int
lws_tls_server_client_cert_verify_config(struct lws_vhost *vh)
{
int verify_options = SSL_VERIFY_PEER;
/* as a server, are we requiring clients to identify themselves? */
if (!lws_check_opt(vh->options,
LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT)) {
lwsl_notice("no client cert required\n");
return 0;
}
/*
* The wrapper has this messed-up mapping:
*
* else if (ctx->verify_mode == SSL_VERIFY_FAIL_IF_NO_PEER_CERT)
* mode = MBEDTLS_SSL_VERIFY_OPTIONAL;
*
* ie the meaning is inverted. So where we should test for ! we don't
*/
if (lws_check_opt(vh->options, LWS_SERVER_OPTION_PEER_CERT_NOT_REQUIRED))
verify_options = SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
lwsl_notice("%s: vh %s requires client cert %d\n", __func__, vh->name,
verify_options);
SSL_CTX_set_verify(vh->ssl_ctx, verify_options, NULL);
return 0;
}
void
lws_libuv_destroyloop(struct lws_context *context, int tsi)
{
struct lws_context_per_thread *pt = &context->pt[tsi];
// struct lws_context *ctx;
int m, budget = 100, ns;
if (!lws_check_opt(context->options, LWS_SERVER_OPTION_LIBUV))
return;
if (!pt->io_loop_uv)
return;
lwsl_notice("%s: closing signals + timers context %p\n", __func__, context);
if (context->use_ev_sigint) {
uv_signal_stop(&pt->w_sigint.uv_watcher);
ns = ARRAY_SIZE(sigs);
if (lws_check_opt(context->options, LWS_SERVER_OPTION_UV_NO_SIGSEGV_SIGFPE_SPIN))
ns = 2;
for (m = 0; m < ns; m++) {
uv_signal_stop(&pt->signals[m]);
uv_close((uv_handle_t *)&pt->signals[m], lws_uv_close_cb);
}
}
uv_timer_stop(&pt->uv_timeout_watcher);
uv_close((uv_handle_t *)&pt->uv_timeout_watcher, lws_uv_close_cb);
uv_idle_stop(&pt->uv_idle);
uv_close((uv_handle_t *)&pt->uv_idle, lws_uv_close_cb);
if (pt->ev_loop_foreign)
return;
while (budget-- && uv_run(pt->io_loop_uv, UV_RUN_NOWAIT))
;
lwsl_notice("%s: closing all loop handles context %p\n", __func__, context);
uv_stop(pt->io_loop_uv);
uv_walk(pt->io_loop_uv, lws_uv_walk_cb, NULL);
while (uv_run(pt->io_loop_uv, UV_RUN_NOWAIT))
;
#if UV_VERSION_MAJOR > 0
m = uv_loop_close(pt->io_loop_uv);
if (m == UV_EBUSY)
lwsl_err("%s: uv_loop_close: UV_EBUSY\n", __func__);
#endif
lws_free(pt->io_loop_uv);
}
LWS_VISIBLE void
lws_ssl_destroy(struct lws_vhost *vhost)
{
if (!lws_check_opt(vhost->context->options,
LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT))
return;
if (vhost->tls.ssl_ctx)
SSL_CTX_free(vhost->tls.ssl_ctx);
if (!vhost->tls.user_supplied_ssl_ctx && vhost->tls.ssl_client_ctx)
SSL_CTX_free(vhost->tls.ssl_client_ctx);
// after 1.1.0 no need
#if (OPENSSL_VERSION_NUMBER < 0x10100000)
// <= 1.0.1f = old api, 1.0.1g+ = new api
#if (OPENSSL_VERSION_NUMBER <= 0x1000106f) || defined(USE_WOLFSSL)
ERR_remove_state(0);
#else
#if OPENSSL_VERSION_NUMBER >= 0x1010005f && \
!defined(LIBRESSL_VERSION_NUMBER) && \
!defined(OPENSSL_IS_BORINGSSL)
ERR_remove_thread_state();
#else
ERR_remove_thread_state(NULL);
#endif
#endif
// after 1.1.0 no need
#if (OPENSSL_VERSION_NUMBER >= 0x10002000) && (OPENSSL_VERSION_NUMBER <= 0x10100000)
SSL_COMP_free_compression_methods();
#endif
ERR_free_strings();
EVP_cleanup();
CRYPTO_cleanup_all_ex_data();
#endif
}
LWS_VISIBLE void
lws_ssl_destroy(struct lws_vhost *vhost)
{
if (!lws_check_opt(vhost->context->options,
LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT))
return;
#if defined(LWS_USE_POLARSSL)
#else
#if defined(LWS_USE_MBEDTLS)
#else
if (vhost->ssl_ctx)
SSL_CTX_free(vhost->ssl_ctx);
if (!vhost->user_supplied_ssl_ctx && vhost->ssl_client_ctx)
SSL_CTX_free(vhost->ssl_client_ctx);
#if (OPENSSL_VERSION_NUMBER < 0x01000000) || defined(USE_WOLFSSL)
ERR_remove_state(0);
#else
#if (OPENSSL_VERSION_NUMBER >= 0x10100005L) && \
!defined(LIBRESSL_VERSION_NUMBER) && \
!defined(OPENSSL_IS_BORINGSSL)
ERR_remove_thread_state();
#else
ERR_remove_thread_state(NULL);
#endif
#endif
ERR_free_strings();
EVP_cleanup();
CRYPTO_cleanup_all_ex_data();
#endif
#endif
}
void
lws_feature_status_libuv(struct lws_context_creation_info *info)
{
if (lws_check_opt(info->options, LWS_SERVER_OPTION_LIBUV))
lwsl_notice("libuv support compiled in and enabled\n");
else
lwsl_notice("libuv support compiled in but disabled\n");
}
static void
elops_destroy_pt_uv(struct lws_context *context, int tsi)
{
struct lws_context_per_thread *pt = &context->pt[tsi];
int m, ns;
lwsl_info("%s: %d\n", __func__, tsi);
if (!lws_check_opt(context->options, LWS_SERVER_OPTION_LIBUV))
return;
if (!pt->uv.io_loop)
return;
if (pt->event_loop_destroy_processing_done)
return;
pt->event_loop_destroy_processing_done = 1;
if (!pt->event_loop_foreign) {
uv_signal_stop(&pt->w_sigint.uv.watcher);
ns = LWS_ARRAY_SIZE(sigs);
if (lws_check_opt(context->options,
LWS_SERVER_OPTION_UV_NO_SIGSEGV_SIGFPE_SPIN))
ns = 2;
for (m = 0; m < ns; m++) {
uv_signal_stop(&pt->uv.signals[m]);
uv_close((uv_handle_t *)&pt->uv.signals[m],
lws_uv_close_cb_sa);
}
} else
lwsl_debug("%s: not closing pt signals\n", __func__);
uv_timer_stop(&pt->uv.timeout_watcher);
uv_close((uv_handle_t *)&pt->uv.timeout_watcher, lws_uv_close_cb_sa);
uv_timer_stop(&pt->uv.hrtimer);
uv_close((uv_handle_t *)&pt->uv.hrtimer, lws_uv_close_cb_sa);
uv_idle_stop(&pt->uv.idle);
uv_close((uv_handle_t *)&pt->uv.idle, lws_uv_close_cb_sa);
}
int
lws_context_init_ssl_library(const struct lws_context_creation_info *info)
{
lwsl_info(" Compiled with MbedTLS support\n");
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT))
lwsl_info(" SSL disabled: no LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT\n");
return 0;
}
LWS_VISIBLE void
lws_ssl_destroy(struct lws_vhost *vhost)
{
if (!lws_check_opt(vhost->context->options,
LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT))
return;
if (vhost->tls.ssl_ctx)
SSL_CTX_free(vhost->tls.ssl_ctx);
if (!vhost->tls.user_supplied_ssl_ctx && vhost->tls.ssl_client_ctx)
SSL_CTX_free(vhost->tls.ssl_client_ctx);
if (vhost->tls.x509_client_CA)
X509_free(vhost->tls.x509_client_CA);
}
int
lws_tls_server_client_cert_verify_config(struct lws_vhost *vh)
{
int verify_options = SSL_VERIFY_PEER;
/* as a server, are we requiring clients to identify themselves? */
if (!lws_check_opt(vh->options,
LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT))
return 0;
if (!lws_check_opt(vh->options,
LWS_SERVER_OPTION_PEER_CERT_NOT_REQUIRED))
verify_options |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
SSL_CTX_set_session_id_context(vh->tls.ssl_ctx, (uint8_t *)vh->context,
sizeof(void *));
/* absolutely require the client cert */
SSL_CTX_set_verify(vh->tls.ssl_ctx, verify_options,
OpenSSL_verify_callback);
return 0;
}
LWS_VISIBLE void
lws_server_get_canonical_hostname(struct lws_context *context,
struct lws_context_creation_info *info)
{
if (lws_check_opt(info->options, LWS_SERVER_OPTION_SKIP_SERVER_CANONICAL_NAME))
return;
#if LWS_POSIX
/* find canonical hostname */
gethostname((char *)context->canonical_hostname,
sizeof(context->canonical_hostname) - 1);
lwsl_notice(" canonical_hostname = %s\n", context->canonical_hostname);
#else
(void)context;
#endif
}
int
lws_context_init_ssl_library(struct lws_context_creation_info *info)
{
#ifdef USE_WOLFSSL
#ifdef USE_OLD_CYASSL
lwsl_notice(" Compiled with CyaSSL support\n");
#else
lwsl_notice(" Compiled with wolfSSL support\n");
#endif
#else
#if defined(LWS_USE_POLARSSL)
lwsl_notice(" Compiled with PolarSSL support\n");
#else
#if defined(LWS_USE_MBEDTLS)
lwsl_notice(" Compiled with mbedTLS support\n");
#else
lwsl_notice(" Compiled with OpenSSL support\n");
#endif
#endif
#endif
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT)) {
lwsl_notice(" SSL disabled: no LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT\n");
return 0;
}
/* basic openssl init */
#if defined(LWS_USE_POLARSSL)
#else
#if defined(LWS_USE_MBEDTLS)
#else
SSL_library_init();
OpenSSL_add_all_algorithms();
SSL_load_error_strings();
openssl_websocket_private_data_index =
SSL_get_ex_new_index(0, "lws", NULL, NULL, NULL);
openssl_SSL_CTX_private_data_index = SSL_CTX_get_ex_new_index(0,
NULL, NULL, NULL, NULL);
#endif
#endif
return 0;
}
static int
lws_context_ssl_init_ecdh(struct lws_vhost *vhost)
{
#ifdef LWS_SSL_SERVER_WITH_ECDH_CERT
EC_KEY *EC_key = NULL;
EVP_PKEY *pkey;
int KeyType;
X509 *x;
if (!lws_check_opt(vhost->context->options, LWS_SERVER_OPTION_SSL_ECDH))
return 0;
lwsl_notice(" Using ECDH certificate support\n");
/* Get X509 certificate from ssl context */
x = sk_X509_value(vhost->ssl_ctx->extra_certs, 0);
if (!x) {
lwsl_err("%s: x is NULL\n", __func__);
return 1;
}
/* Get the public key from certificate */
pkey = X509_get_pubkey(x);
if (!pkey) {
lwsl_err("%s: pkey is NULL\n", __func__);
return 1;
}
/* Get the key type */
KeyType = EVP_PKEY_type(pkey->type);
if (EVP_PKEY_EC != KeyType) {
lwsl_notice("Key type is not EC\n");
return 0;
}
/* Get the key */
EC_key = EVP_PKEY_get1_EC_KEY(pkey);
/* Set ECDH parameter */
if (!EC_key) {
lwsl_err("%s: ECDH key is NULL \n", __func__);
return 1;
}
SSL_CTX_set_tmp_ecdh(vhost->ssl_ctx, EC_key);
EC_KEY_free(EC_key);
#endif
return 0;
}
int
lws_context_init_ssl_library(const struct lws_context_creation_info *info)
{
#ifdef USE_WOLFSSL
#ifdef USE_OLD_CYASSL
lwsl_info(" Compiled with CyaSSL support\n");
#else
lwsl_info(" Compiled with wolfSSL support\n");
#endif
#else
#if defined(LWS_WITH_BORINGSSL)
lwsl_info(" Compiled with BoringSSL support\n");
#else
lwsl_info(" Compiled with OpenSSL support\n");
#endif
#endif
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT)) {
lwsl_info(" SSL disabled: no "
"LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT\n");
return 0;
}
/* basic openssl init */
lwsl_info("Doing SSL library init\n");
#if OPENSSL_VERSION_NUMBER < 0x10100000L
SSL_library_init();
OpenSSL_add_all_algorithms();
SSL_load_error_strings();
#else
OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
#endif
#if defined(LWS_WITH_NETWORK)
openssl_websocket_private_data_index =
SSL_get_ex_new_index(0, "lws", NULL, NULL, NULL);
openssl_SSL_CTX_private_data_index = SSL_CTX_get_ex_new_index(0,
NULL, NULL, NULL, NULL);
#endif
return 0;
}
LWS_VISIBLE void
lws_ssl_destroy(struct lws_context *context)
{
if (!lws_check_opt(context->options, LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT))
return;
if (context->ssl_ctx)
SSL_CTX_free(context->ssl_ctx);
if (!context->user_supplied_ssl_ctx && context->ssl_client_ctx)
SSL_CTX_free(context->ssl_client_ctx);
#if (OPENSSL_VERSION_NUMBER < 0x01000000) || defined(USE_WOLFSSL)
ERR_remove_state(0);
#else
ERR_remove_thread_state(NULL);
#endif
ERR_free_strings();
EVP_cleanup();
CRYPTO_cleanup_all_ex_data();
}
LWS_VISIBLE int
elops_init_pt_uv(struct lws_context *context, void *_loop, int tsi)
{
struct lws_context_per_thread *pt = &context->pt[tsi];
struct lws_vhost *vh = context->vhost_list;
int status = 0, n, ns, first = 1;
uv_loop_t *loop = (uv_loop_t *)_loop;
if (!pt->uv.io_loop) {
if (!loop) {
loop = lws_malloc(sizeof(*loop), "libuv loop");
if (!loop) {
lwsl_err("OOM\n");
return -1;
}
#if UV_VERSION_MAJOR > 0
uv_loop_init(loop);
#else
lwsl_err("This libuv is too old to work...\n");
return 1;
#endif
pt->event_loop_foreign = 0;
} else {
lwsl_notice(" Using foreign event loop...\n");
pt->event_loop_foreign = 1;
}
pt->uv.io_loop = loop;
uv_idle_init(loop, &pt->uv.idle);
LWS_UV_REFCOUNT_STATIC_HANDLE_NEW(&pt->uv.idle, context);
ns = LWS_ARRAY_SIZE(sigs);
if (lws_check_opt(context->options,
LWS_SERVER_OPTION_UV_NO_SIGSEGV_SIGFPE_SPIN))
ns = 2;
if (!pt->event_loop_foreign) {
assert(ns <= (int)LWS_ARRAY_SIZE(pt->uv.signals));
for (n = 0; n < ns; n++) {
uv_signal_init(loop, &pt->uv.signals[n]);
LWS_UV_REFCOUNT_STATIC_HANDLE_NEW(&pt->uv.signals[n],
context);
pt->uv.signals[n].data = pt->context;
uv_signal_start(&pt->uv.signals[n],
lws_uv_signal_handler, sigs[n]);
}
}
} else
first = 0;
/*
* Initialize the accept wsi read watcher with all the listening sockets
* and register a callback for read operations
*
* We have to do it here because the uv loop(s) are not
* initialized until after context creation.
*/
while (vh) {
if (elops_init_vhost_listen_wsi_uv(vh->lserv_wsi) == -1)
return -1;
vh = vh->vhost_next;
}
if (!first)
return status;
uv_timer_init(pt->uv.io_loop, &pt->uv.timeout_watcher);
LWS_UV_REFCOUNT_STATIC_HANDLE_NEW(&pt->uv.timeout_watcher, context);
uv_timer_start(&pt->uv.timeout_watcher, lws_uv_timeout_cb, 10, 1000);
uv_timer_init(pt->uv.io_loop, &pt->uv.hrtimer);
LWS_UV_REFCOUNT_STATIC_HANDLE_NEW(&pt->uv.hrtimer, context);
return status;
}
LWS_VISIBLE int
lws_uv_initloop(struct lws_context *context, uv_loop_t *loop, int tsi)
{
struct lws_context_per_thread *pt = &context->pt[tsi];
struct lws_vhost *vh = context->vhost_list;
int status = 0, n, ns;
if (!loop) {
loop = lws_malloc(sizeof(*loop));
if (!loop) {
lwsl_err("OOM\n");
return -1;
}
#if UV_VERSION_MAJOR > 0
uv_loop_init(loop);
#else
lwsl_err("This libuv is too old to work...\n");
return 1;
#endif
pt->ev_loop_foreign = 0;
} else {
lwsl_notice(" Using foreign event loop...\n");
pt->ev_loop_foreign = 1;
}
pt->io_loop_uv = loop;
uv_idle_init(loop, &pt->uv_idle);
ns = ARRAY_SIZE(sigs);
if (lws_check_opt(context->options, LWS_SERVER_OPTION_UV_NO_SIGSEGV_SIGFPE_SPIN))
ns = 2;
if (pt->context->use_ev_sigint) {
assert(ns <= ARRAY_SIZE(pt->signals));
for (n = 0; n < ns; n++) {
uv_signal_init(loop, &pt->signals[n]);
pt->signals[n].data = pt->context;
uv_signal_start(&pt->signals[n],
context->lws_uv_sigint_cb, sigs[n]);
}
}
/*
* Initialize the accept wsi read watcher with all the listening sockets
* and register a callback for read operations
*
* We have to do it here because the uv loop(s) are not
* initialized until after context creation.
*/
while (vh) {
if (vh->lserv_wsi) {
vh->lserv_wsi->w_read.context = context;
n = uv_poll_init_socket(pt->io_loop_uv,
&vh->lserv_wsi->w_read.uv_watcher,
vh->lserv_wsi->sock);
if (n) {
lwsl_err("uv_poll_init failed %d, sockfd=%p\n",
n, (void *)(long)vh->lserv_wsi->sock);
return -1;
}
lws_libuv_io(vh->lserv_wsi, LWS_EV_START | LWS_EV_READ);
}
vh = vh->vhost_next;
}
uv_timer_init(pt->io_loop_uv, &pt->uv_timeout_watcher);
uv_timer_start(&pt->uv_timeout_watcher, lws_uv_timeout_cb, 10, 1000);
return status;
}
struct lws *
lws_client_connect_2(struct lws *wsi)
{
#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
struct lws_context *context = wsi->context;
struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
const char *adsin;
struct lws *wsi_piggyback = NULL;
struct lws_pollfd pfd;
ssize_t plen = 0;
#endif
struct addrinfo *result;
#if defined(LWS_WITH_UNIX_SOCK)
struct sockaddr_un sau;
char unix_skt = 0;
#endif
const char *ads;
sockaddr46 sa46;
const struct sockaddr *psa;
int n, port;
const char *cce = "", *iface;
const char *meth = NULL;
#ifdef LWS_WITH_IPV6
char ipv6only = lws_check_opt(wsi->vhost->options,
LWS_SERVER_OPTION_IPV6_V6ONLY_MODIFY |
LWS_SERVER_OPTION_IPV6_V6ONLY_VALUE);
#if defined(__ANDROID__)
ipv6only = 0;
#endif
#endif
lwsl_client("%s: %p\n", __func__, wsi);
#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
if (!wsi->http.ah) {
cce = "ah was NULL at cc2";
lwsl_err("%s\n", cce);
goto oom4;
}
/* we can only piggyback GET or POST */
meth = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_METHOD);
if (meth && strcmp(meth, "GET") && strcmp(meth, "POST"))
goto create_new_conn;
/* we only pipeline connections that said it was okay */
if (!wsi->client_pipeline)
goto create_new_conn;
/*
* let's take a look first and see if there are any already-active
* client connections we can piggy-back on.
*/
adsin = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS);
lws_vhost_lock(wsi->vhost); /* ----------------------------------- { */
lws_start_foreach_dll_safe(struct lws_dll_lws *, d, d1,
wsi->vhost->dll_active_client_conns.next) {
struct lws *w = lws_container_of(d, struct lws,
dll_active_client_conns);
lwsl_debug("%s: check %s %s %d %d\n", __func__, adsin,
w->client_hostname_copy, wsi->c_port, w->c_port);
if (w != wsi && w->client_hostname_copy &&
!strcmp(adsin, w->client_hostname_copy) &&
#if defined(LWS_WITH_TLS)
(wsi->tls.use_ssl & LCCSCF_USE_SSL) ==
(w->tls.use_ssl & LCCSCF_USE_SSL) &&
#endif
wsi->c_port == w->c_port) {
/* someone else is already connected to the right guy */
/* do we know for a fact pipelining won't fly? */
if (w->keepalive_rejected) {
lwsl_info("defeating pipelining due to no "
"keepalive on server\n");
lws_vhost_unlock(wsi->vhost); /* } ---------- */
goto create_new_conn;
}
#if defined (LWS_WITH_HTTP2)
/*
* h2: in usable state already: just use it without
* going through the queue
*/
if (w->client_h2_alpn &&
(lwsi_state(w) == LRS_H2_WAITING_TO_SEND_HEADERS ||
lwsi_state(w) == LRS_ESTABLISHED)) {
lwsl_info("%s: just join h2 directly\n",
__func__);
wsi->client_h2_alpn = 1;
lws_wsi_h2_adopt(w, wsi);
lws_vhost_unlock(wsi->vhost); /* } ---------- */
return wsi;
}
#endif
lwsl_info("applying %p to txn queue on %p (wsistate 0x%x)\n",
wsi, w, w->wsistate);
/*
* ...let's add ourselves to his transaction queue...
* we are adding ourselves at the HEAD
*/
lws_dll_lws_add_front(&wsi->dll_client_transaction_queue,
&w->dll_client_transaction_queue_head);
/*
* h1: pipeline our headers out on him,
* and wait for our turn at client transaction_complete
* to take over parsing the rx.
*/
wsi_piggyback = w;
lws_vhost_unlock(wsi->vhost); /* } ---------- */
goto send_hs;
}
} lws_end_foreach_dll_safe(d, d1);
lws_vhost_unlock(wsi->vhost); /* } ---------------------------------- */
create_new_conn:
#endif
/*
* clients who will create their own fresh connection keep a copy of
* the hostname they originally connected to, in case other connections
* want to use it too
*/
if (!wsi->client_hostname_copy)
wsi->client_hostname_copy =
lws_strdup(lws_hdr_simple_ptr(wsi,
_WSI_TOKEN_CLIENT_PEER_ADDRESS));
/*
* If we made our own connection, and we're doing a method that can take
* a pipeline, we are an "active client connection".
*
* Add ourselves to the vhost list of those so that others can
* piggyback on our transaction queue
*/
if (meth && (!strcmp(meth, "GET") || !strcmp(meth, "POST")) &&
lws_dll_is_null(&wsi->dll_client_transaction_queue) &&
lws_dll_is_null(&wsi->dll_active_client_conns)) {
lws_vhost_lock(wsi->vhost);
/* caution... we will have to unpick this on oom4 path */
lws_dll_lws_add_front(&wsi->dll_active_client_conns,
&wsi->vhost->dll_active_client_conns);
lws_vhost_unlock(wsi->vhost);
}
/*
* unix socket destination?
*/
ads = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS);
#if defined(LWS_WITH_UNIX_SOCK)
if (*ads == '+') {
ads++;
memset(&sau, 0, sizeof(sau));
sau.sun_family = AF_UNIX;
strncpy(sau.sun_path, ads, sizeof(sau.sun_path));
sau.sun_path[sizeof(sau.sun_path) - 1] = '\0';
lwsl_info("%s: Unix skt: %s\n", __func__, ads);
if (sau.sun_path[0] == '@')
sau.sun_path[0] = '\0';
unix_skt = 1;
goto ads_known;
}
#endif
/*
* start off allowing ipv6 on connection if vhost allows it
*/
wsi->ipv6 = LWS_IPV6_ENABLED(wsi->vhost);
#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
/* Decide what it is we need to connect to:
*
* Priority 1: connect to http proxy */
if (wsi->vhost->http.http_proxy_port) {
plen = sprintf((char *)pt->serv_buf,
"CONNECT %s:%u HTTP/1.0\x0d\x0a"
"User-agent: libwebsockets\x0d\x0a",
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS),
wsi->c_port);
if (wsi->vhost->proxy_basic_auth_token[0])
plen += sprintf((char *)pt->serv_buf + plen,
"Proxy-authorization: basic %s\x0d\x0a",
wsi->vhost->proxy_basic_auth_token);
plen += sprintf((char *)pt->serv_buf + plen, "\x0d\x0a");
ads = wsi->vhost->http.http_proxy_address;
port = wsi->vhost->http.http_proxy_port;
#else
if (0) {
#endif
#if defined(LWS_WITH_SOCKS5)
/* Priority 2: Connect to SOCK5 Proxy */
} else if (wsi->vhost->socks_proxy_port) {
socks_generate_msg(wsi, SOCKS_MSG_GREETING, &plen);
lwsl_client("Sending SOCKS Greeting\n");
ads = wsi->vhost->socks_proxy_address;
port = wsi->vhost->socks_proxy_port;
#endif
} else {
/* Priority 3: Connect directly */
ads = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS);
port = wsi->c_port;
}
/*
* prepare the actual connection
* to whatever we decided to connect to
*/
lwsl_info("%s: %p: address %s\n", __func__, wsi, ads);
n = lws_getaddrinfo46(wsi, ads, &result);
#ifdef LWS_WITH_IPV6
if (wsi->ipv6) {
struct sockaddr_in6 *sa6;
if (n || !result) {
/* lws_getaddrinfo46 failed, there is no usable result */
lwsl_notice("%s: lws_getaddrinfo46 failed %d\n",
__func__, n);
cce = "ipv6 lws_getaddrinfo46 failed";
goto oom4;
}
sa6 = ((struct sockaddr_in6 *)result->ai_addr);
memset(&sa46, 0, sizeof(sa46));
sa46.sa6.sin6_family = AF_INET6;
switch (result->ai_family) {
case AF_INET:
if (ipv6only)
break;
/* map IPv4 to IPv6 */
bzero((char *)&sa46.sa6.sin6_addr,
sizeof(sa46.sa6.sin6_addr));
sa46.sa6.sin6_addr.s6_addr[10] = 0xff;
sa46.sa6.sin6_addr.s6_addr[11] = 0xff;
memcpy(&sa46.sa6.sin6_addr.s6_addr[12],
&((struct sockaddr_in *)result->ai_addr)->sin_addr,
sizeof(struct in_addr));
lwsl_notice("uplevelling AF_INET to AF_INET6\n");
break;
case AF_INET6:
memcpy(&sa46.sa6.sin6_addr, &sa6->sin6_addr,
sizeof(struct in6_addr));
sa46.sa6.sin6_scope_id = sa6->sin6_scope_id;
sa46.sa6.sin6_flowinfo = sa6->sin6_flowinfo;
break;
default:
lwsl_err("Unknown address family\n");
freeaddrinfo(result);
cce = "unknown address family";
goto oom4;
}
} else
#endif /* use ipv6 */
/* use ipv4 */
{
void *p = NULL;
if (!n) {
struct addrinfo *res = result;
/* pick the first AF_INET (IPv4) result */
while (!p && res) {
switch (res->ai_family) {
case AF_INET:
p = &((struct sockaddr_in *)res->ai_addr)->sin_addr;
break;
}
res = res->ai_next;
}
#if defined(LWS_FALLBACK_GETHOSTBYNAME)
} else if (n == EAI_SYSTEM) {
struct hostent *host;
lwsl_info("getaddrinfo (ipv4) failed, trying gethostbyname\n");
host = gethostbyname(ads);
if (host) {
p = host->h_addr;
} else {
lwsl_err("gethostbyname failed\n");
cce = "gethostbyname (ipv4) failed";
goto oom4;
}
#endif
} else {
lwsl_err("getaddrinfo failed: %d\n", n);
cce = "getaddrinfo failed";
goto oom4;
}
if (!p) {
if (result)
freeaddrinfo(result);
lwsl_err("Couldn't identify address\n");
cce = "unable to lookup address";
goto oom4;
}
sa46.sa4.sin_family = AF_INET;
sa46.sa4.sin_addr = *((struct in_addr *)p);
bzero(&sa46.sa4.sin_zero, 8);
}
if (result)
freeaddrinfo(result);
#if defined(LWS_WITH_UNIX_SOCK)
ads_known:
#endif
/* now we decided on ipv4 or ipv6, set the port */
if (!lws_socket_is_valid(wsi->desc.sockfd)) {
if (wsi->context->event_loop_ops->check_client_connect_ok &&
wsi->context->event_loop_ops->check_client_connect_ok(wsi)) {
cce = "waiting for event loop watcher to close";
goto oom4;
}
#if defined(LWS_WITH_UNIX_SOCK)
if (unix_skt) {
wsi->unix_skt = 1;
wsi->desc.sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
} else
#endif
{
#ifdef LWS_WITH_IPV6
if (wsi->ipv6)
wsi->desc.sockfd = socket(AF_INET6, SOCK_STREAM, 0);
else
#endif
wsi->desc.sockfd = socket(AF_INET, SOCK_STREAM, 0);
}
if (!lws_socket_is_valid(wsi->desc.sockfd)) {
lwsl_warn("Unable to open socket\n");
cce = "unable to open socket";
goto oom4;
}
if (lws_plat_set_socket_options(wsi->vhost, wsi->desc.sockfd,
#if defined(LWS_WITH_UNIX_SOCK)
unix_skt)) {
#else
0)) {
#endif
lwsl_err("Failed to set wsi socket options\n");
compatible_close(wsi->desc.sockfd);
cce = "set socket opts failed";
goto oom4;
}
lwsi_set_state(wsi, LRS_WAITING_CONNECT);
if (wsi->context->event_loop_ops->accept)
if (wsi->context->event_loop_ops->accept(wsi)) {
compatible_close(wsi->desc.sockfd);
cce = "event loop accept failed";
goto oom4;
}
if (__insert_wsi_socket_into_fds(wsi->context, wsi)) {
compatible_close(wsi->desc.sockfd);
cce = "insert wsi failed";
goto oom4;
}
lws_change_pollfd(wsi, 0, LWS_POLLIN);
/*
* past here, we can't simply free the structs as error
* handling as oom4 does. We have to run the whole close flow.
*/
if (!wsi->protocol)
wsi->protocol = &wsi->vhost->protocols[0];
wsi->protocol->callback(wsi, LWS_CALLBACK_WSI_CREATE,
wsi->user_space, NULL, 0);
lws_set_timeout(wsi, PENDING_TIMEOUT_AWAITING_CONNECT_RESPONSE,
AWAITING_TIMEOUT);
iface = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_IFACE);
if (iface) {
n = lws_socket_bind(wsi->vhost, wsi->desc.sockfd, 0, iface);
if (n < 0) {
cce = "unable to bind socket";
goto failed;
}
}
}
#if defined(LWS_WITH_UNIX_SOCK)
if (unix_skt) {
psa = (const struct sockaddr *)&sau;
n = sizeof(sau);
} else
#endif
{
#ifdef LWS_WITH_IPV6
if (wsi->ipv6) {
sa46.sa6.sin6_port = htons(port);
n = sizeof(struct sockaddr_in6);
psa = (const struct sockaddr *)&sa46;
} else
#endif
{
sa46.sa4.sin_port = htons(port);
n = sizeof(struct sockaddr);
psa = (const struct sockaddr *)&sa46;
}
}
if (connect(wsi->desc.sockfd, (const struct sockaddr *)psa, n) == -1 ||
LWS_ERRNO == LWS_EISCONN) {
if (LWS_ERRNO == LWS_EALREADY ||
LWS_ERRNO == LWS_EINPROGRESS ||
LWS_ERRNO == LWS_EWOULDBLOCK
#ifdef _WIN32
|| LWS_ERRNO == WSAEINVAL
#endif
) {
lwsl_client("nonblocking connect retry (errno = %d)\n",
LWS_ERRNO);
if (lws_plat_check_connection_error(wsi)) {
cce = "socket connect failed";
goto failed;
}
/*
* must do specifically a POLLOUT poll to hear
* about the connect completion
*/
if (lws_change_pollfd(wsi, 0, LWS_POLLOUT)) {
cce = "POLLOUT set failed";
goto failed;
}
return wsi;
}
if (LWS_ERRNO != LWS_EISCONN) {
lwsl_notice("Connect failed errno=%d\n", LWS_ERRNO);
cce = "connect failed";
goto failed;
}
}
lwsl_client("connected\n");
#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
/* we are connected to server, or proxy */
/* http proxy */
if (wsi->vhost->http.http_proxy_port) {
/*
* OK from now on we talk via the proxy, so connect to that
*
* (will overwrite existing pointer,
* leaving old string/frag there but unreferenced)
*/
if (lws_hdr_simple_create(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS,
wsi->vhost->http.http_proxy_address))
goto failed;
wsi->c_port = wsi->vhost->http.http_proxy_port;
n = send(wsi->desc.sockfd, (char *)pt->serv_buf, (int)plen,
MSG_NOSIGNAL);
if (n < 0) {
lwsl_debug("ERROR writing to proxy socket\n");
cce = "proxy write failed";
goto failed;
}
lws_set_timeout(wsi, PENDING_TIMEOUT_AWAITING_PROXY_RESPONSE,
AWAITING_TIMEOUT);
lwsi_set_state(wsi, LRS_WAITING_PROXY_REPLY);
return wsi;
}
#endif
#if defined(LWS_WITH_SOCKS5)
/* socks proxy */
else if (wsi->vhost->socks_proxy_port) {
n = send(wsi->desc.sockfd, (char *)pt->serv_buf, plen,
MSG_NOSIGNAL);
if (n < 0) {
lwsl_debug("ERROR writing socks greeting\n");
cce = "socks write failed";
goto failed;
}
lws_set_timeout(wsi, PENDING_TIMEOUT_AWAITING_SOCKS_GREETING_REPLY,
AWAITING_TIMEOUT);
lwsi_set_state(wsi, LRS_WAITING_SOCKS_GREETING_REPLY);
return wsi;
}
#endif
#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
send_hs:
if (wsi_piggyback &&
!lws_dll_is_null(&wsi->dll_client_transaction_queue)) {
/*
* We are pipelining on an already-established connection...
* we can skip tls establishment.
*/
lwsi_set_state(wsi, LRS_H1C_ISSUE_HANDSHAKE2);
/*
* we can't send our headers directly, because they have to
* be sent when the parent is writeable. The parent will check
* for anybody on his client transaction queue that is in
* LRS_H1C_ISSUE_HANDSHAKE2, and let them write.
*
* If we are trying to do this too early, before the master
* connection has written his own headers, then it will just
* wait in the queue until it's possible to send them.
*/
lws_callback_on_writable(wsi_piggyback);
lwsl_info("%s: wsi %p: waiting to send headers (parent state %x)\n",
__func__, wsi, lwsi_state(wsi_piggyback));
} else {
lwsl_info("%s: wsi %p: client creating own connection\n",
__func__, wsi);
/* we are making our own connection */
lwsi_set_state(wsi, LRS_H1C_ISSUE_HANDSHAKE);
/*
* provoke service to issue the handshake directly.
*
* we need to do it this way because in the proxy case, this is
* the next state and executed only if and when we get a good
* proxy response inside the state machine... but notice in
* SSL case this may not have sent anything yet with 0 return,
* and won't until many retries from main loop. To stop that
* becoming endless, cover with a timeout.
*/
lws_set_timeout(wsi, PENDING_TIMEOUT_SENT_CLIENT_HANDSHAKE,
AWAITING_TIMEOUT);
pfd.fd = wsi->desc.sockfd;
pfd.events = LWS_POLLIN;
pfd.revents = LWS_POLLIN;
n = lws_service_fd(context, &pfd);
if (n < 0) {
cce = "first service failed";
goto failed;
}
if (n) /* returns 1 on failure after closing wsi */
return NULL;
}
#endif
return wsi;
oom4:
if (lwsi_role_client(wsi) /* && lwsi_state_est(wsi) */) {
wsi->protocol->callback(wsi,
LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
wsi->user_space, (void *)cce, strlen(cce));
wsi->already_did_cce = 1;
}
/* take care that we might be inserted in fds already */
if (wsi->position_in_fds_table != LWS_NO_FDS_POS)
goto failed1;
/*
* We can't be an active client connection any more, if we thought
* that was what we were going to be doing. It should be if we are
* failing by oom4 path, we are still called by
* lws_client_connect_via_info() and will be returning NULL to that,
* so nobody else should have had a chance to queue on us.
*/
{
struct lws_vhost *vhost = wsi->vhost;
lws_vhost_lock(vhost);
__lws_free_wsi(wsi);
lws_vhost_unlock(vhost);
}
return NULL;
failed:
wsi->protocol->callback(wsi,
LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
wsi->user_space, (void *)cce, strlen(cce));
wsi->already_did_cce = 1;
failed1:
lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS, "client_connect2");
return NULL;
}
LWS_VISIBLE int
lws_server_socket_service_ssl(struct lws *wsi, lws_sockfd_type accept_fd)
{
struct lws_context *context = wsi->context;
struct lws_vhost *vh;
struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
int n;
char buf[256];
(void)buf;
if (!LWS_SSL_ENABLED(wsi->vhost))
return 0;
switch (lwsi_state(wsi)) {
case LRS_SSL_INIT:
if (wsi->tls.ssl)
lwsl_err("%s: leaking ssl\n", __func__);
if (accept_fd == LWS_SOCK_INVALID)
assert(0);
if (context->simultaneous_ssl_restriction &&
context->simultaneous_ssl >=
context->simultaneous_ssl_restriction) {
lwsl_notice("unable to deal with SSL connection\n");
return 1;
}
if (lws_tls_server_new_nonblocking(wsi, accept_fd)) {
if (accept_fd != LWS_SOCK_INVALID)
compatible_close(accept_fd);
goto fail;
}
if (context->simultaneous_ssl_restriction &&
++context->simultaneous_ssl ==
context->simultaneous_ssl_restriction)
/* that was the last allowed SSL connection */
lws_gate_accepts(context, 0);
#if defined(LWS_WITH_STATS)
context->updated = 1;
#endif
/*
* we are not accepted yet, but we need to enter ourselves
* as a live connection. That way we can retry when more
* pieces come if we're not sorted yet
*/
lwsi_set_state(wsi, LRS_SSL_ACK_PENDING);
lws_pt_lock(pt, __func__);
if (__insert_wsi_socket_into_fds(context, wsi)) {
lwsl_err("%s: failed to insert into fds\n", __func__);
goto fail;
}
lws_pt_unlock(pt);
lws_set_timeout(wsi, PENDING_TIMEOUT_SSL_ACCEPT,
context->timeout_secs);
lwsl_debug("inserted SSL accept into fds, trying SSL_accept\n");
/* fallthru */
case LRS_SSL_ACK_PENDING:
if (lws_change_pollfd(wsi, LWS_POLLOUT, 0)) {
lwsl_err("%s: lws_change_pollfd failed\n", __func__);
goto fail;
}
lws_latency_pre(context, wsi);
if (wsi->vhost->tls.allow_non_ssl_on_ssl_port) {
n = recv(wsi->desc.sockfd, (char *)pt->serv_buf,
context->pt_serv_buf_size, MSG_PEEK);
/*
* optionally allow non-SSL connect on SSL listening socket
* This is disabled by default, if enabled it goes around any
* SSL-level access control (eg, client-side certs) so leave
* it disabled unless you know it's not a problem for you
*/
if (n >= 1 && pt->serv_buf[0] >= ' ') {
/*
* TLS content-type for Handshake is 0x16, and
* for ChangeCipherSpec Record, it's 0x14
*
* A non-ssl session will start with the HTTP
* method in ASCII. If we see it's not a legit
* SSL handshake kill the SSL for this
* connection and try to handle as a HTTP
* connection upgrade directly.
*/
wsi->tls.use_ssl = 0;
lws_tls_server_abort_connection(wsi);
/*
* care... this creates wsi with no ssl
* when ssl is enabled and normally
* mandatory
*/
wsi->tls.ssl = NULL;
if (lws_check_opt(context->options,
LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS))
wsi->tls.redirect_to_https = 1;
lwsl_debug("accepted as non-ssl\n");
goto accepted;
}
if (!n) {
/*
* connection is gone, fail out
*/
lwsl_debug("PEEKed 0\n");
goto fail;
}
if (n < 0 && (LWS_ERRNO == LWS_EAGAIN ||
LWS_ERRNO == LWS_EWOULDBLOCK)) {
/*
* well, we get no way to know ssl or not
* so go around again waiting for something
* to come and give us a hint, or timeout the
* connection.
*/
if (lws_change_pollfd(wsi, 0, LWS_POLLIN)) {
lwsl_info("%s: change_pollfd failed\n",
__func__);
return -1;
}
lwsl_info("SSL_ERROR_WANT_READ\n");
return 0;
}
}
/* normal SSL connection processing path */
#if defined(LWS_WITH_STATS)
/* only set this the first time around */
if (!wsi->accept_start_us)
wsi->accept_start_us = lws_time_in_microseconds();
#endif
errno = 0;
lws_stats_atomic_bump(wsi->context, pt,
LWSSTATS_C_SSL_CONNECTIONS_ACCEPT_SPIN, 1);
n = lws_tls_server_accept(wsi);
lws_latency(context, wsi,
"SSL_accept LRS_SSL_ACK_PENDING\n", n, n == 1);
lwsl_info("SSL_accept says %d\n", n);
switch (n) {
case LWS_SSL_CAPABLE_DONE:
break;
case LWS_SSL_CAPABLE_ERROR:
lws_stats_atomic_bump(wsi->context, pt,
LWSSTATS_C_SSL_CONNECTIONS_FAILED, 1);
lwsl_info("SSL_accept failed socket %u: %d\n",
wsi->desc.sockfd, n);
wsi->socket_is_permanently_unusable = 1;
goto fail;
default: /* MORE_SERVICE */
return 0;
}
lws_stats_atomic_bump(wsi->context, pt,
LWSSTATS_C_SSL_CONNECTIONS_ACCEPTED, 1);
#if defined(LWS_WITH_STATS)
if (wsi->accept_start_us)
lws_stats_atomic_bump(wsi->context, pt,
LWSSTATS_MS_SSL_CONNECTIONS_ACCEPTED_DELAY,
lws_time_in_microseconds() - wsi->accept_start_us);
wsi->accept_start_us = lws_time_in_microseconds();
#endif
accepted:
/* adapt our vhost to match the SNI SSL_CTX that was chosen */
vh = context->vhost_list;
while (vh) {
if (!vh->being_destroyed && wsi->tls.ssl &&
vh->tls.ssl_ctx == lws_tls_ctx_from_wsi(wsi)) {
lwsl_info("setting wsi to vh %s\n", vh->name);
lws_vhost_bind_wsi(vh, wsi);
break;
}
vh = vh->vhost_next;
}
/* OK, we are accepted... give him some time to negotiate */
lws_set_timeout(wsi, PENDING_TIMEOUT_ESTABLISH_WITH_SERVER,
context->timeout_secs);
lwsi_set_state(wsi, LRS_ESTABLISHED);
if (lws_tls_server_conn_alpn(wsi))
goto fail;
lwsl_debug("accepted new SSL conn\n");
break;
default:
break;
}
return 0;
fail:
return 1;
}
LWS_VISIBLE int
lws_context_init_server_ssl(const struct lws_context_creation_info *info,
struct lws_vhost *vhost)
{
struct lws_context *context = vhost->context;
struct lws wsi;
if (!lws_check_opt(info->options,
LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT)) {
vhost->tls.use_ssl = 0;
return 0;
}
/*
* If he is giving a cert filepath, take it as a sign he wants to use
* it on this vhost. User code can leave the cert filepath NULL and
* set the LWS_SERVER_OPTION_CREATE_VHOST_SSL_CTX option itself, in
* which case he's expected to set up the cert himself at
* LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS, which
* provides the vhost SSL_CTX * in the user parameter.
*/
if (info->ssl_cert_filepath)
vhost->options |= LWS_SERVER_OPTION_CREATE_VHOST_SSL_CTX;
if (info->port != CONTEXT_PORT_NO_LISTEN) {
vhost->tls.use_ssl = lws_check_opt(vhost->options,
LWS_SERVER_OPTION_CREATE_VHOST_SSL_CTX);
if (vhost->tls.use_ssl && info->ssl_cipher_list)
lwsl_notice(" SSL ciphers: '%s'\n",
info->ssl_cipher_list);
if (vhost->tls.use_ssl)
lwsl_notice(" Using SSL mode\n");
else
lwsl_notice(" Using non-SSL mode\n");
}
/*
* give him a fake wsi with context + vhost set, so he can use
* lws_get_context() in the callback
*/
memset(&wsi, 0, sizeof(wsi));
wsi.vhost = vhost; /* not a real bound wsi */
wsi.context = context;
/*
* as a server, if we are requiring clients to identify themselves
* then set the backend up for it
*/
if (lws_check_opt(info->options,
LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT))
/* Normally SSL listener rejects non-ssl, optionally allow */
vhost->tls.allow_non_ssl_on_ssl_port = 1;
/*
* give user code a chance to load certs into the server
* allowing it to verify incoming client certs
*/
if (vhost->tls.use_ssl) {
if (lws_tls_server_vhost_backend_init(info, vhost, &wsi))
return -1;
lws_tls_server_client_cert_verify_config(vhost);
if (vhost->protocols[0].callback(&wsi,
LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS,
vhost->tls.ssl_ctx, vhost, 0))
return -1;
}
if (vhost->tls.use_ssl)
lws_context_init_alpn(vhost);
return 0;
}
LWS_VISIBLE int
lws_server_socket_service_ssl(struct lws *wsi, lws_sockfd_type accept_fd)
{
struct lws_context *context = wsi->context;
struct lws_vhost *vh;
struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
int n, m;
#if !defined(USE_WOLFSSL) && !defined(LWS_WITH_MBEDTLS)
BIO *bio;
#endif
char buf[256];
(void)buf;
if (!LWS_SSL_ENABLED(wsi->vhost))
return 0;
switch (wsi->mode) {
case LWSCM_SSL_INIT:
case LWSCM_SSL_INIT_RAW:
if (wsi->ssl)
lwsl_err("%s: leaking ssl\n", __func__);
if (accept_fd == LWS_SOCK_INVALID)
assert(0);
if (context->simultaneous_ssl_restriction &&
context->simultaneous_ssl >= context->simultaneous_ssl_restriction) {
lwsl_notice("unable to deal with SSL connection\n");
return 1;
}
errno = 0;
wsi->ssl = SSL_new(wsi->vhost->ssl_ctx);
if (wsi->ssl == NULL) {
lwsl_err("SSL_new failed: %d (errno %d)\n",
lws_ssl_get_error(wsi, 0), errno);
lws_ssl_elaborate_error();
if (accept_fd != LWS_SOCK_INVALID)
compatible_close(accept_fd);
goto fail;
}
#if defined (LWS_HAVE_SSL_SET_INFO_CALLBACK)
if (wsi->vhost->ssl_info_event_mask)
SSL_set_info_callback(wsi->ssl, lws_ssl_info_callback);
#endif
if (context->simultaneous_ssl_restriction &&
++context->simultaneous_ssl == context->simultaneous_ssl_restriction)
/* that was the last allowed SSL connection */
lws_gate_accepts(context, 0);
#if defined(LWS_WITH_STATS)
context->updated = 1;
#endif
#if !defined(LWS_WITH_MBEDTLS)
SSL_set_ex_data(wsi->ssl,
openssl_websocket_private_data_index, wsi);
#endif
SSL_set_fd(wsi->ssl, accept_fd);
#ifdef USE_WOLFSSL
#ifdef USE_OLD_CYASSL
CyaSSL_set_using_nonblock(wsi->ssl, 1);
#else
wolfSSL_set_using_nonblock(wsi->ssl, 1);
#endif
#else
#if defined(LWS_WITH_MBEDTLS)
lws_plat_set_socket_options(wsi->vhost, accept_fd);
#else
SSL_set_mode(wsi->ssl, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
bio = SSL_get_rbio(wsi->ssl);
if (bio)
BIO_set_nbio(bio, 1); /* nonblocking */
else
lwsl_notice("NULL rbio\n");
bio = SSL_get_wbio(wsi->ssl);
if (bio)
BIO_set_nbio(bio, 1); /* nonblocking */
else
lwsl_notice("NULL rbio\n");
#endif
#endif
/*
* we are not accepted yet, but we need to enter ourselves
* as a live connection. That way we can retry when more
* pieces come if we're not sorted yet
*/
if (wsi->mode == LWSCM_SSL_INIT)
wsi->mode = LWSCM_SSL_ACK_PENDING;
else
wsi->mode = LWSCM_SSL_ACK_PENDING_RAW;
if (insert_wsi_socket_into_fds(context, wsi)) {
lwsl_err("%s: failed to insert into fds\n", __func__);
goto fail;
}
lws_set_timeout(wsi, PENDING_TIMEOUT_SSL_ACCEPT,
context->timeout_secs);
lwsl_debug("inserted SSL accept into fds, trying SSL_accept\n");
/* fallthru */
case LWSCM_SSL_ACK_PENDING:
case LWSCM_SSL_ACK_PENDING_RAW:
if (lws_change_pollfd(wsi, LWS_POLLOUT, 0)) {
lwsl_err("%s: lws_change_pollfd failed\n", __func__);
goto fail;
}
lws_latency_pre(context, wsi);
if (wsi->vhost->allow_non_ssl_on_ssl_port) {
n = recv(wsi->desc.sockfd, (char *)pt->serv_buf,
context->pt_serv_buf_size, MSG_PEEK);
/*
* optionally allow non-SSL connect on SSL listening socket
* This is disabled by default, if enabled it goes around any
* SSL-level access control (eg, client-side certs) so leave
* it disabled unless you know it's not a problem for you
*/
if (n >= 1 && pt->serv_buf[0] >= ' ') {
/*
* TLS content-type for Handshake is 0x16, and
* for ChangeCipherSpec Record, it's 0x14
*
* A non-ssl session will start with the HTTP
* method in ASCII. If we see it's not a legit
* SSL handshake kill the SSL for this
* connection and try to handle as a HTTP
* connection upgrade directly.
*/
wsi->use_ssl = 0;
SSL_shutdown(wsi->ssl);
SSL_free(wsi->ssl);
wsi->ssl = NULL;
if (lws_check_opt(context->options,
LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS))
wsi->redirect_to_https = 1;
goto accepted;
}
if (!n) /*
* connection is gone, or nothing to read
* if it's gone, we will timeout on
* PENDING_TIMEOUT_SSL_ACCEPT
*/
break;
if (n < 0 && (LWS_ERRNO == LWS_EAGAIN ||
LWS_ERRNO == LWS_EWOULDBLOCK)) {
/*
* well, we get no way to know ssl or not
* so go around again waiting for something
* to come and give us a hint, or timeout the
* connection.
*/
m = SSL_ERROR_WANT_READ;
goto go_again;
}
}
/* normal SSL connection processing path */
#if defined(LWS_WITH_STATS)
if (!wsi->accept_start_us)
wsi->accept_start_us = time_in_microseconds();
#endif
errno = 0;
lws_stats_atomic_bump(wsi->context, pt,
LWSSTATS_C_SSL_CONNECTIONS_ACCEPT_SPIN, 1);
n = SSL_accept(wsi->ssl);
lws_latency(context, wsi,
"SSL_accept LWSCM_SSL_ACK_PENDING\n", n, n == 1);
lwsl_info("SSL_accept says %d\n", n);
if (n == 1)
goto accepted;
m = lws_ssl_get_error(wsi, n);
#if defined(LWS_WITH_MBEDTLS)
if (m == SSL_ERROR_SYSCALL && errno == 11)
m = SSL_ERROR_WANT_READ;
#endif
if (m == SSL_ERROR_SYSCALL || m == SSL_ERROR_SSL)
goto failed;
go_again:
if (m == SSL_ERROR_WANT_READ || SSL_want_read(wsi->ssl)) {
if (lws_change_pollfd(wsi, 0, LWS_POLLIN)) {
lwsl_info("%s: WANT_READ change_pollfd failed\n", __func__);
goto fail;
}
lwsl_info("SSL_ERROR_WANT_READ\n");
break;
}
if (m == SSL_ERROR_WANT_WRITE || SSL_want_write(wsi->ssl)) {
lwsl_debug("%s: WANT_WRITE\n", __func__);
if (lws_change_pollfd(wsi, 0, LWS_POLLOUT)) {
lwsl_info("%s: WANT_WRITE change_pollfd failed\n", __func__);
goto fail;
}
break;
}
failed:
lws_stats_atomic_bump(wsi->context, pt,
LWSSTATS_C_SSL_CONNECTIONS_FAILED, 1);
wsi->socket_is_permanently_unusable = 1;
lwsl_info("SSL_accept failed socket %u: %s\n", wsi->desc.sockfd,
lws_ssl_get_error_string(m, n, buf, sizeof(buf)));
lws_ssl_elaborate_error();
goto fail;
accepted:
lws_stats_atomic_bump(wsi->context, pt,
LWSSTATS_C_SSL_CONNECTIONS_ACCEPTED, 1);
#if defined(LWS_WITH_STATS)
lws_stats_atomic_bump(wsi->context, pt,
LWSSTATS_MS_SSL_CONNECTIONS_ACCEPTED_DELAY,
time_in_microseconds() - wsi->accept_start_us);
wsi->accept_start_us = time_in_microseconds();
#endif
/* adapt our vhost to match the SNI SSL_CTX that was chosen */
vh = context->vhost_list;
while (vh) {
if (!vh->being_destroyed && wsi->ssl &&
vh->ssl_ctx == SSL_get_SSL_CTX(wsi->ssl)) {
lwsl_info("setting wsi to vh %s\n", vh->name);
wsi->vhost = vh;
break;
}
vh = vh->vhost_next;
}
/* OK, we are accepted... give him some time to negotiate */
lws_set_timeout(wsi, PENDING_TIMEOUT_ESTABLISH_WITH_SERVER,
context->timeout_secs);
if (wsi->mode == LWSCM_SSL_ACK_PENDING_RAW)
wsi->mode = LWSCM_RAW;
else
wsi->mode = LWSCM_HTTP_SERVING;
#if defined(LWS_WITH_HTTP2)
if (lws_h2_configure_if_upgraded(wsi))
goto fail;
#endif
lwsl_debug("accepted new SSL conn\n");
break;
}
return 0;
fail:
return 1;
}
int lws_context_init_client_ssl(struct lws_context_creation_info *info,
struct lws_vhost *vhost)
{
#if defined(LWS_USE_POLARSSL)
return 0;
#else
#if defined(LWS_USE_MBEDTLS)
#else
SSL_METHOD *method;
struct lws wsi;
int error;
int n;
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT))
return 0;
if (info->provided_client_ssl_ctx) {
/* use the provided OpenSSL context if given one */
vhost->ssl_client_ctx = info->provided_client_ssl_ctx;
/* nothing for lib to delete */
vhost->user_supplied_ssl_ctx = 1;
return 0;
}
if (info->port != CONTEXT_PORT_NO_LISTEN)
return 0;
/* basic openssl init already happened in context init */
method = (SSL_METHOD *)SSLv23_client_method();
if (!method) {
error = ERR_get_error();
lwsl_err("problem creating ssl method %lu: %s\n",
error, ERR_error_string(error,
(char *)vhost->context->pt[0].serv_buf));
return 1;
}
/* create context */
vhost->ssl_client_ctx = SSL_CTX_new(method);
if (!vhost->ssl_client_ctx) {
error = ERR_get_error();
lwsl_err("problem creating ssl context %lu: %s\n",
error, ERR_error_string(error,
(char *)vhost->context->pt[0].serv_buf));
return 1;
}
#ifdef SSL_OP_NO_COMPRESSION
SSL_CTX_set_options(vhost->ssl_client_ctx, SSL_OP_NO_COMPRESSION);
#endif
SSL_CTX_set_options(vhost->ssl_client_ctx,
SSL_OP_CIPHER_SERVER_PREFERENCE);
if (info->ssl_cipher_list)
SSL_CTX_set_cipher_list(vhost->ssl_client_ctx,
info->ssl_cipher_list);
#ifdef LWS_SSL_CLIENT_USE_OS_CA_CERTS
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_DISABLE_OS_CA_CERTS))
/* loads OS default CA certs */
SSL_CTX_set_default_verify_paths(vhost->ssl_client_ctx);
#endif
/* openssl init for cert verification (for client sockets) */
if (!info->ssl_ca_filepath) {
if (!SSL_CTX_load_verify_locations(
vhost->ssl_client_ctx, NULL,
LWS_OPENSSL_CLIENT_CERTS))
lwsl_err(
"Unable to load SSL Client certs from %s "
"(set by --with-client-cert-dir= "
"in configure) -- client ssl isn't "
"going to work", LWS_OPENSSL_CLIENT_CERTS);
} else
if (!SSL_CTX_load_verify_locations(
vhost->ssl_client_ctx, info->ssl_ca_filepath,
NULL))
lwsl_err(
"Unable to load SSL Client certs "
"file from %s -- client ssl isn't "
"going to work", info->ssl_ca_filepath);
else
lwsl_info("loaded ssl_ca_filepath\n");
/*
* callback allowing user code to load extra verification certs
* helping the client to verify server identity
*/
/* support for client-side certificate authentication */
if (info->ssl_cert_filepath) {
n = SSL_CTX_use_certificate_chain_file(vhost->ssl_client_ctx,
info->ssl_cert_filepath);
if (n != 1) {
lwsl_err("problem getting cert '%s' %lu: %s\n",
info->ssl_cert_filepath,
ERR_get_error(),
ERR_error_string(ERR_get_error(),
(char *)vhost->context->pt[0].serv_buf));
return 1;
}
}
if (info->ssl_private_key_filepath) {
lws_ssl_bind_passphrase(vhost->ssl_client_ctx, info);
/* set the private key from KeyFile */
if (SSL_CTX_use_PrivateKey_file(vhost->ssl_client_ctx,
info->ssl_private_key_filepath, SSL_FILETYPE_PEM) != 1) {
lwsl_err("use_PrivateKey_file '%s' %lu: %s\n",
info->ssl_private_key_filepath,
ERR_get_error(),
ERR_error_string(ERR_get_error(),
(char *)vhost->context->pt[0].serv_buf));
return 1;
}
/* verify private key */
if (!SSL_CTX_check_private_key(vhost->ssl_client_ctx)) {
lwsl_err("Private SSL key doesn't match cert\n");
return 1;
}
}
/*
* 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->ssl_client_ctx, NULL, 0);
return 0;
#endif
#endif
}
char *
lws_generate_client_handshake(struct lws *wsi, char *pkt)
{
char buf[128], hash[20], key_b64[40], *p = pkt;
struct lws_context *context = wsi->context;
const char *meth;
int n;
#ifndef LWS_NO_EXTENSIONS
const struct lws_extension *ext;
int ext_count = 0;
#endif
const char *pp = lws_hdr_simple_ptr(wsi,
_WSI_TOKEN_CLIENT_SENT_PROTOCOLS);
meth = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_METHOD);
if (!meth) {
meth = "GET";
wsi->do_ws = 1;
} else {
wsi->do_ws = 0;
}
if (!strcmp(meth, "RAW")) {
lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0);
lwsl_notice("client transition to raw\n");
if (pp) {
const struct lws_protocols *pr;
pr = lws_vhost_name_to_protocol(wsi->vhost, pp);
if (!pr) {
lwsl_err("protocol %s not enabled on vhost\n",
pp);
return NULL;
}
lws_bind_protocol(wsi, pr);
}
if ((wsi->protocol->callback)(wsi,
LWS_CALLBACK_RAW_ADOPT,
wsi->user_space, NULL, 0))
return NULL;
lws_header_table_force_to_detachable_state(wsi);
lws_union_transition(wsi, LWSCM_RAW);
lws_header_table_detach(wsi, 1);
return NULL;
}
if (wsi->do_ws) {
/*
* create the random key
*/
n = lws_get_random(context, hash, 16);
if (n != 16) {
lwsl_err("Unable to read from random dev %s\n",
SYSTEM_RANDOM_FILEPATH);
lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
return NULL;
}
lws_b64_encode_string(hash, 16, key_b64, sizeof(key_b64));
}
/*
* 04 example client handshake
*
* GET /chat HTTP/1.1
* Host: server.example.com
* Upgrade: websocket
* Connection: Upgrade
* Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
* Sec-WebSocket-Origin: http://example.com
* Sec-WebSocket-Protocol: chat, superchat
* Sec-WebSocket-Version: 4
*/
p += sprintf(p, "%s %s HTTP/1.1\x0d\x0a", meth,
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_URI));
p += sprintf(p, "Pragma: no-cache\x0d\x0a"
"Cache-Control: no-cache\x0d\x0a");
p += sprintf(p, "Host: %s\x0d\x0a",
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_HOST));
if (lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_ORIGIN)) {
if (lws_check_opt(context->options, LWS_SERVER_OPTION_JUST_USE_RAW_ORIGIN))
p += sprintf(p, "Origin: %s\x0d\x0a",
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_ORIGIN));
else
p += sprintf(p, "Origin: http://%s\x0d\x0a",
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_ORIGIN));
}
if (wsi->do_ws) {
p += sprintf(p, "Upgrade: websocket\x0d\x0a"
"Connection: Upgrade\x0d\x0a"
"Sec-WebSocket-Key: ");
strcpy(p, key_b64);
p += strlen(key_b64);
p += sprintf(p, "\x0d\x0a");
if (lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_SENT_PROTOCOLS))
p += sprintf(p, "Sec-WebSocket-Protocol: %s\x0d\x0a",
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_SENT_PROTOCOLS));
/* tell the server what extensions we could support */
#ifndef LWS_NO_EXTENSIONS
ext = wsi->vhost->extensions;
while (ext && ext->callback) {
n = lws_ext_cb_all_exts(context, wsi,
LWS_EXT_CB_CHECK_OK_TO_PROPOSE_EXTENSION,
(char *)ext->name, 0);
if (n) { /* an extension vetos us */
lwsl_ext("ext %s vetoed\n", (char *)ext->name);
ext++;
continue;
}
n = wsi->vhost->protocols[0].callback(wsi,
LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED,
wsi->user_space, (char *)ext->name, 0);
/*
* zero return from callback means
* go ahead and allow the extension,
* it's what we get if the callback is
* unhandled
*/
if (n) {
ext++;
continue;
}
/* apply it */
if (ext_count)
*p++ = ',';
else
p += sprintf(p, "Sec-WebSocket-Extensions: ");
p += sprintf(p, "%s", ext->client_offer);
ext_count++;
ext++;
}
if (ext_count)
p += sprintf(p, "\x0d\x0a");
#endif
if (wsi->ietf_spec_revision)
p += sprintf(p, "Sec-WebSocket-Version: %d\x0d\x0a",
wsi->ietf_spec_revision);
/* prepare the expected server accept response */
key_b64[39] = '\0'; /* enforce composed length below buf sizeof */
n = sprintf(buf, "%s258EAFA5-E914-47DA-95CA-C5AB0DC85B11", key_b64);
lws_SHA1((unsigned char *)buf, n, (unsigned char *)hash);
lws_b64_encode_string(hash, 20,
wsi->u.hdr.ah->initial_handshake_hash_base64,
sizeof(wsi->u.hdr.ah->initial_handshake_hash_base64));
}
/* give userland a chance to append, eg, cookies */
wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER,
wsi->user_space, &p, (pkt + context->pt_serv_buf_size) - p - 12);
p += sprintf(p, "\x0d\x0a");
return p;
}
LWS_VISIBLE int
lws_context_init_server_ssl(struct lws_context_creation_info *info,
struct lws_vhost *vhost)
{
struct lws_context *context = vhost->context;
struct lws wsi;
unsigned long error;
int n;
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT)) {
vhost->use_ssl = 0;
return 0;
}
/*
* If he is giving a cert filepath, take it as a sign he wants to use
* it on this vhost. User code can leave the cert filepath NULL and
* set the LWS_SERVER_OPTION_CREATE_VHOST_SSL_CTX option itself, in
* which case he's expected to set up the cert himself at
* LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS, which
* provides the vhost SSL_CTX * in the user parameter.
*/
if (info->ssl_cert_filepath)
info->options |= LWS_SERVER_OPTION_CREATE_VHOST_SSL_CTX;
if (info->port != CONTEXT_PORT_NO_LISTEN) {
vhost->use_ssl = lws_check_opt(info->options,
LWS_SERVER_OPTION_CREATE_VHOST_SSL_CTX);
if (vhost->use_ssl && info->ssl_cipher_list)
lwsl_notice(" SSL ciphers: '%s'\n", info->ssl_cipher_list);
if (vhost->use_ssl)
lwsl_notice(" Using SSL mode\n");
else
lwsl_notice(" Using non-SSL mode\n");
}
/*
* give him a fake wsi with context + vhost set, so he can use
* lws_get_context() in the callback
*/
memset(&wsi, 0, sizeof(wsi));
wsi.vhost = vhost;
wsi.context = context;
(void)n;
(void)error;
/*
* Firefox insists on SSLv23 not SSLv3
* Konq disables SSLv2 by default now, SSLv23 works
*
* SSLv23_server_method() is the openssl method for "allow all TLS
* versions", compared to e.g. TLSv1_2_server_method() which only allows
* tlsv1.2. Unwanted versions must be disabled using SSL_CTX_set_options()
*/
#if !defined(LWS_WITH_MBEDTLS)
{
SSL_METHOD *method;
method = (SSL_METHOD *)SSLv23_server_method();
if (!method) {
error = ERR_get_error();
lwsl_err("problem creating ssl method %lu: %s\n",
error, ERR_error_string(error,
(char *)context->pt[0].serv_buf));
return 1;
}
vhost->ssl_ctx = SSL_CTX_new(method); /* create context */
if (!vhost->ssl_ctx) {
error = ERR_get_error();
lwsl_err("problem creating ssl context %lu: %s\n",
error, ERR_error_string(error,
(char *)context->pt[0].serv_buf));
return 1;
}
}
#else
{
const SSL_METHOD *method = TLSv1_2_server_method();
vhost->ssl_ctx = SSL_CTX_new(method); /* create context */
if (!vhost->ssl_ctx) {
lwsl_err("problem creating ssl context\n");
return 1;
}
}
#endif
#if !defined(LWS_WITH_MBEDTLS)
/* associate the lws context with the SSL_CTX */
SSL_CTX_set_ex_data(vhost->ssl_ctx,
openssl_SSL_CTX_private_data_index, (char *)vhost->context);
/* Disable SSLv2 and SSLv3 */
SSL_CTX_set_options(vhost->ssl_ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
#ifdef SSL_OP_NO_COMPRESSION
SSL_CTX_set_options(vhost->ssl_ctx, SSL_OP_NO_COMPRESSION);
#endif
SSL_CTX_set_options(vhost->ssl_ctx, SSL_OP_SINGLE_DH_USE);
SSL_CTX_set_options(vhost->ssl_ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
if (info->ssl_cipher_list)
SSL_CTX_set_cipher_list(vhost->ssl_ctx,
info->ssl_cipher_list);
#endif
/* as a server, are we requiring clients to identify themselves? */
if (lws_check_opt(info->options,
LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT)) {
int verify_options = SSL_VERIFY_PEER;
if (!lws_check_opt(info->options,
LWS_SERVER_OPTION_PEER_CERT_NOT_REQUIRED))
verify_options |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
#if !defined(LWS_WITH_MBEDTLS)
SSL_CTX_set_session_id_context(vhost->ssl_ctx,
(unsigned char *)context, sizeof(void *));
/* absolutely require the client cert */
SSL_CTX_set_verify(vhost->ssl_ctx,
verify_options, OpenSSL_verify_callback);
#endif
}
#if !defined(LWS_WITH_MBEDTLS) && !defined(OPENSSL_NO_TLSEXT)
SSL_CTX_set_tlsext_servername_callback(vhost->ssl_ctx,
lws_ssl_server_name_cb);
SSL_CTX_set_tlsext_servername_arg(vhost->ssl_ctx, context);
#endif
/*
* give user code a chance to load certs into the server
* allowing it to verify incoming client certs
*/
#if !defined(LWS_WITH_MBEDTLS)
if (info->ssl_ca_filepath &&
!SSL_CTX_load_verify_locations(vhost->ssl_ctx,
info->ssl_ca_filepath, NULL)) {
lwsl_err("%s: SSL_CTX_load_verify_locations unhappy\n", __func__);
}
#endif
if (vhost->use_ssl) {
if (lws_context_ssl_init_ecdh_curve(info, vhost))
return -1;
vhost->protocols[0].callback(&wsi,
LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS,
vhost->ssl_ctx, NULL, 0);
}
if (lws_check_opt(info->options, LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT))
/* Normally SSL listener rejects non-ssl, optionally allow */
vhost->allow_non_ssl_on_ssl_port = 1;
if (info->ssl_options_set)
SSL_CTX_set_options(vhost->ssl_ctx, info->ssl_options_set);
/* SSL_clear_options introduced in 0.9.8m */
#if !defined(LWS_WITH_MBEDTLS)
#if (OPENSSL_VERSION_NUMBER >= 0x009080df) && !defined(USE_WOLFSSL)
if (info->ssl_options_clear)
SSL_CTX_clear_options(vhost->ssl_ctx, info->ssl_options_clear);
#endif
#endif
lwsl_info(" SSL options 0x%lX\n", SSL_CTX_get_options(vhost->ssl_ctx));
if (vhost->use_ssl && info->ssl_cert_filepath) {
/*
* The user code can choose to either pass the cert and
* key filepaths using the info members like this, or it can
* leave them NULL; force the vhost SSL_CTX init using the info
* options flag LWS_SERVER_OPTION_CREATE_VHOST_SSL_CTX; and
* set up the cert himself using the user callback
* LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS, which
* happened just above and has the vhost SSL_CTX * in the user
* parameter.
*/
#if !defined(LWS_WITH_MBEDTLS)
/* set the local certificate from CertFile */
n = SSL_CTX_use_certificate_chain_file(vhost->ssl_ctx,
info->ssl_cert_filepath);
if (n != 1) {
error = ERR_get_error();
lwsl_err("problem getting cert '%s' %lu: %s\n",
info->ssl_cert_filepath,
error,
ERR_error_string(error,
(char *)context->pt[0].serv_buf));
return 1;
}
lws_ssl_bind_passphrase(vhost->ssl_ctx, info);
#else
uint8_t *p;
lws_filepos_t flen;
int err;
if (alloc_pem_to_der_file(vhost->context, info->ssl_cert_filepath, &p,
&flen)) {
lwsl_err("couldn't find cert file %s\n",
info->ssl_cert_filepath);
return 1;
}
err = SSL_CTX_use_certificate_ASN1(vhost->ssl_ctx, flen, p);
if (!err) {
lwsl_err("Problem loading cert\n");
return 1;
}
#if !defined(LWS_WITH_ESP32)
free(p);
p = NULL;
#endif
if (info->ssl_private_key_filepath) {
if (alloc_pem_to_der_file(vhost->context,
info->ssl_private_key_filepath, &p, &flen)) {
lwsl_err("couldn't find cert file %s\n",
info->ssl_cert_filepath);
return 1;
}
err = SSL_CTX_use_PrivateKey_ASN1(0, vhost->ssl_ctx, p, flen);
if (!err) {
lwsl_err("Problem loading key\n");
return 1;
}
}
#if !defined(LWS_WITH_ESP32)
free(p);
p = NULL;
#endif
#endif
if (info->ssl_private_key_filepath != NULL) {
#if !defined(LWS_WITH_MBEDTLS)
/* set the private key from KeyFile */
if (SSL_CTX_use_PrivateKey_file(vhost->ssl_ctx,
info->ssl_private_key_filepath,
SSL_FILETYPE_PEM) != 1) {
error = ERR_get_error();
lwsl_err("ssl problem getting key '%s' %lu: %s\n",
info->ssl_private_key_filepath, error,
ERR_error_string(error,
(char *)context->pt[0].serv_buf));
return 1;
}
#endif
} else
if (vhost->protocols[0].callback(&wsi,
LWS_CALLBACK_OPENSSL_CONTEXT_REQUIRES_PRIVATE_KEY,
vhost->ssl_ctx, NULL, 0)) {
lwsl_err("ssl private key not set\n");
return 1;
}
#if !defined(LWS_WITH_MBEDTLS)
/* verify private key */
if (!SSL_CTX_check_private_key(vhost->ssl_ctx)) {
lwsl_err("Private SSL key doesn't match cert\n");
return 1;
}
#endif
}
if (vhost->use_ssl) {
if (lws_context_ssl_init_ecdh(vhost))
return 1;
/*
* SSL is happy and has a cert it's content with
* If we're supporting HTTP2, initialize that
*/
lws_context_init_http2_ssl(vhost);
}
return 0;
}
struct lws *
lws_client_connect_2(struct lws *wsi)
{
sockaddr46 sa46;
struct addrinfo *result;
struct lws_context *context = wsi->context;
struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
struct lws_pollfd pfd;
const char *cce = "", *iface;
int n, port;
ssize_t plen = 0;
const char *ads;
#ifdef LWS_USE_IPV6
char ipv6only = lws_check_opt(wsi->vhost->options,
LWS_SERVER_OPTION_IPV6_V6ONLY_MODIFY |
LWS_SERVER_OPTION_IPV6_V6ONLY_VALUE);
#if defined(__ANDROID__)
ipv6only = 0;
#endif
#endif
lwsl_client("%s\n", __func__);
if (!wsi->u.hdr.ah) {
cce = "ah was NULL at cc2";
lwsl_err("%s\n", cce);
goto oom4;
}
/*
* start off allowing ipv6 on connection if vhost allows it
*/
wsi->ipv6 = LWS_IPV6_ENABLED(wsi->vhost);
/* Decide what it is we need to connect to:
*
* Priority 1: connect to http proxy */
if (wsi->vhost->http_proxy_port) {
plen = sprintf((char *)pt->serv_buf,
"CONNECT %s:%u HTTP/1.0\x0d\x0a"
"User-agent: libwebsockets\x0d\x0a",
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS),
wsi->c_port);
if (wsi->vhost->proxy_basic_auth_token[0])
plen += sprintf((char *)pt->serv_buf + plen,
"Proxy-authorization: basic %s\x0d\x0a",
wsi->vhost->proxy_basic_auth_token);
plen += sprintf((char *)pt->serv_buf + plen, "\x0d\x0a");
ads = wsi->vhost->http_proxy_address;
port = wsi->vhost->http_proxy_port;
#if defined(LWS_WITH_SOCKS5)
/* Priority 2: Connect to SOCK5 Proxy */
} else if (wsi->vhost->socks_proxy_port) {
socks_generate_msg(wsi, SOCKS_MSG_GREETING, &plen);
lwsl_client("Sending SOCKS Greeting\n");
ads = wsi->vhost->socks_proxy_address;
port = wsi->vhost->socks_proxy_port;
#endif
} else {
/* Priority 3: Connect directly */
ads = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS);
port = wsi->c_port;
}
/*
* prepare the actual connection
* to whatever we decided to connect to
*/
lwsl_notice("%s: %p: address %s\n", __func__, wsi, ads);
n = lws_getaddrinfo46(wsi, ads, &result);
#ifdef LWS_USE_IPV6
if (wsi->ipv6) {
if (n) {
/* lws_getaddrinfo46 failed, there is no usable result */
lwsl_notice("%s: lws_getaddrinfo46 failed %d\n",
__func__, n);
cce = "ipv6 lws_getaddrinfo46 failed";
goto oom4;
}
memset(&sa46, 0, sizeof(sa46));
sa46.sa6.sin6_family = AF_INET6;
switch (result->ai_family) {
case AF_INET:
if (ipv6only)
break;
/* map IPv4 to IPv6 */
bzero((char *)&sa46.sa6.sin6_addr,
sizeof(sa46.sa6.sin6_addr));
sa46.sa6.sin6_addr.s6_addr[10] = 0xff;
sa46.sa6.sin6_addr.s6_addr[11] = 0xff;
memcpy(&sa46.sa6.sin6_addr.s6_addr[12],
&((struct sockaddr_in *)result->ai_addr)->sin_addr,
sizeof(struct in_addr));
lwsl_notice("uplevelling AF_INET to AF_INET6\n");
break;
case AF_INET6:
memcpy(&sa46.sa6.sin6_addr,
&((struct sockaddr_in6 *)result->ai_addr)->sin6_addr,
sizeof(struct in6_addr));
sa46.sa6.sin6_scope_id = ((struct sockaddr_in6 *)result->ai_addr)->sin6_scope_id;
sa46.sa6.sin6_flowinfo = ((struct sockaddr_in6 *)result->ai_addr)->sin6_flowinfo;
break;
default:
lwsl_err("Unknown address family\n");
freeaddrinfo(result);
cce = "unknown address family";
goto oom4;
}
} else
#endif /* use ipv6 */
/* use ipv4 */
{
void *p = NULL;
if (!n) {
struct addrinfo *res = result;
/* pick the first AF_INET (IPv4) result */
while (!p && res) {
switch (res->ai_family) {
case AF_INET:
p = &((struct sockaddr_in *)res->ai_addr)->sin_addr;
break;
}
res = res->ai_next;
}
#if defined(LWS_FALLBACK_GETHOSTBYNAME)
} else if (n == EAI_SYSTEM) {
struct hostent *host;
lwsl_info("getaddrinfo (ipv4) failed, trying gethostbyname\n");
host = gethostbyname(ads);
if (host) {
p = host->h_addr;
} else {
lwsl_err("gethostbyname failed\n");
cce = "gethostbyname (ipv4) failed";
goto oom4;
}
#endif
} else {
lwsl_err("getaddrinfo failed\n");
cce = "getaddrinfo failed";
goto oom4;
}
if (!p) {
if (result)
freeaddrinfo(result);
lwsl_err("Couldn't identify address\n");
cce = "unable to lookup address";
goto oom4;
}
sa46.sa4.sin_family = AF_INET;
sa46.sa4.sin_addr = *((struct in_addr *)p);
bzero(&sa46.sa4.sin_zero, 8);
}
if (result)
freeaddrinfo(result);
/* now we decided on ipv4 or ipv6, set the port */
if (!lws_socket_is_valid(wsi->desc.sockfd)) {
#if defined(LWS_USE_LIBUV)
if (LWS_LIBUV_ENABLED(context))
if (lws_libuv_check_watcher_active(wsi)) {
lwsl_warn("Waiting for libuv watcher to close\n");
cce = "waiting for libuv watcher to close";
goto oom4;
}
#endif
#ifdef LWS_USE_IPV6
if (wsi->ipv6)
wsi->desc.sockfd = socket(AF_INET6, SOCK_STREAM, 0);
else
#endif
wsi->desc.sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (!lws_socket_is_valid(wsi->desc.sockfd)) {
lwsl_warn("Unable to open socket\n");
cce = "unable to open socket";
goto oom4;
}
if (lws_plat_set_socket_options(wsi->vhost, wsi->desc.sockfd)) {
lwsl_err("Failed to set wsi socket options\n");
compatible_close(wsi->desc.sockfd);
cce = "set socket opts failed";
goto oom4;
}
wsi->mode = LWSCM_WSCL_WAITING_CONNECT;
lws_libev_accept(wsi, wsi->desc);
lws_libuv_accept(wsi, wsi->desc);
lws_libevent_accept(wsi, wsi->desc);
if (insert_wsi_socket_into_fds(context, wsi)) {
compatible_close(wsi->desc.sockfd);
cce = "insert wsi failed";
goto oom4;
}
lws_change_pollfd(wsi, 0, LWS_POLLIN);
/*
* past here, we can't simply free the structs as error
* handling as oom4 does. We have to run the whole close flow.
*/
if (!wsi->protocol)
wsi->protocol = &wsi->vhost->protocols[0];
wsi->protocol->callback(wsi, LWS_CALLBACK_WSI_CREATE,
wsi->user_space, NULL, 0);
lws_set_timeout(wsi, PENDING_TIMEOUT_AWAITING_CONNECT_RESPONSE,
AWAITING_TIMEOUT);
iface = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_IFACE);
if (iface) {
n = lws_socket_bind(wsi->vhost, wsi->desc.sockfd, 0, iface);
if (n < 0) {
cce = "unable to bind socket";
goto failed;
}
}
}
#ifdef LWS_USE_IPV6
if (wsi->ipv6) {
sa46.sa6.sin6_port = htons(port);
n = sizeof(struct sockaddr_in6);
} else
#endif
{
sa46.sa4.sin_port = htons(port);
n = sizeof(struct sockaddr);
}
if (connect(wsi->desc.sockfd, (const struct sockaddr *)&sa46, n) == -1 ||
LWS_ERRNO == LWS_EISCONN) {
if (LWS_ERRNO == LWS_EALREADY ||
LWS_ERRNO == LWS_EINPROGRESS ||
LWS_ERRNO == LWS_EWOULDBLOCK
#ifdef _WIN32
|| LWS_ERRNO == WSAEINVAL
#endif
) {
lwsl_client("nonblocking connect retry (errno = %d)\n",
LWS_ERRNO);
if (lws_plat_check_connection_error(wsi)) {
cce = "socket connect failed";
goto failed;
}
/*
* must do specifically a POLLOUT poll to hear
* about the connect completion
*/
if (lws_change_pollfd(wsi, 0, LWS_POLLOUT)) {
cce = "POLLOUT set failed";
goto failed;
}
return wsi;
}
if (LWS_ERRNO != LWS_EISCONN) {
lwsl_notice("Connect failed errno=%d\n", LWS_ERRNO);
cce = "connect failed";
goto failed;
}
}
lwsl_client("connected\n");
/* we are connected to server, or proxy */
/* http proxy */
if (wsi->vhost->http_proxy_port) {
/*
* OK from now on we talk via the proxy, so connect to that
*
* (will overwrite existing pointer,
* leaving old string/frag there but unreferenced)
*/
if (lws_hdr_simple_create(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS,
wsi->vhost->http_proxy_address))
goto failed;
wsi->c_port = wsi->vhost->http_proxy_port;
n = send(wsi->desc.sockfd, (char *)pt->serv_buf, plen,
MSG_NOSIGNAL);
if (n < 0) {
lwsl_debug("ERROR writing to proxy socket\n");
cce = "proxy write failed";
goto failed;
}
lws_set_timeout(wsi, PENDING_TIMEOUT_AWAITING_PROXY_RESPONSE,
AWAITING_TIMEOUT);
wsi->mode = LWSCM_WSCL_WAITING_PROXY_REPLY;
return wsi;
}
#if defined(LWS_WITH_SOCKS5)
/* socks proxy */
else if (wsi->vhost->socks_proxy_port) {
n = send(wsi->desc.sockfd, (char *)pt->serv_buf, plen,
MSG_NOSIGNAL);
if (n < 0) {
lwsl_debug("ERROR writing socks greeting\n");
cce = "socks write failed";
goto failed;
}
lws_set_timeout(wsi, PENDING_TIMEOUT_AWAITING_SOCKS_GREETING_REPLY,
AWAITING_TIMEOUT);
wsi->mode = LWSCM_WSCL_WAITING_SOCKS_GREETING_REPLY;
return wsi;
}
#endif
/*
* provoke service to issue the handshake directly
* we need to do it this way because in the proxy case, this is the
* next state and executed only if and when we get a good proxy
* response inside the state machine... but notice in SSL case this
* may not have sent anything yet with 0 return, and won't until some
* many retries from main loop. To stop that becoming endless,
* cover with a timeout.
*/
lws_set_timeout(wsi, PENDING_TIMEOUT_SENT_CLIENT_HANDSHAKE,
AWAITING_TIMEOUT);
wsi->mode = LWSCM_WSCL_ISSUE_HANDSHAKE;
pfd.fd = wsi->desc.sockfd;
pfd.events = LWS_POLLIN;
pfd.revents = LWS_POLLIN;
n = lws_service_fd(context, &pfd);
if (n < 0) {
cce = "first service failed";
goto failed;
}
if (n) /* returns 1 on failure after closing wsi */
return NULL;
return wsi;
oom4:
/* we're closing, losing some rx is OK */
lws_header_table_force_to_detachable_state(wsi);
if (wsi->mode == LWSCM_HTTP_CLIENT ||
wsi->mode == LWSCM_HTTP_CLIENT_ACCEPTED ||
wsi->mode == LWSCM_WSCL_WAITING_CONNECT) {
wsi->vhost->protocols[0].callback(wsi,
LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
wsi->user_space, (void *)cce, strlen(cce));
wsi->already_did_cce = 1;
}
/* take care that we might be inserted in fds already */
if (wsi->position_in_fds_table != -1)
goto failed1;
lws_remove_from_timeout_list(wsi);
lws_header_table_detach(wsi, 0);
lws_free(wsi);
return NULL;
failed:
wsi->vhost->protocols[0].callback(wsi,
LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
wsi->user_space, (void *)cce, strlen(cce));
wsi->already_did_cce = 1;
failed1:
lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
return NULL;
}
int
lws_context_init_server(struct lws_context_creation_info *info,
struct lws_vhost *vhost)
{
#ifdef LWS_POSIX
int n, opt = 1, limit = 1;
#endif
lws_sockfd_type sockfd;
struct lws_vhost *vh;
struct lws *wsi;
int m = 0;
/* set up our external listening socket we serve on */
if (info->port == CONTEXT_PORT_NO_LISTEN)
return 0;
vh = vhost->context->vhost_list;
while (vh) {
if (vh->listen_port == info->port) {
if ((!info->iface && !vh->iface) ||
(info->iface && vh->iface &&
!strcmp(info->iface, vh->iface))) {
vhost->listen_port = info->port;
vhost->iface = info->iface;
lwsl_notice(" using listen skt from vhost %s\n",
vh->name);
return 0;
}
}
vh = vh->vhost_next;
}
#if LWS_POSIX
#if defined(__linux__)
limit = vhost->context->count_threads;
#endif
for (m = 0; m < limit; m++) {
#ifdef LWS_USE_UNIX_SOCK
if (LWS_UNIX_SOCK_ENABLED(vhost))
sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
else
#endif
#ifdef LWS_USE_IPV6
if (LWS_IPV6_ENABLED(context))
sockfd = socket(AF_INET6, SOCK_STREAM, 0);
else
#endif
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd == -1) {
#else
sockfd = mbed3_create_tcp_stream_socket();
if (!lws_sockfd_valid(sockfd)) {
#endif
lwsl_err("ERROR opening socket\n");
return 1;
}
#if LWS_POSIX
/*
* allow us to restart even if old sockets in TIME_WAIT
*/
if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR,
(const void *)&opt, sizeof(opt)) < 0) {
compatible_close(sockfd);
return 1;
}
#if defined(__linux__) && defined(SO_REUSEPORT) && LWS_MAX_SMP > 1
if (vhost->context->count_threads > 1)
if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEPORT,
(const void *)&opt, sizeof(opt)) < 0) {
compatible_close(sockfd);
return 1;
}
#endif
#endif
lws_plat_set_socket_options(vhost, sockfd);
#if LWS_POSIX
n = lws_socket_bind(vhost, sockfd, info->port, info->iface);
if (n < 0)
goto bail;
info->port = n;
#endif
vhost->listen_port = info->port;
vhost->iface = info->iface;
wsi = lws_zalloc(sizeof(struct lws));
if (wsi == NULL) {
lwsl_err("Out of mem\n");
goto bail;
}
wsi->context = vhost->context;
wsi->sock = sockfd;
wsi->mode = LWSCM_SERVER_LISTENER;
wsi->protocol = vhost->protocols;
wsi->tsi = m;
wsi->vhost = vhost;
wsi->listener = 1;
vhost->context->pt[m].wsi_listening = wsi;
if (insert_wsi_socket_into_fds(vhost->context, wsi))
goto bail;
vhost->context->count_wsi_allocated++;
vhost->lserv_wsi = wsi;
#if LWS_POSIX
listen(wsi->sock, LWS_SOMAXCONN);
} /* for each thread able to independently lister */
#else
mbed3_tcp_stream_bind(wsi->sock, info->port, wsi);
#endif
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_EXPLICIT_VHOSTS)) {
#ifdef LWS_USE_UNIX_SOCK
if (LWS_UNIX_SOCK_ENABLED(vhost))
lwsl_notice(" Listening on \"%s\"\n", info->iface);
else
#endif
lwsl_notice(" Listening on port %d\n", info->port);
}
return 0;
bail:
compatible_close(sockfd);
return 1;
}
int
_lws_server_listen_accept_flow_control(struct lws *twsi, int on)
{
struct lws_context_per_thread *pt = &twsi->context->pt[(int)twsi->tsi];
struct lws *wsi = pt->wsi_listening;
int n;
if (!wsi || twsi->context->being_destroyed)
return 0;
lwsl_debug("%s: Thr %d: LISTEN wsi %p: state %d\n",
__func__, twsi->tsi, (void *)wsi, on);
if (on)
n = lws_change_pollfd(wsi, 0, LWS_POLLIN);
else
n = lws_change_pollfd(wsi, LWS_POLLIN, 0);
return n;
}
struct lws_vhost *
lws_select_vhost(struct lws_context *context, int port, const char *servername)
{
struct lws_vhost *vhost = context->vhost_list;
while (vhost) {
if (port == vhost->listen_port &&
!strcmp(vhost->name, servername)) {
lwsl_info("SNI: Found: %s\n", servername);
return vhost;
}
vhost = vhost->vhost_next;
}
return NULL;
}
static const char * get_mimetype(const char *file)
{
int n = strlen(file);
if (n < 5)
return NULL;
if (!strcmp(&file[n - 4], ".ico"))
return "image/x-icon";
if (!strcmp(&file[n - 4], ".gif"))
return "image/gif";
if (!strcmp(&file[n - 3], ".js"))
return "text/javascript";
if (!strcmp(&file[n - 4], ".png"))
return "image/png";
if (!strcmp(&file[n - 4], ".jpg"))
return "image/jpeg";
if (!strcmp(&file[n - 5], ".html"))
return "text/html";
if (!strcmp(&file[n - 4], ".css"))
return "text/css";
if (!strcmp(&file[n - 4], ".ttf"))
return "application/x-font-ttf";
return NULL;
}
char *
lws_generate_client_handshake(struct lws *wsi, char *pkt)
{
char *p = pkt;
const char *meth;
const char *pp = lws_hdr_simple_ptr(wsi,
_WSI_TOKEN_CLIENT_SENT_PROTOCOLS);
meth = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_METHOD);
if (!meth) {
meth = "GET";
wsi->do_ws = 1;
} else {
wsi->do_ws = 0;
}
if (!strcmp(meth, "RAW")) {
lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0);
lwsl_notice("client transition to raw\n");
if (pp) {
const struct lws_protocols *pr;
pr = lws_vhost_name_to_protocol(wsi->vhost, pp);
if (!pr) {
lwsl_err("protocol %s not enabled on vhost\n",
pp);
return NULL;
}
lws_bind_protocol(wsi, pr);
}
if ((wsi->protocol->callback)(wsi, LWS_CALLBACK_RAW_ADOPT,
wsi->user_space, NULL, 0))
return NULL;
lws_role_transition(wsi, 0, LRS_ESTABLISHED, &role_ops_raw_skt);
lws_header_table_detach(wsi, 1);
return NULL;
}
/*
* 04 example client handshake
*
* GET /chat HTTP/1.1
* Host: server.example.com
* Upgrade: websocket
* Connection: Upgrade
* Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
* Sec-WebSocket-Origin: http://example.com
* Sec-WebSocket-Protocol: chat, superchat
* Sec-WebSocket-Version: 4
*/
p += sprintf(p, "%s %s HTTP/1.1\x0d\x0a", meth,
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_URI));
p += sprintf(p, "Pragma: no-cache\x0d\x0a"
"Cache-Control: no-cache\x0d\x0a");
p += sprintf(p, "Host: %s\x0d\x0a",
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_HOST));
if (lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_ORIGIN)) {
if (lws_check_opt(wsi->context->options,
LWS_SERVER_OPTION_JUST_USE_RAW_ORIGIN))
p += sprintf(p, "Origin: %s\x0d\x0a",
lws_hdr_simple_ptr(wsi,
_WSI_TOKEN_CLIENT_ORIGIN));
else
p += sprintf(p, "Origin: http://%s\x0d\x0a",
lws_hdr_simple_ptr(wsi,
_WSI_TOKEN_CLIENT_ORIGIN));
}
#if defined(LWS_ROLE_WS)
if (wsi->do_ws)
p = lws_generate_client_ws_handshake(wsi, p);
#endif
/* give userland a chance to append, eg, cookies */
if (wsi->protocol->callback(wsi,
LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER,
wsi->user_space, &p,
(pkt + wsi->context->pt_serv_buf_size) - p - 12))
return NULL;
p += sprintf(p, "\x0d\x0a");
return p;
}
LWS_VISIBLE int
lws_server_socket_service_ssl(struct lws *wsi, lws_sockfd_type accept_fd)
{
struct lws_context *context = wsi->context;
struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
int n, m;
#ifndef USE_WOLFSSL
BIO *bio;
#endif
if (!LWS_SSL_ENABLED(context))
return 0;
switch (wsi->mode) {
case LWSCM_SSL_INIT:
wsi->ssl = SSL_new(context->ssl_ctx);
if (wsi->ssl == NULL) {
lwsl_err("SSL_new failed: %s\n",
ERR_error_string(SSL_get_error(wsi->ssl, 0), NULL));
lws_decode_ssl_error();
if (accept_fd != LWS_SOCK_INVALID)
compatible_close(accept_fd);
goto fail;
}
SSL_set_ex_data(wsi->ssl,
openssl_websocket_private_data_index, context);
SSL_set_fd(wsi->ssl, accept_fd);
#ifdef USE_WOLFSSL
#ifdef USE_OLD_CYASSL
CyaSSL_set_using_nonblock(wsi->ssl, 1);
#else
wolfSSL_set_using_nonblock(wsi->ssl, 1);
#endif
#else
SSL_set_mode(wsi->ssl, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
bio = SSL_get_rbio(wsi->ssl);
if (bio)
BIO_set_nbio(bio, 1); /* nonblocking */
else
lwsl_notice("NULL rbio\n");
bio = SSL_get_wbio(wsi->ssl);
if (bio)
BIO_set_nbio(bio, 1); /* nonblocking */
else
lwsl_notice("NULL rbio\n");
#endif
/*
* we are not accepted yet, but we need to enter ourselves
* as a live connection. That way we can retry when more
* pieces come if we're not sorted yet
*/
wsi->mode = LWSCM_SSL_ACK_PENDING;
if (insert_wsi_socket_into_fds(context, wsi))
goto fail;
lws_set_timeout(wsi, PENDING_TIMEOUT_SSL_ACCEPT,
context->timeout_secs);
lwsl_info("inserted SSL accept into fds, trying SSL_accept\n");
/* fallthru */
case LWSCM_SSL_ACK_PENDING:
if (lws_change_pollfd(wsi, LWS_POLLOUT, 0))
goto fail;
lws_latency_pre(context, wsi);
n = recv(wsi->sock, (char *)pt->serv_buf, LWS_MAX_SOCKET_IO_BUF,
MSG_PEEK);
/*
* optionally allow non-SSL connect on SSL listening socket
* This is disabled by default, if enabled it goes around any
* SSL-level access control (eg, client-side certs) so leave
* it disabled unless you know it's not a problem for you
*/
if (context->allow_non_ssl_on_ssl_port) {
if (n >= 1 && pt->serv_buf[0] >= ' ') {
/*
* TLS content-type for Handshake is 0x16, and
* for ChangeCipherSpec Record, it's 0x14
*
* A non-ssl session will start with the HTTP
* method in ASCII. If we see it's not a legit
* SSL handshake kill the SSL for this
* connection and try to handle as a HTTP
* connection upgrade directly.
*/
wsi->use_ssl = 0;
SSL_shutdown(wsi->ssl);
SSL_free(wsi->ssl);
wsi->ssl = NULL;
if (lws_check_opt(context->options,
LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS))
wsi->redirect_to_https = 1;
goto accepted;
}
if (!n) /*
* connection is gone, or nothing to read
* if it's gone, we will timeout on
* PENDING_TIMEOUT_SSL_ACCEPT
*/
break;
if (n < 0 && (LWS_ERRNO == LWS_EAGAIN ||
LWS_ERRNO == LWS_EWOULDBLOCK)) {
/*
* well, we get no way to know ssl or not
* so go around again waiting for something
* to come and give us a hint, or timeout the
* connection.
*/
m = SSL_ERROR_WANT_READ;
goto go_again;
}
}
/* normal SSL connection processing path */
n = SSL_accept(wsi->ssl);
lws_latency(context, wsi,
"SSL_accept LWSCM_SSL_ACK_PENDING\n", n, n == 1);
if (n == 1)
goto accepted;
m = SSL_get_error(wsi->ssl, n);
lwsl_debug("SSL_accept failed %d / %s\n",
m, ERR_error_string(m, NULL));
go_again:
if (m == SSL_ERROR_WANT_READ) {
if (lws_change_pollfd(wsi, 0, LWS_POLLIN))
goto fail;
lwsl_info("SSL_ERROR_WANT_READ\n");
break;
}
if (m == SSL_ERROR_WANT_WRITE) {
if (lws_change_pollfd(wsi, 0, LWS_POLLOUT))
goto fail;
break;
}
lwsl_debug("SSL_accept failed skt %u: %s\n",
wsi->sock, ERR_error_string(m, NULL));
goto fail;
accepted:
/* OK, we are accepted... give him some time to negotiate */
lws_set_timeout(wsi, PENDING_TIMEOUT_ESTABLISH_WITH_SERVER,
context->timeout_secs);
wsi->mode = LWSCM_HTTP_SERVING;
lws_http2_configure_if_upgraded(wsi);
lwsl_debug("accepted new SSL conn\n");
break;
}
return 0;
fail:
return 1;
}
/*
* this may now get called after the vhost creation, when certs become
* available.
*/
int
lws_tls_server_certs_load(struct lws_vhost *vhost, struct lws *wsi,
const char *cert, const char *private_key,
const char *mem_cert, size_t mem_cert_len,
const char *mem_privkey, size_t mem_privkey_len)
{
#if !defined(OPENSSL_NO_EC)
const char *ecdh_curve = "prime256v1";
#if !defined(LWS_WITH_BORINGSSL) && defined(LWS_HAVE_SSL_EXTRA_CHAIN_CERTS)
STACK_OF(X509) *extra_certs = NULL;
#endif
EC_KEY *ecdh, *EC_key = NULL;
EVP_PKEY *pkey;
X509 *x = NULL;
int ecdh_nid;
int KeyType;
#endif
unsigned long error;
lws_filepos_t flen;
uint8_t *p;
int ret;
int n = lws_tls_generic_cert_checks(vhost, cert, private_key), m;
(void)ret;
if (!cert && !private_key)
n = LWS_TLS_EXTANT_ALTERNATIVE;
if (n == LWS_TLS_EXTANT_NO && (!mem_cert || !mem_privkey))
return 0;
if (n == LWS_TLS_EXTANT_NO)
n = LWS_TLS_EXTANT_ALTERNATIVE;
if (n == LWS_TLS_EXTANT_ALTERNATIVE && (!mem_cert || !mem_privkey))
return 1; /* no alternative */
if (n == LWS_TLS_EXTANT_ALTERNATIVE) {
#if OPENSSL_VERSION_NUMBER >= 0x10100000L
/*
* Although we have prepared update certs, we no longer have
* the rights to read our own cert + key we saved.
*
* If we were passed copies in memory buffers, use those
* in favour of the filepaths we normally want.
*/
cert = NULL;
private_key = NULL;
}
/*
* use the multi-cert interface for backwards compatibility in the
* both simple files case
*/
if (n != LWS_TLS_EXTANT_ALTERNATIVE && cert) {
/* set the local certificate from CertFile */
m = SSL_CTX_use_certificate_chain_file(vhost->tls.ssl_ctx, cert);
if (m != 1) {
error = ERR_get_error();
lwsl_err("problem getting cert '%s' %lu: %s\n",
cert, error, ERR_error_string(error,
(char *)vhost->context->pt[0].serv_buf));
return 1;
}
if (private_key) {
/* set the private key from KeyFile */
if (SSL_CTX_use_PrivateKey_file(vhost->tls.ssl_ctx, private_key,
SSL_FILETYPE_PEM) != 1) {
error = ERR_get_error();
lwsl_err("ssl problem getting key '%s' %lu: %s\n",
private_key, error,
ERR_error_string(error,
(char *)vhost->context->pt[0].serv_buf));
return 1;
}
} else {
if (vhost->protocols[0].callback(wsi,
LWS_CALLBACK_OPENSSL_CONTEXT_REQUIRES_PRIVATE_KEY,
vhost->tls.ssl_ctx, NULL, 0)) {
lwsl_err("ssl private key not set\n");
return 1;
}
}
return 0;
}
/* otherwise allow for DER or PEM, file or memory image */
if (lws_tls_alloc_pem_to_der_file(vhost->context, cert, mem_cert,
mem_cert_len, &p, &flen)) {
lwsl_err("%s: couldn't read cert file\n", __func__);
return 1;
}
#if !defined(USE_WOLFSSL)
ret = SSL_CTX_use_certificate_ASN1(vhost->tls.ssl_ctx, (int)flen, p);
#else
ret = wolfSSL_CTX_use_certificate_buffer(vhost->tls.ssl_ctx,
(uint8_t *)p, (int)flen,
WOLFSSL_FILETYPE_ASN1);
#endif
lws_free_set_NULL(p);
if (ret != 1) {
lwsl_err("%s: Problem loading cert\n", __func__);
return 1;
}
if (lws_tls_alloc_pem_to_der_file(vhost->context, private_key,
mem_privkey, mem_privkey_len,
&p, &flen)) {
lwsl_notice("unable to convert memory privkey\n");
return 1;
}
#if !defined(USE_WOLFSSL)
ret = SSL_CTX_use_PrivateKey_ASN1(EVP_PKEY_RSA, vhost->tls.ssl_ctx, p,
(long)(long long)flen);
if (ret != 1) {
ret = SSL_CTX_use_PrivateKey_ASN1(EVP_PKEY_EC,
vhost->tls.ssl_ctx, p,
(long)(long long)flen);
}
#else
ret = wolfSSL_CTX_use_PrivateKey_buffer(vhost->tls.ssl_ctx, p, flen,
WOLFSSL_FILETYPE_ASN1);
#endif
lws_free_set_NULL(p);
if (ret != 1) {
lwsl_notice("unable to use memory privkey\n");
return 1;
}
#else
/*
* Although we have prepared update certs, we no longer have
* the rights to read our own cert + key we saved.
*
* If we were passed copies in memory buffers, use those
* instead.
*
* The passed memory-buffer cert image is in DER, and the
* memory-buffer private key image is PEM.
*/
#ifndef USE_WOLFSSL
if (SSL_CTX_use_certificate_ASN1(vhost->tls.ssl_ctx,
(int)mem_cert_len,
(uint8_t *)mem_cert) != 1) {
#else
if (wolfSSL_CTX_use_certificate_buffer(vhost->tls.ssl_ctx,
(uint8_t *)mem_cert,
(int)mem_cert_len,
WOLFSSL_FILETYPE_ASN1) != 1) {
#endif
lwsl_err("Problem loading update cert\n");
return 1;
}
if (lws_tls_alloc_pem_to_der_file(vhost->context, NULL,
mem_privkey, mem_privkey_len,
&p, &flen)) {
lwsl_notice("unable to convert memory privkey\n");
return 1;
}
#ifndef USE_WOLFSSL
if (SSL_CTX_use_PrivateKey_ASN1(EVP_PKEY_RSA,
vhost->tls.ssl_ctx, p,
(long)(long long)flen) != 1) {
#else
if (wolfSSL_CTX_use_PrivateKey_buffer(vhost->tls.ssl_ctx, p,
flen, WOLFSSL_FILETYPE_ASN1) != 1) {
#endif
lwsl_notice("unable to use memory privkey\n");
return 1;
}
goto check_key;
}
/* set the local certificate from CertFile */
m = SSL_CTX_use_certificate_chain_file(vhost->tls.ssl_ctx, cert);
if (m != 1) {
error = ERR_get_error();
lwsl_err("problem getting cert '%s' %lu: %s\n",
cert, error, ERR_error_string(error,
(char *)vhost->context->pt[0].serv_buf));
return 1;
}
if (n != LWS_TLS_EXTANT_ALTERNATIVE && private_key) {
/* set the private key from KeyFile */
if (SSL_CTX_use_PrivateKey_file(vhost->tls.ssl_ctx, private_key,
SSL_FILETYPE_PEM) != 1) {
error = ERR_get_error();
lwsl_err("ssl problem getting key '%s' %lu: %s\n",
private_key, error,
ERR_error_string(error,
(char *)vhost->context->pt[0].serv_buf));
return 1;
}
} else {
if (vhost->protocols[0].callback(wsi,
LWS_CALLBACK_OPENSSL_CONTEXT_REQUIRES_PRIVATE_KEY,
vhost->tls.ssl_ctx, NULL, 0)) {
lwsl_err("ssl private key not set\n");
return 1;
}
}
check_key:
#endif
/* verify private key */
if (!SSL_CTX_check_private_key(vhost->tls.ssl_ctx)) {
lwsl_err("Private SSL key doesn't match cert\n");
return 1;
}
#if !defined(OPENSSL_NO_EC)
if (vhost->tls.ecdh_curve[0])
ecdh_curve = vhost->tls.ecdh_curve;
ecdh_nid = OBJ_sn2nid(ecdh_curve);
if (NID_undef == ecdh_nid) {
lwsl_err("SSL: Unknown curve name '%s'", ecdh_curve);
return 1;
}
ecdh = EC_KEY_new_by_curve_name(ecdh_nid);
if (NULL == ecdh) {
lwsl_err("SSL: Unable to create curve '%s'", ecdh_curve);
return 1;
}
SSL_CTX_set_tmp_ecdh(vhost->tls.ssl_ctx, ecdh);
EC_KEY_free(ecdh);
SSL_CTX_set_options(vhost->tls.ssl_ctx, SSL_OP_SINGLE_ECDH_USE);
lwsl_notice(" SSL ECDH curve '%s'\n", ecdh_curve);
if (lws_check_opt(vhost->context->options, LWS_SERVER_OPTION_SSL_ECDH))
lwsl_notice(" Using ECDH certificate support\n");
/* Get X509 certificate from ssl context */
#if !defined(LWS_WITH_BORINGSSL)
#if !defined(LWS_HAVE_SSL_EXTRA_CHAIN_CERTS)
x = sk_X509_value(vhost->tls.ssl_ctx->extra_certs, 0);
#else
SSL_CTX_get_extra_chain_certs_only(vhost->tls.ssl_ctx, &extra_certs);
if (extra_certs)
x = sk_X509_value(extra_certs, 0);
else
lwsl_info("%s: no extra certs\n", __func__);
#endif
if (!x) {
//lwsl_err("%s: x is NULL\n", __func__);
goto post_ecdh;
}
#else
return 0;
#endif
/* Get the public key from certificate */
pkey = X509_get_pubkey(x);
if (!pkey) {
lwsl_err("%s: pkey is NULL\n", __func__);
return 1;
}
/* Get the key type */
KeyType = EVP_PKEY_type(EVP_PKEY_id(pkey));
if (EVP_PKEY_EC != KeyType) {
lwsl_notice("Key type is not EC\n");
return 0;
}
/* Get the key */
EC_key = EVP_PKEY_get1_EC_KEY(pkey);
/* Set ECDH parameter */
if (!EC_key) {
lwsl_err("%s: ECDH key is NULL \n", __func__);
return 1;
}
SSL_CTX_set_tmp_ecdh(vhost->tls.ssl_ctx, EC_key);
EC_KEY_free(EC_key);
#else
lwsl_notice(" OpenSSL doesn't support ECDH\n");
#endif
#if !defined(OPENSSL_NO_EC) && !defined(LWS_WITH_BORINGSSL)
post_ecdh:
#endif
vhost->tls.skipped_certs = 0;
return 0;
}
int
lws_tls_server_vhost_backend_init(const struct lws_context_creation_info *info,
struct lws_vhost *vhost, struct lws *wsi)
{
unsigned long error;
SSL_METHOD *method = (SSL_METHOD *)SSLv23_server_method();
if (!method) {
error = ERR_get_error();
lwsl_err("problem creating ssl method %lu: %s\n",
error, ERR_error_string(error,
(char *)vhost->context->pt[0].serv_buf));
return 1;
}
vhost->tls.ssl_ctx = SSL_CTX_new(method); /* create context */
if (!vhost->tls.ssl_ctx) {
error = ERR_get_error();
lwsl_err("problem creating ssl context %lu: %s\n",
error, ERR_error_string(error,
(char *)vhost->context->pt[0].serv_buf));
return 1;
}
SSL_CTX_set_ex_data(vhost->tls.ssl_ctx,
openssl_SSL_CTX_private_data_index,
(char *)vhost->context);
/* Disable SSLv2 and SSLv3 */
SSL_CTX_set_options(vhost->tls.ssl_ctx, SSL_OP_NO_SSLv2 |
SSL_OP_NO_SSLv3);
#ifdef SSL_OP_NO_COMPRESSION
SSL_CTX_set_options(vhost->tls.ssl_ctx, SSL_OP_NO_COMPRESSION);
#endif
SSL_CTX_set_options(vhost->tls.ssl_ctx, SSL_OP_SINGLE_DH_USE);
SSL_CTX_set_options(vhost->tls.ssl_ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
if (info->ssl_cipher_list)
SSL_CTX_set_cipher_list(vhost->tls.ssl_ctx, info->ssl_cipher_list);
#if defined(LWS_HAVE_SSL_CTX_set_ciphersuites)
if (info->tls1_3_plus_cipher_list)
SSL_CTX_set_ciphersuites(vhost->tls.ssl_ctx,
info->tls1_3_plus_cipher_list);
#endif
#if !defined(OPENSSL_NO_TLSEXT)
SSL_CTX_set_tlsext_servername_callback(vhost->tls.ssl_ctx,
lws_ssl_server_name_cb);
SSL_CTX_set_tlsext_servername_arg(vhost->tls.ssl_ctx, vhost->context);
#endif
if (info->ssl_ca_filepath &&
!SSL_CTX_load_verify_locations(vhost->tls.ssl_ctx,
info->ssl_ca_filepath, NULL)) {
lwsl_err("%s: SSL_CTX_load_verify_locations unhappy\n",
__func__);
}
if (info->ssl_options_set)
SSL_CTX_set_options(vhost->tls.ssl_ctx, info->ssl_options_set);
/* SSL_clear_options introduced in 0.9.8m */
#if (OPENSSL_VERSION_NUMBER >= 0x009080df) && !defined(USE_WOLFSSL)
if (info->ssl_options_clear)
SSL_CTX_clear_options(vhost->tls.ssl_ctx,
info->ssl_options_clear);
#endif
lwsl_info(" SSL options 0x%lX\n",
(unsigned long)SSL_CTX_get_options(vhost->tls.ssl_ctx));
if (!vhost->tls.use_ssl ||
(!info->ssl_cert_filepath && !info->server_ssl_cert_mem))
return 0;
lws_ssl_bind_passphrase(vhost->tls.ssl_ctx, info);
return lws_tls_server_certs_load(vhost, wsi, info->ssl_cert_filepath,
info->ssl_private_key_filepath,
info->server_ssl_cert_mem,
info->server_ssl_cert_mem_len,
info->server_ssl_private_key_mem,
info->server_ssl_private_key_mem_len);
}
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;
}
LWS_VISIBLE int
lws_context_init_server_ssl(struct lws_context_creation_info *info,
struct lws_vhost *vhost)
{
SSL_METHOD *method;
struct lws_context *context = vhost->context;
struct lws wsi;
int error;
int n;
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT)) {
vhost->use_ssl = 0;
return 0;
}
if (info->port != CONTEXT_PORT_NO_LISTEN) {
vhost->use_ssl = info->ssl_cert_filepath != NULL;
if (vhost->use_ssl && info->ssl_cipher_list)
lwsl_notice(" SSL ciphers: '%s'\n", info->ssl_cipher_list);
if (vhost->use_ssl)
lwsl_notice(" Using SSL mode\n");
else
lwsl_notice(" Using non-SSL mode\n");
}
/*
* give him a fake wsi with context + vhost set, so he can use
* lws_get_context() in the callback
*/
memset(&wsi, 0, sizeof(wsi));
wsi.vhost = vhost;
wsi.context = vhost->context;
/*
* Firefox insists on SSLv23 not SSLv3
* Konq disables SSLv2 by default now, SSLv23 works
*
* SSLv23_server_method() is the openssl method for "allow all TLS
* versions", compared to e.g. TLSv1_2_server_method() which only allows
* tlsv1.2. Unwanted versions must be disabled using SSL_CTX_set_options()
*/
method = (SSL_METHOD *)SSLv23_server_method();
if (!method) {
error = ERR_get_error();
lwsl_err("problem creating ssl method %lu: %s\n",
error, ERR_error_string(error,
(char *)context->pt[0].serv_buf));
return 1;
}
vhost->ssl_ctx = SSL_CTX_new(method); /* create context */
if (!vhost->ssl_ctx) {
error = ERR_get_error();
lwsl_err("problem creating ssl context %lu: %s\n",
error, ERR_error_string(error,
(char *)context->pt[0].serv_buf));
return 1;
}
/* associate the lws context with the SSL_CTX */
SSL_CTX_set_ex_data(vhost->ssl_ctx,
openssl_SSL_CTX_private_data_index, vhost->context);
/* Disable SSLv2 and SSLv3 */
SSL_CTX_set_options(vhost->ssl_ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
#ifdef SSL_OP_NO_COMPRESSION
SSL_CTX_set_options(vhost->ssl_ctx, SSL_OP_NO_COMPRESSION);
#endif
SSL_CTX_set_options(vhost->ssl_ctx, SSL_OP_SINGLE_DH_USE);
SSL_CTX_set_options(vhost->ssl_ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
if (info->ssl_cipher_list)
SSL_CTX_set_cipher_list(vhost->ssl_ctx,
info->ssl_cipher_list);
/* as a server, are we requiring clients to identify themselves? */
if (lws_check_opt(info->options, LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT)) {
int verify_options = SSL_VERIFY_PEER;
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_PEER_CERT_NOT_REQUIRED))
verify_options |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
SSL_CTX_set_session_id_context(vhost->ssl_ctx,
(unsigned char *)context, sizeof(void *));
/* absolutely require the client cert */
SSL_CTX_set_verify(vhost->ssl_ctx,
verify_options, OpenSSL_verify_callback);
}
#ifndef OPENSSL_NO_TLSEXT
SSL_CTX_set_tlsext_servername_callback(vhost->ssl_ctx,
lws_ssl_server_name_cb);
#endif
/*
* give user code a chance to load certs into the server
* allowing it to verify incoming client certs
*/
if (info->ssl_ca_filepath &&
!SSL_CTX_load_verify_locations(vhost->ssl_ctx,
info->ssl_ca_filepath, NULL)) {
lwsl_err("%s: SSL_CTX_load_verify_locations unhappy\n", __func__);
}
if (vhost->use_ssl) {
if (lws_context_ssl_init_ecdh_curve(info, vhost))
return -1;
vhost->protocols[0].callback(&wsi,
LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS,
vhost->ssl_ctx, NULL, 0);
}
if (lws_check_opt(info->options, LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT))
/* Normally SSL listener rejects non-ssl, optionally allow */
vhost->allow_non_ssl_on_ssl_port = 1;
if (vhost->use_ssl) {
/* openssl init for server sockets */
/* set the local certificate from CertFile */
n = SSL_CTX_use_certificate_chain_file(vhost->ssl_ctx,
info->ssl_cert_filepath);
if (n != 1) {
error = ERR_get_error();
lwsl_err("problem getting cert '%s' %lu: %s\n",
info->ssl_cert_filepath,
error,
ERR_error_string(error,
(char *)context->pt[0].serv_buf));
return 1;
}
lws_ssl_bind_passphrase(vhost->ssl_ctx, info);
if (info->ssl_private_key_filepath != NULL) {
/* set the private key from KeyFile */
if (SSL_CTX_use_PrivateKey_file(vhost->ssl_ctx,
info->ssl_private_key_filepath,
SSL_FILETYPE_PEM) != 1) {
error = ERR_get_error();
lwsl_err("ssl problem getting key '%s' %lu: %s\n",
info->ssl_private_key_filepath, error,
ERR_error_string(error,
(char *)context->pt[0].serv_buf));
return 1;
}
} else
if (vhost->protocols[0].callback(&wsi,
LWS_CALLBACK_OPENSSL_CONTEXT_REQUIRES_PRIVATE_KEY,
vhost->ssl_ctx, NULL, 0)) {
lwsl_err("ssl private key not set\n");
return 1;
}
/* verify private key */
if (!SSL_CTX_check_private_key(vhost->ssl_ctx)) {
lwsl_err("Private SSL key doesn't match cert\n");
return 1;
}
if (lws_context_ssl_init_ecdh(vhost))
return 1;
/*
* SSL is happy and has a cert it's content with
* If we're supporting HTTP2, initialize that
*/
lws_context_init_http2_ssl(context);
}
return 0;
}
