path: root/mail/mail-config.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *           Radek Doulik     <rodo@ximian.com>
 *
 *  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 <pwd.h>
#include <ctype.h>
#include <sys/wait.h>
#include <signal.h>
#include <errno.h>
#include <string.h>

#include <glib.h>
#include <gtk/gtkdialog.h>
#include <gtkhtml/gtkhtml.h>
#include <glade/glade.h>

#include <gconf/gconf.h>
#include <gconf/gconf-client.h>

#include <libxml/tree.h>
#include <libxml/parser.h>

#include <bonobo/bonobo-object.h>
#include <bonobo/bonobo-generic-factory.h>
#include <bonobo/bonobo-context.h>
#include <bonobo/bonobo-moniker-util.h>
#include <bonobo/bonobo-exception.h>

#include <shell/evolution-shell-client.h>

#include <gal/util/e-util.h>
#include <gal/widgets/e-gui-utils.h>
#include <e-util/e-url.h>
#include <e-util/e-passwords.h>
#include "mail.h"
#include "mail-config.h"
#include "mail-mt.h"
#include "mail-tools.h"

#include "Mailer.h"


MailConfigLabel label_defaults[5] = {
    { N_("Important"), 0x00ff0000, NULL },  /* red */
    { N_("Work"),      0x00ff8c00, NULL },  /* orange */
    { N_("Personal"),  0x00008b00, NULL },  /* forest green */
    { N_("To Do"),     0x000000ff, NULL },  /* blue */
    { N_("Later"),     0x008b008b, NULL }   /* magenta */
};

typedef struct {
    GConfClient *gconf;
    
    gboolean corrupt;
    
    GSList *accounts;
    int default_account;
    
    GHashTable *threaded_hash;
    GHashTable *preview_hash;
    
    GList *signature_list;
    int signatures;
    
    MailConfigLabel labels[5];
    
    gboolean signature_info;
    
    /* readonly fields from calendar */
    int time_24hour;
} MailConfig;

static MailConfig *config = NULL;
static guint config_write_timeout = 0;

#define MAIL_CONFIG_IID "OAFIID:GNOME_Evolution_MailConfig_Factory"

/* Prototypes */
static void config_read (void);
static void mail_config_set_default_account_num (int new_default);

/* signatures */
MailConfigSignature *
signature_copy (const MailConfigSignature *sig)
{
    MailConfigSignature *ns;
    
    g_return_val_if_fail (sig != NULL, NULL);
    
    ns = g_new (MailConfigSignature, 1);
    
    ns->id = sig->id;
    ns->name = g_strdup (sig->name);
    ns->filename = g_strdup (sig->filename);
    ns->script = g_strdup (sig->script);
    ns->html = sig->html;
    
    return ns;
}

void
signature_destroy (MailConfigSignature *sig)
{
    g_free (sig->name);
    g_free (sig->filename);
    g_free (sig->script);
    g_free (sig);
}

/* Identity */
MailConfigIdentity *
identity_copy (const MailConfigIdentity *id)
{
    MailConfigIdentity *new;
    
    g_return_val_if_fail (id != NULL, NULL);
    
    new = g_new0 (MailConfigIdentity, 1);
    new->name = g_strdup (id->name);
    new->address = g_strdup (id->address);
    new->reply_to = g_strdup (id->reply_to);
    new->organization = g_strdup (id->organization);
    new->def_signature = id->def_signature;
    new->auto_signature = id->auto_signature;
    
    return new;
}

void
identity_destroy (MailConfigIdentity *id)
{
    if (!id)
        return;
    
    g_free (id->name);
    g_free (id->address);
    g_free (id->reply_to);
    g_free (id->organization);
    
    g_free (id);
}

/* Service */
MailConfigService *
service_copy (const MailConfigService *source) 
{
    MailConfigService *new;
    
    g_return_val_if_fail (source != NULL, NULL);
    
    new = g_new0 (MailConfigService, 1);
    new->url = g_strdup (source->url);
    new->keep_on_server = source->keep_on_server;
    new->auto_check = source->auto_check;
    new->auto_check_time = source->auto_check_time;
    new->save_passwd = source->save_passwd;
    
    return new;
}

void
service_destroy (MailConfigService *source)
{
    if (!source)
        return;
    
    g_free (source->url);
    
    g_free (source);
}

void
service_destroy_each (gpointer item, gpointer data)
{
    service_destroy ((MailConfigService *) item);
}

/* Account */
MailConfigAccount *
account_copy (const MailConfigAccount *account) 
{
    MailConfigAccount *new;
    
    g_return_val_if_fail (account != NULL, NULL);
    
    new = g_new0 (MailConfigAccount, 1);
    new->name = g_strdup (account->name);
    
    new->enabled = account->enabled;
    
    new->id = identity_copy (account->id);
    new->source = service_copy (account->source);
    new->transport = service_copy (account->transport);
    
    new->drafts_folder_uri = g_strdup (account->drafts_folder_uri);
    new->sent_folder_uri = g_strdup (account->sent_folder_uri);
    
    new->always_cc = account->always_cc;
    new->cc_addrs = g_strdup (account->cc_addrs);
    new->always_bcc = account->always_bcc;
    new->bcc_addrs = g_strdup (account->bcc_addrs);
    
    new->pgp_key = g_strdup (account->pgp_key);
    new->pgp_encrypt_to_self = account->pgp_encrypt_to_self;
    new->pgp_always_sign = account->pgp_always_sign;
    new->pgp_no_imip_sign = account->pgp_no_imip_sign;
    new->pgp_always_trust = account->pgp_always_trust;
    
    new->smime_key = g_strdup (account->smime_key);
    new->smime_encrypt_to_self = account->smime_encrypt_to_self;
    new->smime_always_sign = account->smime_always_sign;
    
    return new;
}

void
account_destroy (MailConfigAccount *account)
{
    if (!account)
        return;
    
    g_free (account->name);
    
    identity_destroy (account->id);
    service_destroy (account->source);
    service_destroy (account->transport);
    
    g_free (account->drafts_folder_uri);
    g_free (account->sent_folder_uri);
    
    g_free (account->cc_addrs);
    g_free (account->bcc_addrs);
    
    g_free (account->pgp_key);
    g_free (account->smime_key);
    
    g_free (account);
}

void
account_destroy_each (gpointer item, gpointer data)
{
    account_destroy ((MailConfigAccount *) item);
}


static gboolean
xml_get_bool (xmlNodePtr node, const char *name)
{
    gboolean bool = FALSE;
    char *buf;
    
    if ((buf = xmlGetProp (node, name))) {
        bool = (!strcmp (buf, "true") || !strcmp (buf, "yes"));
        xmlFree (buf);
    }
    
    return bool;
}

static int
xml_get_int (xmlNodePtr node, const char *name)
{
    int number = 0;
    char *buf;
    
    if ((buf = xmlGetProp (node, name))) {
        number = strtol (buf, NULL, 10);
        xmlFree (buf);
    }
    
    return number;
}

static char *
xml_get_prop (xmlNodePtr node, const char *name)
{
    char *buf, *val;
    
    buf = xmlGetProp (node, name);
    val = g_strdup (buf);
    g_free (buf);
    
    return val;
}

static char *
xml_get_content (xmlNodePtr node)
{
    char *buf, *val;
    
    buf = xmlNodeGetContent (node);
        val = g_strdup (buf);
    xmlFree (buf);
    
    return val;
}

static MailConfigSignature *
lookup_signature (int i)
{
    MailConfigSignature *sig;
    GList *l;
    
    if (i == -1)
        return NULL;
    
    for (l = config->signature_list; l; l = l->next) {
        sig = (MailConfigSignature *) l->data;
        if (sig->id == i)
            return sig;
    }
    
    return NULL;
}

static MailConfigAccount *
account_new_from_xml (char *in)
{
    MailConfigAccount *account;
    xmlNodePtr node, cur;
    xmlDocPtr doc;
    char *buf;
    
    if (!(doc = xmlParseDoc (in)))
        return NULL;
    
    node = doc->children;
    if (strcmp (node->name, "account") != 0) {
        xmlFreeDoc (doc);
        return NULL;
    }
    
    account = g_new0 (MailConfigAccount, 1);
    account->name = xml_get_prop (node, "name");
    account->enabled = xml_get_bool (node, "enabled");
    
    node = node->children;
    while (node != NULL) {
        if (!strcmp (node->name, "identity")) {
            account->id = g_new0 (MailConfigIdentity, 1);
            
            cur = node->children;
            while (cur != NULL) {
                if (!strcmp (cur->name, "name")) {
                    account->id->name = xml_get_content (cur);
                } else if (!strcmp (cur->name, "addr-spec")) {
                    account->id->address = xml_get_content (cur);
                } else if (!strcmp (cur->name, "reply-to")) {
                    account->id->reply_to = xml_get_content (cur);
                } else if (!strcmp (cur->name, "organization")) {
                    account->id->organization = xml_get_content (cur);
                } else if (!strcmp (cur->name, "signature")) {
                    account->id->auto_signature = xml_get_bool (cur, "auto");
                    account->id->def_signature = lookup_signature (xml_get_int (cur, "default"));
                }
                
                cur = cur->next;
            }
        } else if (!strcmp (node->name, "source")) {
            account->source = g_new0 (MailConfigService, 1);
            account->source->save_passwd = xml_get_bool (node, "save-passwd");
            account->source->keep_on_server = xml_get_bool (node, "keep-on-server");
            account->source->auto_check = xml_get_bool (node, "auto-check");
            
            /* FIXME: account->source->auto_check_time */
            
            cur = node->children;
            while (cur != NULL) {
                if (!strcmp (cur->name, "url")) {
                    account->source->url = xml_get_content (cur);
                    break;
                }
                cur = cur->next;
            }
        } else if (!strcmp (node->name, "transport")) {
            account->transport = g_new0 (MailConfigService, 1);
            account->transport->save_passwd = xml_get_bool (node, "save-passwd");
            
            cur = node->children;
            while (cur != NULL) {
                if (!strcmp (cur->name, "url")) {
                    account->transport->url = xml_get_content (cur);
                    break;
                }
                cur = cur->next;
            }
        } else if (!strcmp (node->name, "drafts-folder")) {
            account->drafts_folder_uri = xml_get_content (node);
        } else if (!strcmp (node->name, "sent-folder")) {
            account->sent_folder_uri = xml_get_content (node);
        } else if (!strcmp (node->name, "auto-cc")) {
            account->always_cc = xml_get_bool (node, "always");
            account->cc_addrs = xml_get_content (node);
        } else if (!strcmp (node->name, "auto-bcc")) {
            account->always_cc = xml_get_bool (node, "always");
            account->bcc_addrs = xml_get_content (node);
        } else if (!strcmp (node->name, "pgp")) {
            account->pgp_encrypt_to_self = xml_get_bool (node, "encrypt-to-self");
            account->pgp_always_trust = xml_get_bool (node, "always-trust");
            account->pgp_always_sign = xml_get_bool (node, "always-sign");
            account->pgp_no_imip_sign = !xml_get_bool (node, "sign-imip");
            
            if (node->children) {
                cur = node->children;
                while (cur != NULL) {
                    if (!strcmp (cur->name, "key-id")) {
                        account->pgp_key = xml_get_content (cur);
                        break;
                    }
                    
                    cur = cur->next;
                }
            }
        } else if (!strcmp (node->name, "smime")) {
            account->smime_encrypt_to_self = xml_get_bool (node, "encrypt-to-self");
            account->smime_always_sign = xml_get_bool (node, "always-sign");
            
            if (node->children) {
                cur = node->children;
                while (cur != NULL) {
                    if (!strcmp (cur->name, "key-id")) {
                        account->smime_key = xml_get_content (cur);
                        break;
                    }
                    
                    cur = cur->next;
                }
            }
        }
        
        node = node->next;
    }
    
    xmlFreeDoc (doc);
    
    return account;
}

static char *
account_to_xml (MailConfigAccount *account)
{
    xmlNodePtr root, node, id, src, xport;
    char *xmlbuf, *tmp, buf[20];
    xmlDocPtr doc;
    int n;
    
    doc = xmlNewDoc ("1.0");
    
    root = xmlNewDocNode (doc, NULL, "account", NULL);
    xmlDocSetRootElement (doc, root);
    
    xmlSetProp (root, "name", account->name);
    xmlSetProp (root, "enabled", account->enabled ? "true" : "false");
    
    id = xmlNewChild (root, NULL, "identity", NULL);
    if (account->id->name)
        xmlNewTextChild (id, NULL, "name", account->id->name);
    if (account->id->address)
        xmlNewTextChild (id, NULL, "addr-spec", account->id->address);
    if (account->id->reply_to)
        xmlNewTextChild (id, NULL, "reply-to", account->id->reply_to);
    if (account->id->organization)
        xmlNewTextChild (id, NULL, "organization", account->id->organization);
    
    node = xmlNewChild (id, NULL, "signature", NULL);
    xmlSetProp (node, "auto", account->id->auto_signature ? "true" : "false");
    sprintf (buf, "%d", account->id->def_signature);
    xmlSetProp (node, "default", buf);
    
    src = xmlNewChild (root, NULL, "source", NULL);
    xmlSetProp (src, "save-passwd", account->source->save_passwd ? "true" : "false");
    xmlSetProp (src, "keep-on-server", account->source->keep_on_server ? "true" : "false");
    xmlSetProp (src, "auto-check", account->source->auto_check ? "true" : "false");
    if (account->source->url)
        xmlNewTextChild (src, NULL, "url", account->source->url);
    
    /* FIXME: save auto-check timeout value */
    
    xport = xmlNewChild (root, NULL, "transport", NULL);
    xmlSetProp (xport, "save-passwd", account->transport->save_passwd ? "true" : "false");
    if (account->transport->url)
        xmlNewTextChild (xport, NULL, "url", account->transport->url);
    
    xmlNewTextChild (root, NULL, "drafts-folder", account->drafts_folder_uri);
    xmlNewTextChild (root, NULL, "sent-folder", account->sent_folder_uri);
    
    node = xmlNewChild (root, NULL, "auto-cc", NULL);
    xmlSetProp (node, "always", account->always_cc ? "true" : "false");
    if (account->cc_addrs)
        xmlNewTextChild (node, NULL, "recipients", account->cc_addrs);
    
    node = xmlNewChild (root, NULL, "auto-bcc", NULL);
    xmlSetProp (node, "always", account->always_bcc ? "true" : "false");
    if (account->bcc_addrs)
        xmlNewTextChild (node, NULL, "recipients", account->bcc_addrs);
    
    node = xmlNewChild (root, NULL, "pgp", NULL);
    xmlSetProp (node, "encrypt-to-self", account->pgp_encrypt_to_self ? "true" : "false");
    xmlSetProp (node, "always-trust", account->pgp_always_trust ? "true" : "false");
    xmlSetProp (node, "always-sign", account->pgp_always_sign ? "true" : "false");
    xmlSetProp (node, "sign-imip", !account->pgp_no_imip_sign ? "true" : "false");
    if (account->pgp_key)
        xmlNewTextChild (node, NULL, "key-id", account->pgp_key);
    
    node = xmlNewChild (root, NULL, "smime", NULL);
    xmlSetProp (node, "encrypt-to-self", account->smime_encrypt_to_self ? "true" : "false");
    xmlSetProp (node, "always-sign", account->smime_always_sign ? "true" : "false");
    if (account->smime_key)
        xmlNewTextChild (node, NULL, "key-id", account->smime_key);
    
    xmlDocDumpMemory (doc, &xmlbuf, &n);
    xmlFreeDoc (doc);
    
    if (!(tmp = realloc (xmlbuf, n + 1))) {
        g_free (xmlbuf);
        return NULL;
    }
    
    xmlbuf[n] = '\0';
    
    return xmlbuf;
}

static void
accounts_changed (GConfClient *client, guint cnxn_id, GConfEntry *entry, gpointer user_data)
{
    GSList *list, *l, *tail, *n;
    
    if (config->accounts != NULL) {
        l = config->accounts;
        while (l != NULL) {
            n = l->next;
            account_destroy ((MailConfigAccount *) l->data);
            g_slist_free_1 (l);
            l = n;
        }
        
        config->accounts = NULL;
    }
    
    tail = (GSList *) &config->accounts;
    
    list = gconf_client_get_list (config->gconf, "/apps/evolution/mail/accounts",
                      GCONF_VALUE_STRING, NULL);
    
    l = list;
    while (l != NULL) {
        MailConfigAccount *account;
        
        if ((account = account_new_from_xml ((char *) l->data))) {
            n = g_slist_alloc ();
            n->data = account;
            n->next = NULL;
            
            tail->next = n;
            tail = n;
        }
        
        n = l->next;
        g_slist_free_1 (l);
        l = n;
    }
}

/* Config struct routines */
void
mail_config_init (void)
{
    if (config)
        return;
    
    config = g_new0 (MailConfig, 1);
    config->gconf = gconf_client_get_default ();
    
    gconf_client_add_dir (config->gconf, "/apps/evolution/mail/accounts",
                  GCONF_CLIENT_PRELOAD_ONELEVEL, NULL);
    
    gconf_client_notify_add (config->gconf, "/apps/evolution/mail/accounts",
                 accounts_changed, NULL, NULL, NULL);
    
    config_read ();
}

void
mail_config_clear (void)
{
    GSList *list, *l, *n;
    int i;
    
    if (!config)
        return;
    
    l = config->accounts;
    while (l != NULL) {
        n = l->next;
        account_destroy ((MailConfigAccount *) l->data);
        g_slist_free_1 (l);
        l = n;
    }
    
    config->accounts = NULL;
    
    for (i = 0; i < 5; i++) {
        g_free (config->labels[i].name);
        config->labels[i].name = NULL;
        g_free (config->labels[i].string);
        config->labels[i].string = NULL;
    }
}

static MailConfigSignature *
config_read_signature (int i)
{
    MailConfigSignature *sig;
    char *path, *val;
    
    sig = g_new0 (MailConfigSignature, 1);
    
    sig->id = i;

#warning "need to rewrite the config_read_signature()"
#if 0
    path = g_strdup_printf ("/apps/Evolution/Mail/Signatures/name_%d", i);
    val = e_config_listener_get_string (config->db, path);
    g_free (path);
    if (val && *val)
        sig->name = val;
    else
        g_free (val);
    
    path = g_strdup_printf ("/apps/Evolution/Mail/Signatures/filename_%d", i);
    val = e_config_listener_get_string (config->db, path);
    g_free (path);
    if (val && *val)
        sig->filename = val;
    else
        g_free (val);
    
    path = g_strdup_printf ("/apps/Evolution/Mail/Signatures/script_%d", i);
    val = e_config_listener_get_string (config->db, path);
    g_free (path);
    if (val && *val)
        sig->script = val;
    else
        g_free (val);
    
    path = g_strdup_printf ("/apps/Evolution/Mail/Signatures/html_%d", i);
    sig->html = e_config_listener_get_boolean_with_default (config->db, path, FALSE, NULL);
    g_free (path);
#endif
    
    return sig;
}

static void
config_read_signatures ()
{
    MailConfigSignature *sig;
    int i;
    
    config->signature_list = NULL;
    config->signatures = 0;
    
#warning "need to rewrite config_read_signatures()"
#if 0
    config->signatures = e_config_listener_get_long_with_default (config->db, "/apps/Evolution/Mail/Signatures/num", 0, NULL);
    
    for (i = 0; i < config->signatures; i ++) {
        sig = config_read_signature (i);
        config->signature_list = g_list_append (config->signature_list, sig);
    }
#endif
}

static void
config_write_signature (MailConfigSignature *sig, gint i)
{
#warning "need to rewrite config_write_signature()"
#if 0
    char *path;
    
    printf ("config_write_signature i: %d id: %d\n", i, sig->id);
    
    path = g_strdup_printf ("/apps/Evolution/Mail/Signatures/name_%d", i);
    e_config_listener_set_string (config->db, path, sig->name ? sig->name : "");
    g_free (path);
    
    path = g_strdup_printf ("/apps/Evolution/Mail/Signatures/filename_%d", i);
    e_config_listener_set_string (config->db, path, sig->filename ? sig->filename : "");
    g_free (path);
    
    path = g_strdup_printf ("/apps/Evolution/Mail/Signatures/script_%d", i);
    e_config_listener_set_string (config->db, path, sig->script ? sig->script : "");
    g_free (path);
    
    path = g_strdup_printf ("/apps/Evolution/Mail/Signatures/html_%d", i);
    e_config_listener_set_boolean (config->db, path, sig->html);
    g_free (path);
#endif
}

static void
config_write_signatures_num ()
{
#warning "need to rewrite config_write_signatures_num()"
    /*e_config_listener_set_long (config->db, "/apps/Evolution/Mail/Signatures/num", config->signatures);*/
}

static void
config_write_signatures ()
{
    GList *l;
    int id;
    
    for (id = 0, l = config->signature_list; l; l = l->next, id ++) {
        config_write_signature ((MailConfigSignature *) l->data, id);
    }
    
    config_write_signatures_num ();
}

void
mail_config_write_account_sig (MailConfigAccount *account, int id)
{
    /* FIXME: what is this supposed to do? */
    ;
}

static void
config_read (void)
{
    int len, i, default_num;
    char *path, *val, *p;
    
    mail_config_clear ();
    
    config_read_signatures ();
    
    accounts_changed (config->gconf, 0, NULL, NULL);
    
    default_num = gconf_client_get_int (config->gconf, "/apps/evolution/mail/default_account", NULL);
    mail_config_set_default_account_num (default_num);
}

void
mail_config_write (void)
{
    GSList *list, *l, *tail, *n;
    int default_num, i;
    char *xmlbuf;
    
    if (!config)
        return;
    
    config_write_signatures ();
    
    /* Accounts */
    default_num = mail_config_get_default_account_num ();
    gconf_client_set_int (config->gconf, "/apps/evolution/mail/default_account", default_num, NULL);
    
    list = NULL;
    tail = (GSList *) &list;
    
    l = config->accounts;
    while (l != NULL) {
        if ((xmlbuf = account_to_xml ((MailConfigAccount *) l->data))) {
            n = g_slist_alloc ();
            n->data = xmlbuf;
            n->next = NULL;
            
            tail->next = n;
            tail = n;
        }
        
        l = l->next;
    }
    
    gconf_client_set_list (config->gconf, "/apps/evolution/mail/accounts", GCONF_VALUE_STRING, list, NULL);
    
    l = list;
    while (l != NULL) {
        n = l->next;
        g_free (l->data);
        g_slist_free_1 (l);
        l = n;
    }
    
    gconf_client_suggest_sync (config->gconf, NULL);
}

static gboolean
hash_save_state (gpointer key, gpointer value, gpointer user_data)
{
    char *path;
    gboolean bool = GPOINTER_TO_INT (value);
    
#warning "need to rewrite hash_save_state(), probably shouldn't use gconf tho"
#if 0
    path = g_strconcat ("/apps/Evolution/Mail/", (char *)user_data, "/", (char *)key, 
                NULL);
    e_config_listener_set_boolean (config->db, path, bool);
    g_free (path);
    g_free (key);
#endif
    
    return TRUE;
}

void
mail_config_write_on_exit (void)
{
    MailConfigAccount *account;
    const GSList *accounts;
    char *path, *p;
    int i;
    
    if (config_write_timeout) {
        g_source_remove (config_write_timeout);
        config_write_timeout = 0;
        mail_config_write ();
    }
    
    /* Message Threading */
    if (config->threaded_hash)
        g_hash_table_foreach_remove (config->threaded_hash, hash_save_state, "Threads");
    
    /* Message Preview */
    if (config->preview_hash)
        g_hash_table_foreach_remove (config->preview_hash, hash_save_state, "Preview");
    
    /* Passwords */
    
    /* then we make sure the ones we want to remember are in the
           session cache */
    accounts = config->accounts;
    for ( ; accounts; accounts = accounts->next) {
        char *passwd;
        account = accounts->data;
        if (account->source->save_passwd && account->source->url) {
            passwd = mail_session_get_password (account->source->url);
            mail_session_forget_password (account->source->url);
            mail_session_add_password (account->source->url, passwd);
            g_free (passwd);
        }
        
        if (account->transport->save_passwd && account->transport->url) {
            passwd = mail_session_get_password (account->transport->url);
            mail_session_forget_password (account->transport->url);
            mail_session_add_password (account->transport->url, passwd);
            g_free (passwd);
        }
    }
    
    /* then we clear out our component passwords */
    e_passwords_clear_component_passwords ("Mail");
    
    /* then we remember them */
    accounts = config->accounts;
    for ( ; accounts; accounts = accounts->next) {
        account = accounts->data;
        if (account->source->save_passwd && account->source->url)
            mail_session_remember_password (account->source->url);
        
        if (account->transport->save_passwd && account->transport->url)
            mail_session_remember_password (account->transport->url);
    }
    
    /* now do cleanup */
    mail_config_clear ();
}

/* Accessor functions */
gboolean
mail_config_is_configured (void)
{
    return config->accounts != NULL;
}

gboolean
mail_config_is_corrupt (void)
{
    return config->corrupt;
}

static char *
uri_to_key (const char *uri)
{
    char *rval, *ptr;
    
    if (!uri)
        return NULL;
    
    rval = g_strdup (uri);
    
    for (ptr = rval; *ptr; ptr++)
        if (*ptr == '/' || *ptr == ':')
            *ptr = '_';
    
    return rval;
}

gboolean
mail_config_get_show_preview (const char *uri)
{
#warning "FIXME: need to rework how we save state, probably shouldn't use gconf"
#if 0
    if (uri && *uri) {
        gpointer key, val;
        char *dbkey;
        
        dbkey = uri_to_key (uri);
        
        if (!config->preview_hash)
            config->preview_hash = g_hash_table_new (g_str_hash, g_str_equal);
        
        if (!g_hash_table_lookup_extended (config->preview_hash, dbkey, &key, &val)) {
            gboolean value;
            char *str;
            
            str = g_strdup_printf ("/apps/Evolution/Mail/Preview/%s", dbkey);
            value = e_config_listener_get_boolean_with_default (config->db, str, TRUE, NULL);
            g_free (str);
            
            g_hash_table_insert (config->preview_hash, dbkey,
                         GINT_TO_POINTER (value));
            
            return value;
        } else {
            g_free (dbkey);
            return GPOINTER_TO_INT (val);
        }
    }
#endif
    
    /* return the default value */
    
    return gconf_client_get_bool (config->gconf, "/apps/evolution/mail/display/show_preview", NULL);
}

void
mail_config_set_show_preview (const char *uri, gboolean value)
{
    if (uri && *uri) {
        char *dbkey = uri_to_key (uri);
        gpointer key, val;
        
        if (!config->preview_hash)
            config->preview_hash = g_hash_table_new (g_str_hash, g_str_equal);
        
        if (g_hash_table_lookup_extended (config->preview_hash, dbkey, &key, &val)) {
            g_hash_table_insert (config->preview_hash, dbkey,
                         GINT_TO_POINTER (value));
            g_free (dbkey);
        } else {
            g_hash_table_insert (config->preview_hash, dbkey, 
                         GINT_TO_POINTER (value));
        }
    }
}

gboolean
mail_config_get_thread_list (const char *uri)
{
#warning "FIXME: need to rework how we save state, probably shouldn't use gconf"
#if 0
    if (uri && *uri) {
        gpointer key, val;
        char *dbkey;
        
        dbkey = uri_to_key (uri);
        
        if (!config->threaded_hash)
            config->threaded_hash = g_hash_table_new (g_str_hash, g_str_equal);
        
        if (!g_hash_table_lookup_extended (config->threaded_hash, dbkey, &key, &val)) {
            gboolean value;
            char *str;
            
            str = g_strdup_printf ("/apps/Evolution/Mail/Threads/%s", dbkey);
            value = e_config_listener_get_boolean_with_default (config->db, str, FALSE, NULL);
            g_free (str);
            
            g_hash_table_insert (config->threaded_hash, dbkey,
                         GINT_TO_POINTER (value));
            
            return value;
        } else {
            g_free(dbkey);
            return GPOINTER_TO_INT (val);
        }
    }
#endif
    
    /* return the default value */
    
    return gconf_client_get_bool (config->gconf, "/apps/evolution/mail/display/thread_list", NULL);
}

void
mail_config_set_thread_list (const char *uri, gboolean value)
{
    if (uri && *uri) {
        char *dbkey = uri_to_key (uri);
        gpointer key, val;
        
        if (!config->threaded_hash)
            config->threaded_hash = g_hash_table_new (g_str_hash, g_str_equal);
        
        if (g_hash_table_lookup_extended (config->threaded_hash, dbkey, &key, &val)) {
            g_hash_table_insert (config->threaded_hash, dbkey,
                         GINT_TO_POINTER (value));
            g_free (dbkey);
        } else {
            g_hash_table_insert (config->threaded_hash, dbkey, 
                         GINT_TO_POINTER (value));
        }
    }
}

const char *
mail_config_get_label_name (int label)
{
    g_return_val_if_fail (label >= 0 && label < 5, NULL);
    
    if (!config->labels[label].name)
        config->labels[label].name = g_strdup (_(label_defaults[label].name));
    
    return config->labels[label].name;
}

void
mail_config_set_label_name (int label, const char *name)
{
    g_return_if_fail (label >= 0 && label < 5);
    
    if (!name)
        name = _(label_defaults[label].name);
    
    g_free (config->labels[label].name);
    config->labels[label].name = g_strdup (name);
}

guint32
mail_config_get_label_color (int label)
{
    g_return_val_if_fail (label >= 0 && label < 5, 0);
    
    return config->labels[label].color;
}

void
mail_config_set_label_color (int label, guint32 color)
{
    g_return_if_fail (label >= 0 && label < 5);
    
    g_free (config->labels[label].string);
    config->labels[label].string = NULL;
    
    config->labels[label].color = color;
}

const char *
mail_config_get_label_color_string (int label)
{
    g_return_val_if_fail (label >= 0 && label < 5, NULL);
    
    if (!config->labels[label].string) {
        guint32 rgb = config->labels[label].color;
        char *colour;
        
        colour = g_strdup_printf ("#%.2x%.2x%.2x",
                      (rgb & 0xff0000) >> 16,
                      (rgb & 0xff00) >> 8,
                      rgb & 0xff);
        
        config->labels[label].string = colour;
    }
    
    return config->labels[label].string;
}

gboolean
mail_config_find_account (const MailConfigAccount *account)
{
    return g_slist_find (config->accounts, (gpointer) account) != NULL;
}

const MailConfigAccount *
mail_config_get_default_account (void)
{
    MailConfigAccount *account;
    
    if (config == NULL) {
        mail_config_init ();
    }
    
    if (!config->accounts)
        return NULL;
    
    account = g_slist_nth_data (config->accounts,
                    config->default_account);
    
    /* Looks like we have no default, so make the first account
           the default */
    if (account == NULL) {
        mail_config_set_default_account_num (0);
        account = config->accounts->data;
    }
    
    return account;
}

const MailConfigAccount *
mail_config_get_account_by_name (const char *account_name)
{
    /* FIXME: this should really use a hash */
    const MailConfigAccount *account;
    GSList *l;
    
    l = config->accounts;
    while (l) {
        account = l->data;
        if (account && !strcmp (account->name, account_name))
            return account;
        
        l = l->next;
    }
    
    return NULL;
}

const MailConfigAccount *
mail_config_get_account_by_source_url (const char *source_url)
{
    const MailConfigAccount *account;
    CamelProvider *provider;
    CamelURL *source;
    GSList *l;
    
    g_return_val_if_fail (source_url != NULL, NULL);
    
    provider = camel_session_get_provider (session, source_url, NULL);
    if (!provider)
        return NULL;
    
    source = camel_url_new (source_url, NULL);
    if (!source)
        return NULL;
    
    l = config->accounts;
    while (l) {
        account = l->data;
        
        if (account && account->source && account->source->url) {
            CamelURL *url;
            
            url = camel_url_new (account->source->url, NULL);
            if (url && provider->url_equal (url, source)) {
                camel_url_free (url);
                camel_url_free (source);
                return account;
            }
            
            if (url)
                camel_url_free (url);
        }
        
        l = l->next;
    }
    
    camel_url_free (source);
    
    return NULL;
}

const MailConfigAccount *
mail_config_get_account_by_transport_url (const char *transport_url)
{
    const MailConfigAccount *account;
    CamelProvider *provider;
    CamelURL *transport;
    GSList *l;
    
    g_return_val_if_fail (transport_url != NULL, NULL);
    
    provider = camel_session_get_provider (session, transport_url, NULL);
    if (!provider)
        return NULL;
    
    transport = camel_url_new (transport_url, NULL);
    if (!transport)
        return NULL;
    
    l = config->accounts;
    while (l) {
        account = l->data;
        
        if (account && account->transport && account->transport->url) {
            CamelURL *url;
            
            url = camel_url_new (account->transport->url, NULL);
            if (url && provider->url_equal (url, transport)) {
                camel_url_free (url);
                camel_url_free (transport);
                return account;
            }
            
            if (url)
                camel_url_free (url);
        }
        
        l = l->next;
    }
    
    camel_url_free (transport);
    
    return NULL;
}

const GSList *
mail_config_get_accounts (void)
{
    g_assert (config != NULL);
    
    return config->accounts;
}

void
mail_config_add_account (MailConfigAccount *account)
{
    config->accounts = g_slist_append (config->accounts, account);
}

const GSList *
mail_config_remove_account (MailConfigAccount *account)
{
    int index;
    
    /* Removing the current default, so make the first account the
           default */
    if (account == mail_config_get_default_account ()) {
        config->default_account = 0;
    } else {
        /* adjust the default to make sure it points to the same one */
        index = g_slist_index (config->accounts, account);
        if (config->default_account > index)
            config->default_account--;
    }
    
    config->accounts = g_slist_remove (config->accounts, account);
    account_destroy (account);
    
    return config->accounts;
}

int
mail_config_get_default_account_num (void)
{
    return config->default_account;
}

static void
mail_config_set_default_account_num (int new_default)
{
    config->default_account = new_default;
}

void
mail_config_set_default_account (const MailConfigAccount *account)
{
    int index;
    
    index = g_slist_index (config->accounts, (void *) account);
    if (index == -1)
        return;
    
    config->default_account = index;
    
    return;
}

const MailConfigIdentity *
mail_config_get_default_identity (void)
{
    const MailConfigAccount *account;
    
    account = mail_config_get_default_account ();
    if (account)
        return account->id;
    else
        return NULL;
}

const MailConfigService *
mail_config_get_default_transport (void)
{
    const MailConfigAccount *account;
    const GSList *accounts;
    
    account = mail_config_get_default_account ();
    if (account && account->transport && account->transport->url)
        return account->transport;
    
    /* return the first account with a transport? */
    accounts = config->accounts;
    while (accounts) {
        account = accounts->data;
        
        if (account->transport && account->transport->url)
            return account->transport;
        
        accounts = accounts->next;
    }
    
    return NULL;
}

static char *
uri_to_evname (const char *uri, const char *prefix)
{
    char *safe;
    char *tmp;

    safe = g_strdup (uri);
    e_filename_make_safe (safe);
    /* blah, easiest thing to do */
    if (prefix[0] == '*')
        tmp = g_strdup_printf ("%s/%s%s.xml", evolution_dir, prefix + 1, safe);
    else
        tmp = g_strdup_printf ("%s/%s%s", evolution_dir, prefix, safe);
    g_free (safe);
    return tmp;
}

void
mail_config_uri_renamed(GCompareFunc uri_cmp, const char *old, const char *new)
{
    MailConfigAccount *ac;
    const GSList *l;
    int work = 0;
    gpointer oldkey, newkey, hashkey;
    gpointer val;
    char *oldname, *newname;
    char *cachenames[] = { "config/hidestate-", 
                   "config/et-expanded-", 
                   "config/et-header-", 
                   "*views/mail/current_view-",
                   "*views/mail/custom_view-",
                   NULL };
    int i;

    l = mail_config_get_accounts();
    while (l) {
        ac = l->data;
        if (ac->sent_folder_uri && uri_cmp(ac->sent_folder_uri, old)) {
            g_free(ac->sent_folder_uri);
            ac->sent_folder_uri = g_strdup(new);
            work = 1;
        }
        if (ac->drafts_folder_uri && uri_cmp(ac->drafts_folder_uri, old)) {
            g_free(ac->drafts_folder_uri);
            ac->drafts_folder_uri = g_strdup(new);
            work = 1;
        }
        l = l->next;
    }

    oldkey = uri_to_key (old);
    newkey = uri_to_key (new);

    /* call this to load the hash table and the key */
    mail_config_get_thread_list (old);
    if (g_hash_table_lookup_extended (config->threaded_hash, oldkey, &hashkey, &val)) {
        /*printf ("changing key in threaded_hash\n");*/
        g_hash_table_remove (config->threaded_hash, hashkey);
        g_hash_table_insert (config->threaded_hash, g_strdup(newkey), val);
        work = 2;
    }

    /* ditto */
    mail_config_get_show_preview (old);
    if (g_hash_table_lookup_extended (config->preview_hash, oldkey, &hashkey, &val)) {
        /*printf ("changing key in preview_hash\n");*/
        g_hash_table_remove (config->preview_hash, hashkey);
        g_hash_table_insert (config->preview_hash, g_strdup(newkey), val);
        work = 2;
    }

    g_free (oldkey);
    g_free (newkey);

    /* ignore return values or if the files exist or
     * not, doesn't matter */

    for (i = 0; cachenames[i]; i++) {
        oldname = uri_to_evname (old, cachenames[i]);
        newname = uri_to_evname (new, cachenames[i]);
        /*printf ("** renaming %s to %s\n", oldname, newname);*/
        rename (oldname, newname);
        g_free (oldname);
        g_free (newname);
    }

    /* nasty ... */
    if (work)
        mail_config_write();
}

void
mail_config_uri_deleted(GCompareFunc uri_cmp, const char *uri)
{
    MailConfigAccount *ac;
    const GSList *l;
    int work = 0;
    /* assumes these can't be removed ... */
    extern char *default_sent_folder_uri, *default_drafts_folder_uri;

    l = mail_config_get_accounts();
    while (l) {
        ac = l->data;
        if (ac->sent_folder_uri && uri_cmp(ac->sent_folder_uri, uri)) {
            g_free(ac->sent_folder_uri);
            ac->sent_folder_uri = g_strdup(default_sent_folder_uri);
            work = 1;
        }
        if (ac->drafts_folder_uri && uri_cmp(ac->drafts_folder_uri, uri)) {
            g_free(ac->drafts_folder_uri);
            ac->drafts_folder_uri = g_strdup(default_drafts_folder_uri);
            work = 1;
        }
        l = l->next;
    }

    /* nasty again */
    if (work)
        mail_config_write();
}

void 
mail_config_service_set_save_passwd (MailConfigService *service, gboolean save_passwd)
{
    service->save_passwd = save_passwd;
}

char *
mail_config_folder_to_safe_url (CamelFolder *folder)
{
    char *url;
    
    url = mail_tools_folder_to_url (folder);
    e_filename_make_safe (url);
    
    return url;
}

char *
mail_config_folder_to_cachename (CamelFolder *folder, const char *prefix)
{
    char *url, *filename;
    
    url = mail_config_folder_to_safe_url (folder);
    filename = g_strdup_printf ("%s/config/%s%s", evolution_dir, prefix, url);
    g_free (url);
    
    return filename;
}


/* Async service-checking/authtype-lookup code. */
struct _check_msg {
    struct _mail_msg msg;

    const char *url;
    CamelProviderType type;
    GList **authtypes;
    gboolean *success;
};

static char *
check_service_describe (struct _mail_msg *mm, int complete)
{
    return g_strdup (_("Checking Service"));
}

static void
check_service_check (struct _mail_msg *mm)
{
    struct _check_msg *m = (struct _check_msg *)mm;
    CamelService *service = NULL;

    camel_operation_register(mm->cancel);

    service = camel_session_get_service (session, m->url, m->type, &mm->ex);
    if (!service) {
        camel_operation_unregister(mm->cancel);
        return;
    }

    if (m->authtypes)
        *m->authtypes = camel_service_query_auth_types (service, &mm->ex);
    else
        camel_service_connect (service, &mm->ex);

    camel_object_unref (service);
    *m->success = !camel_exception_is_set(&mm->ex);

    camel_operation_unregister(mm->cancel);
}

static struct _mail_msg_op check_service_op = {
    check_service_describe,
    check_service_check,
    NULL,
    NULL
};

static void
check_response (GtkDialog *dialog, int button, gpointer data)
{
    int *msg_id = data;

    mail_msg_cancel (*msg_id);
}

/**
 * mail_config_check_service:
 * @url: service url
 * @type: provider type
 * @authtypes: set to list of supported authtypes on return if non-%NULL.
 *
 * Checks the service for validity. If @authtypes is non-%NULL, it will
 * be filled in with a list of supported authtypes.
 *
 * Return value: %TRUE on success or %FALSE on error.
 **/
gboolean
mail_config_check_service (const char *url, CamelProviderType type, GList **authtypes, GtkWindow *window)
{
    static GtkWidget *dialog = NULL;
    gboolean ret = FALSE;
    struct _check_msg *m;
    GtkWidget *label;
    int id;
    
    if (dialog) {
        gdk_window_raise (dialog->window);
        *authtypes = NULL;
        return FALSE;
    }
    
    m = mail_msg_new (&check_service_op, NULL, sizeof(*m));
    m->url = url;
    m->type = type;
    m->authtypes = authtypes;
    m->success = &ret;
    
    id = m->msg.seq;
    e_thread_put(mail_thread_queued, (EMsg *)m);

    dialog = gtk_dialog_new_with_buttons(_("Connecting to server..."), window, GTK_DIALOG_DESTROY_WITH_PARENT,
                         GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                         NULL);
    label = gtk_label_new (_("Connecting to server..."));
    gtk_box_pack_start (GTK_BOX(GTK_DIALOG (dialog)->vbox),
                label, TRUE, TRUE, 10);
    g_signal_connect(dialog, "response", G_CALLBACK (check_response), &id);
    gtk_widget_show_all (dialog);
    
    mail_msg_wait(id);
    
    gtk_widget_destroy (dialog);
    dialog = NULL;
    
    return ret;
}

/* MailConfig Bonobo object */
#define PARENT_TYPE BONOBO_X_OBJECT_TYPE
static BonoboObjectClass *parent_class = NULL;

/* For the bonobo object */
typedef struct _EvolutionMailConfig EvolutionMailConfig;
typedef struct _EvolutionMailConfigClass EvolutionMailConfigClass;

struct _EvolutionMailConfig {
    BonoboXObject parent;
};

struct _EvolutionMailConfigClass {
    BonoboXObjectClass parent_class;

    POA_GNOME_Evolution_MailConfig__epv epv;
};

static gboolean
do_config_write (gpointer data)
{
    config_write_timeout = 0;
    mail_config_write ();
    return FALSE;
}

static void
impl_GNOME_Evolution_MailConfig_addAccount (PortableServer_Servant servant,
                        const GNOME_Evolution_MailConfig_Account *account,
                        CORBA_Environment *ev)
{
    GNOME_Evolution_MailConfig_Service source, transport;
    GNOME_Evolution_MailConfig_Identity id;
    MailConfigAccount *mail_account;
    MailConfigService *mail_service;
    MailConfigIdentity *mail_id;
    
    if (mail_config_get_account_by_name (account->name)) {
        /* FIXME: we need an exception. */
        return;
    }
    
    mail_account = g_new0 (MailConfigAccount, 1);
    mail_account->name = g_strdup (account->name);
    mail_account->enabled = source.enabled;
    
    /* Copy ID */
    id = account->id;
    mail_id = g_new0 (MailConfigIdentity, 1);
    mail_id->name = g_strdup (id.name);
    mail_id->address = g_strdup (id.address);
    mail_id->reply_to = g_strdup (id.reply_to);
    mail_id->organization = g_strdup (id.organization);
    
    mail_account->id = mail_id;
    
    /* Copy source */
    source = account->source;
    mail_service = g_new0 (MailConfigService, 1);
    if (source.url == NULL || strcmp (source.url, "none://") == 0) {
        mail_service->url = NULL;
    } else {
        mail_service->url = g_strdup (source.url);
    }
    mail_service->keep_on_server = source.keep_on_server;
    mail_service->auto_check = source.auto_check;
    mail_service->auto_check_time = source.auto_check_time;
    mail_service->save_passwd = source.save_passwd;
    
    mail_account->source = mail_service;
    
    /* Copy transport */
    transport = account->transport;
    mail_service = g_new0 (MailConfigService, 1);
    if (transport.url == NULL) {
        mail_service->url = NULL;
    } else {
        mail_service->url = g_strdup (transport.url);
    }
    mail_service->url = g_strdup (transport.url);
    mail_service->keep_on_server = transport.keep_on_server;
    mail_service->auto_check = transport.auto_check;
    mail_service->auto_check_time = transport.auto_check_time;
    mail_service->save_passwd = transport.save_passwd;
    
    mail_account->transport = mail_service;
    
    /* Add new account */
    mail_config_add_account (mail_account);
    
    /* Don't write out the config right away in case the remote
     * component is creating or removing multiple accounts.
     */
    if (!config_write_timeout)
        config_write_timeout = g_timeout_add (2000, do_config_write, NULL);
}

static void
impl_GNOME_Evolution_MailConfig_removeAccount (PortableServer_Servant servant,
                           const CORBA_char *name,
                           CORBA_Environment *ev)
{
    MailConfigAccount *account;

    account = (MailConfigAccount *)mail_config_get_account_by_name (name);
    if (account)
        mail_config_remove_account (account);

    /* Don't write out the config right away in case the remote
     * component is creating or removing multiple accounts.
     */
    if (!config_write_timeout)
        config_write_timeout = g_timeout_add (2000, do_config_write, NULL);
}

static void
evolution_mail_config_class_init (EvolutionMailConfigClass *klass)
{
    POA_GNOME_Evolution_MailConfig__epv *epv = &klass->epv;

    parent_class = g_type_class_ref(PARENT_TYPE);
    epv->addAccount = impl_GNOME_Evolution_MailConfig_addAccount;
    epv->removeAccount = impl_GNOME_Evolution_MailConfig_removeAccount;
}

static void
evolution_mail_config_init (EvolutionMailConfig *config)
{
}

BONOBO_X_TYPE_FUNC_FULL (EvolutionMailConfig,
             GNOME_Evolution_MailConfig,
             PARENT_TYPE,
             evolution_mail_config);

static BonoboObject *
evolution_mail_config_factory_fn (BonoboGenericFactory *factory,
                  const char *id,
                  void *closure)
{
    EvolutionMailConfig *config;

    config = g_object_new (evolution_mail_config_get_type (), NULL);

    return BONOBO_OBJECT (config);
}

gboolean
evolution_mail_config_factory_init (void)
{
    BonoboGenericFactory *factory;
    
    factory = bonobo_generic_factory_new (MAIL_CONFIG_IID, 
                          evolution_mail_config_factory_fn,
                          NULL);
    if (factory == NULL) {
        g_warning ("Error starting MailConfig");
        return FALSE;
    }

    bonobo_running_context_auto_exit_unref (BONOBO_OBJECT (factory));
    return TRUE;
}

GList *
mail_config_get_signature_list (void)
{
    return config->signature_list;
}

static gchar *
get_new_signature_filename ()
{
    struct stat st_buf;
    gchar *filename;
    gint i;

    filename = g_build_filename (evolution_dir, "/signatures", NULL);
    if (lstat (filename, &st_buf)) {
        if (errno == ENOENT) {
            if (mkdir (filename, 0700))
                g_warning ("Fatal problem creating %s/signatures directory.", evolution_dir);
        } else
            g_warning ("Fatal problem with %s/signatures directory.", evolution_dir);
    }
    g_free (filename);

    for (i = 0; ; i ++) {
        filename = g_strdup_printf ("%s/signatures/signature-%d", evolution_dir, i);
        if (lstat (filename, &st_buf) == - 1 && errno == ENOENT) {
            gint fd;

            fd = creat (filename, 0600);
            if (fd >= 0) {
                close (fd);
                return filename;
            }
        }
        g_free (filename);
    }

    return NULL;
}

MailConfigSignature *
mail_config_signature_add (gboolean html, const gchar *script)
{
    MailConfigSignature *sig;

    sig = g_new0 (MailConfigSignature, 1);

    /* printf ("mail_config_signature_add %d\n", config->signatures); */
    sig->id = config->signatures;
    sig->name = g_strdup (_("Unnamed"));
    if (script)
        sig->script = g_strdup (script);
    else
        sig->filename = get_new_signature_filename ();
    sig->html = html;

    config->signature_list = g_list_append (config->signature_list, sig);
    config->signatures ++;

    config_write_signature (sig, sig->id);
    config_write_signatures_num ();

    mail_config_signature_emit_event (MAIL_CONFIG_SIG_EVENT_ADDED, sig);
    /* printf ("mail_config_signature_add end\n"); */

    return sig;
}

static void
delete_unused_signature_file (const gchar *filename)
{
    gint len;
    gchar *signatures_dir;

    signatures_dir = g_strconcat (evolution_dir, "/signatures", NULL);

    /* remove signature file if it's in evolution dir and no other signature uses it */
    len = strlen (signatures_dir);
    if (filename && !strncmp (filename, signatures_dir, len)) {
        GList *l;
        gboolean only_one = TRUE;

        for (l = config->signature_list; l; l = l->next) {
            if (((MailConfigSignature *)l->data)->filename
                && !strcmp (filename, ((MailConfigSignature *)l->data)->filename)) {
                only_one = FALSE;
                break;
            }
        }

        if (only_one) {
            unlink (filename);
        }
    }

    g_free (signatures_dir);
}

void
mail_config_signature_delete (MailConfigSignature *sig)
{
    GList *l, *next;
    GSList *al;
    gboolean after = FALSE;

    for (al = config->accounts; al; al = al->next) {
        MailConfigAccount *account;

        account = (MailConfigAccount *) al->data;

        if (account->id->def_signature == sig)
            account->id->def_signature = NULL;
    }

    for (l = config->signature_list; l; l = next) {
        next = l->next;
        if (after)
            ((MailConfigSignature *) l->data)->id --;
        else if (l->data == sig) {
            config->signature_list = g_list_remove_link (config->signature_list, l);
            after = TRUE;
            config->signatures --;
        }
    }

    config_write_signatures ();
    delete_unused_signature_file (sig->filename);
    /* printf ("signatures: %d\n", config->signatures); */
    mail_config_signature_emit_event (MAIL_CONFIG_SIG_EVENT_DELETED, sig);
    signature_destroy (sig);
}

void
mail_config_signature_write (MailConfigSignature *sig)
{
    config_write_signature (sig, sig->id);
}

void
mail_config_signature_set_filename (MailConfigSignature *sig, const gchar *filename)
{
    gchar *old_filename = sig->filename;

    sig->filename = g_strdup (filename);
    if (old_filename) {
        delete_unused_signature_file (old_filename);
        g_free (old_filename);
    }
    mail_config_signature_write (sig);
}

void
mail_config_signature_set_name (MailConfigSignature *sig, const gchar *name)
{
    g_free (sig->name);
    sig->name = g_strdup (name);

    mail_config_signature_write (sig);
    mail_config_signature_emit_event (MAIL_CONFIG_SIG_EVENT_NAME_CHANGED, sig);
}

static GList *clients = NULL;

void
mail_config_signature_register_client (MailConfigSignatureClient client, gpointer data)
{
    clients = g_list_append (clients, client);
    clients = g_list_append (clients, data);
}

void
mail_config_signature_unregister_client (MailConfigSignatureClient client, gpointer data)
{
    GList *link;

    link = g_list_find (clients, data);
    clients = g_list_remove_link (clients, link->prev);
    clients = g_list_remove_link (clients, link);
}

void
mail_config_signature_emit_event (MailConfigSigEvent event, MailConfigSignature *sig)
{
    GList *l, *next;

    for (l = clients; l; l = next) {
        next = l->next->next;
        (*((MailConfigSignatureClient) l->data)) (event, sig, l->next->data);
    }
}

gchar *
mail_config_signature_run_script (gchar *script)
{
    GConfClient *gconf;
    int result, status;
    int in_fds[2];
    pid_t pid;
    
    if (pipe (in_fds) == -1) {
        g_warning ("Failed to create pipe to '%s': %s", script, g_strerror (errno));
        return NULL;
    }
    
    gconf = gconf_client_get_default ();
    
    if (!(pid = fork ())) {
        /* child process */
        int maxfd, i;
        
        close (in_fds [0]);
        if (dup2 (in_fds[1], STDOUT_FILENO) < 0)
            _exit (255);
        close (in_fds [1]);
        
        setsid ();
        
        maxfd = sysconf (_SC_OPEN_MAX);
        if (maxfd > 0) {
            for (i = 0; i < maxfd; i++) {
                if (i != STDIN_FILENO && i != STDOUT_FILENO && i != STDERR_FILENO)
                    close (i);
            }
        }
        
        
        execlp (script, script, NULL);
        g_warning ("Could not execute %s: %s\n", script, g_strerror (errno));
        _exit (255);
    } else if (pid < 0) {
        g_warning ("Failed to create create child process '%s': %s", script, g_strerror (errno));
        return NULL;
    } else {
        CamelStreamFilter *filtered_stream;
        CamelStreamMem *memstream;
        CamelMimeFilter *charenc;
        CamelStream *stream;
        GByteArray *buffer;
        const char *charset;
        char *content;
        
        /* parent process */
        close (in_fds[1]);
        
        stream = camel_stream_fs_new_with_fd (in_fds[0]);
        
        memstream = (CamelStreamMem *) camel_stream_mem_new ();
        buffer = g_byte_array_new ();
        camel_stream_mem_set_byte_array (memstream, buffer);
        
        camel_stream_write_to_stream (stream, (CamelStream *) memstream);
        camel_object_unref (stream);
        
        /* signature scripts are supposed to generate UTF-8 content, but because users
           are known to not ever read the manual... we try to do our best if the
                   content isn't valid UTF-8 by assuming that the content is in the user's
           preferred charset. */
        if (!g_utf8_validate (buffer->data, buffer->len, NULL)) {
            stream = (CamelStream *) memstream;
            memstream = (CamelStreamMem *) camel_stream_mem_new ();
            camel_stream_mem_set_byte_array (memstream, g_byte_array_new ());
            
            filtered_stream = camel_stream_filter_new_with_stream (stream);
            camel_object_unref (stream);
            
            /* FIXME: if the composer ever gets it's own charset setting, use that instead? */
            charset = gconf_client_get_string (gconf, "/apps/evolution/mail/format/charset", NULL);
            charenc = (CamelMimeFilter *) camel_mime_filter_charset_new_convert (charset, "utf-8");
            camel_stream_filter_add (filtered_stream, charenc);
            camel_object_unref (charenc);
            
            camel_stream_write_to_stream ((CamelStream *) filtered_stream, (CamelStream *) memstream);
            camel_object_unref (filtered_stream);
            g_byte_array_free (buffer, TRUE);
            
            buffer = memstream->buffer;
        }
        
        camel_object_unref (memstream);
        
        g_byte_array_append (buffer, "", 1);
        content = buffer->data;
        g_byte_array_free (buffer, FALSE);
        
        /* wait for the script process to terminate */
        result = waitpid (pid, &status, 0);
        
        if (result == -1 && errno == EINTR) {
            /* child process is hanging... */
            kill (pid, SIGTERM);
            sleep (1);
            result = waitpid (pid, &status, WNOHANG);
            if (result == 0) {
                /* ...still hanging, set phasers to KILL */
                kill (pid, SIGKILL);
                sleep (1);
                result = waitpid (pid, &status, WNOHANG);
            }
        }
        
        return content;
    }
}

void
mail_config_signature_set_html (MailConfigSignature *sig, gboolean html)
{
    if (sig->html != html) {
        sig->html = html;
        mail_config_signature_write (sig);
        mail_config_signature_emit_event (MAIL_CONFIG_SIG_EVENT_HTML_CHANGED, sig);
    }
}

int
mail_config_get_time_24hour(void)
{
    return config->time_24hour;
}