513 lines
15 KiB
C
513 lines
15 KiB
C
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/*
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* Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/ssl.h>
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#include <string.h>
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#include "helpers/ssltestlib.h"
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#include "testutil.h"
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#include "internal/packet.h"
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static char *cert = NULL;
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static char *privkey = NULL;
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static BIO *s_to_c_fbio = NULL, *c_to_s_fbio = NULL;
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static int chseen = 0, shseen = 0, sccsseen = 0, ccsaftersh = 0;
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static int ccsbeforesh = 0, sappdataseen = 0, cappdataseen = 0, badccs = 0;
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static int badvers = 0, badsessid = 0;
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static unsigned char chsessid[SSL_MAX_SSL_SESSION_ID_LENGTH];
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static size_t chsessidlen = 0;
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static int watchccs_new(BIO *bi);
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static int watchccs_free(BIO *a);
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static int watchccs_read(BIO *b, char *out, int outl);
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static int watchccs_write(BIO *b, const char *in, int inl);
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static long watchccs_ctrl(BIO *b, int cmd, long num, void *ptr);
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static int watchccs_gets(BIO *bp, char *buf, int size);
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static int watchccs_puts(BIO *bp, const char *str);
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/* Choose a sufficiently large type likely to be unused for this custom BIO */
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# define BIO_TYPE_WATCHCCS_FILTER (0x80 | BIO_TYPE_FILTER)
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static BIO_METHOD *method_watchccs = NULL;
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static const BIO_METHOD *bio_f_watchccs_filter(void)
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{
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if (method_watchccs == NULL) {
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method_watchccs = BIO_meth_new(BIO_TYPE_WATCHCCS_FILTER,
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"Watch CCS filter");
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if (method_watchccs == NULL
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|| !BIO_meth_set_write(method_watchccs, watchccs_write)
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|| !BIO_meth_set_read(method_watchccs, watchccs_read)
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|| !BIO_meth_set_puts(method_watchccs, watchccs_puts)
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|| !BIO_meth_set_gets(method_watchccs, watchccs_gets)
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|| !BIO_meth_set_ctrl(method_watchccs, watchccs_ctrl)
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|| !BIO_meth_set_create(method_watchccs, watchccs_new)
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|| !BIO_meth_set_destroy(method_watchccs, watchccs_free))
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return NULL;
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}
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return method_watchccs;
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}
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static int watchccs_new(BIO *bio)
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{
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BIO_set_init(bio, 1);
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return 1;
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}
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static int watchccs_free(BIO *bio)
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{
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BIO_set_init(bio, 0);
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return 1;
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}
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static int watchccs_read(BIO *bio, char *out, int outl)
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{
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int ret = 0;
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BIO *next = BIO_next(bio);
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if (outl <= 0)
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return 0;
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if (next == NULL)
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return 0;
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BIO_clear_retry_flags(bio);
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ret = BIO_read(next, out, outl);
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if (ret <= 0 && BIO_should_read(next))
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BIO_set_retry_read(bio);
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return ret;
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}
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static int watchccs_write(BIO *bio, const char *in, int inl)
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{
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int ret = 0;
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BIO *next = BIO_next(bio);
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PACKET pkt, msg, msgbody, sessionid;
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unsigned int rectype, recvers, msgtype, expectedrecvers;
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if (inl <= 0)
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return 0;
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if (next == NULL)
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return 0;
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BIO_clear_retry_flags(bio);
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if (!PACKET_buf_init(&pkt, (const unsigned char *)in, inl))
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return 0;
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/* We assume that we always write complete records each time */
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while (PACKET_remaining(&pkt)) {
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if (!PACKET_get_1(&pkt, &rectype)
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|| !PACKET_get_net_2(&pkt, &recvers)
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|| !PACKET_get_length_prefixed_2(&pkt, &msg))
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return 0;
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expectedrecvers = TLS1_2_VERSION;
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if (rectype == SSL3_RT_HANDSHAKE) {
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if (!PACKET_get_1(&msg, &msgtype)
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|| !PACKET_get_length_prefixed_3(&msg, &msgbody))
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return 0;
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if (msgtype == SSL3_MT_CLIENT_HELLO) {
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chseen++;
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/*
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* Skip legacy_version (2 bytes) and Random (32 bytes) to read
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* session_id.
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*/
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if (!PACKET_forward(&msgbody, 34)
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|| !PACKET_get_length_prefixed_1(&msgbody, &sessionid))
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return 0;
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if (chseen == 1) {
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expectedrecvers = TLS1_VERSION;
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/* Save the session id for later */
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chsessidlen = PACKET_remaining(&sessionid);
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if (!PACKET_copy_bytes(&sessionid, chsessid, chsessidlen))
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return 0;
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} else {
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/*
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* Check the session id for the second ClientHello is the
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* same as the first one.
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*/
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if (PACKET_remaining(&sessionid) != chsessidlen
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|| (chsessidlen > 0
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&& memcmp(chsessid, PACKET_data(&sessionid),
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chsessidlen) != 0))
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badsessid = 1;
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}
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} else if (msgtype == SSL3_MT_SERVER_HELLO) {
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shseen++;
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/*
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* Skip legacy_version (2 bytes) and Random (32 bytes) to read
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* session_id.
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*/
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if (!PACKET_forward(&msgbody, 34)
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|| !PACKET_get_length_prefixed_1(&msgbody, &sessionid))
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return 0;
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/*
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* Check the session id is the same as the one in the
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* ClientHello
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*/
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if (PACKET_remaining(&sessionid) != chsessidlen
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|| (chsessidlen > 0
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&& memcmp(chsessid, PACKET_data(&sessionid),
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chsessidlen) != 0))
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badsessid = 1;
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}
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} else if (rectype == SSL3_RT_CHANGE_CIPHER_SPEC) {
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if (bio == s_to_c_fbio) {
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/*
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* Server writing. We shouldn't have written any app data
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* yet, and we should have seen both the ClientHello and the
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* ServerHello
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*/
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if (!sappdataseen
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&& chseen == 1
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&& shseen == 1
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&& !sccsseen)
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sccsseen = 1;
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else
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badccs = 1;
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} else if (!cappdataseen) {
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/*
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* Client writing. We shouldn't have written any app data
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* yet, and we should have seen the ClientHello
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*/
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if (shseen == 1 && !ccsaftersh)
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ccsaftersh = 1;
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else if (shseen == 0 && !ccsbeforesh)
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ccsbeforesh = 1;
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else
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badccs = 1;
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} else {
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badccs = 1;
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}
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} else if (rectype == SSL3_RT_APPLICATION_DATA) {
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if (bio == s_to_c_fbio)
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sappdataseen = 1;
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else
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cappdataseen = 1;
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}
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if (recvers != expectedrecvers)
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badvers = 1;
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}
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ret = BIO_write(next, in, inl);
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if (ret <= 0 && BIO_should_write(next))
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BIO_set_retry_write(bio);
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return ret;
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}
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static long watchccs_ctrl(BIO *bio, int cmd, long num, void *ptr)
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{
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long ret;
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BIO *next = BIO_next(bio);
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if (next == NULL)
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return 0;
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switch (cmd) {
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case BIO_CTRL_DUP:
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ret = 0;
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break;
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default:
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ret = BIO_ctrl(next, cmd, num, ptr);
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break;
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}
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return ret;
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}
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static int watchccs_gets(BIO *bio, char *buf, int size)
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{
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/* We don't support this - not needed anyway */
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return -1;
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}
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static int watchccs_puts(BIO *bio, const char *str)
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{
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return watchccs_write(bio, str, strlen(str));
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}
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static int test_tls13ccs(int tst)
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{
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SSL_CTX *sctx = NULL, *cctx = NULL;
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SSL *sssl = NULL, *cssl = NULL;
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int ret = 0;
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const char msg[] = "Dummy data";
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char buf[80];
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size_t written, readbytes;
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SSL_SESSION *sess = NULL;
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chseen = shseen = sccsseen = ccsaftersh = ccsbeforesh = 0;
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sappdataseen = cappdataseen = badccs = badvers = badsessid = 0;
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chsessidlen = 0;
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if (!TEST_true(create_ssl_ctx_pair(NULL, TLS_server_method(),
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TLS_client_method(), TLS1_VERSION, 0,
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&sctx, &cctx, cert, privkey))
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|| !TEST_true(SSL_CTX_set_max_early_data(sctx,
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SSL3_RT_MAX_PLAIN_LENGTH)))
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goto err;
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/*
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* Test 0: Simple Handshake
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* Test 1: Simple Handshake, client middlebox compat mode disabled
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* Test 2: Simple Handshake, server middlebox compat mode disabled
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* Test 3: HRR Handshake
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* Test 4: HRR Handshake, client middlebox compat mode disabled
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* Test 5: HRR Handshake, server middlebox compat mode disabled
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* Test 6: Early data handshake
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* Test 7: Early data handshake, client middlebox compat mode disabled
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* Test 8: Early data handshake, server middlebox compat mode disabled
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* Test 9: Early data then HRR
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* Test 10: Early data then HRR, client middlebox compat mode disabled
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* Test 11: Early data then HRR, server middlebox compat mode disabled
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*/
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switch (tst) {
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case 0:
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case 3:
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case 6:
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case 9:
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break;
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case 1:
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case 4:
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case 7:
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case 10:
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SSL_CTX_clear_options(cctx, SSL_OP_ENABLE_MIDDLEBOX_COMPAT);
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break;
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case 2:
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case 5:
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case 8:
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case 11:
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SSL_CTX_clear_options(sctx, SSL_OP_ENABLE_MIDDLEBOX_COMPAT);
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break;
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default:
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TEST_error("Invalid test value");
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goto err;
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}
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if (tst >= 6) {
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/* Get a session suitable for early_data */
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if (!TEST_true(create_ssl_objects(sctx, cctx, &sssl, &cssl, NULL, NULL))
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|| !TEST_true(create_ssl_connection(sssl, cssl, SSL_ERROR_NONE)))
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goto err;
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sess = SSL_get1_session(cssl);
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if (!TEST_ptr(sess))
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goto err;
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SSL_shutdown(cssl);
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SSL_shutdown(sssl);
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SSL_free(sssl);
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SSL_free(cssl);
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sssl = cssl = NULL;
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}
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if ((tst >= 3 && tst <= 5) || tst >= 9) {
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/* HRR handshake */
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#if defined(OPENSSL_NO_EC)
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# if !defined(OPENSSL_NO_DH)
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if (!TEST_true(SSL_CTX_set1_groups_list(sctx, "ffdhe3072")))
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goto err;
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# endif
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#else
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if (!TEST_true(SSL_CTX_set1_groups_list(sctx, "P-384")))
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goto err;
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#endif
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}
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s_to_c_fbio = BIO_new(bio_f_watchccs_filter());
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c_to_s_fbio = BIO_new(bio_f_watchccs_filter());
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if (!TEST_ptr(s_to_c_fbio)
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|| !TEST_ptr(c_to_s_fbio)) {
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BIO_free(s_to_c_fbio);
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BIO_free(c_to_s_fbio);
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goto err;
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}
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/* BIOs get freed on error */
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if (!TEST_true(create_ssl_objects(sctx, cctx, &sssl, &cssl, s_to_c_fbio,
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c_to_s_fbio)))
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goto err;
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if (tst >= 6) {
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/* Early data */
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if (!TEST_true(SSL_set_session(cssl, sess))
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|| !TEST_true(SSL_write_early_data(cssl, msg, strlen(msg),
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&written))
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|| (tst <= 8
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&& !TEST_int_eq(SSL_read_early_data(sssl, buf, sizeof(buf),
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&readbytes),
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SSL_READ_EARLY_DATA_SUCCESS)))
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goto err;
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if (tst <= 8) {
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if (!TEST_int_gt(SSL_connect(cssl), 0))
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goto err;
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} else {
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if (!TEST_int_le(SSL_connect(cssl), 0))
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goto err;
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}
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if (!TEST_int_eq(SSL_read_early_data(sssl, buf, sizeof(buf),
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&readbytes),
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SSL_READ_EARLY_DATA_FINISH))
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goto err;
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}
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/* Perform handshake (or complete it if doing early data ) */
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|
|
if (!TEST_true(create_ssl_connection(sssl, cssl, SSL_ERROR_NONE)))
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Check there were no unexpected CCS messages, all record versions
|
||
|
|
* were as expected, and that the session ids were reflected by the server
|
||
|
|
* correctly.
|
||
|
|
*/
|
||
|
|
if (!TEST_false(badccs) || !TEST_false(badvers) || !TEST_false(badsessid))
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
switch (tst) {
|
||
|
|
case 0:
|
||
|
|
if (!TEST_true(sccsseen)
|
||
|
|
|| !TEST_true(ccsaftersh)
|
||
|
|
|| !TEST_false(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_gt(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 1:
|
||
|
|
if (!TEST_true(sccsseen)
|
||
|
|
|| !TEST_false(ccsaftersh)
|
||
|
|
|| !TEST_false(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_eq(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 2:
|
||
|
|
if (!TEST_false(sccsseen)
|
||
|
|
|| !TEST_true(ccsaftersh)
|
||
|
|
|| !TEST_false(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_gt(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 3:
|
||
|
|
if (!TEST_true(sccsseen)
|
||
|
|
|| !TEST_true(ccsaftersh)
|
||
|
|
|| !TEST_false(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_gt(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 4:
|
||
|
|
if (!TEST_true(sccsseen)
|
||
|
|
|| !TEST_false(ccsaftersh)
|
||
|
|
|| !TEST_false(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_eq(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 5:
|
||
|
|
if (!TEST_false(sccsseen)
|
||
|
|
|| !TEST_true(ccsaftersh)
|
||
|
|
|| !TEST_false(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_gt(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 6:
|
||
|
|
if (!TEST_true(sccsseen)
|
||
|
|
|| !TEST_false(ccsaftersh)
|
||
|
|
|| !TEST_true(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_gt(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 7:
|
||
|
|
if (!TEST_true(sccsseen)
|
||
|
|
|| !TEST_false(ccsaftersh)
|
||
|
|
|| !TEST_false(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_eq(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 8:
|
||
|
|
if (!TEST_false(sccsseen)
|
||
|
|
|| !TEST_false(ccsaftersh)
|
||
|
|
|| !TEST_true(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_gt(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 9:
|
||
|
|
if (!TEST_true(sccsseen)
|
||
|
|
|| !TEST_false(ccsaftersh)
|
||
|
|
|| !TEST_true(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_gt(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 10:
|
||
|
|
if (!TEST_true(sccsseen)
|
||
|
|
|| !TEST_false(ccsaftersh)
|
||
|
|
|| !TEST_false(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_eq(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 11:
|
||
|
|
if (!TEST_false(sccsseen)
|
||
|
|
|| !TEST_false(ccsaftersh)
|
||
|
|
|| !TEST_true(ccsbeforesh)
|
||
|
|
|| !TEST_size_t_gt(chsessidlen, 0))
|
||
|
|
goto err;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
TEST_error("Invalid test value");
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = 1;
|
||
|
|
err:
|
||
|
|
SSL_SESSION_free(sess);
|
||
|
|
SSL_free(sssl);
|
||
|
|
SSL_free(cssl);
|
||
|
|
SSL_CTX_free(sctx);
|
||
|
|
SSL_CTX_free(cctx);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
OPT_TEST_DECLARE_USAGE("certfile privkeyfile\n")
|
||
|
|
|
||
|
|
int setup_tests(void)
|
||
|
|
{
|
||
|
|
if (!test_skip_common_options()) {
|
||
|
|
TEST_error("Error parsing test options\n");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!TEST_ptr(cert = test_get_argument(0))
|
||
|
|
|| !TEST_ptr(privkey = test_get_argument(1)))
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
ADD_ALL_TESTS(test_tls13ccs, 12);
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
void cleanup_tests(void)
|
||
|
|
{
|
||
|
|
BIO_meth_free(method_watchccs);
|
||
|
|
}
|