path: root/mail/mail-send-recv.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/>
 *
 *
 * Authors:
 *      Michael Zucchi <NotZed@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include <stdio.h>
#include <string.h>

#include <glib/gi18n.h>

#include <shell/e-shell.h>
#include <e-util/e-util.h>

#include <libemail-utils/mail-mt.h>

/* This is our hack, not part of libcamel. */
#include <libemail-engine/camel-null-store.h>

#include <libemail-engine/e-mail-folder-utils.h>
#include <libemail-engine/e-mail-session.h>
#include <libemail-engine/mail-folder-cache.h>
#include <libemail-engine/mail-ops.h>
#include <libemail-engine/mail-tools.h>

#include "e-mail-account-store.h"
#include "e-mail-ui-session.h"
#include "em-event.h"
#include "em-filter-rule.h"
#include "em-utils.h"
#include "mail-send-recv.h"

#define d(x)

/* ms between status updates to the gui */
#define STATUS_TIMEOUT (250)

/* pseudo-uri to key the send task on */
#define SEND_URI_KEY "send-task:"

/* send/receive email */

/* ********************************************************************** */
/*  This stuff below is independent of the stuff above */

/* this stuff is used to keep track of which folders filters have accessed, and
 * what not. the thaw/refreeze thing doesn't really seem to work though */
struct _folder_info {
    gchar *uri;
    CamelFolder *folder;
    time_t update;

    /* How many times updated, to slow it
     * down as we go, if we have lots. */
    gint count;
};

struct _send_data {
    GList *infos;

    GtkDialog *gd;
    gint cancelled;

    /* Since we're never asked to update
     * this one, do it ourselves. */
    CamelFolder *inbox;
    time_t inbox_update;

    GMutex *lock;
    GHashTable *folders;

    GHashTable *active; /* send_info's by uri */
};

typedef enum {
    SEND_RECEIVE,       /* receiver */
    SEND_SEND,      /* sender */
    SEND_UPDATE,        /* imap-like 'just update folder info' */
    SEND_INVALID
} send_info_t;

typedef enum {
    SEND_ACTIVE,
    SEND_CANCELLED,
    SEND_COMPLETE
} send_state_t;

struct _send_info {
    send_info_t type;       /* 0 = fetch, 1 = send */
    GCancellable *cancellable;
    CamelSession *session;
    CamelService *service;
    gboolean keep_on_server;
    send_state_t state;
    GtkWidget *progress_bar;
    GtkWidget *cancel_button;
    GtkWidget *status_label;

    gint again;     /* need to run send again */

    gint timeout_id;
    gchar *what;
    gint pc;

    GtkWidget *send_account_label;
    gchar *send_url;

    /*time_t update;*/
    struct _send_data *data;
};

static CamelFolder *
        receive_get_folder      (CamelFilterDriver *d,
                         const gchar *uri,
                         gpointer data,
                         GError **error);
static void send_done (gpointer data);

static struct _send_data *send_data = NULL;
static GtkWidget *send_recv_dialog = NULL;

static void
free_folder_info (struct _folder_info *info)
{
    /*camel_folder_thaw (info->folder); */
    mail_sync_folder (info->folder, NULL, NULL);
    g_object_unref (info->folder);
    g_free (info->uri);
    g_free (info);
}

static void
free_send_info (struct _send_info *info)
{
    if (info->cancellable != NULL)
        g_object_unref (info->cancellable);
    if (info->session != NULL)
        g_object_unref (info->session);
    if (info->service != NULL)
        g_object_unref (info->service);
    if (info->timeout_id != 0)
        g_source_remove (info->timeout_id);
    g_free (info->what);
    g_free (info->send_url);
    g_free (info);
}

static struct _send_data *
setup_send_data (EMailSession *session)
{
    struct _send_data *data;

    if (send_data == NULL) {
        send_data = data = g_malloc0 (sizeof (*data));
        data->lock = g_mutex_new ();
        data->folders = g_hash_table_new_full (
            g_str_hash, g_str_equal,
            (GDestroyNotify) NULL,
            (GDestroyNotify) free_folder_info);
        data->inbox =
            e_mail_session_get_local_folder (
            session, E_MAIL_LOCAL_FOLDER_LOCAL_INBOX);
        g_object_ref (data->inbox);
        data->active = g_hash_table_new_full (
            g_str_hash, g_str_equal,
            (GDestroyNotify) g_free,
            (GDestroyNotify) free_send_info);
    }

    return send_data;
}

static void
receive_cancel (GtkButton *button,
                struct _send_info *info)
{
    if (info->state == SEND_ACTIVE) {
        g_cancellable_cancel (info->cancellable);
        if (info->status_label)
            gtk_label_set_text (
                GTK_LABEL (info->status_label),
                _("Canceling..."));
        info->state = SEND_CANCELLED;
    }
    if (info->cancel_button)
        gtk_widget_set_sensitive (info->cancel_button, FALSE);
}

static void
free_send_data (void)
{
    struct _send_data *data = send_data;

    g_return_if_fail (g_hash_table_size (data->active) == 0);

    if (data->inbox) {
        mail_sync_folder (data->inbox, NULL, NULL);
        /*camel_folder_thaw (data->inbox);      */
        g_object_unref (data->inbox);
    }

    g_list_free (data->infos);
    g_hash_table_destroy (data->active);
    g_hash_table_destroy (data->folders);
    g_mutex_free (data->lock);
    g_free (data);
    send_data = NULL;
}

static void
cancel_send_info (gpointer key,
                  struct _send_info *info,
                  gpointer data)
{
    receive_cancel (GTK_BUTTON (info->cancel_button), info);
}

static void
hide_send_info (gpointer key,
                struct _send_info *info,
                gpointer data)
{
    info->cancel_button = NULL;
    info->progress_bar = NULL;
    info->status_label = NULL;

    if (info->timeout_id != 0) {
        g_source_remove (info->timeout_id);
        info->timeout_id = 0;
    }
}

static void
dialog_destroy_cb (struct _send_data *data,
                   GObject *deadbeef)
{
    g_hash_table_foreach (data->active, (GHFunc) hide_send_info, NULL);
    data->gd = NULL;
    send_recv_dialog = NULL;
}

static void
dialog_response (GtkDialog *gd,
                 gint button,
                 struct _send_data *data)
{
    switch (button) {
    case GTK_RESPONSE_CANCEL:
        d(printf("cancelled whole thing\n"));
        if (!data->cancelled) {
            data->cancelled = TRUE;
            g_hash_table_foreach (data->active, (GHFunc) cancel_send_info, NULL);
        }
        gtk_dialog_set_response_sensitive (gd, GTK_RESPONSE_CANCEL, FALSE);
        break;
    default:
        d(printf("hiding dialog\n"));
        g_hash_table_foreach (data->active, (GHFunc) hide_send_info, NULL);
        data->gd = NULL;
        /*gtk_widget_destroy((GtkWidget *)gd);*/
        break;
    }
}

static GStaticMutex status_lock = G_STATIC_MUTEX_INIT;
static gchar *format_url (CamelService *service);

static gint
operation_status_timeout (gpointer data)
{
    struct _send_info *info = data;

    if (info->progress_bar) {
        g_static_mutex_lock (&status_lock);

        gtk_progress_bar_set_fraction (
            GTK_PROGRESS_BAR (info->progress_bar),
            info->pc / 100.0);
        if (info->what)
            gtk_label_set_text (
                GTK_LABEL (info->status_label),
                info->what);
        if (info->service != NULL && info->send_account_label) {
            gchar *tmp = format_url (info->service);

            gtk_label_set_markup (
                GTK_LABEL (info->send_account_label), tmp);

            g_free (tmp);
        }

        g_static_mutex_unlock (&status_lock);

        return TRUE;
    }

    return FALSE;
}

static void
set_send_status (struct _send_info *info,
                 const gchar *desc,
                 gint pc)
{
    g_static_mutex_lock (&status_lock);

    g_free (info->what);
    info->what = g_strdup (desc);
    info->pc = pc;

    g_static_mutex_unlock (&status_lock);
}

static void
set_transport_service (struct _send_info *info,
                       const gchar *transport_uid)
{
    CamelService *service;

    g_static_mutex_lock (&status_lock);

    service = camel_session_get_service (info->session, transport_uid);

    if (CAMEL_IS_TRANSPORT (service)) {
        if (info->service != NULL)
            g_object_unref (info->service);
        info->service = g_object_ref (service);
    }

    g_static_mutex_unlock (&status_lock);
}

/* for camel operation status */
static void
operation_status (CamelOperation *op,
                  const gchar *what,
                  gint pc,
                  struct _send_info *info)
{
    set_send_status (info, what, pc);
}

static gchar *
format_url (CamelService *service)
{
    CamelProvider *provider;
    CamelSettings *settings;
    gchar *service_name = NULL;
    const gchar *display_name;
    const gchar *host = NULL;
    const gchar *path = NULL;
    gchar *pretty_url = NULL;

    provider = camel_service_get_provider (service);
    settings = camel_service_get_settings (service);
    display_name = camel_service_get_display_name (service);

    if (CAMEL_IS_NETWORK_SETTINGS (settings))
        host = camel_network_settings_get_host (
            CAMEL_NETWORK_SETTINGS (settings));

    if (CAMEL_IS_LOCAL_SETTINGS (settings))
        path = camel_local_settings_get_path (
            CAMEL_LOCAL_SETTINGS (settings));

    g_return_val_if_fail (provider != NULL, NULL);

    /* This should never happen, but if the service has no
     * display name, fall back to the generic service name. */
    if (display_name == NULL || *display_name == '\0') {
        service_name = camel_service_get_name (service, TRUE);
        display_name = service_name;
    }

    if (host != NULL && *host != '\0')
        pretty_url = g_markup_printf_escaped (
            "<b>%s</b>: %s", display_name, host);
    else if (path != NULL)
        pretty_url = g_markup_printf_escaped (
            "<b>%s</b>: %s", display_name, path);
    else
        pretty_url = g_markup_printf_escaped (
            "<b>%s</b>", display_name);

    g_free (service_name);

    return pretty_url;
}

static send_info_t
get_receive_type (CamelService *service)
{
    CamelURL *url;
    CamelProvider *provider;
    const gchar *uid;
    gboolean is_local_delivery;

    /* Disregard CamelNullStores. */
    if (CAMEL_IS_NULL_STORE (service))
        return SEND_INVALID;

    url = camel_service_new_camel_url (service);
    is_local_delivery = em_utils_is_local_delivery_mbox_file (url);
    camel_url_free (url);

    /* mbox pointing to a file is a 'Local delivery'
     * source which requires special processing. */
    if (is_local_delivery)
        return SEND_RECEIVE;

    provider = camel_service_get_provider (service);

    if (provider == NULL)
        return SEND_INVALID;

    /* skip some well-known services */
    uid = camel_service_get_uid (service);
    if (g_strcmp0 (uid, E_MAIL_SESSION_LOCAL_UID) == 0)
        return SEND_INVALID;
    if (g_strcmp0 (uid, E_MAIL_SESSION_VFOLDER_UID) == 0)
        return SEND_INVALID;

    if (provider->object_types[CAMEL_PROVIDER_STORE]) {
        if (provider->flags & CAMEL_PROVIDER_IS_STORAGE)
            return SEND_UPDATE;
        else
            return SEND_RECEIVE;
    }

    if (provider->object_types[CAMEL_PROVIDER_TRANSPORT])
        return SEND_SEND;

    return SEND_INVALID;
}

static gboolean
get_keep_on_server (CamelService *service)
{
    GObjectClass *class;
    CamelSettings *settings;
    gboolean keep_on_server = FALSE;

    settings = camel_service_get_settings (service);
    class = G_OBJECT_GET_CLASS (settings);

    /* XXX This is a POP3-specific setting. */
    if (g_object_class_find_property (class, "keep-on-server") != NULL)
        g_object_get (
            settings, "keep-on-server",
            &keep_on_server, NULL);

    return keep_on_server;
}

static struct _send_data *
build_dialog (GtkWindow *parent,
              EMailSession *session,
              CamelFolder *outbox,
              CamelService *transport,
              gboolean allow_send)
{
    GtkDialog *gd;
    GtkWidget *wgrid;
    GtkGrid *grid;
    gint row;
    GList *list = NULL;
    struct _send_data *data;
    GtkWidget *container;
    GtkWidget *send_icon;
    GtkWidget *recv_icon;
    GtkWidget *scrolled_window;
    GtkWidget *label;
    GtkWidget *status_label;
    GtkWidget *progress_bar;
    GtkWidget *cancel_button;
    EMailAccountStore *account_store;
    struct _send_info *info;
    gchar *pretty_url;
    EMEventTargetSendReceive *target;
    GQueue queue = G_QUEUE_INIT;

    account_store = e_mail_ui_session_get_account_store (E_MAIL_UI_SESSION (session));

    send_recv_dialog = gtk_dialog_new ();

    gd = GTK_DIALOG (send_recv_dialog);
    gtk_window_set_modal (GTK_WINDOW (send_recv_dialog), FALSE);
    gtk_window_set_icon_name (GTK_WINDOW (gd), "mail-send-receive");
    gtk_window_set_default_size (GTK_WINDOW (gd), 600, 200);
    gtk_window_set_title (GTK_WINDOW (gd), _("Send & Receive Mail"));
    gtk_window_set_transient_for (GTK_WINDOW (gd), parent);

    e_restore_window (
        GTK_WINDOW (gd),
        "/org/gnome/evolution/mail/send-recv-window/",
        E_RESTORE_WINDOW_SIZE);

    gtk_widget_ensure_style ((GtkWidget *) gd);

    container = gtk_dialog_get_action_area (gd);
    gtk_container_set_border_width (GTK_CONTAINER (container), 6);

    container = gtk_dialog_get_content_area (gd);
    gtk_container_set_border_width (GTK_CONTAINER (container), 0);

    cancel_button = gtk_button_new_with_mnemonic (_("Cancel _All"));
    gtk_button_set_image (
        GTK_BUTTON (cancel_button),
        gtk_image_new_from_stock (
            GTK_STOCK_CANCEL, GTK_ICON_SIZE_BUTTON));
    gtk_widget_show (cancel_button);
    gtk_dialog_add_action_widget (gd, cancel_button, GTK_RESPONSE_CANCEL);

    wgrid = gtk_grid_new ();
    grid = GTK_GRID (wgrid);
    gtk_container_set_border_width (GTK_CONTAINER (grid), 6);
    gtk_grid_set_row_spacing (grid, 6);
    gtk_grid_set_column_spacing (grid, 6);

    scrolled_window = gtk_scrolled_window_new (NULL, NULL);
    gtk_container_set_border_width (
        GTK_CONTAINER (scrolled_window), 6);
    gtk_scrolled_window_set_policy (
        GTK_SCROLLED_WINDOW (scrolled_window),
        GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
    gtk_widget_set_size_request (scrolled_window, 50, 50);

    container = gtk_dialog_get_content_area (gd);
    gtk_scrolled_window_add_with_viewport (
        GTK_SCROLLED_WINDOW (scrolled_window), wgrid);
    gtk_box_pack_start (
        GTK_BOX (container), scrolled_window, TRUE, TRUE, 0);
    gtk_widget_show (scrolled_window);

    /* must bet setup after send_recv_dialog as it may re-trigger send-recv button */
    data = setup_send_data (session);

    row = 0;
    e_mail_account_store_queue_enabled_services (account_store, &queue);
    while (!g_queue_is_empty (&queue)) {
        CamelService *service;
        const gchar *uid;

        service = g_queue_pop_head (&queue);
        uid = camel_service_get_uid (service);

        /* see if we have an outstanding download active */
        info = g_hash_table_lookup (data->active, uid);
        if (info == NULL) {
            send_info_t type = SEND_INVALID;

            type = get_receive_type (service);

            if (type == SEND_INVALID || type == SEND_SEND)
                continue;

            info = g_malloc0 (sizeof (*info));
            info->type = type;
            info->session = g_object_ref (session);
            info->service = g_object_ref (service);
            info->keep_on_server = get_keep_on_server (service);
            info->cancellable = camel_operation_new ();
            info->state = allow_send ? SEND_ACTIVE : SEND_COMPLETE;
            info->timeout_id = g_timeout_add (
                STATUS_TIMEOUT, operation_status_timeout, info);

            g_signal_connect (
                info->cancellable, "status",
                G_CALLBACK (operation_status), info);

            g_hash_table_insert (
                data->active, g_strdup (uid), info);
            list = g_list_prepend (list, info);

        } else if (info->progress_bar != NULL) {
            /* incase we get the same source pop up again */
            continue;

        } else if (info->timeout_id == 0)
            info->timeout_id = g_timeout_add (
                STATUS_TIMEOUT, operation_status_timeout, info);

        recv_icon = gtk_image_new_from_icon_name (
            "mail-inbox", GTK_ICON_SIZE_LARGE_TOOLBAR);
        pretty_url = format_url (service);
        label = gtk_label_new (NULL);
        gtk_label_set_ellipsize (
            GTK_LABEL (label), PANGO_ELLIPSIZE_END);
        gtk_label_set_markup (GTK_LABEL (label), pretty_url);
        g_free (pretty_url);

        progress_bar = gtk_progress_bar_new ();

        cancel_button = gtk_button_new_from_stock (GTK_STOCK_CANCEL);

        status_label = gtk_label_new (
            (info->type == SEND_UPDATE) ?
            _("Updating...") : _("Waiting..."));
        gtk_label_set_ellipsize (
            GTK_LABEL (status_label), PANGO_ELLIPSIZE_END);

        /* g_object_set(data->label, "bold", TRUE, NULL); */
        gtk_misc_set_alignment (GTK_MISC (label), 0, .5);
        gtk_misc_set_alignment (GTK_MISC (status_label), 0, .5);

        gtk_widget_set_hexpand (label, TRUE);
        gtk_widget_set_halign (label, GTK_ALIGN_FILL);

        gtk_widget_set_hexpand (status_label, TRUE);
        gtk_widget_set_halign (status_label, GTK_ALIGN_FILL);

        gtk_grid_attach (grid, recv_icon, 0, row, 1, 2);
        gtk_grid_attach (grid, label, 1, row, 1, 1);
        gtk_grid_attach (grid, progress_bar, 2, row, 1, 1);
        gtk_grid_attach (grid, cancel_button, 3, row, 1, 1);
        gtk_grid_attach (grid, status_label, 1, row + 1, 2, 1);

        info->progress_bar = progress_bar;
        info->status_label = status_label;
        info->cancel_button = cancel_button;
        info->data = data;

        g_signal_connect (
            cancel_button, "clicked",
            G_CALLBACK (receive_cancel), info);

        row = row + 2;
    }

    /* we also need gd during emition to be able to catch Cancel All */
    data->gd = gd;
    target = em_event_target_new_send_receive (
        em_event_peek (), wgrid, data, row, EM_EVENT_SEND_RECEIVE);
    e_event_emit (
        (EEvent *) em_event_peek (), "mail.sendreceive",
        (EEventTarget *) target);

    /* Skip displaying the SMTP row if we've got no outbox,
     * outgoing account or unsent mails. */
    if (allow_send && outbox && CAMEL_IS_TRANSPORT (transport)
     && (camel_folder_get_message_count (outbox) -
        camel_folder_get_deleted_message_count (outbox)) != 0) {

        info = g_hash_table_lookup (data->active, SEND_URI_KEY);
        if (info == NULL) {
            info = g_malloc0 (sizeof (*info));
            info->type = SEND_SEND;
            info->session = g_object_ref (session);
            info->service = g_object_ref (transport);
            info->keep_on_server = FALSE;
            info->cancellable = camel_operation_new ();
            info->state = SEND_ACTIVE;
            info->timeout_id = g_timeout_add (
                STATUS_TIMEOUT, operation_status_timeout, info);

            g_signal_connect (
                info->cancellable, "status",
                G_CALLBACK (operation_status), info);

            g_hash_table_insert (
                data->active, g_strdup (SEND_URI_KEY), info);
            list = g_list_prepend (list, info);
        } else if (info->timeout_id == 0)
            info->timeout_id = g_timeout_add (
                STATUS_TIMEOUT, operation_status_timeout, info);

        send_icon = gtk_image_new_from_icon_name (
            "mail-outbox", GTK_ICON_SIZE_LARGE_TOOLBAR);
        pretty_url = format_url (transport);
        label = gtk_label_new (NULL);
        gtk_label_set_ellipsize (
            GTK_LABEL (label), PANGO_ELLIPSIZE_END);
        gtk_label_set_markup (GTK_LABEL (label), pretty_url);

        g_free (pretty_url);

        progress_bar = gtk_progress_bar_new ();
        cancel_button = gtk_button_new_from_stock (GTK_STOCK_CANCEL);

        status_label = gtk_label_new (_("Waiting..."));
        gtk_label_set_ellipsize (
            GTK_LABEL (status_label), PANGO_ELLIPSIZE_END);

        gtk_misc_set_alignment (GTK_MISC (label), 0, .5);
        gtk_misc_set_alignment (GTK_MISC (status_label), 0, .5);

        gtk_widget_set_hexpand (label, TRUE);
        gtk_widget_set_halign (label, GTK_ALIGN_FILL);

        gtk_widget_set_hexpand (status_label, TRUE);
        gtk_widget_set_halign (status_label, GTK_ALIGN_FILL);

        gtk_grid_attach (grid, send_icon, 0, row, 1, 2);
        gtk_grid_attach (grid, label, 1, row, 1, 1);
        gtk_grid_attach (grid, progress_bar, 2, row, 1, 1);
        gtk_grid_attach (grid, cancel_button, 3, row, 1, 1);
        gtk_grid_attach (grid, status_label, 1, row + 1, 2, 1);

        info->progress_bar = progress_bar;
        info->cancel_button = cancel_button;
        info->data = data;
        info->status_label = status_label;
        info->send_account_label = label;

        g_signal_connect (
            cancel_button, "clicked",
            G_CALLBACK (receive_cancel), info);
    }

    gtk_widget_show_all (wgrid);

    if (parent != NULL)
        gtk_widget_show (GTK_WIDGET (gd));

    g_signal_connect (
        gd, "response",
        G_CALLBACK (dialog_response), data);

    g_object_weak_ref ((GObject *) gd, (GWeakNotify) dialog_destroy_cb, data);

    data->infos = list;

    return data;
}

static void
update_folders (gchar *uri,
                struct _folder_info *info,
                gpointer data)
{
    time_t now = *((time_t *) data);

    d(printf("checking update for folder: %s\n", info->uri));

    /* let it flow through to the folders every 10 seconds */
    /* we back off slowly as we progress */
    if (now > info->update + 10 + info->count *5) {
        d(printf("upating a folder: %s\n", info->uri));
        /*camel_folder_thaw(info->folder);
          camel_folder_freeze (info->folder);*/
        info->update = now;
        info->count++;
    }
}

static void
receive_status (CamelFilterDriver *driver,
                enum camel_filter_status_t status,
                gint pc,
                const gchar *desc,
                gpointer data)
{
    struct _send_info *info = data;
    time_t now = time (NULL);

    /* let it flow through to the folder, every now and then too? */
    g_hash_table_foreach (info->data->folders, (GHFunc) update_folders, &now);

    if (info->data->inbox && now > info->data->inbox_update + 20) {
        d(printf("updating inbox too\n"));
        /* this doesn't seem to work right :( */
        /*camel_folder_thaw(info->data->inbox);
          camel_folder_freeze (info->data->inbox);*/
        info->data->inbox_update = now;
    }

    /* we just pile them onto the port, assuming it can handle it.
     * We could also have a receiver port and see if they've been processed
     * yet, so if this is necessary its not too hard to add */
    /* the mail_gui_port receiver will free everything for us */
    switch (status) {
    case CAMEL_FILTER_STATUS_START:
    case CAMEL_FILTER_STATUS_END:
        set_send_status (info, desc, pc);
        break;
    case CAMEL_FILTER_STATUS_ACTION:
        set_transport_service (info, desc);
        break;
    default:
        break;
    }
}

/* when receive/send is complete */
static void
receive_done (gint still_more,
              gpointer data)
{
    struct _send_info *info = data;
    const gchar *uid;

    uid = camel_service_get_uid (info->service);
    g_return_if_fail (uid != NULL);

    /* if we've been called to run again - run again */
    if (info->type == SEND_SEND && info->state == SEND_ACTIVE && info->again) {
        CamelFolder *local_outbox;

        local_outbox =
            e_mail_session_get_local_folder (
            E_MAIL_SESSION (info->session),
            E_MAIL_LOCAL_FOLDER_OUTBOX);

        g_return_if_fail (CAMEL_IS_TRANSPORT (info->service));

        info->again = 0;
        mail_send_queue (
            E_MAIL_SESSION (info->session),
            local_outbox,
            CAMEL_TRANSPORT (info->service),
            E_FILTER_SOURCE_OUTGOING,
            info->cancellable,
            receive_get_folder, info,
            receive_status, info,
            send_done, info);
        return;
    }

    if (info->progress_bar) {
        const gchar *text;

        gtk_progress_bar_set_fraction (
            GTK_PROGRESS_BAR (info->progress_bar), 1.0);

        if (info->state == SEND_CANCELLED)
            text = _("Canceled.");
        else {
            text = _("Complete.");
            info->state = SEND_COMPLETE;
        }

        gtk_label_set_text (GTK_LABEL (info->status_label), text);
    }

    if (info->cancel_button)
        gtk_widget_set_sensitive (info->cancel_button, FALSE);

    /* remove/free this active download */
    d(printf("%s: freeing info %p\n", G_STRFUNC, info));
    if (info->type == SEND_SEND)
        g_hash_table_steal (info->data->active, SEND_URI_KEY);
    else
        g_hash_table_steal (info->data->active, uid);
    info->data->infos = g_list_remove (info->data->infos, info);

    if (g_hash_table_size (info->data->active) == 0) {
        if (info->data->gd)
            gtk_widget_destroy ((GtkWidget *) info->data->gd);
        free_send_data ();
    }

    free_send_info (info);
}

static void
send_done (gpointer data)
{
    receive_done (-1, data);
}
/* although we dont do anythign smart here yet, there is no need for this interface to
 * be available to anyone else.
 * This can also be used to hook into which folders are being updated, and occasionally
 * let them refresh */
static CamelFolder *
receive_get_folder (CamelFilterDriver *d,
                    const gchar *uri,
                    gpointer data,
                    GError **error)
{
    struct _send_info *info = data;
    CamelFolder *folder;
    struct _folder_info *oldinfo;
    gpointer oldkey, oldinfoptr;

    g_mutex_lock (info->data->lock);
    oldinfo = g_hash_table_lookup (info->data->folders, uri);
    g_mutex_unlock (info->data->lock);

    if (oldinfo) {
        g_object_ref (oldinfo->folder);
        return oldinfo->folder;
    }

    /* FIXME Not passing a GCancellable here. */
    folder = e_mail_session_uri_to_folder_sync (
        E_MAIL_SESSION (info->session), uri, 0, NULL, error);
    if (!folder)
        return NULL;

    /* we recheck that the folder hasn't snuck in while we were loading it... */
    /* and we assume the newer one is the same, but unref the old one anyway */
    g_mutex_lock (info->data->lock);

    if (g_hash_table_lookup_extended (
            info->data->folders, uri, &oldkey, &oldinfoptr)) {
        oldinfo = (struct _folder_info *) oldinfoptr;
        g_object_unref (oldinfo->folder);
        oldinfo->folder = folder;
    } else {
        oldinfo = g_malloc0 (sizeof (*oldinfo));
        oldinfo->folder = folder;
        oldinfo->uri = g_strdup (uri);
        g_hash_table_insert (info->data->folders, oldinfo->uri, oldinfo);
    }

    g_object_ref (folder);

    g_mutex_unlock (info->data->lock);

    return folder;
}

/* ********************************************************************** */

static void
get_folders (CamelStore *store,
             GPtrArray *folders,
             CamelFolderInfo *info)
{
    while (info) {
        if (camel_store_can_refresh_folder (store, info, NULL)) {
            if ((info->flags & CAMEL_FOLDER_NOSELECT) == 0) {
                gchar *folder_uri;

                folder_uri = e_mail_folder_uri_build (
                    store, info->full_name);
                g_ptr_array_add (folders, folder_uri);
            }
        }

        get_folders (store, folders, info->child);
        info = info->next;
    }
}

static void
main_op_cancelled_cb (GCancellable *main_op,
                      GCancellable *refresh_op)
{
    g_cancellable_cancel (refresh_op);
}

struct _refresh_folders_msg {
    MailMsg base;

    struct _send_info *info;
    GPtrArray *folders;
    CamelStore *store;
    CamelFolderInfo *finfo;
};

static gchar *
refresh_folders_desc (struct _refresh_folders_msg *m)
{
    return g_strdup_printf(_("Checking for new mail"));
}

static void
refresh_folders_exec (struct _refresh_folders_msg *m,
                      GCancellable *cancellable,
                      GError **error)
{
    CamelFolder *folder;
    gint i;
    GError *local_error = NULL;
    gulong handler_id = 0;

    if (cancellable)
        handler_id = g_signal_connect (
            m->info->cancellable, "cancelled",
            G_CALLBACK (main_op_cancelled_cb), cancellable);

    get_folders (m->store, m->folders, m->finfo);

    camel_operation_push_message (m->info->cancellable, _("Updating..."));

    for (i = 0; i < m->folders->len; i++) {
        folder = e_mail_session_uri_to_folder_sync (
            E_MAIL_SESSION (m->info->session),
            m->folders->pdata[i], 0,
            cancellable, &local_error);
        if (folder) {
            if (camel_folder_synchronize_sync (folder, FALSE, cancellable, &local_error))
                camel_folder_refresh_info_sync (folder, cancellable, &local_error);
            g_object_unref (folder);
        }

        if (local_error != NULL) {
            if (!g_error_matches (local_error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
                g_warning ("Failed to refresh folders: %s", local_error->message);
            g_clear_error (&local_error);
        }

        if (g_cancellable_is_cancelled (m->info->cancellable) ||
            g_cancellable_is_cancelled (cancellable))
            break;

        if (m->info->state != SEND_CANCELLED)
            camel_operation_progress (
                m->info->cancellable, 100 * i / m->folders->len);
    }

    camel_operation_pop_message (m->info->cancellable);

    if (cancellable)
        g_signal_handler_disconnect (m->info->cancellable, handler_id);
}

static void
refresh_folders_done (struct _refresh_folders_msg *m)
{
    receive_done (-1, m->info);
}

static void
refresh_folders_free (struct _refresh_folders_msg *m)
{
    gint i;

    for (i = 0; i < m->folders->len; i++)
        g_free (m->folders->pdata[i]);
    g_ptr_array_free (m->folders, TRUE);

    camel_store_free_folder_info (m->store, m->finfo);
    g_object_unref (m->store);
}

static MailMsgInfo refresh_folders_info = {
    sizeof (struct _refresh_folders_msg),
    (MailMsgDescFunc) refresh_folders_desc,
    (MailMsgExecFunc) refresh_folders_exec,
    (MailMsgDoneFunc) refresh_folders_done,
    (MailMsgFreeFunc) refresh_folders_free
};

static gboolean
receive_update_got_folderinfo (MailFolderCache *folder_cache,
                               CamelStore *store,
                               CamelFolderInfo *info,
                               gpointer data)
{
    if (info) {
        GPtrArray *folders = g_ptr_array_new ();
        struct _refresh_folders_msg *m;
        struct _send_info *sinfo = data;

        m = mail_msg_new (&refresh_folders_info);
        m->store = store;
        g_object_ref (store);
        m->folders = folders;
        m->info = sinfo;
        m->finfo = info;

        mail_msg_unordered_push (m);

        /* do not free folder info, we will free it later */
        return FALSE;
    } else {
        receive_done (-1, data);
    }

    return TRUE;
}

static void
receive_update_got_store (CamelStore *store,
                          struct _send_info *info)
{
    MailFolderCache *folder_cache;

    folder_cache = e_mail_session_get_folder_cache (
        E_MAIL_SESSION (info->session));

    if (store != NULL) {
        mail_folder_cache_note_store (
            folder_cache, store, info->cancellable,
            receive_update_got_folderinfo, info);
    } else {
        receive_done (-1, info);
    }
}

static CamelService *
get_default_transport (EMailSession *session)
{
    ESource *source;
    ESourceRegistry *registry;
    CamelService *service;
    const gchar *extension_name;
    const gchar *uid;

    registry = e_mail_session_get_registry (session);
    source = e_source_registry_ref_default_mail_identity (registry);

    if (source == NULL)
        return NULL;

    extension_name = E_SOURCE_EXTENSION_MAIL_SUBMISSION;
    if (e_source_has_extension (source, extension_name)) {
        ESourceMailSubmission *extension;
        gchar *uid;

        extension = e_source_get_extension (source, extension_name);
        uid = e_source_mail_submission_dup_transport_uid (extension);

        g_object_unref (source);
        source = e_source_registry_ref_source (registry, uid);

        g_free (uid);
    } else {
        g_object_unref (source);
        source = NULL;
    }

    if (source == NULL)
        return NULL;

    uid = e_source_get_uid (source);
    service = camel_session_get_service (CAMEL_SESSION (session), uid);

    g_object_unref (source);

    return service;
}

static GtkWidget *
send_receive (GtkWindow *parent,
              EMailSession *session,
              gboolean allow_send)
{
    CamelFolder *local_outbox;
    CamelService *transport;
    struct _send_data *data;
    GList *scan;

    if (send_recv_dialog != NULL) {
        if (parent != NULL && gtk_widget_get_realized (send_recv_dialog)) {
            gtk_window_present (GTK_WINDOW (send_recv_dialog));
        }
        return send_recv_dialog;
    }

    if (!camel_session_get_online (CAMEL_SESSION (session)))
        return send_recv_dialog;

    transport = get_default_transport (session);

    local_outbox =
        e_mail_session_get_local_folder (
        session, E_MAIL_LOCAL_FOLDER_OUTBOX);

    data = build_dialog (
        parent, session, local_outbox, transport, allow_send);

    for (scan = data->infos; scan != NULL; scan = scan->next) {
        struct _send_info *info = scan->data;

        if (!CAMEL_IS_SERVICE (info->service))
            continue;

        switch (info->type) {
        case SEND_RECEIVE:
            mail_fetch_mail (
                CAMEL_STORE (info->service),
                CAMEL_FETCH_OLD_MESSAGES, -1,
                E_FILTER_SOURCE_INCOMING,
                NULL, NULL, NULL,
                info->cancellable,
                receive_get_folder, info,
                receive_status, info,
                receive_done, info);
            break;
        case SEND_SEND:
            /* todo, store the folder in info? */
            mail_send_queue (
                session, local_outbox,
                CAMEL_TRANSPORT (info->service),
                E_FILTER_SOURCE_OUTGOING,
                info->cancellable,
                receive_get_folder, info,
                receive_status, info,
                send_done, info);
            break;
        case SEND_UPDATE:
            receive_update_got_store (
                CAMEL_STORE (info->service), info);
            break;
        default:
            break;
        }
    }

    return send_recv_dialog;
}

GtkWidget *
mail_send_receive (GtkWindow *parent,
                   EMailSession *session)
{
    return send_receive (parent, session, TRUE);
}

GtkWidget *
mail_receive (GtkWindow *parent,
              EMailSession *session)
{
    return send_receive (parent, session, FALSE);
}

/* We setup the download info's in a hashtable, if we later
 * need to build the gui, we insert them in to add them. */
void
mail_receive_service (CamelService *service)
{
    struct _send_info *info;
    struct _send_data *data;
    CamelSession *session;
    CamelFolder *local_outbox;
    const gchar *uid;
    send_info_t type = SEND_INVALID;

    g_return_if_fail (CAMEL_IS_SERVICE (service));

    uid = camel_service_get_uid (service);
    session = camel_service_get_session (service);

    data = setup_send_data (E_MAIL_SESSION (session));
    info = g_hash_table_lookup (data->active, uid);

    if (info != NULL)
        return;

    type = get_receive_type (service);

    if (type == SEND_INVALID || type == SEND_SEND)
        return;

    info = g_malloc0 (sizeof (*info));
    info->type = type;
    info->progress_bar = NULL;
    info->status_label = NULL;
    info->session = g_object_ref (session);
    info->service = g_object_ref (service);
    info->keep_on_server = get_keep_on_server (service);
    info->cancellable = camel_operation_new ();
    info->cancel_button = NULL;
    info->data = data;
    info->state = SEND_ACTIVE;
    info->timeout_id = 0;

    g_signal_connect (
        info->cancellable, "status",
        G_CALLBACK (operation_status), info);

    d(printf("Adding new info %p\n", info));

    g_hash_table_insert (data->active, g_strdup (uid), info);

    switch (info->type) {
    case SEND_RECEIVE:
        mail_fetch_mail (
            CAMEL_STORE (service),
            CAMEL_FETCH_OLD_MESSAGES, -1,
            E_FILTER_SOURCE_INCOMING,
            NULL, NULL, NULL,
            info->cancellable,
            receive_get_folder, info,
            receive_status, info,
            receive_done, info);
        break;
    case SEND_SEND:
        /* todo, store the folder in info? */
        local_outbox =
            e_mail_session_get_local_folder (
            E_MAIL_SESSION (session),
            E_MAIL_LOCAL_FOLDER_OUTBOX);
        mail_send_queue (
            E_MAIL_SESSION (session),
            local_outbox,
            CAMEL_TRANSPORT (service),
            E_FILTER_SOURCE_OUTGOING,
            info->cancellable,
            receive_get_folder, info,
            receive_status, info,
            send_done, info);
        break;
    case SEND_UPDATE:
        receive_update_got_store (CAMEL_STORE (service), info);
        break;
    default:
        g_return_if_reached ();
    }
}

void
mail_send (EMailSession *session)
{
    CamelFolder *local_outbox;
    CamelService *service;
    struct _send_info *info;
    struct _send_data *data;
    send_info_t type = SEND_INVALID;

    g_return_if_fail (E_IS_MAIL_SESSION (session));

    service = get_default_transport (session);
    if (service == NULL)
        return;

    data = setup_send_data (session);
    info = g_hash_table_lookup (data->active, SEND_URI_KEY);
    if (info != NULL) {
        info->again++;
        d(printf("send of %s still in progress\n", transport->url));
        return;
    }

    d(printf("starting non-interactive send of '%s'\n", transport->url));

    type = get_receive_type (service);

    if (type == SEND_INVALID)
        return;

    info = g_malloc0 (sizeof (*info));
    info->type = SEND_SEND;
    info->progress_bar = NULL;
    info->status_label = NULL;
    info->session = g_object_ref (session);
    info->service = g_object_ref (service);
    info->keep_on_server = FALSE;
    info->cancellable = NULL;
    info->cancel_button = NULL;
    info->data = data;
    info->state = SEND_ACTIVE;
    info->timeout_id = 0;

    d(printf("Adding new info %p\n", info));

    g_hash_table_insert (data->active, g_strdup (SEND_URI_KEY), info);

    /* todo, store the folder in info? */
    local_outbox =
        e_mail_session_get_local_folder (
        session, E_MAIL_LOCAL_FOLDER_OUTBOX);

    mail_send_queue (
        session, local_outbox,
        CAMEL_TRANSPORT (service),
        E_FILTER_SOURCE_OUTGOING,
        info->cancellable,
        receive_get_folder, info,
        receive_status, info,
        send_done, info);
}