path: root/mail/mail-component.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* mail-component.c
 *
 * Copyright (C) 2003  Ximian Inc.
 *
 * This  program is free  software; you  can redistribute  it and/or
 * modify it under the terms of version 2  of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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.
 *
 * Author: Ettore Perazzoli <ettore@ximian.com>
 */


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

#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>

#include "em-popup.h"
#include "em-utils.h"
#include "em-format.h"
#include "em-folder-tree.h"
#include "em-folder-browser.h"
#include "em-folder-selector.h"
#include "em-folder-selection.h"
#include "em-migrate.h"

#include "mail-config.h"
#include "mail-component.h"
#include "mail-folder-cache.h"
#include "mail-vfolder.h"
#include "mail-mt.h"
#include "mail-ops.h"
#include "mail-tools.h"
#include "mail-send-recv.h"
#include "mail-session.h"

#include "e-task-bar.h"

#include <gtk/gtklabel.h>

#include <e-util/e-mktemp.h>
#include <e-util/e-dialog-utils.h>

#include <gal/e-table/e-tree.h>
#include <gal/e-table/e-tree-memory.h>

#include <camel/camel.h>
#include <camel/camel-file-utils.h>

#include <bonobo/bonobo-control.h>
#include <bonobo/bonobo-widget.h>


#define d(x) x


#define PARENT_TYPE bonobo_object_get_type ()
static BonoboObjectClass *parent_class = NULL;

struct _MailComponentPrivate {
    char *base_directory;
    
    EMFolderTreeModel *model;

    EActivityHandler *activity_handler;
    
    MailAsyncEvent *async_event;
    GHashTable *store_hash; /* display_name by store */
    
    RuleContext *search_context;
    
    char *context_path; /* current path for right-click menu */
    
    CamelStore *local_store;
};

/* Utility functions.  */

static void
add_store (MailComponent *component, const char *name, CamelStore *store, CamelException *ex)
{
    camel_object_ref (store);
    g_hash_table_insert (component->priv->store_hash, store, g_strdup (name));
    em_folder_tree_model_add_store (component->priv->model, store, name);
    mail_note_store (store, NULL, NULL, NULL);
}

static void
load_accounts (MailComponent *component, EAccountList *accounts)
{
    EIterator *iter;
    
    /* Load each service (don't connect!). Check its provider and
     * see if this belongs in the shell's folder list. If so, add
     * it.
     */
    
    iter = e_list_get_iterator ((EList *) accounts);
    while (e_iterator_is_valid (iter)) {
        EAccountService *service;
        EAccount *account;
        const char *name;
        
        account = (EAccount *) e_iterator_get (iter);
        service = account->source;
        name = account->name;
        
        if (account->enabled && service->url != NULL)
            mail_component_load_store_by_uri (component, service->url, name);
        
        e_iterator_next (iter);
    }
    
    g_object_unref (iter);
}

static void
store_go_online (gpointer key, gpointer value, gpointer data)
{
    CamelStore *store = key;
    CamelService *service = CAMEL_SERVICE (store);
    
    if (! (service->provider->flags & CAMEL_PROVIDER_IS_REMOTE)
        || (service->provider->flags & CAMEL_PROVIDER_IS_EXTERNAL))
        return;
    
    if ((CAMEL_IS_DISCO_STORE (service)
         && camel_disco_store_status (CAMEL_DISCO_STORE (service)) == CAMEL_DISCO_STORE_OFFLINE)
        || service->status != CAMEL_SERVICE_DISCONNECTED) {
        mail_store_set_offline (store, FALSE, NULL, NULL);
        mail_note_store (store, NULL, NULL, NULL);
    }
}

static void
go_online (MailComponent *component)
{
    camel_session_set_online (session, TRUE);
    mail_session_set_interactive (TRUE);
    mail_component_stores_foreach (component, store_go_online, NULL);
}

static void
setup_search_context (MailComponent *component)
{
    MailComponentPrivate *priv = component->priv;
    char *user = g_strdup_printf ("%s/evolution/searches.xml", g_get_home_dir ()); /* EPFIXME should be somewhere else. */
    char *system = g_strdup (EVOLUTION_PRIVDATADIR "/vfoldertypes.xml");
    
    priv->search_context = rule_context_new ();
    g_object_set_data_full (G_OBJECT (priv->search_context), "user", user, g_free);
    g_object_set_data_full (G_OBJECT (priv->search_context), "system", system, g_free);
    
    rule_context_add_part_set (priv->search_context, "partset", filter_part_get_type (),
                   rule_context_add_part, rule_context_next_part);
    
    rule_context_add_rule_set (priv->search_context, "ruleset", filter_rule_get_type (),
                   rule_context_add_rule, rule_context_next_rule);
    
    rule_context_load (priv->search_context, system, user);
}

/* Local store setup.  */
char *default_drafts_folder_uri;
CamelFolder *drafts_folder = NULL;
char *default_sent_folder_uri;
CamelFolder *sent_folder = NULL;
char *default_outbox_folder_uri;
CamelFolder *outbox_folder = NULL;
char *default_inbox_folder_uri;
CamelFolder *inbox_folder = NULL;

static struct {
    char *base;
    char **uri;
    CamelFolder **folder;
} default_folders[] = {
    { "Inbox", &default_inbox_folder_uri, &inbox_folder },
    { "Drafts", &default_drafts_folder_uri, &drafts_folder },
    { "Outbox", &default_outbox_folder_uri, &outbox_folder },
    { "Sent", &default_sent_folder_uri, &sent_folder },
};

static void
setup_local_store(MailComponent *component)
{
    MailComponentPrivate *p = component->priv;
    CamelException ex;
    char *store_uri;
    int i;

    g_assert(p->local_store == NULL);

    /* EPFIXME It should use base_directory once we have moved it.  */
    store_uri = g_strconcat("mbox:", g_get_home_dir (), "/.evolution/mail/local", NULL);
    p->local_store = mail_component_load_store_by_uri (component, store_uri, _("On this Computer"));
    camel_object_ref (p->local_store);
    
    camel_exception_init (&ex);
    for (i=0;i<sizeof(default_folders)/sizeof(default_folders[0]);i++) {
        /* FIXME: should this uri be account relative? */
        *default_folders[i].uri = g_strdup_printf("%s#%s", store_uri, default_folders[i].base);
        *default_folders[i].folder = camel_store_get_folder(p->local_store, default_folders[i].base,
                                    CAMEL_STORE_FOLDER_CREATE, &ex);
        camel_exception_clear(&ex);
    }

    g_free(store_uri);
}

static void
folder_selected_cb (EMFolderTree *emft, const char *path, const char *uri, EMFolderView *view)
{
    if (!path || !strcmp (path, "/"))
        em_folder_view_set_folder (view, NULL, NULL);
    else
        em_folder_view_set_folder_uri (view, uri);
}

static void
view_control_activate_cb (BonoboControl *control, gboolean activate, EMFolderView *view)
{
    BonoboUIComponent *uic;
    
    uic = bonobo_control_get_ui_component (control);
    g_assert (uic != NULL);
    
    if (activate) {
        Bonobo_UIContainer container;
        
        container = bonobo_control_get_remote_ui_container (control, NULL);
        bonobo_ui_component_set_container (uic, container, NULL);
        bonobo_object_release_unref (container, NULL);
        
        g_assert (container == bonobo_ui_component_get_container(uic));
        g_return_if_fail (container != CORBA_OBJECT_NIL);
        
        em_folder_view_activate (view, uic, activate);
    } else {
        em_folder_view_activate (view, uic, activate);
        bonobo_ui_component_unset_container (uic, NULL);
    }
}


/* GObject methods.  */

static void
impl_dispose (GObject *object)
{
    MailComponentPrivate *priv = MAIL_COMPONENT (object)->priv;

    if (priv->activity_handler != NULL) {
        g_object_unref (priv->activity_handler);
        priv->activity_handler = NULL;
    }

    if (priv->search_context != NULL) {
        g_object_unref (priv->search_context);
        priv->search_context = NULL;
    }
    
    if (priv->local_store != NULL) {
        camel_object_unref (CAMEL_OBJECT (priv->local_store));
        priv->local_store = NULL;
    }
    
    (* G_OBJECT_CLASS (parent_class)->dispose) (object);
}

static void
store_hash_free (gpointer key, gpointer value, gpointer user_data)
{
    CamelStore *store = key;
    char *name = value;
    
    g_free (name);
    camel_object_unref (store);
}

static void
impl_finalize (GObject *object)
{
    MailComponentPrivate *priv = MAIL_COMPONENT (object)->priv;
    
    g_free (priv->base_directory);
    
    mail_async_event_destroy (priv->async_event);
    
    g_hash_table_foreach (priv->store_hash, store_hash_free, NULL);
    g_hash_table_destroy (priv->store_hash);
    
    if (mail_async_event_destroy (priv->async_event) == -1) {
        g_warning("Cannot destroy async event: would deadlock");
        g_warning(" system may be unstable at exit");
    }
    
    g_free (priv->context_path);
    g_free (priv);
    
    (* G_OBJECT_CLASS (parent_class)->finalize) (object);
}


/* Evolution::Component CORBA methods.  */

static void
impl_createControls (PortableServer_Servant servant,
             Bonobo_Control *corba_tree_control,
             Bonobo_Control *corba_view_control,
             Bonobo_Control *corba_statusbar_control,
             CORBA_Environment *ev)
{
    MailComponent *mail_component = MAIL_COMPONENT (bonobo_object_from_servant (servant));
    MailComponentPrivate *priv = mail_component->priv;
    BonoboControl *tree_control;
    BonoboControl *view_control;
    BonoboControl *statusbar_control;
    GtkWidget *tree_widget;
    GtkWidget *view_widget;
    GtkWidget *statusbar_widget;
    
    view_widget = em_folder_browser_new ();
    tree_widget = (GtkWidget *) em_folder_tree_new_with_model (priv->model);
    em_folder_tree_enable_drag_and_drop ((EMFolderTree *) tree_widget);
    em_format_set_session ((EMFormat *) ((EMFolderView *) view_widget)->preview, session);
    
    statusbar_widget = e_task_bar_new ();
    e_activity_handler_attach_task_bar (priv->activity_handler, E_TASK_BAR (statusbar_widget));

    gtk_widget_show (tree_widget);
    gtk_widget_show (view_widget);
    gtk_widget_show (statusbar_widget);
    
    tree_control = bonobo_control_new (tree_widget);
    view_control = bonobo_control_new (view_widget);
    statusbar_control = bonobo_control_new (statusbar_widget);
    
    *corba_tree_control = CORBA_Object_duplicate (BONOBO_OBJREF (tree_control), ev);
    *corba_view_control = CORBA_Object_duplicate (BONOBO_OBJREF (view_control), ev);
    *corba_statusbar_control = CORBA_Object_duplicate (BONOBO_OBJREF (statusbar_control), ev);
    
    g_signal_connect (view_control, "activate", G_CALLBACK (view_control_activate_cb), view_widget);
    
    g_signal_connect (tree_widget, "folder-selected", G_CALLBACK (folder_selected_cb), view_widget);
}


static GNOME_Evolution_CreatableItemTypeList *
impl__get_userCreatableItems (PortableServer_Servant servant, CORBA_Environment *ev)
{
    GNOME_Evolution_CreatableItemTypeList *list = GNOME_Evolution_CreatableItemTypeList__alloc ();

    list->_length  = 1;
    list->_maximum = list->_length;
    list->_buffer  = GNOME_Evolution_CreatableItemTypeList_allocbuf (list->_length);

    CORBA_sequence_set_release (list, FALSE);

    list->_buffer[0].id = "message";
    list->_buffer[0].description = _("New Mail Message");
    list->_buffer[0].menuDescription = _("_Mail Message");
    list->_buffer[0].tooltip = _("Compose a new mail message");
    list->_buffer[0].menuShortcut = 'm';
    list->_buffer[0].iconName = "new-message.xpm";

    return list;
}

static void
impl_requestCreateItem (PortableServer_Servant servant,
            const CORBA_char *item_type_name,
            CORBA_Environment *ev)
{
    if (strcmp (item_type_name, "message") != 0) {
        CORBA_exception_set (ev, CORBA_USER_EXCEPTION,
                     ex_GNOME_Evolution_Component_UnknownType, NULL);
        return;
    }
    
    em_utils_compose_new_message ();
}

static void
impl_handleURI (PortableServer_Servant servant, const char *uri, CORBA_Environment *ev)
{
    if (!strncmp (uri, "mailto:", 7)) {
        em_utils_compose_new_message_with_mailto (uri);
    }
}

static void
impl_sendAndReceive (PortableServer_Servant servant, CORBA_Environment *ev)
{
    mail_send_receive ();
}

static gboolean
impl_upgradeFromVersion (PortableServer_Servant servant, short major, short minor, short revision, CORBA_Environment *ev)
{
    CamelException ex;
    
    camel_exception_init (&ex);
    
    switch (major) {
    case 1:
        switch (minor) {
        case 0:
        case 2:
        case 4:
            em_migrate (mail_component_peek (), &ex);
            break;
        }
        break;
    }
    
    camel_exception_clear (&ex);
    
    return TRUE;
}

/* Initialization.  */

static void
mail_component_class_init (MailComponentClass *class)
{
    POA_GNOME_Evolution_Component__epv *epv = &class->epv;
    GObjectClass *object_class = G_OBJECT_CLASS (class);
    
    parent_class = g_type_class_peek_parent (class);
    
    object_class->dispose  = impl_dispose;
    object_class->finalize = impl_finalize;
    
    epv->createControls          = impl_createControls;
    epv->_get_userCreatableItems = impl__get_userCreatableItems;
    epv->requestCreateItem       = impl_requestCreateItem;
    epv->handleURI               = impl_handleURI;
    epv->sendAndReceive          = impl_sendAndReceive;
    epv->upgradeFromVersion      = impl_upgradeFromVersion;
}

static void
mail_component_init (MailComponent *component)
{
    MailComponentPrivate *priv;
    EAccountList *accounts;
    struct stat st;
    char *mail_dir;
    
    priv = g_new0 (MailComponentPrivate, 1);
    component->priv = priv;
    
    priv->base_directory = g_build_filename (g_get_home_dir (), ".evolution", NULL);
    if (camel_mkdir (priv->base_directory, 0777) == -1 && errno != EEXIST)
        abort ();
    
    priv->model = em_folder_tree_model_new (priv->base_directory);
    
    priv->activity_handler = e_activity_handler_new ();
    
    /* EPFIXME: Turn into an object?  */
    mail_session_init (priv->base_directory);
    
    priv->async_event = mail_async_event_new();
    priv->store_hash = g_hash_table_new (NULL, NULL);
    
    /* migrate evolution 1.x folders to 2.0's location/format */
    mail_dir = g_strdup_printf ("%s/mail", priv->base_directory);
    if (stat (mail_dir, &st) == -1) {
        CamelException ex;
        
        camel_exception_init (&ex);
        if (em_migrate (component, &ex) == -1) {
            GtkWidget *dialog;
            
            dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL, GTK_MESSAGE_WARNING, GTK_BUTTONS_CLOSE,
                             _("The following error occured while migrating your mail data:\n%s"),
                             camel_exception_get_description (&ex));
            
            g_signal_connect (dialog, "response", G_CALLBACK (gtk_widget_destroy), dialog);
            gtk_widget_show (dialog);
            
            camel_exception_clear (&ex);
        }
    }
    g_free (mail_dir);
    
    setup_local_store (component);
    
    accounts = mail_config_get_accounts ();
    load_accounts(component, accounts);
    
    /* mail_autoreceive_setup (); EPFIXME keep it off for testing */
    
    setup_search_context (component);
    
    /* EPFIXME not sure about this.  */
    go_online (component);
}


/* Public API.  */

MailComponent *
mail_component_peek (void)
{
    static MailComponent *component = NULL;

    if (component == NULL) {
        component = g_object_new (mail_component_get_type (), NULL);

        /* FIXME: this should all be initialised in a starutp routine, not from the peek function,
           this covers much of the ::init method's content too */
        vfolder_load_storage ();
    }

    return component;
}


const char *
mail_component_peek_base_directory (MailComponent *component)
{
    return component->priv->base_directory;
}

RuleContext *
mail_component_peek_search_context (MailComponent *component)
{
    return component->priv->search_context;
}

EActivityHandler *
mail_component_peek_activity_handler (MailComponent *component)
{
    return component->priv->activity_handler;
}

void
mail_component_add_store (MailComponent *component, CamelStore *store, const char *name)
{
    CamelException ex;
    
    camel_exception_init (&ex);
    
    if (name == NULL) {
        char *service_name;
        
        service_name = camel_service_get_name ((CamelService *) store, TRUE);
        add_store (component, service_name, store, &ex);
        g_free (service_name);
    } else {
        add_store (component, name, store, &ex);
    }
    
    camel_exception_clear (&ex);
}


/**
 * mail_component_load_store_by_uri:
 * @component: mail component
 * @uri: uri of store
 * @name: name of store (used for display purposes)
 * 
 * Return value: Pointer to the newly added CamelStore.  The caller is supposed
 * to ref the object if it wants to store it.
 **/
CamelStore *
mail_component_load_store_by_uri (MailComponent *component, const char *uri, const char *name)
{
    CamelException ex;
    CamelStore *store;
    CamelProvider *prov;
    
    camel_exception_init (&ex);
    
    /* Load the service (don't connect!). Check its provider and
     * see if this belongs in the shell's folder list. If so, add
     * it.
     */
    
    prov = camel_session_get_provider (session, uri, &ex);
    if (prov == NULL) {
        /* EPFIXME: real error dialog */
        g_warning ("couldn't get service %s: %s\n", uri,
               camel_exception_get_description (&ex));
        camel_exception_clear (&ex);
        return NULL;
    }
    
    if (!(prov->flags & CAMEL_PROVIDER_IS_STORAGE) ||
        (prov->flags & CAMEL_PROVIDER_IS_EXTERNAL))
        return NULL;
    
    store = (CamelStore *) camel_session_get_service (session, uri, CAMEL_PROVIDER_STORE, &ex);
    if (store == NULL) {
        /* EPFIXME: real error dialog */
        g_warning ("couldn't get service %s: %s\n", uri,
               camel_exception_get_description (&ex));
        camel_exception_clear (&ex);
        return NULL;
    }
    
    if (name != NULL) {
        add_store (component, name, store, &ex);
    } else {
        char *service_name;
        
        service_name = camel_service_get_name ((CamelService *) store, TRUE);
        add_store (component, service_name, store, &ex);
        g_free (service_name);
    }
    
    if (camel_exception_is_set (&ex)) {
        /* EPFIXME: real error dialog */
        g_warning ("Cannot load store: %s",
               camel_exception_get_description (&ex));
        camel_exception_clear (&ex);
    }
    
    camel_object_unref (store);
    
    return store;
}


static void
store_disconnect (CamelStore *store, void *event_data, void *user_data)
{
    camel_service_disconnect (CAMEL_SERVICE (store), TRUE, NULL);
    camel_object_unref (store);
}

void
mail_component_remove_store (MailComponent *component, CamelStore *store)
{
    MailComponentPrivate *priv = component->priv;
    char *name;
    
    /* Because the store_hash holds a reference to each store
     * used as a key in it, none of them will ever be gc'ed, meaning
     * any call to camel_session_get_{service,store} with the same
     * URL will always return the same object. So this works.
     */
    
    if (!(name = g_hash_table_lookup (priv->store_hash, store)))
        return;
    
    g_hash_table_remove (priv->store_hash, store);
    g_free (name);
    
    /* so i guess potentially we could have a race, add a store while one
       being removed.  ?? */
    mail_note_store_remove (store);
    
    em_folder_tree_model_remove_store (priv->model, store);
    
    mail_async_event_emit (priv->async_event, MAIL_ASYNC_THREAD, (MailAsyncFunc) store_disconnect, store, NULL, NULL);
}


void
mail_component_remove_store_by_uri (MailComponent *component, const char *uri)
{
    CamelProvider *prov;
    CamelStore *store;
    
    if (!(prov = camel_session_get_provider (session, uri, NULL)))
        return;
    
    if (!(prov->flags & CAMEL_PROVIDER_IS_STORAGE) ||
        (prov->flags & CAMEL_PROVIDER_IS_EXTERNAL))
        return;
    
    store = (CamelStore *) camel_session_get_service (session, uri, CAMEL_PROVIDER_STORE, NULL);
    if (store != NULL) {
        mail_component_remove_store (component, store);
        camel_object_unref (store);
    }
}


int
mail_component_get_store_count (MailComponent *component)
{
    return g_hash_table_size (component->priv->store_hash);
}


void
mail_component_stores_foreach (MailComponent *component, GHFunc func, void *user_data)
{
    g_hash_table_foreach (component->priv->store_hash, func, user_data);
}


void
mail_component_remove_folder (MailComponent *component, CamelStore *store, const char *path)
{
    /* FIXME: implement me. but first, am I really even needed? */
}


EMFolderTreeModel *
mail_component_peek_tree_model (MailComponent *component)
{
    return component->priv->model;
}

struct _CamelFolder *
mail_component_get_local_inbox(MailComponent *mc, struct _CamelException *ex)
{
    return camel_store_get_folder(mc->priv->local_store, "Inbox", 0, ex);
}

extern struct _CamelSession *session;

char *em_uri_from_camel(const char *curi)
{
    CamelURL *curl;
    EAccount *account;
    const char *uid, *path;
    char *euri;
    CamelProvider *provider;

    provider = camel_session_get_provider(session, curi, NULL);
    if (provider == NULL)
        return g_strdup(curi);

    curl = camel_url_new(curi, NULL);
    if (curl == NULL)
        return g_strdup(curi);

    account = mail_config_get_account_by_source_url(curi);
    uid = (account == NULL)?"local@local":account->uid;
    path = (provider->url_flags & CAMEL_URL_FRAGMENT_IS_PATH)?curl->fragment:curl->path;
    if (path[0] == '/')
        path++;
    euri = g_strdup_printf("email://%s/%s", uid, path);
    
    d(printf("em uri from camel '%s' -> '%s'\n", curi, euri));
    
    return euri;
}

char *em_uri_to_camel(const char *euri)
{
    EAccountList *accounts;
    const EAccount *account;
    EAccountService *service;
    CamelProvider *provider;
    CamelURL *eurl, *curl;
    char *uid, *curi;

    eurl = camel_url_new(euri, NULL);
    if (eurl == NULL)
        return g_strdup(euri);

    if (strcmp(eurl->protocol, "email") != 0) {
        camel_url_free(eurl);
        return g_strdup(euri);
    }

    g_assert(eurl->host != NULL);

    if (eurl->user != NULL) {
        if (strcmp(eurl->user, "local") == 0 && strcmp(eurl->host, "local") == 0) {
            curi = g_strdup_printf("mbox:%s/.evolution/mail/local#%s", g_get_home_dir(), eurl->path[0]=='/'?eurl->path+1:eurl->path);
            camel_url_free(eurl);
            return curi;
        }

        uid = g_strdup_printf("%s@%s", eurl->user, eurl->host);
    } else {
        uid = g_strdup(eurl->host);
    }

    accounts = mail_config_get_accounts();
    account = e_account_list_find(accounts, E_ACCOUNT_FIND_UID, uid);
    g_free(uid);

    if (account == NULL) {
        camel_url_free(eurl);
        return g_strdup(euri);
    }

    service = account->source;
    provider = camel_session_get_provider(session, service->url, NULL);

    curl = camel_url_new(service->url, NULL);
    if (provider->url_flags & CAMEL_URL_FRAGMENT_IS_PATH)
        camel_url_set_fragment(curl, eurl->path[0]=='/'?eurl->path+1:eurl->path);
    else
        camel_url_set_path(curl, eurl->path);

    curi = camel_url_to_string(curl, 0);

    camel_url_free(eurl);
    camel_url_free(curl);

    d(printf("em uri to camel '%s' -> '%s'\n", euri, curi));

    return curi;
}


CamelFolder *
mail_component_get_folder_from_evomail_uri (MailComponent *component,
                        guint32 flags,
                        const char *evomail_uri,
                        CamelException *ex)
{
    CamelException local_ex;
    EAccountList *accounts;
    EIterator *iter;
    const char *p;
    const char *q;
    const char *folder_name;
    char *uid;

    camel_exception_init (&local_ex);

    if (strncmp (evomail_uri, "evomail:", 8) != 0)
        return NULL;

    p = evomail_uri + 8;
    while (*p == '/')
        p ++;

    q = strchr (p, '/');
    if (q == NULL)
        return NULL;

    uid = g_strndup (p, q - p);
    folder_name = q + 1;

    /* since we have no explicit account for 'local' folders, make one up */
    if (strcmp(uid, "local") == 0) {
        g_free(uid);
        return camel_store_get_folder(component->priv->local_store, folder_name, flags, ex);
    }

    accounts = mail_config_get_accounts ();
    iter = e_list_get_iterator ((EList *) accounts);
    while (e_iterator_is_valid (iter)) {
        EAccount *account = (EAccount *) e_iterator_get (iter);
        EAccountService *service = account->source;
        CamelProvider *provider;
        CamelStore *store;

        if (strcmp (account->uid, uid) != 0)
            continue;

        provider = camel_session_get_provider (session, service->url, &local_ex);
        if (provider == NULL)
            goto fail;

        store = (CamelStore *) camel_session_get_service (session, service->url, CAMEL_PROVIDER_STORE, &local_ex);
        if (store == NULL)
            goto fail;

        g_free (uid);
        return camel_store_get_folder (store, folder_name, flags, ex);
    }

 fail:
    camel_exception_clear (&local_ex);
    g_free (uid);
    return NULL;
}


char *
mail_component_evomail_uri_from_folder (MailComponent *component,
                    CamelFolder *folder)
{
    CamelStore *store = camel_folder_get_parent_store (folder);
    EAccount *account;
    char *service_url;
    char *evomail_uri;
    const char *uid;

    if (store == NULL)
        return NULL;

    service_url = camel_service_get_url (CAMEL_SERVICE (store));
    account = mail_config_get_account_by_source_url (service_url);

    if (account == NULL) {
        /* since we have no explicit account for 'local' folders, make one up */
        /* TODO: check the folder is really a local one, folder->parent_store == local_store? */
        uid = "local";
        /*g_free (service_url);
        return NULL;*/
    } else {
        uid = account->uid;
    }

    evomail_uri = g_strconcat ("evomail:///", uid, "/", camel_folder_get_full_name (folder), NULL);
    g_free (service_url);

    return evomail_uri;
}


BONOBO_TYPE_FUNC_FULL (MailComponent, GNOME_Evolution_Component, PARENT_TYPE, mail_component)