path: root/mail/mail-session.c

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *   Jonathon Jongsma <jonathon.jongsma@collabora.co.uk>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 * Copyright (C) 2009 Intel Corporation
 *
 */

/* mail-session.c: handles the session information and resource manipulation */

#include <config.h>

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

#include <glib.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>

#include <gtk/gtk.h>

#include <gconf/gconf-client.h>

#ifdef HAVE_CANBERRA
#include <canberra-gtk.h>
#endif

#include <libedataserverui/e-passwords.h>
#include <libedataserver/e-flag.h>

#include "e-util/e-util.h"
#include "e-util/e-alert-dialog.h"
#include "e-util/e-util-private.h"

#include "em-composer-utils.h"
#include "em-filter-context.h"
#include "em-filter-rule.h"
#include "em-utils.h"
#include "e-mail-local.h"
#include "mail-config.h"
#include "mail-mt.h"
#include "mail-ops.h"
#include "mail-send-recv.h"
#include "mail-session.h"
#include "mail-tools.h"

#define d(x)

CamelSession *session;
static guint session_check_junk_notify_id;
static guint session_gconf_proxy_id;

#define MAIL_TYPE_SESSION \
    (mail_session_get_type ())

typedef struct _MailSession MailSession;
typedef struct _MailSessionClass MailSessionClass;

struct _MailSession {
    CamelSession parent_object;

    gboolean interactive;
    FILE *filter_logfile;
    GList *junk_plugins;

    MailAsyncEvent *async;
};

struct _MailSessionClass {
    CamelSessionClass parent_class;
};

static gchar *mail_data_dir;
static gchar *mail_config_dir;

static gchar *get_password(CamelSession *session, CamelService *service, const gchar *domain, const gchar *prompt, const gchar *item, guint32 flags, GError **error);
static gboolean forget_password(CamelSession *session, CamelService *service, const gchar *domain, const gchar *item, GError **error);
static gboolean alert_user(CamelSession *session, CamelSessionAlertType type, const gchar *prompt, gboolean cancel);
static CamelFilterDriver *get_filter_driver(CamelSession *session, const gchar *type, GError **error);
static gboolean lookup_addressbook(CamelSession *session, const gchar *name);

static void ms_thread_status(CamelSession *session, CamelSessionThreadMsg *msg, const gchar *text, gint pc);
static gpointer ms_thread_msg_new(CamelSession *session, CamelSessionThreadOps *ops, guint size);
static void ms_thread_msg_free(CamelSession *session, CamelSessionThreadMsg *m);
static gboolean ms_forward_to (CamelSession *session, CamelFolder *folder, CamelMimeMessage *message, const gchar *address, GError **error);

GType mail_session_get_type (void);

G_DEFINE_TYPE (MailSession, mail_session, CAMEL_TYPE_SESSION)

static void
mail_session_finalize (GObject *object)
{
    MailSession *session = (MailSession *) object;
    GConfClient *client;

    client = mail_config_get_gconf_client ();

    if (session_check_junk_notify_id != 0) {
        gconf_client_notify_remove (client, session_check_junk_notify_id);
        session_check_junk_notify_id = 0;
    }

    if (session_gconf_proxy_id != 0) {
        gconf_client_notify_remove (client, session_gconf_proxy_id);
        session_gconf_proxy_id = 0;
    }

    mail_async_event_destroy(session->async);

    g_free (mail_data_dir);
    g_free (mail_config_dir);

    /* Chain up to parent's finalize() method. */
    G_OBJECT_CLASS (mail_session_parent_class)->finalize (object);
}

static void
mail_session_class_init (MailSessionClass *class)
{
    GObjectClass *object_class;
    CamelSessionClass *session_class;

    object_class = G_OBJECT_CLASS (class);
    object_class->finalize = mail_session_finalize;

    session_class = CAMEL_SESSION_CLASS (class);
    session_class->get_password = get_password;
    session_class->forget_password = forget_password;
    session_class->alert_user = alert_user;
    session_class->get_filter_driver = get_filter_driver;
    session_class->lookup_addressbook = lookup_addressbook;
    session_class->thread_msg_new = ms_thread_msg_new;
    session_class->thread_msg_free = ms_thread_msg_free;
    session_class->thread_status = ms_thread_status;
    session_class->forward_to = ms_forward_to;
}

static void
mail_session_init (MailSession *session)
{
    session->async = mail_async_event_new();
    session->junk_plugins = NULL;
}

static gchar *
make_key (CamelService *service, const gchar *item)
{
    gchar *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 gchar *
get_password (CamelSession *session,
              CamelService *service,
              const gchar *domain,
              const gchar *prompt,
              const gchar *item,
              guint32 flags,
              GError **error)
{
    gchar *url;
    gchar *ret = NULL;
    EAccount *account = NULL;

    url = service?camel_url_to_string(service->url, CAMEL_URL_HIDE_ALL):NULL;

    if (!strcmp(item, "popb4smtp_uri")) {
        /* not 100% mt safe, but should be ok */
        if (url
            && (account = mail_config_get_account_by_transport_url(url)))
            ret = g_strdup(account->source->url);
        else
            ret = g_strdup(url);
    } else {
        gchar *key = make_key(service, item);
        EAccountService *config_service = NULL;

        if (domain == NULL)
            domain = "Mail";

        ret = e_passwords_get_password(domain, key);
        if (ret == NULL || (flags & CAMEL_SESSION_PASSWORD_REPROMPT)) {
            gboolean remember;

            if (url) {
                if  ((account = mail_config_get_account_by_source_url(url)))
                    config_service = account->source;
                else if ((account = mail_config_get_account_by_transport_url(url)))
                    config_service = account->transport;
            }

            remember = config_service?config_service->save_passwd:FALSE;

            if (!config_service || (config_service && !config_service->get_password_canceled)) {
                guint32 eflags;
                gchar *title;

                if (flags & CAMEL_SESSION_PASSPHRASE) {
                    if (account)
                        title = g_strdup_printf (_("Enter Passphrase for %s"), account->name);
                    else
                        title = g_strdup (_("Enter Passphrase"));
                } else {
                    if (account)
                        title = g_strdup_printf (_("Enter Password for %s"), account->name);
                    else
                        title = g_strdup (_("Enter Password"));
                }
                if ((flags & CAMEL_SESSION_PASSWORD_STATIC) != 0)
                    eflags = E_PASSWORDS_REMEMBER_NEVER;
                else if (config_service == NULL)
                    eflags = E_PASSWORDS_REMEMBER_SESSION;
                else
                    eflags = E_PASSWORDS_REMEMBER_FOREVER;

                if (flags & CAMEL_SESSION_PASSWORD_REPROMPT)
                    eflags |= E_PASSWORDS_REPROMPT;

                if (flags & CAMEL_SESSION_PASSWORD_SECRET)
                    eflags |= E_PASSWORDS_SECRET;

                if (flags & CAMEL_SESSION_PASSPHRASE)
                    eflags |= E_PASSWORDS_PASSPHRASE;

                /* HACK: breaks abstraction ...
                   e_account_writable doesn't use the eaccount, it also uses the same writable key for
                   source and transport */
                if (!e_account_writable(NULL, E_ACCOUNT_SOURCE_SAVE_PASSWD))
                    eflags |= E_PASSWORDS_DISABLE_REMEMBER;

                ret = e_passwords_ask_password(title, domain, key, prompt, eflags, &remember, NULL);

                g_free(title);

                if (ret && config_service)
                    mail_config_service_set_save_passwd(config_service, remember);

                if (config_service)
                    config_service->get_password_canceled = ret == NULL;
            }
        }

        g_free(key);
    }

    g_free(url);

    if (ret == NULL)
        g_set_error (
            error, G_IO_ERROR,
            G_IO_ERROR_CANCELLED,
            _("User canceled operation."));

    return ret;
}

static gboolean
forget_password (CamelSession *session,
                 CamelService *service,
                 const gchar *domain,
                 const gchar *item,
                 GError **error)
{
    gchar *key = make_key (service, item);

    e_passwords_forget_password (domain?domain:"Mail", key);
    g_free (key);

    return TRUE;
}

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

static gpointer user_message_dialog;
static GQueue user_message_queue = { NULL, NULL, 0 };

struct _user_message_msg {
    MailMsg base;

    CamelSessionAlertType type;
    gchar *prompt;
    EFlag *done;

    guint allow_cancel:1;
    guint result:1;
    guint ismain:1;
};

static void user_message_exec (struct _user_message_msg *m);

static void
user_message_response_free (GtkDialog *dialog, gint button, struct _user_message_msg *m)
{
    gtk_widget_destroy ((GtkWidget *) dialog);

    user_message_dialog = NULL;

    /* check for pendings */
    if (!g_queue_is_empty (&user_message_queue)) {
        m = g_queue_pop_head (&user_message_queue);
        user_message_exec (m);
        mail_msg_unref (m);
    }
}

/* clicked, send back the reply */
static void
user_message_response (GtkDialog *dialog, gint button, struct _user_message_msg *m)
{
    /* if !allow_cancel, then we've already replied */
    if (m->allow_cancel) {
        m->result = button == GTK_RESPONSE_OK;
        e_flag_set (m->done);
    }

    user_message_response_free (dialog, button, m);
}

static void
user_message_exec (struct _user_message_msg *m)
{
    GtkWindow *parent;
    const gchar *error_type;

    if (!m->ismain && user_message_dialog != NULL) {
        g_queue_push_tail (&user_message_queue, mail_msg_ref (m));
        return;
    }

    switch (m->type) {
        case CAMEL_SESSION_ALERT_INFO:
            error_type = m->allow_cancel ?
                "mail:session-message-info-cancel" :
                "mail:session-message-info";
            break;
        case CAMEL_SESSION_ALERT_WARNING:
            error_type = m->allow_cancel ?
                "mail:session-message-warning-cancel" :
                "mail:session-message-warning";
            break;
        case CAMEL_SESSION_ALERT_ERROR:
            error_type = m->allow_cancel ?
                "mail:session-message-error-cancel" :
                "mail:session-message-error";
            break;
        default:
            error_type = NULL;
            g_return_if_reached ();
    }

    /* Pull in the active window from the shell to get a parent window */
    parent = e_shell_get_active_window (e_shell_get_default ());
    user_message_dialog =
        e_alert_dialog_new_for_args (parent, error_type, m->prompt, NULL);
    g_object_set (
        user_message_dialog, "allow_shrink", TRUE,
        "allow_grow", TRUE, NULL);

    /* Use the number of dialog buttons as a heuristic for whether to
     * emit a status bar message or present the dialog immediately, the
     * thought being if there's more than one button then something is
     * probably blocked until the user responds. */
    if (e_alert_dialog_count_buttons (user_message_dialog) > 1) {
        if (m->ismain) {
            gint response;

            response = gtk_dialog_run (user_message_dialog);
            user_message_response (
                user_message_dialog, response, m);
        } else {
            g_signal_connect (
                user_message_dialog, "response",
                G_CALLBACK (user_message_response), m);
            gtk_widget_show (user_message_dialog);
        }
    } else {
        g_signal_connect (
            user_message_dialog, "response",
            G_CALLBACK (user_message_response_free), m);
        g_object_set_data (
            user_message_dialog, "response-handled",
            GINT_TO_POINTER (TRUE));
        em_utils_show_error_silent (user_message_dialog);
    }
}

static void
user_message_free (struct _user_message_msg *m)
{
    g_free (m->prompt);
    e_flag_free (m->done);
}

static MailMsgInfo user_message_info = {
    sizeof (struct _user_message_msg),
    (MailMsgDescFunc) NULL,
    (MailMsgExecFunc) user_message_exec,
    (MailMsgDoneFunc) NULL,
    (MailMsgFreeFunc) user_message_free
};

static gboolean
lookup_addressbook(CamelSession *session, const gchar *name)
{
    CamelInternetAddress *addr;
    gboolean ret;

    if (!mail_config_get_lookup_book ())
        return FALSE;

    addr = camel_internet_address_new ();
    camel_address_decode ((CamelAddress *)addr, name);
    ret = em_utils_in_addressbook (addr, mail_config_get_lookup_book_local_only ());
    g_object_unref (addr);

    return ret;
}

static gboolean
alert_user(CamelSession *session, CamelSessionAlertType type, const gchar *prompt, gboolean cancel)
{
    struct _user_message_msg *m;
    gboolean result = TRUE;

    m = mail_msg_new (&user_message_info);
    m->ismain = mail_in_main_thread ();
    m->type = type;
    m->prompt = g_strdup (prompt);
    m->done = e_flag_new ();
    m->allow_cancel = cancel;

    if (cancel)
        mail_msg_ref (m);

    if (m->ismain)
        user_message_exec (m);
    else
        mail_msg_main_loop_push (m);

    if (cancel) {
        e_flag_wait (m->done);
        result = m->result;
        mail_msg_unref (m);
    } else if (m->ismain)
        mail_msg_unref (m);

    return result;
}

static CamelFolder *
get_folder (CamelFilterDriver *d,
            const gchar *uri,
            gpointer data,
            GError **error)
{
    return mail_tool_uri_to_folder (uri, 0, error);
}

static void
main_play_sound (CamelFilterDriver *driver, gchar *filename, gpointer user_data)
{
    if (filename && *filename) {
#ifdef HAVE_CANBERRA
        ca_context_play(ca_gtk_context_get(), 0,
                CA_PROP_MEDIA_FILENAME, filename,
                NULL);
#endif
    } else
        gdk_beep ();

    g_free (filename);
    g_object_unref (session);
}

static void
session_play_sound (CamelFilterDriver *driver, const gchar *filename, gpointer user_data)
{
    MailSession *ms = (MailSession *) session;

    g_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 ();
    g_object_unref (session);
}

static void
session_system_beep (CamelFilterDriver *driver, gpointer user_data)
{
    MailSession *ms = (MailSession *) session;

    g_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 gchar *type, GError **error)
{
    CamelFilterDriver *driver;
    EFilterRule *rule = NULL;
    const gchar *config_dir;
    gchar *user, *system;
    GConfClient *gconf;
    ERuleContext *fc;

    gconf = mail_config_get_gconf_client ();

    config_dir = mail_session_get_config_dir ();
    user = g_build_filename (config_dir, "filters.xml", NULL);
    system = g_build_filename (EVOLUTION_PRIVDATADIR, "filtertypes.xml", NULL);
    fc = (ERuleContext *) em_filter_context_new ();
    e_rule_context_load (fc, system, user);
    g_free (system);
    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) {
            gchar *filename;

            filename = gconf_client_get_string (gconf, "/apps/evolution/mail/filters/logfile", NULL);
            if (filename) {
                ms->filter_logfile = g_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, E_FILTER_SOURCE_INCOMING) || !strcmp (type, E_FILTER_SOURCE_JUNKTEST))
        && camel_session_get_check_junk (session)) {
        /* implicit junk check as 1st rule */
        camel_filter_driver_add_rule (driver, "Junk check", "(junk-test)", "(begin (set-system-flag \"junk\"))");
    }

    if (strcmp (type, E_FILTER_SOURCE_JUNKTEST) != 0) {
        GString *fsearch, *faction;

        fsearch = g_string_new ("");
        faction = g_string_new ("");

        if (!strcmp (type, E_FILTER_SOURCE_DEMAND))
            type = E_FILTER_SOURCE_INCOMING;

        /* add the user-defined rules next */
        while ((rule = e_rule_context_next_rule (fc, rule, type))) {
            g_string_truncate (fsearch, 0);
            g_string_truncate (faction, 0);

            /* skip disabled rules */
            if (!rule->enabled)
                continue;

            e_filter_rule_build_code (rule, fsearch);
            em_filter_rule_build_action ((EMFilterRule *) 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 gchar *type, GError **error)
{
    return (CamelFilterDriver *) mail_call_main (
        MAIL_CALL_p_ppp, (MailMainFunc) main_get_filter_driver,
        session, type, error);
}

/* 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 MailMsgInfo ms_thread_info_dummy = { sizeof (MailMsg) };

static gpointer ms_thread_msg_new(CamelSession *session, CamelSessionThreadOps *ops, guint size)
{
    CamelSessionThreadMsg *msg;
    CamelSessionClass *session_class;

    session_class = CAMEL_SESSION_CLASS (mail_session_parent_class);
    msg = session_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) {
        MailMsg *m = mail_msg_new(&ms_thread_info_dummy);

        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)
{
    CamelSessionClass *session_class;

    session_class = CAMEL_SESSION_CLASS (mail_session_parent_class);

    mail_msg_unref(m->data);
    session_class->thread_msg_free(session, m);
}

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

static gboolean
forward_to_flush_outbox_cb (gpointer data)
{
    guint *preparing_flush = data;

    g_return_val_if_fail (preparing_flush != NULL, FALSE);

    *preparing_flush = 0;
    mail_send ();

    return FALSE;
}

static void
ms_forward_to_cb (CamelFolder *folder,
                  CamelMimeMessage *msg,
                  CamelMessageInfo *info,
                  gint queued,
                  const gchar *appended_uid,
                  gpointer data)
{
    static guint preparing_flush = 0;

    camel_message_info_free (info);

    /* do not call mail send immediately, just pile them all in the outbox */
    if (preparing_flush ||
        gconf_client_get_bool (mail_config_get_gconf_client (), "/apps/evolution/mail/filters/flush-outbox", NULL)) {
        if (preparing_flush)
            g_source_remove (preparing_flush);

        preparing_flush = g_timeout_add_seconds (60, forward_to_flush_outbox_cb, &preparing_flush);
    }
}

static gboolean
ms_forward_to (CamelSession *session,
               CamelFolder *folder,
               CamelMimeMessage *message,
               const gchar *address,
               GError **error)
{
    EAccount *account;
    CamelMimeMessage *forward;
    CamelStream *mem;
    CamelInternetAddress *addr;
    CamelFolder *out_folder;
    CamelMessageInfo *info;
    struct _camel_header_raw *xev;
    gchar *subject;

    g_return_val_if_fail (folder != NULL, FALSE);
    g_return_val_if_fail (message != NULL, FALSE);
    g_return_val_if_fail (address != NULL, FALSE);

    if (!*address) {
        g_set_error (
            error, CAMEL_ERROR, CAMEL_ERROR_GENERIC,
            _("No destination address provided, forward "
              "of the message has been cancelled."));
        return FALSE;
    }

    account = em_utils_guess_account_with_recipients (message, folder);
    if (!account) {
        g_set_error (
            error, CAMEL_ERROR, CAMEL_ERROR_GENERIC,
            _("No account found to use, forward of the "
              "message has been cancelled."));
        return FALSE;
    }

    forward = camel_mime_message_new ();

    /* make copy of the message, because we are going to modify it */
    mem = camel_stream_mem_new ();
    camel_data_wrapper_write_to_stream ((CamelDataWrapper *)message, mem, NULL);
    camel_seekable_stream_seek (CAMEL_SEEKABLE_STREAM (mem), 0, CAMEL_STREAM_SET, NULL);
    camel_data_wrapper_construct_from_stream ((CamelDataWrapper *)forward, mem, NULL);
    g_object_unref (mem);

    /* clear previous recipients */
    camel_mime_message_set_recipients (forward, CAMEL_RECIPIENT_TYPE_TO, NULL);
    camel_mime_message_set_recipients (forward, CAMEL_RECIPIENT_TYPE_CC, NULL);
    camel_mime_message_set_recipients (forward, CAMEL_RECIPIENT_TYPE_BCC, NULL);
    camel_mime_message_set_recipients (forward, CAMEL_RECIPIENT_TYPE_RESENT_TO, NULL);
    camel_mime_message_set_recipients (forward, CAMEL_RECIPIENT_TYPE_RESENT_CC, NULL);
    camel_mime_message_set_recipients (forward, CAMEL_RECIPIENT_TYPE_RESENT_BCC, NULL);

    /* remove all delivery and notification headers */
    while (camel_medium_get_header (CAMEL_MEDIUM (forward), "Disposition-Notification-To"))
        camel_medium_remove_header (CAMEL_MEDIUM (forward), "Disposition-Notification-To");

    while (camel_medium_get_header (CAMEL_MEDIUM (forward), "Delivered-To"))
        camel_medium_remove_header (CAMEL_MEDIUM (forward), "Delivered-To");

    /* remove any X-Evolution-* headers that may have been set */
    xev = mail_tool_remove_xevolution_headers (forward);
    camel_header_raw_clear (&xev);

    /* from */
    addr = camel_internet_address_new ();
    camel_internet_address_add (addr, account->id->name, account->id->address);
    camel_mime_message_set_from (forward, addr);
    g_object_unref (addr);

    /* to */
    addr = camel_internet_address_new ();
    camel_address_decode (CAMEL_ADDRESS (addr), address);
    camel_mime_message_set_recipients (forward, CAMEL_RECIPIENT_TYPE_TO, addr);
    g_object_unref (addr);

    /* subject */
    subject = mail_tool_generate_forward_subject (message);
    camel_mime_message_set_subject (forward, subject);
    g_free (subject);

    /* and send it */
    info = camel_message_info_new (NULL);
    out_folder = e_mail_local_get_folder (E_MAIL_FOLDER_OUTBOX);
    camel_message_info_set_flags (info, CAMEL_MESSAGE_SEEN, CAMEL_MESSAGE_SEEN);
    mail_append_mail (out_folder, forward, info, ms_forward_to_cb, NULL);

    return TRUE;
}

gchar *
mail_session_get_password (const gchar *url_string)
{
    CamelURL *url;
    gchar *simple_url;
    gchar *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 gchar *url_string,
               const gchar *passwd)
{
    CamelURL *url;
    gchar *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 gchar *url_string)
{
    CamelURL *url;
    gchar *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 gchar *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)));
    }
}

#define DIR_PROXY "/system/proxy"
#define MODE_PROXY "/system/proxy/mode"
#define KEY_SOCKS_HOST "/system/proxy/socks_host"
#define KEY_SOCKS_PORT "/system/proxy/socks_port"

static void
set_socks_proxy_from_gconf (void)
{
    GConfClient *client;
    gchar *mode, *host;
    gint port;

    client = mail_config_get_gconf_client ();

    mode = gconf_client_get_string (client, MODE_PROXY, NULL);
    if (!g_strcmp0(mode, "manual")) {
        host = gconf_client_get_string (client, KEY_SOCKS_HOST, NULL); /* NULL-GError */
        port = gconf_client_get_int (client, KEY_SOCKS_PORT, NULL); /* NULL-GError */
        camel_session_set_socks_proxy (session, host, port);
        g_free (host);
    }
    g_free (mode);
}

static void
proxy_gconf_notify_cb (GConfClient* client, guint cnxn_id, GConfEntry *entry, gpointer user_data)
{
    const gchar *key;

    key = gconf_entry_get_key (entry);

    if (strcmp (entry->key, KEY_SOCKS_HOST) == 0
        || strcmp (entry->key, KEY_SOCKS_PORT) == 0)
        set_socks_proxy_from_gconf ();
}

static void
set_socks_proxy_gconf_watch (void)
{
    GConfClient *client;

    client = mail_config_get_gconf_client ();

    gconf_client_add_dir (client, DIR_PROXY, GCONF_CLIENT_PRELOAD_ONELEVEL, NULL); /* NULL-GError */
    session_gconf_proxy_id = gconf_client_notify_add (client, DIR_PROXY, proxy_gconf_notify_cb, NULL, NULL, NULL); /* NULL-GError */
}

static void
init_socks_proxy (void)
{
    set_socks_proxy_gconf_watch ();
    set_socks_proxy_from_gconf ();
}

void
mail_session_start (void)
{
    GConfClient *gconf;

    if (camel_init (e_get_user_data_dir (), TRUE) != 0)
        exit (0);

    camel_provider_init();

    session = g_object_new (MAIL_TYPE_SESSION, NULL);
    e_account_writable(NULL, E_ACCOUNT_SOURCE_SAVE_PASSWD); /* Init the EAccount Setup */

    camel_session_construct (session, mail_session_get_data_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 = NULL;

    mail_config_reload_junk_headers ();

    init_socks_proxy ();
}

void
mail_session_shutdown (void)
{
    camel_shutdown ();
}

void
mail_session_flush_filter_log (void)
{
    MailSession *ms = (MailSession *) session;

    if (ms->filter_logfile)
        fflush (ms->filter_logfile);
}

void
mail_session_add_junk_plugin (const gchar *plugin_name, CamelJunkPlugin *junk_plugin)
{
    MailSession *ms = (MailSession *) session;
    GConfClient *gconf;
    gchar *def_plugin;

    gconf = mail_config_get_gconf_client ();
    def_plugin = gconf_client_get_string (gconf, "/apps/evolution/mail/junk/default_plugin", NULL);

    ms->junk_plugins = g_list_append(ms->junk_plugins, junk_plugin);
    if (def_plugin && plugin_name) {
        if (!strcmp(def_plugin, plugin_name)) {
            d(printf ("Loading %s as the default junk plugin\n", def_plugin));
            session->junk_plugin = junk_plugin;
            camel_junk_plugin_init (junk_plugin);
        }
    }

    g_free (def_plugin);
}

const GList *
mail_session_get_junk_plugins (void)
{
    MailSession *ms = (MailSession *) session;
    return ms->junk_plugins;
}

void
mail_session_set_junk_headers (const gchar **name, const gchar **value, gint len)
{
    if (!session)
        return;

    camel_session_set_junk_headers (session, name, value, len);
}

const gchar *
mail_session_get_data_dir (void)
{
    if (G_UNLIKELY (mail_data_dir == NULL))
        mail_data_dir = g_build_filename (
            e_get_user_data_dir (), "mail", NULL);

    return mail_data_dir;
}

const gchar *
mail_session_get_config_dir (void)
{
    if (G_UNLIKELY (mail_config_dir == NULL))
        mail_config_dir = g_build_filename (
            e_get_user_config_dir (), "mail", NULL);

    return mail_config_dir;
}