--- /dev/null
+/*
+ * Copyright 2016 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 "ssltestlib.h"
+#include "testutil.h"
+
+static void copy_flags(BIO *bio)
+{
+ int flags;
+ BIO *next = BIO_next(bio);
+
+ flags = BIO_test_flags(next, BIO_FLAGS_SHOULD_RETRY | BIO_FLAGS_RWS);
+ BIO_clear_flags(bio, BIO_FLAGS_SHOULD_RETRY | BIO_FLAGS_RWS);
+ BIO_set_flags(bio, flags);
+}
+
+static int tls_corrupt_read(BIO *bio, char *out, int outl)
+{
+ int ret;
+ BIO *next = BIO_next(bio);
+
+ ret = BIO_read(next, out, outl);
+ copy_flags(bio);
+
+ return ret;
+}
+
+static int tls_corrupt_write(BIO *bio, const char *in, int inl)
+{
+ int ret;
+ BIO *next = BIO_next(bio);
+ char *copy;
+
+ if (in[0] == SSL3_RT_APPLICATION_DATA) {
+ copy = BUF_memdup(in, inl);
+ TEST_check(copy != NULL);
+ /* corrupt last bit of application data */
+ copy[inl-1] ^= 1;
+ ret = BIO_write(next, copy, inl);
+ OPENSSL_free(copy);
+ } else {
+ ret = BIO_write(next, in, inl);
+ }
+ copy_flags(bio);
+
+ return ret;
+}
+
+static long tls_corrupt_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 = 0L;
+ break;
+ default:
+ ret = BIO_ctrl(next, cmd, num, ptr);
+ break;
+ }
+ return ret;
+}
+
+static int tls_corrupt_gets(BIO *bio, char *buf, int size)
+{
+ /* We don't support this - not needed anyway */
+ return -1;
+}
+
+static int tls_corrupt_puts(BIO *bio, const char *str)
+{
+ /* We don't support this - not needed anyway */
+ return -1;
+}
+
+static int tls_corrupt_new(BIO *bio)
+{
+ BIO_set_init(bio, 1);
+
+ return 1;
+}
+
+static int tls_corrupt_free(BIO *bio)
+{
+ BIO_set_init(bio, 0);
+
+ return 1;
+}
+
+#define BIO_TYPE_CUSTOM_FILTER (0x80 | BIO_TYPE_FILTER)
+
+static BIO_METHOD *method_tls_corrupt = NULL;
+
+/* Note: Not thread safe! */
+static const BIO_METHOD *bio_f_tls_corrupt_filter(void)
+{
+ if (method_tls_corrupt == NULL) {
+ method_tls_corrupt = BIO_meth_new(BIO_TYPE_CUSTOM_FILTER,
+ "TLS corrupt filter");
+ if ( method_tls_corrupt == NULL
+ || !BIO_meth_set_write(method_tls_corrupt, tls_corrupt_write)
+ || !BIO_meth_set_read(method_tls_corrupt, tls_corrupt_read)
+ || !BIO_meth_set_puts(method_tls_corrupt, tls_corrupt_puts)
+ || !BIO_meth_set_gets(method_tls_corrupt, tls_corrupt_gets)
+ || !BIO_meth_set_ctrl(method_tls_corrupt, tls_corrupt_ctrl)
+ || !BIO_meth_set_create(method_tls_corrupt, tls_corrupt_new)
+ || !BIO_meth_set_destroy(method_tls_corrupt, tls_corrupt_free))
+ return NULL;
+ }
+ return method_tls_corrupt;
+}
+
+static void bio_f_tls_corrupt_filter_free(void)
+{
+ BIO_meth_free(method_tls_corrupt);
+}
+
+/*
+ * The test is supposed to be executed with RSA key, customarily
+ * with apps/server.pem used even in other tests. For this reason
+ * |cipher_list| is initialized with RSA ciphers' names. This
+ * naturally means that if test is to be re-purposed for other
+ * type of key, then NIS_auth_* filter below would need adjustment.
+ */
+static const char **cipher_list = NULL;
+
+static int setup_cipher_list()
+{
+ SSL_CTX *ctx = NULL;
+ SSL *ssl = NULL;
+ static STACK_OF(SSL_CIPHER) *sk_ciphers = NULL;
+ int i, numciphers;
+
+ ctx = SSL_CTX_new(TLS_server_method());
+ TEST_check(ctx != NULL);
+ ssl = SSL_new(ctx);
+ TEST_check(ssl != NULL);
+ sk_ciphers = SSL_get1_supported_ciphers(ssl);
+ TEST_check(sk_ciphers != NULL);
+
+ /*
+ * The |cipher_list| will be filled only with names of RSA ciphers,
+ * so that some of the allocated space will be wasted, but the loss
+ * is deemed acceptable...
+ */
+ cipher_list = OPENSSL_malloc(sk_SSL_CIPHER_num(sk_ciphers) *
+ sizeof(cipher_list[0]));
+ TEST_check(cipher_list != NULL);
+
+ for (numciphers = 0, i = 0; i < sk_SSL_CIPHER_num(sk_ciphers); i++) {
+ const SSL_CIPHER *cipher = sk_SSL_CIPHER_value(sk_ciphers, i);
+
+ if (SSL_CIPHER_get_auth_nid(cipher) == NID_auth_rsa)
+ cipher_list[numciphers++] = SSL_CIPHER_get_name(cipher);
+ }
+ TEST_check(numciphers != 0);
+
+ sk_SSL_CIPHER_free(sk_ciphers);
+ SSL_free(ssl);
+ SSL_CTX_free(ctx);
+
+ return numciphers;
+}
+
+static char *cert = NULL;
+static char *privkey = NULL;
+
+static int test_ssl_corrupt(int testidx)
+{
+ SSL_CTX *sctx = NULL, *cctx = NULL;
+ SSL *server = NULL, *client = NULL;
+ BIO *c_to_s_fbio;
+ int testresult = 0;
+ static unsigned char junk[16000] = { 0 };
+
+ printf("Starting Test %d, %s\n", testidx, cipher_list[testidx]);
+
+ if (!create_ssl_ctx_pair(TLS_server_method(), TLS_client_method(), &sctx,
+ &cctx, cert, privkey)) {
+ printf("Unable to create SSL_CTX pair\n");
+ return 0;
+ }
+
+ if (!SSL_CTX_set_cipher_list(cctx, cipher_list[testidx])) {
+ printf("Failed setting cipher list\n");
+ goto end;
+ }
+
+ c_to_s_fbio = BIO_new(bio_f_tls_corrupt_filter());
+ if (c_to_s_fbio == NULL) {
+ printf("Failed to create filter BIO\n");
+ goto end;
+ }
+
+ /* BIO is freed by create_ssl_connection on error */
+ if (!create_ssl_objects(sctx, cctx, &server, &client, NULL,
+ c_to_s_fbio)) {
+ printf("Unable to create SSL objects\n");
+ ERR_print_errors_fp(stdout);
+ goto end;
+ }
+
+ if (!create_ssl_connection(server, client)) {
+ printf("Unable to create SSL connection\n");
+ ERR_print_errors_fp(stdout);
+ goto end;
+ }
+
+ if (SSL_write(client, junk, sizeof(junk)) < 0) {
+ printf("Unable to SSL_write\n");
+ ERR_print_errors_fp(stdout);
+ goto end;
+ }
+
+ if (SSL_read(server, junk, sizeof(junk)) >= 0) {
+ printf("Read should have failed with \"bad record mac\"\n");
+ goto end;
+ }
+
+ if (ERR_GET_REASON(ERR_peek_error()) !=
+ SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC) {
+ ERR_print_errors_fp(stdout);
+ goto end;
+ }
+
+ testresult = 1;
+ end:
+ SSL_free(server);
+ SSL_free(client);
+ SSL_CTX_free(sctx);
+ SSL_CTX_free(cctx);
+
+ return testresult;
+}
+
+int main(int argc, char *argv[])
+{
+ BIO *err = NULL;
+ int testresult = 1;
+
+ if (argc != 3) {
+ printf("Invalid argument count\n");
+ return 1;
+ }
+
+ cert = argv[1];
+ privkey = argv[2];
+
+ err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
+
+ CRYPTO_set_mem_debug(1);
+ CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
+
+ ADD_ALL_TESTS(test_ssl_corrupt, setup_cipher_list());
+
+ testresult = run_tests(argv[0]);
+
+ bio_f_tls_corrupt_filter_free();
+
+ OPENSSL_free(cipher_list);
+
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
+ if (CRYPTO_mem_leaks(err) <= 0)
+ testresult = 1;
+#endif
+ BIO_free(err);
+
+ if (!testresult)
+ printf("PASS\n");
+
+ return testresult;
+}
projects / oweals / openssl.git / commitdiff