Support TLS extensions (specifically, HostName)
Submitted by: Peter Sylvester
diff --git a/apps/s_server.c b/apps/s_server.c
index 918f776..7dc864f 100644
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -221,6 +221,9 @@
static int accept_socket= -1;
#define TEST_CERT "server.pem"
+#ifndef OPENSSL_NO_TLSEXT
+#define TEST_CERT2 "server2.pem"
+#endif
#undef PROG
#define PROG s_server_main
@@ -230,6 +233,9 @@
static int s_server_verify=SSL_VERIFY_NONE;
static int s_server_session_id_context = 1; /* anything will do */
static const char *s_cert_file=TEST_CERT,*s_key_file=NULL;
+#ifndef OPENSSL_NO_TLSEXT
+static const char *s_cert_file2=TEST_CERT2,*s_key_file2=NULL;
+#endif
static char *s_dcert_file=NULL,*s_dkey_file=NULL;
#ifdef FIONBIO
static int s_nbio=0;
@@ -237,6 +243,9 @@
static int s_nbio_test=0;
int s_crlf=0;
static SSL_CTX *ctx=NULL;
+#ifndef OPENSSL_NO_TLSEXT
+static SSL_CTX *ctx2=NULL;
+#endif
static int www=0;
static BIO *bio_s_out=NULL;
@@ -251,10 +260,7 @@
static const char *session_id_prefix=NULL;
static int enable_timeouts = 0;
-#ifdef mtu
-#undef mtu
-#endif
-static long mtu;
+static long socketMtu;
static int cert_chain = 0;
@@ -268,6 +274,11 @@
s_dkey_file=NULL;
s_cert_file=TEST_CERT;
s_key_file=NULL;
+#ifndef OPENSSL_NO_TLSEXT
+ s_cert_file2=TEST_CERT2;
+ s_key_file2=NULL;
+ ctx2=NULL;
+#endif
#ifdef FIONBIO
s_nbio=0;
#endif
@@ -354,6 +365,14 @@
#endif
BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
+#ifndef OPENSSL_NO_TLSEXT
+ BIO_printf(bio_err," -servername host - check TLS1 servername\n");
+ BIO_printf(bio_err," -cert2 arg - certificate file to use for servername\n");
+ BIO_printf(bio_err," (default is %s)\n",TEST_CERT2);
+ BIO_printf(bio_err," -key2 arg - Private Key file to use for servername, in cert file if\n");
+ BIO_printf(bio_err," not specified (default is %s)\n",TEST_CERT2);
+ BIO_printf(bio_err," -servername host - check TLS1 servername\n");
+#endif
}
static int local_argc=0;
@@ -509,6 +528,37 @@
}
#endif
+#ifndef OPENSSL_NO_TLSEXT
+
+/* This is a context that we pass to callbacks */
+typedef struct tlsextctx_st {
+ char * servername;
+ BIO * biodebug;
+} tlsextctx;
+
+
+static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg) {
+ tlsextctx * p = (tlsextctx *) arg;
+ const char * servername = SSL_get_servername(s, TLSEXT_TYPE_SERVER_host);
+ if (servername)
+ BIO_printf(p->biodebug,"Hostname in TLS extension: \"%s\"\n",servername);
+
+ if (!p->servername) {
+ SSL_set_tlsext_servername_done(s,2);
+ return SSL_ERROR_NONE;
+ }
+
+ if (servername) {
+ if (strcmp(servername,p->servername))
+ return TLS1_AD_UNRECOGNIZED_NAME;
+ if (ctx2)
+ SSL_set_SSL_CTX(s,ctx2);
+ SSL_set_tlsext_servername_done(s,1);
+ }
+ return SSL_ERROR_NONE;
+}
+#endif
+
int MAIN(int, char **);
int MAIN(int argc, char *argv[])
@@ -528,10 +578,7 @@
int no_tmp_rsa=0,no_dhe=0,no_ecdhe=0,nocert=0;
int state=0;
const SSL_METHOD *meth=NULL;
-#ifdef sock_type
-#undef sock_type
-#endif
- int sock_type=SOCK_STREAM;
+ int socketType=SOCK_STREAM;
#ifndef OPENSSL_NO_ENGINE
ENGINE *e=NULL;
#endif
@@ -542,7 +589,16 @@
int s_dcert_format = FORMAT_PEM, s_dkey_format = FORMAT_PEM;
X509 *s_cert = NULL, *s_dcert = NULL;
EVP_PKEY *s_key = NULL, *s_dkey = NULL;
+#ifndef OPENSSL_NO_TLSEXT
+ EVP_PKEY *s_key2 = NULL;
+ X509 *s_cert2 = NULL;
+#endif
+#ifndef OPENSSL_NO_TLSEXT
+ tlsextctx tlsextcbp =
+ {NULL,NULL
+ };
+#endif
#if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
meth=SSLv23_server_method();
#elif !defined(OPENSSL_NO_SSL3)
@@ -755,14 +811,14 @@
else if (strcmp(*argv,"-dtls1") == 0)
{
meth=DTLSv1_server_method();
- sock_type = SOCK_DGRAM;
+ socketType = SOCK_DGRAM;
}
else if (strcmp(*argv,"-timeout") == 0)
enable_timeouts = 1;
else if (strcmp(*argv,"-mtu") == 0)
{
if (--argc < 1) goto bad;
- mtu = atol(*(++argv));
+ socketMtu = atol(*(++argv));
}
else if (strcmp(*argv, "-chain") == 0)
cert_chain = 1;
@@ -784,6 +840,24 @@
if (--argc < 1) goto bad;
inrand= *(++argv);
}
+#ifndef OPENSSL_NO_TLSEXT
+ else if (strcmp(*argv,"-servername") == 0)
+ {
+ if (--argc < 1) goto bad;
+ tlsextcbp.servername= *(++argv);
+ /* meth=TLSv1_server_method(); */
+ }
+ else if (strcmp(*argv,"-cert2") == 0)
+ {
+ if (--argc < 1) goto bad;
+ s_cert_file2= *(++argv);
+ }
+ else if (strcmp(*argv,"-key2") == 0)
+ {
+ if (--argc < 1) goto bad;
+ s_key_file2= *(++argv);
+ }
+#endif
else
{
BIO_printf(bio_err,"unknown option %s\n",*argv);
@@ -816,6 +890,10 @@
if (s_key_file == NULL)
s_key_file = s_cert_file;
+#ifndef OPENSSL_NO_TLSEXT
+ if (s_key_file2 == NULL)
+ s_key_file2 = s_cert_file2;
+#endif
if (nocert == 0)
{
@@ -835,8 +913,31 @@
ERR_print_errors(bio_err);
goto end;
}
+
+#ifndef OPENSSL_NO_TLSEXT
+ if (tlsextcbp.servername)
+ {
+ s_key2 = load_key(bio_err, s_key_file2, s_key_format, 0, pass, e,
+ "second server certificate private key file");
+ if (!s_key2)
+ {
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+
+ s_cert2 = load_cert(bio_err,s_cert_file2,s_cert_format,
+ NULL, e, "second server certificate file");
+
+ if (!s_cert2)
+ {
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ }
+#endif
}
+
if (s_dcert_file)
{
@@ -893,6 +994,10 @@
s_key_file=NULL;
s_dcert_file=NULL;
s_dkey_file=NULL;
+#ifndef OPENSSL_NO_TLSEXT
+ s_cert_file2=NULL;
+ s_key_file2=NULL;
+#endif
}
ctx=SSL_CTX_new(meth);
@@ -924,7 +1029,7 @@
/* 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);
+ if (socketType == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
@@ -952,6 +1057,57 @@
store = SSL_CTX_get_cert_store(ctx);
X509_STORE_set_flags(store, vflags);
+#ifndef OPENSSL_NO_TLSEXT
+ if (s_cert2) {
+ ctx2=SSL_CTX_new(meth);
+ if (ctx2 == NULL)
+ {
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ }
+
+ if (ctx2) {
+ BIO_printf(bio_s_out,"Setting secondary ctx parameters\n");
+ if (session_id_prefix)
+ {
+ if(strlen(session_id_prefix) >= 32)
+ BIO_printf(bio_err,
+"warning: id_prefix is too long, only one new session will be possible\n");
+ else if(strlen(session_id_prefix) >= 16)
+ BIO_printf(bio_err,
+"warning: id_prefix is too long if you use SSLv2\n");
+ if(!SSL_CTX_set_generate_session_id(ctx2, generate_session_id))
+ {
+ BIO_printf(bio_err,"error setting 'id_prefix'\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
+ }
+ SSL_CTX_set_quiet_shutdown(ctx2,1);
+ if (bugs) SSL_CTX_set_options(ctx2,SSL_OP_ALL);
+ if (hack) SSL_CTX_set_options(ctx2,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
+ SSL_CTX_set_options(ctx2,off);
+ /* DTLS: partial reads end up discarding unread UDP bytes :-(
+ * Setting read ahead solves this problem.
+ */
+ if (socketType == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx2, 1);
+
+ if (state) SSL_CTX_set_info_callback(ctx2,apps_ssl_info_callback);
+
+ SSL_CTX_sess_set_cache_size(ctx2,128);
+
+ if ((!SSL_CTX_load_verify_locations(ctx2,CAfile,CApath)) ||
+ (!SSL_CTX_set_default_verify_paths(ctx2)))
+ {
+ ERR_print_errors(bio_err);
+ }
+ store = SSL_CTX_get_cert_store(ctx2);
+ X509_STORE_set_flags(store, vflags);
+
+ }
+#endif
#ifndef OPENSSL_NO_DH
if (!no_dhe)
{
@@ -974,6 +1130,22 @@
(void)BIO_flush(bio_s_out);
SSL_CTX_set_tmp_dh(ctx,dh);
+#ifndef OPENSSL_NO_TLSEXT
+ if (ctx2) {
+ if (!dhfile) {
+ DH *dh2=load_dh_param(s_cert_file2);
+ if (dh2 != NULL)
+ {
+ BIO_printf(bio_s_out,"Setting temp DH parameters\n");
+ (void)BIO_flush(bio_s_out);
+
+ DH_free(dh);
+ dh = dh2;
+ }
+ }
+ SSL_CTX_set_tmp_dh(ctx2,dh);
+ }
+#endif
DH_free(dh);
}
#endif
@@ -1019,12 +1191,20 @@
(void)BIO_flush(bio_s_out);
SSL_CTX_set_tmp_ecdh(ctx,ecdh);
+#ifndef OPENSSL_NO_TLSEXT
+ if (ctx2)
+ SSL_CTX_set_tmp_ecdh(ctx2,ecdh);
+#endif
EC_KEY_free(ecdh);
}
#endif
if (!set_cert_key_stuff(ctx,s_cert,s_key))
goto end;
+#ifndef OPENSSL_NO_TLSEXT
+ if (ctx2 && !set_cert_key_stuff(ctx2,s_cert2,s_key2))
+ goto end;
+#endif
if (s_dcert != NULL)
{
if (!set_cert_key_stuff(ctx,s_dcert,s_dkey))
@@ -1033,8 +1213,13 @@
#ifndef OPENSSL_NO_RSA
#if 1
- if (!no_tmp_rsa)
+ if (!no_tmp_rsa) {
SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
+#ifndef OPENSSL_NO_TLSEXT
+ if (ctx2)
+ SSL_CTX_set_tmp_rsa_callback(ctx2,tmp_rsa_cb);
+#endif
+ }
#else
if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
{
@@ -1050,30 +1235,65 @@
ERR_print_errors(bio_err);
goto end;
}
+#ifndef OPENSSL_NO_TLSEXT
+ if (ctx2) {
+ if (!SSL_CTX_set_tmp_rsa(ctx2,rsa))
+ {
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ }
+#endif
RSA_free(rsa);
BIO_printf(bio_s_out,"\n");
}
#endif
#endif
- if (cipher != NULL)
+ 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;
+ BIO_printf(bio_err,"error setting cipher list\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+#ifndef OPENSSL_NO_TLSEXT
+ if (ctx2 && !SSL_CTX_set_cipher_list(ctx2,cipher)) {
+ BIO_printf(bio_err,"error setting cipher list\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+#endif
}
SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
sizeof s_server_session_id_context);
- if (CAfile != NULL)
+#ifndef OPENSSL_NO_TLSEXT
+ if (ctx2) {
+ SSL_CTX_set_verify(ctx2,s_server_verify,verify_callback);
+ SSL_CTX_set_session_id_context(ctx2,(void*)&s_server_session_id_context,
+ sizeof s_server_session_id_context);
+
+ }
+ tlsextcbp.biodebug = bio_s_out;
+ SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
+ SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
+ SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
+ SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
+#endif
+ if (CAfile != NULL) {
SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
+#ifndef OPENSSL_NO_TLSEXT
+ if (ctx2)
+ SSL_CTX_set_client_CA_list(ctx2,SSL_load_client_CA_file(CAfile));
+#endif
+ }
BIO_printf(bio_s_out,"ACCEPT\n");
if (www)
- do_server(port,sock_type,&accept_socket,www_body, context);
+ do_server(port,socketType,&accept_socket,www_body, context);
else
- do_server(port,sock_type,&accept_socket,sv_body, context);
+ do_server(port,socketType,&accept_socket,sv_body, context);
print_stats(bio_s_out,ctx);
ret=0;
end:
@@ -1090,6 +1310,13 @@
OPENSSL_free(pass);
if (dpass)
OPENSSL_free(dpass);
+#ifndef OPENSSL_NO_TLSEXT
+ if (ctx2 != NULL) SSL_CTX_free(ctx2);
+ if (s_cert2)
+ X509_free(s_cert2);
+ if (s_key2)
+ EVP_PKEY_free(s_key2);
+#endif
if (bio_s_out != NULL)
{
BIO_free(bio_s_out);
@@ -1189,10 +1416,10 @@
}
- if ( mtu > 0)
+ if ( socketMtu > 0)
{
SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
- SSL_set_mtu(con, mtu);
+ SSL_set_mtu(con, socketMtu);
}
else
/* want to do MTU discovery */
