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/*
* libwebsockets - client-related ssl code independent of backend
*
* Copyright (C) 2010-2017 Andy Green <andy@warmcat.com>
*
* 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:
* version 2.1 of the License.
*
* 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 Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include "core/private.h"
int
lws_ssl_client_connect1(struct lws *wsi)
{
struct lws_context *context = wsi->context;
int n = 0;
lws_latency_pre(context, wsi);
n = lws_tls_client_connect(wsi);
lws_latency(context, wsi, "SSL_connect hs", n, n > 0);
switch (n) {
case LWS_SSL_CAPABLE_ERROR:
return -1;
case LWS_SSL_CAPABLE_DONE:
return 1; /* connected */
case LWS_SSL_CAPABLE_MORE_SERVICE_WRITE:
lws_callback_on_writable(wsi);
/* fallthru */
case LWS_SSL_CAPABLE_MORE_SERVICE_READ:
lwsi_set_state(wsi, LRS_WAITING_SSL);
break;
case LWS_SSL_CAPABLE_MORE_SERVICE:
break;
}
return 0; /* retry */
}
int
lws_ssl_client_connect2(struct lws *wsi, char *errbuf, int len)
{
int n = 0;
if (lwsi_state(wsi) == LRS_WAITING_SSL) {
lws_latency_pre(wsi->context, wsi);
n = lws_tls_client_connect(wsi);
lwsl_debug("%s: SSL_connect says %d\n", __func__, n);
lws_latency(wsi->context, wsi,
"SSL_connect LRS_WAITING_SSL", n, n > 0);
switch (n) {
case LWS_SSL_CAPABLE_ERROR:
lws_snprintf(errbuf, len, "client connect failed");
return -1;
case LWS_SSL_CAPABLE_DONE:
break; /* connected */
case LWS_SSL_CAPABLE_MORE_SERVICE_WRITE:
lws_callback_on_writable(wsi);
/* fallthru */
case LWS_SSL_CAPABLE_MORE_SERVICE_READ:
lwsi_set_state(wsi, LRS_WAITING_SSL);
/* fallthru */
case LWS_SSL_CAPABLE_MORE_SERVICE:
return 0;
}
}
if (lws_tls_client_confirm_peer_cert(wsi, errbuf, len))
return -1;
return 1;
}
int lws_context_init_client_ssl(const struct lws_context_creation_info *info,
struct lws_vhost *vhost)
{
const char *ca_filepath = info->ssl_ca_filepath;
const char *cipher_list = info->ssl_cipher_list;
const char *private_key_filepath = info->ssl_private_key_filepath;
const char *cert_filepath = info->ssl_cert_filepath;
struct lws wsi;
if (vhost->options & LWS_SERVER_OPTION_ONLY_RAW)
return 0;
/*
* for backwards-compatibility default to using ssl_... members, but
* if the newer client-specific ones are given, use those
*/
if (info->client_ssl_cipher_list)
cipher_list = info->client_ssl_cipher_list;
if (info->client_ssl_cert_filepath)
cert_filepath = info->client_ssl_cert_filepath;
if (info->client_ssl_private_key_filepath)
private_key_filepath = info->client_ssl_private_key_filepath;
if (info->client_ssl_ca_filepath)
ca_filepath = info->client_ssl_ca_filepath;
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT))
return 0;
if (vhost->tls.ssl_client_ctx)
return 0;
if (info->provided_client_ssl_ctx) {
/* use the provided OpenSSL context if given one */
vhost->tls.ssl_client_ctx = info->provided_client_ssl_ctx;
/* nothing for lib to delete */
vhost->tls.user_supplied_ssl_ctx = 1;
return 0;
}
if (lws_tls_client_create_vhost_context(vhost, info, cipher_list,
ca_filepath, cert_filepath,
private_key_filepath))
return 1;
lwsl_notice("created client ssl context for %s\n", vhost->name);
/*
* give him a fake wsi with context set, so he can use
* lws_get_context() in the callback
*/
memset(&wsi, 0, sizeof(wsi));
wsi.vhost = vhost;
wsi.context = vhost->context;
vhost->protocols[0].callback(&wsi,
LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS,
vhost->tls.ssl_client_ctx, NULL, 0);
return 0;
}
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