#endif
static int ca_dn_cmp(const X509_NAME *const *a, const X509_NAME *const *b);
+#ifndef OPENSSL_NO_TLSEXT
+static int ssl3_check_finished(SSL *s);
+#endif
#ifndef OPENSSL_NO_SSL3_METHOD
static const SSL_METHOD *ssl3_get_client_method(int ver)
break;
case SSL3_ST_CR_CERT_A:
case SSL3_ST_CR_CERT_B:
+#ifndef OPENSSL_NO_TLSEXT
+ /* Noop (ret = 0) for everything but EAP-FAST. */
+ ret = ssl3_check_finished(s);
+ if (ret < 0)
+ goto end;
+ if (ret == 1) {
+ s->hit = 1;
+ s->state = SSL3_ST_CR_FINISHED_A;
+ s->init_num = 0;
+ break;
+ }
+#endif
/* Check if it is anon DH/ECDH, SRP auth */
/* or PSK */
if (!
case SSL3_ST_CR_FINISHED_A:
case SSL3_ST_CR_FINISHED_B:
- s->s3->flags |= SSL3_FLAGS_CCS_OK;
+ if (!s->s3->change_cipher_spec)
+ s->s3->flags |= SSL3_FLAGS_CCS_OK;
ret = ssl3_get_finished(s, SSL3_ST_CR_FINISHED_A,
SSL3_ST_CR_FINISHED_B);
if (ret <= 0)
case SSL_ST_OK:
/* clean a few things up */
ssl3_cleanup_key_block(s);
-
- if (s->init_buf != NULL) {
- BUF_MEM_free(s->init_buf);
- s->init_buf = NULL;
- }
+ BUF_MEM_free(s->init_buf);
+ s->init_buf = NULL;
/*
* If we are not 'joining' the last two packets, remove the
}
end:
s->in_handshake--;
- if (buf != NULL)
- BUF_MEM_free(buf);
+ BUF_MEM_free(buf);
if (cb != NULL)
cb(s, SSL_CB_CONNECT_EXIT, ret);
return (ret);
buf = (unsigned char *)s->init_buf->data;
if (s->state == SSL3_ST_CW_CLNT_HELLO_A) {
SSL_SESSION *sess = s->session;
- if ((sess == NULL) ||
- (sess->ssl_version != s->version) ||
- !sess->session_id_length || (sess->not_resumable)) {
+ if ((sess == NULL) || (sess->ssl_version != s->version) ||
+#ifdef OPENSSL_NO_TLSEXT
+ !sess->session_id_length ||
+#else
+ /*
+ * In the case of EAP-FAST, we can have a pre-shared
+ * "ticket" without a session ID.
+ */
+ (!sess->session_id_length && !sess->tlsext_tick) ||
+#endif
+ (sess->not_resumable)) {
if (!ssl_get_new_session(s, 0))
goto err;
}
}
#ifndef OPENSSL_NO_TLSEXT
/*
- * check if we want to resume the session based on external pre-shared
- * secret
+ * Check if we can resume the session based on external pre-shared secret.
+ * EAP-FAST (RFC 4851) supports two types of session resumption.
+ * Resumption based on server-side state works with session IDs.
+ * Resumption based on pre-shared Protected Access Credentials (PACs)
+ * works by overriding the SessionTicket extension at the application
+ * layer, and does not send a session ID. (We do not know whether EAP-FAST
+ * servers would honour the session ID.) Therefore, the session ID alone
+ * is not a reliable indicator of session resumption, so we first check if
+ * we can resume, and later peek at the next handshake message to see if the
+ * server wants to resume.
*/
- if (s->version >= TLS1_VERSION && s->tls_session_secret_cb) {
+ if (s->version >= TLS1_VERSION && s->tls_session_secret_cb &&
+ s->session->tlsext_tick) {
SSL_CIPHER *pref_cipher = NULL;
s->session->master_key_length = sizeof(s->session->master_key);
if (s->tls_session_secret_cb(s, s->session->master_key,
s->tls_session_secret_cb_arg)) {
s->session->cipher = pref_cipher ?
pref_cipher : ssl_get_cipher_by_char(s, p + j);
- s->hit = 1;
+ } else {
+ SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
+ al = SSL_AD_INTERNAL_ERROR;
+ goto f_err;
}
}
#endif /* OPENSSL_NO_TLSEXT */
- if (!s->hit && j != 0 && j == s->session->session_id_length
+ if (j != 0 && j == s->session->session_id_length
&& memcmp(p, s->session->session_id, j) == 0) {
if (s->sid_ctx_length != s->session->sid_ctx_length
|| memcmp(s->session->sid_ctx, s->sid_ctx, s->sid_ctx_length)) {
goto f_err;
}
s->hit = 1;
- }
- /* a miss or crap from the other end */
- if (!s->hit) {
+ } else {
/*
- * If we were trying for session-id reuse, make a new SSL_SESSION so
- * we don't stuff up other people
+ * If we were trying for session-id reuse but the server
+ * didn't echo the ID, make a new SSL_SESSION.
+ * In the case of EAP-FAST and PAC, we do not send a session ID,
+ * so the PAC-based session secret is always preserved. It'll be
+ * overwritten if the server refuses resumption.
*/
if (s->session->session_id_length > 0) {
if (!ssl_get_new_session(s, 0)) {
if ((sk = sk_X509_new_null()) == NULL) {
SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, ERR_R_MALLOC_FAILURE);
- goto err;
+ goto done;
}
n2l3(p, llen);
}
if (!sk_X509_push(sk, x)) {
SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, ERR_R_MALLOC_FAILURE);
- goto err;
+ goto done;
}
x = NULL;
nc += l + 3;
sc = ssl_sess_cert_new();
if (sc == NULL)
- goto err;
+ goto done;
ssl_sess_cert_free(s->session->sess_cert);
s->session->sess_cert = sc;
* Why would the following ever happen? We just created sc a couple
* of lines ago.
*/
- if (sc->peer_pkeys[i].x509 != NULL)
- X509_free(sc->peer_pkeys[i].x509);
+ X509_free(sc->peer_pkeys[i].x509);
sc->peer_pkeys[i].x509 = x;
sc->peer_key = &(sc->peer_pkeys[i]);
- if (s->session->peer != NULL)
- X509_free(s->session->peer);
+ X509_free(s->session->peer);
CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
s->session->peer = x;
} else {
sc->peer_cert_type = i;
sc->peer_key = NULL;
- if (s->session->peer != NULL)
- X509_free(s->session->peer);
+ X509_free(s->session->peer);
s->session->peer = NULL;
}
s->session->verify_result = s->verify_result;
x = NULL;
ret = 1;
- if (0) {
+ goto done;
+
f_err:
- ssl3_send_alert(s, SSL3_AL_FATAL, al);
- }
- err:
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
+ done:
EVP_PKEY_free(pkey);
X509_free(x);
sk_X509_pop_free(sk, X509_free);
*/
if (alg_k & SSL_kPSK) {
s->session->sess_cert = ssl_sess_cert_new();
- if (s->ctx->psk_identity_hint)
- OPENSSL_free(s->ctx->psk_identity_hint);
+ OPENSSL_free(s->ctx->psk_identity_hint);
s->ctx->psk_identity_hint = NULL;
}
#endif
*/
memcpy(tmp_id_hint, p, i);
memset(tmp_id_hint + i, 0, PSK_MAX_IDENTITY_LEN + 1 - i);
- if (s->ctx->psk_identity_hint != NULL)
- OPENSSL_free(s->ctx->psk_identity_hint);
+ OPENSSL_free(s->ctx->psk_identity_hint);
s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
if (s->ctx->psk_identity_hint == NULL) {
al = SSL_AD_HANDSHAKE_FAILURE;
/* get the certificate types */
ctype_num = *(p++);
- if (s->cert->ctypes) {
- OPENSSL_free(s->cert->ctypes);
- s->cert->ctypes = NULL;
- }
+ OPENSSL_free(s->cert->ctypes);
+ s->cert->ctypes = NULL;
if (ctype_num > SSL3_CT_NUMBER) {
/* If we exceed static buffer copy all to cert structure */
s->cert->ctypes = OPENSSL_malloc(ctype_num);
/* we should setup a certificate to return.... */
s->s3->tmp.cert_req = 1;
s->s3->tmp.ctype_num = ctype_num;
- if (s->s3->tmp.ca_names != NULL)
- sk_X509_NAME_pop_free(s->s3->tmp.ca_names, X509_NAME_free);
+ sk_X509_NAME_pop_free(s->s3->tmp.ca_names, X509_NAME_free);
s->s3->tmp.ca_names = ca_sk;
ca_sk = NULL;
ret = 1;
err:
- if (ca_sk != NULL)
- sk_X509_NAME_pop_free(ca_sk, X509_NAME_free);
+ sk_X509_NAME_pop_free(ca_sk, X509_NAME_free);
return (ret);
}
SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
- if (s->session->tlsext_tick) {
- OPENSSL_free(s->session->tlsext_tick);
- s->session->tlsext_ticklen = 0;
- }
+ OPENSSL_free(s->session->tlsext_tick);
+ s->session->tlsext_ticklen = 0;
s->session->tlsext_tick = OPENSSL_malloc(ticklen);
if (!s->session->tlsext_tick) {
SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET, ERR_R_MALLOC_FAILURE);
SSLerr(SSL_F_SSL3_GET_CERT_STATUS, SSL_R_LENGTH_MISMATCH);
goto f_err;
}
- if (s->tlsext_ocsp_resp)
- OPENSSL_free(s->tlsext_ocsp_resp);
+ OPENSSL_free(s->tlsext_ocsp_resp);
s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
if (!s->tlsext_ocsp_resp) {
al = SSL_AD_INTERNAL_ERROR;
/* Free allocated memory */
BN_CTX_free(bn_ctx);
- if (encodedPoint != NULL)
- OPENSSL_free(encodedPoint);
+ OPENSSL_free(encodedPoint);
EC_KEY_free(clnt_ecdh);
EVP_PKEY_free(srvr_pub_pkey);
}
ERR_R_INTERNAL_ERROR);
goto err;
}
- if (s->session->srp_username != NULL)
- OPENSSL_free(s->session->srp_username);
+ OPENSSL_free(s->session->srp_username);
s->session->srp_username = BUF_strdup(s->srp_ctx.login);
if (s->session->srp_username == NULL) {
SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
t += psk_len;
s2n(psk_len, t);
- if (s->session->psk_identity_hint != NULL)
- OPENSSL_free(s->session->psk_identity_hint);
+ OPENSSL_free(s->session->psk_identity_hint);
s->session->psk_identity_hint =
BUF_strdup(s->ctx->psk_identity_hint);
if (s->ctx->psk_identity_hint != NULL
goto psk_err;
}
- if (s->session->psk_identity != NULL)
- OPENSSL_free(s->session->psk_identity);
+ OPENSSL_free(s->session->psk_identity);
s->session->psk_identity = BUF_strdup(identity);
if (s->session->psk_identity == NULL) {
SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
s->
session->master_key,
pms, pmslen);
- OPENSSL_cleanse(pms, pmslen);
- OPENSSL_free(pms);
+ OPENSSL_clear_free(pms, pmslen);
s->cert->pms = NULL;
if (s->session->master_key_length < 0) {
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
err:
- if (pms) {
- OPENSSL_cleanse(pms, pmslen);
- OPENSSL_free(pms);
- s->cert->pms = NULL;
- }
+ OPENSSL_clear_free(pms, pmslen);
+ s->cert->pms = NULL;
#ifndef OPENSSL_NO_EC
BN_CTX_free(bn_ctx);
- if (encodedPoint != NULL)
- OPENSSL_free(encodedPoint);
+ OPENSSL_free(encodedPoint);
EC_KEY_free(clnt_ecdh);
EVP_PKEY_free(srvr_pub_pkey);
#endif
SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
}
- if (x509 != NULL)
- X509_free(x509);
- if (pkey != NULL)
- EVP_PKEY_free(pkey);
+ X509_free(x509);
+ EVP_PKEY_free(pkey);
if (i && !ssl3_check_client_certificate(s))
i = 0;
if (i == 0) {
return (0);
}
+#ifndef OPENSSL_NO_TLSEXT
/*
- * Check to see if handshake is full or resumed. Usually this is just a case
- * of checking to see if a cache hit has occurred. In the case of session
- * tickets we have to check the next message to be sure.
+ * Normally, we can tell if the server is resuming the session from
+ * the session ID. EAP-FAST (RFC 4851), however, relies on the next server
+ * message after the ServerHello to determine if the server is resuming.
+ * Therefore, we allow EAP-FAST to peek ahead.
+ * ssl3_check_finished returns 1 if we are resuming from an external
+ * pre-shared secret, we have a "ticket" and the next server handshake message
+ * is Finished; and 0 otherwise. It returns -1 upon an error.
*/
+static int ssl3_check_finished(SSL *s)
+{
+ int ok = 0;
+
+ if (s->version < TLS1_VERSION || !s->tls_session_secret_cb ||
+ !s->session->tlsext_tick)
+ return 0;
+
+ /* Need to permit this temporarily, in case the next message is Finished. */
+ s->s3->flags |= SSL3_FLAGS_CCS_OK;
+ /*
+ * This function is called when we might get a Certificate message instead,
+ * so permit appropriate message length.
+ * We ignore the return value as we're only interested in the message type
+ * and not its length.
+ */
+ s->method->ssl_get_message(s,
+ SSL3_ST_CR_CERT_A,
+ SSL3_ST_CR_CERT_B,
+ -1, s->max_cert_list, &ok);
+ s->s3->flags &= ~SSL3_FLAGS_CCS_OK;
+
+ if (!ok)
+ return -1;
+
+ s->s3->tmp.reuse_message = 1;
+
+ if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
+ return 1;
+
+ /* If we're not done, then the CCS arrived early and we should bail. */
+ if (s->s3->change_cipher_spec) {
+ SSLerr(SSL_F_SSL3_CHECK_FINISHED, SSL_R_CCS_RECEIVED_EARLY);
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ return 0;
+}
-#ifndef OPENSSL_NO_TLSEXT
# ifndef OPENSSL_NO_NEXTPROTONEG
int ssl3_send_next_proto(SSL *s)
{
projects / openssl.git / blobdiff