/*
* Create an SSL connection, but does not ready any post-handshake
* NewSessionTicket messages.
*/
int create_bare_ssl_connection(SSL *serverssl, SSL *clientssl, int want)
{
int retc = -1, rets = -1, err, abortctr = 0;
int clienterr = 0, servererr = 0;
int isdtls = SSL_is_dtls(serverssl);
do {
err = SSL_ERROR_WANT_WRITE;
while (!clienterr && retc <= 0 && err == SSL_ERROR_WANT_WRITE) {
retc = SSL_connect(clientssl);
if (retc <= 0)
err = SSL_get_error(clientssl, retc);
}
if (!clienterr && retc <= 0 && err != SSL_ERROR_WANT_READ) {
TEST_info("SSL_connect() failed %d, %d", retc, err);
clienterr = 1;
}
if (want != SSL_ERROR_NONE && err == want)
return 0;
err = SSL_ERROR_WANT_WRITE;
while (!servererr && rets <= 0 && err == SSL_ERROR_WANT_WRITE) {
rets = SSL_accept(serverssl);
if (rets <= 0)
err = SSL_get_error(serverssl, rets);
}
if (!servererr && rets <= 0
&& err != SSL_ERROR_WANT_READ
&& err != SSL_ERROR_WANT_X509_LOOKUP) {
TEST_info("SSL_accept() failed %d, %d", rets, err);
servererr = 1;
}
if (want != SSL_ERROR_NONE && err == want)
return 0;
if (clienterr && servererr)
return 0;
if (isdtls) {
if (rets > 0 && retc <= 0)
DTLSv1_handle_timeout(serverssl);
if (retc > 0 && rets <= 0)
DTLSv1_handle_timeout(clientssl);
}
if (++abortctr == MAXLOOPS) {
TEST_info("No progress made");
return 0;
}
if (isdtls && abortctr <= 50 && (abortctr % 10) == 0) {
/*
* It looks like we're just spinning. Pause for a short period to
* give the DTLS timer a chance to do something. We only do this for
* the first few times to prevent hangs.
*/
ossl_sleep(50);
}
} while (retc <=0 || rets <= 0);
return 1;
}
static gpointer connection_timeout_thread_func(ErDtlsConnection *self)
{
ErDtlsConnectionPrivate *priv = self->priv;
struct timeval timeout;
gint64 end_time, wait_time;
gint ret;
while (priv->is_alive) {
LOG_TRACE(self, "locking @ timeout");
g_mutex_lock(&priv->mutex);
LOG_TRACE(self, "locked @ timeout");
if (DTLSv1_get_timeout(priv->ssl, &timeout)) {
wait_time = timeout.tv_sec * G_USEC_PER_SEC + timeout.tv_usec;
if (wait_time) {
LOG_DEBUG(self, "waiting for %" G_GINT64_FORMAT " usec", wait_time);
end_time = g_get_monotonic_time() + wait_time;
LOG_TRACE(self, "wait @ timeout");
g_cond_wait_until(&priv->condition, &priv->mutex, end_time);
LOG_TRACE(self, "continued @ timeout");
}
ret = DTLSv1_handle_timeout(priv->ssl);
LOG_DEBUG(self, "handle timeout returned %d, is_alive: %d", ret, priv->is_alive);
if (ret < 0) {
LOG_TRACE(self, "unlocking @ timeout failed");
g_mutex_unlock(&priv->mutex);
break; /* self failed after DTLS1_TMO_ALERT_COUNT (12) attempts */
}
if (ret > 0) {
log_state(self, "handling timeout before poll");
openssl_poll(self);
log_state(self, "handling timeout after poll");
}
} else {
LOG_DEBUG(self, "waiting indefinitely");
priv->timeout_set = FALSE;
while (!priv->timeout_set && priv->is_alive) {
LOG_TRACE(self, "wait @ timeout");
g_cond_wait(&priv->condition, &priv->mutex);
}
LOG_TRACE(self, "continued @ timeout");
}
LOG_TRACE(self, "unlocking @ timeout");
g_mutex_unlock(&priv->mutex);
}
log_state(self, "timeout thread exiting");
return NULL;
}
static void
handle_timeout (gpointer data, gpointer user_data)
{
GstDtlsConnection *self = user_data;
GstDtlsConnectionPrivate *priv;
gint ret;
priv = self->priv;
g_mutex_lock (&priv->mutex);
priv->timeout_pending = FALSE;
if (priv->is_alive) {
ret = DTLSv1_handle_timeout (priv->ssl);
GST_DEBUG_OBJECT (self, "handle timeout returned %d, is_alive: %d", ret,
priv->is_alive);
if (ret < 0) {
GST_WARNING_OBJECT (self, "handling timeout failed");
} else if (ret > 0) {
log_state (self, "handling timeout before poll");
openssl_poll (self);
log_state (self, "handling timeout after poll");
}
}
g_mutex_unlock (&priv->mutex);
}
gboolean janus_dtls_retry(gpointer stack) {
janus_dtls_srtp *dtls = (janus_dtls_srtp *)stack;
if(dtls == NULL)
return FALSE;
janus_ice_component *component = (janus_ice_component *)dtls->component;
if(component == NULL)
return FALSE;
janus_ice_stream *stream = component->stream;
if(!stream)
return FALSE;
janus_ice_handle *handle = stream->handle;
if(!handle)
return FALSE;
if(janus_flags_is_set(&handle->webrtc_flags, JANUS_ICE_HANDLE_WEBRTC_STOP))
return FALSE;
if(dtls->dtls_state == JANUS_DTLS_STATE_CONNECTED) {
JANUS_LOG(LOG_VERB, "[%"SCNu64"] DTLS already set up, disabling retransmission timer!\n", handle->handle_id);
if(component->source != NULL) {
g_source_destroy(component->source);
g_source_unref(component->source);
component->source = NULL;
}
return FALSE;
}
struct timeval timeout = {0};
DTLSv1_get_timeout(dtls->ssl, &timeout);
guint64 timeout_value = timeout.tv_sec*1000 + timeout.tv_usec/1000;
JANUS_LOG(LOG_HUGE, "[%"SCNu64"] DTLSv1_get_timeout: %"SCNu64"\n", handle->handle_id, timeout_value);
if(timeout_value == 0) {
JANUS_LOG(LOG_VERB, "[%"SCNu64"] DTLS timeout on component %d of stream %d, retransmitting\n", handle->handle_id, component->component_id, stream->stream_id);
DTLSv1_handle_timeout(dtls->ssl);
janus_dtls_fd_bridge(dtls);
}
return TRUE;
}
static void timeout(void *arg)
{
struct tls_conn *tc = arg;
DTLSv1_handle_timeout(tc->ssl);
check_timer(tc);
}
inline
void DtlsTransport::onTimer(Timer* timer)
{
MS_TRACE();
DTLSv1_handle_timeout(this->ssl);
// If required, send DTLS data.
SendPendingOutgoingDtlsData();
// Set the DTLS timer again.
SetTimeout();
}
gboolean janus_dtls_retry(gpointer stack) {
janus_dtls_srtp *dtls = (janus_dtls_srtp *)stack;
if(dtls == NULL)
return FALSE;
janus_ice_component *component = (janus_ice_component *)dtls->component;
if(component == NULL)
return FALSE;
janus_ice_stream *stream = component->stream;
if(!stream)
goto stoptimer;
janus_ice_handle *handle = stream->handle;
if(!handle)
goto stoptimer;
if(janus_flags_is_set(&handle->webrtc_flags, JANUS_ICE_HANDLE_WEBRTC_STOP))
goto stoptimer;
if(dtls->dtls_state == JANUS_DTLS_STATE_CONNECTED) {
JANUS_LOG(LOG_VERB, "[%"SCNu64"] DTLS already set up, disabling retransmission timer!\n", handle->handle_id);
goto stoptimer;
}
if(janus_get_monotonic_time() - dtls->dtls_started >= 20*G_USEC_PER_SEC) {
/* FIXME Should we really give up after 20 seconds waiting for DTLS? */
JANUS_LOG(LOG_ERR, "[%"SCNu64"] DTLS taking too much time for component %d in stream %d...\n",
handle->handle_id, component->component_id, stream->stream_id);
janus_ice_webrtc_hangup(handle, "DTLS timeout");
goto stoptimer;
}
struct timeval timeout = {0};
DTLSv1_get_timeout(dtls->ssl, &timeout);
guint64 timeout_value = timeout.tv_sec*1000 + timeout.tv_usec/1000;
JANUS_LOG(LOG_HUGE, "[%"SCNu64"] DTLSv1_get_timeout: %"SCNu64"\n", handle->handle_id, timeout_value);
if(timeout_value == 0) {
dtls->retransmissions++;
JANUS_LOG(LOG_VERB, "[%"SCNu64"] DTLS timeout on component %d of stream %d, retransmitting\n", handle->handle_id, component->component_id, stream->stream_id);
/* Notify event handlers */
janus_dtls_notify_state_change(dtls);
/* Retransmit the packet */
DTLSv1_handle_timeout(dtls->ssl);
janus_dtls_fd_bridge(dtls);
}
return TRUE;
stoptimer:
if(component->dtlsrt_source != NULL) {
g_source_destroy(component->dtlsrt_source);
g_source_unref(component->dtlsrt_source);
component->dtlsrt_source = NULL;
}
return FALSE;
}
int
check_timeout() {
int i, result, err;
for (i = 0; i < MAX_SSL_PEERS; i++) {
if (ssl_peer_storage[i]) {
OPENSSL_assert(ssl_peer_storage[i]->ssl);
result = DTLSv1_handle_timeout(ssl_peer_storage[i]->ssl);
if (result < 0) {
err = SSL_get_error(ssl_peer_storage[i]->ssl,result);
fprintf(stderr, "dtls1_handle_timeout (%d): %s\n",
err, ERR_error_string(err, NULL));
}
}
}
/* remove outdated obbjects? */
return 0;
}
int MAIN(int argc, char **argv)
{
int off=0, clr = 0;
SSL *con=NULL,*con2=NULL;
X509_STORE *store = NULL;
int s,k,width,state=0;
char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
int cbuf_len,cbuf_off;
int sbuf_len,sbuf_off;
fd_set readfds,writefds;
short port=PORT;
int full_log=1;
char *host=SSL_HOST_NAME;
char *cert_file=NULL,*key_file=NULL;
int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
char *passarg = NULL, *pass = NULL;
X509 *cert = NULL;
EVP_PKEY *key = NULL;
char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
int cutthrough=0;
int crlf=0;
int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
SSL_CTX *ctx=NULL;
int ret=1,in_init=1,i,nbio_test=0;
int starttls_proto = PROTO_OFF;
int prexit = 0, vflags = 0;
SSL_METHOD *meth=NULL;
#ifdef sock_type
#undef sock_type
#endif
int sock_type=SOCK_STREAM;
BIO *sbio;
char *inrand=NULL;
int mbuf_len=0;
struct timeval timeout, *timeoutp;
#ifndef OPENSSL_NO_ENGINE
char *engine_id=NULL;
char *ssl_client_engine_id=NULL;
ENGINE *ssl_client_engine=NULL;
#endif
ENGINE *e=NULL;
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
struct timeval tv;
#endif
#ifndef OPENSSL_NO_TLSEXT
char *servername = NULL;
tlsextctx tlsextcbp =
{NULL,0};
#endif
char *sess_in = NULL;
char *sess_out = NULL;
struct sockaddr peer;
int peerlen = sizeof(peer);
int enable_timeouts = 0 ;
long socket_mtu = 0;
#ifndef OPENSSL_NO_JPAKE
char *jpake_secret = NULL;
#endif
#if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
meth=SSLv23_client_method();
#elif !defined(OPENSSL_NO_SSL3)
meth=SSLv3_client_method();
#elif !defined(OPENSSL_NO_SSL2)
meth=SSLv2_client_method();
#endif
apps_startup();
c_Pause=0;
c_quiet=0;
c_ign_eof=0;
c_debug=0;
c_msg=0;
c_showcerts=0;
if (bio_err == NULL)
bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
if (!load_config(bio_err, NULL))
goto end;
if ( ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
{
BIO_printf(bio_err,"out of memory\n");
goto end;
}
verify_depth=0;
verify_error=X509_V_OK;
#ifdef FIONBIO
c_nbio=0;
#endif
argc--;
argv++;
while (argc >= 1)
{
if (strcmp(*argv,"-host") == 0)
{
if (--argc < 1) goto bad;
host= *(++argv);
}
else if (strcmp(*argv,"-port") == 0)
{
if (--argc < 1) goto bad;
port=atoi(*(++argv));
if (port == 0) goto bad;
}
else if (strcmp(*argv,"-connect") == 0)
{
if (--argc < 1) goto bad;
if (!extract_host_port(*(++argv),&host,NULL,&port))
goto bad;
}
else if (strcmp(*argv,"-verify") == 0)
{
verify=SSL_VERIFY_PEER;
if (--argc < 1) goto bad;
verify_depth=atoi(*(++argv));
BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
}
else if (strcmp(*argv,"-cert") == 0)
{
if (--argc < 1) goto bad;
cert_file= *(++argv);
}
else if (strcmp(*argv,"-sess_out") == 0)
{
if (--argc < 1) goto bad;
sess_out = *(++argv);
}
else if (strcmp(*argv,"-sess_in") == 0)
{
if (--argc < 1) goto bad;
sess_in = *(++argv);
}
else if (strcmp(*argv,"-certform") == 0)
{
if (--argc < 1) goto bad;
cert_format = str2fmt(*(++argv));
}
else if (strcmp(*argv,"-crl_check") == 0)
vflags |= X509_V_FLAG_CRL_CHECK;
else if (strcmp(*argv,"-crl_check_all") == 0)
vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
else if (strcmp(*argv,"-prexit") == 0)
prexit=1;
else if (strcmp(*argv,"-crlf") == 0)
crlf=1;
else if (strcmp(*argv,"-quiet") == 0)
{
c_quiet=1;
c_ign_eof=1;
}
else if (strcmp(*argv,"-ign_eof") == 0)
c_ign_eof=1;
else if (strcmp(*argv,"-no_ign_eof") == 0)
c_ign_eof=0;
else if (strcmp(*argv,"-pause") == 0)
c_Pause=1;
else if (strcmp(*argv,"-debug") == 0)
c_debug=1;
#ifndef OPENSSL_NO_TLSEXT
else if (strcmp(*argv,"-tlsextdebug") == 0)
c_tlsextdebug=1;
else if (strcmp(*argv,"-status") == 0)
c_status_req=1;
#endif
#ifdef WATT32
else if (strcmp(*argv,"-wdebug") == 0)
dbug_init();
#endif
else if (strcmp(*argv,"-msg") == 0)
c_msg=1;
else if (strcmp(*argv,"-showcerts") == 0)
c_showcerts=1;
else if (strcmp(*argv,"-nbio_test") == 0)
nbio_test=1;
else if (strcmp(*argv,"-state") == 0)
state=1;
#ifndef OPENSSL_NO_SSL2
else if (strcmp(*argv,"-ssl2") == 0)
meth=SSLv2_client_method();
#endif
#ifndef OPENSSL_NO_SSL3
else if (strcmp(*argv,"-ssl3") == 0)
meth=SSLv3_client_method();
#endif
#ifndef OPENSSL_NO_TLS1
else if (strcmp(*argv,"-tls1") == 0)
meth=TLSv1_client_method();
#endif
#ifndef OPENSSL_NO_DTLS1
else if (strcmp(*argv,"-dtls1") == 0)
{
meth=DTLSv1_client_method();
sock_type=SOCK_DGRAM;
}
else if (strcmp(*argv,"-timeout") == 0)
enable_timeouts=1;
else if (strcmp(*argv,"-mtu") == 0)
{
if (--argc < 1) goto bad;
socket_mtu = atol(*(++argv));
}
#endif
else if (strcmp(*argv,"-bugs") == 0)
bugs=1;
else if (strcmp(*argv,"-keyform") == 0)
{
if (--argc < 1) goto bad;
key_format = str2fmt(*(++argv));
}
else if (strcmp(*argv,"-pass") == 0)
{
if (--argc < 1) goto bad;
passarg = *(++argv);
}
else if (strcmp(*argv,"-key") == 0)
{
if (--argc < 1) goto bad;
key_file= *(++argv);
}
else if (strcmp(*argv,"-reconnect") == 0)
{
reconnect=5;
}
else if (strcmp(*argv,"-CApath") == 0)
{
if (--argc < 1) goto bad;
CApath= *(++argv);
}
else if (strcmp(*argv,"-CAfile") == 0)
{
if (--argc < 1) goto bad;
CAfile= *(++argv);
}
else if (strcmp(*argv,"-no_tls1") == 0)
off|=SSL_OP_NO_TLSv1;
else if (strcmp(*argv,"-no_ssl3") == 0)
off|=SSL_OP_NO_SSLv3;
else if (strcmp(*argv,"-no_ssl2") == 0)
off|=SSL_OP_NO_SSLv2;
#ifndef OPENSSL_NO_TLSEXT
else if (strcmp(*argv,"-no_ticket") == 0)
{ off|=SSL_OP_NO_TICKET; }
#endif
else if (strcmp(*argv,"-cutthrough") == 0)
cutthrough=1;
else if (strcmp(*argv,"-serverpref") == 0)
off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
else if (strcmp(*argv,"-legacy_renegotiation") == 0)
off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
else if (strcmp(*argv,"-legacy_server_connect") == 0)
{ off|=SSL_OP_LEGACY_SERVER_CONNECT; }
else if (strcmp(*argv,"-no_legacy_server_connect") == 0)
{ clr|=SSL_OP_LEGACY_SERVER_CONNECT; }
else if (strcmp(*argv,"-cipher") == 0)
{
if (--argc < 1) goto bad;
cipher= *(++argv);
}
#ifdef FIONBIO
else if (strcmp(*argv,"-nbio") == 0)
{ c_nbio=1; }
#endif
else if (strcmp(*argv,"-starttls") == 0)
{
if (--argc < 1) goto bad;
++argv;
if (strcmp(*argv,"smtp") == 0)
starttls_proto = PROTO_SMTP;
else if (strcmp(*argv,"pop3") == 0)
starttls_proto = PROTO_POP3;
else if (strcmp(*argv,"imap") == 0)
starttls_proto = PROTO_IMAP;
else if (strcmp(*argv,"ftp") == 0)
starttls_proto = PROTO_FTP;
else if (strcmp(*argv, "xmpp") == 0)
starttls_proto = PROTO_XMPP;
else
goto bad;
}
#ifndef OPENSSL_NO_ENGINE
else if (strcmp(*argv,"-engine") == 0)
{
if (--argc < 1) goto bad;
engine_id = *(++argv);
}
else if (strcmp(*argv,"-ssl_client_engine") == 0)
{
if (--argc < 1) goto bad;
ssl_client_engine_id = *(++argv);
}
#endif
else if (strcmp(*argv,"-rand") == 0)
{
if (--argc < 1) goto bad;
inrand= *(++argv);
}
#ifndef OPENSSL_NO_TLSEXT
else if (strcmp(*argv,"-servername") == 0)
{
if (--argc < 1) goto bad;
servername= *(++argv);
/* meth=TLSv1_client_method(); */
}
#endif
#ifndef OPENSSL_NO_JPAKE
else if (strcmp(*argv,"-jpake") == 0)
{
if (--argc < 1) goto bad;
jpake_secret = *++argv;
}
#endif
else
{
BIO_printf(bio_err,"unknown option %s\n",*argv);
badop=1;
break;
}
argc--;
argv++;
}
if (badop)
{
bad:
sc_usage();
goto end;
}
OpenSSL_add_ssl_algorithms();
SSL_load_error_strings();
#ifndef OPENSSL_NO_ENGINE
e = setup_engine(bio_err, engine_id, 1);
if (ssl_client_engine_id)
{
ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
if (!ssl_client_engine)
{
BIO_printf(bio_err,
"Error getting client auth engine\n");
goto end;
}
}
#endif
if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
{
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
if (key_file == NULL)
key_file = cert_file;
if (key_file)
{
key = load_key(bio_err, key_file, key_format, 0, pass, e,
"client certificate private key file");
if (!key)
{
ERR_print_errors(bio_err);
goto end;
}
}
if (cert_file)
{
cert = load_cert(bio_err,cert_file,cert_format,
NULL, e, "client certificate file");
if (!cert)
{
ERR_print_errors(bio_err);
goto end;
}
}
if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
&& !RAND_status())
{
BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
}
if (inrand != NULL)
BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
app_RAND_load_files(inrand));
if (bio_c_out == NULL)
{
if (c_quiet && !c_debug && !c_msg)
{
bio_c_out=BIO_new(BIO_s_null());
}
else
{
if (bio_c_out == NULL)
bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
}
}
ctx=SSL_CTX_new(meth);
if (ctx == NULL)
{
ERR_print_errors(bio_err);
goto end;
}
#ifndef OPENSSL_NO_ENGINE
if (ssl_client_engine)
{
if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
{
BIO_puts(bio_err, "Error setting client auth engine\n");
ERR_print_errors(bio_err);
ENGINE_free(ssl_client_engine);
goto end;
}
ENGINE_free(ssl_client_engine);
}
#endif
if (bugs)
SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
else
SSL_CTX_set_options(ctx,off);
if (clr)
SSL_CTX_clear_options(ctx, clr);
/* DTLS: partial reads end up discarding unread UDP bytes :-(
* Setting read ahead solves this problem.
*/
if (sock_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
/* Enable handshake cutthrough for client connections using
* strong ciphers. */
if (cutthrough)
{
int ssl_mode = SSL_CTX_get_mode(ctx);
ssl_mode |= SSL_MODE_HANDSHAKE_CUTTHROUGH;
SSL_CTX_set_mode(ctx, ssl_mode);
}
if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
if (cipher != NULL)
if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
BIO_printf(bio_err,"error setting cipher list\n");
ERR_print_errors(bio_err);
goto end;
}
#if 0
else
SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
#endif
SSL_CTX_set_verify(ctx,verify,verify_callback);
if (!set_cert_key_stuff(ctx,cert,key))
goto end;
if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
(!SSL_CTX_set_default_verify_paths(ctx)))
{
/* BIO_printf(bio_err,"error setting default verify locations\n"); */
ERR_print_errors(bio_err);
/* goto end; */
}
store = SSL_CTX_get_cert_store(ctx);
X509_STORE_set_flags(store, vflags);
#ifndef OPENSSL_NO_TLSEXT
if (servername != NULL)
{
tlsextcbp.biodebug = bio_err;
SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
}
#endif
con=SSL_new(ctx);
if (sess_in)
{
SSL_SESSION *sess;
BIO *stmp = BIO_new_file(sess_in, "r");
if (!stmp)
{
BIO_printf(bio_err, "Can't open session file %s\n",
sess_in);
ERR_print_errors(bio_err);
goto end;
}
sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
BIO_free(stmp);
if (!sess)
{
BIO_printf(bio_err, "Can't open session file %s\n",
sess_in);
ERR_print_errors(bio_err);
goto end;
}
SSL_set_session(con, sess);
SSL_SESSION_free(sess);
}
#ifndef OPENSSL_NO_TLSEXT
if (servername != NULL)
{
if (!SSL_set_tlsext_host_name(con,servername))
{
BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
ERR_print_errors(bio_err);
goto end;
}
}
#endif
#ifndef OPENSSL_NO_KRB5
if (con && (con->kssl_ctx = kssl_ctx_new()) != NULL)
{
kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
}
#endif /* OPENSSL_NO_KRB5 */
/* SSL_set_cipher_list(con,"RC4-MD5"); */
re_start:
if (init_client(&s,host,port,sock_type) == 0)
{
BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
SHUTDOWN(s);
goto end;
}
BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
#ifdef FIONBIO
if (c_nbio)
{
unsigned long l=1;
BIO_printf(bio_c_out,"turning on non blocking io\n");
if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
{
ERR_print_errors(bio_err);
goto end;
}
}
#endif
if (c_Pause & 0x01) con->debug=1;
if ( SSL_version(con) == DTLS1_VERSION)
{
sbio=BIO_new_dgram(s,BIO_NOCLOSE);
if (getsockname(s, &peer, (void *)&peerlen) < 0)
{
BIO_printf(bio_err, "getsockname:errno=%d\n",
get_last_socket_error());
SHUTDOWN(s);
goto end;
}
(void)BIO_ctrl_set_connected(sbio, 1, &peer);
if ( enable_timeouts)
{
timeout.tv_sec = 0;
timeout.tv_usec = DGRAM_RCV_TIMEOUT;
BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
timeout.tv_sec = 0;
timeout.tv_usec = DGRAM_SND_TIMEOUT;
BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
}
if (socket_mtu > 28)
{
SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
SSL_set_mtu(con, socket_mtu - 28);
}
else
/* want to do MTU discovery */
BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
}
else
sbio=BIO_new_socket(s,BIO_NOCLOSE);
if (nbio_test)
{
BIO *test;
test=BIO_new(BIO_f_nbio_test());
sbio=BIO_push(test,sbio);
}
if (c_debug)
{
con->debug=1;
BIO_set_callback(sbio,bio_dump_callback);
BIO_set_callback_arg(sbio,(char *)bio_c_out);
}
if (c_msg)
{
SSL_set_msg_callback(con, msg_cb);
SSL_set_msg_callback_arg(con, bio_c_out);
}
#ifndef OPENSSL_NO_TLSEXT
if (c_tlsextdebug)
{
SSL_set_tlsext_debug_callback(con, tlsext_cb);
SSL_set_tlsext_debug_arg(con, bio_c_out);
}
if (c_status_req)
{
SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
#if 0
{
STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
OCSP_RESPID *id = OCSP_RESPID_new();
id->value.byKey = ASN1_OCTET_STRING_new();
id->type = V_OCSP_RESPID_KEY;
ASN1_STRING_set(id->value.byKey, "Hello World", -1);
sk_OCSP_RESPID_push(ids, id);
SSL_set_tlsext_status_ids(con, ids);
}
#endif
}
#endif
#ifndef OPENSSL_NO_JPAKE
if (jpake_secret)
jpake_client_auth(bio_c_out, sbio, jpake_secret);
#endif
SSL_set_bio(con,sbio,sbio);
SSL_set_connect_state(con);
/* ok, lets connect */
width=SSL_get_fd(con)+1;
read_tty=1;
write_tty=0;
tty_on=0;
read_ssl=1;
write_ssl=1;
cbuf_len=0;
cbuf_off=0;
sbuf_len=0;
sbuf_off=0;
/* This is an ugly hack that does a lot of assumptions */
/* We do have to handle multi-line responses which may come
in a single packet or not. We therefore have to use
BIO_gets() which does need a buffering BIO. So during
the initial chitchat we do push a buffering BIO into the
chain that is removed again later on to not disturb the
rest of the s_client operation. */
if (starttls_proto == PROTO_SMTP)
{
int foundit=0;
BIO *fbio = BIO_new(BIO_f_buffer());
BIO_push(fbio, sbio);
/* wait for multi-line response to end from SMTP */
do
{
mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
}
while (mbuf_len>3 && mbuf[3]=='-');
/* STARTTLS command requires EHLO... */
BIO_printf(fbio,"EHLO openssl.client.net\r\n");
(void)BIO_flush(fbio);
/* wait for multi-line response to end EHLO SMTP response */
do
{
mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
if (strstr(mbuf,"STARTTLS"))
foundit=1;
}
while (mbuf_len>3 && mbuf[3]=='-');
(void)BIO_flush(fbio);
BIO_pop(fbio);
BIO_free(fbio);
if (!foundit)
BIO_printf(bio_err,
"didn't found starttls in server response,"
" try anyway...\n");
BIO_printf(sbio,"STARTTLS\r\n");
BIO_read(sbio,sbuf,BUFSIZZ);
}
else if (starttls_proto == PROTO_POP3)
{
BIO_read(sbio,mbuf,BUFSIZZ);
BIO_printf(sbio,"STLS\r\n");
BIO_read(sbio,sbuf,BUFSIZZ);
}
else if (starttls_proto == PROTO_IMAP)
{
int foundit=0;
BIO *fbio = BIO_new(BIO_f_buffer());
BIO_push(fbio, sbio);
BIO_gets(fbio,mbuf,BUFSIZZ);
/* STARTTLS command requires CAPABILITY... */
BIO_printf(fbio,". CAPABILITY\r\n");
(void)BIO_flush(fbio);
/* wait for multi-line CAPABILITY response */
do
{
mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
if (strstr(mbuf,"STARTTLS"))
foundit=1;
}
while (mbuf_len>3 && mbuf[0]!='.');
(void)BIO_flush(fbio);
BIO_pop(fbio);
BIO_free(fbio);
if (!foundit)
BIO_printf(bio_err,
"didn't found STARTTLS in server response,"
" try anyway...\n");
BIO_printf(sbio,". STARTTLS\r\n");
BIO_read(sbio,sbuf,BUFSIZZ);
}
else if (starttls_proto == PROTO_FTP)
{
BIO *fbio = BIO_new(BIO_f_buffer());
BIO_push(fbio, sbio);
/* wait for multi-line response to end from FTP */
do
{
mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
}
while (mbuf_len>3 && mbuf[3]=='-');
(void)BIO_flush(fbio);
BIO_pop(fbio);
BIO_free(fbio);
BIO_printf(sbio,"AUTH TLS\r\n");
BIO_read(sbio,sbuf,BUFSIZZ);
}
if (starttls_proto == PROTO_XMPP)
{
int seen = 0;
BIO_printf(sbio,"<stream:stream "
"xmlns:stream='http://etherx.jabber.org/streams' "
"xmlns='jabber:client' to='%s' version='1.0'>", host);
seen = BIO_read(sbio,mbuf,BUFSIZZ);
mbuf[seen] = 0;
while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
{
if (strstr(mbuf, "/stream:features>"))
goto shut;
seen = BIO_read(sbio,mbuf,BUFSIZZ);
mbuf[seen] = 0;
}
BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
seen = BIO_read(sbio,sbuf,BUFSIZZ);
sbuf[seen] = 0;
if (!strstr(sbuf, "<proceed"))
goto shut;
mbuf[0] = 0;
}
for (;;)
{
FD_ZERO(&readfds);
FD_ZERO(&writefds);
if ((SSL_version(con) == DTLS1_VERSION) &&
DTLSv1_get_timeout(con, &timeout))
timeoutp = &timeout;
else
timeoutp = NULL;
if (SSL_in_init(con) && !SSL_total_renegotiations(con))
{
in_init=1;
tty_on=0;
}
else
{
tty_on=1;
if (in_init)
{
in_init=0;
if (sess_out)
{
BIO *stmp = BIO_new_file(sess_out, "w");
if (stmp)
{
PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
BIO_free(stmp);
}
else
BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
}
print_stuff(bio_c_out,con,full_log);
if (full_log > 0) full_log--;
if (starttls_proto)
{
BIO_printf(bio_err,"%s",mbuf);
/* We don't need to know any more */
starttls_proto = PROTO_OFF;
}
if (reconnect)
{
reconnect--;
BIO_printf(bio_c_out,"drop connection and then reconnect\n");
SSL_shutdown(con);
SSL_set_connect_state(con);
SHUTDOWN(SSL_get_fd(con));
goto re_start;
}
}
}
ssl_pending = read_ssl && SSL_pending(con);
if (!ssl_pending)
{
#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
if (tty_on)
{
if (read_tty) FD_SET(fileno(stdin),&readfds);
if (write_tty) FD_SET(fileno(stdout),&writefds);
}
if (read_ssl)
FD_SET(SSL_get_fd(con),&readfds);
if (write_ssl)
FD_SET(SSL_get_fd(con),&writefds);
#else
if(!tty_on || !write_tty) {
if (read_ssl)
FD_SET(SSL_get_fd(con),&readfds);
if (write_ssl)
FD_SET(SSL_get_fd(con),&writefds);
}
#endif
/* printf("mode tty(%d %d%d) ssl(%d%d)\n",
tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
/* Note: under VMS with SOCKETSHR the second parameter
* is currently of type (int *) whereas under other
* systems it is (void *) if you don't have a cast it
* will choke the compiler: if you do have a cast then
* you can either go for (int *) or (void *).
*/
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
/* Under Windows/DOS we make the assumption that we can
* always write to the tty: therefore if we need to
* write to the tty we just fall through. Otherwise
* we timeout the select every second and see if there
* are any keypresses. Note: this is a hack, in a proper
* Windows application we wouldn't do this.
*/
i=0;
if(!write_tty) {
if(read_tty) {
tv.tv_sec = 1;
tv.tv_usec = 0;
i=select(width,(void *)&readfds,(void *)&writefds,
NULL,&tv);
#if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
if(!i && (!_kbhit() || !read_tty) ) continue;
#else
if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
#endif
} else i=select(width,(void *)&readfds,(void *)&writefds,
NULL,timeoutp);
}
#elif defined(OPENSSL_SYS_NETWARE)
if(!write_tty) {
if(read_tty) {
tv.tv_sec = 1;
tv.tv_usec = 0;
i=select(width,(void *)&readfds,(void *)&writefds,
NULL,&tv);
} else i=select(width,(void *)&readfds,(void *)&writefds,
NULL,timeoutp);
}
#else
i=select(width,(void *)&readfds,(void *)&writefds,
NULL,timeoutp);
#endif
if ( i < 0)
{
BIO_printf(bio_err,"bad select %d\n",
get_last_socket_error());
goto shut;
/* goto end; */
}
}
if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
{
BIO_printf(bio_err,"TIMEOUT occured\n");
}
if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
{
k=SSL_write(con,&(cbuf[cbuf_off]),
(unsigned int)cbuf_len);
switch (SSL_get_error(con,k))
{
case SSL_ERROR_NONE:
cbuf_off+=k;
cbuf_len-=k;
if (k <= 0) goto end;
/* we have done a write(con,NULL,0); */
if (cbuf_len <= 0)
{
read_tty=1;
write_ssl=0;
}
else /* if (cbuf_len > 0) */
{
read_tty=0;
write_ssl=1;
}
break;
case SSL_ERROR_WANT_WRITE:
BIO_printf(bio_c_out,"write W BLOCK\n");
write_ssl=1;
read_tty=0;
break;
case SSL_ERROR_WANT_READ:
BIO_printf(bio_c_out,"write R BLOCK\n");
write_tty=0;
read_ssl=1;
write_ssl=0;
break;
case SSL_ERROR_WANT_X509_LOOKUP:
BIO_printf(bio_c_out,"write X BLOCK\n");
break;
case SSL_ERROR_ZERO_RETURN:
if (cbuf_len != 0)
{
BIO_printf(bio_c_out,"shutdown\n");
goto shut;
}
else
{
read_tty=1;
write_ssl=0;
break;
}
case SSL_ERROR_SYSCALL:
if ((k != 0) || (cbuf_len != 0))
{
BIO_printf(bio_err,"write:errno=%d\n",
get_last_socket_error());
goto shut;
}
else
{
read_tty=1;
write_ssl=0;
}
break;
case SSL_ERROR_SSL:
ERR_print_errors(bio_err);
goto shut;
}
}
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
/* Assume Windows/DOS can always write */
else if (!ssl_pending && write_tty)
#else
else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
#endif
{
#ifdef CHARSET_EBCDIC
ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
#endif
i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
if (i <= 0)
{
BIO_printf(bio_c_out,"DONE\n");
goto shut;
/* goto end; */
}
sbuf_len-=i;;
sbuf_off+=i;
if (sbuf_len <= 0)
{
read_ssl=1;
write_tty=0;
}
}
else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
{
#ifdef RENEG
{ static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
#endif
#if 1
k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
#else
/* Demo for pending and peek :-) */
k=SSL_read(con,sbuf,16);
{ char zbuf[10240];
printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
}
#endif
switch (SSL_get_error(con,k))
{
case SSL_ERROR_NONE:
if (k <= 0)
goto end;
sbuf_off=0;
sbuf_len=k;
read_ssl=0;
write_tty=1;
break;
case SSL_ERROR_WANT_WRITE:
BIO_printf(bio_c_out,"read W BLOCK\n");
write_ssl=1;
read_tty=0;
break;
case SSL_ERROR_WANT_READ:
BIO_printf(bio_c_out,"read R BLOCK\n");
write_tty=0;
read_ssl=1;
if ((read_tty == 0) && (write_ssl == 0))
write_ssl=1;
break;
case SSL_ERROR_WANT_X509_LOOKUP:
BIO_printf(bio_c_out,"read X BLOCK\n");
break;
case SSL_ERROR_SYSCALL:
BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
goto shut;
case SSL_ERROR_ZERO_RETURN:
BIO_printf(bio_c_out,"closed\n");
goto shut;
case SSL_ERROR_SSL:
ERR_print_errors(bio_err);
goto shut;
/* break; */
}
}
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
#if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
else if (_kbhit())
#else
else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
#endif
#elif defined (OPENSSL_SYS_NETWARE)
else if (_kbhit())
#else
else if (FD_ISSET(fileno(stdin),&readfds))
#endif
{
if (crlf)
{
int j, lf_num;
i=read(fileno(stdin),cbuf,BUFSIZZ/2);
lf_num = 0;
/* both loops are skipped when i <= 0 */
for (j = 0; j < i; j++)
if (cbuf[j] == '\n')
lf_num++;
for (j = i-1; j >= 0; j--)
{
cbuf[j+lf_num] = cbuf[j];
if (cbuf[j] == '\n')
{
lf_num--;
i++;
cbuf[j+lf_num] = '\r';
}
}
assert(lf_num == 0);
}
else
i=read(fileno(stdin),cbuf,BUFSIZZ);
if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
{
BIO_printf(bio_err,"DONE\n");
goto shut;
}
if ((!c_ign_eof) && (cbuf[0] == 'R'))
{
BIO_printf(bio_err,"RENEGOTIATING\n");
SSL_renegotiate(con);
cbuf_len=0;
}
else
{
cbuf_len=i;
cbuf_off=0;
#ifdef CHARSET_EBCDIC
ebcdic2ascii(cbuf, cbuf, i);
#endif
}
write_ssl=1;
read_tty=0;
}
}
shut:
SSL_shutdown(con);
SHUTDOWN(SSL_get_fd(con));
ret=0;
end:
if(prexit) print_stuff(bio_c_out,con,1);
if (con != NULL) SSL_free(con);
if (con2 != NULL) SSL_free(con2);
if (ctx != NULL) SSL_CTX_free(ctx);
if (cert)
X509_free(cert);
if (key)
EVP_PKEY_free(key);
if (pass)
OPENSSL_free(pass);
if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
if (bio_c_out != NULL)
{
BIO_free(bio_c_out);
bio_c_out=NULL;
}
apps_shutdown();
OPENSSL_EXIT(ret);
}
/* Return up to 'len' payload bytes received in 'type' records.
* 'type' is one of the following:
*
* - SSL3_RT_HANDSHAKE (when dtls1_get_message calls us)
* - SSL3_RT_CHANGE_CIPHER_SPEC (when dtls1_read_change_cipher_spec calls us)
* - SSL3_RT_APPLICATION_DATA (when dtls1_read_app_data calls us)
*
* If we don't have stored data to work from, read a DTLS record first (possibly
* multiple records if we still don't have anything to return).
*
* This function must handle any surprises the peer may have for us, such as
* Alert records (e.g. close_notify) and out of records. */
int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek) {
int al, i, ret;
unsigned int n;
SSL3_RECORD *rr;
void (*cb)(const SSL *ssl, int type, int value) = NULL;
if ((type != SSL3_RT_APPLICATION_DATA && type != SSL3_RT_HANDSHAKE &&
type != SSL3_RT_CHANGE_CIPHER_SPEC) ||
(peek && type != SSL3_RT_APPLICATION_DATA)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
return -1;
}
if (!s->in_handshake && SSL_in_init(s)) {
/* type == SSL3_RT_APPLICATION_DATA */
i = s->handshake_func(s);
if (i < 0) {
return i;
}
if (i == 0) {
OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
return -1;
}
}
start:
s->rwstate = SSL_NOTHING;
/* s->s3->rrec.type - is the type of record
* s->s3->rrec.data - data
* s->s3->rrec.off - offset into 'data' for next read
* s->s3->rrec.length - number of bytes. */
rr = &s->s3->rrec;
/* Check for timeout */
if (DTLSv1_handle_timeout(s) > 0) {
goto start;
}
/* get new packet if necessary */
if (rr->length == 0) {
ret = dtls1_get_record(s);
if (ret <= 0) {
ret = dtls1_read_failed(s, ret);
/* anything other than a timeout is an error */
if (ret <= 0) {
return ret;
} else {
goto start;
}
}
}
/* we now have a packet which can be read and processed */
/* If the other end has shut down, throw anything we read away (even in
* 'peek' mode) */
if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
rr->length = 0;
s->rwstate = SSL_NOTHING;
return 0;
}
if (type == rr->type) {
/* Make sure that we are not getting application data when we
* are doing a handshake for the first time. */
if (SSL_in_init(s) && (type == SSL3_RT_APPLICATION_DATA) &&
(s->aead_read_ctx == NULL)) {
/* TODO(davidben): Is this check redundant with the handshake_func
* check? */
al = SSL_AD_UNEXPECTED_MESSAGE;
OPENSSL_PUT_ERROR(SSL, SSL_R_APP_DATA_IN_HANDSHAKE);
goto f_err;
}
/* Discard empty records. */
if (rr->length == 0) {
goto start;
}
if (len <= 0) {
return len;
}
if ((unsigned int)len > rr->length) {
n = rr->length;
} else {
n = (unsigned int)len;
}
memcpy(buf, rr->data, n);
if (!peek) {
rr->length -= n;
rr->data += n;
if (rr->length == 0) {
/* The record has been consumed, so we may now clear the buffer. */
ssl_read_buffer_discard(s);
}
}
return n;
}
/* If we get here, then type != rr->type. */
/* If an alert record, process one alert out of the record. Note that we allow
* a single record to contain multiple alerts. */
if (rr->type == SSL3_RT_ALERT) {
/* Alerts may not be fragmented. */
if (rr->length < 2) {
al = SSL_AD_DECODE_ERROR;
OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ALERT);
goto f_err;
}
if (s->msg_callback) {
s->msg_callback(0, s->version, SSL3_RT_ALERT, rr->data, 2, s,
s->msg_callback_arg);
}
const uint8_t alert_level = rr->data[0];
const uint8_t alert_descr = rr->data[1];
rr->length -= 2;
rr->data += 2;
if (s->info_callback != NULL) {
cb = s->info_callback;
} else if (s->ctx->info_callback != NULL) {
cb = s->ctx->info_callback;
}
if (cb != NULL) {
uint16_t alert = (alert_level << 8) | alert_descr;
cb(s, SSL_CB_READ_ALERT, alert);
}
if (alert_level == SSL3_AL_WARNING) {
s->s3->warn_alert = alert_descr;
if (alert_descr == SSL_AD_CLOSE_NOTIFY) {
s->shutdown |= SSL_RECEIVED_SHUTDOWN;
return 0;
}
} else if (alert_level == SSL3_AL_FATAL) {
char tmp[16];
s->rwstate = SSL_NOTHING;
s->s3->fatal_alert = alert_descr;
OPENSSL_PUT_ERROR(SSL, SSL_AD_REASON_OFFSET + alert_descr);
BIO_snprintf(tmp, sizeof tmp, "%d", alert_descr);
ERR_add_error_data(2, "SSL alert number ", tmp);
s->shutdown |= SSL_RECEIVED_SHUTDOWN;
SSL_CTX_remove_session(s->ctx, s->session);
return 0;
} else {
al = SSL_AD_ILLEGAL_PARAMETER;
OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_ALERT_TYPE);
goto f_err;
}
goto start;
}
/* Cross-epoch records are discarded, but we may receive out-of-order
* application data between ChangeCipherSpec and Finished or a ChangeCipherSpec
* before the appropriate point in the handshake. Those must be silently
* discarded.
*
* However, only allow the out-of-order records in the correct epoch.
* Application data must come in the encrypted epoch, and ChangeCipherSpec in
* the unencrypted epoch (we never renegotiate). Other cases fall through and
* fail with a fatal error. */
if ((rr->type == SSL3_RT_APPLICATION_DATA && s->aead_read_ctx != NULL) ||
(rr->type == SSL3_RT_CHANGE_CIPHER_SPEC && s->aead_read_ctx == NULL)) {
rr->length = 0;
goto start;
}
if (rr->type == SSL3_RT_HANDSHAKE) {
if (type != SSL3_RT_APPLICATION_DATA) {
/* Out-of-order handshake record while looking for ChangeCipherSpec. Drop
* it silently. */
assert(type == SSL3_RT_CHANGE_CIPHER_SPEC);
rr->length = 0;
goto start;
}
/* Parse the first fragment header to determine if this is a pre-CCS or
* post-CCS handshake record. DTLS resets handshake message numbers on each
* handshake, so renegotiations and retransmissions are ambiguous. */
if (rr->length < DTLS1_HM_HEADER_LENGTH) {
al = SSL_AD_DECODE_ERROR;
OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_HANDSHAKE_RECORD);
goto f_err;
}
struct hm_header_st msg_hdr;
dtls1_get_message_header(rr->data, &msg_hdr);
if (msg_hdr.type == SSL3_MT_FINISHED) {
if (msg_hdr.frag_off == 0) {
/* Retransmit our last flight of messages. If the peer sends the second
* Finished, they may not have received ours. Only do this for the
* first fragment, in case the Finished was fragmented. */
if (dtls1_check_timeout_num(s) < 0) {
return -1;
}
dtls1_retransmit_buffered_messages(s);
}
rr->length = 0;
goto start;
}
/* Otherwise, this is a pre-CCS handshake message from an unsupported
* renegotiation attempt. Fall through to the error path. */
}
al = SSL_AD_UNEXPECTED_MESSAGE;
OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
f_err:
ssl3_send_alert(s, SSL3_AL_FATAL, al);
return -1;
}
int
s_client_main(int argc, char **argv)
{
unsigned int off = 0, clr = 0;
SSL *con = NULL;
int s, k, width, state = 0, af = AF_UNSPEC;
char *cbuf = NULL, *sbuf = NULL, *mbuf = NULL;
int cbuf_len, cbuf_off;
int sbuf_len, sbuf_off;
fd_set readfds, writefds;
char *port = PORT_STR;
int full_log = 1;
char *host = SSL_HOST_NAME;
char *cert_file = NULL, *key_file = NULL;
int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
char *passarg = NULL, *pass = NULL;
X509 *cert = NULL;
EVP_PKEY *key = NULL;
char *CApath = NULL, *CAfile = NULL, *cipher = NULL;
int reconnect = 0, badop = 0, verify = SSL_VERIFY_NONE, bugs = 0;
int crlf = 0;
int write_tty, read_tty, write_ssl, read_ssl, tty_on, ssl_pending;
SSL_CTX *ctx = NULL;
int ret = 1, in_init = 1, i, nbio_test = 0;
int starttls_proto = PROTO_OFF;
int prexit = 0;
X509_VERIFY_PARAM *vpm = NULL;
int badarg = 0;
const SSL_METHOD *meth = NULL;
int socket_type = SOCK_STREAM;
BIO *sbio;
int mbuf_len = 0;
struct timeval timeout, *timeoutp;
const char *errstr = NULL;
#ifndef OPENSSL_NO_ENGINE
char *engine_id = NULL;
char *ssl_client_engine_id = NULL;
ENGINE *ssl_client_engine = NULL;
#endif
ENGINE *e = NULL;
#ifndef OPENSSL_NO_TLSEXT
char *servername = NULL;
tlsextctx tlsextcbp =
{NULL, 0};
#ifndef OPENSSL_NO_NEXTPROTONEG
const char *next_proto_neg_in = NULL;
#endif
#endif
char *sess_in = NULL;
char *sess_out = NULL;
struct sockaddr peer;
int peerlen = sizeof(peer);
int enable_timeouts = 0;
long socket_mtu = 0;
meth = SSLv23_client_method();
c_Pause = 0;
c_quiet = 0;
c_ign_eof = 0;
c_debug = 0;
c_msg = 0;
c_showcerts = 0;
if (((cbuf = malloc(BUFSIZZ)) == NULL) ||
((sbuf = malloc(BUFSIZZ)) == NULL) ||
((mbuf = malloc(BUFSIZZ + 1)) == NULL)) { /* NUL byte */
BIO_printf(bio_err, "out of memory\n");
goto end;
}
verify_depth = 0;
verify_error = X509_V_OK;
c_nbio = 0;
argc--;
argv++;
while (argc >= 1) {
if (strcmp(*argv, "-host") == 0) {
if (--argc < 1)
goto bad;
host = *(++argv);
} else if (strcmp(*argv, "-port") == 0) {
if (--argc < 1)
goto bad;
port = *(++argv);
if (port == NULL || *port == '\0')
goto bad;
} else if (strcmp(*argv, "-connect") == 0) {
if (--argc < 1)
goto bad;
if (!extract_host_port(*(++argv), &host, NULL, &port))
goto bad;
} else if (strcmp(*argv, "-verify") == 0) {
verify = SSL_VERIFY_PEER;
if (--argc < 1)
goto bad;
verify_depth = strtonum(*(++argv), 0, INT_MAX, &errstr);
if (errstr)
goto bad;
BIO_printf(bio_err, "verify depth is %d\n", verify_depth);
} else if (strcmp(*argv, "-cert") == 0) {
if (--argc < 1)
goto bad;
cert_file = *(++argv);
} else if (strcmp(*argv, "-sess_out") == 0) {
if (--argc < 1)
goto bad;
sess_out = *(++argv);
} else if (strcmp(*argv, "-sess_in") == 0) {
if (--argc < 1)
goto bad;
sess_in = *(++argv);
} else if (strcmp(*argv, "-certform") == 0) {
if (--argc < 1)
goto bad;
cert_format = str2fmt(*(++argv));
} else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm)) {
if (badarg)
goto bad;
continue;
} else if (strcmp(*argv, "-verify_return_error") == 0)
verify_return_error = 1;
else if (strcmp(*argv, "-prexit") == 0)
prexit = 1;
else if (strcmp(*argv, "-crlf") == 0)
crlf = 1;
else if (strcmp(*argv, "-quiet") == 0) {
c_quiet = 1;
c_ign_eof = 1;
} else if (strcmp(*argv, "-ign_eof") == 0)
c_ign_eof = 1;
else if (strcmp(*argv, "-no_ign_eof") == 0)
c_ign_eof = 0;
else if (strcmp(*argv, "-pause") == 0)
c_Pause = 1;
else if (strcmp(*argv, "-debug") == 0)
c_debug = 1;
#ifndef OPENSSL_NO_TLSEXT
else if (strcmp(*argv, "-tlsextdebug") == 0)
c_tlsextdebug = 1;
else if (strcmp(*argv, "-status") == 0)
c_status_req = 1;
#endif
else if (strcmp(*argv, "-msg") == 0)
c_msg = 1;
else if (strcmp(*argv, "-showcerts") == 0)
c_showcerts = 1;
else if (strcmp(*argv, "-nbio_test") == 0)
nbio_test = 1;
else if (strcmp(*argv, "-state") == 0)
state = 1;
else if (strcmp(*argv, "-ssl3") == 0)
meth = SSLv3_client_method();
else if (strcmp(*argv, "-tls1_2") == 0)
meth = TLSv1_2_client_method();
else if (strcmp(*argv, "-tls1_1") == 0)
meth = TLSv1_1_client_method();
else if (strcmp(*argv, "-tls1") == 0)
meth = TLSv1_client_method();
#ifndef OPENSSL_NO_DTLS1
else if (strcmp(*argv, "-dtls1") == 0) {
meth = DTLSv1_client_method();
socket_type = SOCK_DGRAM;
} else if (strcmp(*argv, "-timeout") == 0)
enable_timeouts = 1;
else if (strcmp(*argv, "-mtu") == 0) {
if (--argc < 1)
goto bad;
socket_mtu = strtonum(*(++argv), 0, LONG_MAX, &errstr);
if (errstr)
goto bad;
}
#endif
else if (strcmp(*argv, "-bugs") == 0)
bugs = 1;
else if (strcmp(*argv, "-keyform") == 0) {
if (--argc < 1)
goto bad;
key_format = str2fmt(*(++argv));
} else if (strcmp(*argv, "-pass") == 0) {
if (--argc < 1)
goto bad;
passarg = *(++argv);
} else if (strcmp(*argv, "-key") == 0) {
if (--argc < 1)
goto bad;
key_file = *(++argv);
} else if (strcmp(*argv, "-reconnect") == 0) {
reconnect = 5;
} else if (strcmp(*argv, "-CApath") == 0) {
if (--argc < 1)
goto bad;
CApath = *(++argv);
} else if (strcmp(*argv, "-CAfile") == 0) {
if (--argc < 1)
goto bad;
CAfile = *(++argv);
} else if (strcmp(*argv, "-no_tls1_2") == 0)
off |= SSL_OP_NO_TLSv1_2;
else if (strcmp(*argv, "-no_tls1_1") == 0)
off |= SSL_OP_NO_TLSv1_1;
else if (strcmp(*argv, "-no_tls1") == 0)
off |= SSL_OP_NO_TLSv1;
else if (strcmp(*argv, "-no_ssl3") == 0)
off |= SSL_OP_NO_SSLv3;
else if (strcmp(*argv, "-no_ssl2") == 0)
off |= SSL_OP_NO_SSLv2;
else if (strcmp(*argv, "-no_comp") == 0) {
off |= SSL_OP_NO_COMPRESSION;
}
#ifndef OPENSSL_NO_TLSEXT
else if (strcmp(*argv, "-no_ticket") == 0) {
off |= SSL_OP_NO_TICKET;
}
#ifndef OPENSSL_NO_NEXTPROTONEG
else if (strcmp(*argv, "-nextprotoneg") == 0) {
if (--argc < 1)
goto bad;
next_proto_neg_in = *(++argv);
}
#endif
#endif
else if (strcmp(*argv, "-serverpref") == 0)
off |= SSL_OP_CIPHER_SERVER_PREFERENCE;
else if (strcmp(*argv, "-legacy_renegotiation") == 0)
; /* no-op */
else if (strcmp(*argv, "-legacy_server_connect") == 0) {
off |= SSL_OP_LEGACY_SERVER_CONNECT;
} else if (strcmp(*argv, "-no_legacy_server_connect") == 0) {
clr |= SSL_OP_LEGACY_SERVER_CONNECT;
} else if (strcmp(*argv, "-cipher") == 0) {
if (--argc < 1)
goto bad;
cipher = *(++argv);
}
else if (strcmp(*argv, "-nbio") == 0) {
c_nbio = 1;
}
else if (strcmp(*argv, "-starttls") == 0) {
if (--argc < 1)
goto bad;
++argv;
if (strcmp(*argv, "smtp") == 0)
starttls_proto = PROTO_SMTP;
else if (strcmp(*argv, "lmtp") == 0)
starttls_proto = PROTO_LMTP;
else if (strcmp(*argv, "pop3") == 0)
starttls_proto = PROTO_POP3;
else if (strcmp(*argv, "imap") == 0)
starttls_proto = PROTO_IMAP;
else if (strcmp(*argv, "ftp") == 0)
starttls_proto = PROTO_FTP;
else if (strcmp(*argv, "xmpp") == 0)
starttls_proto = PROTO_XMPP;
else
goto bad;
}
#ifndef OPENSSL_NO_ENGINE
else if (strcmp(*argv, "-engine") == 0) {
if (--argc < 1)
goto bad;
engine_id = *(++argv);
} else if (strcmp(*argv, "-ssl_client_engine") == 0) {
if (--argc < 1)
goto bad;
ssl_client_engine_id = *(++argv);
}
#endif
else if (strcmp(*argv, "-4") == 0) {
af = AF_INET;
} else if (strcmp(*argv, "-6") == 0) {
af = AF_INET6;
}
#ifndef OPENSSL_NO_TLSEXT
else if (strcmp(*argv, "-servername") == 0) {
if (--argc < 1)
goto bad;
servername = *(++argv);
/* meth=TLSv1_client_method(); */
}
#endif
#ifndef OPENSSL_NO_SRTP
else if (strcmp(*argv, "-use_srtp") == 0) {
if (--argc < 1)
goto bad;
srtp_profiles = *(++argv);
}
#endif
else if (strcmp(*argv, "-keymatexport") == 0) {
if (--argc < 1)
goto bad;
keymatexportlabel = *(++argv);
} else if (strcmp(*argv, "-keymatexportlen") == 0) {
const char *errstr;
if (--argc < 1)
goto bad;
keymatexportlen = strtonum(*(++argv), 1, INT_MAX, &errstr);
if (errstr)
goto bad;
} else {
BIO_printf(bio_err, "unknown option %s\n", *argv);
badop = 1;
break;
}
argc--;
argv++;
}
if (badop) {
bad:
if (errstr)
BIO_printf(bio_err, "invalid argument %s: %s\n",
*argv, errstr);
else
sc_usage();
goto end;
}
#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
next_proto.status = -1;
if (next_proto_neg_in) {
next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
if (next_proto.data == NULL) {
BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
goto end;
}
} else
next_proto.data = NULL;
#endif
#ifndef OPENSSL_NO_ENGINE
e = setup_engine(bio_err, engine_id, 1);
if (ssl_client_engine_id) {
ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
if (!ssl_client_engine) {
BIO_printf(bio_err,
"Error getting client auth engine\n");
goto end;
}
}
#endif
if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
if (key_file == NULL)
key_file = cert_file;
if (key_file) {
key = load_key(bio_err, key_file, key_format, 0, pass, e,
"client certificate private key file");
if (!key) {
ERR_print_errors(bio_err);
goto end;
}
}
if (cert_file) {
cert = load_cert(bio_err, cert_file, cert_format,
NULL, e, "client certificate file");
if (!cert) {
ERR_print_errors(bio_err);
goto end;
}
}
if (bio_c_out == NULL) {
if (c_quiet && !c_debug && !c_msg) {
bio_c_out = BIO_new(BIO_s_null());
} else {
if (bio_c_out == NULL)
bio_c_out = BIO_new_fp(stdout, BIO_NOCLOSE);
}
}
ctx = SSL_CTX_new(meth);
if (ctx == NULL) {
ERR_print_errors(bio_err);
goto end;
}
if (vpm)
SSL_CTX_set1_param(ctx, vpm);
#ifndef OPENSSL_NO_ENGINE
if (ssl_client_engine) {
if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine)) {
BIO_puts(bio_err, "Error setting client auth engine\n");
ERR_print_errors(bio_err);
ENGINE_free(ssl_client_engine);
goto end;
}
ENGINE_free(ssl_client_engine);
}
#endif
#ifndef OPENSSL_NO_SRTP
if (srtp_profiles != NULL)
SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
#endif
if (bugs)
SSL_CTX_set_options(ctx, SSL_OP_ALL | off);
else
SSL_CTX_set_options(ctx, off);
if (clr)
SSL_CTX_clear_options(ctx, clr);
/*
* DTLS: partial reads end up discarding unread UDP bytes :-( Setting
* read ahead solves this problem.
*/
if (socket_type == SOCK_DGRAM)
SSL_CTX_set_read_ahead(ctx, 1);
#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
if (next_proto.data)
SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
#endif
if (state)
SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
if (cipher != NULL)
if (!SSL_CTX_set_cipher_list(ctx, cipher)) {
BIO_printf(bio_err, "error setting cipher list\n");
ERR_print_errors(bio_err);
goto end;
}
SSL_CTX_set_verify(ctx, verify, verify_callback);
if (!set_cert_key_stuff(ctx, cert, key))
goto end;
if ((!SSL_CTX_load_verify_locations(ctx, CAfile, CApath)) ||
(!SSL_CTX_set_default_verify_paths(ctx))) {
/*
* BIO_printf(bio_err,"error setting default verify
* locations\n");
*/
ERR_print_errors(bio_err);
/* goto end; */
}
#ifndef OPENSSL_NO_TLSEXT
if (servername != NULL) {
tlsextcbp.biodebug = bio_err;
SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
}
#endif
con = SSL_new(ctx);
if (sess_in) {
SSL_SESSION *sess;
BIO *stmp = BIO_new_file(sess_in, "r");
if (!stmp) {
BIO_printf(bio_err, "Can't open session file %s\n",
sess_in);
ERR_print_errors(bio_err);
goto end;
}
sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
BIO_free(stmp);
if (!sess) {
BIO_printf(bio_err, "Can't open session file %s\n",
sess_in);
ERR_print_errors(bio_err);
goto end;
}
SSL_set_session(con, sess);
SSL_SESSION_free(sess);
}
#ifndef OPENSSL_NO_TLSEXT
if (servername != NULL) {
if (!SSL_set_tlsext_host_name(con, servername)) {
BIO_printf(bio_err, "Unable to set TLS servername extension.\n");
ERR_print_errors(bio_err);
goto end;
}
}
#endif
/* SSL_set_cipher_list(con,"RC4-MD5"); */
re_start:
if (init_client(&s, host, port, socket_type, af) == 0) {
BIO_printf(bio_err, "connect:errno=%d\n", errno);
shutdown(s, SHUT_RD);
close(s);
goto end;
}
BIO_printf(bio_c_out, "CONNECTED(%08X)\n", s);
if (c_nbio) {
unsigned long l = 1;
BIO_printf(bio_c_out, "turning on non blocking io\n");
if (BIO_socket_ioctl(s, FIONBIO, &l) < 0) {
ERR_print_errors(bio_err);
goto end;
}
}
if (c_Pause & 0x01)
SSL_set_debug(con, 1);
if (SSL_version(con) == DTLS1_VERSION) {
sbio = BIO_new_dgram(s, BIO_NOCLOSE);
if (getsockname(s, &peer, (void *) &peerlen) < 0) {
BIO_printf(bio_err, "getsockname:errno=%d\n",
errno);
shutdown(s, SHUT_RD);
close(s);
goto end;
}
(void) BIO_ctrl_set_connected(sbio, 1, &peer);
if (enable_timeouts) {
timeout.tv_sec = 0;
timeout.tv_usec = DGRAM_RCV_TIMEOUT;
BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
timeout.tv_sec = 0;
timeout.tv_usec = DGRAM_SND_TIMEOUT;
BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
}
if (socket_mtu > 28) {
SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
SSL_set_mtu(con, socket_mtu - 28);
} else
/* want to do MTU discovery */
BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
} else
sbio = BIO_new_socket(s, BIO_NOCLOSE);
if (nbio_test) {
BIO *test;
test = BIO_new(BIO_f_nbio_test());
sbio = BIO_push(test, sbio);
}
if (c_debug) {
SSL_set_debug(con, 1);
BIO_set_callback(sbio, bio_dump_callback);
BIO_set_callback_arg(sbio, (char *) bio_c_out);
}
if (c_msg) {
SSL_set_msg_callback(con, msg_cb);
SSL_set_msg_callback_arg(con, bio_c_out);
}
#ifndef OPENSSL_NO_TLSEXT
if (c_tlsextdebug) {
SSL_set_tlsext_debug_callback(con, tlsext_cb);
SSL_set_tlsext_debug_arg(con, bio_c_out);
}
if (c_status_req) {
SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
}
#endif
SSL_set_bio(con, sbio, sbio);
SSL_set_connect_state(con);
/* ok, lets connect */
width = SSL_get_fd(con) + 1;
read_tty = 1;
write_tty = 0;
tty_on = 0;
read_ssl = 1;
write_ssl = 1;
cbuf_len = 0;
cbuf_off = 0;
sbuf_len = 0;
sbuf_off = 0;
/* This is an ugly hack that does a lot of assumptions */
/*
* We do have to handle multi-line responses which may come in a
* single packet or not. We therefore have to use BIO_gets() which
* does need a buffering BIO. So during the initial chitchat we do
* push a buffering BIO into the chain that is removed again later on
* to not disturb the rest of the s_client operation.
*/
if (starttls_proto == PROTO_SMTP || starttls_proto == PROTO_LMTP) {
int foundit = 0;
BIO *fbio = BIO_new(BIO_f_buffer());
BIO_push(fbio, sbio);
/* wait for multi-line response to end from SMTP */
do {
mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
}
while (mbuf_len > 3 && mbuf[3] == '-');
/* STARTTLS command requires EHLO... */
BIO_printf(fbio, "%cHLO openssl.client.net\r\n",
starttls_proto == PROTO_SMTP ? 'E' : 'L');
(void) BIO_flush(fbio);
/* wait for multi-line response to end EHLO SMTP response */
do {
mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
if (strstr(mbuf, "STARTTLS"))
foundit = 1;
}
while (mbuf_len > 3 && mbuf[3] == '-');
(void) BIO_flush(fbio);
BIO_pop(fbio);
BIO_free(fbio);
if (!foundit)
BIO_printf(bio_err,
"didn't found starttls in server response,"
" try anyway...\n");
BIO_printf(sbio, "STARTTLS\r\n");
BIO_read(sbio, sbuf, BUFSIZZ);
} else if (starttls_proto == PROTO_POP3) {
mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ);
if (mbuf_len == -1) {
BIO_printf(bio_err, "BIO_read failed\n");
goto end;
}
BIO_printf(sbio, "STLS\r\n");
BIO_read(sbio, sbuf, BUFSIZZ);
} else if (starttls_proto == PROTO_IMAP) {
int foundit = 0;
BIO *fbio = BIO_new(BIO_f_buffer());
BIO_push(fbio, sbio);
BIO_gets(fbio, mbuf, BUFSIZZ);
/* STARTTLS command requires CAPABILITY... */
BIO_printf(fbio, ". CAPABILITY\r\n");
(void) BIO_flush(fbio);
/* wait for multi-line CAPABILITY response */
do {
mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
if (strstr(mbuf, "STARTTLS"))
foundit = 1;
}
while (mbuf_len > 3 && mbuf[0] != '.');
(void) BIO_flush(fbio);
BIO_pop(fbio);
BIO_free(fbio);
if (!foundit)
BIO_printf(bio_err,
"didn't found STARTTLS in server response,"
" try anyway...\n");
BIO_printf(sbio, ". STARTTLS\r\n");
BIO_read(sbio, sbuf, BUFSIZZ);
} else if (starttls_proto == PROTO_FTP) {
BIO *fbio = BIO_new(BIO_f_buffer());
BIO_push(fbio, sbio);
/* wait for multi-line response to end from FTP */
do {
mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
}
while (mbuf_len > 3 && mbuf[3] == '-');
(void) BIO_flush(fbio);
BIO_pop(fbio);
BIO_free(fbio);
BIO_printf(sbio, "AUTH TLS\r\n");
BIO_read(sbio, sbuf, BUFSIZZ);
}
if (starttls_proto == PROTO_XMPP) {
int seen = 0;
BIO_printf(sbio, "<stream:stream "
"xmlns:stream='http://etherx.jabber.org/streams' "
"xmlns='jabber:client' to='%s' version='1.0'>", host);
seen = BIO_read(sbio, mbuf, BUFSIZZ);
mbuf[seen] = 0;
while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'")) {
if (strstr(mbuf, "/stream:features>"))
goto shut;
seen = BIO_read(sbio, mbuf, BUFSIZZ);
mbuf[seen] = 0;
}
BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
seen = BIO_read(sbio, sbuf, BUFSIZZ);
sbuf[seen] = 0;
if (!strstr(sbuf, "<proceed"))
goto shut;
mbuf[0] = 0;
}
for (;;) {
FD_ZERO(&readfds);
FD_ZERO(&writefds);
if ((SSL_version(con) == DTLS1_VERSION) &&
DTLSv1_get_timeout(con, &timeout))
timeoutp = &timeout;
else
timeoutp = NULL;
if (SSL_in_init(con) && !SSL_total_renegotiations(con)) {
in_init = 1;
tty_on = 0;
} else {
tty_on = 1;
if (in_init) {
in_init = 0;
if (sess_out) {
BIO *stmp = BIO_new_file(sess_out, "w");
if (stmp) {
PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
BIO_free(stmp);
} else
BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
}
print_stuff(bio_c_out, con, full_log);
if (full_log > 0)
full_log--;
if (starttls_proto) {
BIO_write(bio_err, mbuf, mbuf_len);
/* We don't need to know any more */
starttls_proto = PROTO_OFF;
}
if (reconnect) {
reconnect--;
BIO_printf(bio_c_out, "drop connection and then reconnect\n");
SSL_shutdown(con);
SSL_set_connect_state(con);
shutdown(SSL_get_fd(con), SHUT_RD);
close(SSL_get_fd(con));
goto re_start;
}
}
}
ssl_pending = read_ssl && SSL_pending(con);
/* XXX should add tests for fd_set overflow */
if (!ssl_pending) {
if (tty_on) {
if (read_tty)
FD_SET(fileno(stdin), &readfds);
if (write_tty)
FD_SET(fileno(stdout), &writefds);
}
if (read_ssl)
FD_SET(SSL_get_fd(con), &readfds);
if (write_ssl)
FD_SET(SSL_get_fd(con), &writefds);
/* printf("mode tty(%d %d%d) ssl(%d%d)\n",
tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
i = select(width, &readfds, &writefds,
NULL, timeoutp);
if (i < 0) {
BIO_printf(bio_err, "bad select %d\n",
errno);
goto shut;
/* goto end; */
}
}
if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0) {
BIO_printf(bio_err, "TIMEOUT occured\n");
}
if (!ssl_pending && FD_ISSET(SSL_get_fd(con), &writefds)) {
k = SSL_write(con, &(cbuf[cbuf_off]),
(unsigned int) cbuf_len);
switch (SSL_get_error(con, k)) {
case SSL_ERROR_NONE:
cbuf_off += k;
cbuf_len -= k;
if (k <= 0)
goto end;
/* we have done a write(con,NULL,0); */
if (cbuf_len <= 0) {
read_tty = 1;
write_ssl = 0;
} else { /* if (cbuf_len > 0) */
read_tty = 0;
write_ssl = 1;
}
break;
case SSL_ERROR_WANT_WRITE:
BIO_printf(bio_c_out, "write W BLOCK\n");
write_ssl = 1;
read_tty = 0;
break;
case SSL_ERROR_WANT_READ:
BIO_printf(bio_c_out, "write R BLOCK\n");
write_tty = 0;
read_ssl = 1;
write_ssl = 0;
break;
case SSL_ERROR_WANT_X509_LOOKUP:
BIO_printf(bio_c_out, "write X BLOCK\n");
break;
case SSL_ERROR_ZERO_RETURN:
if (cbuf_len != 0) {
BIO_printf(bio_c_out, "shutdown\n");
ret = 0;
goto shut;
} else {
read_tty = 1;
write_ssl = 0;
break;
}
case SSL_ERROR_SYSCALL:
if ((k != 0) || (cbuf_len != 0)) {
BIO_printf(bio_err, "write:errno=%d\n",
errno);
goto shut;
} else {
read_tty = 1;
write_ssl = 0;
}
break;
case SSL_ERROR_SSL:
ERR_print_errors(bio_err);
goto shut;
}
} else if (!ssl_pending && FD_ISSET(fileno(stdout), &writefds)) {
i = write(fileno(stdout), &(sbuf[sbuf_off]), sbuf_len);
if (i <= 0) {
BIO_printf(bio_c_out, "DONE\n");
ret = 0;
goto shut;
/* goto end; */
}
sbuf_len -= i;
sbuf_off += i;
if (sbuf_len <= 0) {
read_ssl = 1;
write_tty = 0;
}
} else if (ssl_pending || FD_ISSET(SSL_get_fd(con), &readfds)) {
#ifdef RENEG
{
static int iiii;
if (++iiii == 52) {
SSL_renegotiate(con);
iiii = 0;
}
}
#endif
k = SSL_read(con, sbuf, 1024 /* BUFSIZZ */ );
switch (SSL_get_error(con, k)) {
case SSL_ERROR_NONE:
if (k <= 0)
goto end;
sbuf_off = 0;
sbuf_len = k;
read_ssl = 0;
write_tty = 1;
break;
case SSL_ERROR_WANT_WRITE:
BIO_printf(bio_c_out, "read W BLOCK\n");
write_ssl = 1;
read_tty = 0;
break;
case SSL_ERROR_WANT_READ:
BIO_printf(bio_c_out, "read R BLOCK\n");
write_tty = 0;
read_ssl = 1;
if ((read_tty == 0) && (write_ssl == 0))
write_ssl = 1;
break;
case SSL_ERROR_WANT_X509_LOOKUP:
BIO_printf(bio_c_out, "read X BLOCK\n");
break;
case SSL_ERROR_SYSCALL:
ret = errno;
BIO_printf(bio_err, "read:errno=%d\n", ret);
goto shut;
case SSL_ERROR_ZERO_RETURN:
BIO_printf(bio_c_out, "closed\n");
ret = 0;
goto shut;
case SSL_ERROR_SSL:
ERR_print_errors(bio_err);
goto shut;
/* break; */
}
} else if (FD_ISSET(fileno(stdin), &readfds)) {
if (crlf) {
int j, lf_num;
i = read(fileno(stdin), cbuf, BUFSIZZ / 2);
lf_num = 0;
/* both loops are skipped when i <= 0 */
for (j = 0; j < i; j++)
if (cbuf[j] == '\n')
lf_num++;
for (j = i - 1; j >= 0; j--) {
cbuf[j + lf_num] = cbuf[j];
if (cbuf[j] == '\n') {
lf_num--;
i++;
cbuf[j + lf_num] = '\r';
}
}
assert(lf_num == 0);
} else
i = read(fileno(stdin), cbuf, BUFSIZZ);
if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q'))) {
BIO_printf(bio_err, "DONE\n");
ret = 0;
goto shut;
}
if ((!c_ign_eof) && (cbuf[0] == 'R')) {
BIO_printf(bio_err, "RENEGOTIATING\n");
SSL_renegotiate(con);
cbuf_len = 0;
} else {
cbuf_len = i;
cbuf_off = 0;
}
write_ssl = 1;
read_tty = 0;
}
}
ret = 0;
shut:
if (in_init)
print_stuff(bio_c_out, con, full_log);
SSL_shutdown(con);
shutdown(SSL_get_fd(con), SHUT_RD);
close(SSL_get_fd(con));
end:
if (con != NULL) {
if (prexit != 0)
print_stuff(bio_c_out, con, 1);
SSL_free(con);
}
#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
free(next_proto.data);
#endif
if (ctx != NULL)
SSL_CTX_free(ctx);
if (cert)
X509_free(cert);
if (key)
EVP_PKEY_free(key);
free(pass);
if (vpm)
X509_VERIFY_PARAM_free(vpm);
if (cbuf != NULL) {
OPENSSL_cleanse(cbuf, BUFSIZZ);
free(cbuf);
}
if (sbuf != NULL) {
OPENSSL_cleanse(sbuf, BUFSIZZ);
free(sbuf);
}
if (mbuf != NULL) {
OPENSSL_cleanse(mbuf, BUFSIZZ);
free(mbuf);
}
if (bio_c_out != NULL) {
BIO_free(bio_c_out);
bio_c_out = NULL;
}
return (ret);
}
int DTLSBio::connect()
{
/// call the client handshake
/// 1. Call SSL_do_handshake to start the handshake procedure
/// 2. Read the ClientHello data from the output BIO and send to external output
/// 3. Read the ServerHelloDone from external input and write it to the input BIO
/// 4. Call SSL_do_handshake again to process ServerHelloDone
/// 5. Repeat 2-4 to complete Certificate exchange
///
if (SSL_is_init_finished(_pSSL))
{
OSS_LOG_ERROR("DTLSBio::connect - SSL Handshake is already completed.");
return 0;
}
//
// Start the handshake
//
SSL_do_handshake(_pSSL);
int ret = 0;
char readBuf[DTLS_BIO_BUFFER_LEN];
int resendCount = 0;
while (!SSL_is_init_finished(_pSSL))
{
int pending = BIO_ctrl_pending(_pOutBIO);
if (pending > 0)
{
ret = BIO_read(_pOutBIO, readBuf, DTLS_BIO_BUFFER_LEN);
if (ret > 0)
{
//
// We have read the encrypted data, write it to our external output
//
ret = writeDirect(readBuf, ret);
if (ret <= 0)
{
OSS_LOG_ERROR("DTLSBio::connect - writeDirect returned " << ret);
break;
}
}
else
{
OSS_LOG_ERROR("DTLSBio::connect - BIO_read returned " << ret);
break;
}
}
//
// Read the response from the server
//
ret = readDirect(readBuf, DTLS_BIO_BUFFER_LEN);
if (ret > 0)
{
//
// We have read the response from the server
// Write it to the input BIO
//
ret = BIO_write(_pInBIO, readBuf, ret);
if (ret > 0)
{
//
// Packets are written to the IN BIO. call the handshake again to process
// the response
//
SSL_do_handshake(_pSSL);
}
else
{
OSS_LOG_ERROR("DTLSBio::connect - BIO_write returned " << ret);
break;
}
}
else
{
OSS_LOG_ERROR("DTLSBio::connect - readDirect returned " << ret);
if (ret < 0)
{
//
// This is an error. Abort immediately
//
break;
}
//
// We are not able to read any response. We will try to retransmit
//
struct timeval timeout;
if (DTLSv1_get_timeout(_pSSL, &timeout))
{
OSS::UInt64 timeout_value = timeout.tv_sec*1000 + timeout.tv_usec/1000;
if (timeout_value > 0)
{
if (resendCount > MAX_RETRY_COUNT)
{
break;
}
else
{
continue;
}
}
else
{
++resendCount;
DTLSv1_handle_timeout(_pSSL);
continue;
}
}
else
{
break;
}
}
resendCount = 0;
}
if (SSL_is_init_finished(_pSSL))
return 1;
else
return 0;
}
