Sylpheed

/*

 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client

 * Copyright (C) 1999-2002 Hiroyuki Yamamoto

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 */

#ifdef HAVE_CONFIG_H

#  include "config.h"

#endif

#if USE_SSL

#include "defs.h"

#include <glib.h>

#include "intl.h"

#include "utils.h"

#include "ssl.h"

static SSL_CTX *ssl_ctx_SSLv23;

static SSL_CTX *ssl_ctx_TLSv1;

void ssl_init(void)

{

        SSL_library_init();

        SSL_load_error_strings();

        ssl_ctx_SSLv23 = SSL_CTX_new(SSLv23_client_method());

        if (ssl_ctx_SSLv23 == NULL) {

                debug_print(_("SSLv23 not available\n"));

        } else {

                debug_print(_("SSLv23 available\n"));

        }

        ssl_ctx_TLSv1 = SSL_CTX_new(TLSv1_client_method());

        if (ssl_ctx_TLSv1 == NULL) {

                debug_print(_("TLSv1 not available\n"));

        } else {

                debug_print(_("TLSv1 available\n"));

        }

}

void ssl_done(void)

{

        if (ssl_ctx_SSLv23) {

                SSL_CTX_free(ssl_ctx_SSLv23);

        }

        if (ssl_ctx_TLSv1) {

                SSL_CTX_free(ssl_ctx_TLSv1);

        }

}

gboolean ssl_init_socket(SockInfo *sockinfo)

{

        return ssl_init_socket_with_method(sockinfo, SSL_METHOD_SSLv23);

}

gboolean ssl_init_socket_with_method(SockInfo *sockinfo, SSLMethod method)

{

        X509 *server_cert;

        gint ret;

        switch (method) {

        case SSL_METHOD_SSLv23:

                if (!ssl_ctx_SSLv23) {

                        g_warning(_("SSL method not available\n"));

                        return FALSE;

                }

                sockinfo->ssl = SSL_new(ssl_ctx_SSLv23);

                break;

        case SSL_METHOD_TLSv1:

                if (!ssl_ctx_TLSv1) {

                        g_warning(_("SSL method not available\n"));

                        return FALSE;

                }

                sockinfo->ssl = SSL_new(ssl_ctx_TLSv1);

                break;

        default:

                g_warning(_("Unknown SSL method *PROGRAM BUG*\n"));

                return FALSE;

                break;

        }

        if (sockinfo->ssl == NULL) {

                g_warning(_("Error creating ssl context\n"));

                return FALSE;

        }

        SSL_set_fd(sockinfo->ssl, sockinfo->sock);

        if ((ret = SSL_connect(sockinfo->ssl)) == -1) {

                g_warning(_("SSL connect failed (%s)\n"),

                          ERR_error_string(ERR_get_error(), NULL));

                return FALSE;

        }

        /* Get the cipher */

        debug_print(_("SSL connection using %s\n"),

                    SSL_get_cipher(sockinfo->ssl));

        /* Get server's certificate (note: beware of dynamic allocation) */

        if ((server_cert = SSL_get_peer_certificate(sockinfo->ssl)) != NULL) {

                gchar *str;

                debug_print(_("Server certificate:\n"));

                if ((str = X509_NAME_oneline(X509_get_subject_name(server_cert), 0, 0)) != NULL) {

                        debug_print(_("  Subject: %s\n"), str);

                        free(str);

                }

                if ((str = X509_NAME_oneline(X509_get_issuer_name(server_cert), 0, 0)) != NULL) {

                        debug_print(_("  Issuer: %s\n"), str);

                        free(str);

                }

                X509_free(server_cert);

        }

        return TRUE;

}

void ssl_done_socket(SockInfo *sockinfo)

{

        if (sockinfo->ssl) {

                SSL_free(sockinfo->ssl);

        }

}

#endif /* USE_SSL */