X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fssl_lib.c;h=cc110bc6770f43d5caaec9a577138541bc41e582;hp=363b4f4ab8e7a058c52fa1d1b0b401e2f1daa2e1;hb=6aaa29fb35c6d830c19e673650e6baf3f21ceda0;hpb=54105ddd230c0d77fab91dd3f423b58b2a976de7 diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c index 363b4f4ab8..cc110bc677 100644 --- a/ssl/ssl_lib.c +++ b/ssl/ssl_lib.c @@ -1,5 +1,7 @@ /* - * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. + * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved. + * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved + * Copyright 2005 Nokia. 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 @@ -7,39 +9,6 @@ * https://www.openssl.org/source/license.html */ -/* ==================================================================== - * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. - * ECC cipher suite support in OpenSSL originally developed by - * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. - */ -/* ==================================================================== - * Copyright 2005 Nokia. All rights reserved. - * - * The portions of the attached software ("Contribution") is developed by - * Nokia Corporation and is licensed pursuant to the OpenSSL open source - * license. - * - * The Contribution, originally written by Mika Kousa and Pasi Eronen of - * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites - * support (see RFC 4279) to OpenSSL. - * - * No patent licenses or other rights except those expressly stated in - * the OpenSSL open source license shall be deemed granted or received - * expressly, by implication, estoppel, or otherwise. - * - * No assurances are provided by Nokia that the Contribution does not - * infringe the patent or other intellectual property rights of any third - * party or that the license provides you with all the necessary rights - * to make use of the Contribution. - * - * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN - * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA - * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY - * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR - * OTHERWISE. - */ - -#include #include #include "ssl_locl.h" #include @@ -51,6 +20,9 @@ #include #include #include +#include "internal/cryptlib.h" +#include "internal/rand.h" +#include "internal/refcount.h" const char SSL_version_str[] = OPENSSL_VERSION_TEXT; @@ -431,6 +403,116 @@ static int dane_tlsa_add(SSL_DANE *dane, return 1; } +/* + * Return 0 if there is only one version configured and it was disabled + * at configure time. Return 1 otherwise. + */ +static int ssl_check_allowed_versions(int min_version, int max_version) +{ + int minisdtls = 0, maxisdtls = 0; + + /* Figure out if we're doing DTLS versions or TLS versions */ + if (min_version == DTLS1_BAD_VER + || min_version >> 8 == DTLS1_VERSION_MAJOR) + minisdtls = 1; + if (max_version == DTLS1_BAD_VER + || max_version >> 8 == DTLS1_VERSION_MAJOR) + maxisdtls = 1; + /* A wildcard version of 0 could be DTLS or TLS. */ + if ((minisdtls && !maxisdtls && max_version != 0) + || (maxisdtls && !minisdtls && min_version != 0)) { + /* Mixing DTLS and TLS versions will lead to sadness; deny it. */ + return 0; + } + + if (minisdtls || maxisdtls) { + /* Do DTLS version checks. */ + if (min_version == 0) + /* Ignore DTLS1_BAD_VER */ + min_version = DTLS1_VERSION; + if (max_version == 0) + max_version = DTLS1_2_VERSION; +#ifdef OPENSSL_NO_DTLS1_2 + if (max_version == DTLS1_2_VERSION) + max_version = DTLS1_VERSION; +#endif +#ifdef OPENSSL_NO_DTLS1 + if (min_version == DTLS1_VERSION) + min_version = DTLS1_2_VERSION; +#endif + /* Done massaging versions; do the check. */ + if (0 +#ifdef OPENSSL_NO_DTLS1 + || (DTLS_VERSION_GE(min_version, DTLS1_VERSION) + && DTLS_VERSION_GE(DTLS1_VERSION, max_version)) +#endif +#ifdef OPENSSL_NO_DTLS1_2 + || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION) + && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version)) +#endif + ) + return 0; + } else { + /* Regular TLS version checks. */ + if (min_version == 0) + min_version = SSL3_VERSION; + if (max_version == 0) + max_version = TLS1_3_VERSION; +#ifdef OPENSSL_NO_TLS1_3 + if (max_version == TLS1_3_VERSION) + max_version = TLS1_2_VERSION; +#endif +#ifdef OPENSSL_NO_TLS1_2 + if (max_version == TLS1_2_VERSION) + max_version = TLS1_1_VERSION; +#endif +#ifdef OPENSSL_NO_TLS1_1 + if (max_version == TLS1_1_VERSION) + max_version = TLS1_VERSION; +#endif +#ifdef OPENSSL_NO_TLS1 + if (max_version == TLS1_VERSION) + max_version = SSL3_VERSION; +#endif +#ifdef OPENSSL_NO_SSL3 + if (min_version == SSL3_VERSION) + min_version = TLS1_VERSION; +#endif +#ifdef OPENSSL_NO_TLS1 + if (min_version == TLS1_VERSION) + min_version = TLS1_1_VERSION; +#endif +#ifdef OPENSSL_NO_TLS1_1 + if (min_version == TLS1_1_VERSION) + min_version = TLS1_2_VERSION; +#endif +#ifdef OPENSSL_NO_TLS1_2 + if (min_version == TLS1_2_VERSION) + min_version = TLS1_3_VERSION; +#endif + /* Done massaging versions; do the check. */ + if (0 +#ifdef OPENSSL_NO_SSL3 + || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version) +#endif +#ifdef OPENSSL_NO_TLS1 + || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version) +#endif +#ifdef OPENSSL_NO_TLS1_1 + || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version) +#endif +#ifdef OPENSSL_NO_TLS1_2 + || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version) +#endif +#ifdef OPENSSL_NO_TLS1_3 + || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version) +#endif + ) + return 0; + } + return 1; +} + static void clear_ciphers(SSL *s) { /* clear the current cipher */ @@ -443,13 +525,18 @@ int SSL_clear(SSL *s) { if (s->method == NULL) { SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); - return (0); + return 0; } if (ssl_clear_bad_session(s)) { SSL_SESSION_free(s->session); s->session = NULL; } + SSL_SESSION_free(s->psksession); + s->psksession = NULL; + OPENSSL_free(s->psksession_id); + s->psksession_id = NULL; + s->psksession_id_len = 0; s->error = 0; s->hit = 0; @@ -471,6 +558,8 @@ int SSL_clear(SSL *s) clear_ciphers(s); s->first_packet = 0; + s->key_update = SSL_KEY_UPDATE_NONE; + /* Reset DANE verification result state */ s->dane.mdpth = -1; s->dane.pdpth = -1; @@ -483,20 +572,21 @@ int SSL_clear(SSL *s) /* * Check to see if we were changed into a different method, if so, revert - * back if we are not doing session-id reuse. + * back. */ - if (!ossl_statem_get_in_handshake(s) && (s->session == NULL) - && (s->method != s->ctx->method)) { + if (s->method != s->ctx->method) { s->method->ssl_free(s); s->method = s->ctx->method; if (!s->method->ssl_new(s)) - return (0); - } else - s->method->ssl_clear(s); + return 0; + } else { + if (!s->method->ssl_clear(s)) + return 0; + } RECORD_LAYER_clear(&s->rlayer); - return (1); + return 1; } /** Used to change an SSL_CTXs default SSL method type */ @@ -534,10 +624,21 @@ SSL *SSL_new(SSL_CTX *ctx) goto err; s->lock = CRYPTO_THREAD_lock_new(); - if (s->lock == NULL) { - SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); - OPENSSL_free(s); - return NULL; + if (s->lock == NULL) + goto err; + + /* + * If not using the standard RAND (say for fuzzing), then don't use a + * chained DRBG. + */ + if (RAND_get_rand_method() == RAND_OpenSSL()) { + s->drbg = RAND_DRBG_new(NID_aes_128_ctr, RAND_DRBG_FLAG_CTR_USE_DF, + RAND_DRBG_get0_global()); + if (s->drbg == NULL + || RAND_DRBG_instantiate(s->drbg, NULL, 0) == 0) { + CRYPTO_THREAD_lock_free(s->lock); + goto err; + } } RECORD_LAYER_init(&s->rlayer, s); @@ -549,6 +650,7 @@ SSL *SSL_new(SSL_CTX *ctx) s->mode = ctx->mode; s->max_cert_list = ctx->max_cert_list; s->references = 1; + s->max_early_data = ctx->max_early_data; /* * Earlier library versions used to copy the pointer to the CERT, not @@ -568,8 +670,12 @@ SSL *SSL_new(SSL_CTX *ctx) s->msg_callback_arg = ctx->msg_callback_arg; s->verify_mode = ctx->verify_mode; s->not_resumable_session_cb = ctx->not_resumable_session_cb; + s->record_padding_cb = ctx->record_padding_cb; + s->record_padding_arg = ctx->record_padding_arg; + s->block_padding = ctx->block_padding; s->sid_ctx_length = ctx->sid_ctx_length; - OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); + if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx)) + goto err; memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); s->verify_callback = ctx->default_verify_callback; s->generate_session_id = ctx->generate_session_id; @@ -589,49 +695,46 @@ SSL *SSL_new(SSL_CTX *ctx) SSL_CTX_up_ref(ctx); s->ctx = ctx; - s->tlsext_debug_cb = 0; - s->tlsext_debug_arg = NULL; - s->tlsext_ticket_expected = 0; - s->tlsext_status_type = ctx->tlsext_status_type; - s->tlsext_status_expected = 0; - s->tlsext_ocsp_ids = NULL; - s->tlsext_ocsp_exts = NULL; - s->tlsext_ocsp_resp = NULL; - s->tlsext_ocsp_resplen = 0; + s->ext.debug_cb = 0; + s->ext.debug_arg = NULL; + s->ext.ticket_expected = 0; + s->ext.status_type = ctx->ext.status_type; + s->ext.status_expected = 0; + s->ext.ocsp.ids = NULL; + s->ext.ocsp.exts = NULL; + s->ext.ocsp.resp = NULL; + s->ext.ocsp.resp_len = 0; SSL_CTX_up_ref(ctx); - s->initial_ctx = ctx; + s->session_ctx = ctx; #ifndef OPENSSL_NO_EC - if (ctx->tlsext_ecpointformatlist) { - s->tlsext_ecpointformatlist = - OPENSSL_memdup(ctx->tlsext_ecpointformatlist, - ctx->tlsext_ecpointformatlist_length); - if (!s->tlsext_ecpointformatlist) + if (ctx->ext.ecpointformats) { + s->ext.ecpointformats = + OPENSSL_memdup(ctx->ext.ecpointformats, + ctx->ext.ecpointformats_len); + if (!s->ext.ecpointformats) goto err; - s->tlsext_ecpointformatlist_length = - ctx->tlsext_ecpointformatlist_length; - } - if (ctx->tlsext_ellipticcurvelist) { - s->tlsext_ellipticcurvelist = - OPENSSL_memdup(ctx->tlsext_ellipticcurvelist, - ctx->tlsext_ellipticcurvelist_length); - if (!s->tlsext_ellipticcurvelist) + s->ext.ecpointformats_len = + ctx->ext.ecpointformats_len; + } + if (ctx->ext.supportedgroups) { + s->ext.supportedgroups = + OPENSSL_memdup(ctx->ext.supportedgroups, + ctx->ext.supportedgroups_len); + if (!s->ext.supportedgroups) goto err; - s->tlsext_ellipticcurvelist_length = - ctx->tlsext_ellipticcurvelist_length; + s->ext.supportedgroups_len = ctx->ext.supportedgroups_len; } #endif #ifndef OPENSSL_NO_NEXTPROTONEG - s->next_proto_negotiated = NULL; + s->ext.npn = NULL; #endif - if (s->ctx->alpn_client_proto_list) { - s->alpn_client_proto_list = - OPENSSL_malloc(s->ctx->alpn_client_proto_list_len); - if (s->alpn_client_proto_list == NULL) + if (s->ctx->ext.alpn) { + s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len); + if (s->ext.alpn == NULL) goto err; - memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list, - s->ctx->alpn_client_proto_list_len); - s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len; + memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len); + s->ext.alpn_len = s->ctx->ext.alpn_len; } s->verified_chain = NULL; @@ -642,6 +745,8 @@ SSL *SSL_new(SSL_CTX *ctx) s->method = ctx->method; + s->key_update = SSL_KEY_UPDATE_NONE; + if (!s->method->ssl_new(s)) goto err; @@ -657,6 +762,8 @@ SSL *SSL_new(SSL_CTX *ctx) s->psk_client_callback = ctx->psk_client_callback; s->psk_server_callback = ctx->psk_server_callback; #endif + s->psk_find_session_cb = ctx->psk_find_session_cb; + s->psk_use_session_cb = ctx->psk_use_session_cb; s->job = NULL; @@ -682,7 +789,7 @@ int SSL_up_ref(SSL *s) { int i; - if (CRYPTO_atomic_add(&s->references, 1, &i, s->lock) <= 0) + if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0) return 0; REF_PRINT_COUNT("SSL", s); @@ -739,7 +846,7 @@ int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, { /* * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how - * we can "construct" a session to give us the desired check - ie. to + * we can "construct" a session to give us the desired check - i.e. to * find if there's a session in the hash table that would conflict with * any new session built out of this id/id_len and the ssl_version in use * by this SSL. @@ -838,7 +945,7 @@ int SSL_dane_enable(SSL *s, const char *basedomain) * accepts them and disables host name checks. To avoid side-effects with * invalid input, set the SNI name first. */ - if (s->tlsext_hostname == NULL) { + if (s->ext.hostname == NULL) { if (!SSL_set_tlsext_host_name(s, basedomain)) { SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN); return -1; @@ -965,7 +1072,7 @@ void SSL_free(SSL *s) if (s == NULL) return; - CRYPTO_atomic_add(&s->references, -1, &i, s->lock); + CRYPTO_DOWN_REF(&s->references, &i, s->lock); REF_PRINT_COUNT("SSL", s); if (i > 0) return; @@ -975,6 +1082,7 @@ void SSL_free(SSL *s) dane_final(&s->dane); CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); + /* Ignore return value */ ssl_free_wbio_buffer(s); BIO_free_all(s->wbio); @@ -991,30 +1099,34 @@ void SSL_free(SSL *s) ssl_clear_bad_session(s); SSL_SESSION_free(s->session); } + SSL_SESSION_free(s->psksession); + OPENSSL_free(s->psksession_id); clear_ciphers(s); ssl_cert_free(s->cert); /* Free up if allocated */ - OPENSSL_free(s->tlsext_hostname); - SSL_CTX_free(s->initial_ctx); + OPENSSL_free(s->ext.hostname); + SSL_CTX_free(s->session_ctx); #ifndef OPENSSL_NO_EC - OPENSSL_free(s->tlsext_ecpointformatlist); - OPENSSL_free(s->tlsext_ellipticcurvelist); + OPENSSL_free(s->ext.ecpointformats); + OPENSSL_free(s->ext.supportedgroups); #endif /* OPENSSL_NO_EC */ - sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free); + sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free); #ifndef OPENSSL_NO_OCSP - sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); + sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free); #endif #ifndef OPENSSL_NO_CT SCT_LIST_free(s->scts); - OPENSSL_free(s->tlsext_scts); + OPENSSL_free(s->ext.scts); #endif - OPENSSL_free(s->tlsext_ocsp_resp); - OPENSSL_free(s->alpn_client_proto_list); + OPENSSL_free(s->ext.ocsp.resp); + OPENSSL_free(s->ext.alpn); + OPENSSL_free(s->ext.tls13_cookie); + OPENSSL_free(s->clienthello); - sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); + sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free); sk_X509_pop_free(s->verified_chain, X509_free); @@ -1028,13 +1140,14 @@ void SSL_free(SSL *s) ASYNC_WAIT_CTX_free(s->waitctx); #if !defined(OPENSSL_NO_NEXTPROTONEG) - OPENSSL_free(s->next_proto_negotiated); + OPENSSL_free(s->ext.npn); #endif #ifndef OPENSSL_NO_SRTP sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); #endif + RAND_DRBG_free(s->drbg); CRYPTO_THREAD_lock_free(s->lock); OPENSSL_free(s); @@ -1317,7 +1430,7 @@ int SSL_has_pending(const SSL *s) * data. That data may not result in any application data, or we may fail * to parse the records for some reason. */ - if (SSL_pending(s)) + if (RECORD_LAYER_processed_read_pending(&s->rlayer)) return 1; return RECORD_LAYER_read_pending(&s->rlayer); @@ -1379,7 +1492,7 @@ int SSL_copy_session_id(SSL *t, const SSL *f) return 0; } - CRYPTO_atomic_add(&f->cert->references, 1, &i, f->cert->lock); + CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock); ssl_cert_free(t->cert); t->cert = f->cert; if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) { @@ -1530,6 +1643,47 @@ static int ssl_io_intern(void *vargs) return -1; } +int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes) +{ + if (s->handshake_func == NULL) { + SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED); + return -1; + } + + if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { + s->rwstate = SSL_NOTHING; + return 0; + } + + if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY + || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) { + SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + /* + * If we are a client and haven't received the ServerHello etc then we + * better do that + */ + ossl_statem_check_finish_init(s, 0); + + if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { + struct ssl_async_args args; + int ret; + + args.s = s; + args.buf = buf; + args.num = num; + args.type = READFUNC; + args.f.func_read = s->method->ssl_read; + + ret = ssl_start_async_job(s, &args, ssl_io_intern); + *readbytes = s->asyncrw; + return ret; + } else { + return s->method->ssl_read(s, buf, num, readbytes); + } +} + int SSL_read(SSL *s, void *buf, int num) { int ret; @@ -1540,7 +1694,7 @@ int SSL_read(SSL *s, void *buf, int num) return -1; } - ret = SSL_read_ex(s, buf, (size_t)num, &readbytes); + ret = ssl_read_internal(s, buf, (size_t)num, &readbytes); /* * The cast is safe here because ret should be <= INT_MAX because num is @@ -1553,17 +1707,84 @@ int SSL_read(SSL *s, void *buf, int num) } int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes) +{ + int ret = ssl_read_internal(s, buf, num, readbytes); + + if (ret < 0) + ret = 0; + return ret; +} + +int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) +{ + int ret; + + if (!s->server) { + SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return SSL_READ_EARLY_DATA_ERROR; + } + + switch (s->early_data_state) { + case SSL_EARLY_DATA_NONE: + if (!SSL_in_before(s)) { + SSLerr(SSL_F_SSL_READ_EARLY_DATA, + ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return SSL_READ_EARLY_DATA_ERROR; + } + /* fall through */ + + case SSL_EARLY_DATA_ACCEPT_RETRY: + s->early_data_state = SSL_EARLY_DATA_ACCEPTING; + ret = SSL_accept(s); + if (ret <= 0) { + /* NBIO or error */ + s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY; + return SSL_READ_EARLY_DATA_ERROR; + } + /* fall through */ + + case SSL_EARLY_DATA_READ_RETRY: + if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) { + s->early_data_state = SSL_EARLY_DATA_READING; + ret = SSL_read_ex(s, buf, num, readbytes); + /* + * State machine will update early_data_state to + * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData + * message + */ + if (ret > 0 || (ret <= 0 && s->early_data_state + != SSL_EARLY_DATA_FINISHED_READING)) { + s->early_data_state = SSL_EARLY_DATA_READ_RETRY; + return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS + : SSL_READ_EARLY_DATA_ERROR; + } + } else { + s->early_data_state = SSL_EARLY_DATA_FINISHED_READING; + } + *readbytes = 0; + return SSL_READ_EARLY_DATA_FINISH; + + default: + SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return SSL_READ_EARLY_DATA_ERROR; + } +} + +int SSL_get_early_data_status(const SSL *s) +{ + return s->ext.early_data; +} + +static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes) { if (s->handshake_func == NULL) { - SSLerr(SSL_F_SSL_READ_EX, SSL_R_UNINITIALIZED); + SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED); return -1; } if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { - s->rwstate = SSL_NOTHING; - return (0); + return 0; } - if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { struct ssl_async_args args; int ret; @@ -1572,13 +1793,13 @@ int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes) args.buf = buf; args.num = num; args.type = READFUNC; - args.f.func_read = s->method->ssl_read; + args.f.func_read = s->method->ssl_peek; ret = ssl_start_async_job(s, &args, ssl_io_intern); *readbytes = s->asyncrw; return ret; } else { - return s->method->ssl_read(s, buf, num, readbytes); + return s->method->ssl_peek(s, buf, num, readbytes); } } @@ -1592,7 +1813,7 @@ int SSL_peek(SSL *s, void *buf, int num) return -1; } - ret = SSL_peek_ex(s, buf, (size_t)num, &readbytes); + ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes); /* * The cast is safe here because ret should be <= INT_MAX because num is @@ -1604,31 +1825,53 @@ int SSL_peek(SSL *s, void *buf, int num) return ret; } + int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes) +{ + int ret = ssl_peek_internal(s, buf, num, readbytes); + + if (ret < 0) + ret = 0; + return ret; +} + +int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written) { if (s->handshake_func == NULL) { - SSLerr(SSL_F_SSL_PEEK_EX, SSL_R_UNINITIALIZED); + SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED); return -1; } - if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { - return (0); + if (s->shutdown & SSL_SENT_SHUTDOWN) { + s->rwstate = SSL_NOTHING; + SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN); + return -1; } + + if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY + || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY + || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) { + SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + /* If we are a client and haven't sent the Finished we better do that */ + ossl_statem_check_finish_init(s, 1); + if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { - struct ssl_async_args args; int ret; + struct ssl_async_args args; args.s = s; - args.buf = buf; + args.buf = (void *)buf; args.num = num; - args.type = READFUNC; - args.f.func_read = s->method->ssl_peek; + args.type = WRITEFUNC; + args.f.func_write = s->method->ssl_write; ret = ssl_start_async_job(s, &args, ssl_io_intern); - *readbytes = s->asyncrw; + *written = s->asyncrw; return ret; } else { - return s->method->ssl_peek(s, buf, num, readbytes); + return s->method->ssl_write(s, buf, num, written); } } @@ -1642,7 +1885,7 @@ int SSL_write(SSL *s, const void *buf, int num) return -1; } - ret = SSL_write_ex(s, buf, (size_t)num, &written); + ret = ssl_write_internal(s, buf, (size_t)num, &written); /* * The cast is safe here because ret should be <= INT_MAX because num is @@ -1656,32 +1899,57 @@ int SSL_write(SSL *s, const void *buf, int num) int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written) { - if (s->handshake_func == NULL) { - SSLerr(SSL_F_SSL_WRITE_EX, SSL_R_UNINITIALIZED); - return -1; - } + int ret = ssl_write_internal(s, buf, num, written); - if (s->shutdown & SSL_SENT_SHUTDOWN) { - s->rwstate = SSL_NOTHING; - SSLerr(SSL_F_SSL_WRITE_EX, SSL_R_PROTOCOL_IS_SHUTDOWN); - return (-1); - } + if (ret < 0) + ret = 0; + return ret; +} - if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { - int ret; - struct ssl_async_args args; +int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) +{ + int ret, early_data_state; - args.s = s; - args.buf = (void *)buf; - args.num = num; - args.type = WRITEFUNC; - args.f.func_write = s->method->ssl_write; + switch (s->early_data_state) { + case SSL_EARLY_DATA_NONE: + if (s->server + || !SSL_in_before(s) + || ((s->session == NULL || s->session->ext.max_early_data == 0) + && (s->psk_use_session_cb == NULL))) { + SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, + ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + /* fall through */ + + case SSL_EARLY_DATA_CONNECT_RETRY: + s->early_data_state = SSL_EARLY_DATA_CONNECTING; + ret = SSL_connect(s); + if (ret <= 0) { + /* NBIO or error */ + s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY; + return 0; + } + /* fall through */ - ret = ssl_start_async_job(s, &args, ssl_io_intern); - *written = s->asyncrw; + case SSL_EARLY_DATA_WRITE_RETRY: + s->early_data_state = SSL_EARLY_DATA_WRITING; + ret = SSL_write_ex(s, buf, num, written); + s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY; return ret; - } else { - return s->method->ssl_write(s, buf, num, written); + + case SSL_EARLY_DATA_FINISHED_READING: + case SSL_EARLY_DATA_READ_RETRY: + early_data_state = s->early_data_state; + /* We are a server writing to an unauthenticated client */ + s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING; + ret = SSL_write_ex(s, buf, num, written); + s->early_data_state = early_data_state; + return ret; + + default: + SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; } } @@ -1717,11 +1985,52 @@ int SSL_shutdown(SSL *s) } } +int SSL_key_update(SSL *s, int updatetype) +{ + /* + * TODO(TLS1.3): How will applications know whether TLSv1.3 has been + * negotiated, and that it is appropriate to call SSL_key_update() instead + * of SSL_renegotiate(). + */ + if (!SSL_IS_TLS13(s)) { + SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION); + return 0; + } + + if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED + && updatetype != SSL_KEY_UPDATE_REQUESTED) { + SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE); + return 0; + } + + if (!SSL_is_init_finished(s)) { + SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT); + return 0; + } + + ossl_statem_set_in_init(s, 1); + s->key_update = updatetype; + return 1; +} + +int SSL_get_key_update_type(SSL *s) +{ + return s->key_update; +} + int SSL_renegotiate(SSL *s) { - if (s->renegotiate == 0) - s->renegotiate = 1; + if (SSL_IS_TLS13(s)) { + SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION); + return 0; + } + if ((s->options & SSL_OP_NO_RENEGOTIATION)) { + SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION); + return 0; + } + + s->renegotiate = 1; s->new_session = 1; return (s->method->ssl_renegotiate(s)); @@ -1729,9 +2038,17 @@ int SSL_renegotiate(SSL *s) int SSL_renegotiate_abbreviated(SSL *s) { - if (s->renegotiate == 0) - s->renegotiate = 1; + if (SSL_IS_TLS13(s)) { + SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION); + return 0; + } + + if ((s->options & SSL_OP_NO_RENEGOTIATION)) { + SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION); + return 0; + } + s->renegotiate = 1; s->new_session = 0; return (s->method->ssl_renegotiate(s)); @@ -1820,11 +2137,17 @@ long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) else return 0; case SSL_CTRL_SET_MIN_PROTO_VERSION: - return ssl_set_version_bound(s->ctx->method->version, (int)larg, - &s->min_proto_version); + return ssl_check_allowed_versions(larg, s->max_proto_version) + && ssl_set_version_bound(s->ctx->method->version, (int)larg, + &s->min_proto_version); + case SSL_CTRL_GET_MIN_PROTO_VERSION: + return s->min_proto_version; case SSL_CTRL_SET_MAX_PROTO_VERSION: - return ssl_set_version_bound(s->ctx->method->version, (int)larg, - &s->max_proto_version); + return ssl_check_allowed_versions(s->min_proto_version, larg) + && ssl_set_version_bound(s->ctx->method->version, (int)larg, + &s->max_proto_version); + case SSL_CTRL_GET_MAX_PROTO_VERSION: + return s->max_proto_version; default: return (s->method->ssl_ctrl(s, cmd, larg, parg)); } @@ -1857,8 +2180,8 @@ long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) if (ctx == NULL) { switch (cmd) { #ifndef OPENSSL_NO_EC - case SSL_CTRL_SET_CURVES_LIST: - return tls1_set_curves_list(NULL, NULL, parg); + case SSL_CTRL_SET_GROUPS_LIST: + return tls1_set_groups_list(NULL, NULL, parg); #endif case SSL_CTRL_SET_SIGALGS_LIST: case SSL_CTRL_SET_CLIENT_SIGALGS_LIST: @@ -1954,11 +2277,17 @@ long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) case SSL_CTRL_CLEAR_CERT_FLAGS: return (ctx->cert->cert_flags &= ~larg); case SSL_CTRL_SET_MIN_PROTO_VERSION: - return ssl_set_version_bound(ctx->method->version, (int)larg, - &ctx->min_proto_version); + return ssl_check_allowed_versions(larg, ctx->max_proto_version) + && ssl_set_version_bound(ctx->method->version, (int)larg, + &ctx->min_proto_version); + case SSL_CTRL_GET_MIN_PROTO_VERSION: + return ctx->min_proto_version; case SSL_CTRL_SET_MAX_PROTO_VERSION: - return ssl_set_version_bound(ctx->method->version, (int)larg, - &ctx->max_proto_version); + return ssl_check_allowed_versions(ctx->min_proto_version, larg) + && ssl_set_version_bound(ctx->method->version, (int)larg, + &ctx->max_proto_version); + case SSL_CTRL_GET_MAX_PROTO_VERSION: + return ctx->max_proto_version; default: return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); } @@ -2029,7 +2358,7 @@ STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s) ssl_set_client_disabled(s); for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i); - if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) { + if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) { if (!sk) sk = sk_SSL_CIPHER_new_null(); if (!sk) @@ -2150,7 +2479,7 @@ char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len) *p = '\0'; return buf; } - memcpy(p, c->name, n + 1); + strcpy(p, c->name); p += n; *(p++) = ':'; len -= n + 1; @@ -2168,15 +2497,15 @@ const char *SSL_get_servername(const SSL *s, const int type) if (type != TLSEXT_NAMETYPE_host_name) return NULL; - return s->session && !s->tlsext_hostname ? - s->session->tlsext_hostname : s->tlsext_hostname; + return s->session && !s->ext.hostname ? + s->session->ext.hostname : s->ext.hostname; } int SSL_get_servername_type(const SSL *s) { if (s->session - && (!s->tlsext_hostname ? s->session-> - tlsext_hostname : s->tlsext_hostname)) + && (!s->ext.hostname ? s->session-> + ext.hostname : s->ext.hostname)) return TLSEXT_NAMETYPE_host_name; return -1; } @@ -2251,16 +2580,16 @@ int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len) { - *data = s->next_proto_negotiated; + *data = s->ext.npn; if (!*data) { *len = 0; } else { - *len = (unsigned int)s->next_proto_negotiated_len; + *len = (unsigned int)s->ext.npn_len; } } /* - * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when + * SSL_CTX_set_npn_advertised_cb sets a callback that is called when * a TLS server needs a list of supported protocols for Next Protocol * Negotiation. The returned list must be in wire format. The list is * returned by setting |out| to point to it and |outlen| to its length. This @@ -2269,15 +2598,12 @@ void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, * wishes to advertise. Otherwise, no such extension will be included in the * ServerHello. */ -void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, - int (*cb) (SSL *ssl, - const unsigned char - **out, - unsigned int *outlen, - void *arg), void *arg) +void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx, + SSL_CTX_npn_advertised_cb_func cb, + void *arg) { - ctx->next_protos_advertised_cb = cb; - ctx->next_protos_advertised_cb_arg = arg; + ctx->ext.npn_advertised_cb = cb; + ctx->ext.npn_advertised_cb_arg = arg; } /* @@ -2290,15 +2616,12 @@ void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, * select a protocol. It is fatal to the connection if this callback returns * a value other than SSL_TLSEXT_ERR_OK. */ -void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, - int (*cb) (SSL *s, unsigned char **out, - unsigned char *outlen, - const unsigned char *in, - unsigned int inlen, - void *arg), void *arg) +void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx, + SSL_CTX_npn_select_cb_func cb, + void *arg) { - ctx->next_proto_select_cb = cb; - ctx->next_proto_select_cb_arg = arg; + ctx->ext.npn_select_cb = cb; + ctx->ext.npn_select_cb_arg = arg; } #endif @@ -2310,13 +2633,13 @@ void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, unsigned int protos_len) { - OPENSSL_free(ctx->alpn_client_proto_list); - ctx->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len); - if (ctx->alpn_client_proto_list == NULL) { + OPENSSL_free(ctx->ext.alpn); + ctx->ext.alpn = OPENSSL_memdup(protos, protos_len); + if (ctx->ext.alpn == NULL) { SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE); return 1; } - ctx->alpn_client_proto_list_len = protos_len; + ctx->ext.alpn_len = protos_len; return 0; } @@ -2329,13 +2652,13 @@ int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, unsigned int protos_len) { - OPENSSL_free(ssl->alpn_client_proto_list); - ssl->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len); - if (ssl->alpn_client_proto_list == NULL) { + OPENSSL_free(ssl->ext.alpn); + ssl->ext.alpn = OPENSSL_memdup(protos, protos_len); + if (ssl->ext.alpn == NULL) { SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE); return 1; } - ssl->alpn_client_proto_list_len = protos_len; + ssl->ext.alpn_len = protos_len; return 0; } @@ -2346,20 +2669,16 @@ int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, * from the client's list of offered protocols. */ void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx, - int (*cb) (SSL *ssl, - const unsigned char **out, - unsigned char *outlen, - const unsigned char *in, - unsigned int inlen, - void *arg), void *arg) + SSL_CTX_alpn_select_cb_func cb, + void *arg) { - ctx->alpn_select_cb = cb; - ctx->alpn_select_cb_arg = arg; + ctx->ext.alpn_select_cb = cb; + ctx->ext.alpn_select_cb_arg = arg; } /* - * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from - * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name + * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|. + * On return it sets |*data| to point to |*len| bytes of protocol name * (not including the leading length-prefix byte). If the server didn't * respond with a negotiated protocol then |*len| will be zero. */ @@ -2377,26 +2696,34 @@ void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, const char *label, size_t llen, - const unsigned char *p, size_t plen, + const unsigned char *context, size_t contextlen, int use_context) { if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER) return -1; return s->method->ssl3_enc->export_keying_material(s, out, olen, label, - llen, p, plen, - use_context); + llen, context, + contextlen, use_context); } static unsigned long ssl_session_hash(const SSL_SESSION *a) { + const unsigned char *session_id = a->session_id; unsigned long l; + unsigned char tmp_storage[4]; + + if (a->session_id_length < sizeof(tmp_storage)) { + memset(tmp_storage, 0, sizeof(tmp_storage)); + memcpy(tmp_storage, a->session_id, a->session_id_length); + session_id = tmp_storage; + } l = (unsigned long) - ((unsigned int)a->session_id[0]) | - ((unsigned int)a->session_id[1] << 8L) | - ((unsigned long)a->session_id[2] << 16L) | - ((unsigned long)a->session_id[3] << 24L); + ((unsigned long)session_id[0]) | + ((unsigned long)session_id[1] << 8L) | + ((unsigned long)session_id[2] << 16L) | + ((unsigned long)session_id[3] << 24L); return (l); } @@ -2435,11 +2762,6 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL)) return NULL; - if (FIPS_mode() && (meth->version < TLS1_VERSION)) { - SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE); - return NULL; - } - if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); goto err; @@ -2499,7 +2821,7 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) goto err2; } - if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) + if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) goto err; if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) @@ -2513,12 +2835,12 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; /* Setup RFC5077 ticket keys */ - if ((RAND_bytes(ret->tlsext_tick_key_name, - sizeof(ret->tlsext_tick_key_name)) <= 0) - || (RAND_bytes(ret->tlsext_tick_hmac_key, - sizeof(ret->tlsext_tick_hmac_key)) <= 0) - || (RAND_bytes(ret->tlsext_tick_aes_key, - sizeof(ret->tlsext_tick_aes_key)) <= 0)) + if ((RAND_bytes(ret->ext.tick_key_name, + sizeof(ret->ext.tick_key_name)) <= 0) + || (RAND_bytes(ret->ext.tick_hmac_key, + sizeof(ret->ext.tick_hmac_key)) <= 0) + || (RAND_bytes(ret->ext.tick_aes_key, + sizeof(ret->ext.tick_aes_key)) <= 0)) ret->options |= SSL_OP_NO_TICKET; #ifndef OPENSSL_NO_SRP @@ -2556,7 +2878,13 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) */ ret->options |= SSL_OP_NO_COMPRESSION; - ret->tlsext_status_type = -1; + ret->ext.status_type = TLSEXT_STATUSTYPE_nothing; + + /* + * Default max early data is a fully loaded single record. Could be split + * across multiple records in practice + */ + ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH; return ret; err: @@ -2570,7 +2898,7 @@ int SSL_CTX_up_ref(SSL_CTX *ctx) { int i; - if (CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock) <= 0) + if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0) return 0; REF_PRINT_COUNT("SSL_CTX", ctx); @@ -2585,7 +2913,7 @@ void SSL_CTX_free(SSL_CTX *a) if (a == NULL) return; - CRYPTO_atomic_add(&a->references, -1, &i, a->lock); + CRYPTO_DOWN_REF(&a->references, &i, a->lock); REF_PRINT_COUNT("SSL_CTX", a); if (i > 0) return; @@ -2615,7 +2943,7 @@ void SSL_CTX_free(SSL_CTX *a) sk_SSL_CIPHER_free(a->cipher_list); sk_SSL_CIPHER_free(a->cipher_list_by_id); ssl_cert_free(a->cert); - sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); + sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free); sk_X509_pop_free(a->extra_certs, X509_free); a->comp_methods = NULL; #ifndef OPENSSL_NO_SRTP @@ -2629,10 +2957,10 @@ void SSL_CTX_free(SSL_CTX *a) #endif #ifndef OPENSSL_NO_EC - OPENSSL_free(a->tlsext_ecpointformatlist); - OPENSSL_free(a->tlsext_ellipticcurvelist); + OPENSSL_free(a->ext.ecpointformats); + OPENSSL_free(a->ext.supportedgroups); #endif - OPENSSL_free(a->alpn_client_proto_list); + OPENSSL_free(a->ext.alpn); CRYPTO_THREAD_lock_free(a->lock); @@ -2711,16 +3039,12 @@ void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg) void ssl_set_masks(SSL *s) { -#if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST) - CERT_PKEY *cpk; -#endif CERT *c = s->cert; uint32_t *pvalid = s->s3->tmp.valid_flags; int rsa_enc, rsa_sign, dh_tmp, dsa_sign; unsigned long mask_k, mask_a; #ifndef OPENSSL_NO_EC int have_ecc_cert, ecdsa_ok; - X509 *x = NULL; #endif if (c == NULL) return; @@ -2731,9 +3055,9 @@ void ssl_set_masks(SSL *s) dh_tmp = 0; #endif - rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID; - rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN; - dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN; + rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID; + rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID; + dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID; #ifndef OPENSSL_NO_EC have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID; #endif @@ -2746,18 +3070,15 @@ void ssl_set_masks(SSL *s) #endif #ifndef OPENSSL_NO_GOST - cpk = &(c->pkeys[SSL_PKEY_GOST12_512]); - if (cpk->x509 != NULL && cpk->privatekey != NULL) { + if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) { mask_k |= SSL_kGOST; mask_a |= SSL_aGOST12; } - cpk = &(c->pkeys[SSL_PKEY_GOST12_256]); - if (cpk->x509 != NULL && cpk->privatekey != NULL) { + if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) { mask_k |= SSL_kGOST; mask_a |= SSL_aGOST12; } - cpk = &(c->pkeys[SSL_PKEY_GOST01]); - if (cpk->x509 != NULL && cpk->privatekey != NULL) { + if (ssl_has_cert(s, SSL_PKEY_GOST01)) { mask_k |= SSL_kGOST; mask_a |= SSL_aGOST01; } @@ -2769,9 +3090,15 @@ void ssl_set_masks(SSL *s) if (dh_tmp) mask_k |= SSL_kDHE; - if (rsa_enc || rsa_sign) { + /* + * If we only have an RSA-PSS certificate allow RSA authentication + * if TLS 1.2 and peer supports it. + */ + + if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN) + && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN + && TLS1_get_version(s) == TLS1_2_VERSION)) mask_a |= SSL_aRSA; - } if (dsa_sign) { mask_a |= SSL_aDSS; @@ -2786,15 +3113,18 @@ void ssl_set_masks(SSL *s) #ifndef OPENSSL_NO_EC if (have_ecc_cert) { uint32_t ex_kusage; - cpk = &c->pkeys[SSL_PKEY_ECC]; - x = cpk->x509; - ex_kusage = X509_get_key_usage(x); + ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509); ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE; if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN)) ecdsa_ok = 0; if (ecdsa_ok) mask_a |= SSL_aECDSA; } + /* Allow Ed25519 for TLS 1.2 if peer supports it */ + if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519) + && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN + && TLS1_get_version(s) == TLS1_2_VERSION) + mask_a |= SSL_aECDSA; #endif #ifndef OPENSSL_NO_EC @@ -2833,93 +3163,17 @@ int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) #endif -static int ssl_get_server_cert_index(const SSL *s) -{ - int idx; - idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher); - if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509) - idx = SSL_PKEY_RSA_SIGN; - if (idx == SSL_PKEY_GOST_EC) { - if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509) - idx = SSL_PKEY_GOST12_512; - else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509) - idx = SSL_PKEY_GOST12_256; - else if (s->cert->pkeys[SSL_PKEY_GOST01].x509) - idx = SSL_PKEY_GOST01; - else - idx = -1; - } - if (idx == -1) - SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR); - return idx; -} - -CERT_PKEY *ssl_get_server_send_pkey(SSL *s) -{ - CERT *c; - int i; - - c = s->cert; - if (!s->s3 || !s->s3->tmp.new_cipher) - return NULL; - ssl_set_masks(s); - - i = ssl_get_server_cert_index(s); - - /* This may or may not be an error. */ - if (i < 0) - return NULL; - - /* May be NULL. */ - return &c->pkeys[i]; -} - -EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, - const EVP_MD **pmd) -{ - unsigned long alg_a; - CERT *c; - int idx = -1; - - alg_a = cipher->algorithm_auth; - c = s->cert; - - if ((alg_a & SSL_aDSS) && (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) - idx = SSL_PKEY_DSA_SIGN; - else if (alg_a & SSL_aRSA) { - if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) - idx = SSL_PKEY_RSA_SIGN; - else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) - idx = SSL_PKEY_RSA_ENC; - } else if ((alg_a & SSL_aECDSA) && - (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) - idx = SSL_PKEY_ECC; - if (idx == -1) { - SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); - return (NULL); - } - if (pmd) - *pmd = s->s3->tmp.md[idx]; - return c->pkeys[idx].privatekey; -} - int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, size_t *serverinfo_length) { - CERT *c = NULL; - int i = 0; + CERT_PKEY *cpk = s->s3->tmp.cert; *serverinfo_length = 0; - c = s->cert; - i = ssl_get_server_cert_index(s); - - if (i == -1) - return 0; - if (c->pkeys[i].serverinfo == NULL) + if (cpk == NULL || cpk->serverinfo == NULL) return 0; - *serverinfo = c->pkeys[i].serverinfo; - *serverinfo_length = c->pkeys[i].serverinfo_length; + *serverinfo = cpk->serverinfo; + *serverinfo_length = cpk->serverinfo_length; return 1; } @@ -2935,10 +3189,11 @@ void ssl_update_cache(SSL *s, int mode) return; i = s->session_ctx->session_cache_mode; - if ((i & mode) && (!s->hit) - && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) + if ((i & mode) != 0 + && (!s->hit || SSL_IS_TLS13(s)) + && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0 || SSL_CTX_add_session(s->session_ctx, s->session)) - && (s->session_ctx->new_session_cb != NULL)) { + && s->session_ctx->new_session_cb != NULL) { SSL_SESSION_up_ref(s->session); if (!s->session_ctx->new_session_cb(s, s->session)) SSL_SESSION_free(s->session); @@ -3035,10 +3290,7 @@ int SSL_get_error(const SSL *s, int i) } if (SSL_want_write(s)) { - /* - * Access wbio directly - in order to use the buffered bio if - * present - */ + /* Access wbio directly - in order to use the buffered bio if present */ bio = s->wbio; if (BIO_should_write(bio)) return (SSL_ERROR_WANT_WRITE); @@ -3057,15 +3309,14 @@ int SSL_get_error(const SSL *s, int i) return (SSL_ERROR_SYSCALL); } } - if (SSL_want_x509_lookup(s)) { + if (SSL_want_x509_lookup(s)) return (SSL_ERROR_WANT_X509_LOOKUP); - } - if (SSL_want_async(s)) { + if (SSL_want_async(s)) return SSL_ERROR_WANT_ASYNC; - } - if (SSL_want_async_job(s)) { + if (SSL_want_async_job(s)) return SSL_ERROR_WANT_ASYNC_JOB; - } + if (SSL_want_client_hello_cb(s)) + return SSL_ERROR_WANT_CLIENT_HELLO_CB; if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) @@ -3094,7 +3345,15 @@ int SSL_do_handshake(SSL *s) return -1; } - s->method->ssl_renegotiate_check(s); + ossl_statem_check_finish_init(s, -1); + + s->method->ssl_renegotiate_check(s, 0); + + if (SSL_is_server(s)) { + /* clear SNI settings at server-side */ + OPENSSL_free(s->ext.hostname); + s->ext.hostname = NULL; + } if (SSL_in_init(s) || SSL_in_before(s)) { if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) { @@ -3199,7 +3458,7 @@ SSL *SSL_dup(SSL *s) /* If we're not quiescent, just up_ref! */ if (!SSL_in_init(s) || !SSL_in_before(s)) { - CRYPTO_atomic_add(&s->references, 1, &i, s->lock); + CRYPTO_UP_REF(&s->references, &i, s->lock); return s; } @@ -3298,10 +3557,10 @@ SSL *SSL_dup(SSL *s) goto err; /* Dup the client_CA list */ - if (s->client_CA != NULL) { - if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) + if (s->ca_names != NULL) { + if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL) goto err; - ret->client_CA = sk; + ret->ca_names = sk; for (i = 0; i < sk_X509_NAME_num(sk); i++) { xn = sk_X509_NAME_value(sk, i); if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { @@ -3374,6 +3633,11 @@ const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) return (NULL); } +const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s) +{ + return s->s3->tmp.new_cipher; +} + const COMP_METHOD *SSL_get_current_compression(SSL *s) { #ifndef OPENSSL_NO_COMP @@ -3413,16 +3677,19 @@ int ssl_init_wbio_buffer(SSL *s) return 1; } -void ssl_free_wbio_buffer(SSL *s) +int ssl_free_wbio_buffer(SSL *s) { /* callers ensure s is never null */ if (s->bbio == NULL) - return; + return 1; s->wbio = BIO_pop(s->wbio); - assert(s->wbio != NULL); + if (!ossl_assert(s->wbio != NULL)) + return 0; BIO_free(s->bbio); s->bbio = NULL; + + return 1; } void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) @@ -3476,11 +3743,17 @@ SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) if (ssl->ctx == ctx) return ssl->ctx; if (ctx == NULL) - ctx = ssl->initial_ctx; + ctx = ssl->session_ctx; new_cert = ssl_cert_dup(ctx->cert); if (new_cert == NULL) { return NULL; } + + if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) { + ssl_cert_free(new_cert); + return NULL; + } + ssl_cert_free(ssl->cert); ssl->cert = new_cert; @@ -3488,7 +3761,8 @@ SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), * so setter APIs must prevent invalid lengths from entering the system. */ - OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); + if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx))) + return NULL; /* * If the session ID context matches that of the parent SSL_CTX, @@ -3609,6 +3883,18 @@ size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, return outlen; } +int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in, + size_t len) +{ + if (len > sizeof(sess->master_key)) + return 0; + + memcpy(sess->master_key, in, len); + sess->master_key_length = len; + return 1; +} + + int SSL_set_ex_data(SSL *s, int idx, void *arg) { return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); @@ -3629,11 +3915,6 @@ void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) return (CRYPTO_get_ex_data(&s->ex_data, idx)); } -int ssl_ok(SSL *s) -{ - return (1); -} - X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) { return (ctx->cert_store); @@ -3728,51 +4009,49 @@ const char *SSL_get_psk_identity(const SSL *s) return (s->session->psk_identity); } -void SSL_set_psk_client_callback(SSL *s, - unsigned int (*cb) (SSL *ssl, - const char *hint, - char *identity, - unsigned int - max_identity_len, - unsigned char *psk, - unsigned int max_psk_len)) +void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb) { s->psk_client_callback = cb; } -void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, - unsigned int (*cb) (SSL *ssl, - const char *hint, - char *identity, - unsigned int - max_identity_len, - unsigned char *psk, - unsigned int - max_psk_len)) +void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb) { ctx->psk_client_callback = cb; } -void SSL_set_psk_server_callback(SSL *s, - unsigned int (*cb) (SSL *ssl, - const char *identity, - unsigned char *psk, - unsigned int max_psk_len)) +void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb) { s->psk_server_callback = cb; } -void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, - unsigned int (*cb) (SSL *ssl, - const char *identity, - unsigned char *psk, - unsigned int - max_psk_len)) +void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb) { ctx->psk_server_callback = cb; } #endif +void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb) +{ + s->psk_find_session_cb = cb; +} + +void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx, + SSL_psk_find_session_cb_func cb) +{ + ctx->psk_find_session_cb = cb; +} + +void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) +{ + s->psk_use_session_cb = cb; +} + +void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx, + SSL_psk_use_session_cb_func cb) +{ + ctx->psk_use_session_cb = cb; +} + void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb) (int write_p, int version, int content_type, const void *buf, @@ -3806,11 +4085,69 @@ void SSL_set_not_resumable_session_callback(SSL *ssl, (void (*)(void))cb); } +void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx, + size_t (*cb) (SSL *ssl, int type, + size_t len, void *arg)) +{ + ctx->record_padding_cb = cb; +} + +void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg) +{ + ctx->record_padding_arg = arg; +} + +void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx) +{ + return ctx->record_padding_arg; +} + +int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size) +{ + /* block size of 0 or 1 is basically no padding */ + if (block_size == 1) + ctx->block_padding = 0; + else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH) + ctx->block_padding = block_size; + else + return 0; + return 1; +} + +void SSL_set_record_padding_callback(SSL *ssl, + size_t (*cb) (SSL *ssl, int type, + size_t len, void *arg)) +{ + ssl->record_padding_cb = cb; +} + +void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg) +{ + ssl->record_padding_arg = arg; +} + +void *SSL_get_record_padding_callback_arg(SSL *ssl) +{ + return ssl->record_padding_arg; +} + +int SSL_set_block_padding(SSL *ssl, size_t block_size) +{ + /* block size of 0 or 1 is basically no padding */ + if (block_size == 1) + ssl->block_padding = 0; + else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH) + ssl->block_padding = block_size; + else + return 0; + return 1; +} + /* * Allocates new EVP_MD_CTX and sets pointer to it into given pointer * variable, freeing EVP_MD_CTX previously stored in that variable, if any. - * If EVP_MD pointer is passed, initializes ctx with this md Returns newly - * allocated ctx; + * If EVP_MD pointer is passed, initializes ctx with this |md|. + * Returns the newly allocated ctx; */ EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) @@ -3828,8 +4165,7 @@ EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) void ssl_clear_hash_ctx(EVP_MD_CTX **hash) { - if (*hash) - EVP_MD_CTX_free(*hash); + EVP_MD_CTX_free(*hash); *hash = NULL; } @@ -3866,7 +4202,7 @@ int SSL_session_reused(SSL *s) return s->hit; } -int SSL_is_server(SSL *s) +int SSL_is_server(const SSL *s) { return s->server; } @@ -4041,9 +4377,9 @@ static int ct_extract_tls_extension_scts(SSL *s) { int scts_extracted = 0; - if (s->tlsext_scts != NULL) { - const unsigned char *p = s->tlsext_scts; - STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len); + if (s->ext.scts != NULL) { + const unsigned char *p = s->ext.scts; + STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len); scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION); @@ -4071,11 +4407,11 @@ static int ct_extract_ocsp_response_scts(SSL *s) STACK_OF(SCT) *scts = NULL; int i; - if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0) + if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0) goto err; - p = s->tlsext_ocsp_resp; - rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->tlsext_ocsp_resplen); + p = s->ext.ocsp.resp; + rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len); if (rsp == NULL) goto err; @@ -4279,6 +4615,8 @@ int ssl_validate_ct(SSL *s) CT_POLICY_EVAL_CTX_set1_cert(ctx, cert); CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer); CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store); + CT_POLICY_EVAL_CTX_set_time( + ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000); scts = SSL_get0_peer_scts(s); @@ -4374,4 +4712,417 @@ const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx) return ctx->ctlog_store; } -#endif +#endif /* OPENSSL_NO_CT */ + +void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb, + void *arg) +{ + c->client_hello_cb = cb; + c->client_hello_cb_arg = arg; +} + +int SSL_client_hello_isv2(SSL *s) +{ + if (s->clienthello == NULL) + return 0; + return s->clienthello->isv2; +} + +unsigned int SSL_client_hello_get0_legacy_version(SSL *s) +{ + if (s->clienthello == NULL) + return 0; + return s->clienthello->legacy_version; +} + +size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out) +{ + if (s->clienthello == NULL) + return 0; + if (out != NULL) + *out = s->clienthello->random; + return SSL3_RANDOM_SIZE; +} + +size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out) +{ + if (s->clienthello == NULL) + return 0; + if (out != NULL) + *out = s->clienthello->session_id; + return s->clienthello->session_id_len; +} + +size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out) +{ + if (s->clienthello == NULL) + return 0; + if (out != NULL) + *out = PACKET_data(&s->clienthello->ciphersuites); + return PACKET_remaining(&s->clienthello->ciphersuites); +} + +size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out) +{ + if (s->clienthello == NULL) + return 0; + if (out != NULL) + *out = s->clienthello->compressions; + return s->clienthello->compressions_len; +} + +int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen) +{ + RAW_EXTENSION *ext; + int *present; + size_t num = 0, i; + + if (s->clienthello == NULL || out == NULL || outlen == NULL) + return 0; + for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) { + ext = s->clienthello->pre_proc_exts + i; + if (ext->present) + num++; + } + present = OPENSSL_malloc(sizeof(*present) * num); + if (present == NULL) + return 0; + for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) { + ext = s->clienthello->pre_proc_exts + i; + if (ext->present) { + if (ext->received_order >= num) + goto err; + present[ext->received_order] = ext->type; + } + } + *out = present; + *outlen = num; + return 1; + err: + OPENSSL_free(present); + return 0; +} + +int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out, + size_t *outlen) +{ + size_t i; + RAW_EXTENSION *r; + + if (s->clienthello == NULL) + return 0; + for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) { + r = s->clienthello->pre_proc_exts + i; + if (r->present && r->type == type) { + if (out != NULL) + *out = PACKET_data(&r->data); + if (outlen != NULL) + *outlen = PACKET_remaining(&r->data); + return 1; + } + } + return 0; +} + +int SSL_free_buffers(SSL *ssl) +{ + RECORD_LAYER *rl = &ssl->rlayer; + + if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl)) + return 0; + + RECORD_LAYER_release(rl); + return 1; +} + +int SSL_alloc_buffers(SSL *ssl) +{ + return ssl3_setup_buffers(ssl); +} + +void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) +{ + ctx->keylog_callback = cb; +} + +SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) +{ + return ctx->keylog_callback; +} + +static int nss_keylog_int(const char *prefix, + SSL *ssl, + const uint8_t *parameter_1, + size_t parameter_1_len, + const uint8_t *parameter_2, + size_t parameter_2_len) +{ + char *out = NULL; + char *cursor = NULL; + size_t out_len = 0; + size_t i; + size_t prefix_len; + + if (ssl->ctx->keylog_callback == NULL) return 1; + + /* + * Our output buffer will contain the following strings, rendered with + * space characters in between, terminated by a NULL character: first the + * prefix, then the first parameter, then the second parameter. The + * meaning of each parameter depends on the specific key material being + * logged. Note that the first and second parameters are encoded in + * hexadecimal, so we need a buffer that is twice their lengths. + */ + prefix_len = strlen(prefix); + out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3; + if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) { + SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE); + return 0; + } + + strcpy(cursor, prefix); + cursor += prefix_len; + *cursor++ = ' '; + + for (i = 0; i < parameter_1_len; i++) { + sprintf(cursor, "%02x", parameter_1[i]); + cursor += 2; + } + *cursor++ = ' '; + + for (i = 0; i < parameter_2_len; i++) { + sprintf(cursor, "%02x", parameter_2[i]); + cursor += 2; + } + *cursor = '\0'; + + ssl->ctx->keylog_callback(ssl, (const char *)out); + OPENSSL_free(out); + return 1; + +} + +int ssl_log_rsa_client_key_exchange(SSL *ssl, + const uint8_t *encrypted_premaster, + size_t encrypted_premaster_len, + const uint8_t *premaster, + size_t premaster_len) +{ + if (encrypted_premaster_len < 8) { + SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); + return 0; + } + + /* We only want the first 8 bytes of the encrypted premaster as a tag. */ + return nss_keylog_int("RSA", + ssl, + encrypted_premaster, + 8, + premaster, + premaster_len); +} + +int ssl_log_secret(SSL *ssl, + const char *label, + const uint8_t *secret, + size_t secret_len) +{ + return nss_keylog_int(label, + ssl, + ssl->s3->client_random, + SSL3_RANDOM_SIZE, + secret, + secret_len); +} + +#define SSLV2_CIPHER_LEN 3 + +int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format, + int *al) +{ + int n; + + n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN; + + if (PACKET_remaining(cipher_suites) == 0) { + SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED); + *al = SSL_AD_ILLEGAL_PARAMETER; + return 0; + } + + if (PACKET_remaining(cipher_suites) % n != 0) { + SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, + SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); + *al = SSL_AD_DECODE_ERROR; + return 0; + } + + OPENSSL_free(s->s3->tmp.ciphers_raw); + s->s3->tmp.ciphers_raw = NULL; + s->s3->tmp.ciphers_rawlen = 0; + + if (sslv2format) { + size_t numciphers = PACKET_remaining(cipher_suites) / n; + PACKET sslv2ciphers = *cipher_suites; + unsigned int leadbyte; + unsigned char *raw; + + /* + * We store the raw ciphers list in SSLv3+ format so we need to do some + * preprocessing to convert the list first. If there are any SSLv2 only + * ciphersuites with a non-zero leading byte then we are going to + * slightly over allocate because we won't store those. But that isn't a + * problem. + */ + raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN); + s->s3->tmp.ciphers_raw = raw; + if (raw == NULL) { + *al = SSL_AD_INTERNAL_ERROR; + goto err; + } + for (s->s3->tmp.ciphers_rawlen = 0; + PACKET_remaining(&sslv2ciphers) > 0; + raw += TLS_CIPHER_LEN) { + if (!PACKET_get_1(&sslv2ciphers, &leadbyte) + || (leadbyte == 0 + && !PACKET_copy_bytes(&sslv2ciphers, raw, + TLS_CIPHER_LEN)) + || (leadbyte != 0 + && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) { + *al = SSL_AD_DECODE_ERROR; + OPENSSL_free(s->s3->tmp.ciphers_raw); + s->s3->tmp.ciphers_raw = NULL; + s->s3->tmp.ciphers_rawlen = 0; + goto err; + } + if (leadbyte == 0) + s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN; + } + } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw, + &s->s3->tmp.ciphers_rawlen)) { + *al = SSL_AD_INTERNAL_ERROR; + goto err; + } + return 1; + err: + return 0; +} + +int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len, + int isv2format, STACK_OF(SSL_CIPHER) **sk, + STACK_OF(SSL_CIPHER) **scsvs) +{ + int alert; + PACKET pkt; + + if (!PACKET_buf_init(&pkt, bytes, len)) + return 0; + return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert); +} + +int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites, + STACK_OF(SSL_CIPHER) **skp, + STACK_OF(SSL_CIPHER) **scsvs_out, + int sslv2format, int *al) +{ + const SSL_CIPHER *c; + STACK_OF(SSL_CIPHER) *sk = NULL; + STACK_OF(SSL_CIPHER) *scsvs = NULL; + int n; + /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */ + unsigned char cipher[SSLV2_CIPHER_LEN]; + + n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN; + + if (PACKET_remaining(cipher_suites) == 0) { + SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED); + *al = SSL_AD_ILLEGAL_PARAMETER; + return 0; + } + + if (PACKET_remaining(cipher_suites) % n != 0) { + SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, + SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); + *al = SSL_AD_DECODE_ERROR; + return 0; + } + + sk = sk_SSL_CIPHER_new_null(); + scsvs = sk_SSL_CIPHER_new_null(); + if (sk == NULL || scsvs == NULL) { + SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); + *al = SSL_AD_INTERNAL_ERROR; + goto err; + } + + while (PACKET_copy_bytes(cipher_suites, cipher, n)) { + /* + * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the + * first byte set to zero, while true SSLv2 ciphers have a non-zero + * first byte. We don't support any true SSLv2 ciphers, so skip them. + */ + if (sslv2format && cipher[0] != '\0') + continue; + + /* For SSLv2-compat, ignore leading 0-byte. */ + c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1); + if (c != NULL) { + if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) || + (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) { + SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); + *al = SSL_AD_INTERNAL_ERROR; + goto err; + } + } + } + if (PACKET_remaining(cipher_suites) > 0) { + *al = SSL_AD_DECODE_ERROR; + SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH); + goto err; + } + + if (skp != NULL) + *skp = sk; + else + sk_SSL_CIPHER_free(sk); + if (scsvs_out != NULL) + *scsvs_out = scsvs; + else + sk_SSL_CIPHER_free(scsvs); + return 1; + err: + sk_SSL_CIPHER_free(sk); + sk_SSL_CIPHER_free(scsvs); + return 0; +} + +int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) +{ + ctx->max_early_data = max_early_data; + + return 1; +} + +uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx) +{ + return ctx->max_early_data; +} + +int SSL_set_max_early_data(SSL *s, uint32_t max_early_data) +{ + s->max_early_data = max_early_data; + + return 1; +} + +uint32_t SSL_get_max_early_data(const SSL *s) +{ + return s->max_early_data; +} + +int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size) +{ + if (s->drbg != NULL) + return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0); + return RAND_bytes(rnd, (int)size); +}