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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-nntp-provider.c: nntp provider registration code */

/* 
 * Authors :
 *   Chris Toshok <toshok@ximian.com>
 *
 * Copyright (C) 2000 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 <string.h>
#include "camel-nntp-store.h"
#include "camel-provider.h"
#include "camel-session.h"

static void add_hash (guint *hash, char *s);
static guint nntp_url_hash (gconstpointer key);
static gint check_equal (char *s1, char *s2);
static gint nntp_url_equal (gconstpointer a, gconstpointer b);

CamelProviderConfEntry nntp_conf_entries[] = {
    { CAMEL_PROVIDER_CONF_SECTION_START, "folders", NULL,
      N_("Folders") },
    { CAMEL_PROVIDER_CONF_CHECKBOX, "show_short_notation", NULL,
      N_("Show folders in short notation (e.g. c.o.linux rather than comp.os.linux)"), "1" },
    { CAMEL_PROVIDER_CONF_CHECKBOX, "folder_hierarchy_relative", NULL,
      N_("In the subscription dialog, show relative folder names"), "1" },
    { CAMEL_PROVIDER_CONF_SECTION_END },
    { CAMEL_PROVIDER_CONF_END }
};

static CamelProvider news_provider = {
    "nntp",
    N_("USENET news"),

    N_("This is a provider for reading from and posting to"
       "USENET newsgroups."),

    "news",

    CAMEL_PROVIDER_IS_REMOTE | CAMEL_PROVIDER_IS_SOURCE |
    CAMEL_PROVIDER_IS_STORAGE,

    CAMEL_URL_NEED_HOST | CAMEL_URL_ALLOW_USER |
    CAMEL_URL_ALLOW_PASSWORD | CAMEL_URL_ALLOW_AUTH,

    nntp_conf_entries

    /* ... */
};

CamelServiceAuthType camel_nntp_password_authtype = {
    N_("Password"),

    N_("This option will authenticate with the NNTP server using a "
       "plaintext password."),

    "",
    TRUE
};

void
camel_provider_module_init (CamelSession *session)
{
    news_provider.object_types[CAMEL_PROVIDER_STORE] =
        camel_nntp_store_get_type();

    news_provider.url_hash = nntp_url_hash;
    news_provider.url_equal = nntp_url_equal;
    news_provider.authtypes = g_list_append (NULL, &camel_nntp_password_authtype);
    
    camel_session_register_provider (session, &news_provider);
}

static void
add_hash (guint *hash, char *s)
{
    if (s)
        *hash ^= g_str_hash(s);
}

static guint
nntp_url_hash (gconstpointer key)
{
    const CamelURL *u = (CamelURL *)key;
    guint hash = 0;

    add_hash (&hash, u->user);
    add_hash (&hash, u->host);
    hash ^= u->port;
    
    return hash;
}

static gint
check_equal (char *s1, char *s2)
{
    if (s1 == NULL) {
        if (s2 == NULL)
            return TRUE;
        else
            return FALSE;
    }
    
    if (s2 == NULL)
        return FALSE;

    return strcmp (s1, s2) == 0;
}

static gint
nntp_url_equal (gconstpointer a, gconstpointer b)
{
    const CamelURL *u1 = a, *u2 = b;
    
    return check_equal(u1->protocol, u2->protocol)
        && check_equal (u1->user, u2->user)
        && check_equal (u1->host, u2->host)
        && u1->port == u2->port;
}