| /* Copyright (c) 2014, Google Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| |
| #include <openssl/base.h> |
| |
| #if !defined(OPENSSL_WINDOWS) |
| #include <arpa/inet.h> |
| #include <netinet/in.h> |
| #include <signal.h> |
| #include <sys/socket.h> |
| #include <unistd.h> |
| #endif |
| |
| #include <sys/types.h> |
| |
| #include <openssl/bio.h> |
| #include <openssl/bytestring.h> |
| #include <openssl/ssl.h> |
| |
| #include "async_bio.h" |
| #include "packeted_bio.h" |
| #include "test_config.h" |
| |
| static int usage(const char *program) { |
| fprintf(stderr, "Usage: %s [flags...]\n", |
| program); |
| return 1; |
| } |
| |
| static int g_ex_data_index = 0; |
| |
| static void SetConfigPtr(SSL *ssl, const TestConfig *config) { |
| SSL_set_ex_data(ssl, g_ex_data_index, (void *)config); |
| } |
| |
| static const TestConfig *GetConfigPtr(SSL *ssl) { |
| return (const TestConfig *)SSL_get_ex_data(ssl, g_ex_data_index); |
| } |
| |
| static int early_callback_called = 0; |
| |
| static int select_certificate_callback(const struct ssl_early_callback_ctx *ctx) { |
| early_callback_called = 1; |
| |
| const TestConfig *config = GetConfigPtr(ctx->ssl); |
| |
| if (config->expected_server_name.empty()) { |
| return 1; |
| } |
| |
| const uint8_t *extension_data; |
| size_t extension_len; |
| CBS extension, server_name_list, host_name; |
| uint8_t name_type; |
| |
| if (!SSL_early_callback_ctx_extension_get(ctx, TLSEXT_TYPE_server_name, |
| &extension_data, |
| &extension_len)) { |
| fprintf(stderr, "Could not find server_name extension.\n"); |
| return -1; |
| } |
| |
| CBS_init(&extension, extension_data, extension_len); |
| if (!CBS_get_u16_length_prefixed(&extension, &server_name_list) || |
| CBS_len(&extension) != 0 || |
| !CBS_get_u8(&server_name_list, &name_type) || |
| name_type != TLSEXT_NAMETYPE_host_name || |
| !CBS_get_u16_length_prefixed(&server_name_list, &host_name) || |
| CBS_len(&server_name_list) != 0) { |
| fprintf(stderr, "Could not decode server_name extension.\n"); |
| return -1; |
| } |
| |
| if (!CBS_mem_equal(&host_name, |
| (const uint8_t*)config->expected_server_name.data(), |
| config->expected_server_name.size())) { |
| fprintf(stderr, "Server name mismatch.\n"); |
| } |
| |
| return 1; |
| } |
| |
| static int skip_verify(int preverify_ok, X509_STORE_CTX *store_ctx) { |
| return 1; |
| } |
| |
| static int next_protos_advertised_callback(SSL *ssl, |
| const uint8_t **out, |
| unsigned int *out_len, |
| void *arg) { |
| const TestConfig *config = GetConfigPtr(ssl); |
| if (config->advertise_npn.empty()) |
| return SSL_TLSEXT_ERR_NOACK; |
| |
| // TODO(davidben): Support passing byte strings with NULs to the |
| // test shim. |
| *out = (const uint8_t*)config->advertise_npn.data(); |
| *out_len = config->advertise_npn.size(); |
| return SSL_TLSEXT_ERR_OK; |
| } |
| |
| static int next_proto_select_callback(SSL* ssl, |
| uint8_t** out, |
| uint8_t* outlen, |
| const uint8_t* in, |
| unsigned inlen, |
| void* arg) { |
| const TestConfig *config = GetConfigPtr(ssl); |
| if (config->select_next_proto.empty()) |
| return SSL_TLSEXT_ERR_NOACK; |
| |
| *out = (uint8_t*)config->select_next_proto.data(); |
| *outlen = config->select_next_proto.size(); |
| return SSL_TLSEXT_ERR_OK; |
| } |
| |
| static int cookie_generate_callback(SSL *ssl, uint8_t *cookie, unsigned *cookie_len) { |
| *cookie_len = 32; |
| memset(cookie, 42, *cookie_len); |
| return 1; |
| } |
| |
| static int cookie_verify_callback(SSL *ssl, uint8_t *cookie, unsigned cookie_len) { |
| if (cookie_len != 32) { |
| fprintf(stderr, "Cookie length mismatch.\n"); |
| return 0; |
| } |
| for (size_t i = 0; i < cookie_len; i++) { |
| if (cookie[i] != 42) { |
| fprintf(stderr, "Cookie mismatch.\n"); |
| return 0; |
| } |
| } |
| return 1; |
| } |
| |
| static SSL_CTX *setup_ctx(const TestConfig *config) { |
| SSL_CTX *ssl_ctx = NULL; |
| DH *dh = NULL; |
| |
| const SSL_METHOD *method; |
| if (config->is_dtls) { |
| // TODO(davidben): Get DTLS 1.2 working and test the version negotiation |
| // codepath. This doesn't currently work because |
| // - Session resumption is broken: https://crbug.com/403378 |
| // - DTLS hasn't been updated for EVP_AEAD. |
| if (config->is_server) { |
| method = DTLSv1_server_method(); |
| } else { |
| method = DTLSv1_client_method(); |
| } |
| } else { |
| if (config->is_server) { |
| method = SSLv23_server_method(); |
| } else { |
| method = SSLv23_client_method(); |
| } |
| } |
| ssl_ctx = SSL_CTX_new(method); |
| if (ssl_ctx == NULL) { |
| goto err; |
| } |
| |
| if (config->is_dtls) { |
| // DTLS needs read-ahead to function on a datagram BIO. |
| // |
| // TODO(davidben): this should not be necessary. DTLS code should only |
| // expect a datagram BIO. |
| SSL_CTX_set_read_ahead(ssl_ctx, 1); |
| } |
| |
| if (!SSL_CTX_set_ecdh_auto(ssl_ctx, 1)) { |
| goto err; |
| } |
| |
| if (!SSL_CTX_set_cipher_list(ssl_ctx, "ALL")) { |
| goto err; |
| } |
| |
| dh = DH_get_2048_256(NULL); |
| if (!SSL_CTX_set_tmp_dh(ssl_ctx, dh)) { |
| goto err; |
| } |
| |
| SSL_CTX_set_session_cache_mode(ssl_ctx, SSL_SESS_CACHE_BOTH); |
| |
| ssl_ctx->select_certificate_cb = select_certificate_callback; |
| |
| SSL_CTX_set_next_protos_advertised_cb( |
| ssl_ctx, next_protos_advertised_callback, NULL); |
| SSL_CTX_set_next_proto_select_cb( |
| ssl_ctx, next_proto_select_callback, NULL); |
| |
| SSL_CTX_set_cookie_generate_cb(ssl_ctx, cookie_generate_callback); |
| SSL_CTX_set_cookie_verify_cb(ssl_ctx, cookie_verify_callback); |
| |
| DH_free(dh); |
| return ssl_ctx; |
| |
| err: |
| if (dh != NULL) { |
| DH_free(dh); |
| } |
| if (ssl_ctx != NULL) { |
| SSL_CTX_free(ssl_ctx); |
| } |
| return NULL; |
| } |
| |
| static int retry_async(SSL *ssl, int ret, BIO *bio) { |
| // No error; don't retry. |
| if (ret >= 0) { |
| return 0; |
| } |
| // See if we needed to read or write more. If so, allow one byte through on |
| // the appropriate end to maximally stress the state machine. |
| int err = SSL_get_error(ssl, ret); |
| if (err == SSL_ERROR_WANT_READ) { |
| async_bio_allow_read(bio, 1); |
| return 1; |
| } else if (err == SSL_ERROR_WANT_WRITE) { |
| async_bio_allow_write(bio, 1); |
| return 1; |
| } |
| return 0; |
| } |
| |
| static int do_exchange(SSL_SESSION **out_session, |
| SSL_CTX *ssl_ctx, |
| const TestConfig *config, |
| bool is_resume, |
| int fd, |
| SSL_SESSION *session) { |
| early_callback_called = 0; |
| |
| SSL *ssl = SSL_new(ssl_ctx); |
| if (ssl == NULL) { |
| BIO_print_errors_fp(stdout); |
| return 1; |
| } |
| |
| SetConfigPtr(ssl, config); |
| |
| if (config->fallback_scsv) { |
| if (!SSL_enable_fallback_scsv(ssl)) { |
| BIO_print_errors_fp(stdout); |
| return 1; |
| } |
| } |
| if (!config->key_file.empty()) { |
| if (!SSL_use_PrivateKey_file(ssl, config->key_file.c_str(), |
| SSL_FILETYPE_PEM)) { |
| BIO_print_errors_fp(stdout); |
| return 1; |
| } |
| } |
| if (!config->cert_file.empty()) { |
| if (!SSL_use_certificate_file(ssl, config->cert_file.c_str(), |
| SSL_FILETYPE_PEM)) { |
| BIO_print_errors_fp(stdout); |
| return 1; |
| } |
| } |
| if (config->require_any_client_certificate) { |
| SSL_set_verify(ssl, SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT, |
| skip_verify); |
| } |
| if (config->false_start) { |
| SSL_set_mode(ssl, SSL_MODE_HANDSHAKE_CUTTHROUGH); |
| } |
| if (config->cbc_record_splitting) { |
| SSL_set_mode(ssl, SSL_MODE_CBC_RECORD_SPLITTING); |
| } |
| if (config->partial_write) { |
| SSL_set_mode(ssl, SSL_MODE_ENABLE_PARTIAL_WRITE); |
| } |
| if (config->no_tls12) { |
| SSL_set_options(ssl, SSL_OP_NO_TLSv1_2); |
| } |
| if (config->no_tls11) { |
| SSL_set_options(ssl, SSL_OP_NO_TLSv1_1); |
| } |
| if (config->no_tls1) { |
| SSL_set_options(ssl, SSL_OP_NO_TLSv1); |
| } |
| if (config->no_ssl3) { |
| SSL_set_options(ssl, SSL_OP_NO_SSLv3); |
| } |
| if (config->cookie_exchange) { |
| SSL_set_options(ssl, SSL_OP_COOKIE_EXCHANGE); |
| } |
| |
| BIO *bio = BIO_new_fd(fd, 1 /* take ownership */); |
| if (bio == NULL) { |
| BIO_print_errors_fp(stdout); |
| return 1; |
| } |
| if (config->is_dtls) { |
| BIO *packeted = packeted_bio_create(); |
| BIO_push(packeted, bio); |
| bio = packeted; |
| } |
| if (config->async) { |
| BIO *async = |
| config->is_dtls ? async_bio_create_datagram() : async_bio_create(); |
| BIO_push(async, bio); |
| bio = async; |
| } |
| SSL_set_bio(ssl, bio, bio); |
| |
| if (session != NULL) { |
| if (SSL_set_session(ssl, session) != 1) { |
| fprintf(stderr, "failed to set session\n"); |
| return 2; |
| } |
| } |
| |
| int ret; |
| do { |
| if (config->is_server) { |
| ret = SSL_accept(ssl); |
| } else { |
| ret = SSL_connect(ssl); |
| } |
| } while (config->async && retry_async(ssl, ret, bio)); |
| if (ret != 1) { |
| SSL_free(ssl); |
| BIO_print_errors_fp(stdout); |
| return 2; |
| } |
| |
| if (is_resume && !SSL_session_reused(ssl)) { |
| fprintf(stderr, "session was not reused\n"); |
| return 2; |
| } |
| |
| if (!config->expected_server_name.empty()) { |
| const char *server_name = |
| SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name); |
| if (server_name != config->expected_server_name) { |
| fprintf(stderr, "servername mismatch (got %s; want %s)\n", |
| server_name, config->expected_server_name.c_str()); |
| return 2; |
| } |
| |
| if (!early_callback_called) { |
| fprintf(stderr, "early callback not called\n"); |
| return 2; |
| } |
| } |
| |
| if (!config->expected_certificate_types.empty()) { |
| uint8_t *certificate_types; |
| int num_certificate_types = |
| SSL_get0_certificate_types(ssl, &certificate_types); |
| if (num_certificate_types != |
| (int)config->expected_certificate_types.size() || |
| memcmp(certificate_types, |
| config->expected_certificate_types.data(), |
| num_certificate_types) != 0) { |
| fprintf(stderr, "certificate types mismatch\n"); |
| return 2; |
| } |
| } |
| |
| if (!config->expected_next_proto.empty()) { |
| const uint8_t *next_proto; |
| unsigned next_proto_len; |
| SSL_get0_next_proto_negotiated(ssl, &next_proto, &next_proto_len); |
| if (next_proto_len != config->expected_next_proto.size() || |
| memcmp(next_proto, config->expected_next_proto.data(), |
| next_proto_len) != 0) { |
| fprintf(stderr, "negotiated next proto mismatch\n"); |
| return 2; |
| } |
| } |
| |
| if (config->write_different_record_sizes) { |
| if (config->is_dtls) { |
| fprintf(stderr, "write_different_record_sizes not supported for DTLS\n"); |
| return 6; |
| } |
| // This mode writes a number of different record sizes in an attempt to |
| // trip up the CBC record splitting code. |
| uint8_t buf[32769]; |
| memset(buf, 0x42, sizeof(buf)); |
| static const size_t kRecordSizes[] = { |
| 0, 1, 255, 256, 257, 16383, 16384, 16385, 32767, 32768, 32769}; |
| for (size_t i = 0; i < sizeof(kRecordSizes) / sizeof(kRecordSizes[0]); |
| i++) { |
| int w; |
| const size_t len = kRecordSizes[i]; |
| size_t off = 0; |
| |
| if (len > sizeof(buf)) { |
| fprintf(stderr, "Bad kRecordSizes value.\n"); |
| return 5; |
| } |
| |
| do { |
| w = SSL_write(ssl, buf + off, len - off); |
| if (w > 0) { |
| off += (size_t) w; |
| } |
| } while ((config->async && retry_async(ssl, w, bio)) || |
| (w > 0 && off < len)); |
| |
| if (w < 0 || off != len) { |
| SSL_free(ssl); |
| BIO_print_errors_fp(stdout); |
| return 4; |
| } |
| } |
| } else { |
| for (;;) { |
| uint8_t buf[512]; |
| int n; |
| do { |
| n = SSL_read(ssl, buf, sizeof(buf)); |
| } while (config->async && retry_async(ssl, n, bio)); |
| if (n < 0) { |
| SSL_free(ssl); |
| BIO_print_errors_fp(stdout); |
| return 3; |
| } else if (n == 0) { |
| break; |
| } else { |
| for (int i = 0; i < n; i++) { |
| buf[i] ^= 0xff; |
| } |
| int w; |
| do { |
| w = SSL_write(ssl, buf, n); |
| } while (config->async && retry_async(ssl, w, bio)); |
| if (w != n) { |
| SSL_free(ssl); |
| BIO_print_errors_fp(stdout); |
| return 4; |
| } |
| } |
| } |
| } |
| |
| if (out_session) { |
| *out_session = SSL_get1_session(ssl); |
| } |
| |
| SSL_shutdown(ssl); |
| SSL_free(ssl); |
| return 0; |
| } |
| |
| int main(int argc, char **argv) { |
| #if !defined(OPENSSL_WINDOWS) |
| signal(SIGPIPE, SIG_IGN); |
| #endif |
| |
| if (!SSL_library_init()) { |
| return 1; |
| } |
| g_ex_data_index = SSL_get_ex_new_index(0, NULL, NULL, NULL, NULL); |
| |
| TestConfig config; |
| if (!ParseConfig(argc - 1, argv + 1, &config)) { |
| return usage(argv[0]); |
| } |
| |
| SSL_CTX *ssl_ctx = setup_ctx(&config); |
| if (ssl_ctx == NULL) { |
| BIO_print_errors_fp(stdout); |
| return 1; |
| } |
| |
| SSL_SESSION *session; |
| int ret = do_exchange(&session, |
| ssl_ctx, &config, |
| false /* is_resume */, |
| 3 /* fd */, NULL /* session */); |
| if (ret != 0) { |
| return ret; |
| } |
| |
| if (config.resume) { |
| int ret = do_exchange(NULL, |
| ssl_ctx, &config, |
| true /* is_resume */, |
| 4 /* fd */, |
| config.is_server ? NULL : session); |
| if (ret != 0) { |
| return ret; |
| } |
| } |
| |
| SSL_SESSION_free(session); |
| SSL_CTX_free(ssl_ctx); |
| return 0; |
| } |
