+++ /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 <string.h>
-
-#include <openssl/bio.h>
-#include <openssl/x509_vfy.h>
-#include <openssl/ssl.h>
-
-#include "handshake_helper.h"
-#include "testutil.h"
-
-HANDSHAKE_RESULT *HANDSHAKE_RESULT_new()
-{
- HANDSHAKE_RESULT *ret = OPENSSL_zalloc(sizeof(*ret));
- TEST_check(ret != NULL);
- return ret;
-}
-
-void HANDSHAKE_RESULT_free(HANDSHAKE_RESULT *result)
-{
- if (result == NULL)
- return;
- OPENSSL_free(result->client_npn_negotiated);
- OPENSSL_free(result->server_npn_negotiated);
- OPENSSL_free(result->client_alpn_negotiated);
- OPENSSL_free(result->server_alpn_negotiated);
- OPENSSL_free(result);
-}
-
-/*
- * Since there appears to be no way to extract the sent/received alert
- * from the SSL object directly, we use the info callback and stash
- * the result in ex_data.
- */
-typedef struct handshake_ex_data_st {
- int alert_sent;
- int num_fatal_alerts_sent;
- int alert_received;
- int session_ticket_do_not_call;
- ssl_servername_t servername;
-} HANDSHAKE_EX_DATA;
-
-typedef struct ctx_data_st {
- unsigned char *npn_protocols;
- size_t npn_protocols_len;
- unsigned char *alpn_protocols;
- size_t alpn_protocols_len;
-} CTX_DATA;
-
-/* |ctx_data| itself is stack-allocated. */
-static void ctx_data_free_data(CTX_DATA *ctx_data)
-{
- OPENSSL_free(ctx_data->npn_protocols);
- ctx_data->npn_protocols = NULL;
- OPENSSL_free(ctx_data->alpn_protocols);
- ctx_data->alpn_protocols = NULL;
-}
-
-static int ex_data_idx;
-
-static void info_cb(const SSL *s, int where, int ret)
-{
- if (where & SSL_CB_ALERT) {
- HANDSHAKE_EX_DATA *ex_data =
- (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
- if (where & SSL_CB_WRITE) {
- ex_data->alert_sent = ret;
- if (strcmp(SSL_alert_type_string(ret), "F") == 0
- || strcmp(SSL_alert_desc_string(ret), "CN") == 0)
- ex_data->num_fatal_alerts_sent++;
- } else {
- ex_data->alert_received = ret;
- }
- }
-}
-
-/* Select the appropriate server CTX.
- * Returns SSL_TLSEXT_ERR_OK if a match was found.
- * If |ignore| is 1, returns SSL_TLSEXT_ERR_NOACK on mismatch.
- * Otherwise, returns SSL_TLSEXT_ERR_ALERT_FATAL on mismatch.
- * An empty SNI extension also returns SSL_TSLEXT_ERR_NOACK.
- */
-static int select_server_ctx(SSL *s, void *arg, int ignore)
-{
- const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
- HANDSHAKE_EX_DATA *ex_data =
- (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
-
- if (servername == NULL) {
- ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
- return SSL_TLSEXT_ERR_NOACK;
- }
-
- if (strcmp(servername, "server2") == 0) {
- SSL_CTX *new_ctx = (SSL_CTX*)arg;
- SSL_set_SSL_CTX(s, new_ctx);
- /*
- * Copy over all the SSL_CTX options - reasonable behavior
- * allows testing of cases where the options between two
- * contexts differ/conflict
- */
- SSL_clear_options(s, 0xFFFFFFFFL);
- SSL_set_options(s, SSL_CTX_get_options(new_ctx));
-
- ex_data->servername = SSL_TEST_SERVERNAME_SERVER2;
- return SSL_TLSEXT_ERR_OK;
- } else if (strcmp(servername, "server1") == 0) {
- ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
- return SSL_TLSEXT_ERR_OK;
- } else if (ignore) {
- ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
- return SSL_TLSEXT_ERR_NOACK;
- } else {
- /* Don't set an explicit alert, to test library defaults. */
- return SSL_TLSEXT_ERR_ALERT_FATAL;
- }
-}
-
-static int early_select_server_ctx(SSL *s, void *arg, int ignore)
-{
- const char *servername;
- const unsigned char *p;
- size_t len, remaining;
- HANDSHAKE_EX_DATA *ex_data =
- (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
-
- /*
- * The server_name extension was given too much extensibility when it
- * was written, so parsing the normal case is a bit complex.
- */
- if (!SSL_early_get0_ext(s, TLSEXT_TYPE_server_name, &p, &remaining) ||
- remaining <= 2)
- return 0;
- /* Extract the length of the supplied list of names. */
- len = (*(p++) << 1);
- len += *(p++);
- if (len + 2 != remaining)
- return 0;
- remaining = len;
- /*
- * The list in practice only has a single element, so we only consider
- * the first one.
- */
- if (remaining == 0 || *p++ != TLSEXT_NAMETYPE_host_name)
- return 0;
- remaining--;
- /* Now we can finally pull out the byte array with the actual hostname. */
- if (remaining <= 2)
- return 0;
- len = (*(p++) << 1);
- len += *(p++);
- if (len + 2 > remaining)
- return 0;
- remaining = len;
- servername = (const char *)p;
-
- if (len == strlen("server2") && strncmp(servername, "server2", len) == 0) {
- SSL_CTX *new_ctx = arg;
- SSL_set_SSL_CTX(s, new_ctx);
- /*
- * Copy over all the SSL_CTX options - reasonable behavior
- * allows testing of cases where the options between two
- * contexts differ/conflict
- */
- SSL_clear_options(s, 0xFFFFFFFFL);
- SSL_set_options(s, SSL_CTX_get_options(new_ctx));
-
- ex_data->servername = SSL_TEST_SERVERNAME_SERVER2;
- return 1;
- } else if (len == strlen("server1") &&
- strncmp(servername, "server1", len) == 0) {
- ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
- return 1;
- } else if (ignore) {
- ex_data->servername = SSL_TEST_SERVERNAME_SERVER1;
- return 1;
- }
- return 0;
-}
-/*
- * (RFC 6066):
- * If the server understood the ClientHello extension but
- * does not recognize the server name, the server SHOULD take one of two
- * actions: either abort the handshake by sending a fatal-level
- * unrecognized_name(112) alert or continue the handshake.
- *
- * This behaviour is up to the application to configure; we test both
- * configurations to ensure the state machine propagates the result
- * correctly.
- */
-static int servername_ignore_cb(SSL *s, int *ad, void *arg)
-{
- return select_server_ctx(s, arg, 1);
-}
-
-static int servername_reject_cb(SSL *s, int *ad, void *arg)
-{
- return select_server_ctx(s, arg, 0);
-}
-
-static int early_ignore_cb(SSL *s, int *al, void *arg)
-{
- if (!early_select_server_ctx(s, arg, 1)) {
- *al = SSL_AD_UNRECOGNIZED_NAME;
- return 0;
- }
- return 1;
-}
-
-static int early_reject_cb(SSL *s, int *al, void *arg)
-{
- if (!early_select_server_ctx(s, arg, 0)) {
- *al = SSL_AD_UNRECOGNIZED_NAME;
- return 0;
- }
- return 1;
-}
-
-static int early_nov12_cb(SSL *s, int *al, void *arg)
-{
- int ret;
- unsigned int v;
- const unsigned char *p;
-
- v = SSL_early_get0_legacy_version(s);
- if (v > TLS1_2_VERSION || v < SSL3_VERSION) {
- *al = SSL_AD_PROTOCOL_VERSION;
- return 0;
- }
- (void)SSL_early_get0_session_id(s, &p);
- if (p == NULL ||
- SSL_early_get0_random(s, &p) == 0 ||
- SSL_early_get0_ciphers(s, &p) == 0 ||
- SSL_early_get0_compression_methods(s, &p) == 0) {
- *al = SSL_AD_INTERNAL_ERROR;
- return 0;
- }
- ret = early_select_server_ctx(s, arg, 0);
- SSL_set_max_proto_version(s, TLS1_1_VERSION);
- if (!ret)
- *al = SSL_AD_UNRECOGNIZED_NAME;
- return ret;
-}
-
-static unsigned char dummy_ocsp_resp_good_val = 0xff;
-static unsigned char dummy_ocsp_resp_bad_val = 0xfe;
-
-static int server_ocsp_cb(SSL *s, void *arg)
-{
- unsigned char *resp;
-
- resp = OPENSSL_malloc(1);
- if (resp == NULL)
- return SSL_TLSEXT_ERR_ALERT_FATAL;
- /*
- * For the purposes of testing we just send back a dummy OCSP response
- */
- *resp = *(unsigned char *)arg;
- if (!SSL_set_tlsext_status_ocsp_resp(s, resp, 1))
- return SSL_TLSEXT_ERR_ALERT_FATAL;
-
- return SSL_TLSEXT_ERR_OK;
-}
-
-static int client_ocsp_cb(SSL *s, void *arg)
-{
- const unsigned char *resp;
- int len;
-
- len = SSL_get_tlsext_status_ocsp_resp(s, &resp);
- if (len != 1 || *resp != dummy_ocsp_resp_good_val)
- return 0;
-
- return 1;
-}
-
-static int verify_reject_cb(X509_STORE_CTX *ctx, void *arg) {
- X509_STORE_CTX_set_error(ctx, X509_V_ERR_APPLICATION_VERIFICATION);
- return 0;
-}
-
-static int verify_accept_cb(X509_STORE_CTX *ctx, void *arg) {
- return 1;
-}
-
-static int broken_session_ticket_cb(SSL *s, unsigned char *key_name, unsigned char *iv,
- EVP_CIPHER_CTX *ctx, HMAC_CTX *hctx, int enc)
-{
- return 0;
-}
-
-static int do_not_call_session_ticket_cb(SSL *s, unsigned char *key_name,
- unsigned char *iv,
- EVP_CIPHER_CTX *ctx,
- HMAC_CTX *hctx, int enc)
-{
- HANDSHAKE_EX_DATA *ex_data =
- (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
- ex_data->session_ticket_do_not_call = 1;
- return 0;
-}
-
-/* Parse the comma-separated list into TLS format. */
-static void parse_protos(const char *protos, unsigned char **out, size_t *outlen)
-{
- size_t len, i, prefix;
-
- len = strlen(protos);
-
- /* Should never have reuse. */
- TEST_check(*out == NULL);
-
- /* Test values are small, so we omit length limit checks. */
- *out = OPENSSL_malloc(len + 1);
- TEST_check(*out != NULL);
- *outlen = len + 1;
-
- /*
- * foo => '3', 'f', 'o', 'o'
- * foo,bar => '3', 'f', 'o', 'o', '3', 'b', 'a', 'r'
- */
- memcpy(*out + 1, protos, len);
-
- prefix = 0;
- i = prefix + 1;
- while (i <= len) {
- if ((*out)[i] == ',') {
- TEST_check(i - 1 - prefix > 0);
- (*out)[prefix] = i - 1 - prefix;
- prefix = i;
- }
- i++;
- }
- TEST_check(len - prefix > 0);
- (*out)[prefix] = len - prefix;
-}
-
-#ifndef OPENSSL_NO_NEXTPROTONEG
-/*
- * The client SHOULD select the first protocol advertised by the server that it
- * also supports. In the event that the client doesn't support any of server's
- * protocols, or the server doesn't advertise any, it SHOULD select the first
- * protocol that it supports.
- */
-static int client_npn_cb(SSL *s, unsigned char **out, unsigned char *outlen,
- const unsigned char *in, unsigned int inlen,
- void *arg)
-{
- CTX_DATA *ctx_data = (CTX_DATA*)(arg);
- int ret;
-
- ret = SSL_select_next_proto(out, outlen, in, inlen,
- ctx_data->npn_protocols,
- ctx_data->npn_protocols_len);
- /* Accept both OPENSSL_NPN_NEGOTIATED and OPENSSL_NPN_NO_OVERLAP. */
- TEST_check(ret == OPENSSL_NPN_NEGOTIATED || ret == OPENSSL_NPN_NO_OVERLAP);
- return SSL_TLSEXT_ERR_OK;
-}
-
-static int server_npn_cb(SSL *s, const unsigned char **data,
- unsigned int *len, void *arg)
-{
- CTX_DATA *ctx_data = (CTX_DATA*)(arg);
- *data = ctx_data->npn_protocols;
- *len = ctx_data->npn_protocols_len;
- return SSL_TLSEXT_ERR_OK;
-}
-#endif
-
-/*
- * The server SHOULD select the most highly preferred protocol that it supports
- * and that is also advertised by the client. In the event that the server
- * supports no protocols that the client advertises, then the server SHALL
- * respond with a fatal "no_application_protocol" alert.
- */
-static int server_alpn_cb(SSL *s, const unsigned char **out,
- unsigned char *outlen, const unsigned char *in,
- unsigned int inlen, void *arg)
-{
- CTX_DATA *ctx_data = (CTX_DATA*)(arg);
- int ret;
-
- /* SSL_select_next_proto isn't const-correct... */
- unsigned char *tmp_out;
-
- /*
- * The result points either to |in| or to |ctx_data->alpn_protocols|.
- * The callback is allowed to point to |in| or to a long-lived buffer,
- * so we can return directly without storing a copy.
- */
- ret = SSL_select_next_proto(&tmp_out, outlen,
- ctx_data->alpn_protocols,
- ctx_data->alpn_protocols_len, in, inlen);
-
- *out = tmp_out;
- /* Unlike NPN, we don't tolerate a mismatch. */
- return ret == OPENSSL_NPN_NEGOTIATED ? SSL_TLSEXT_ERR_OK
- : SSL_TLSEXT_ERR_NOACK;
-}
-
-/*
- * Configure callbacks and other properties that can't be set directly
- * in the server/client CONF.
- */
-static void configure_handshake_ctx(SSL_CTX *server_ctx, SSL_CTX *server2_ctx,
- SSL_CTX *client_ctx,
- const SSL_TEST_CTX *test,
- const SSL_TEST_EXTRA_CONF *extra,
- CTX_DATA *server_ctx_data,
- CTX_DATA *server2_ctx_data,
- CTX_DATA *client_ctx_data)
-{
- unsigned char *ticket_keys;
- size_t ticket_key_len;
-
- TEST_check(SSL_CTX_set_max_send_fragment(server_ctx,
- test->max_fragment_size) == 1);
- if (server2_ctx != NULL) {
- TEST_check(SSL_CTX_set_max_send_fragment(server2_ctx,
- test->max_fragment_size) == 1);
- }
- TEST_check(SSL_CTX_set_max_send_fragment(client_ctx,
- test->max_fragment_size) == 1);
-
- switch (extra->client.verify_callback) {
- case SSL_TEST_VERIFY_ACCEPT_ALL:
- SSL_CTX_set_cert_verify_callback(client_ctx, &verify_accept_cb,
- NULL);
- break;
- case SSL_TEST_VERIFY_REJECT_ALL:
- SSL_CTX_set_cert_verify_callback(client_ctx, &verify_reject_cb,
- NULL);
- break;
- case SSL_TEST_VERIFY_NONE:
- break;
- }
-
- /*
- * Link the two contexts for SNI purposes.
- * Also do early callbacks here, as setting both early and SNI is bad.
- */
- switch (extra->server.servername_callback) {
- case SSL_TEST_SERVERNAME_IGNORE_MISMATCH:
- SSL_CTX_set_tlsext_servername_callback(server_ctx, servername_ignore_cb);
- SSL_CTX_set_tlsext_servername_arg(server_ctx, server2_ctx);
- break;
- case SSL_TEST_SERVERNAME_REJECT_MISMATCH:
- SSL_CTX_set_tlsext_servername_callback(server_ctx, servername_reject_cb);
- SSL_CTX_set_tlsext_servername_arg(server_ctx, server2_ctx);
- break;
- case SSL_TEST_SERVERNAME_CB_NONE:
- break;
- case SSL_TEST_SERVERNAME_EARLY_IGNORE_MISMATCH:
- SSL_CTX_set_early_cb(server_ctx, early_ignore_cb, server2_ctx);
- break;
- case SSL_TEST_SERVERNAME_EARLY_REJECT_MISMATCH:
- SSL_CTX_set_early_cb(server_ctx, early_reject_cb, server2_ctx);
- break;
- case SSL_TEST_SERVERNAME_EARLY_NO_V12:
- SSL_CTX_set_early_cb(server_ctx, early_nov12_cb, server2_ctx);
- }
-
- if (extra->server.cert_status != SSL_TEST_CERT_STATUS_NONE) {
- SSL_CTX_set_tlsext_status_type(client_ctx, TLSEXT_STATUSTYPE_ocsp);
- SSL_CTX_set_tlsext_status_cb(client_ctx, client_ocsp_cb);
- SSL_CTX_set_tlsext_status_arg(client_ctx, NULL);
- SSL_CTX_set_tlsext_status_cb(server_ctx, server_ocsp_cb);
- SSL_CTX_set_tlsext_status_arg(server_ctx,
- ((extra->server.cert_status == SSL_TEST_CERT_STATUS_GOOD_RESPONSE)
- ? &dummy_ocsp_resp_good_val : &dummy_ocsp_resp_bad_val));
- }
-
- /*
- * The initial_ctx/session_ctx always handles the encrypt/decrypt of the
- * session ticket. This ticket_key callback is assigned to the second
- * session (assigned via SNI), and should never be invoked
- */
- if (server2_ctx != NULL)
- SSL_CTX_set_tlsext_ticket_key_cb(server2_ctx,
- do_not_call_session_ticket_cb);
-
- if (extra->server.broken_session_ticket) {
- SSL_CTX_set_tlsext_ticket_key_cb(server_ctx, broken_session_ticket_cb);
- }
-#ifndef OPENSSL_NO_NEXTPROTONEG
- if (extra->server.npn_protocols != NULL) {
- parse_protos(extra->server.npn_protocols,
- &server_ctx_data->npn_protocols,
- &server_ctx_data->npn_protocols_len);
- SSL_CTX_set_npn_advertised_cb(server_ctx, server_npn_cb,
- server_ctx_data);
- }
- if (extra->server2.npn_protocols != NULL) {
- parse_protos(extra->server2.npn_protocols,
- &server2_ctx_data->npn_protocols,
- &server2_ctx_data->npn_protocols_len);
- TEST_check(server2_ctx != NULL);
- SSL_CTX_set_npn_advertised_cb(server2_ctx, server_npn_cb,
- server2_ctx_data);
- }
- if (extra->client.npn_protocols != NULL) {
- parse_protos(extra->client.npn_protocols,
- &client_ctx_data->npn_protocols,
- &client_ctx_data->npn_protocols_len);
- SSL_CTX_set_next_proto_select_cb(client_ctx, client_npn_cb,
- client_ctx_data);
- }
-#endif
- if (extra->server.alpn_protocols != NULL) {
- parse_protos(extra->server.alpn_protocols,
- &server_ctx_data->alpn_protocols,
- &server_ctx_data->alpn_protocols_len);
- SSL_CTX_set_alpn_select_cb(server_ctx, server_alpn_cb, server_ctx_data);
- }
- if (extra->server2.alpn_protocols != NULL) {
- TEST_check(server2_ctx != NULL);
- parse_protos(extra->server2.alpn_protocols,
- &server2_ctx_data->alpn_protocols,
- &server2_ctx_data->alpn_protocols_len);
- SSL_CTX_set_alpn_select_cb(server2_ctx, server_alpn_cb, server2_ctx_data);
- }
- if (extra->client.alpn_protocols != NULL) {
- unsigned char *alpn_protos = NULL;
- size_t alpn_protos_len;
- parse_protos(extra->client.alpn_protocols,
- &alpn_protos, &alpn_protos_len);
- /* Reversed return value convention... */
- TEST_check(SSL_CTX_set_alpn_protos(client_ctx, alpn_protos,
- alpn_protos_len) == 0);
- OPENSSL_free(alpn_protos);
- }
-
- /*
- * Use fixed session ticket keys so that we can decrypt a ticket created with
- * one CTX in another CTX. Don't address server2 for the moment.
- */
- ticket_key_len = SSL_CTX_set_tlsext_ticket_keys(server_ctx, NULL, 0);
- ticket_keys = OPENSSL_zalloc(ticket_key_len);
- TEST_check(ticket_keys != NULL);
- TEST_check(SSL_CTX_set_tlsext_ticket_keys(server_ctx, ticket_keys,
- ticket_key_len) == 1);
- OPENSSL_free(ticket_keys);
-
- /* The default log list includes EC keys, so CT can't work without EC. */
-#if !defined(OPENSSL_NO_CT) && !defined(OPENSSL_NO_EC)
- TEST_check(SSL_CTX_set_default_ctlog_list_file(client_ctx));
- switch (extra->client.ct_validation) {
- case SSL_TEST_CT_VALIDATION_PERMISSIVE:
- TEST_check(SSL_CTX_enable_ct(client_ctx, SSL_CT_VALIDATION_PERMISSIVE));
- break;
- case SSL_TEST_CT_VALIDATION_STRICT:
- TEST_check(SSL_CTX_enable_ct(client_ctx, SSL_CT_VALIDATION_STRICT));
- break;
- case SSL_TEST_CT_VALIDATION_NONE:
- break;
- }
-#endif
-}
-
-/* Configure per-SSL callbacks and other properties. */
-static void configure_handshake_ssl(SSL *server, SSL *client,
- const SSL_TEST_EXTRA_CONF *extra)
-{
- if (extra->client.servername != SSL_TEST_SERVERNAME_NONE)
- SSL_set_tlsext_host_name(client,
- ssl_servername_name(extra->client.servername));
-}
-
-/* The status for each connection phase. */
-typedef enum {
- PEER_SUCCESS,
- PEER_RETRY,
- PEER_ERROR
-} peer_status_t;
-
-/* An SSL object and associated read-write buffers. */
-typedef struct peer_st {
- SSL *ssl;
- /* Buffer lengths are int to match the SSL read/write API. */
- unsigned char *write_buf;
- int write_buf_len;
- unsigned char *read_buf;
- int read_buf_len;
- int bytes_to_write;
- int bytes_to_read;
- peer_status_t status;
-} PEER;
-
-static void create_peer(PEER *peer, SSL_CTX *ctx)
-{
- static const int peer_buffer_size = 64 * 1024;
-
- peer->ssl = SSL_new(ctx);
- TEST_check(peer->ssl != NULL);
- peer->write_buf = OPENSSL_zalloc(peer_buffer_size);
- TEST_check(peer->write_buf != NULL);
- peer->read_buf = OPENSSL_zalloc(peer_buffer_size);
- TEST_check(peer->read_buf != NULL);
- peer->write_buf_len = peer->read_buf_len = peer_buffer_size;
-}
-
-static void peer_free_data(PEER *peer)
-{
- SSL_free(peer->ssl);
- OPENSSL_free(peer->write_buf);
- OPENSSL_free(peer->read_buf);
-}
-
-/*
- * Note that we could do the handshake transparently under an SSL_write,
- * but separating the steps is more helpful for debugging test failures.
- */
-static void do_handshake_step(PEER *peer)
-{
- int ret;
-
- TEST_check(peer->status == PEER_RETRY);
- ret = SSL_do_handshake(peer->ssl);
-
- if (ret == 1) {
- peer->status = PEER_SUCCESS;
- } else if (ret == 0) {
- peer->status = PEER_ERROR;
- } else {
- int error = SSL_get_error(peer->ssl, ret);
- /* Memory bios should never block with SSL_ERROR_WANT_WRITE. */
- if (error != SSL_ERROR_WANT_READ)
- peer->status = PEER_ERROR;
- }
-}
-
-/*-
- * Send/receive some application data. The read-write sequence is
- * Peer A: (R) W - first read will yield no data
- * Peer B: R W
- * ...
- * Peer A: R W
- * Peer B: R W
- * Peer A: R
- */
-static void do_app_data_step(PEER *peer)
-{
- int ret = 1, write_bytes;
-
- TEST_check(peer->status == PEER_RETRY);
-
- /* We read everything available... */
- while (ret > 0 && peer->bytes_to_read) {
- ret = SSL_read(peer->ssl, peer->read_buf, peer->read_buf_len);
- if (ret > 0) {
- TEST_check(ret <= peer->bytes_to_read);
- peer->bytes_to_read -= ret;
- } else if (ret == 0) {
- peer->status = PEER_ERROR;
- return;
- } else {
- int error = SSL_get_error(peer->ssl, ret);
- if (error != SSL_ERROR_WANT_READ) {
- peer->status = PEER_ERROR;
- return;
- } /* Else continue with write. */
- }
- }
-
- /* ... but we only write one write-buffer-full of data. */
- write_bytes = peer->bytes_to_write < peer->write_buf_len ? peer->bytes_to_write :
- peer->write_buf_len;
- if (write_bytes) {
- ret = SSL_write(peer->ssl, peer->write_buf, write_bytes);
- if (ret > 0) {
- /* SSL_write will only succeed with a complete write. */
- TEST_check(ret == write_bytes);
- peer->bytes_to_write -= ret;
- } else {
- /*
- * We should perhaps check for SSL_ERROR_WANT_READ/WRITE here
- * but this doesn't yet occur with current app data sizes.
- */
- peer->status = PEER_ERROR;
- return;
- }
- }
-
- /*
- * We could simply finish when there was nothing to read, and we have
- * nothing left to write. But keeping track of the expected number of bytes
- * to read gives us somewhat better guarantees that all data sent is in fact
- * received.
- */
- if (!peer->bytes_to_write && !peer->bytes_to_read) {
- peer->status = PEER_SUCCESS;
- }
-}
-
-static void do_reneg_setup_step(const SSL_TEST_CTX *test_ctx, PEER *peer)
-{
- int ret;
- char buf;
-
- TEST_check(peer->status == PEER_RETRY);
- TEST_check(test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RENEG_SERVER
- || test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RENEG_CLIENT
- || test_ctx->handshake_mode
- == SSL_TEST_HANDSHAKE_KEY_UPDATE_SERVER
- || test_ctx->handshake_mode
- == SSL_TEST_HANDSHAKE_KEY_UPDATE_CLIENT);
-
- /* Reset the count of the amount of app data we need to read/write */
- peer->bytes_to_write = peer->bytes_to_read = test_ctx->app_data_size;
-
- /* Check if we are the peer that is going to initiate */
- if ((test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RENEG_SERVER
- && SSL_is_server(peer->ssl))
- || (test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RENEG_CLIENT
- && !SSL_is_server(peer->ssl))) {
- /*
- * If we already asked for a renegotiation then fall through to the
- * SSL_read() below.
- */
- if (!SSL_renegotiate_pending(peer->ssl)) {
- /*
- * If we are the client we will always attempt to resume the
- * session. The server may or may not resume dependant on the
- * setting of SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
- */
- if (SSL_is_server(peer->ssl)) {
- ret = SSL_renegotiate(peer->ssl);
- } else {
- if (test_ctx->extra.client.reneg_ciphers != NULL) {
- if (!SSL_set_cipher_list(peer->ssl,
- test_ctx->extra.client.reneg_ciphers)) {
- peer->status = PEER_ERROR;
- return;
- }
- ret = SSL_renegotiate(peer->ssl);
- } else {
- ret = SSL_renegotiate_abbreviated(peer->ssl);
- }
- }
- if (!ret) {
- peer->status = PEER_ERROR;
- return;
- }
- do_handshake_step(peer);
- /*
- * If status is PEER_RETRY it means we're waiting on the peer to
- * continue the handshake. As far as setting up the renegotiation is
- * concerned that is a success. The next step will continue the
- * handshake to its conclusion.
- *
- * If status is PEER_SUCCESS then we are the server and we have
- * successfully sent the HelloRequest. We need to continue to wait
- * until the handshake arrives from the client.
- */
- if (peer->status == PEER_RETRY)
- peer->status = PEER_SUCCESS;
- else if (peer->status == PEER_SUCCESS)
- peer->status = PEER_RETRY;
- return;
- }
- } else if (test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_KEY_UPDATE_SERVER
- || test_ctx->handshake_mode
- == SSL_TEST_HANDSHAKE_KEY_UPDATE_CLIENT) {
- if (SSL_is_server(peer->ssl)
- != (test_ctx->handshake_mode
- == SSL_TEST_HANDSHAKE_KEY_UPDATE_SERVER)) {
- peer->status = PEER_SUCCESS;
- return;
- }
-
- ret = SSL_key_update(peer->ssl, test_ctx->key_update_type);
- if (!ret) {
- peer->status = PEER_ERROR;
- return;
- }
- do_handshake_step(peer);
- /*
- * This is a one step handshake. We shouldn't get anything other than
- * PEER_SUCCESS
- */
- if (peer->status != PEER_SUCCESS)
- peer->status = PEER_ERROR;
- return;
- }
-
- /*
- * The SSL object is still expecting app data, even though it's going to
- * get a handshake message. We try to read, and it should fail - after which
- * we should be in a handshake
- */
- ret = SSL_read(peer->ssl, &buf, sizeof(buf));
- if (ret >= 0) {
- /*
- * We're not actually expecting data - we're expecting a reneg to
- * start
- */
- peer->status = PEER_ERROR;
- return;
- } else {
- int error = SSL_get_error(peer->ssl, ret);
- if (error != SSL_ERROR_WANT_READ) {
- peer->status = PEER_ERROR;
- return;
- }
- /* If we're not in init yet then we're not done with setup yet */
- if (!SSL_in_init(peer->ssl))
- return;
- }
-
- peer->status = PEER_SUCCESS;
-}
-
-
-/*
- * RFC 5246 says:
- *
- * Note that as of TLS 1.1,
- * failure to properly close a connection no longer requires that a
- * session not be resumed. This is a change from TLS 1.0 to conform
- * with widespread implementation practice.
- *
- * However,
- * (a) OpenSSL requires that a connection be shutdown for all protocol versions.
- * (b) We test lower versions, too.
- * So we just implement shutdown. We do a full bidirectional shutdown so that we
- * can compare sent and received close_notify alerts and get some test coverage
- * for SSL_shutdown as a bonus.
- */
-static void do_shutdown_step(PEER *peer)
-{
- int ret;
-
- TEST_check(peer->status == PEER_RETRY);
- ret = SSL_shutdown(peer->ssl);
-
- if (ret == 1) {
- peer->status = PEER_SUCCESS;
- } else if (ret < 0) { /* On 0, we retry. */
- int error = SSL_get_error(peer->ssl, ret);
- /* Memory bios should never block with SSL_ERROR_WANT_WRITE. */
- if (error != SSL_ERROR_WANT_READ)
- peer->status = PEER_ERROR;
- }
-}
-
-typedef enum {
- HANDSHAKE,
- RENEG_APPLICATION_DATA,
- RENEG_SETUP,
- RENEG_HANDSHAKE,
- APPLICATION_DATA,
- SHUTDOWN,
- CONNECTION_DONE
-} connect_phase_t;
-
-static connect_phase_t next_phase(const SSL_TEST_CTX *test_ctx,
- connect_phase_t phase)
-{
- switch (phase) {
- case HANDSHAKE:
- if (test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RENEG_SERVER
- || test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RENEG_CLIENT
- || test_ctx->handshake_mode
- == SSL_TEST_HANDSHAKE_KEY_UPDATE_CLIENT
- || test_ctx->handshake_mode
- == SSL_TEST_HANDSHAKE_KEY_UPDATE_SERVER)
- return RENEG_APPLICATION_DATA;
- return APPLICATION_DATA;
- case RENEG_APPLICATION_DATA:
- return RENEG_SETUP;
- case RENEG_SETUP:
- if (test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_KEY_UPDATE_SERVER
- || test_ctx->handshake_mode
- == SSL_TEST_HANDSHAKE_KEY_UPDATE_CLIENT)
- return APPLICATION_DATA;
- return RENEG_HANDSHAKE;
- case RENEG_HANDSHAKE:
- return APPLICATION_DATA;
- case APPLICATION_DATA:
- return SHUTDOWN;
- case SHUTDOWN:
- return CONNECTION_DONE;
- case CONNECTION_DONE:
- TEST_check(0);
- break;
- }
- return -1;
-}
-
-static void do_connect_step(const SSL_TEST_CTX *test_ctx, PEER *peer,
- connect_phase_t phase)
-{
- switch (phase) {
- case HANDSHAKE:
- do_handshake_step(peer);
- break;
- case RENEG_APPLICATION_DATA:
- do_app_data_step(peer);
- break;
- case RENEG_SETUP:
- do_reneg_setup_step(test_ctx, peer);
- break;
- case RENEG_HANDSHAKE:
- do_handshake_step(peer);
- break;
- case APPLICATION_DATA:
- do_app_data_step(peer);
- break;
- case SHUTDOWN:
- do_shutdown_step(peer);
- break;
- case CONNECTION_DONE:
- TEST_check(0);
- break;
- }
-}
-
-typedef enum {
- /* Both parties succeeded. */
- HANDSHAKE_SUCCESS,
- /* Client errored. */
- CLIENT_ERROR,
- /* Server errored. */
- SERVER_ERROR,
- /* Peers are in inconsistent state. */
- INTERNAL_ERROR,
- /* One or both peers not done. */
- HANDSHAKE_RETRY
-} handshake_status_t;
-
-/*
- * Determine the handshake outcome.
- * last_status: the status of the peer to have acted last.
- * previous_status: the status of the peer that didn't act last.
- * client_spoke_last: 1 if the client went last.
- */
-static handshake_status_t handshake_status(peer_status_t last_status,
- peer_status_t previous_status,
- int client_spoke_last)
-{
- switch (last_status) {
- case PEER_SUCCESS:
- switch (previous_status) {
- case PEER_SUCCESS:
- /* Both succeeded. */
- return HANDSHAKE_SUCCESS;
- case PEER_RETRY:
- /* Let the first peer finish. */
- return HANDSHAKE_RETRY;
- case PEER_ERROR:
- /*
- * Second peer succeeded despite the fact that the first peer
- * already errored. This shouldn't happen.
- */
- return INTERNAL_ERROR;
- }
-
- case PEER_RETRY:
- if (previous_status == PEER_RETRY) {
- /* Neither peer is done. */
- return HANDSHAKE_RETRY;
- } else {
- /*
- * Deadlock: second peer is waiting for more input while first
- * peer thinks they're done (no more input is coming).
- */
- return INTERNAL_ERROR;
- }
- case PEER_ERROR:
- switch (previous_status) {
- case PEER_SUCCESS:
- /*
- * First peer succeeded but second peer errored.
- * TODO(emilia): we should be able to continue here (with some
- * application data?) to ensure the first peer receives the
- * alert / close_notify.
- * (No tests currently exercise this branch.)
- */
- return client_spoke_last ? CLIENT_ERROR : SERVER_ERROR;
- case PEER_RETRY:
- /* We errored; let the peer finish. */
- return HANDSHAKE_RETRY;
- case PEER_ERROR:
- /* Both peers errored. Return the one that errored first. */
- return client_spoke_last ? SERVER_ERROR : CLIENT_ERROR;
- }
- }
- /* Control should never reach here. */
- return INTERNAL_ERROR;
-}
-
-/* Convert unsigned char buf's that shouldn't contain any NUL-bytes to char. */
-static char *dup_str(const unsigned char *in, size_t len)
-{
- char *ret;
-
- if (len == 0)
- return NULL;
-
- /* Assert that the string does not contain NUL-bytes. */
- TEST_check(OPENSSL_strnlen((const char*)(in), len) == len);
- ret = OPENSSL_strndup((const char*)(in), len);
- TEST_check(ret != NULL);
- return ret;
-}
-
-static int pkey_type(EVP_PKEY *pkey)
-{
- int nid = EVP_PKEY_id(pkey);
-
-#ifndef OPENSSL_NO_EC
- if (nid == EVP_PKEY_EC) {
- const EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey);
- return EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
- }
-#endif
- return nid;
-}
-
-static int peer_pkey_type(SSL *s)
-{
- X509 *x = SSL_get_peer_certificate(s);
-
- if (x != NULL) {
- int nid = pkey_type(X509_get0_pubkey(x));
-
- X509_free(x);
- return nid;
- }
- return NID_undef;
-}
-
-/*
- * Note that |extra| points to the correct client/server configuration
- * within |test_ctx|. When configuring the handshake, general mode settings
- * are taken from |test_ctx|, and client/server-specific settings should be
- * taken from |extra|.
- *
- * The configuration code should never reach into |test_ctx->extra| or
- * |test_ctx->resume_extra| directly.
- *
- * (We could refactor test mode settings into a substructure. This would result
- * in cleaner argument passing but would complicate the test configuration
- * parsing.)
- */
-static HANDSHAKE_RESULT *do_handshake_internal(
- SSL_CTX *server_ctx, SSL_CTX *server2_ctx, SSL_CTX *client_ctx,
- const SSL_TEST_CTX *test_ctx, const SSL_TEST_EXTRA_CONF *extra,
- SSL_SESSION *session_in, SSL_SESSION **session_out)
-{
- PEER server, client;
- BIO *client_to_server, *server_to_client;
- HANDSHAKE_EX_DATA server_ex_data, client_ex_data;
- CTX_DATA client_ctx_data, server_ctx_data, server2_ctx_data;
- HANDSHAKE_RESULT *ret = HANDSHAKE_RESULT_new();
- int client_turn = 1, client_turn_count = 0;
- connect_phase_t phase = HANDSHAKE;
- handshake_status_t status = HANDSHAKE_RETRY;
- const unsigned char* tick = NULL;
- size_t tick_len = 0;
- SSL_SESSION* sess = NULL;
- const unsigned char *proto = NULL;
- /* API dictates unsigned int rather than size_t. */
- unsigned int proto_len = 0;
- EVP_PKEY *tmp_key;
-
- memset(&server_ctx_data, 0, sizeof(server_ctx_data));
- memset(&server2_ctx_data, 0, sizeof(server2_ctx_data));
- memset(&client_ctx_data, 0, sizeof(client_ctx_data));
- memset(&server, 0, sizeof(server));
- memset(&client, 0, sizeof(client));
-
- configure_handshake_ctx(server_ctx, server2_ctx, client_ctx, test_ctx, extra,
- &server_ctx_data, &server2_ctx_data, &client_ctx_data);
-
- /* Setup SSL and buffers; additional configuration happens below. */
- create_peer(&server, server_ctx);
- create_peer(&client, client_ctx);
-
- server.bytes_to_write = client.bytes_to_read = test_ctx->app_data_size;
- client.bytes_to_write = server.bytes_to_read = test_ctx->app_data_size;
-
- configure_handshake_ssl(server.ssl, client.ssl, extra);
- if (session_in != NULL) {
- /* In case we're testing resumption without tickets. */
- TEST_check(SSL_CTX_add_session(server_ctx, session_in));
- TEST_check(SSL_set_session(client.ssl, session_in));
- }
-
- memset(&server_ex_data, 0, sizeof(server_ex_data));
- memset(&client_ex_data, 0, sizeof(client_ex_data));
-
- ret->result = SSL_TEST_INTERNAL_ERROR;
-
- client_to_server = BIO_new(BIO_s_mem());
- server_to_client = BIO_new(BIO_s_mem());
-
- TEST_check(client_to_server != NULL);
- TEST_check(server_to_client != NULL);
-
- /* Non-blocking bio. */
- BIO_set_nbio(client_to_server, 1);
- BIO_set_nbio(server_to_client, 1);
-
- SSL_set_connect_state(client.ssl);
- SSL_set_accept_state(server.ssl);
-
- /* The bios are now owned by the SSL object. */
- SSL_set_bio(client.ssl, server_to_client, client_to_server);
- TEST_check(BIO_up_ref(server_to_client) > 0);
- TEST_check(BIO_up_ref(client_to_server) > 0);
- SSL_set_bio(server.ssl, client_to_server, server_to_client);
-
- ex_data_idx = SSL_get_ex_new_index(0, "ex data", NULL, NULL, NULL);
- TEST_check(ex_data_idx >= 0);
-
- TEST_check(SSL_set_ex_data(server.ssl, ex_data_idx, &server_ex_data) == 1);
- TEST_check(SSL_set_ex_data(client.ssl, ex_data_idx, &client_ex_data) == 1);
-
- SSL_set_info_callback(server.ssl, &info_cb);
- SSL_set_info_callback(client.ssl, &info_cb);
-
- client.status = server.status = PEER_RETRY;
-
- /*
- * Half-duplex handshake loop.
- * Client and server speak to each other synchronously in the same process.
- * We use non-blocking BIOs, so whenever one peer blocks for read, it
- * returns PEER_RETRY to indicate that it's the other peer's turn to write.
- * The handshake succeeds once both peers have succeeded. If one peer
- * errors out, we also let the other peer retry (and presumably fail).
- */
- for(;;) {
- if (client_turn) {
- do_connect_step(test_ctx, &client, phase);
- status = handshake_status(client.status, server.status,
- 1 /* client went last */);
- } else {
- do_connect_step(test_ctx, &server, phase);
- status = handshake_status(server.status, client.status,
- 0 /* server went last */);
- }
-
- switch (status) {
- case HANDSHAKE_SUCCESS:
- client_turn_count = 0;
- phase = next_phase(test_ctx, phase);
- if (phase == CONNECTION_DONE) {
- ret->result = SSL_TEST_SUCCESS;
- goto err;
- } else {
- client.status = server.status = PEER_RETRY;
- /*
- * For now, client starts each phase. Since each phase is
- * started separately, we can later control this more
- * precisely, for example, to test client-initiated and
- * server-initiated shutdown.
- */
- client_turn = 1;
- break;
- }
- case CLIENT_ERROR:
- ret->result = SSL_TEST_CLIENT_FAIL;
- goto err;
- case SERVER_ERROR:
- ret->result = SSL_TEST_SERVER_FAIL;
- goto err;
- case INTERNAL_ERROR:
- ret->result = SSL_TEST_INTERNAL_ERROR;
- goto err;
- case HANDSHAKE_RETRY:
- if (client_turn_count++ >= 2000) {
- /*
- * At this point, there's been so many PEER_RETRY in a row
- * that it's likely both sides are stuck waiting for a read.
- * It's time to give up.
- */
- ret->result = SSL_TEST_INTERNAL_ERROR;
- goto err;
- }
-
- /* Continue. */
- client_turn ^= 1;
- break;
- }
- }
- err:
- ret->server_alert_sent = server_ex_data.alert_sent;
- ret->server_num_fatal_alerts_sent = server_ex_data.num_fatal_alerts_sent;
- ret->server_alert_received = client_ex_data.alert_received;
- ret->client_alert_sent = client_ex_data.alert_sent;
- ret->client_num_fatal_alerts_sent = client_ex_data.num_fatal_alerts_sent;
- ret->client_alert_received = server_ex_data.alert_received;
- ret->server_protocol = SSL_version(server.ssl);
- ret->client_protocol = SSL_version(client.ssl);
- ret->servername = server_ex_data.servername;
- if ((sess = SSL_get0_session(client.ssl)) != NULL)
- SSL_SESSION_get0_ticket(sess, &tick, &tick_len);
- if (tick == NULL || tick_len == 0)
- ret->session_ticket = SSL_TEST_SESSION_TICKET_NO;
- else
- ret->session_ticket = SSL_TEST_SESSION_TICKET_YES;
- ret->compression = (SSL_get_current_compression(client.ssl) == NULL)
- ? SSL_TEST_COMPRESSION_NO
- : SSL_TEST_COMPRESSION_YES;
- ret->session_ticket_do_not_call = server_ex_data.session_ticket_do_not_call;
-
-#ifndef OPENSSL_NO_NEXTPROTONEG
- SSL_get0_next_proto_negotiated(client.ssl, &proto, &proto_len);
- ret->client_npn_negotiated = dup_str(proto, proto_len);
-
- SSL_get0_next_proto_negotiated(server.ssl, &proto, &proto_len);
- ret->server_npn_negotiated = dup_str(proto, proto_len);
-#endif
-
- SSL_get0_alpn_selected(client.ssl, &proto, &proto_len);
- ret->client_alpn_negotiated = dup_str(proto, proto_len);
-
- SSL_get0_alpn_selected(server.ssl, &proto, &proto_len);
- ret->server_alpn_negotiated = dup_str(proto, proto_len);
-
- ret->client_resumed = SSL_session_reused(client.ssl);
- ret->server_resumed = SSL_session_reused(server.ssl);
-
- if (session_out != NULL)
- *session_out = SSL_get1_session(client.ssl);
-
- if (SSL_get_server_tmp_key(client.ssl, &tmp_key)) {
- ret->tmp_key_type = pkey_type(tmp_key);
- EVP_PKEY_free(tmp_key);
- }
-
- SSL_get_peer_signature_nid(client.ssl, &ret->server_sign_hash);
- SSL_get_peer_signature_nid(server.ssl, &ret->client_sign_hash);
-
- SSL_get_peer_signature_type_nid(client.ssl, &ret->server_sign_type);
- SSL_get_peer_signature_type_nid(server.ssl, &ret->client_sign_type);
-
- ret->server_cert_type = peer_pkey_type(client.ssl);
- ret->client_cert_type = peer_pkey_type(server.ssl);
-
- ctx_data_free_data(&server_ctx_data);
- ctx_data_free_data(&server2_ctx_data);
- ctx_data_free_data(&client_ctx_data);
-
- peer_free_data(&server);
- peer_free_data(&client);
- return ret;
-}
-
-HANDSHAKE_RESULT *do_handshake(SSL_CTX *server_ctx, SSL_CTX *server2_ctx,
- SSL_CTX *client_ctx, SSL_CTX *resume_server_ctx,
- SSL_CTX *resume_client_ctx,
- const SSL_TEST_CTX *test_ctx)
-{
- HANDSHAKE_RESULT *result;
- SSL_SESSION *session = NULL;
-
- result = do_handshake_internal(server_ctx, server2_ctx, client_ctx,
- test_ctx, &test_ctx->extra,
- NULL, &session);
- if (test_ctx->handshake_mode != SSL_TEST_HANDSHAKE_RESUME)
- goto end;
-
- if (result->result != SSL_TEST_SUCCESS) {
- result->result = SSL_TEST_FIRST_HANDSHAKE_FAILED;
- goto end;
- }
-
- HANDSHAKE_RESULT_free(result);
- /* We don't support SNI on second handshake yet, so server2_ctx is NULL. */
- result = do_handshake_internal(resume_server_ctx, NULL, resume_client_ctx,
- test_ctx, &test_ctx->resume_extra,
- session, NULL);
- end:
- SSL_SESSION_free(session);
- return result;
-}
projects / openssl.git / blobdiff