path: root/mail/em-utils.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright 2003 Ximian, Inc. (www.ximian.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 Street #330, Boston, MA 02111-1307, USA.
 *
 */

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

#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <time.h>

#include <camel/camel-stream-fs.h>
#include <camel/camel-url-scanner.h>
#include <camel/camel-file-utils.h>

#include <filter/filter-editor.h>

#include "mail-component.h"
#include "mail-mt.h"
#include "mail-ops.h"
#include "mail-tools.h"
#include "mail-config.h"
#include "mail-config-druid.h"
#include "message-tag-followup.h"

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

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

#include "em-utils.h"
#include "em-composer-utils.h"
#include "em-format-quote.h"

static EAccount *guess_account (CamelMimeMessage *message, CamelFolder *folder);
static void emu_save_part_done (CamelMimePart *part, char *name, int done, void *data);

#define d(x)

/**
 * em_utils_prompt_user:
 * @parent: parent window
 * @def: default response
 * @promptkey: gconf key to check if we should prompt the user or not.
 * @fmt: prompt format
 * @Varargs: varargs
 *
 * Convenience function to query the user with a Yes/No dialog and a
 * "Don't show this dialog again" checkbox. If the user checks that
 * checkbox, then @promptkey is set to %FALSE, otherwise it is set to
 * %TRUE.
 *
 * Returns %TRUE if the user clicks Yes or %FALSE otherwise.
 **/
gboolean
em_utils_prompt_user(GtkWindow *parent, int def, const char *promptkey, const char *fmt, ...)
{
    GtkWidget *mbox, *check = NULL;
    va_list ap;
    int button;
    char *str;
    GConfClient *gconf = mail_config_get_gconf_client();

    if (promptkey
        && !gconf_client_get_bool(gconf, promptkey, NULL))
        return TRUE;
    
    va_start (ap, fmt);
    str = g_strdup_vprintf (fmt, ap);
    va_end (ap);
    mbox = gtk_message_dialog_new (parent, GTK_DIALOG_DESTROY_WITH_PARENT,
                       GTK_MESSAGE_QUESTION, GTK_BUTTONS_YES_NO,
                       "%s", str);
    g_free (str);
    gtk_dialog_set_default_response ((GtkDialog *) mbox, def);
    if (promptkey) {
        check = gtk_check_button_new_with_label (_("Don't show this message again."));
        gtk_box_pack_start ((GtkBox *)((GtkDialog *) mbox)->vbox, check, TRUE, TRUE, 10);
        gtk_widget_show (check);
    }
    
    button = gtk_dialog_run ((GtkDialog *) mbox);
    if (promptkey)
        gconf_client_set_bool(gconf, promptkey, !gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(check)), NULL);

    gtk_widget_destroy(mbox);
    
    return button == GTK_RESPONSE_YES;
}

/**
 * em_utils_uids_copy:
 * @uids: array of uids
 *
 * Duplicates the array of uids held by @uids into a new
 * GPtrArray. Use em_utils_uids_free() to free the resultant uid
 * array.
 *
 * Returns a duplicate copy of @uids.
 **/
GPtrArray *
em_utils_uids_copy (GPtrArray *uids)
{
    GPtrArray *copy;
    int i;
    
    copy = g_ptr_array_new ();
    g_ptr_array_set_size (copy, uids->len);
    
    for (i = 0; i < uids->len; i++)
        copy->pdata[i] = g_strdup (uids->pdata[i]);
    
    return copy;
}

/**
 * em_utils_uids_free:
 * @uids: array of uids
 *
 * Frees the array of uids pointed to by @uids back to the system.
 **/
void
em_utils_uids_free (GPtrArray *uids)
{
    int i;
    
    for (i = 0; i < uids->len; i++)
        g_free (uids->pdata[i]);
    
    g_ptr_array_free (uids, TRUE);
}

static void
druid_destroy_cb (gpointer user_data, GObject *deadbeef)
{
    gtk_main_quit ();
}

/**
 * em_utils_configure_account:
 * @parent: parent window for the druid to be a child of.
 *
 * Displays a druid allowing the user to configure an account. If
 * @parent is non-NULL, then the druid will be created as a child
 * window of @parent's toplevel window.
 *
 * Returns %TRUE if an account has been configured or %FALSE
 * otherwise.
 **/
gboolean
em_utils_configure_account (GtkWidget *parent)
{
    MailConfigDruid *druid;
    
    druid = mail_config_druid_new ();
    
    if (parent != NULL)
        e_dialog_set_transient_for ((GtkWindow *) druid, parent);
    
    g_object_weak_ref ((GObject *) druid, (GWeakNotify) druid_destroy_cb, NULL);
    gtk_widget_show ((GtkWidget *) druid);
    gtk_grab_add ((GtkWidget *) druid);
    gtk_main ();
    
    return mail_config_is_configured ();
}

/**
 * em_utils_check_user_can_send_mail:
 * @parent: parent window for the druid to be a child of.
 *
 * If no accounts have been configured, the user will be given a
 * chance to configure an account. In the case that no accounts are
 * configured, a druid will be created. If @parent is non-NULL, then
 * the druid will be created as a child window of @parent's toplevel
 * window.
 *
 * Returns %TRUE if the user has an account configured (to send mail)
 * or %FALSE otherwise.
 **/
gboolean
em_utils_check_user_can_send_mail (GtkWidget *parent)
{
    EAccount *account;
    
    if (!mail_config_is_configured ()) {
        if (!em_utils_configure_account (parent))
            return FALSE;
    }
    
    if (!(account = mail_config_get_default_account ()))
        return FALSE;
    
    /* Check for a transport */
    if (!account->transport->url)
        return FALSE;
    
    return TRUE;
}

/* Editing Filters/vFolders... */

static GtkWidget *filter_editor = NULL;

static void
filter_editor_response (GtkWidget *dialog, int button, gpointer user_data)
{
    FilterContext *fc;
    
    if (button == GTK_RESPONSE_OK) {
        char *user;
        
        fc = g_object_get_data ((GObject *) dialog, "context");
        user = g_strdup_printf ("%s/mail/filters.xml",
                    mail_component_peek_base_directory (mail_component_peek ()));
        rule_context_save ((RuleContext *) fc, user);
        g_free (user);
    }
    
    gtk_widget_destroy (dialog);
    
    filter_editor = NULL;
}

static const char *filter_source_names[] = {
    "incoming",
    "outgoing",
    NULL,
};

/**
 * em_utils_edit_filters:
 * @parent: parent window
 *
 * Opens or raises the filters editor dialog so that the user may edit
 * his/her filters. If @parent is non-NULL, then the dialog will be
 * created as a child window of @parent's toplevel window.
 **/
void
em_utils_edit_filters (GtkWidget *parent)
{
    const char *base_directory = mail_component_peek_base_directory (mail_component_peek ());
    char *user, *system;
    FilterContext *fc;
    
    if (filter_editor) {
        gdk_window_raise (GTK_WIDGET (filter_editor)->window);
        return;
    }
    
    fc = filter_context_new ();
    user = g_strdup_printf ("%s/mail/filters.xml", base_directory);
    system = EVOLUTION_PRIVDATADIR "/filtertypes.xml";
    rule_context_load ((RuleContext *) fc, system, user);
    g_free (user);
    
    if (((RuleContext *) fc)->error) {
        e_notice (parent, GTK_MESSAGE_ERROR,
              _("Error loading filter information:\n%s"),
              ((RuleContext *) fc)->error);
        return;
    }
    
    filter_editor = (GtkWidget *) filter_editor_new (fc, filter_source_names);
    if (parent != NULL)
        e_dialog_set_transient_for ((GtkWindow *) filter_editor, parent);
    
    gtk_window_set_title (GTK_WINDOW (filter_editor), _("Filters"));
    g_object_set_data_full ((GObject *) filter_editor, "context", fc, (GtkDestroyNotify) g_object_unref);
    g_signal_connect (filter_editor, "response", G_CALLBACK (filter_editor_response), NULL);
    gtk_widget_show (GTK_WIDGET (filter_editor));
}

/* Composing messages... */

static EMsgComposer *
create_new_composer (void)
{
    EMsgComposer *composer;
    
    composer = e_msg_composer_new ();
    
    em_composer_utils_setup_default_callbacks (composer);
    
    return composer;
}

/**
 * em_utils_compose_new_message:
 *
 * Opens a new composer window as a child window of @parent's toplevel
 * window.
 **/
void
em_utils_compose_new_message (void)
{
    GtkWidget *composer;
    
    composer = (GtkWidget *) create_new_composer ();
    
    gtk_widget_show (composer);
}

/**
 * em_utils_compose_new_message_with_mailto:
 * @url: mailto url
 *
 * Opens a new composer window as a child window of @parent's toplevel
 * window. If @url is non-NULL, the composer fields will be filled in
 * according to the values in the mailto url.
 **/
void
em_utils_compose_new_message_with_mailto (const char *url)
{
    EMsgComposer *composer;
    
    if (url != NULL)
        composer = e_msg_composer_new_from_url (url);
    else
        composer = e_msg_composer_new ();
    
    em_composer_utils_setup_default_callbacks (composer);
    
    gtk_widget_show ((GtkWidget *) composer);
}

/**
 * em_utils_post_to_folder:
 * @folder: folder
 *
 * Opens a new composer window as a child window of @parent's toplevel
 * window. If @folder is non-NULL, the composer will default to posting
 * mail to the folder specified by @folder.
 **/
void
em_utils_post_to_folder (CamelFolder *folder)
{
    EMsgComposer *composer;
    EAccount *account;
    
    composer = e_msg_composer_new_with_type (E_MSG_COMPOSER_POST);
    
    if (folder != NULL) {
        char *url = mail_tools_folder_to_url (folder);
        
        e_msg_composer_hdrs_set_post_to ((EMsgComposerHdrs *) ((EMsgComposer *) composer)->hdrs, url);
        g_free (url);
        
        url = camel_url_to_string (CAMEL_SERVICE (folder->parent_store)->url, CAMEL_URL_HIDE_ALL);
        account = mail_config_get_account_by_source_url (url);
        g_free (url);
        
        if (account)
            e_msg_composer_set_headers (composer, account->name, NULL, NULL, NULL, "");
    }
    
    em_composer_utils_setup_default_callbacks (composer);
    
    e_msg_composer_unset_changed (composer);
    e_msg_composer_drop_editor_undo (composer);
    
    gtk_widget_show ((GtkWidget *) composer);
}

/**
 * em_utils_post_to_url:
 * @url: mailto url
 *
 * Opens a new composer window as a child window of @parent's toplevel
 * window. If @url is non-NULL, the composer will default to posting
 * mail to the folder specified by @url.
 **/
void
em_utils_post_to_url (const char *url)
{
    EMsgComposer *composer;
    
    composer = e_msg_composer_new_with_type (E_MSG_COMPOSER_POST);
    
    if (url != NULL)
        e_msg_composer_hdrs_set_post_to ((EMsgComposerHdrs *) ((EMsgComposer *) composer)->hdrs, url);
    
    em_composer_utils_setup_default_callbacks (composer);
    
    e_msg_composer_unset_changed (composer);
    e_msg_composer_drop_editor_undo (composer);
    
    gtk_widget_show ((GtkWidget *) composer);
}

/* Editing messages... */

static void
edit_message (CamelMimeMessage *message, CamelFolder *drafts, const char *uid)
{
    EMsgComposer *composer;
    
    composer = e_msg_composer_new_with_message (message);
    em_composer_utils_setup_callbacks (composer, NULL, NULL, 0, 0, drafts, uid);
    e_msg_composer_unset_changed (composer);
    e_msg_composer_drop_editor_undo (composer);
    
    gtk_widget_show (GTK_WIDGET (composer));
}

/**
 * em_utils_edit_message:
 * @message: message to edit
 *
 * Opens a composer filled in with the headers/mime-parts/etc of
 * @message.
 **/
void
em_utils_edit_message (CamelMimeMessage *message)
{
    g_return_if_fail (CAMEL_IS_MIME_MESSAGE (message));
    
    edit_message (message, NULL, NULL);
}

static void
edit_messages (CamelFolder *folder, GPtrArray *uids, GPtrArray *msgs, void *user_data)
{
    int i;
    
    if (msgs == NULL)
        return;
    
    for (i = 0; i < msgs->len; i++) {
        camel_medium_remove_header (CAMEL_MEDIUM (msgs->pdata[i]), "X-Mailer");
        
        edit_message (msgs->pdata[i], folder, uids->pdata[i]);
    }
}

/**
 * em_utils_edit_messages:
 * @folder: folder containing messages to edit
 * @uids: uids of messages to edit
 *
 * Opens a composer for each message to be edited.
 **/
void
em_utils_edit_messages (CamelFolder *folder, GPtrArray *uids)
{
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uids != NULL);
    
    mail_get_messages (folder, uids, edit_messages, NULL);
}

/* Forwarding messages... */

static void
forward_attached (CamelFolder *folder, GPtrArray *messages, CamelMimePart *part, char *subject, void *user_data)
{
    EMsgComposer *composer;
    
    if (part == NULL)
        return;
    
    composer = create_new_composer ();
    e_msg_composer_set_headers (composer, NULL, NULL, NULL, NULL, subject);
    e_msg_composer_attach (composer, part);
    
    e_msg_composer_unset_changed (composer);
    e_msg_composer_drop_editor_undo (composer);
    
    gtk_widget_show (GTK_WIDGET (composer));
}

/**
 * em_utils_forward_attached:
 * @folder: folder containing messages to forward
 * @uids: uids of messages to forward
 *
 * If there is more than a single message in @uids, a multipart/digest
 * will be constructed and attached to a new composer window preset
 * with the appropriate header defaults for forwarding the first
 * message in the list. If only one message is to be forwarded, it is
 * forwarded as a simple message/rfc822 attachment.
 **/
void
em_utils_forward_attached (CamelFolder *folder, GPtrArray *uids)
{
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uids != NULL);
    
    mail_build_attachment (folder, uids, forward_attached, NULL);
}

static void
forward_non_attached (GPtrArray *messages, int style)
{
    CamelMimeMessage *message;
    CamelDataWrapper *wrapper;
    EMsgComposer *composer;
    char *subject, *text;
    int i;
    guint32 flags;

    if (messages->len == 0)
        return;

    flags = EM_FORMAT_QUOTE_HEADERS;
    if (style == MAIL_CONFIG_FORWARD_QUOTED)
        flags |= EM_FORMAT_QUOTE_CITE;

    for (i = 0; i < messages->len; i++) {
        message = messages->pdata[i];
        subject = mail_tool_generate_forward_subject (message);
        
        text = em_utils_message_to_html (message, _("-------- Forwarded Message --------"), flags);
        
        if (text) {
            composer = create_new_composer ();
            e_msg_composer_set_headers (composer, NULL, NULL, NULL, NULL, subject);
            e_msg_composer_set_body_text (composer, text);
            
            wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (message));
            if (CAMEL_IS_MULTIPART (wrapper))
                e_msg_composer_add_message_attachments (composer, message, FALSE);
            
            e_msg_composer_unset_changed (composer);
            e_msg_composer_drop_editor_undo (composer);
            
            gtk_widget_show (GTK_WIDGET (composer));
            
            g_free (text);
        }
        
        g_free (subject);
    }
}

static void
forward_inline (CamelFolder *folder, GPtrArray *uids, GPtrArray *messages, void *user_data)
{
    forward_non_attached (messages, MAIL_CONFIG_FORWARD_INLINE);
}

/**
 * em_utils_forward_inline:
 * @folder: folder containing messages to forward
 * @uids: uids of messages to forward
 *
 * Forwards each message in the 'inline' form, each in its own composer window.
 **/
void
em_utils_forward_inline (CamelFolder *folder, GPtrArray *uids)
{
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uids != NULL);
    
    mail_get_messages (folder, uids, forward_inline, NULL);
}

static void
forward_quoted (CamelFolder *folder, GPtrArray *uids, GPtrArray *messages, void *user_data)
{
    forward_non_attached (messages, MAIL_CONFIG_FORWARD_QUOTED);
}

/**
 * em_utils_forward_quoted:
 * @folder: folder containing messages to forward
 * @uids: uids of messages to forward
 *
 * Forwards each message in the 'quoted' form (each line starting with
 * a "> "), each in its own composer window.
 **/
void
em_utils_forward_quoted (CamelFolder *folder, GPtrArray *uids)
{
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uids != NULL);
    
    mail_get_messages (folder, uids, forward_quoted, NULL);
}

/**
 * em_utils_forward_message:
 * @parent: parent window
 * @message: message to be forwarded
 *
 * Forwards a message in the user's configured default style.
 **/
void
em_utils_forward_message (CamelMimeMessage *message)
{
    GPtrArray *messages;
    CamelMimePart *part;
    GConfClient *gconf;
    char *subject;
    int mode;
    
    messages = g_ptr_array_new ();
    g_ptr_array_add (messages, message);
    
    gconf = mail_config_get_gconf_client ();
    mode = gconf_client_get_int (gconf, "/apps/evolution/mail/format/forward_style", NULL);
    
    switch (mode) {
    case MAIL_CONFIG_FORWARD_ATTACHED:
    default:
        part = mail_tool_make_message_attachment (message);
        
        subject = mail_tool_generate_forward_subject (message);
        
        forward_attached (NULL, messages, part, subject, NULL);
        camel_object_unref (part);
        g_free (subject);
        break;
    case MAIL_CONFIG_FORWARD_INLINE:
        forward_non_attached (messages, MAIL_CONFIG_FORWARD_INLINE);
        break;
    case MAIL_CONFIG_FORWARD_QUOTED:
        forward_non_attached (messages, MAIL_CONFIG_FORWARD_QUOTED);
        break;
    }
    
    g_ptr_array_free (messages, TRUE);
}

/**
 * em_utils_forward_messages:
 * @folder: folder containing messages to forward
 * @uids: uids of messages to forward
 *
 * Forwards a group of messages in the user's configured default
 * style.
 **/
void
em_utils_forward_messages (CamelFolder *folder, GPtrArray *uids)
{
    GConfClient *gconf;
    int mode;
    
    gconf = mail_config_get_gconf_client ();
    mode = gconf_client_get_int (gconf, "/apps/evolution/mail/format/forward_style", NULL);
    
    switch (mode) {
    case MAIL_CONFIG_FORWARD_ATTACHED:
    default:
        em_utils_forward_attached (folder, uids);
        break;
    case MAIL_CONFIG_FORWARD_INLINE:
        em_utils_forward_inline (folder, uids);
        break;
    case MAIL_CONFIG_FORWARD_QUOTED:
        em_utils_forward_quoted (folder, uids);
        break;
    }
}

/* Redirecting messages... */

static EMsgComposer *
redirect_get_composer (CamelMimeMessage *message)
{
    EMsgComposer *composer;
    EAccount *account;
    
    /* QMail will refuse to send a message if it finds one of
       it's Delivered-To headers in the message, so remove all
       Delivered-To headers. Fixes bug #23635. */
    while (camel_medium_get_header (CAMEL_MEDIUM (message), "Delivered-To"))
        camel_medium_remove_header (CAMEL_MEDIUM (message), "Delivered-To");
    
    account = guess_account (message, NULL);
    
    composer = e_msg_composer_new_redirect (message, account ? account->name : NULL);
    
    em_composer_utils_setup_default_callbacks (composer);
    
    return composer;
}

/**
 * em_utils_redirect_message:
 * @message: message to redirect
 *
 * Opens a composer to redirect @message (Note: only headers will be
 * editable). Adds Resent-From/Resent-To/etc headers.
 **/
void
em_utils_redirect_message (CamelMimeMessage *message)
{
    EMsgComposer *composer;
    CamelDataWrapper *wrapper;
    
    g_return_if_fail (CAMEL_IS_MIME_MESSAGE (message));
    
    composer = redirect_get_composer (message);
    
    wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (message));
    
    gtk_widget_show (GTK_WIDGET (composer));
    e_msg_composer_unset_changed (composer);
    e_msg_composer_drop_editor_undo (composer);
}

static void
redirect_msg (CamelFolder *folder, const char *uid, CamelMimeMessage *message, void *user_data)
{
    if (message == NULL)
        return;
    
    em_utils_redirect_message (message);
}

/**
 * em_utils_redirect_message_by_uid:
 * @folder: folder containing message to be redirected
 * @uid: uid of message to be redirected
 *
 * Opens a composer to redirect the message (Note: only headers will
 * be editable). Adds Resent-From/Resent-To/etc headers.
 **/
void
em_utils_redirect_message_by_uid (CamelFolder *folder, const char *uid)
{
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uid != NULL);
    
    mail_get_message (folder, uid, redirect_msg, NULL, mail_thread_new);
}

/* Replying to messages... */

static GHashTable *
generate_account_hash (void)
{
    GHashTable *account_hash;
    EAccount *account, *def;
    EAccountList *accounts;
    EIterator *iter;
    
    accounts = mail_config_get_accounts ();
    account_hash = g_hash_table_new (camel_strcase_hash, camel_strcase_equal);
    
    /* add the default account to the hash first */
    if ((def = mail_config_get_default_account ())) {
        if (def->id->address)
            g_hash_table_insert (account_hash, (char *) def->id->address, (void *) def);
    }
    
    iter = e_list_get_iterator ((EList *) accounts);
    while (e_iterator_is_valid (iter)) {
        account = (EAccount *) e_iterator_get (iter);
        
        if (account->id->address) {
            EAccount *acnt;
            
            /* Accounts with identical email addresses that are enabled
             * take precedence over the accounts that aren't. If all
             * accounts with matching email addresses are disabled, then
             * the first one in the list takes precedence. The default
             * account always takes precedence no matter what.
             */
            acnt = g_hash_table_lookup (account_hash, account->id->address);
            if (acnt && acnt != def && !acnt->enabled && account->enabled) {
                g_hash_table_remove (account_hash, acnt->id->address);
                acnt = NULL;
            }
            
            if (!acnt)
                g_hash_table_insert (account_hash, (char *) account->id->address, (void *) account);
        }
        
        e_iterator_next (iter);
    }
    
    g_object_unref (iter);
    
    return account_hash;
}

static EDestination **
em_utils_camel_address_to_destination (CamelInternetAddress *iaddr)
{
    EDestination *dest, **destv;
    int n, i, j;
    
    if (iaddr == NULL)
        return NULL;
    
    if ((n = camel_address_length ((CamelAddress *) iaddr)) == 0)
        return NULL;
    
    destv = g_malloc (sizeof (EDestination *) * (n + 1));
    for (i = 0, j = 0; i < n; i++) {
        const char *name, *addr;
        
        if (camel_internet_address_get (iaddr, i, &name, &addr)) {
            dest = e_destination_new ();
            e_destination_set_name (dest, name);
            e_destination_set_email (dest, addr);
            
            destv[j++] = dest;
        }
    }
    
    if (j == 0) {
        g_free (destv);
        return NULL;
    }
    
    destv[j] = NULL;
    
    return destv;
}

static EMsgComposer *
reply_get_composer (CamelMimeMessage *message, EAccount *account,
            CamelInternetAddress *to, CamelInternetAddress *cc,
            CamelFolder *folder, const char *postto)
{
    const char *message_id, *references;
    EDestination **tov, **ccv;
    EMsgComposer *composer;
    char *subject;
    
    g_return_val_if_fail (CAMEL_IS_MIME_MESSAGE (message), NULL);
    g_return_val_if_fail (to == NULL || CAMEL_IS_INTERNET_ADDRESS (to), NULL);
    g_return_val_if_fail (cc == NULL || CAMEL_IS_INTERNET_ADDRESS (cc), NULL);

    /* construct the tov/ccv */
    tov = em_utils_camel_address_to_destination (to);
    ccv = em_utils_camel_address_to_destination (cc);

    if (tov || ccv) {
        if (postto)
            composer = e_msg_composer_new_with_type (E_MSG_COMPOSER_MAIL_POST);
        else
            composer = e_msg_composer_new_with_type (E_MSG_COMPOSER_MAIL);
    } else
        composer = e_msg_composer_new_with_type (E_MSG_COMPOSER_POST);

    /* Set the subject of the new message. */
    if ((subject = (char *) camel_mime_message_get_subject (message))) {
        if (strncasecmp (subject, "Re: ", 4) != 0)
            subject = g_strdup_printf ("Re: %s", subject);
        else
            subject = g_strdup (subject);
    } else {
        subject = g_strdup ("");
    }

    e_msg_composer_set_headers (composer, account ? account->name : NULL, tov, ccv, NULL, subject);
    
    g_free (subject);
    
    /* add post-to, if nessecary */
    if (postto) {
        char *store_url = NULL;
        
        if (folder) {
            store_url = camel_url_to_string (CAMEL_SERVICE (folder->parent_store)->url, CAMEL_URL_HIDE_ALL);
            if (store_url[strlen (store_url) - 1] == '/')
                store_url[strlen (store_url)-1] = '\0';
        }
        
        e_msg_composer_hdrs_set_post_to_base (E_MSG_COMPOSER_HDRS (composer->hdrs), store_url ? store_url : "", postto);
        g_free (store_url);
    }
    
    /* Add In-Reply-To and References. */
    message_id = camel_medium_get_header (CAMEL_MEDIUM (message), "Message-Id");
    references = camel_medium_get_header (CAMEL_MEDIUM (message), "References");
    if (message_id) {
        char *reply_refs;
        
        e_msg_composer_add_header (composer, "In-Reply-To", message_id);
        
        if (references)
            reply_refs = g_strdup_printf ("%s %s", references, message_id);
        else
            reply_refs = g_strdup (message_id);
        
        e_msg_composer_add_header (composer, "References", reply_refs);
        g_free (reply_refs);
    } else if (references) {
        e_msg_composer_add_header (composer, "References", references);
    }
    
    e_msg_composer_drop_editor_undo (composer);
    
    return composer;
}

static EAccount *
guess_account_folder(CamelFolder *folder)
{
    EAccount *account;
    char *tmp;

    tmp = camel_url_to_string(CAMEL_SERVICE(folder->parent_store)->url, CAMEL_URL_HIDE_ALL);
    account = mail_config_get_account_by_source_url(tmp);
    g_free(tmp);

    return account;
}

static EAccount *
guess_account (CamelMimeMessage *message, CamelFolder *folder)
{
    GHashTable *account_hash = NULL;
    EAccount *account = NULL;
    const char *tmp;
    int i, j;
    char *types[2] = { CAMEL_RECIPIENT_TYPE_TO, CAMEL_RECIPIENT_TYPE_CC };

    /* check for newsgroup header */
    if (folder
        && camel_medium_get_header((CamelMedium *)message, "Newsgroups")
        && (account = guess_account_folder(folder)))
        return account;

    /* then recipient (to/cc) in account table */
    account_hash = generate_account_hash ();
    for (j=0;account == NULL && j<2;j++) {
        const CamelInternetAddress *to;
        
        to = camel_mime_message_get_recipients(message, types[j]);
        if (to) {
            for (i = 0; camel_internet_address_get(to, i, NULL, &tmp); i++) {
                account = g_hash_table_lookup(account_hash, tmp);
                if (account)
                    break;
            }
        }
    }
    g_hash_table_destroy(account_hash);

    /* then message source */
    if (account == NULL
        && (tmp = camel_mime_message_get_source(message)))
        account = mail_config_get_account_by_source_url(tmp);

    /* and finally, source folder */
    if (account == NULL
        && folder)
        account = guess_account_folder(folder);

    return account;
}

static void
get_reply_sender (CamelMimeMessage *message, CamelInternetAddress **to, const char **postto)
{
    const CamelInternetAddress *reply_to;
    const char *name, *addr, *posthdr;
    int i;
    
    /* check whether there is a 'Newsgroups: ' header in there */
    posthdr = camel_medium_get_header (CAMEL_MEDIUM (message), "Newsgroups");
    if (posthdr && postto) {
        *postto = posthdr;
        while (**postto == ' ')
            (*postto)++;
        return;
    }
    
    reply_to = camel_mime_message_get_reply_to (message);
    if (!reply_to)
        reply_to = camel_mime_message_get_from (message);
    
    if (reply_to) {
        *to = camel_internet_address_new ();
        
        for (i = 0; camel_internet_address_get (reply_to, i, &name, &addr); i++)
            camel_internet_address_add (*to, name, addr);
    }
}

static gboolean
get_reply_list (CamelMimeMessage *message, CamelInternetAddress **to)
{
    const char *header, *p;
    char *addr;
    
    /* Examples:
     * 
     * List-Post: <mailto:list@host.com>
     * List-Post: <mailto:moderator@host.com?subject=list%20posting>
     * List-Post: NO (posting not allowed on this list)
     */
    if (!(header = camel_medium_get_header ((CamelMedium *) message, "List-Post")))
        return FALSE;
    
    while (*header == ' ' || *header == '\t')
        header++;
    
    /* check for NO */
    if (!strncasecmp (header, "NO", 2))
        return FALSE;
    
    /* Search for the first mailto angle-bracket enclosed URL.
     * (See rfc2369, Section 2, paragraph 3 for details) */
    if (!(header = camel_strstrcase (header, "<mailto:")))
        return FALSE;
    
    header += 8;
    
    p = header;
    while (*p && !strchr ("?>", *p))
        p++;
    
    addr = g_strndup (header, p - header);
    
    *to = camel_internet_address_new ();
    camel_internet_address_add (*to, NULL, addr);
    
    g_free (addr);
    
    return TRUE;
}

static void
concat_unique_addrs (CamelInternetAddress *dest, const CamelInternetAddress *src, GHashTable *rcpt_hash)
{
    const char *name, *addr;
    int i;
    
    for (i = 0; camel_internet_address_get (src, i, &name, &addr); i++) {
        if (!g_hash_table_lookup (rcpt_hash, addr)) {
            camel_internet_address_add (dest, name, addr);
            g_hash_table_insert (rcpt_hash, (char *) addr, GINT_TO_POINTER (1));
        }
    }
}

static void
get_reply_all (CamelMimeMessage *message, CamelInternetAddress **to, CamelInternetAddress **cc, const char **postto)
{
    const CamelInternetAddress *reply_to, *to_addrs, *cc_addrs;
    const char *name, *addr, *posthdr;
    GHashTable *rcpt_hash;
    int i;
    
    /* check whether there is a 'Newsgroups: ' header in there */
    posthdr = camel_medium_get_header (CAMEL_MEDIUM(message), "Newsgroups");
    if (posthdr && postto) {
        *postto = posthdr;
        while (**postto == ' ')
            (*postto)++;
    }
    
    rcpt_hash = generate_account_hash ();
    
    reply_to = camel_mime_message_get_reply_to (message);
    if (!reply_to)
        reply_to = camel_mime_message_get_from (message);
    
    to_addrs = camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_TO);
    cc_addrs = camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_CC);
    
    *to = camel_internet_address_new ();
    *cc = camel_internet_address_new ();
    
    if (reply_to) {
        for (i = 0; camel_internet_address_get (reply_to, i, &name, &addr); i++) {
            /* ignore references to the Reply-To address in the To and Cc lists */
            if (addr && !g_hash_table_lookup (rcpt_hash, addr)) {
                /* In the case that we are doing a Reply-To-All, we do not want
                   to include the user's email address because replying to oneself
                   is kinda silly. */
                
                camel_internet_address_add (*to, name, addr);
                g_hash_table_insert (rcpt_hash, (char *) addr, GINT_TO_POINTER (1));
            }
        }
    }
    
    concat_unique_addrs (*cc, to_addrs, rcpt_hash);
    concat_unique_addrs (*cc, cc_addrs, rcpt_hash);
    
    /* promote the first Cc: address to To: if To: is empty */
    if (camel_address_length ((CamelAddress *) *to) == 0 && camel_address_length ((CamelAddress *) *cc) > 0) {
        camel_internet_address_get (*cc, 0, &name, &addr);
        camel_internet_address_add (*to, name, addr);
        camel_address_remove ((CamelAddress *) *cc, 0);
    }
    
    g_hash_table_destroy (rcpt_hash);
}

static void
composer_set_body (EMsgComposer *composer, CamelMimeMessage *message)
{
    const CamelInternetAddress *sender;
    char *text, *credits, format[256];
    const char *name, *addr;
    CamelMimePart *part;
    GConfClient *gconf;
    time_t date;
    int date_offset;
    
    gconf = mail_config_get_gconf_client ();
    
    switch (gconf_client_get_int (gconf, "/apps/evolution/mail/format/reply_style", NULL)) {
    case MAIL_CONFIG_REPLY_DO_NOT_QUOTE:
        /* do nothing */
        break;
    case MAIL_CONFIG_REPLY_ATTACH:
        /* attach the original message as an attachment */
        part = mail_tool_make_message_attachment (message);
        e_msg_composer_attach (composer, part);
        camel_object_unref (part);
        break;
    case MAIL_CONFIG_REPLY_QUOTED:
    default:
        /* do what any sane user would want when replying... */
        sender = camel_mime_message_get_from (message);
        if (sender != NULL && camel_address_length (CAMEL_ADDRESS (sender)) > 0) {
            camel_internet_address_get (sender, 0, &name, &addr);
        } else {
            name = _("an unknown sender");
        }

        date = camel_mime_message_get_date(message, &date_offset);
        /* Convert to UTC */
        date += (date_offset / 100) * 60 * 60;
        date += (date_offset % 100) * 60;

        /* translators: attribution string used when quoting messages,
           it must contain a single single %%+05d followed by a single '%%s' */
        e_utf8_strftime(format, sizeof(format), _("On %a, %Y-%m-%d at %H:%M %%+05d, %%s wrote:"), gmtime(&date));
        credits = g_strdup_printf(format, date_offset, name && *name ? name : addr);
        text = em_utils_message_to_html(message, credits, EM_FORMAT_QUOTE_CITE);
        g_free (credits);
        e_msg_composer_set_body_text(composer, text);
        g_free (text);
        break;
    }
    
    e_msg_composer_drop_editor_undo (composer);
}

/**
 * em_utils_reply_to_message:
 * @message: message to reply to
 * @mode: reply mode
 *
 * Creates a new composer ready to reply to @message.
 **/
void
em_utils_reply_to_message (CamelMimeMessage *message, int mode)
{
    CamelInternetAddress *to = NULL, *cc = NULL;
    EMsgComposer *composer;
    EAccount *account;
    
    account = guess_account (message, NULL);
    
    switch (mode) {
    case REPLY_MODE_SENDER:
        get_reply_sender (message, &to, NULL);
        break;
    case REPLY_MODE_LIST:
        if (get_reply_list (message, &to))
            break;
    case REPLY_MODE_ALL:
        get_reply_all (message, &to, &cc, NULL);
        break;
    }
    
    composer = reply_get_composer (message, account, to, cc, NULL, NULL);
    e_msg_composer_add_message_attachments (composer, message, TRUE);
    
    if (to != NULL)
        camel_object_unref (to);
    
    if (cc != NULL)
        camel_object_unref (cc);
    
    composer_set_body (composer, message);
    
    em_composer_utils_setup_default_callbacks (composer);
    
    gtk_widget_show (GTK_WIDGET (composer));
    e_msg_composer_unset_changed (composer);
}

static void
reply_to_message (CamelFolder *folder, const char *uid, CamelMimeMessage *message, void *user_data)
{
    CamelInternetAddress *to = NULL, *cc = NULL;
    const char *postto = NULL;
    EMsgComposer *composer;
    EAccount *account;
    guint32 flags;
    int mode;
    
    if (message == NULL)
        return;
    
    mode = GPOINTER_TO_INT (user_data);

    account = guess_account (message, folder);
    flags = CAMEL_MESSAGE_ANSWERED | CAMEL_MESSAGE_SEEN;
    
    switch (mode) {
    case REPLY_MODE_SENDER:
        get_reply_sender (message, &to, &postto);
        break;
    case REPLY_MODE_LIST:
        flags |= CAMEL_MESSAGE_ANSWERED_ALL;
        if (get_reply_list (message, &to))
            break;
    case REPLY_MODE_ALL:
        flags |= CAMEL_MESSAGE_ANSWERED_ALL;
        get_reply_all (message, &to, &cc, &postto);
        break;
    }
    
    composer = reply_get_composer (message, account, to, cc, folder, postto);
    e_msg_composer_add_message_attachments (composer, message, TRUE);
    
    if (to != NULL)
        camel_object_unref (to);
    
    if (cc != NULL)
        camel_object_unref (cc);
    
    composer_set_body (composer, message);
    
    em_composer_utils_setup_callbacks (composer, folder, uid, flags, flags, NULL, NULL);
    
    gtk_widget_show (GTK_WIDGET (composer));
    e_msg_composer_unset_changed (composer);
}

/**
 * em_utils_reply_to_message_by_uid:
 * @folder: folder containing message to reply to
 * @uid: message uid
 * @mode: reply mode
 *
 * Creates a new composer ready to reply to the message referenced by
 * @folder and @uid.
 **/
void
em_utils_reply_to_message_by_uid (CamelFolder *folder, const char *uid, int mode)
{
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uid != NULL);
    
    mail_get_message (folder, uid, reply_to_message, GINT_TO_POINTER (mode), mail_thread_new);
}

/* Posting replies... */

static void
post_reply_to_message (CamelFolder *folder, const char *uid, CamelMimeMessage *message, void *user_data)
{
    /* FIXME: would be nice if this shared more code with reply_get_composer() */
    const char *message_id, *references;
    CamelInternetAddress *to = NULL;
    EDestination **tov = NULL;
    EMsgComposer *composer;
    char *subject, *url;
    EAccount *account;
    guint32 flags;
    
    if (message == NULL)
        return;
    
    account = guess_account (message, folder);
    flags = CAMEL_MESSAGE_ANSWERED | CAMEL_MESSAGE_SEEN;
    
    get_reply_sender (message, &to, NULL);
    
    composer = e_msg_composer_new_with_type (E_MSG_COMPOSER_MAIL_POST);
    
    /* construct the tov/ccv */
    tov = em_utils_camel_address_to_destination (to);
    
    /* Set the subject of the new message. */
    if ((subject = (char *) camel_mime_message_get_subject (message))) {
        if (strncasecmp (subject, "Re: ", 4) != 0)
            subject = g_strdup_printf ("Re: %s", subject);
        else
            subject = g_strdup (subject);
    } else {
        subject = g_strdup ("");
    }
    
    e_msg_composer_set_headers (composer, account ? account->name : NULL, tov, NULL, NULL, subject);
    
    g_free (subject);
    
    url = mail_tools_folder_to_url (folder);
    e_msg_composer_hdrs_set_post_to ((EMsgComposerHdrs *) composer->hdrs, url);
    g_free (url);
    
    /* Add In-Reply-To and References. */
    message_id = camel_medium_get_header (CAMEL_MEDIUM (message), "Message-Id");
    references = camel_medium_get_header (CAMEL_MEDIUM (message), "References");
    if (message_id) {
        char *reply_refs;
        
        e_msg_composer_add_header (composer, "In-Reply-To", message_id);
        
        if (references)
            reply_refs = g_strdup_printf ("%s %s", references, message_id);
        else
            reply_refs = g_strdup (message_id);
        
        e_msg_composer_add_header (composer, "References", reply_refs);
        g_free (reply_refs);
    } else if (references) {
        e_msg_composer_add_header (composer, "References", references);
    }
    
    e_msg_composer_drop_editor_undo (composer);
    
    e_msg_composer_add_message_attachments (composer, message, TRUE);
    
    if (to != NULL)
        camel_object_unref (to);
    
    composer_set_body (composer, message);
    
    em_composer_utils_setup_callbacks (composer, folder, uid, flags, flags, NULL, NULL);
    
    gtk_widget_show (GTK_WIDGET (composer));    
    e_msg_composer_unset_changed (composer);
}

/**
 * em_utils_post_reply_to_message_by_uid:
 * @folder: folder containing message to reply to
 * @uid: message uid
 * @mode: reply mode
 *
 * Creates a new composer (post mode) ready to reply to the message
 * referenced by @folder and @uid.
 **/
void
em_utils_post_reply_to_message_by_uid (CamelFolder *folder, const char *uid)
{
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uid != NULL);
    
    mail_get_message (folder, uid, post_reply_to_message, NULL, mail_thread_new);
}

/* Saving messages... */

static GtkFileSelection *
emu_get_save_filesel (GtkWidget *parent, const char *title, const char *name)
{
    GtkFileSelection *filesel;
    char *gdir, *mname = NULL, *filename;
    const char *realname, *dir;
    GConfClient *gconf;

    filesel = (GtkFileSelection *)gtk_file_selection_new(title);
    if (parent)
        e_dialog_set_transient_for((GtkWindow *)filesel, parent);

    gconf = gconf_client_get_default();
    dir = gdir = gconf_client_get_string(gconf, "/apps/evolution/mail/save_dir", NULL);
    g_object_unref(gconf);
    if (dir == NULL)
        dir = g_get_home_dir();

    if (name && name[0]) {
        realname = mname = g_strdup(name);
        e_filename_make_safe(mname);
    } else {
        realname = "/";
    }

    filename = g_build_filename(dir, realname, NULL);
    gtk_file_selection_set_filename(filesel, filename);
    g_free(filename);
    g_free(mname);
    g_free (gdir);

    return filesel;
}

static void
emu_update_save_path(const char *filename)
{
    char *dir = g_path_get_dirname(filename);
    GConfClient *gconf = gconf_client_get_default();

    gconf_client_set_string(gconf, "/apps/evolution/mail/save_dir", dir, NULL);
    g_object_unref(gconf);
    g_free(dir);
}

static gboolean
emu_can_save(GtkWindow *parent, const char *path)
{
    struct stat st;
    
    if (path[0] == 0)
        return FALSE;

    /* make sure we can actually save to it... */
    if (stat (path, &st) != -1 && !S_ISREG (st.st_mode))
        return FALSE;
    
    if (access (path, F_OK) == 0) {
        if (access (path, W_OK) != 0) {
            e_notice (parent, GTK_MESSAGE_ERROR,
                 _("Cannot save to `%s'\n %s"), path, g_strerror (errno));
            return FALSE;
        }
        
        return em_utils_prompt_user (parent, GTK_RESPONSE_NO, NULL,
                         _("`%s' already exists.\nOverwrite it?"), path);
    }
    
    return TRUE;
}

static void
emu_save_part_response(GtkFileSelection *filesel, int response, CamelMimePart *part)
{
    if (response == GTK_RESPONSE_OK) {
        const char *path = gtk_file_selection_get_filename(filesel);

        if (!emu_can_save((GtkWindow *)filesel, path))
            return;

        emu_update_save_path(path);
        /* FIXME: popup error if it fails? */
        mail_save_part(part, path, NULL, NULL);
    }

    gtk_widget_destroy((GtkWidget *)filesel);
    camel_object_unref(part);
}

/**
 * em_utils_save_part:
 * @parent: parent window
 * @prompt: prompt string
 * @part: part to save
 *
 * Saves a mime part to disk (prompting the user for filename).
 **/
void
em_utils_save_part(GtkWidget *parent, const char *prompt, CamelMimePart *part)
{
    const char *name;
    GtkFileSelection *filesel;

    name = camel_mime_part_get_filename(part);
    if (name == NULL) {
        if (CAMEL_IS_MIME_MESSAGE(part)) {
            name = camel_mime_message_get_subject((CamelMimeMessage *)part);
            if (name == NULL)
                name = _("message");
        } else {
            name = _("attachment");
        }
    }

    filesel = emu_get_save_filesel(parent, prompt, name);
    camel_object_ref(part);
    g_signal_connect(filesel, "response", G_CALLBACK(emu_save_part_response), part);
    gtk_widget_show((GtkWidget *)filesel);
}

/**
 * em_utils_save_part_to_file:
 * @parent: parent window
 * @filename: filename to save to
 * @part: part to save
 * 
 * Save a part's content to a specific file
 * Creates all needed directories and overwrites without prompting
 *
 * Returns %TRUE if saving succeeded, %FALSE otherwise
 **/
gboolean
em_utils_save_part_to_file(GtkWidget *parent, const char *filename, CamelMimePart *part) 
{
    int done;
    char *dirname;
    struct stat st;
    
    if (filename[0] == 0)
        return FALSE;
    
    dirname = g_path_get_dirname(filename);
    if (camel_mkdir(dirname, 0777) == -1) {
        e_notice(parent, GTK_MESSAGE_ERROR,
                 _("Cannot save to `%s'\n %s"), filename, g_strerror(errno));
        g_free(dirname);
        return FALSE;
    }
    g_free(dirname);

    if (access(filename, F_OK) == 0) {
        if (access(filename, W_OK) != 0) {
            e_notice(parent, GTK_MESSAGE_ERROR,
                 _("Cannot save to `%s'\n %s"), filename, g_strerror(errno));
            return FALSE;
        }
    }
    
    if (stat(filename, &st) != -1 && !S_ISREG(st.st_mode)) {
        e_notice(parent, GTK_MESSAGE_ERROR,
                 _("Error: '%s' exists and is not a regular file"), filename);
        return FALSE;
    }
    
    /* FIXME: This doesn't handle default charsets */
    mail_msg_wait(mail_save_part(part, filename, emu_save_part_done, &done));
    
    return done;
}

struct _save_messages_data {
    CamelFolder *folder;
    GPtrArray *uids;
};

static void
emu_save_messages_response(GtkFileSelection *filesel, int response, struct _save_messages_data *data)
{
    if (response == GTK_RESPONSE_OK) {
        const char *path = gtk_file_selection_get_filename(filesel);

        if (!emu_can_save((GtkWindow *)filesel, path))
            return;

        emu_update_save_path(path);
        mail_save_messages(data->folder, data->uids, path, NULL, NULL);
        data->uids = NULL;
    }

    camel_object_unref(data->folder);
    if (data->uids)
        em_utils_uids_free(data->uids);
    g_free(data);
    gtk_widget_destroy((GtkWidget *)filesel);
}

/**
 * em_utils_save_messages:
 * @parent: parent window
 * @folder: folder containing messages to save
 * @uids: uids of messages to save
 *
 * Saves a group of messages to disk in mbox format (prompting the
 * user for filename).
 **/
void
em_utils_save_messages (GtkWidget *parent, CamelFolder *folder, GPtrArray *uids)
{
    struct _save_messages_data *data;
    GtkFileSelection *filesel;

    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uids != NULL);

    filesel = emu_get_save_filesel(parent, _("Save Message..."), NULL);
    camel_object_ref(folder);
    
    data = g_malloc(sizeof(struct _save_messages_data));
    data->folder = folder;
    data->uids = uids;

    g_signal_connect(filesel, "response", G_CALLBACK(emu_save_messages_response), data);
    gtk_widget_show((GtkWidget *)filesel);
}

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

static void
emu_add_address_cb(BonoboListener *listener, const char *name, const CORBA_any *any, CORBA_Environment *ev, void *data)
{
    char *type = bonobo_event_subtype(name);
    
    if (!strcmp(type, "Destroy"))
        gtk_widget_destroy((GtkWidget *)data);
    
    g_free(type);
}

/**
 * em_utils_add_address:
 * @parent: 
 * @email: 
 * 
 * Add address @email to the addressbook.
 **/
void em_utils_add_address(struct _GtkWidget *parent, const char *email)
{
    CamelInternetAddress *cia;
    GtkWidget *win;
    GtkWidget *control;
    /*GtkWidget *socket;*/
    char *buf;
    
    cia = camel_internet_address_new ();
    if (camel_address_decode ((CamelAddress *) cia, email) == -1) {
        camel_object_unref (cia);
        return;
    }
    
    buf = camel_address_format ((CamelAddress *) cia);
    camel_object_unref (cia);
    
    win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title((GtkWindow *)win, _("Add address"));
    
    control = bonobo_widget_new_control("OAFIID:GNOME_Evolution_Addressbook_AddressPopup:" BASE_VERSION, CORBA_OBJECT_NIL);
    bonobo_widget_set_property((BonoboWidget *)control, "email", TC_CORBA_string, buf, NULL);
    g_free (buf);
    
    bonobo_event_source_client_add_listener(bonobo_widget_get_objref((BonoboWidget *)control), emu_add_address_cb, NULL, NULL, win);
    
    /*socket = find_socket (GTK_CONTAINER (control));
      g_object_weak_ref ((GObject *) socket, (GWeakNotify) gtk_widget_destroy, win);*/

    gtk_container_add((GtkContainer *)win, control);
    gtk_widget_show_all(win);
}

/* ********************************************************************** */
/* Flag-for-Followup... */

/* tag-editor callback data */
struct ted_t {
    MessageTagEditor *editor;
    CamelFolder *folder;
    GPtrArray *uids;
};

static void
ted_free (struct ted_t *ted)
{
    camel_object_unref (ted->folder);
    em_utils_uids_free (ted->uids);
    g_free (ted);
}

static void
tag_editor_response (GtkWidget *dialog, int button, struct ted_t *ted)
{
    CamelFolder *folder;
    CamelTag *tags, *t;
    GPtrArray *uids;
    int i;
    
    if (button == GTK_RESPONSE_OK && (tags = message_tag_editor_get_tag_list (ted->editor))) {
        folder = ted->folder;
        uids = ted->uids;
        
        camel_folder_freeze (folder);
        for (i = 0; i < uids->len; i++) {
            for (t = tags; t; t = t->next)
                camel_folder_set_message_user_tag (folder, uids->pdata[i], t->name, t->value);
        }
        
        camel_folder_thaw (folder);
        camel_tag_list_free (&tags);
    }
    
    gtk_widget_destroy (dialog);
}

/**
 * em_utils_flag_for_followup:
 * @parent: parent window
 * @folder: folder containing messages to flag
 * @uids: uids of messages to flag
 *
 * Open the Flag-for-Followup editor for the messages specified by
 * @folder and @uids.
 **/
void
em_utils_flag_for_followup (GtkWidget *parent, CamelFolder *folder, GPtrArray *uids)
{
    GtkWidget *editor;
    struct ted_t *ted;
    int i;
    
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uids != NULL);
    
    editor = (GtkWidget *) message_tag_followup_new ();
    
    if (parent != NULL)
        e_dialog_set_transient_for ((GtkWindow *) editor, parent);
    
    camel_object_ref (folder);
    
    ted = g_new (struct ted_t, 1);
    ted->editor = MESSAGE_TAG_EDITOR (editor);
    ted->folder = folder;
    ted->uids = uids;
    
    for (i = 0; i < uids->len; i++) {
        CamelMessageInfo *info;
        
        info = camel_folder_get_message_info (folder, uids->pdata[i]);
        message_tag_followup_append_message (MESSAGE_TAG_FOLLOWUP (editor),
                             camel_message_info_from (info),
                             camel_message_info_subject (info));
    }
    
    /* special-case... */
    if (uids->len == 1) {
        CamelMessageInfo *info;
        
        info = camel_folder_get_message_info (folder, uids->pdata[0]);
        if (info) {
            if (info->user_tags)
                message_tag_editor_set_tag_list (MESSAGE_TAG_EDITOR (editor), info->user_tags);
            camel_folder_free_message_info (folder, info);
        }
    }
    
    g_signal_connect (editor, "response", G_CALLBACK (tag_editor_response), ted);
    g_object_weak_ref ((GObject *) editor, (GWeakNotify) ted_free, ted);
    
    gtk_widget_show (editor);
}

/**
 * em_utils_flag_for_followup_clear:
 * @parent: parent window
 * @folder: folder containing messages to unflag
 * @uids: uids of messages to unflag
 *
 * Clears the Flag-for-Followup flag on the messages referenced by
 * @folder and @uids.
 **/
void
em_utils_flag_for_followup_clear (GtkWidget *parent, CamelFolder *folder, GPtrArray *uids)
{
    int i;
    
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uids != NULL);
    
    camel_folder_freeze (folder);
    for (i = 0; i < uids->len; i++) {
        camel_folder_set_message_user_tag (folder, uids->pdata[i], "follow-up", "");
        camel_folder_set_message_user_tag (folder, uids->pdata[i], "due-by", "");
        camel_folder_set_message_user_tag (folder, uids->pdata[i], "completed-on", "");
    }
    camel_folder_thaw (folder);
    
    em_utils_uids_free (uids);
}

/**
 * em_utils_flag_for_followup_completed:
 * @parent: parent window
 * @folder: folder containing messages to 'complete'
 * @uids: uids of messages to 'complete'
 *
 * Sets the completed state (and date/time) for each message
 * referenced by @folder and @uids that is marked for
 * Flag-for-Followup.
 **/
void
em_utils_flag_for_followup_completed (GtkWidget *parent, CamelFolder *folder, GPtrArray *uids)
{
    char *now;
    int i;
    
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (uids != NULL);
    
    now = camel_header_format_date (time (NULL), 0);
    
    camel_folder_freeze (folder);
    for (i = 0; i < uids->len; i++) {
        const char *tag;
        
        tag = camel_folder_get_message_user_tag (folder, uids->pdata[i], "follow-up");
        if (tag == NULL || *tag == '\0')
            continue;
        
        camel_folder_set_message_user_tag (folder, uids->pdata[i], "completed-on", now);
    }
    camel_folder_thaw (folder);
    
    g_free (now);
    
    em_utils_uids_free (uids);
}

#include "camel/camel-stream-mem.h"
#include "camel/camel-stream-filter.h"
#include "camel/camel-mime-filter-from.h"

/* This kind of sucks, because for various reasons most callers need to run synchronously
   in the gui thread, however this could take a long, blocking time, to run */
static int
em_utils_write_messages_to_stream(CamelFolder *folder, GPtrArray *uids, CamelStream *stream)
{
    CamelStreamFilter *filtered_stream;
    CamelMimeFilterFrom *from_filter;
    int i, res = 0;

    from_filter = camel_mime_filter_from_new();
    filtered_stream = camel_stream_filter_new_with_stream(stream);
    camel_stream_filter_add(filtered_stream, (CamelMimeFilter *)from_filter);
    camel_object_unref(from_filter);
    
    for (i=0; i<uids->len; i++) {
        CamelMimeMessage *message;
        char *from;

        message = camel_folder_get_message(folder, uids->pdata[i], NULL);
        if (message == NULL) {
            res = -1;
            break;
        }

        /* we need to flush after each stream write since we are writing to the same stream */
        from = camel_mime_message_build_mbox_from(message);

        if (camel_stream_write_string(stream, from) == -1
            || camel_stream_flush(stream) == -1
            || camel_data_wrapper_write_to_stream((CamelDataWrapper *)message, (CamelStream *)filtered_stream) == -1
            || camel_stream_flush((CamelStream *)filtered_stream) == -1)
            res = -1;
        
        g_free(from);
        camel_object_unref(message);

        if (res == -1)
            break;
    }

    camel_object_unref(filtered_stream);

    return res;
}

/* This kind of sucks, because for various reasons most callers need to run synchronously
   in the gui thread, however this could take a long, blocking time, to run */
static int
em_utils_read_messages_from_stream(CamelFolder *folder, CamelStream *stream)
{
    CamelException *ex = camel_exception_new();
    CamelMimeParser *mp = camel_mime_parser_new();
    int res = -1;

    camel_mime_parser_scan_from(mp, TRUE);
    camel_mime_parser_init_with_stream(mp, stream);
    camel_object_unref(stream);

    while (camel_mime_parser_step(mp, 0, 0) == CAMEL_MIME_PARSER_STATE_FROM) {
        CamelMimeMessage *msg;

        /* NB: de-from filter, once written */
        msg = camel_mime_message_new();
        if (camel_mime_part_construct_from_parser((CamelMimePart *)msg, mp) == -1) {
            camel_object_unref(msg);
            break;
        }
        
        camel_folder_append_message(folder, msg, NULL, NULL, ex);
        camel_object_unref(msg);
        
        if (camel_exception_is_set (ex))
            break;
        
        camel_mime_parser_step(mp, 0, 0);
    }
    
    camel_object_unref(mp);
    if (!camel_exception_is_set(ex))
        res = 0;
    camel_exception_free(ex);

    return res;
}

/**
 * em_utils_selection_set_mailbox:
 * @data: selection data
 * @folder: folder containign messages to copy into the selection
 * @uids: uids of the messages to copy into the selection
 * 
 * Creates a mailbox-format selection.
 * Warning: Could be BIG!
 * Warning: This could block the ui for an extended period.
 **/
void
em_utils_selection_set_mailbox(GtkSelectionData *data, CamelFolder *folder, GPtrArray *uids)
{
    CamelStream *stream;

    stream = camel_stream_mem_new();
    if (em_utils_write_messages_to_stream(folder, uids, stream) == 0)
        gtk_selection_data_set(data, data->target, 8,
                       ((CamelStreamMem *)stream)->buffer->data,
                       ((CamelStreamMem *)stream)->buffer->len);

    camel_object_unref(stream);
}

/**
 * em_utils_selection_get_mailbox:
 * @data: selection data
 * @folder: 
 * 
 * Receive a mailbox selection/dnd
 * Warning: Could be BIG!
 * Warning: This could block the ui for an extended period.
 * FIXME: Exceptions?
 **/
void
em_utils_selection_get_mailbox(GtkSelectionData *data, CamelFolder *folder)
{
    CamelStream *stream;

    if (data->data == NULL || data->length == -1)
        return;

    /* TODO: a stream mem with read-only access to existing data? */
    /* NB: Although copying would let us run this async ... which it should */
    stream = camel_stream_mem_new_with_buffer(data->data, data->length);
    em_utils_read_messages_from_stream(folder, stream);
    camel_object_unref(stream);
}

/**
 * em_utils_selection_set_uidlist:
 * @data: selection data
 * @uri:
 * @uids: 
 * 
 * Sets a "x-uid-list" format selection data.
 *
 * FIXME: be nice if this could take a folder argument rather than uri
 **/
void
em_utils_selection_set_uidlist(GtkSelectionData *data, const char *uri, GPtrArray *uids)
{
    GByteArray *array = g_byte_array_new();
    int i;

    /* format: "uri\0uid1\0uid2\0uid3\0...\0uidn\0" */
    
    g_byte_array_append(array, uri, strlen(uri)+1);

    for (i=0; i<uids->len; i++)
        g_byte_array_append(array, uids->pdata[i], strlen(uids->pdata[i])+1);
        
    gtk_selection_data_set(data, data->target, 8, array->data, array->len);
    g_byte_array_free(array, TRUE);
}

/**
 * em_utils_selection_get_uidlist:
 * @data: selection data
 * @urip: Pointer to uri string, to be free'd by caller
 * @uidsp: Pointer to an array of uid's.
 * 
 * Convert an x-uid-list type to a uri and a uid list.
 * 
 * Return value: The number of uid's found.  If 0, then @urip and
 * @uidsp will be empty.
 **/
int
em_utils_selection_get_uidlist(GtkSelectionData *data, char **urip, GPtrArray **uidsp)
{
    /* format: "uri\0uid1\0uid2\0uid3\0...\0uidn" */
    char *inptr, *inend;
    GPtrArray *uids;
    int res;

    *urip = NULL;
    *uidsp = NULL;

    if (data == NULL || data->data == NULL || data->length == -1)
        return 0;
    
    uids = g_ptr_array_new();

    inptr = data->data;
    inend = data->data + data->length;
    while (inptr < inend) {
        char *start = inptr;

        while (inptr < inend && *inptr)
            inptr++;

        if (start > (char *)data->data)
            g_ptr_array_add(uids, g_strndup(start, inptr-start));

        inptr++;
    }

    if (uids->len == 0) {
        g_ptr_array_free(uids, TRUE);
        res = 0;
    } else {
        *urip = g_strdup(data->data);
        *uidsp = uids;
        res = uids->len;
    }

    return res;
}

/**
 * em_utils_selection_set_urilist:
 * @data: 
 * @folder: 
 * @uids: 
 * 
 * Set the selection data @data to a uri which points to a file, which is
 * a berkely mailbox format mailbox.  The file is automatically cleaned
 * up when the application quits.
 **/
void
em_utils_selection_set_urilist(GtkSelectionData *data, CamelFolder *folder, GPtrArray *uids)
{
    const char *tmpdir;
    CamelStream *fstream;
    char *uri, *p, *file = NULL;
    int fd;
    CamelMessageInfo *info;

    tmpdir = e_mkdtemp("drag-n-drop-XXXXXX");
    if (tmpdir == NULL)
        return;

    /* Try to get the drop filename from the message or folder */
    if (uids->len == 1) {
        info = camel_folder_get_message_info(folder, uids->pdata[0]);
        if (info) {
            file = g_strdup(camel_message_info_subject(info));
            camel_folder_free_message_info(folder, info);
        }
    }

    /* TODO: Handle conflicts? */
    if (file == NULL) {
        /* Drop filename for messages from a mailbox */
        file = g_strdup_printf(_("Messages from %s"), folder->name);
    }

    e_filename_make_safe(file);

    p = uri = g_alloca (strlen (tmpdir) + strlen(file) + 16);
    p += sprintf (uri, "file:///%s/%s", tmpdir, file);
    g_free(file);
    
    fd = open(uri + 7, O_WRONLY | O_CREAT | O_EXCL, 0666);
    if (fd == -1)
        return;
    
    fstream = camel_stream_fs_new_with_fd(fd);
    if (fstream) {
        /* terminate with \r\n to be compliant with the spec */
        strcpy (p, "\r\n");
        
        if (em_utils_write_messages_to_stream(folder, uids, fstream) == 0)
            gtk_selection_data_set(data, data->target, 8, uri, strlen(uri));

        camel_object_unref(fstream);
    }
}

static void
emu_save_part_done(CamelMimePart *part, char *name, int done, void *data)
{
    ((int *)data)[0] = done;
}

/**
 * em_utils_temp_save_part:
 * @parent: 
 * @part: 
 * 
 * Save a part's content to a temporary file, and return the
 * filename.
 * 
 * Return value: NULL if anything failed.
 **/
char *
em_utils_temp_save_part(GtkWidget *parent, CamelMimePart *part)
{
    const char *tmpdir, *filename;
    char *path, *mfilename = NULL;
    int done;

    tmpdir = e_mkdtemp("evolution-tmp-XXXXXX");
    if (tmpdir == NULL) {
        e_notice(parent, GTK_MESSAGE_ERROR,
             _("Could not create temporary directory: %s"),
             g_strerror (errno));

        return NULL;
    }

    filename = camel_mime_part_get_filename (part);
    if (filename == NULL) {
        /* This is the default filename used for temporary file creation */
        filename = _("Unknown");
    } else {
        mfilename = g_strdup(filename);
        e_filename_make_safe(mfilename);
        filename = mfilename;
    }

    path = g_build_filename(tmpdir, filename, NULL);
    g_free(mfilename);

    /* FIXME: This doesn't handle default charsets */
    mail_msg_wait(mail_save_part(part, path, emu_save_part_done, &done));

    if (!done) {
        /* mail_save_part should popup an error box automagically */
        g_free(path);
        path = NULL;
    }

    return path;
}


/**
 * em_utils_folder_is_drafts:
 * @folder: folder
 * @uri: uri for this folder, if known
 *
 * Decides if @folder is a Drafts folder.
 * 
 * Returns %TRUE if this is a Drafts folder or %FALSE otherwise.
 **/
gboolean
em_utils_folder_is_drafts(CamelFolder *folder, const char *uri)
{
    EAccountList *accounts;
    EAccount *account;
    EIterator *iter;
    int is = FALSE;
    char *drafts_uri;
    
    if (folder == mail_component_get_folder(NULL, MAIL_COMPONENT_FOLDER_DRAFTS))
        return TRUE;

    if (uri == NULL)
        return FALSE;
    
    accounts = mail_config_get_accounts();
    iter = e_list_get_iterator((EList *)accounts);
    while (e_iterator_is_valid(iter)) {
        account = (EAccount *)e_iterator_get(iter);
        
        if (account->drafts_folder_uri) {
            drafts_uri = em_uri_to_camel (account->drafts_folder_uri);
            if (camel_store_folder_uri_equal (folder->parent_store, drafts_uri, uri)) {
                g_free (drafts_uri);
                is = TRUE;
                break;
            }
            g_free (drafts_uri);
        }
        
        e_iterator_next(iter);
    }
    
    g_object_unref(iter);
    
    return is;
}

/**
 * em_utils_folder_is_sent:
 * @folder: folder
 * @uri: uri for this folder, if known
 *
 * Decides if @folder is a Sent folder
 * 
 * Returns %TRUE if this is a Sent folder or %FALSE otherwise.
 **/
gboolean
em_utils_folder_is_sent(CamelFolder *folder, const char *uri)
{
    EAccountList *accounts;
    EAccount *account;
    EIterator *iter;
    int is = FALSE;
    char *sent_uri;
    
    if (folder == mail_component_get_folder(NULL, MAIL_COMPONENT_FOLDER_SENT))
        return TRUE;
    
    if (uri == NULL)
        return FALSE;
    
    accounts = mail_config_get_accounts();
    iter = e_list_get_iterator((EList *)accounts);
    while (e_iterator_is_valid(iter)) {
        account = (EAccount *)e_iterator_get(iter);
        
        if (account->sent_folder_uri) {
            sent_uri = em_uri_to_camel (account->sent_folder_uri);
            if (camel_store_folder_uri_equal (folder->parent_store, sent_uri, uri)) {
                g_free (sent_uri);
                is = TRUE;
                break;
            }
            g_free (sent_uri);
        }
        
        e_iterator_next(iter);
    }
    
    g_object_unref(iter);
    
    return is;
}

/**
 * em_utils_folder_is_outbox:
 * @folder: folder
 * @uri: uri for this folder, if known
 *
 * Decides if @folder is an Outbox folder
 * 
 * Returns %TRUE if this is an Outbox folder or %FALSE otherwise.
 **/
gboolean
em_utils_folder_is_outbox(CamelFolder *folder, const char *uri)
{
    /* <Highlander>There can be only one.</Highlander> */
    return folder == mail_component_get_folder(NULL, MAIL_COMPONENT_FOLDER_OUTBOX);
}

/**
 * em_utils_adjustment_page:
 * @adj: 
 * @down: 
 * 
 * Move an adjustment up/down forward/back one page.
 **/
void
em_utils_adjustment_page(GtkAdjustment *adj, gboolean down)
{
    float page_size = adj->page_size - adj->step_increment;

    if (down) {
        if (adj->value < adj->upper - adj->page_size - page_size)
            adj->value += page_size;
        else if (adj->upper >= adj->page_size)
            adj->value = adj->upper - adj->page_size;
        else
            adj->value = adj->lower;
    } else {
        if (adj->value > adj->lower + page_size)
            adj->value -= page_size;
        else
            adj->value = adj->lower;
    }

    gtk_adjustment_value_changed(adj);
}

/* ********************************************************************** */
static char *emu_proxy_uri;

static void
emu_set_proxy(GConfClient *client)
{
    char *server;
    int port;

    if (!gconf_client_get_bool(client, "/system/http_proxy/use_http_proxy", NULL)) {
        g_free(emu_proxy_uri);
        emu_proxy_uri = NULL;

        return;
    }

    /* TODO: Should lock ... */

    server = gconf_client_get_string(client, "/system/http_proxy/host", NULL);
    port = gconf_client_get_int(client, "/system/http_proxy/port", NULL);

    if (server && server[0]) {
        g_free(emu_proxy_uri);

        if (gconf_client_get_bool(client, "/system/http_proxy/use_authentication", NULL)) {
            char *user = gconf_client_get_string(client, "/system/http_proxy/authentication_user", NULL);
            char *pass = gconf_client_get_string(client, "/system/http_proxy/authentication_password", NULL);

            emu_proxy_uri = g_strdup_printf("http://%s:%s@%s:%d", user, pass, server, port);
            g_free(user);
            g_free(pass);
        } else {
            emu_proxy_uri = g_strdup_printf("http://%s:%d", server, port);
        }
    }

    g_free(server);
}

static void
emu_proxy_changed(GConfClient *client, guint32 cnxn_id, GConfEntry *entry, gpointer user_data)
{
    emu_set_proxy(client);
}

/**
 * em_utils_get_proxy_uri:
 * 
 * Get the system proxy uri.
 * 
 * Return value: Must be freed when finished with.
 **/
char *
em_utils_get_proxy_uri(void)
{
    static int init;

    if (!init) {
        GConfClient *client = gconf_client_get_default();

        gconf_client_add_dir(client, "/system/http_proxy", GCONF_CLIENT_PRELOAD_ONELEVEL, NULL);
        gconf_client_notify_add(client, "/system/http_proxy", emu_proxy_changed, NULL, NULL, NULL);
        emu_set_proxy(client);
        g_object_unref(client);
        init = TRUE;
    }

    return g_strdup(emu_proxy_uri);
}

/**
 * em_utils_part_to_html:
 * @part:
 *
 * Converts a mime part's contents into html text.  If @credits is given,
 * then it will be used as an attribution string, and the
 * content will be cited.  Otherwise no citation or attribution
 * will be performed.
 * 
 * Return Value: The part in displayable html format.
 **/
char *
em_utils_part_to_html(CamelMimePart *part)
{
    EMFormatQuote *emfq;
    CamelStreamMem *mem;
    GByteArray *buf;
    char *text;
    
    buf = g_byte_array_new ();
    mem = (CamelStreamMem *) camel_stream_mem_new ();
    camel_stream_mem_set_byte_array (mem, buf);
    
    emfq = em_format_quote_new(NULL, (CamelStream *)mem, 0);
    em_format_part((EMFormat *) emfq, (CamelStream *) mem, part);
    g_object_unref (emfq);
    
    camel_stream_write ((CamelStream *) mem, "", 1);
    camel_object_unref (mem);
    
    text = buf->data;
    g_byte_array_free (buf, FALSE);
    
    return text;
}

/**
 * em_utils_message_to_html:
 * @message: 
 * @credits: 
 * @flags: EMFormatQuote flags
 *
 * Convert a message to html, quoting if the @credits attribution
 * string is given.
 * 
 * Return value: The html version.
 **/
char *
em_utils_message_to_html(CamelMimeMessage *message, const char *credits, guint32 flags)
{
    EMFormatQuote *emfq;
    CamelStreamMem *mem;
    GByteArray *buf;
    char *text;
    
    buf = g_byte_array_new ();
    mem = (CamelStreamMem *) camel_stream_mem_new ();
    camel_stream_mem_set_byte_array (mem, buf);
    
    emfq = em_format_quote_new(credits, (CamelStream *)mem, flags);
    em_format_format((EMFormat *)emfq, NULL, NULL, message);
    g_object_unref (emfq);
    
    camel_stream_write ((CamelStream *) mem, "", 1);
    camel_object_unref (mem);
    
    text = buf->data;
    g_byte_array_free (buf, FALSE);
    
    return text;
}

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

/**
 * em_utils_expunge_folder:
 * @parent: parent window
 * @folder: folder to expunge
 *
 * Expunges @folder.
 **/
void
em_utils_expunge_folder (GtkWidget *parent, CamelFolder *folder)
{
    char *name;

    camel_object_get(folder, NULL, CAMEL_OBJECT_DESCRIPTION, &name, 0);

    if (!em_utils_prompt_user ((GtkWindow *) parent, GTK_RESPONSE_NO, 
                   "/apps/evolution/mail/prompts/expunge",
                   _("This operation will permanently remove all deleted messages "
                     "in the folder `%s'. If you continue, you "
                     "will not be able to recover these messages.\n"
                     "\nReally erase these messages?"), name))
        return;
    
    mail_expunge_folder(folder, NULL, NULL);
}

/**
 * em_utils_empty_trash:
 * @parent: parent window
 *
 * Empties all Trash folders.
 **/
void
em_utils_empty_trash (GtkWidget *parent)
{
    CamelProvider *provider;
    EAccountList *accounts;
    EAccount *account;
    EIterator *iter;
    CamelException ex;
    
    if (!em_utils_prompt_user ((GtkWindow *) parent, GTK_RESPONSE_NO, "/apps/evolution/mail/prompts/empty_trash",
                   _("This operation will permanently remove all deleted messages "
                     "in all folders. If you continue, you will not be able to "
                     "recover these messages.\n"
                     "\nReally erase these messages?")))
        return;
    
    camel_exception_init (&ex);
    
    /* expunge all remote stores */
    accounts = mail_config_get_accounts ();
    iter = e_list_get_iterator ((EList *) accounts);
    while (e_iterator_is_valid (iter)) {
        account = (EAccount *) e_iterator_get (iter);
        
        /* make sure this is a valid source */
        if (account->enabled && account->source->url) {
            provider = camel_provider_get(account->source->url, &ex);
            if (provider) {
                /* make sure this store is a remote store */
                if (provider->flags & CAMEL_PROVIDER_IS_STORAGE &&
                    provider->flags & CAMEL_PROVIDER_IS_REMOTE) {
                    mail_empty_trash (account, NULL, NULL);
                }
            }
            
            /* clear the exception for the next round */
            camel_exception_clear (&ex);
        }
        
        e_iterator_next (iter);
    }
    
    g_object_unref (iter);
    
    /* Now empty the local trash folder */
    mail_empty_trash (NULL, NULL, NULL);
}

char *
em_utils_folder_name_from_uri (const char *uri)
{
    CamelURL *url;
    char *folder_name = NULL;
    
    if (uri == NULL || (url = camel_url_new (uri, NULL)) == NULL)
        return NULL;
    
    if (url->fragment)
        folder_name = url->fragment;
    else if (url->path)
        folder_name = url->path + 1;
    
    if (folder_name == NULL) {
        camel_url_free (url);
        return NULL;
    }
    
    folder_name = g_strdup (folder_name);
    camel_url_free (url);
    
    return folder_name;
}

extern struct _CamelSession *session;

/* email: uri's are based on the account, with special cases for local
 * stores, vfolder and local mail.
 * e.g.
 *  imap account imap://user@host/ -> email://accountid@accountid.host/
 *  vfolder      vfolder:/storage/path#folder -> email://vfolder@local/folder
 *  local        local:/storage/path#folder   -> email://local@local/folder
 */

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

    /* Easiest solution to code that shouldnt be calling us */
    if (!strncmp(curi, "email:", 6))
        return g_strdup(curi);

    provider = camel_provider_get(curi, NULL);
    if (provider == NULL) {
        d(printf("em uri from camel failed '%s'\n", curi));
        return g_strdup(curi);
    }

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

    if (strcmp(curl->protocol, "vfolder") == 0)
        uid = "vfolder@local";
    else if ((account = mail_config_get_account_by_source_url(curi)) == NULL)
        uid = "local@local";
    else
        uid = account->uid;
    path = (provider->url_flags & CAMEL_URL_FRAGMENT_IS_PATH)?curl->fragment:curl->path;
    if (path[0] == '/')
        path++;

    tmp = camel_url_encode(path, ";?");
    euri = g_strdup_printf("email://%s/%s", uid, tmp);
    g_free(tmp);
    
    d(printf("em uri from camel '%s' -> '%s'\n", curi, euri));

    camel_url_free(curl);

    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;

    if (strncmp(euri, "email:", 6) != 0) {
        d(printf("em uri to camel not euri '%s'\n", euri));
        return g_strdup(euri);
    }

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

    g_assert(eurl->host != NULL);

    if (eurl->user != NULL) {
        /* Sigh, shoul'dve used mbox@local for mailboxes, not local@local */
        if (strcmp(eurl->host, "local") == 0
            && (strcmp(eurl->user, "local") == 0 || strcmp(eurl->user, "vfolder") == 0)) {
            char *base;

            if (strcmp(eurl->user, "vfolder") == 0)
                curl = camel_url_new("vfolder:", NULL);
            else
                curl = camel_url_new("mbox:", NULL);

            base = g_strdup_printf("%s/.evolution/mail/%s", g_get_home_dir(), eurl->user);
            camel_url_set_path(curl, base);
            g_free(base);
            camel_url_set_fragment(curl, eurl->path[0]=='/'?eurl->path+1:eurl->path);
            curi = camel_url_to_string(curl, 0);
            camel_url_free(curl);
            camel_url_free(eurl);

            d(printf("em uri to camel local '%s' -> '%s'\n", euri, curi));
            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);
        d(printf("em uri to camel no account '%s' -> '%s'\n", euri, euri));
        return g_strdup(euri);
    }

    service = account->source;
    if (!(provider = camel_provider_get (service->url, NULL)))
        return g_strdup (euri);
    
    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;
}

/* ********************************************************************** */
#include <libebook/e-book.h>

struct _addr_node {
    char *addr;
    time_t stamp;
    int found;
};

#define EMU_ADDR_CACHE_TIME (60*30) /* in seconds */

static GSList *emu_addr_sources;
static GHashTable *emu_addr_cache;

static void
emu_addr_sources_refresh(void)
{
    GError *err = NULL;
    ESourceList *list;
    GSList *g, *s, *groups, *sources;

    g_slist_foreach(emu_addr_sources, (GFunc)g_object_unref, NULL);
    g_slist_free(emu_addr_sources);
    emu_addr_sources = NULL;

    if (!e_book_get_addressbooks(&list, &err)) {
        g_error_free(err);
        return;
    }

    groups = e_source_list_peek_groups(list);
    for (g=groups;g;g=g_slist_next(g)) {
        sources = e_source_group_peek_sources((ESourceGroup *)g->data);
        for (s=sources;s;s=g_slist_next(s)) {
            emu_addr_sources = g_slist_prepend(emu_addr_sources, g_object_ref(s->data));
        }
    }

    g_object_unref(list);
}

gboolean
em_utils_in_addressbook(CamelInternetAddress *iaddr)
{
    GError *err = NULL;
    GSList *s;
    int found = FALSE;
    EBookQuery *query;
    const char *addr;
    struct _addr_node *node;
    time_t now;

    /* TODO: check all addresses? */
    if (!camel_internet_address_get(iaddr, 0, NULL, &addr))
        return FALSE;

    if (emu_addr_cache == NULL) {
        emu_addr_cache = g_hash_table_new(g_str_hash, g_str_equal);
        emu_addr_sources_refresh();
    }

    now = time(0);

    printf("Checking '%s' is in addressbook", addr);

    node = g_hash_table_lookup(emu_addr_cache, addr);
    if (node) {
        printf(" -> cached, found %s\n", node->found?"yes":"no");
        if (node->stamp + EMU_ADDR_CACHE_TIME > now)
            return node->found;
        printf("    but expired!\n");
    } else {
        printf(" -> not found in cache\n");
        node = g_malloc0(sizeof(*node));
        node->addr = g_strdup(addr);
    }

    query = e_book_query_field_test(E_CONTACT_EMAIL, E_BOOK_QUERY_IS, addr);

    for (s = emu_addr_sources;!found && s;s=g_slist_next(s)) {
        ESource *source = s->data;
        GList *contacts;
        EBook *book;

        book = e_book_new();

        printf(" checking '%s'\n", e_source_get_uri(source));

        if (!e_book_load_source(book, source, TRUE, &err)) {
            printf("couldn't load source?\n");
            g_clear_error(&err);
            g_object_unref(book);
            continue;
        }

        if (!e_book_get_contacts(book, query, &contacts, &err)) {
            printf("Can't get contacts?\n");
            g_clear_error(&err);
            g_object_unref(book);
            continue;
        }

        found = contacts != NULL;

        printf(" %s\n", found?"found":"not found");

        g_list_foreach(contacts, (GFunc)g_object_unref, NULL);
        g_list_free(contacts);

        g_object_unref(book);
    }

    e_book_query_unref(query);

    node->found = found;
    node->stamp = now;

    g_hash_table_insert(emu_addr_cache, node->addr, node);

    return found;
}