path: root/mail/mail-session.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* mail-session.c: handles the session information and resource manipulation */
/*
 *  Copyright 2001 Ximian, Inc. (www.ximian.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */

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

#include <stdlib.h>
#include <string.h>

#include <gtk/gtkdialog.h>
#include <gtk/gtkstock.h>
#include <gtk/gtkentry.h>
#include <gtk/gtkmessagedialog.h>
#include <gtk/gtktogglebutton.h>
#include <gtk/gtkbox.h>
#include <gtk/gtkcheckbutton.h>

#include <gconf/gconf-client.h>

#include <libgnome/gnome-config.h>
#include <libgnome/gnome-sound.h>

#include <camel/camel.h>    /* FIXME: this is where camel_init is defined, it shouldn't include everything else */
#include "camel/camel-filter-driver.h"

#include "filter/filter-context.h"
#include "filter/filter-filter.h"
#include "mail-component.h"
#include "mail-config.h"
#include "mail-session.h"
#include "mail-tools.h"
#include "mail-mt.h"
#include "mail-ops.h"
#include "e-util/e-passwords.h"
#include "e-util/e-msgport.h"
#include "em-junk-filter.h"
#include "widgets/misc/e-error.h"

#define d(x)

CamelSession *session;
static int session_check_junk_notify_id = -1;

#define MAIL_SESSION_TYPE     (mail_session_get_type ())
#define MAIL_SESSION(obj)     (CAMEL_CHECK_CAST((obj), MAIL_SESSION_TYPE, MailSession))
#define MAIL_SESSION_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), MAIL_SESSION_TYPE, MailSessionClass))
#define MAIL_IS_SESSION(o)    (CAMEL_CHECK_TYPE((o), MAIL_SESSION_TYPE))

#define MAIL_SESSION_LOCK(s, l) (e_mutex_lock(((MailSession *)s)->l))
#define MAIL_SESSION_UNLOCK(s, l) (e_mutex_unlock(((MailSession *)s)->l))

typedef struct _MailSession {
    CamelSession parent_object;

    gboolean interactive;
    FILE *filter_logfile;

    EMutex *lock;

    MailAsyncEvent *async;
} MailSession;

typedef struct _MailSessionClass {
    CamelSessionClass parent_class;

} MailSessionClass;

static CamelSessionClass *ms_parent_class;

static char *get_password(CamelSession *session, const char *prompt, guint32 flags, CamelService *service, const char *item, CamelException *ex);
static void forget_password(CamelSession *session, CamelService *service, const char *item, CamelException *ex);
static gboolean alert_user(CamelSession *session, CamelSessionAlertType type, const char *prompt, gboolean cancel);
static CamelFilterDriver *get_filter_driver(CamelSession *session, const char *type, CamelException *ex);

static void ms_thread_status(CamelSession *session, CamelSessionThreadMsg *msg, const char *text, int pc);
static void *ms_thread_msg_new(CamelSession *session, CamelSessionThreadOps *ops, unsigned int size);
static void ms_thread_msg_free(CamelSession *session, CamelSessionThreadMsg *m);

static void
init (MailSession *session)
{
    session->lock = e_mutex_new(E_MUTEX_REC);
    session->async = mail_async_event_new();
}

static void
finalise (MailSession *session)
{
    if (session_check_junk_notify_id != -1)
        gconf_client_notify_remove (mail_config_get_gconf_client (), session_check_junk_notify_id);

    mail_async_event_destroy(session->async);
    e_mutex_destroy(session->lock);
}

static void
class_init (MailSessionClass *mail_session_class)
{
    CamelSessionClass *camel_session_class = CAMEL_SESSION_CLASS (mail_session_class);
    
    /* virtual method override */
    camel_session_class->get_password = get_password;
    camel_session_class->forget_password = forget_password;
    camel_session_class->alert_user = alert_user;
    camel_session_class->get_filter_driver = get_filter_driver;

    camel_session_class->thread_msg_new = ms_thread_msg_new;
    camel_session_class->thread_msg_free = ms_thread_msg_free;
    camel_session_class->thread_status = ms_thread_status;
}

static CamelType
mail_session_get_type (void)
{
    static CamelType mail_session_type = CAMEL_INVALID_TYPE;
    
    if (mail_session_type == CAMEL_INVALID_TYPE) {
        ms_parent_class = (CamelSessionClass *)camel_session_get_type();
        mail_session_type = camel_type_register (
            camel_session_get_type (),
            "MailSession",
            sizeof (MailSession),
            sizeof (MailSessionClass),
            (CamelObjectClassInitFunc) class_init,
            NULL,
            (CamelObjectInitFunc) init,
            (CamelObjectFinalizeFunc) finalise);
    }
    
    return mail_session_type;
}


static char *
make_key (CamelService *service, const char *item)
{
    char *key;
    
    if (service)
        key = camel_url_to_string (service->url, CAMEL_URL_HIDE_PASSWORD | CAMEL_URL_HIDE_PARAMS);
    else
        key = g_strdup (item);
    
    return key;
}

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

static GtkDialog *password_dialog = NULL;
static EDList password_list = E_DLIST_INITIALISER(password_list);

struct _pass_msg {
    struct _mail_msg msg;
    
    CamelSession *session;
    const char *prompt;
    guint32 flags;
    CamelService *service;
    const char *item;
    CamelException *ex;
    
    char *service_url;
    char *key;
    
    EAccountService *config_service;
    GtkWidget *check;
    GtkWidget *entry;
    char *result;
    int ismain;
};

static void do_get_pass(struct _mail_msg *mm);

static void
pass_activate (GtkEntry *entry, void *data)
{
    if (password_dialog)
        gtk_dialog_response (password_dialog, GTK_RESPONSE_OK);
}

static void
pass_response (GtkDialog *dialog, int button, void *data)
{
    struct _pass_msg *m = data;
    
    switch (button) {
    case GTK_RESPONSE_OK:
    {
        gboolean cache, remember;
        
        m->result = g_strdup (gtk_entry_get_text ((GtkEntry *) m->entry));
        remember = cache = m->check ? gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (m->check)) : FALSE;
        
        if (m->service_url) {
            if (m->config_service) {
                mail_config_service_set_save_passwd (m->config_service, cache);
                
                /* set `cache' to TRUE because people don't want to have to
                   re-enter their passwords for this session even if they told
                   us not to cache their passwords in the dialog...*sigh* */
                cache = TRUE;
            }
        } else {
            /* we can't remember the password if it isn't for an account (pgp?) */
            remember = FALSE;
        }
        
        if (cache) {
            /* cache the password for the session */
            e_passwords_add_password (m->key, m->result);
            
            /* should we remember it between sessions? */
            if (remember)
                e_passwords_remember_password ("Mail", m->key);
        }
        break;
    }
    default:
        camel_exception_set (m->ex, CAMEL_EXCEPTION_USER_CANCEL, _("User canceled operation."));
        break;
    }

    gtk_widget_destroy ((GtkWidget *) dialog);

    password_dialog = NULL;
    e_msgport_reply ((EMsg *)m);
    
    if ((m = (struct _pass_msg *) e_dlist_remhead (&password_list)))
        do_get_pass ((struct _mail_msg *) m);
}

static void
request_password (struct _pass_msg *m)
{
    EAccount *mca = NULL;
    char *title;
    
    /* If we already have a password_dialog up, save this request till later */
    if (!m->ismain && password_dialog) {
        e_dlist_addtail (&password_list, (EDListNode *)m);
        return;
    }
    
    if (m->service_url) {
        if ((mca = mail_config_get_account_by_source_url (m->service_url)))
            m->config_service = mca->source;
        else if ((mca = mail_config_get_account_by_transport_url (m->service_url)))
            m->config_service = mca->transport;
    }
    
    if (mca)
        title = g_strdup_printf (_("Enter Password for %s"), mca->name);
    else
        title = g_strdup (_("Enter Password"));
    
    password_dialog = (GtkDialog *)e_error_new(NULL, "mail:ask-session-password", m->prompt, NULL);
    gtk_window_set_title (GTK_WINDOW (password_dialog), title);
    g_free (title);
    
    m->entry = gtk_entry_new ();
    gtk_entry_set_visibility ((GtkEntry *) m->entry, !(m->flags & CAMEL_SESSION_PASSWORD_SECRET));
    g_signal_connect (m->entry, "activate", G_CALLBACK (pass_activate), password_dialog);
    gtk_box_pack_start (GTK_BOX (GTK_DIALOG (password_dialog)->vbox), m->entry, TRUE, FALSE, 3);
    gtk_widget_show (m->entry);
    gtk_widget_grab_focus (m->entry);
    
    if ((m->flags & CAMEL_SESSION_PASSWORD_REPROMPT) && m->result) {
        gtk_entry_set_text ((GtkEntry *) m->entry, m->result);
        g_free (m->result);
        m->result = NULL;
    }

    /* static password, shouldn't be remembered between sessions,
       but will be remembered within the session beyond our control */
    if ((m->service_url == NULL || m->service != NULL)
        && (m->flags & CAMEL_SESSION_PASSWORD_STATIC) == 0) {
        m->check = gtk_check_button_new_with_mnemonic (m->service_url ? _("_Remember this password")
                                   : _("_Remember this password for the remainder of this session"));
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (m->check),
                          m->config_service ? m->config_service->save_passwd : FALSE);
        gtk_box_pack_start (GTK_BOX (GTK_DIALOG (password_dialog)->vbox), m->check, TRUE, FALSE, 3);
        gtk_widget_show (m->check);
    }
    
    if (m->ismain) {
        pass_response(password_dialog, gtk_dialog_run (password_dialog), m);
    } else {
        g_signal_connect (password_dialog, "response", G_CALLBACK (pass_response), m);
        gtk_widget_show ((GtkWidget *) password_dialog);
    }
}

static void
do_get_pass(struct _mail_msg *mm)
{
    struct _pass_msg *m = (struct _pass_msg *)mm;
    MailSession *mail_session = MAIL_SESSION (m->session);
    
    if (!strcmp (m->item, "popb4smtp_uri")) {
        char *url = camel_url_to_string (m->service->url, 0);
        EAccount *account = mail_config_get_account_by_transport_url (url);
        
        g_free(url);
        if (account)
            m->result = g_strdup(account->source->url);
    } else if (m->key) {
        m->result = e_passwords_get_password ("Mail", m->key);
        if (m->result == NULL || (m->flags & CAMEL_SESSION_PASSWORD_REPROMPT)) {
            if (mail_session->interactive) {
                request_password(m);
                return;
            }
        }
    }

    e_msgport_reply((EMsg *)mm);
}

static void
do_free_pass(struct _mail_msg *mm)
{
    struct _pass_msg *m = (struct _pass_msg *)mm;

    g_free(m->service_url);
    g_free(m->key);
}

static struct _mail_msg_op get_pass_op = {
    NULL,
    do_get_pass,
    NULL,
    do_free_pass,
};

static char *
get_password (CamelSession *session, const char *prompt, guint32 flags,
          CamelService *service, const char *item, CamelException *ex)
{
    struct _pass_msg *m, *r;
    EMsgPort *pass_reply;
    char *ret;
    
    /* We setup an async request and send it off, and wait for it to return */
    /* If we're really in main, we dont of course ...
       ... but this shouldn't be allowed because of locking issues */
    pass_reply = e_msgport_new ();
    m = mail_msg_new(&get_pass_op, pass_reply, sizeof(struct _pass_msg));
    m->ismain = pthread_self() == mail_gui_thread;
    m->session = session;
    m->prompt = prompt;
    m->flags = flags;
    m->service = service;
    m->item = item;
    m->ex = ex;
    if (service)
        m->service_url = camel_url_to_string (service->url, CAMEL_URL_HIDE_ALL);
    m->key = make_key(service, item);

    if (m->ismain) {
        do_get_pass((struct _mail_msg *)m);
    } else {
        extern EMsgPort *mail_gui_port2;
        
        e_msgport_put(mail_gui_port2, (EMsg *)m);
    }
    
    e_msgport_wait(pass_reply);
    r = (struct _pass_msg *)e_msgport_get(pass_reply);
    g_assert(m == r);

    ret = m->result;
    mail_msg_free(m);
    e_msgport_destroy(pass_reply);
    
    return ret;
}

static void
main_forget_password (CamelSession *session, CamelService *service, const char *item, CamelException *ex)
{
    char *key = make_key (service, item);
    
    e_passwords_forget_password ("Mail", key);
    
    g_free (key);
}

static void
forget_password (CamelSession *session, CamelService *service, const char *item, CamelException *ex)
{
    mail_call_main(MAIL_CALL_p_pppp, (MailMainFunc)main_forget_password,
               session, service, item, ex);
}

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

static GtkDialog *message_dialog;
static EDList message_list = E_DLIST_INITIALISER(message_list);

struct _user_message_msg {
    struct _mail_msg msg;

    CamelSessionAlertType type;
    const char *prompt;

    unsigned int allow_cancel:1;
    unsigned int result:1;
    unsigned int ismain:1;
};

static void do_user_message (struct _mail_msg *mm);

/* clicked, send back the reply */
static void
user_message_response (GtkDialog *dialog, int button, struct _user_message_msg *m)
{
    gtk_widget_destroy ((GtkWidget *) dialog);
    
    message_dialog = NULL;
    
    /* if !allow_cancel, then we've already replied */
    if (m->allow_cancel) {
        m->result = button == GTK_RESPONSE_OK;
        e_msgport_reply((EMsg *)m);
    }
    
    /* check for pendings */
    if ((m = (struct _user_message_msg *)e_dlist_remhead(&message_list)))
        do_user_message((struct _mail_msg *)m);
}

static void
user_message_destroy_notify (struct _user_message_msg *m, GObject *deadbeef)
{
    message_dialog = NULL;
}

/* This is kinda ugly/inefficient, but oh well, it works */
static const char *error_type[] = {
    "mail:session-message-info", "mail:session-message-warning", "mail:session-message-error",
    "mail:session-message-info-cancel", "mail:session-message-warning-cancel", "mail:session-message-error-cancel"
};

static void
do_user_message (struct _mail_msg *mm)
{
    struct _user_message_msg *m = (struct _user_message_msg *)mm;
    int type;
    
    if (!m->ismain && message_dialog != NULL) {
        e_dlist_addtail (&message_list, (EDListNode *)m);
        return;
    }
    
    switch (m->type) {
    case CAMEL_SESSION_ALERT_INFO:
        type = 0;
        break;
    case CAMEL_SESSION_ALERT_WARNING:
        type = 1;
        break;
    case CAMEL_SESSION_ALERT_ERROR:
        type = 2;
        break;
    default:
        type = 0;
    }

    if (m->allow_cancel)
        type += 3;
    
    message_dialog = (GtkDialog *)e_error_new(NULL, error_type[type], m->prompt, NULL);
    g_object_set ((GObject *) message_dialog, "allow_shrink", TRUE, "allow_grow", TRUE, NULL);
    
    /* We only need to wait for the result if we allow cancel otherwise show but send result back instantly */
    if (m->allow_cancel) {
        if (m->ismain) {
            user_message_response(message_dialog, gtk_dialog_run (message_dialog), m);
        } else {
            g_signal_connect (message_dialog, "response", G_CALLBACK (user_message_response), m);
            gtk_widget_show ((GtkWidget *) message_dialog);
        }
    } else {
        g_signal_connect (message_dialog, "response", G_CALLBACK (gtk_widget_destroy), message_dialog);
        g_object_weak_ref ((GObject *) message_dialog, (GWeakNotify) user_message_destroy_notify, m);
        gtk_widget_show ((GtkWidget *) message_dialog);
        m->result = TRUE;
        e_msgport_reply ((EMsg *)m);
    }
}

static struct _mail_msg_op user_message_op = { NULL, do_user_message, NULL, NULL };

static gboolean
alert_user(CamelSession *session, CamelSessionAlertType type, const char *prompt, gboolean cancel)
{
    MailSession *mail_session = MAIL_SESSION (session);
    struct _user_message_msg *m, *r;
    EMsgPort *user_message_reply;
    gboolean ret;

    if (!mail_session->interactive)
        return FALSE;

    user_message_reply = e_msgport_new ();  
    m = mail_msg_new (&user_message_op, user_message_reply, sizeof (*m));
    m->ismain = pthread_self() == mail_gui_thread;
    m->type = type;
    m->prompt = prompt;
    m->allow_cancel = cancel;

    if (m->ismain)
        do_user_message((struct _mail_msg *)m);
    else {
        extern EMsgPort *mail_gui_port2;

        e_msgport_put(mail_gui_port2, (EMsg *)m);
    }

    e_msgport_wait(user_message_reply);
    r = (struct _user_message_msg *)e_msgport_get(user_message_reply);
    g_assert(m == r);

    ret = m->result;
    mail_msg_free(m);
    e_msgport_destroy(user_message_reply);

    return ret;
}

static CamelFolder *
get_folder (CamelFilterDriver *d, const char *uri, void *data, CamelException *ex)
{
    return mail_tool_uri_to_folder(uri, 0, ex);
}

static void
main_play_sound (CamelFilterDriver *driver, char *filename, gpointer user_data)
{
    if (filename && *filename)
        gnome_sound_play (filename);
    else
        gdk_beep ();
    
    g_free (filename);
    camel_object_unref (session);
}

static void
session_play_sound (CamelFilterDriver *driver, const char *filename, gpointer user_data)
{
    MailSession *ms = (MailSession *) session;
    
    camel_object_ref (session);
    
    mail_async_event_emit (ms->async, MAIL_ASYNC_GUI, (MailAsyncFunc) main_play_sound,
                   driver, g_strdup (filename), user_data);
}

static void
main_system_beep (CamelFilterDriver *driver, gpointer user_data)
{
    gdk_beep ();
}

static void
session_system_beep (CamelFilterDriver *driver, gpointer user_data)
{
    MailSession *ms = (MailSession *) session;
    
    camel_object_ref (session);
    
    mail_async_event_emit (ms->async, MAIL_ASYNC_GUI, (MailAsyncFunc) main_system_beep,
                   driver, user_data, NULL);
}

static CamelFilterDriver *
main_get_filter_driver (CamelSession *session, const char *type, CamelException *ex)
{
    CamelFilterDriver *driver;
    FilterRule *rule = NULL;
    char *user, *system;
    GConfClient *gconf;
    RuleContext *fc;
    
    gconf = mail_config_get_gconf_client ();
    
    user = g_strdup_printf ("%s/mail/filters.xml", mail_component_peek_base_directory (mail_component_peek ()));
    system = EVOLUTION_PRIVDATADIR "/filtertypes.xml";
    fc = (RuleContext *) filter_context_new ();
    rule_context_load (fc, system, user);
    g_free (user);
    
    driver = camel_filter_driver_new (session);
    camel_filter_driver_set_folder_func (driver, get_folder, NULL);
    
    if (gconf_client_get_bool (gconf, "/apps/evolution/mail/filters/log", NULL)) {
        MailSession *ms = (MailSession *) session;
        
        if (ms->filter_logfile == NULL) {
            char *filename;
            
            filename = gconf_client_get_string (gconf, "/apps/evolution/mail/filters/logfile", NULL);
            if (filename) {
                ms->filter_logfile = fopen (filename, "a+");
                g_free (filename);
            }
        }
        
        if (ms->filter_logfile)
            camel_filter_driver_set_logfile (driver, ms->filter_logfile);
    }
    
    camel_filter_driver_set_shell_func (driver, mail_execute_shell_command, NULL);
    camel_filter_driver_set_play_sound_func (driver, session_play_sound, NULL);
    camel_filter_driver_set_system_beep_func (driver, session_system_beep, NULL);

    if ((!strcmp (type, FILTER_SOURCE_INCOMING) || !strcmp (type, FILTER_SOURCE_JUNKTEST))
        && camel_session_check_junk (session)) {
        /* implicit junk check as 1st rule */
        camel_filter_driver_add_rule (driver, "Junk check", "(junk-test)", "(begin (set-system-flag \"junk\")(set-system-flag \"seen\"))");
    }

    if (strcmp (type, FILTER_SOURCE_JUNKTEST) != 0) {
        GString *fsearch, *faction;
        
        fsearch = g_string_new ("");
        faction = g_string_new ("");
        
        if (!strcmp (type, FILTER_SOURCE_DEMAND))
            type = FILTER_SOURCE_INCOMING;
        
        /* add the user-defined rules next */
        while ((rule = rule_context_next_rule (fc, rule, type))) {
            g_string_truncate (fsearch, 0);
            g_string_truncate (faction, 0);
        
            filter_rule_build_code (rule, fsearch);
            filter_filter_build_action ((FilterFilter *) rule, faction);
            camel_filter_driver_add_rule (driver, rule->name, fsearch->str, faction->str);
        }
        
        g_string_free (fsearch, TRUE);
        g_string_free (faction, TRUE);
    }
    
    g_object_unref (fc);
    
    return driver;
}

static CamelFilterDriver *
get_filter_driver (CamelSession *session, const char *type, CamelException *ex)
{
    return (CamelFilterDriver *) mail_call_main (MAIL_CALL_p_ppp, (MailMainFunc) main_get_filter_driver,
                             session, type, ex);
}

/* TODO: This is very temporary, until we have a better way to do the progress reporting,
   we just borrow a dummy mail-mt thread message and hook it onto out camel thread message */

static mail_msg_op_t ms_thread_ops_dummy = { NULL };

static void *ms_thread_msg_new(CamelSession *session, CamelSessionThreadOps *ops, unsigned int size)
{
    CamelSessionThreadMsg *msg = ms_parent_class->thread_msg_new(session, ops, size);

    /* We create a dummy mail_msg, and then copy its cancellation port over to ours, so
       we get cancellation and progress in common with hte existing mail code, for free */
    if (msg) {
        struct _mail_msg *m = mail_msg_new(&ms_thread_ops_dummy, NULL, sizeof(struct _mail_msg));

        msg->data = m;
        camel_operation_unref(msg->op);
        msg->op = m->cancel;
        camel_operation_ref(msg->op);
    }

    return msg;
}

static void ms_thread_msg_free(CamelSession *session, CamelSessionThreadMsg *m)
{
    mail_msg_free(m->data);
    ms_parent_class->thread_msg_free(session, m);
}

static void ms_thread_status(CamelSession *session, CamelSessionThreadMsg *msg, const char *text, int pc)
{
    /* This should never be called since we bypass it in alloc! */
    printf("Thread status '%s' %d%%\n", text, pc);
}

char *
mail_session_get_password (const char *url_string)
{
    CamelURL *url;
    char *simple_url;
    char *passwd;
    
    url = camel_url_new (url_string, NULL);
    simple_url = camel_url_to_string (url, CAMEL_URL_HIDE_PASSWORD | CAMEL_URL_HIDE_PARAMS);
    camel_url_free (url);
    
    passwd = e_passwords_get_password ("Mail", simple_url);
    
    g_free (simple_url);
    
    return passwd;
}

void
mail_session_add_password (const char *url_string,
               const char *passwd)
{
    CamelURL *url;
    char *simple_url;
    
    url = camel_url_new (url_string, NULL);
    simple_url = camel_url_to_string (url, CAMEL_URL_HIDE_PASSWORD | CAMEL_URL_HIDE_PARAMS);
    camel_url_free (url);
    
    e_passwords_add_password (simple_url, passwd);
    
    g_free (simple_url);
}

void
mail_session_remember_password (const char *url_string)
{
    CamelURL *url;
    char *simple_url;
    
    url = camel_url_new (url_string, NULL);
    simple_url = camel_url_to_string (url, CAMEL_URL_HIDE_PASSWORD | CAMEL_URL_HIDE_PARAMS);
    camel_url_free (url);
    
    e_passwords_remember_password ("Mail", simple_url);
    
    g_free (simple_url);
}

void
mail_session_forget_password (const char *key)
{
    e_passwords_forget_password ("Mail", key);
}

static void
mail_session_check_junk_notify (GConfClient *gconf, guint id, GConfEntry *entry, CamelSession *session)
{
    gchar *key;

    g_return_if_fail (gconf_entry_get_key (entry) != NULL);
    g_return_if_fail (gconf_entry_get_value (entry) != NULL);

    key = strrchr (gconf_entry_get_key (entry), '/');
    if (key) {
        key ++;
        if (!strcmp (key, "check_incoming"))
            camel_session_set_check_junk (session, gconf_value_get_bool (gconf_entry_get_value (entry)));
    }
}

void
mail_session_init (const char *base_directory)
{
    char *camel_dir;
    GConfClient *gconf;
    
    if (camel_init (base_directory, TRUE) != 0)
        exit (0);
    
    session = CAMEL_SESSION (camel_object_new (MAIL_SESSION_TYPE));
    
    camel_dir = g_strdup_printf ("%s/mail", base_directory);
    camel_session_construct (session, camel_dir);

    gconf = mail_config_get_gconf_client ();
    gconf_client_add_dir (gconf, "/apps/evolution/mail/junk", GCONF_CLIENT_PRELOAD_ONELEVEL, NULL);
    camel_session_set_check_junk (session, gconf_client_get_bool (gconf, "/apps/evolution/mail/junk/check_incoming", NULL));
    session_check_junk_notify_id = gconf_client_notify_add (gconf, "/apps/evolution/mail/junk",
                                (GConfClientNotifyFunc) mail_session_check_junk_notify,
                                session, NULL, NULL);
    session->junk_plugin = CAMEL_JUNK_PLUGIN (em_junk_filter_get_plugin ());

    /* The shell will tell us to go online. */
    camel_session_set_online ((CamelSession *) session, FALSE);
    
    g_free (camel_dir);
}

gboolean
mail_session_get_interactive (void)
{
    return MAIL_SESSION (session)->interactive;
}

void
mail_session_set_interactive (gboolean interactive)
{
    MAIL_SESSION (session)->interactive = interactive;
    
    if (!interactive) {
        struct _pass_msg *pm;
        struct _user_message_msg *um;
        
        d(printf ("Gone non-interactive, checking for outstanding interactive tasks\n"));
        
        /* clear out pending password requests */
        while ((pm = (struct _pass_msg *) e_dlist_remhead (&password_list))) {
            d(printf ("Flushing password request : %s\n", pm->prompt));
            e_msgport_reply ((EMsg *) pm);
        }
        
        /* destroy the current */
        if (password_dialog) {
            d(printf ("Destroying password dialogue\n"));
            gtk_widget_destroy ((GtkWidget *) password_dialog);
            password_dialog =  NULL;
        }
        
        /* same for pending user messages */
        while ((um = (struct _user_message_msg *) e_dlist_remhead (&message_list))) {
            d(printf ("Flusing message request: %s\n", um->prompt));
            e_msgport_reply((EMsg *) um);
        }
        
        /* and the current */
        if (message_dialog) {
            d(printf("Destroying message dialogue\n"));
            gtk_widget_destroy ((GtkWidget *) message_dialog);
        }
    }
}

void
mail_session_forget_passwords (BonoboUIComponent *uih, void *user_data,
                   const char *path)
{
    e_passwords_forget_passwords ();
}

void
mail_session_flush_filter_log (void)
{
    MailSession *ms = (MailSession *) session;
    
    if (ms->filter_logfile)
        fflush (ms->filter_logfile);
}