1 files changed, 246 insertions, 0 deletions
diff --git a/tests/tls13/compress-cert-cli.c b/tests/tls13/compress-cert-cli.c
new file mode 100644
index 0000000..f4e66bf
--- /dev/null
+++ b/tests/tls13/compress-cert-cli.c
@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2022 Red Hat, Inc.
+ *
+ * Author: Daiki Ueno
+ *
+ * This file is part of GnuTLS.
+ *
+ * GnuTLS is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuTLS is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+#include <assert.h>
+#include "cert-common.h"
+
+#include "utils.h"
+#include "eagain-common.h"
+
+const char *side = "";
+
+static void tls_log_func(int level, const char *str)
+{
+	fprintf(stderr, "%s|<%d>| %s", side, level, str);
+}
+
+struct handshake_cb_data_st {
+	bool is_server;
+	bool found_compress_certificate;
+	bool found_compressed_certificate;
+	bool found_certificate;
+};
+
+static int ext_callback(void *ctx, unsigned tls_id, const unsigned char *data, unsigned size)
+{
+	struct handshake_cb_data_st *cb_data = ctx;
+	if (tls_id == 27) {	/* compress_certificate */
+		cb_data->found_compress_certificate = 1;
+	}
+	return 0;
+}
+
+#define SKIP8(pos, total) { \
+	uint8_t _s; \
+	if (pos+1 > total) fail("error\n"); \
+	_s = msg->data[pos]; \
+	if ((size_t)(pos+1+_s) > total) fail("error\n"); \
+	pos += 1+_s; \
+	}
+
+static int
+handshake_callback(gnutls_session_t session, unsigned int htype,
+		   unsigned post, unsigned int incoming,
+		   const gnutls_datum_t *msg)
+{
+	struct handshake_cb_data_st *data = gnutls_session_get_ptr(session);
+	unsigned pos = 0;
+	gnutls_datum_t mmsg;
+	int ret;
+
+	if ((data->is_server && incoming) ||
+	    (!data->is_server && !incoming)) {
+		return 0;
+	}
+
+	switch (htype) {
+	case GNUTLS_HANDSHAKE_CERTIFICATE_REQUEST:
+		SKIP8(pos, msg->size);
+
+		mmsg.data = &msg->data[pos];
+		mmsg.size = msg->size - pos;
+		ret = gnutls_ext_raw_parse(data, ext_callback, &mmsg, 0);
+		assert(ret >= 0);
+		break;
+	case GNUTLS_HANDSHAKE_COMPRESSED_CERTIFICATE_PKT:
+		data->found_compressed_certificate = true;
+		break;
+	case GNUTLS_HANDSHAKE_CERTIFICATE_PKT:
+		data->found_certificate = true;
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static void run(void)
+{
+	/* Server stuff. */
+	gnutls_certificate_credentials_t scred;
+	gnutls_session_t server;
+	gnutls_compression_method_t smethods[] = {
+		GNUTLS_COMP_ZSTD, GNUTLS_COMP_BROTLI, GNUTLS_COMP_ZLIB
+	};
+	struct handshake_cb_data_st sdata = { 0, false, false, false };
+	int sret;
+	/* Client stuff. */
+	gnutls_certificate_credentials_t ccred;
+	gnutls_session_t client;
+	gnutls_compression_method_t cmethods[] = {
+		GNUTLS_COMP_ZLIB, GNUTLS_COMP_BROTLI
+	};
+	struct handshake_cb_data_st cdata = { 0, false, false, false };
+	int cret;
+	/* Need to enable anonymous KX specifically. */
+	int ret;
+
+	/* General init. */
+	global_init();
+	gnutls_global_set_log_function(tls_log_func);
+	if (debug)
+		gnutls_global_set_log_level(9);
+
+	/* Init server */
+	assert(gnutls_certificate_allocate_credentials(&scred) >= 0);
+	assert(gnutls_certificate_set_x509_key_mem(scred,
+						   &server_ca3_localhost_cert,
+						   &server_ca3_key,
+						   GNUTLS_X509_FMT_PEM) >= 0);
+	assert(gnutls_certificate_set_x509_trust_mem(scred,
+						     &ca3_cert,
+						     GNUTLS_X509_FMT_PEM) >= 0);
+
+	assert(gnutls_init(&server, GNUTLS_SERVER) >= 0);
+	gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUEST);
+	ret =
+	    gnutls_priority_set_direct(server,
+				       "NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3",
+				       NULL);
+	if (ret < 0)
+		exit(1);
+
+	ret = gnutls_compress_certificate_set_methods(server, smethods, sizeof(smethods)/sizeof(*smethods));
+	if (ret < 0) {
+		fail("server: setting compression method failed (%s)\n",
+		     gnutls_strerror(ret));
+	}
+	sdata.is_server = true;
+	gnutls_session_set_ptr(server, &sdata);
+	gnutls_handshake_set_hook_function(server, GNUTLS_HANDSHAKE_ANY,
+					   GNUTLS_HOOK_POST,
+					   handshake_callback);
+
+	gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE, scred);
+	gnutls_transport_set_push_function(server, server_push);
+	gnutls_transport_set_pull_function(server, server_pull);
+	gnutls_transport_set_ptr(server, server);
+
+	/* Init client */
+	assert(gnutls_certificate_allocate_credentials(&ccred) >= 0);
+	assert(gnutls_certificate_set_x509_key_mem
+	       (ccred, &cli_ca3_cert_chain, &cli_ca3_key, GNUTLS_X509_FMT_PEM) >= 0);
+	assert(gnutls_certificate_set_x509_trust_mem
+	       (ccred, &ca3_cert, GNUTLS_X509_FMT_PEM) >= 0);
+
+	gnutls_init(&client, GNUTLS_CLIENT);
+	ret =
+	    gnutls_priority_set_direct(client,
+				       "NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3",
+				       NULL);
+	assert(ret >= 0);
+
+	ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE, ccred);
+	if (ret < 0)
+		exit(1);
+
+	ret = gnutls_compress_certificate_set_methods(client, cmethods, sizeof(cmethods)/sizeof(*cmethods));
+	if (ret < 0) {
+		fail("client: setting compression method failed (%s)\n",
+		     gnutls_strerror(ret));
+	}
+	cdata.is_server = false;
+	gnutls_session_set_ptr(client, &cdata);
+	gnutls_handshake_set_hook_function(client, GNUTLS_HANDSHAKE_ANY,
+					   GNUTLS_HOOK_POST,
+					   handshake_callback);
+
+	gnutls_transport_set_push_function(client, client_push);
+	gnutls_transport_set_pull_function(client, client_pull);
+	gnutls_transport_set_ptr(client, client);
+
+
+	HANDSHAKE(client, server);
+	if (debug)
+		success("Handshake established\n");
+
+	if (!sdata.found_compress_certificate) {
+		fail("server: compress_certificate extension not sent\n");
+	}
+	if (!sdata.found_compressed_certificate) {
+		fail("server: CompressedCertificate not sent\n");
+	}
+	if (sdata.found_certificate) {
+		fail("server: Certificate sent\n");
+	}
+	if (!cdata.found_compress_certificate) {
+		fail("client: compress_certificate extension not received\n");
+	}
+	if (!cdata.found_compressed_certificate) {
+		fail("client: CompressedCertificate not received\n");
+	}
+	if (cdata.found_certificate) {
+		fail("client: Certificate not received\n");
+	}
+
+	gnutls_bye(client, GNUTLS_SHUT_WR);
+	gnutls_bye(server, GNUTLS_SHUT_WR);
+
+	gnutls_deinit(client);
+	gnutls_deinit(server);
+
+	gnutls_certificate_free_credentials(scred);
+	gnutls_certificate_free_credentials(ccred);
+
+	gnutls_global_deinit();
+	reset_buffers();
+}
+
+void doit(void)
+{
+#if !defined(HAVE_LIBZ) || !defined(HAVE_LIBBROTLI) || !defined(HAVE_LIBZSTD)
+	exit(77);
+#endif
+	run();
+}