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/*
* LibSylph -- E-Mail client library
* Copyright (C) 1999-2005 Hiroyuki Yamamoto
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#if USE_SSL
#include "defs.h"
#include <glib.h>
#include <glib/gi18n.h>
#include "utils.h"
#include "ssl.h"
static SSL_CTX *ssl_ctx_SSLv23;
static SSL_CTX *ssl_ctx_TLSv1;
void ssl_init(void)
{
gchar *certs_dir;
SSL_library_init();
SSL_load_error_strings();
certs_dir = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, "certs", NULL);
if (!is_dir_exist(certs_dir)) {
debug_print("%s doesn't exist, or not a directory.\n",
certs_dir);
g_free(certs_dir);
certs_dir = NULL;
}
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"));
if (certs_dir &&
!SSL_CTX_load_verify_locations(ssl_ctx_SSLv23, NULL,
certs_dir))
g_warning("SSLv23 SSL_CTX_load_verify_locations failed.\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"));
if (certs_dir &&
!SSL_CTX_load_verify_locations(ssl_ctx_TLSv1, NULL,
certs_dir))
g_warning("TLSv1 SSL_CTX_load_verify_locations failed.\n");
}
g_free(certs_dir);
}
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;
glong verify_result;
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);
g_free(str);
}
if ((str = X509_NAME_oneline(X509_get_issuer_name(server_cert), 0, 0)) != NULL) {
debug_print(_(" Issuer: %s\n"), str);
g_free(str);
}
verify_result = SSL_get_verify_result(sockinfo->ssl);
if (verify_result == X509_V_OK)
debug_print("SSL verify OK\n");
else
g_warning("%s: SSL certificate verify failed (%ld: %s)\n",
sockinfo->hostname, verify_result,
X509_verify_cert_error_string(verify_result));
X509_free(server_cert);
}
return TRUE;
}
void ssl_done_socket(SockInfo *sockinfo)
{
if (sockinfo->ssl) {
SSL_free(sockinfo->ssl);
}
}
#endif /* USE_SSL */
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