diff options
author | Andy Polyakov <appro@openssl.org> | 2016-10-31 21:50:26 +0100 |
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committer | Matt Caswell <matt@openssl.org> | 2016-11-10 13:04:11 +0000 |
commit | c5a569927fb7bcfa34dde76dbc021d4f8a5c8fb1 (patch) | |
tree | 03923cf0401bbc435f55f906b4c87d3dc2ac6cb2 /test/sslcorrupttest.c | |
parent | a378a46985698bf2576b2990e7faf21f62dd176a (diff) |
test: add TLS application data corruption test.
Reviewed-by: Emilia Käsper <emilia@openssl.org>
Diffstat (limited to 'test/sslcorrupttest.c')
-rw-r--r-- | test/sslcorrupttest.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/test/sslcorrupttest.c b/test/sslcorrupttest.c new file mode 100644 index 0000000000..26219b6193 --- /dev/null +++ b/test/sslcorrupttest.c @@ -0,0 +1,282 @@ +/* + * 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; +} |