_info(CamelFolder * folder, const char *uid);
+
+static GPtrArray *mh_search_by_expression(CamelFolder * folder, const char *expression, CamelException * ex);
+
+static guint32 mh_get_message_flags(CamelFolder * folder, const char *uid);
+static void mh_set_message_flags(CamelFolder * folder, const char *uid, guint32 flags, guint32 set);
+static gboolean mh_get_message_user_flag(CamelFolder * folder, const char *uid, const char *name);
+static void mh_set_message_user_flag(CamelFolder * folder, const char *uid, const char *name, gboolean value);
+
+static void mh_finalize(GtkObject * object);
+
+static void camel_mh_folder_class_init(CamelMhFolderClass * camel_mh_folder_class)
+{
+	CamelFolderClass *camel_folder_class = CAMEL_FOLDER_CLASS(camel_mh_folder_class);
+	GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS(camel_folder_class);
+
+	parent_class = gtk_type_class(camel_folder_get_type());
+
+	/* virtual method definition */
+
+	/* virtual method overload */
+	camel_folder_class->init = mh_init;
+	camel_folder_class->sync = mh_sync;
+	camel_folder_class->get_message_count = mh_get_message_count;
+	camel_folder_class->get_unread_message_count = mh_get_unread_message_count;
+	camel_folder_class->append_message = mh_append_message;
+	camel_folder_class->get_uids = mh_get_uids;
+	camel_folder_class->free_uids = camel_folder_free_deep;
+	camel_folder_class->get_subfolder_names = mh_get_subfolder_names;
+	camel_folder_class->free_subfolder_names = camel_folder_free_deep;
+	camel_folder_class->get_summary = mh_get_summary;
+	camel_folder_class->free_summary = camel_folder_free_nop;
+	camel_folder_class->expunge = mh_expunge;
+
+	camel_folder_class->get_message = mh_get_message;
+
+	camel_folder_class->search_by_expression = mh_search_by_expression;
+
+	camel_folder_class->get_message_info = mh_get_message_info;
+
+	camel_folder_class->get_message_flags = mh_get_message_flags;
+	camel_folder_class->set_message_flags = mh_set_message_flags;
+	camel_folder_class->get_message_user_flag = mh_get_message_user_flag;
+	camel_folder_class->set_message_user_flag = mh_set_message_user_flag;
+
+	gtk_object_class->finalize = mh_finalize;
+}
+
+static void mh_finalize(GtkObject * object)
+{
+	CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(object);
+
+	g_free(mh_folder->folder_file_path);
+	g_free(mh_folder->summary_file_path);
+	g_free(mh_folder->folder_dir_path);
+	g_free(mh_folder->index_file_path);
+
+	GTK_OBJECT_CLASS(parent_class)->finalize(object);
+}
+
+GtkType camel_mh_folder_get_type(void)
+{
+	static GtkType camel_mh_folder_type = 0;
+
+	if (!camel_mh_folder_type) {
+		GtkTypeInfo camel_mh_folder_info = {
+			"CamelMhFolder",
+			sizeof(CamelMhFolder),
+			sizeof(CamelMhFolderClass),
+			(GtkClassInitFunc) camel_mh_folder_class_init,
+			(GtkObjectInitFunc) NULL,
+			/* reserved_1 */ NULL,
+			/* reserved_2 */ NULL,
+			(GtkClassInitFunc) NULL,
+		};
+
+		camel_mh_folder_type = gtk_type_unique(CAMEL_FOLDER_TYPE, &camel_mh_folder_info);
+	}
+
+	return camel_mh_folder_type;
+}
+
+static void
+mh_init(CamelFolder * folder, CamelStore * parent_store,
+	  CamelFolder * parent_folder, const gchar * name, gchar * separator,
+	  gboolean path_begins_with_sep, CamelException * ex)
+{
+	CamelMhFolder *mh_folder = (CamelMhFolder *) folder;
+	const gchar *root_dir_path;
+	gchar *real_name;
+	int forceindex;
+	struct stat st;
+
+	/* call parent method */
+	parent_class->init(folder, parent_store, parent_folder, name, separator, path_begins_with_sep, ex);
+	if (camel_exception_get_id(ex))
+		return;
+
+	/* we assume that the parent init method checks for the existance of @folder */
+	folder->can_hold_messages = TRUE;
+	folder->can_hold_folders = TRUE;
+	folder->has_summary_capability = TRUE;
+	folder->has_search_capability = TRUE;
+
+	folder->permanent_flags = CAMEL_MESSAGE_ANSWERED |
+	    CAMEL_MESSAGE_DELETED |
+	    CAMEL_MESSAGE_DRAFT | CAMEL_MESSAGE_FLAGGED | CAMEL_MESSAGE_SEEN | CAMEL_MESSAGE_USER;
+
+	mh_folder->summary = NULL;
+	mh_folder->search = NULL;
+
+	/* now set the name info */
+	g_free(mh_folder->folder_file_path);
+	g_free(mh_folder->folder_dir_path);
+	g_free(mh_folder->index_file_path);
+
+	root_dir_path = camel_mh_store_get_toplevel_dir(CAMEL_MH_STORE(folder->parent_store));
+
+	real_name = g_basename(folder->full_name);
+	mh_folder->folder_file_path = g_strdup_printf("%s/%s", root_dir_path, real_name);
+	mh_folder->summary_file_path = g_strdup_printf("%s/%s/ev-summary", root_dir_path, real_name);
+	mh_folder->folder_dir_path = g_strdup_printf("%s/%s", root_dir_path, real_name);
+	mh_folder->index_file_path = g_strdup_printf("%s/%s/ev-index.ibex", root_dir_path, real_name);
+
+	/* if we have no index file, force it */
+	forceindex = stat(mh_folder->index_file_path, &st) == -1;
+
+	mh_folder->index = ibex_open(mh_folder->index_file_path, O_CREAT | O_RDWR, 0600);
+	if (mh_folder->index == NULL) {
+		/* yes, this isn't fatal at all */
+		g_warning("Could not open/create index file: %s: indexing not performed", strerror(errno));
+	}
+
+	/* no summary (disk or memory), and we're proverbially screwed */
+	mh_folder->summary = camel_mh_summary_new(mh_folder->summary_file_path,
+						  mh_folder->folder_file_path,
+						  mh_folder->index);
+
+	if (camel_mh_summary_load(mh_folder->summary, forceindex) == -1) {
+		camel_exception_set(ex, CAMEL_EXCEPTION_FOLDER_INVALID,	/* FIXME: right error code */
+				    "Could not load or create summary");
+		return;
+	}
+}
+
+static void mh_sync(CamelFolder * folder, gboolean expunge, CamelException * ex)
+{
+	CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(folder);
+
+	if (expunge)
+		mh_expunge(folder, ex);
+	else
+		camel_mh_summary_sync(mh_folder->summary, FALSE, ex);
+
+	/* save index */
+	if (mh_folder->index)
+		ibex_save(mh_folder->index);
+	if (mh_folder->summary)
+		camel_folder_summary_save(CAMEL_FOLDER_SUMMARY(mh_folder->summary));
+}
+
+static void mh_expunge(CamelFolder * folder, CamelException * ex)
+{
+	CamelMhFolder *mh = CAMEL_MH_FOLDER(folder);
+
+	camel_mh_summary_sync(mh->summary, TRUE, ex);
+
+	/* TODO: check it actually changed */
+	gtk_signal_emit_by_name(GTK_OBJECT(folder), "folder_changed", 0);
+}
+
+static gint mh_get_message_count(CamelFolder * folder)
+{
+	CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(folder);
+
+	g_return_val_if_fail(mh_folder->summary != NULL, -1);
+
+	return camel_folder_summary_count(CAMEL_FOLDER_SUMMARY(mh_folder->summary));
+}
+
+static gint mh_get_unread_message_count(CamelFolder * folder)
+{
+	CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(folder);
+	CamelMessageInfo *info;
+	GPtrArray *infolist;
+	gint i, count = 0;
+
+	g_return_val_if_fail(mh_folder->summary != NULL, -1);
+
+	infolist = mh_get_summary(folder);
+
+	for (i = 0; i < infolist->len; i++) {
+		info = (CamelMessageInfo *) g_ptr_array_index(infolist, i);
+		if (!(info->flags & CAMEL_MESSAGE_SEEN))
+			count++;
+	}
+
+	return count;
+}
+
+/* FIXME: this may need some tweaking for performance? */
+static void mh_append_message(CamelFolder * folder, CamelMimeMessage * message, guint32 flags, CamelException * ex)
+{
+	CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(folder);
+	CamelStream *output_stream = NULL;
+	char *name = NULL;
+	char *uid = NULL;
+
+	/* FIXME: probably needs additional locking */
+
+	/* keep trying uid's until we find one thats ok */
+	do {
+		g_free(uid);
+		g_free(name);
+		uid = camel_folder_summary_next_uid_string((CamelFolderSummary *)mh_folder->summary);
+		name = g_strdup_printf("%s/%s", mh_folder->folder_file_path, uid);
+		output_stream = camel_stream_fs_new_with_name(name, O_WRONLY|O_CREAT|O_EXCL, 0600);
+	} while (output_stream == NULL || errno != EEXIST);
+
+	if (output_stream == NULL)
+		goto fail;
+
+	/* write the message */
+	if (camel_data_wrapper_write_to_stream(CAMEL_DATA_WRAPPER(message), output_stream) == -1)
+		goto fail;
+
+	if (camel_stream_close(output_stream) == -1)
+		goto fail;
+
+	/* index/summarise the message.  Yes this re-reads it, its just simpler */
+	camel_mh_summary_add(mh_folder->summary, uid, TRUE);
+	gtk_signal_emit_by_name(GTK_OBJECT(folder), "folder_changed", 0);
+	g_free(name);
+	g_free(uid);
+	return;
+
+fail:
+	if (camel_exception_is_set(ex)) {
+		camel_exception_setv(ex, camel_exception_get_id(ex),
+				     "Cannot append message to mh file: %s", camel_exception_get_description(ex));
+	} else {
+		camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
+				     "Cannot append message to mh file: %s", g_strerror(errno));
+	}
+	if (output_stream)
+		gtk_object_unref(GTK_OBJECT(output_stream));
+	if (name) {
+		unlink(name);
+		g_free(name);
+	}
+	g_free(uid);
+}
+
+static GPtrArray *mh_get_uids(CamelFolder * folder)
+{
+	GPtrArray *array;
+	CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(folder);
+	int i, count;
+
+	count = camel_folder_summary_count(CAMEL_FOLDER_SUMMARY(mh_folder->summary));
+	array = g_ptr_array_new();
+	g_ptr_array_set_size(array, count);
+	for (i = 0; i < count; i++) {
+		CamelMessageInfo *info =
+			camel_folder_summary_index(CAMEL_FOLDER_SUMMARY(mh_folder->summary), i);
+
+		array->pdata[i] = g_strdup(info->uid);
+	}
+
+	return array;
+}
+
+static GPtrArray *mh_get_subfolder_names(CamelFolder * folder)
+{
+	/* FIXME: scan for sub-folders */
+	/* No subfolders. */
+	return g_ptr_array_new();
+}
+
+static CamelMimeMessage *mh_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex)
+{
+	CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(folder);
+	CamelStream *message_stream = NULL;
+	CamelMimeMessage *message = NULL;
+	CamelMessageInfo *info;
+	char *name;
+
+	name = g_strdup_printf("%s/%s", mh_folder->folder_file_path, uid);
+
+	/* get the message summary info */
+	info = camel_folder_summary_uid(CAMEL_FOLDER_SUMMARY(mh_folder->summary), uid);
+
+	if (info == NULL) {
+		errno = ENOENT;
+		goto fail;
+	}
+
+	message_stream = camel_stream_fs_new_with_name(name, O_RDONLY, 0);
+
+	/* where we read from */
+	if (message_stream == NULL)
+		goto fail;
+
+	message = camel_mime_message_new();
+	if (camel_data_wrapper_construct_from_stream(CAMEL_DATA_WRAPPER(message), message_stream) == -1) {
+		g_warning("Construction failed");
+		errno = EINVAL;
+		goto fail;
+	}
+	gtk_object_unref(GTK_OBJECT(message_stream));
+	g_free(name);
+
+	return message;
+
+fail:
+	camel_exception_setv(ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID, "Cannot get message: %s\n  %s",
+			     name, g_strerror(errno));
+
+	if (message_stream)
+		gtk_object_unref(GTK_OBJECT(message_stream));
+
+	if (message)
+		gtk_object_unref(GTK_OBJECT(message));
+
+	g_free(name);
+
+	return NULL;
+}
+
+GPtrArray *mh_get_summary(CamelFolder * folder)
+{
+	CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(folder);
+
+	return CAMEL_FOLDER_SUMMARY(mh_folder->summary)->messages;
+}
+
+/* get a single message info, by uid */
+static const CamelMessageInfo *mh_get_message_info(CamelFolder * folder, const char *uid)
+{
+	CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(folder);
+
+	return camel_folder_summary_uid(CAMEL_FOLDER_SUMMARY(mh_folder->summary), uid);
+}
+
+static GPtrArray *mh_search_by_expression(CamelFolder * folder, const char *expression, CamelException * ex)
+{
+	CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(folder);
+
+	if (mh_folder->search == NULL) {
+		mh_folder->search = camel_folder_search_new();
+	}
+
+	camel_folder_search_set_folder(mh_folder->search, folder);
+	if (mh_folder->summary) {
+		/* FIXME: dont access summary array directly? */
+		camel_folder_search_set_summary(mh_folder->search,
+						CAMEL_FOLDER_SUMMARY(mh_folder->summary)->messages);
+	}
+
+	camel_folder_search_set_body_index(mh_folder->search, mh_folder->index);
+
+	return camel_folder_search_execute_expression(mh_folder->search, expression, ex);
+}
+
+static guint32 mh_get_message_flags(CamelFolder * folder, const char *uid)
+{
+	CamelMessageInfo *info;
+	CamelMhFolder *mf = CAMEL_MH_FOLDER(folder);
+
+	info = camel_folder_summary_uid(CAMEL_FOLDER_SUMMARY(mf->summary), uid);
+	g_return_val_if_fail(info != NULL, 0);
+
+	return info->flags;
+}
+
+static void mh_set_message_flags(CamelFolder * folder, const char *uid, guint32 flags, guint32 set)
+{
+	CamelMessageInfo *info;
+	CamelMhFolder *mf = CAMEL_MH_FOLDER(folder);
+
+	info = camel_folder_summary_uid(CAMEL_FOLDER_SUMMARY(mf->summary), uid);
+	g_return_if_fail(info != NULL);
+
+	info->flags = (info->flags & ~flags) | (set & flags) | CAMEL_MESSAGE_FOLDER_FLAGGED;
+	camel_folder_summary_touch(CAMEL_FOLDER_SUMMARY(mf->summary));
+
+	gtk_signal_emit_by_name(GTK_OBJECT(folder), "message_changed", uid);
+}
+
+static gboolean mh_get_message_user_flag(CamelFolder * folder, const char *uid, const char *name)
+{
+	CamelMessageInfo *info;
+	CamelMhFolder *mf = CAMEL_MH_FOLDER(folder);
+
+	info = camel_folder_summary_uid(CAMEL_FOLDER_SUMMARY(mf->summary), uid);
+	g_return_val_if_fail(info != NULL, FALSE);
+
+	return camel_flag_get(&info->user_flags, name);
+}
+
+static void mh_set_message_user_flag(CamelFolder * folder, const char *uid, const char *name, gboolean value)
+{
+	CamelMessageInfo *info;
+	CamelMhFolder *mf = CAMEL_MH_FOLDER(folder);
+
+	info = camel_folder_summary_uid(CAMEL_FOLDER_SUMMARY(mf->summary), uid);
+	g_return_if_fail(info != NULL);
+
+	camel_flag_set(&info->user_flags, name, value);
+	info->flags |= CAMEL_MESSAGE_FOLDER_FLAGGED;
+	camel_folder_summary_touch(CAMEL_FOLDER_SUMMARY(mf->summary));
+	gtk_signal_emit_by_name(GTK_OBJECT(folder), "message_changed", uid);
+}
diff --git a/camel/providers/mh/camel-mh-folder.h b/camel/providers/mh/camel-mh-folder.h
new file mode 100644
index 0000000000..e014197442
--- /dev/null
+++ b/camel/providers/mh/camel-mh-folder.h
@@ -0,0 +1,73 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-mh-folder.h : MH folder. */
+
+/* 
+ *
+ * Authors:
+ * 	Michael Zucchi <notzed@helixcode.com>
+ *
+ * Copyright (C) 1999 Helix Code 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
+ */
+
+#ifndef CAMEL_MH_FOLDER_H
+#define CAMEL_MH_FOLDER_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif				/* __cplusplus } */
+#include <gtk/gtk.h>
+#include <camel/camel-folder.h>
+#include <camel/camel-folder-search.h>
+#include <libibex/ibex.h>
+#include "camel-mh-summary.h"
+
+#define CAMEL_MH_FOLDER_TYPE     (camel_mh_folder_get_type ())
+#define CAMEL_MH_FOLDER(obj)     (GTK_CHECK_CAST((obj), CAMEL_MH_FOLDER_TYPE, CamelMhFolder))
+#define CAMEL_MH_FOLDER_CLASS(k) (GTK_CHECK_CLASS_CAST ((k), CAMEL_MH_FOLDER_TYPE, CamelMhFolderClass))
+#define IS_CAMEL_MH_FOLDER(o)    (GTK_CHECK_TYPE((o), CAMEL_MH_FOLDER_TYPE))
+
+typedef struct {
+	CamelFolder parent_object;
+
+	gchar *folder_file_path;	/* contains the messages */
+	gchar *summary_file_path;	/* contains the messages summary */
+	gchar *folder_dir_path;	/* contains the subfolders */
+	gchar *index_file_path;	/* index of body contents */
+
+	ibex *index;	/* index for this folder */
+	CamelMhSummary *summary;
+	CamelFolderSearch *search;	/* used to run searches, we just use the real thing (tm) */
+} CamelMhFolder;
+
+typedef struct {
+	CamelFolderClass parent_class;
+	
+	/* Virtual methods */
+	
+} CamelMhFolderClass;
+
+/* public methods */
+
+/* Standard Gtk function */
+GtkType camel_mh_folder_get_type(void);
+
+#ifdef __cplusplus
+}
+#endif				/* __cplusplus */
+#endif				/* CAMEL_MH_FOLDER_H */
diff --git a/camel/providers/mh/camel-mh-provider.c b/camel/providers/mh/camel-mh-provider.c
new file mode 100644
index 0000000000..6a0aaac492
--- /dev/null
+++ b/camel/providers/mh/camel-mh-provider.c
@@ -0,0 +1,54 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-mbox-provider.c: mbox provider registration code */
+
+/* 
+ * Authors :
+ *   Bertrand Guiheneuf <bertrand@helixcode.com>
+ *
+ * Copyright (C) 2000 HelixCode (www.helixcode.com).
+ *
+ * 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
+ */
+
+#include "config.h"
+#include "camel-mh-store.h"
+#include "camel-provider.h"
+#include "camel-session.h"
+#include "camel-url.h"
+
+static CamelProvider mh_provider = {
+	"mh",
+	"UNIX mh-format mail files",
+
+	"For reading mail delivered by the local system, and for " "storing mail on local disk.",
+
+	"mail",
+
+	0,
+
+	{0, 0},
+
+	NULL
+};
+
+void camel_provider_module_init(CamelSession * session)
+{
+	mh_provider.object_types[CAMEL_PROVIDER_STORE] = camel_mh_store_get_type();
+
+	mh_provider.service_cache = g_hash_table_new(camel_url_hash, camel_url_equal);
+
+	camel_session_register_provider(session, &mh_provider);
+}
diff --git a/camel/providers/mh/camel-mh-store.c b/camel/providers/mh/camel-mh-store.c
new file mode 100644
index 0000000000..6ae885ac27
--- /dev/null
+++ b/camel/providers/mh/camel-mh-store.c
@@ -0,0 +1,169 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-mbox-store.c : class for an mbox store */
+
+/* 
+ *
+ * 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 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
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "camel-mh-store.h"
+#include "camel-mh-folder.h"
+#include "camel-exception.h"
+#include "camel-url.h"
+
+/* Returns the class for a CamelMhStore */
+#define CMHS_CLASS(so) CAMEL_MH_STORE_CLASS (GTK_OBJECT(so)->klass)
+#define CF_CLASS(so) CAMEL_FOLDER_CLASS (GTK_OBJECT(so)->klass)
+#define CMHF_CLASS(so) CAMEL_MH_FOLDER_CLASS (GTK_OBJECT(so)->klass)
+
+static char *get_name(CamelService * service, gboolean brief);
+static CamelFolder *get_folder(CamelStore * store, const char *folder_name, gboolean create, CamelException * ex);
+static void delete_folder(CamelStore * store, const char *folder_name, CamelException * ex);
+static char *get_folder_name(CamelStore * store, const char *folder_name, CamelException * ex);
+
+static void camel_mh_store_class_init(CamelMhStoreClass * camel_mh_store_class)
+{
+	CamelStoreClass *camel_store_class = CAMEL_STORE_CLASS(camel_mh_store_class);
+	CamelServiceClass *camel_service_class = CAMEL_SERVICE_CLASS(camel_mh_store_class);
+
+	/* virtual method overload */
+	camel_service_class->get_name = get_name;
+
+	camel_store_class->get_folder = get_folder;
+	camel_store_class->delete_folder = delete_folder;
+	camel_store_class->get_folder_name = get_folder_name;
+}
+
+static void camel_mh_store_init(gpointer object, gpointer klass)
+{
+	CamelService *service = CAMEL_SERVICE(object);
+	CamelStore *store = CAMEL_STORE(object);
+
+	service->url_flags = CAMEL_SERVICE_URL_NEED_PATH;
+
+	/* mh names are filenames, so they are case-sensitive. */
+	store->folders = g_hash_table_new(g_str_hash, g_str_equal);
+}
+
+GtkType camel_mh_store_get_type(void)
+{
+	static GtkType camel_mh_store_type = 0;
+
+	if (!camel_mh_store_type) {
+		GtkTypeInfo camel_mh_store_info = {
+			"CamelMhStore",
+			sizeof(CamelMhStore),
+			sizeof(CamelMhStoreClass),
+			(GtkClassInitFunc) camel_mh_store_class_init,
+			(GtkObjectInitFunc) camel_mh_store_init,
+			/* reserved_1 */ NULL,
+			/* reserved_2 */ NULL,
+			(GtkClassInitFunc) NULL,
+		};
+
+		camel_mh_store_type = gtk_type_unique(CAMEL_STORE_TYPE, &camel_mh_store_info);
+	}
+
+	return camel_mh_store_type;
+}
+
+const gchar *camel_mh_store_get_toplevel_dir(CamelMhStore * store)
+{
+	CamelURL *url = CAMEL_SERVICE(store)->url;
+
+	g_assert(url != NULL);
+	return url->path;
+}
+
+static CamelFolder *get_folder(CamelStore * store, const char *folder_name, gboolean create, CamelException * ex)
+{
+	CamelFolder *new_folder = NULL;
+	char *name;
+	struct stat st;
+
+	name = g_strdup_printf("%s%s", CAMEL_SERVICE(store)->url->path, folder_name);
+
+	if (stat(name, &st) == -1) {
+		int fd;
+
+		if (errno != ENOENT) {
+			camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
+					     "Could not open folder `%s':" "\n%s", folder_name, g_strerror(errno));
+			goto done;
+		}
+		if (!create) {
+			camel_exception_setv(ex, CAMEL_EXCEPTION_STORE_NO_FOLDER,
+					     "Folder `%s' does not exist.", folder_name);
+			goto done;
+		}
+
+		if (mkdir (name, 0600) != 0) {
+			camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
+					     "Could not create folder `%s':" "\n%s", folder_name, g_strerror(errno));
+			goto done;
+		}
+	} else if (!S_ISDIR(st.st_mode)) {
+		camel_exception_setv(ex, CAMEL_EXCEPTION_STORE_NO_FOLDER, "`%s' is not a directory.", name);
+		goto done;
+	}
+
+	new_folder = gtk_type_new(CAMEL_MH_FOLDER_TYPE);
+
+	CF_CLASS(new_folder)->init(new_folder, store, NULL, folder_name, "/", TRUE, ex);
+done:
+	g_free(name);
+	return new_folder;
+}
+
+static void delete_folder(CamelStore * store, const char *folder_name, CamelException * ex)
+{
+	char *name;
+
+	name = g_strdup_printf("%s%s", CAMEL_SERVICE(store)->url->path, folder_name);
+	camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
+			     "Could not delete folder `%s':\n%s", folder_name, "not implemented");
+	g_free(name);
+}
+
+static char *get_folder_name(CamelStore * store, const char *folder_name, CamelException * ex)
+{
+	/* For now, we don't allow hieararchy. FIXME. */
+	if (strchr(folder_name + 1, '/')) {
+		camel_exception_set(ex, CAMEL_EXCEPTION_STORE_NO_FOLDER, "Mh folders may not be nested.");
+		return NULL;
+	}
+
+	return *folder_name == '/' ? g_strdup(folder_name) : g_strdup_printf("/%s", folder_name);
+}
+
+static char *get_name(CamelService * service, gboolean brief)
+{
+	if (brief)
+		return g_strdup(service->url->path);
+	else
+		return g_strdup_printf("Local mail file %s", service->url->path);
+}
diff --git a/camel/providers/mh/camel-mh-store.h b/camel/providers/mh/camel-mh-store.h
new file mode 100644
index 0000000000..7040b27ffe
--- /dev/null
+++ b/camel/providers/mh/camel-mh-store.h
@@ -0,0 +1,60 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-mh-store.h : class for an mh store */
+
+/* 
+ *
+ * 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 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
+ */
+
+#ifndef CAMEL_MH_STORE_H
+#define CAMEL_MH_STORE_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif				/* __cplusplus } */
+#include <gtk/gtk.h>
+#include "camel-store.h"
+#define CAMEL_MH_STORE_TYPE     (camel_mh_store_get_type ())
+#define CAMEL_MH_STORE(obj)     (GTK_CHECK_CAST((obj), CAMEL_MH_STORE_TYPE, CamelMhStore))
+#define CAMEL_MH_STORE_CLASS(k) (GTK_CHECK_CLASS_CAST ((k), CAMEL_MH_STORE_TYPE, CamelMhStoreClass))
+#define IS_CAMEL_MH_STORE(o)    (GTK_CHECK_TYPE((o), CAMEL_MH_STORE_TYPE))
+
+typedef struct {
+	CamelStore parent_object;
+	
+} CamelMhStore;
+
+typedef struct {
+	CamelStoreClass parent_class;
+	
+} CamelMhStoreClass;
+
+/* public methods */
+
+/* Standard Gtk function */
+GtkType camel_mh_store_get_type(void);
+
+const gchar *camel_mh_store_get_toplevel_dir(CamelMhStore * store);
+
+#ifdef __cplusplus
+}
+#endif				/* __cplusplus */
+#endif				/* CAMEL_MH_STORE_H */
diff --git a/camel/providers/mh/camel-mh-summary.c b/camel/providers/mh/camel-mh-summary.c
new file mode 100644
index 0000000000..83f2113445
--- /dev/null
+++ b/camel/providers/mh/camel-mh-summary.c
@@ -0,0 +1,277 @@
+/*
+ *  Copyright (C) 2000 Helix Code Inc.
+ *
+ *  Authors: Not Zed <notzed@lostzed.mmc.com.au>
+ *
+ *  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 <gtk/gtk.h>
+
+#include "camel-mh-summary.h"
+#include <camel/camel-mime-message.h>
+
+#include <sys/stat.h>
+#include <sys/uio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <sys/types.h>
+#include <dirent.h>
+
+#include <ctype.h>
+
+#define d(x)
+
+#define CAMEL_MH_SUMMARY_VERSION (0x2000)
+
+static CamelMessageInfo *message_info_new(CamelFolderSummary *, struct _header_raw *);
+
+static void camel_mh_summary_class_init	(CamelMhSummaryClass *class);
+static void camel_mh_summary_init	(CamelMhSummary *gspaper);
+static void camel_mh_summary_finalise	(GtkObject *obj);
+
+#define _PRIVATE(x) (((CamelMhSummary *)(x))->priv)
+
+struct _CamelMhSummaryPrivate {
+	char *current_uid;
+};
+
+static CamelFolderSummaryClass *parent_class;
+
+guint
+camel_mh_summary_get_type (void)
+{
+	static guint type = 0;
+	
+	if (!type) {
+		GtkTypeInfo type_info = {
+			"CamelMhSummary",
+			sizeof(CamelMhSummary),
+			sizeof(CamelMhSummaryClass),
+			(GtkClassInitFunc)camel_mh_summary_class_init,
+			(GtkObjectInitFunc)camel_mh_summary_init,
+			(GtkArgSetFunc)NULL,
+			(GtkArgGetFunc)NULL
+		};
+		
+		type = gtk_type_unique(camel_folder_summary_get_type (), &type_info);
+	}
+	
+	return type;
+}
+
+static void
+camel_mh_summary_class_init (CamelMhSummaryClass *class)
+{
+	GtkObjectClass *object_class;
+	CamelFolderSummaryClass *sklass = (CamelFolderSummaryClass *) class;
+	
+	object_class = (GtkObjectClass *)class;
+	parent_class = gtk_type_class(camel_folder_summary_get_type ());
+
+	object_class->finalize = camel_mh_summary_finalise;
+
+	/* override methods */
+	sklass->message_info_new = message_info_new;
+
+}
+
+static void
+camel_mh_summary_init (CamelMhSummary *o)
+{
+	struct _CamelFolderSummary *s = (CamelFolderSummary *) o;
+
+	o->priv = g_malloc0(sizeof(*o->priv));
+
+	/* set unique file version */
+	s->version += CAMEL_MH_SUMMARY_VERSION;
+}
+
+static void
+camel_mh_summary_finalise(GtkObject *obj)
+{
+	CamelMhSummary *o = (CamelMhSummary *)obj;
+
+	g_free(o->mh_path);
+
+        ((GtkObjectClass *)(parent_class))->finalize(obj);
+}
+
+/**
+ * camel_mh_summary_new:
+ *
+ * Create a new CamelMhSummary object.
+ * 
+ * Return value: A new #CamelMhSummary object.
+ **/
+CamelMhSummary	*camel_mh_summary_new	(const char *filename, const char *mhdir, ibex *index)
+{
+	CamelMhSummary *o = (CamelMhSummary *)gtk_type_new(camel_mh_summary_get_type ());
+
+	camel_folder_summary_set_build_content((CamelFolderSummary *)o, TRUE);
+	camel_folder_summary_set_filename((CamelFolderSummary *)o, filename);
+	o->mh_path = g_strdup(mhdir);
+	o->index = index;
+	return o;
+}
+
+static CamelMessageInfo *message_info_new(CamelFolderSummary * s, struct _header_raw *h)
+{
+	CamelMessageInfo *mi;
+	CamelMhSummary *mhs = (CamelMhSummary *)s;
+
+	mi = ((CamelFolderSummaryClass *) parent_class)->message_info_new(s, h);
+	if (mi) {
+		/* it only ever indexes 1 message at a time */
+		mi->uid = g_strdup(mhs->priv->current_uid);
+	}
+
+	return mi;
+}
+
+int		camel_mh_summary_load(CamelMhSummary * mhs, int forceindex)
+{
+	CamelFolderSummary *s = CAMEL_FOLDER_SUMMARY(mhs);
+
+	d(printf("loading summary ...\n"));
+
+	if (forceindex || camel_folder_summary_load(s) == -1) {
+		camel_folder_summary_clear(s);
+	}
+	return camel_mh_summary_check(mhs, forceindex);
+}
+
+int		camel_mh_summary_add(CamelMhSummary * mhs, const char *name, int forceindex)
+{
+	char *filename = g_strdup_printf("%s/%s", mhs->mh_path, name);
+	int fd;
+	CamelMimeParser *mp;
+
+	d(printf("summarising: %s\n", name));
+
+	fd = open(filename, O_RDONLY);
+	if (fd == -1) {
+		g_warning("Cannot summarise/index: %s: %s", filename, strerror(errno));
+		g_free(filename);
+		return -1;
+	}
+	mp = camel_mime_parser_new();
+	camel_mime_parser_scan_from(mp, FALSE);
+	camel_mime_parser_init_with_fd(mp, fd);
+	if (forceindex || !ibex_contains_name(mhs->index, (char *)name)) {
+		d(printf("forcing indexing of message content\n"));
+		camel_folder_summary_set_index((CamelFolderSummary *)mhs, mhs->index);
+	} else {
+		camel_folder_summary_set_index((CamelFolderSummary *)mhs, NULL);
+	}
+	mhs->priv->current_uid = (char *)name;
+	camel_folder_summary_add_from_parser((CamelFolderSummary *)mhs, mp);
+	gtk_object_unref((GtkObject *)mp);
+	mhs->priv->current_uid = NULL;
+	camel_folder_summary_set_index((CamelFolderSummary *)mhs, NULL);
+	g_free(filename);
+	return 0;
+}
+
+static void
+remove_summary(char *key, CamelMessageInfo *info, CamelMhSummary *mhs)
+{
+	d(printf("removing message %s from summary\n", key));
+	ibex_unindex(mhs->index, info->uid);
+	camel_folder_summary_remove((CamelFolderSummary *)mhs, info);
+}
+
+int		camel_mh_summary_check(CamelMhSummary * mhs, int forceindex)
+{
+	DIR *dir;
+	struct dirent *d;
+	char *p, c;
+	CamelMessageInfo *info;
+	GHashTable *left;
+	int i, count;
+
+	d(printf("checking summary ...\n"));
+
+	/* scan the directory, check for mail files not in the index, or index entries that
+	   no longer exist */
+	dir = opendir(mhs->mh_path);
+	if (dir == NULL)
+		return -1;
+
+	/* keeps track of all uid's that have not been processed */
+	left = g_hash_table_new(g_str_hash, g_str_equal);
+	count = camel_folder_summary_count((CamelFolderSummary *)mhs);
+	for (i=0;i<count;i++) {
+		info = camel_folder_summary_index((CamelFolderSummary *)mhs, i);
+		if (info) {
+			g_hash_table_insert(left, info->uid, info);
+		}
+	}
+	while ( (d = readdir(dir)) ) {
+		/* FIXME: also run stat to check for regular file */
+		p = d->d_name;
+		while ( (c = *p++) ) {
+			if (!isdigit(c))
+				break;
+		}
+		if (c==0) {
+			info = camel_folder_summary_uid((CamelFolderSummary *)mhs, d->d_name);
+			if (info == NULL || (!ibex_contains_name(mhs->index, d->d_name))) {
+				/* need to add this file to the summary */
+				if (info != NULL) {
+					g_hash_table_remove(left, info->uid);
+					camel_folder_summary_remove((CamelFolderSummary *)mhs, info);
+				}
+				camel_mh_summary_add(mhs, d->d_name, forceindex);
+			} else {
+				g_hash_table_remove(left, info->uid);
+			}
+		}
+	}
+	closedir(dir);
+	g_hash_table_foreach(left, (GHFunc)remove_summary, mhs);
+	g_hash_table_destroy(left);
+
+	return 0;
+}
+
+/* sync the summary with the ondisk files.
+   It doesnt store the state in the file, the summary only, == MUCH faster */
+int		camel_mh_summary_sync(CamelMhSummary * mhs, int expunge, CamelException *ex)
+{
+	int count, i;
+	CamelMessageInfo *info;
+	char *name;
+
+	if (!expunge)
+		return 0;
+
+	count = camel_folder_summary_count((CamelFolderSummary *)mhs);
+	for (i=0;i<count;i++) {
+		info = camel_folder_summary_index((CamelFolderSummary *)mhs, i);
+		if (info && info->flags & CAMEL_MESSAGE_DELETED) {
+			name = g_strdup_printf("%s/%s", mhs->mh_path, info->uid);
+			d(printf("deleting %s\n", name));
+			if (unlink(name) == 0 || errno==ENOENT) {
+				camel_folder_summary_remove((CamelFolderSummary *)mhs, info);
+			}
+		}
+	}
+	return 0;
+}
+
diff --git a/camel/providers/mh/camel-mh-summary.h b/camel/providers/mh/camel-mh-summary.h
new file mode 100644
index 0000000000..b7c8867959
--- /dev/null
+++ b/camel/providers/mh/camel-mh-summary.h
@@ -0,0 +1,62 @@
+/*
+ *  Copyright (C) 2000 Helix Code Inc.
+ *
+ *  Authors: Not Zed <notzed@lostzed.mmc.com.au>
+ *
+ *  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.
+ */
+
+#ifndef _CAMEL_MH_SUMMARY_H
+#define _CAMEL_MH_SUMMARY_H
+
+#include <gtk/gtk.h>
+#include <camel/camel-folder-summary.h>
+#include <camel/camel-exception.h>
+#include <libibex/ibex.h>
+
+#define CAMEL_MH_SUMMARY(obj)	GTK_CHECK_CAST (obj, camel_mh_summary_get_type (), CamelMhSummary)
+#define CAMEL_MH_SUMMARY_CLASS(klass)	GTK_CHECK_CLASS_CAST (klass, camel_mh_summary_get_type (), CamelMhSummaryClass)
+#define IS_CAMEL_MH_SUMMARY(obj)      GTK_CHECK_TYPE (obj, camel_mh_summary_get_type ())
+
+typedef struct _CamelMhSummary	CamelMhSummary;
+typedef struct _CamelMhSummaryClass	CamelMhSummaryClass;
+
+struct _CamelMhSummary {
+	CamelFolderSummary parent;
+	struct _CamelMhSummaryPrivate *priv;
+
+	char *mh_path;
+	ibex *index;
+};
+
+struct _CamelMhSummaryClass {
+	CamelFolderSummaryClass parent_class;
+
+	/* virtual methods */
+
+	/* signals */
+};
+
+guint		camel_mh_summary_get_type	(void);
+CamelMhSummary	*camel_mh_summary_new	(const char *filename, const char *mhdir, ibex *index);
+
+/* methods */
+int		camel_mh_summary_load(CamelMhSummary * mhs, int forceindex);
+int		camel_mh_summary_check(CamelMhSummary * mhs, int forceindex);
+int		camel_mh_summary_add(CamelMhSummary * mhs, const char *name, int forceindex);
+int		camel_mh_summary_sync(CamelMhSummary * mhs, int expunge, CamelException *ex);
+
+#endif /* ! _CAMEL_MH_SUMMARY_H */
+
diff --git a/camel/providers/mh/libcamelmh.urls b/camel/providers/mh/libcamelmh.urls
new file mode 100644
index 0000000000..372daaa98f
--- /dev/null
+++ b/camel/providers/mh/libcamelmh.urls
@@ -0,0 +1 @@
+mh