--- /dev/null
+/*
+ * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/ssl.h>
+#include <string.h>
+#include "ssltestlib.h"
+#include "testutil.h"
+#include "../ssl/packet_locl.h"
+
+static char *cert = NULL;
+static char *privkey = NULL;
+
+BIO *s_to_c_fbio = NULL, *c_to_s_fbio = NULL;
+int chseen = 0, shseen = 0, sccsseen = 0, ccsaftersh = 0, ccsbeforesh = 0;
+int sappdataseen = 0, cappdataseen = 0, badccs = 0, badvers = 0, badsessid = 0;
+
+unsigned char chsessid[SSL_MAX_SSL_SESSION_ID_LENGTH];
+size_t chsessidlen = 0;
+
+static int watchccs_new(BIO *bi);
+static int watchccs_free(BIO *a);
+static int watchccs_read(BIO *b, char *out, int outl);
+static int watchccs_write(BIO *b, const char *in, int inl);
+static long watchccs_ctrl(BIO *b, int cmd, long num, void *ptr);
+static int watchccs_gets(BIO *bp, char *buf, int size);
+static int watchccs_puts(BIO *bp, const char *str);
+
+/* Choose a sufficiently large type likely to be unused for this custom BIO */
+# define BIO_TYPE_WATCHCCS_FILTER (0x80 | BIO_TYPE_FILTER)
+
+static BIO_METHOD *method_watchccs = NULL;
+
+static const BIO_METHOD *bio_f_watchccs_filter()
+{
+ if (method_watchccs == NULL) {
+ method_watchccs = BIO_meth_new(BIO_TYPE_WATCHCCS_FILTER,
+ "Watch CCS filter");
+ if ( method_watchccs == NULL
+ || !BIO_meth_set_write(method_watchccs, watchccs_write)
+ || !BIO_meth_set_read(method_watchccs, watchccs_read)
+ || !BIO_meth_set_puts(method_watchccs, watchccs_puts)
+ || !BIO_meth_set_gets(method_watchccs, watchccs_gets)
+ || !BIO_meth_set_ctrl(method_watchccs, watchccs_ctrl)
+ || !BIO_meth_set_create(method_watchccs, watchccs_new)
+ || !BIO_meth_set_destroy(method_watchccs, watchccs_free))
+ return NULL;
+ }
+ return method_watchccs;
+}
+
+static int watchccs_new(BIO *bio)
+{
+ BIO_set_init(bio, 1);
+ return 1;
+}
+
+static int watchccs_free(BIO *bio)
+{
+ BIO_set_init(bio, 0);
+ return 1;
+}
+
+static int watchccs_read(BIO *bio, char *out, int outl)
+{
+ int ret = 0;
+ BIO *next = BIO_next(bio);
+
+ if (outl <= 0)
+ return 0;
+ if (next == NULL)
+ return 0;
+
+ BIO_clear_retry_flags(bio);
+
+ ret = BIO_read(next, out, outl);
+ if (ret <= 0 && BIO_should_read(next))
+ BIO_set_retry_read(bio);
+
+ return ret;
+}
+
+static int watchccs_write(BIO *bio, const char *in, int inl)
+{
+ int ret = 0;
+ BIO *next = BIO_next(bio);
+ PACKET pkt, msg, msgbody, sessionid;
+ unsigned int rectype, recvers, msgtype, expectedrecvers;
+
+ if (inl <= 0)
+ return 0;
+ if (next == NULL)
+ return 0;
+
+ BIO_clear_retry_flags(bio);
+
+ if (!PACKET_buf_init(&pkt, (const unsigned char *)in, inl))
+ return 0;
+
+ /* We assume that we always write complete records each time */
+ while (PACKET_remaining(&pkt)) {
+ if (!PACKET_get_1(&pkt, &rectype)
+ || !PACKET_get_net_2(&pkt, &recvers)
+ || !PACKET_get_length_prefixed_2(&pkt, &msg))
+ return 0;
+
+ expectedrecvers = TLS1_2_VERSION;
+
+ if (rectype == SSL3_RT_HANDSHAKE) {
+ if (!PACKET_get_1(&msg, &msgtype)
+ || !PACKET_get_length_prefixed_3(&msg, &msgbody))
+ return 0;
+ if (msgtype == SSL3_MT_CLIENT_HELLO) {
+ chseen++;
+ expectedrecvers = TLS1_VERSION;
+ /*
+ * Skip legacy_version (2 bytes) and Random (32 bytes) to read
+ * session_id.
+ */
+ if (!PACKET_forward(&msgbody, 34)
+ || !PACKET_get_length_prefixed_1(&msgbody, &sessionid))
+ return 0;
+
+ if (chseen == 1) {
+ /* Save the session id for later */
+ chsessidlen = PACKET_remaining(&sessionid);
+ if (!PACKET_copy_bytes(&sessionid, chsessid, chsessidlen))
+ return 0;
+ } else {
+ /*
+ * Check the session id for the second ClientHello is the
+ * same as the first one.
+ */
+ if (PACKET_remaining(&sessionid) != chsessidlen
+ || (chsessidlen > 0
+ && memcmp(chsessid, PACKET_data(&sessionid),
+ chsessidlen) != 0))
+ badsessid = 1;
+ }
+ } else if (msgtype == SSL3_MT_SERVER_HELLO) {
+ shseen++;
+ /*
+ * Skip legacy_version (2 bytes) and Random (32 bytes) to read
+ * session_id.
+ */
+ if (!PACKET_forward(&msgbody, 34)
+ || !PACKET_get_length_prefixed_1(&msgbody, &sessionid))
+ return 0;
+
+ /*
+ * Check the session id is the same as the one in the
+ * ClientHello
+ */
+ if (PACKET_remaining(&sessionid) != chsessidlen
+ || (chsessidlen > 0
+ && memcmp(chsessid, PACKET_data(&sessionid),
+ chsessidlen) != 0))
+ badsessid = 1;
+ }
+ } else if (rectype == SSL3_RT_CHANGE_CIPHER_SPEC) {
+ if (bio == s_to_c_fbio) {
+ /*
+ * Server writing. We shouldn't have written any app data
+ * yet, and we should have seen both the ClientHello and the
+ * ServerHello
+ */
+ if (!sappdataseen
+ && chseen == 1
+ && shseen == 1
+ && !sccsseen)
+ sccsseen = 1;
+ else
+ badccs = 1;
+ } else if (!cappdataseen) {
+ /*
+ * Client writing. We shouldn't have written any app data
+ * yet, and we should have seen the ClientHello
+ */
+ if (shseen == 1 && !ccsaftersh)
+ ccsaftersh = 1;
+ else if (shseen == 0 && !ccsbeforesh)
+ ccsbeforesh = 1;
+ else
+ badccs = 1;
+ } else {
+ badccs = 1;
+ }
+ } else if(rectype == SSL3_RT_APPLICATION_DATA) {
+ if (bio == s_to_c_fbio)
+ sappdataseen = 1;
+ else
+ cappdataseen = 1;
+ }
+ if (recvers != expectedrecvers)
+ badvers = 1;
+ }
+
+ ret = BIO_write(next, in, inl);
+ if (ret <= 0 && BIO_should_write(next))
+ BIO_set_retry_write(bio);
+
+ return ret;
+}
+
+static long watchccs_ctrl(BIO *bio, int cmd, long num, void *ptr)
+{
+ long ret;
+ BIO *next = BIO_next(bio);
+
+ if (next == NULL)
+ return 0;
+
+ switch (cmd) {
+ case BIO_CTRL_DUP:
+ ret = 0;
+ break;
+ default:
+ ret = BIO_ctrl(next, cmd, num, ptr);
+ break;
+ }
+ return ret;
+}
+
+static int watchccs_gets(BIO *bio, char *buf, int size)
+{
+ /* We don't support this - not needed anyway */
+ return -1;
+}
+
+static int watchccs_puts(BIO *bio, const char *str)
+{
+ return watchccs_write(bio, str, strlen(str));
+}
+
+static int test_tls13ccs(int tst)
+{
+ SSL_CTX *sctx = NULL, *cctx = NULL;
+ SSL *sssl = NULL, *cssl = NULL;
+ int ret = 0;
+ const char msg[] = "Dummy data";
+ char buf[80];
+ size_t written, readbytes;
+ SSL_SESSION *sess = NULL;
+
+ chseen = shseen = sccsseen = ccsaftersh = ccsbeforesh = 0;
+ sappdataseen = cappdataseen = badccs = badvers = badsessid = 0;
+ chsessidlen = 0;
+
+ if (!TEST_true(create_ssl_ctx_pair(TLS_server_method(), TLS_client_method(),
+ &sctx, &cctx, cert, privkey)))
+ goto err;
+
+ /*
+ * Test 0: Simple Handshake
+ * Test 1: Simple Handshake, client middlebox compat mode disabled
+ * Test 2: Simple Handshake, server middlebox compat mode disabled
+ * Test 3: HRR Handshake
+ * Test 4: HRR Handshake, client middlebox compat mode disabled
+ * Test 5: HRR Handshake, server middlebox compat mode disabled
+ * Test 6: Early data handshake
+ * Test 7: Early data handshake, client middlebox compat mode disabled
+ * Test 8: Early data handshake, server middlebox compat mode disabled
+ * Test 9: Early data then HRR
+ * Test 10: Early data then HRR, client middlebox compat mode disabled
+ * Test 11: Early data then HRR, server middlebox compat mode disabled
+ */
+ switch (tst) {
+ case 0:
+ case 3:
+ case 6:
+ case 9:
+ break;
+ case 1:
+ case 4:
+ case 7:
+ case 10:
+ SSL_CTX_clear_options(cctx, SSL_OP_ENABLE_MIDDLEBOX_COMPAT);
+ break;
+ case 2:
+ case 5:
+ case 8:
+ case 11:
+ SSL_CTX_clear_options(sctx, SSL_OP_ENABLE_MIDDLEBOX_COMPAT);
+ break;
+ default:
+ TEST_error("Invalid test value");
+ goto err;
+ }
+
+ if (tst >= 6) {
+ /* Get a session suitable for early_data */
+ if (!TEST_true(create_ssl_objects(sctx, cctx, &sssl, &cssl, NULL, NULL))
+ || !TEST_true(create_ssl_connection(sssl, cssl, SSL_ERROR_NONE)))
+ goto err;
+ sess = SSL_get1_session(cssl);
+ if (!TEST_ptr(sess))
+ goto err;
+ SSL_shutdown(cssl);
+ SSL_shutdown(sssl);
+ SSL_free(sssl);
+ SSL_free(cssl);
+ sssl = cssl = NULL;
+ }
+
+ if ((tst >= 3 && tst <= 5) || tst >= 9) {
+ /* HRR handshake */
+ if (!TEST_true(SSL_CTX_set1_groups_list(sctx, "P-256")))
+ goto err;
+ }
+
+ s_to_c_fbio = BIO_new(bio_f_watchccs_filter());
+ c_to_s_fbio = BIO_new(bio_f_watchccs_filter());
+ if (!TEST_ptr(s_to_c_fbio)
+ || !TEST_ptr(c_to_s_fbio)) {
+ BIO_free(s_to_c_fbio);
+ BIO_free(c_to_s_fbio);
+ goto err;
+ }
+
+ /* BIOs get freed on error */
+ if (!TEST_true(create_ssl_objects(sctx, cctx, &sssl, &cssl, s_to_c_fbio,
+ c_to_s_fbio)))
+ goto err;
+
+ if (tst >= 6) {
+ /* Early data */
+ if (!TEST_true(SSL_set_session(cssl, sess))
+ || !TEST_true(SSL_write_early_data(cssl, msg, strlen(msg),
+ &written))
+ || (tst <= 8
+ && !TEST_int_eq(SSL_read_early_data(sssl, buf, sizeof(buf),
+ &readbytes),
+ SSL_READ_EARLY_DATA_SUCCESS)))
+ goto err;
+ if (tst <= 8) {
+ if (!TEST_int_gt(SSL_connect(cssl), 0))
+ goto err;
+ } else {
+ if (!TEST_int_le(SSL_connect(cssl), 0))
+ goto err;
+ }
+ if (!TEST_int_eq(SSL_read_early_data(sssl, buf, sizeof(buf),
+ &readbytes),
+ SSL_READ_EARLY_DATA_FINISH))
+ goto err;
+ }
+
+ /* Perform handshake (or complete it if doing early data ) */
+ if (!TEST_true(create_ssl_connection(sssl, cssl, SSL_ERROR_NONE)))
+ goto err;
+
+ /*
+ * Check there were no unexpected CCS messages, all record versions
+ * were as expected, and that the session ids were reflected by the server
+ * correctly.
+ */
+ if (!TEST_false(badccs) || !TEST_false(badvers) || !TEST_false(badsessid))
+ goto err;
+
+ switch (tst) {
+ case 0:
+ if (!TEST_true(sccsseen)
+ || !TEST_true(ccsaftersh)
+ || !TEST_false(ccsbeforesh)
+ || !TEST_size_t_gt(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 1:
+ if (!TEST_true(sccsseen)
+ || !TEST_false(ccsaftersh)
+ || !TEST_false(ccsbeforesh)
+ || !TEST_size_t_eq(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 2:
+ if (!TEST_false(sccsseen)
+ || !TEST_true(ccsaftersh)
+ || !TEST_false(ccsbeforesh)
+ || !TEST_size_t_gt(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 3:
+ if (!TEST_true(sccsseen)
+ || !TEST_true(ccsaftersh)
+ || !TEST_false(ccsbeforesh)
+ || !TEST_size_t_gt(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 4:
+ if (!TEST_true(sccsseen)
+ || !TEST_false(ccsaftersh)
+ || !TEST_false(ccsbeforesh)
+ || !TEST_size_t_eq(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 5:
+ if (!TEST_false(sccsseen)
+ || !TEST_true(ccsaftersh)
+ || !TEST_false(ccsbeforesh)
+ || !TEST_size_t_gt(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 6:
+ if (!TEST_true(sccsseen)
+ || !TEST_false(ccsaftersh)
+ || !TEST_true(ccsbeforesh)
+ || !TEST_size_t_gt(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 7:
+ if (!TEST_true(sccsseen)
+ || !TEST_false(ccsaftersh)
+ || !TEST_false(ccsbeforesh)
+ || !TEST_size_t_eq(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 8:
+ if (!TEST_false(sccsseen)
+ || !TEST_false(ccsaftersh)
+ || !TEST_true(ccsbeforesh)
+ || !TEST_size_t_gt(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 9:
+ if (!TEST_true(sccsseen)
+ || !TEST_false(ccsaftersh)
+ || !TEST_true(ccsbeforesh)
+ || !TEST_size_t_gt(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 10:
+ if (!TEST_true(sccsseen)
+ || !TEST_false(ccsaftersh)
+ || !TEST_false(ccsbeforesh)
+ || !TEST_size_t_eq(chsessidlen, 0))
+ goto err;
+ break;
+
+ case 11:
+ if (!TEST_false(sccsseen)
+ || !TEST_false(ccsaftersh)
+ || !TEST_true(ccsbeforesh)
+ || !TEST_size_t_gt(chsessidlen, 0))
+ goto err;
+ break;
+
+ default:
+ TEST_error("Invalid test value");
+ goto err;
+ }
+
+ ret = 1;
+ err:
+ SSL_SESSION_free(sess);
+ SSL_free(sssl);
+ SSL_free(cssl);
+ SSL_CTX_free(sctx);
+ SSL_CTX_free(cctx);
+
+ return ret;
+}
+
+int setup_tests(void)
+{
+ if (!TEST_ptr(cert = test_get_argument(0))
+ || !TEST_ptr(privkey = test_get_argument(1)))
+ return 0;
+
+ ADD_ALL_TESTS(test_tls13ccs, 12);
+
+ return 1;
+}
+
+void cleanup_tests(void)
+{
+ BIO_meth_free(method_watchccs);
+}
projects / oweals / openssl.git / commitdiff