-/* ssl/statem/statem_clnt.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/md5.h>
-#ifndef OPENSSL_NO_DH
-# include <openssl/dh.h>
-#endif
+#include <openssl/dh.h>
#include <openssl/bn.h>
-#ifndef OPENSSL_NO_ENGINE
-# include <openssl/engine.h>
-#endif
+#include <openssl/engine.h>
static ossl_inline int cert_req_allowed(SSL *s);
static int key_exchange_expected(SSL *s);
-static int ssl_set_version(SSL *s);
static int ca_dn_cmp(const X509_NAME *const *a, const X509_NAME *const *b);
static int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
unsigned char *p);
return WORK_ERROR;
}
-/*
- * Work out what version we should be using for the initial ClientHello if
- * the version is currently set to (D)TLS_ANY_VERSION.
- * Returns 1 on success
- * Returns 0 on error
- */
-static int ssl_set_version(SSL *s)
-{
- unsigned long mask, options = s->options;
-
- if (s->method->version == TLS_ANY_VERSION) {
- /*
- * SSL_OP_NO_X disables all protocols above X *if* there are
- * some protocols below X enabled. This is required in order
- * to maintain "version capability" vector contiguous. So
- * that if application wants to disable TLS1.0 in favour of
- * TLS1>=1, it would be insufficient to pass SSL_NO_TLSv1, the
- * answer is SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3.
- */
- mask = SSL_OP_NO_TLSv1_1 | SSL_OP_NO_TLSv1
-#if !defined(OPENSSL_NO_SSL3)
- | SSL_OP_NO_SSLv3
-#endif
- ;
-#if !defined(OPENSSL_NO_TLS1_2_CLIENT)
- if (options & SSL_OP_NO_TLSv1_2) {
- if ((options & mask) != mask) {
- s->version = TLS1_1_VERSION;
- } else {
- SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_NO_PROTOCOLS_AVAILABLE);
- return 0;
- }
- } else {
- s->version = TLS1_2_VERSION;
- }
-#else
- if ((options & mask) == mask) {
- SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_NO_PROTOCOLS_AVAILABLE);
- return 0;
- }
- s->version = TLS1_1_VERSION;
-#endif
-
- mask &= ~SSL_OP_NO_TLSv1_1;
- if ((options & SSL_OP_NO_TLSv1_1) && (options & mask) != mask)
- s->version = TLS1_VERSION;
- mask &= ~SSL_OP_NO_TLSv1;
-#if !defined(OPENSSL_NO_SSL3)
- if ((options & SSL_OP_NO_TLSv1) && (options & mask) != mask)
- s->version = SSL3_VERSION;
-#endif
-
- if (s->version != TLS1_2_VERSION && tls1_suiteb(s)) {
- SSLerr(SSL_F_SSL_SET_VERSION,
- SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
- return 0;
- }
-
- if (s->version == SSL3_VERSION && FIPS_mode()) {
- SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
- return 0;
- }
-
- } else if (s->method->version == DTLS_ANY_VERSION) {
- /* Determine which DTLS version to use */
- /* If DTLS 1.2 disabled correct the version number */
- if (options & SSL_OP_NO_DTLSv1_2) {
- if (tls1_suiteb(s)) {
- SSLerr(SSL_F_SSL_SET_VERSION,
- SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
- return 0;
- }
- /*
- * Disabling all versions is silly: return an error.
- */
- if (options & SSL_OP_NO_DTLSv1) {
- SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_WRONG_SSL_VERSION);
- return 0;
- }
- /*
- * Update method so we don't use any DTLS 1.2 features.
- */
- s->method = DTLSv1_client_method();
- s->version = DTLS1_VERSION;
- } else {
- /*
- * We only support one version: update method
- */
- if (options & SSL_OP_NO_DTLSv1)
- s->method = DTLSv1_2_client_method();
- s->version = DTLS1_2_VERSION;
- }
- }
-
- s->client_version = s->version;
-
- return 1;
-}
-
int tls_construct_client_hello(SSL *s)
{
unsigned char *buf;
unsigned char *p, *d;
int i;
+ int protverr;
unsigned long l;
int al = 0;
#ifndef OPENSSL_NO_COMP
buf = (unsigned char *)s->init_buf->data;
/* Work out what SSL/TLS/DTLS version to use */
- if (ssl_set_version(s) == 0)
+ protverr = ssl_set_client_hello_version(s);
+ if (protverr != 0) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, protverr);
goto err;
+ }
- if ((sess == NULL) || (sess->ssl_version != s->version) ||
+ if ((sess == NULL) ||
+ !ssl_version_supported(s, sess->ssl_version) ||
/*
* In the case of EAP-FAST, we can have a pre-shared
* "ticket" without a session ID.
const SSL_CIPHER *c;
PACKET session_id;
size_t session_id_len;
- unsigned char *cipherchars;
+ const unsigned char *cipherchars;
int i, al = SSL_AD_INTERNAL_ERROR;
unsigned int compression;
+ unsigned int sversion;
+ int protverr;
#ifndef OPENSSL_NO_COMP
SSL_COMP *comp;
#endif
- if (s->method->version == TLS_ANY_VERSION) {
- unsigned int sversion;
-
- if (!PACKET_get_net_2(pkt, &sversion)) {
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
- goto f_err;
- }
-
-#if TLS_MAX_VERSION != TLS1_2_VERSION
-#error Code needs updating for new TLS version
-#endif
-#ifndef OPENSSL_NO_SSL3
- if ((sversion == SSL3_VERSION) && !(s->options & SSL_OP_NO_SSLv3)) {
- if (FIPS_mode()) {
- SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO,
- SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
- al = SSL_AD_PROTOCOL_VERSION;
- goto f_err;
- }
- s->method = SSLv3_client_method();
- } else
-#endif
- if ((sversion == TLS1_VERSION) && !(s->options & SSL_OP_NO_TLSv1)) {
- s->method = TLSv1_client_method();
- } else if ((sversion == TLS1_1_VERSION) &&
- !(s->options & SSL_OP_NO_TLSv1_1)) {
- s->method = TLSv1_1_client_method();
- } else if ((sversion == TLS1_2_VERSION) &&
- !(s->options & SSL_OP_NO_TLSv1_2)) {
- s->method = TLSv1_2_client_method();
- } else {
- SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_UNSUPPORTED_PROTOCOL);
- al = SSL_AD_PROTOCOL_VERSION;
- goto f_err;
- }
- s->session->ssl_version = s->version = s->method->version;
-
- if (!ssl_security(s, SSL_SECOP_VERSION, 0, s->version, NULL)) {
- SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_VERSION_TOO_LOW);
- al = SSL_AD_PROTOCOL_VERSION;
- goto f_err;
- }
- } else if (s->method->version == DTLS_ANY_VERSION) {
- /* Work out correct protocol version to use */
- unsigned int hversion;
- int options;
-
- if (!PACKET_get_net_2(pkt, &hversion)) {
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
- goto f_err;
- }
-
- options = s->options;
- if (hversion == DTLS1_2_VERSION && !(options & SSL_OP_NO_DTLSv1_2))
- s->method = DTLSv1_2_client_method();
- else if (tls1_suiteb(s)) {
- SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO,
- SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
- s->version = hversion;
- al = SSL_AD_PROTOCOL_VERSION;
- goto f_err;
- } else if (hversion == DTLS1_VERSION && !(options & SSL_OP_NO_DTLSv1))
- s->method = DTLSv1_client_method();
- else {
- SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_WRONG_SSL_VERSION);
- s->version = hversion;
- al = SSL_AD_PROTOCOL_VERSION;
- goto f_err;
- }
- s->session->ssl_version = s->version = s->method->version;
- } else {
- unsigned char *vers;
+ if (!PACKET_get_net_2(pkt, &sversion)) {
+ al = SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
+ goto f_err;
+ }
- if (!PACKET_get_bytes(pkt, &vers, 2)) {
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH);
- goto f_err;
- }
- if ((vers[0] != (s->version >> 8))
- || (vers[1] != (s->version & 0xff))) {
- SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_WRONG_SSL_VERSION);
- s->version = (s->version & 0xff00) | vers[1];
- al = SSL_AD_PROTOCOL_VERSION;
- goto f_err;
- }
+ protverr = ssl_choose_client_version(s, sversion);
+ if (protverr != 0) {
+ al = SSL_AD_PROTOCOL_VERSION;
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, protverr);
+ goto f_err;
}
/* load the server hello data */
*/
if (s->version >= TLS1_VERSION && s->tls_session_secret_cb &&
s->session->tlsext_tick) {
- SSL_CIPHER *pref_cipher = NULL;
+ const 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->session->master_key_length,
}
}
+ s->session->ssl_version = s->version;
s->session->session_id_length = session_id_len;
/* session_id_len could be 0 */
memcpy(s->session->session_id, PACKET_data(&session_id),
session_id_len);
}
+ /* Session version and negotiated protocol version should match */
+ if (s->version != s->session->ssl_version) {
+ al = SSL_AD_PROTOCOL_VERSION;
+
+ SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO,
+ SSL_R_SSL_SESSION_VERSION_MISMATCH);
+ goto f_err;
+ }
+
c = ssl_get_cipher_by_char(s, cipherchars);
if (c == NULL) {
/* unknown cipher */
SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_UNKNOWN_CIPHER_RETURNED);
goto f_err;
}
- /* Set version disabled mask now we know version */
- if (!SSL_USE_TLS1_2_CIPHERS(s))
- s->s3->tmp.mask_ssl = SSL_TLSV1_2;
- else
- s->s3->tmp.mask_ssl = 0;
- /* Skip TLS v1.0 ciphersuites if SSLv3 */
- if ((c->algorithm_ssl & SSL_TLSV1) && s->version == SSL3_VERSION)
- s->s3->tmp.mask_ssl |= SSL_TLSV1;
/*
- * If it is a disabled cipher we didn't send it in client hello, so
- * return an error.
+ * Now that we know the version, update the check to see if it's an allowed
+ * version.
+ */
+ s->s3->tmp.min_ver = s->version;
+ s->s3->tmp.max_ver = s->version;
+ /*
+ * If it is a disabled cipher we either didn't send it in client hello,
+ * or it's not allowed for the selected protocol. So we return an error.
*/
if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_CHECK)) {
al = SSL_AD_ILLEGAL_PARAMETER;
int al, i, ret = MSG_PROCESS_ERROR, exp_idx;
unsigned long cert_list_len, cert_len;
X509 *x = NULL;
- unsigned char *certstart, *certbytes;
+ const unsigned char *certstart, *certbytes;
STACK_OF(X509) *sk = NULL;
EVP_PKEY *pkey = NULL;
}
i = ssl_verify_cert_chain(s, sk);
- if (s->verify_mode != SSL_VERIFY_NONE && i <= 0) {
+ if ((s->verify_mode & SSL_VERIFY_PEER) && i <= 0) {
al = ssl_verify_alarm_type(s->verify_result);
SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE,
SSL_R_CERTIFICATE_VERIFY_FAILED);
PACKET prime, generator, pub_key;
DH *dh;
+ BIGNUM *p, *g, *bnpub_key;
if (!PACKET_get_length_prefixed_2(pkt, &prime)
|| !PACKET_get_length_prefixed_2(pkt, &generator)
goto err;
}
- if ((dh->p = BN_bin2bn(PACKET_data(&prime),
- PACKET_remaining(&prime), NULL)) == NULL
- || (dh->g = BN_bin2bn(PACKET_data(&generator),
- PACKET_remaining(&generator), NULL)) == NULL
- || (dh->pub_key =
- BN_bin2bn(PACKET_data(&pub_key),
- PACKET_remaining(&pub_key), NULL)) == NULL) {
+ p = BN_bin2bn(PACKET_data(&prime), PACKET_remaining(&prime), NULL);
+ g = BN_bin2bn(PACKET_data(&generator), PACKET_remaining(&generator),
+ NULL);
+ bnpub_key = BN_bin2bn(PACKET_data(&pub_key), PACKET_remaining(&pub_key),
+ NULL);
+ if (p == NULL || g == NULL || bnpub_key == NULL) {
SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_BN_LIB);
+ BN_free(p);
+ BN_free(g);
+ BN_free(bnpub_key);
goto err;
}
- if (BN_is_zero(dh->p) || BN_is_zero(dh->g) || BN_is_zero(dh->pub_key)) {
+ if (BN_is_zero(p) || BN_is_zero(g) || BN_is_zero(bnpub_key)) {
SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_BAD_DH_VALUE);
+ BN_free(p);
+ BN_free(g);
+ BN_free(bnpub_key);
goto f_err;
}
+ if (!DH_set0_pqg(dh, p, NULL, g)) {
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_BN_LIB);
+ BN_free(p);
+ BN_free(g);
+ BN_free(bnpub_key);
+ goto err;
+ }
+
+ if (!DH_set0_key(dh, bnpub_key, NULL)) {
+ SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_BN_LIB);
+ BN_free(bnpub_key);
+ goto err;
+ }
+
if (!ssl_security(s, SSL_SECOP_TMP_DH, DH_security_bits(dh), 0, dh)) {
al = SSL_AD_HANDSHAKE_FAILURE;
SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_DH_KEY_TOO_SMALL);
#ifndef OPENSSL_NO_EC
else if (alg_k & (SSL_kECDHE | SSL_kECDHEPSK)) {
PACKET encoded_pt;
- unsigned char *ecparams;
+ const unsigned char *ecparams;
int curve_nid;
/*
}
if (SSL_USE_SIGALGS(s)) {
- unsigned char *sigalgs;
+ const unsigned char *sigalgs;
int rv;
if (!PACKET_get_bytes(pkt, &sigalgs, 2)) {
SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
#ifdef SSL_DEBUG
fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
#endif
- } else if (pkey->type == EVP_PKEY_RSA) {
+ } else if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) {
md = EVP_md5_sha1();
} else {
md = EVP_sha1();
int ret = MSG_PROCESS_ERROR;
unsigned int list_len, ctype_num, i, name_len;
X509_NAME *xn = NULL;
- unsigned char *data;
- unsigned char *namestart, *namebytes;
+ const unsigned char *data;
+ const unsigned char *namestart, *namebytes;
STACK_OF(X509_NAME) *ca_sk = NULL;
if ((ca_sk = sk_X509_NAME_new(ca_dn_cmp)) == NULL) {
SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
goto err;
}
+ xn = NULL;
}
/* we should setup a certificate to return.... */
err:
ossl_statem_set_error(s);
done:
+ X509_NAME_free(xn);
sk_X509_NAME_pop_free(ca_sk, X509_NAME_free);
return ret;
}
}
}
+#ifndef OPENSSL_NO_CT
+ if (s->ct_validation_callback != NULL) {
+ /* Note we validate the SCTs whether or not we abort on error */
+ if (!ssl_validate_ct(s) && (s->verify_mode & SSL_VERIFY_PEER)) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+ return MSG_PROCESS_ERROR;
+ }
+ }
+#endif
+
#ifndef OPENSSL_NO_SCTP
/* Only applies to renegotiation */
if (SSL_IS_DTLS(s) && BIO_dgram_is_sctp(SSL_get_wbio(s))
}
pkey = X509_get0_pubkey(s->session->peer);
- if ((pkey == NULL) || (pkey->type != EVP_PKEY_RSA)
- || (pkey->pkey.rsa == NULL)) {
+ if (EVP_PKEY_get0_RSA(pkey) == NULL) {
SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
ERR_R_INTERNAL_ERROR);
goto err;
#ifndef OPENSSL_NO_DH
else if (alg_k & (SSL_kDHE | SSL_kDHEPSK)) {
DH *dh_clnt = NULL;
+ BIGNUM *pub_key;
skey = s->s3->peer_tmp;
if (skey == NULL) {
SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
/* send off the data */
- n = BN_num_bytes(dh_clnt->pub_key);
+ DH_get0_key(dh_clnt, &pub_key, NULL);
+ n = BN_num_bytes(pub_key);
s2n(n, p);
- BN_bn2bin(dh_clnt->pub_key, p);
+ BN_bn2bin(pub_key, p);
n += 2;
EVP_PKEY_free(ckey);
ckey = NULL;
#endif
#ifndef OPENSSL_NO_EC
- else if (alg_k & (SSL_kECDHE | SSL_kECDHr | SSL_kECDHe | SSL_kECDHEPSK)) {
+ else if (alg_k & (SSL_kECDHE | SSL_kECDHEPSK)) {
- if (s->s3->peer_tmp != NULL) {
- skey = s->s3->peer_tmp;
- } else {
- /* Get the Server Public Key from Cert */
- skey = X509_get0_pubkey(s->session->peer);
- if ((skey == NULL)
- || (skey->type != EVP_PKEY_EC)
- || (skey->pkey.ec == NULL)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
+ skey = s->s3->peer_tmp;
+ if ((skey == NULL) || EVP_PKEY_get0_EC_KEY(skey) == NULL) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
ERR_R_INTERNAL_ERROR);
- goto err;
+ goto err;
}
- }
ckey = ssl_generate_pkey(skey, NID_undef);
goto err;
}
#ifndef OPENSSL_NO_GOST
- if (pkey->type == NID_id_GostR3410_2001
- || pkey->type == NID_id_GostR3410_2012_256
- || pkey->type == NID_id_GostR3410_2012_512) {
- BUF_reverse(p + 2, NULL, u);
+ {
+ int pktype = EVP_PKEY_id(pkey);
+ if (pktype == NID_id_GostR3410_2001
+ || pktype == NID_id_GostR3410_2012_256
+ || pktype == NID_id_GostR3410_2012_512)
+ BUF_reverse(p + 2, NULL, u);
}
#endif
SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
SSL_R_MISSING_ECDSA_SIGNING_CERT);
goto f_err;
- } else if (alg_k & (SSL_kECDHr | SSL_kECDHe)) {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, SSL_R_MISSING_ECDH_CERT);
- goto f_err;
}
#endif
pkey = X509_get0_pubkey(s->session->peer);
unsigned char *p)
{
int i, j = 0;
- SSL_CIPHER *c;
+ const SSL_CIPHER *c;
unsigned char *q;
int empty_reneg_info_scsv = !s->renegotiate;
/* Set disabled masks for this session */
/* Skip disabled ciphers */
if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
continue;
-#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
- if (c->id == SSL3_CK_SCSV) {
- if (!empty_reneg_info_scsv)
- continue;
- else
- empty_reneg_info_scsv = 0;
- }
-#endif
j = s->method->put_cipher_by_char(c, p);
p += j;
}
};
j = s->method->put_cipher_by_char(&scsv, p);
p += j;
-#ifdef OPENSSL_RI_DEBUG
- fprintf(stderr,
- "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
-#endif
}
if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
static SSL_CIPHER scsv = {
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