* 1: Success
* 0: Error
*/
-int ossl_statem_server_construct_message(SSL *s)
+int ossl_statem_server_construct_message(SSL *s, WPACKET *pkt)
{
OSSL_STATEM *st = &s->statem;
+ int (*confunc) (SSL *s, WPACKET *pkt) = NULL;
+ int ret = 1, mt;
- switch (st->hand_state) {
- default:
- /* Shouldn't happen */
- return 0;
+ if (st->hand_state == TLS_ST_SW_CHANGE) {
+ /* Special case becase it is a different content type */
+ if (SSL_IS_DTLS(s))
+ return dtls_construct_change_cipher_spec(s, pkt);
- case DTLS_ST_SW_HELLO_VERIFY_REQUEST:
- return dtls_construct_hello_verify_request(s);
+ return tls_construct_change_cipher_spec(s, pkt);
+ } else if (st->hand_state == DTLS_ST_SW_HELLO_VERIFY_REQUEST) {
+ /* Special case because we don't call ssl_close_construct_packet() */
+ return dtls_construct_hello_verify_request(s, pkt);
+ } else {
+ switch (st->hand_state) {
+ default:
+ /* Shouldn't happen */
+ return 0;
- case TLS_ST_SW_HELLO_REQ:
- return tls_construct_hello_request(s);
+ case TLS_ST_SW_HELLO_REQ:
+ /* No construction function needed */
+ mt = SSL3_MT_HELLO_REQUEST;
+ break;
- case TLS_ST_SW_SRVR_HELLO:
- return tls_construct_server_hello(s);
+ case TLS_ST_SW_SRVR_HELLO:
+ confunc = tls_construct_server_hello;
+ mt = SSL3_MT_SERVER_HELLO;
+ break;
- case TLS_ST_SW_CERT:
- return tls_construct_server_certificate(s);
+ case TLS_ST_SW_CERT:
+ confunc = tls_construct_server_certificate;
+ mt = SSL3_MT_CERTIFICATE;
+ break;
- case TLS_ST_SW_KEY_EXCH:
- return tls_construct_server_key_exchange(s);
+ case TLS_ST_SW_KEY_EXCH:
+ confunc = tls_construct_server_key_exchange;
+ mt = SSL3_MT_SERVER_KEY_EXCHANGE;
+ break;
- case TLS_ST_SW_CERT_REQ:
- return tls_construct_certificate_request(s);
+ case TLS_ST_SW_CERT_REQ:
+ confunc = tls_construct_certificate_request;
+ mt = SSL3_MT_CERTIFICATE_REQUEST;
+ break;
- case TLS_ST_SW_SRVR_DONE:
- return tls_construct_server_done(s);
+ case TLS_ST_SW_SRVR_DONE:
+ confunc = tls_construct_server_done;
+ mt = SSL3_MT_SERVER_DONE;
+ break;
- case TLS_ST_SW_SESSION_TICKET:
- return tls_construct_new_session_ticket(s);
+ case TLS_ST_SW_SESSION_TICKET:
+ confunc = tls_construct_new_session_ticket;
+ mt = SSL3_MT_NEWSESSION_TICKET;
+ break;
- case TLS_ST_SW_CERT_STATUS:
- return tls_construct_cert_status(s);
+ case TLS_ST_SW_CERT_STATUS:
+ confunc = tls_construct_cert_status;
+ mt = SSL3_MT_CERTIFICATE_STATUS;
+ break;
- case TLS_ST_SW_CHANGE:
- if (SSL_IS_DTLS(s))
- return dtls_construct_change_cipher_spec(s);
- else
- return tls_construct_change_cipher_spec(s);
+ case TLS_ST_SW_FINISHED:
+ mt = SSL3_MT_FINISHED;
+ break;
+ }
- case TLS_ST_SW_FINISHED:
- return tls_construct_finished(s,
- s->method->
- ssl3_enc->server_finished_label,
- s->method->
- ssl3_enc->server_finished_label_len);
+ if (!ssl_set_handshake_header(s, pkt, mt)) {
+ SSLerr(SSL_F_OSSL_STATEM_SERVER_CONSTRUCT_MESSAGE,
+ ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+
+ if (st->hand_state == TLS_ST_SW_FINISHED)
+ ret = tls_construct_finished(s, pkt,
+ s->method->
+ ssl3_enc->server_finished_label,
+ s->method->
+ ssl3_enc->server_finished_label_len);
+ else if (confunc != NULL)
+ ret = confunc(s, pkt);
+
+ if (!ret || !ssl_close_construct_packet(s, pkt)) {
+ SSLerr(SSL_F_OSSL_STATEM_SERVER_CONSTRUCT_MESSAGE,
+ ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
}
+ return 1;
}
/*
}
#endif
-int tls_construct_hello_request(SSL *s)
-{
- WPACKET pkt;
-
- if (!WPACKET_init(&pkt, s->init_buf)
- || !ssl_set_handshake_header2(s, &pkt, SSL3_MT_HELLO_REQUEST)
- || !ssl_close_construct_packet(s, &pkt)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_HELLO_REQUEST, ERR_R_INTERNAL_ERROR);
- ossl_statem_set_error(s);
- WPACKET_cleanup(&pkt);
- return 0;
- }
-
- return 1;
-}
-
int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,
unsigned char cookie_len)
{
return 1;
}
-int dtls_construct_hello_verify_request(SSL *s)
+int dtls_construct_hello_verify_request(SSL *s, WPACKET *pkt)
{
size_t msglen;
- WPACKET pkt;
if (s->ctx->app_gen_cookie_cb == NULL ||
s->ctx->app_gen_cookie_cb(s, s->d1->cookie,
s->d1->cookie_len > 255) {
SSLerr(SSL_F_DTLS_CONSTRUCT_HELLO_VERIFY_REQUEST,
SSL_R_COOKIE_GEN_CALLBACK_FAILURE);
- ossl_statem_set_error(s);
return 0;
}
- if (!WPACKET_init(&pkt, s->init_buf)
- || !ssl_set_handshake_header2(s, &pkt,
- DTLS1_MT_HELLO_VERIFY_REQUEST)
- || !dtls_raw_hello_verify_request(&pkt, s->d1->cookie,
+ if (!ssl_set_handshake_header(s, pkt,
+ DTLS1_MT_HELLO_VERIFY_REQUEST)
+ || !dtls_raw_hello_verify_request(pkt, s->d1->cookie,
s->d1->cookie_len)
/*
* We don't call close_construct_packet() because we don't want
* to buffer this message
*/
- || !WPACKET_close(&pkt)
- || !WPACKET_get_length(&pkt, &msglen)
- || !WPACKET_finish(&pkt)) {
+ || !WPACKET_close(pkt)
+ || !WPACKET_get_length(pkt, &msglen)
+ || !WPACKET_finish(pkt)) {
SSLerr(SSL_F_DTLS_CONSTRUCT_HELLO_VERIFY_REQUEST, ERR_R_INTERNAL_ERROR);
- WPACKET_cleanup(&pkt);
- ossl_statem_set_error(s);
return 0;
}
return WORK_ERROR;
}
-int tls_construct_server_hello(SSL *s)
+int tls_construct_server_hello(SSL *s, WPACKET *pkt)
{
int sl, compm, al = SSL_AD_INTERNAL_ERROR;
size_t len;
- WPACKET pkt;
- if (!WPACKET_init(&pkt, s->init_buf)
- || !ssl_set_handshake_header2(s, &pkt, SSL3_MT_SERVER_HELLO)
- || !WPACKET_put_bytes_u16(&pkt, s->version)
+ if (!WPACKET_put_bytes_u16(pkt, s->version)
/*
* Random stuff. Filling of the server_random takes place in
* tls_process_client_hello()
*/
- || !WPACKET_memcpy(&pkt, s->s3->server_random, SSL3_RANDOM_SIZE)) {
+ || !WPACKET_memcpy(pkt, s->s3->server_random, SSL3_RANDOM_SIZE)) {
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
goto err;
}
compm = s->s3->tmp.new_compression->id;
#endif
- if (!WPACKET_sub_memcpy_u8(&pkt, s->session->session_id, sl)
- || !s->method->put_cipher_by_char(s->s3->tmp.new_cipher, &pkt, &len)
- || !WPACKET_put_bytes_u8(&pkt, compm)
+ if (!WPACKET_sub_memcpy_u8(pkt, s->session->session_id, sl)
+ || !s->method->put_cipher_by_char(s->s3->tmp.new_cipher, pkt, &len)
+ || !WPACKET_put_bytes_u8(pkt, compm)
|| !ssl_prepare_serverhello_tlsext(s)
- || !ssl_add_serverhello_tlsext(s, &pkt, &al)
- || !ssl_close_construct_packet(s, &pkt)) {
+ || !ssl_add_serverhello_tlsext(s, pkt, &al)) {
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
goto err;
}
return 1;
err:
- WPACKET_cleanup(&pkt);
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
- ossl_statem_set_error(s);
return 0;
}
-int tls_construct_server_done(SSL *s)
+int tls_construct_server_done(SSL *s, WPACKET *pkt)
{
- if (!ssl_set_handshake_header(s, SSL3_MT_SERVER_DONE, 0)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_DONE, ERR_R_INTERNAL_ERROR);
- ossl_statem_set_error(s);
- return 0;
- }
-
if (!s->s3->tmp.cert_request) {
if (!ssl3_digest_cached_records(s, 0)) {
- ossl_statem_set_error(s);
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ return 0;
}
}
-
return 1;
}
-int tls_construct_server_key_exchange(SSL *s)
+int tls_construct_server_key_exchange(SSL *s, WPACKET *pkt)
{
#ifndef OPENSSL_NO_DH
EVP_PKEY *pkdh = NULL;
- int j;
#endif
#ifndef OPENSSL_NO_EC
unsigned char *encodedPoint = NULL;
#endif
EVP_PKEY *pkey;
const EVP_MD *md = NULL;
- unsigned char *p, *d;
- int al, i;
+ int al = SSL_AD_INTERNAL_ERROR, i;
unsigned long type;
- int n;
const BIGNUM *r[4];
- int nr[4], kn;
- BUF_MEM *buf;
EVP_MD_CTX *md_ctx = EVP_MD_CTX_new();
+ size_t paramlen, paramoffset;
+
+ if (!WPACKET_get_total_written(pkt, ¶moffset)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
if (md_ctx == NULL) {
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
- al = SSL_AD_INTERNAL_ERROR;
goto f_err;
}
type = s->s3->tmp.new_cipher->algorithm_mkey;
- buf = s->init_buf;
-
r[0] = r[1] = r[2] = r[3] = NULL;
- n = 0;
#ifndef OPENSSL_NO_PSK
- if (type & SSL_PSK) {
- /*
- * reserve size for record length and PSK identity hint
- */
- n += 2;
- if (s->cert->psk_identity_hint)
- n += strlen(s->cert->psk_identity_hint);
- }
/* Plain PSK or RSAPSK nothing to do */
if (type & (SSL_kPSK | SSL_kRSAPSK)) {
} else
pkdh = EVP_PKEY_new();
if (pkdh == NULL || dhp == NULL) {
DH_free(dhp);
- al = SSL_AD_INTERNAL_ERROR;
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
ERR_R_INTERNAL_ERROR);
goto f_err;
DH *dhp = s->cert->dh_tmp_cb(s, 0, 1024);
pkdh = ssl_dh_to_pkey(dhp);
if (pkdh == NULL) {
- al = SSL_AD_INTERNAL_ERROR;
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
ERR_R_INTERNAL_ERROR);
goto f_err;
s->s3->tmp.pkey = ssl_generate_pkey_curve(curve_id);
/* Generate a new key for this curve */
if (s->s3->tmp.pkey == NULL) {
- al = SSL_AD_INTERNAL_ERROR;
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE, ERR_R_EVP_LIB);
goto f_err;
}
goto err;
}
- /*
- * We only support named (not generic) curves in ECDH ephemeral key
- * exchanges. In this situation, we need four additional bytes to
- * encode the entire ServerECDHParams structure.
- */
- n += 4 + encodedlen;
-
/*
* We'll generate the serverKeyExchange message explicitly so we
* can set these to NULLs
SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
goto f_err;
}
- for (i = 0; i < 4 && r[i] != NULL; i++) {
- nr[i] = BN_num_bytes(r[i]);
-#ifndef OPENSSL_NO_SRP
- if ((i == 2) && (type & SSL_kSRP))
- n += 1 + nr[i];
- else
-#endif
-#ifndef OPENSSL_NO_DH
- /*-
- * for interoperability with some versions of the Microsoft TLS
- * stack, we need to zero pad the DHE pub key to the same length
- * as the prime, so use the length of the prime here
- */
- if ((i == 2) && (type & (SSL_kDHE | SSL_kDHEPSK)))
- n += 2 + nr[0];
- else
-#endif
- n += 2 + nr[i];
- }
if (!(s->s3->tmp.new_cipher->algorithm_auth & (SSL_aNULL | SSL_aSRP))
&& !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_PSK)) {
al = SSL_AD_DECODE_ERROR;
goto f_err;
}
- kn = EVP_PKEY_size(pkey);
- /* Allow space for signature algorithm */
- if (SSL_USE_SIGALGS(s))
- kn += 2;
- /* Allow space for signature length */
- kn += 2;
} else {
pkey = NULL;
- kn = 0;
}
- if (!BUF_MEM_grow_clean(buf, n + SSL_HM_HEADER_LENGTH(s) + kn)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE, ERR_LIB_BUF);
- goto err;
- }
- d = p = ssl_handshake_start(s);
-
#ifndef OPENSSL_NO_PSK
if (type & SSL_PSK) {
- /* copy PSK identity hint */
- if (s->cert->psk_identity_hint) {
- size_t len = strlen(s->cert->psk_identity_hint);
- if (len > PSK_MAX_IDENTITY_LEN) {
- /*
- * Should not happen - we already checked this when we set
- * the identity hint
- */
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
- s2n(len, p);
- memcpy(p, s->cert->psk_identity_hint, len);
- p += len;
- } else {
- s2n(0, p);
+ size_t len = (s->cert->psk_identity_hint == NULL)
+ ? 0 : strlen(s->cert->psk_identity_hint);
+
+ /*
+ * It should not happen that len > PSK_MAX_IDENTITY_LEN - we already
+ * checked this when we set the identity hint - but just in case
+ */
+ if (len > PSK_MAX_IDENTITY_LEN
+ || !WPACKET_sub_memcpy_u16(pkt, s->cert->psk_identity_hint,
+ len)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto f_err;
}
}
#endif
for (i = 0; i < 4 && r[i] != NULL; i++) {
+ unsigned char *binval;
+ int res;
+
#ifndef OPENSSL_NO_SRP
if ((i == 2) && (type & SSL_kSRP)) {
- *p = nr[i];
- p++;
+ res = WPACKET_start_sub_packet_u8(pkt);
} else
#endif
+ res = WPACKET_start_sub_packet_u16(pkt);
+
+ if (!res) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
+
#ifndef OPENSSL_NO_DH
/*-
* for interoperability with some versions of the Microsoft TLS
* as the prime
*/
if ((i == 2) && (type & (SSL_kDHE | SSL_kDHEPSK))) {
- s2n(nr[0], p);
- for (j = 0; j < (nr[0] - nr[2]); ++j) {
- *p = 0;
- ++p;
+ size_t len = BN_num_bytes(r[0]) - BN_num_bytes(r[2]);
+
+ if (len > 0) {
+ if (!WPACKET_allocate_bytes(pkt, len, &binval)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
+ memset(binval, 0, len);
}
- } else
+ }
#endif
- s2n(nr[i], p);
- BN_bn2bin(r[i], p);
- p += nr[i];
+ if (!WPACKET_allocate_bytes(pkt, BN_num_bytes(r[i]), &binval)
+ || !WPACKET_close(pkt)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
+
+ BN_bn2bin(r[i], binval);
}
#ifndef OPENSSL_NO_EC
if (type & (SSL_kECDHE | SSL_kECDHEPSK)) {
/*
- * XXX: For now, we only support named (not generic) curves. In
- * this situation, the serverKeyExchange message has: [1 byte
- * CurveType], [2 byte CurveName] [1 byte length of encoded
- * point], followed by the actual encoded point itself
+ * We only support named (not generic) curves. In this situation, the
+ * ServerKeyExchange message has: [1 byte CurveType], [2 byte CurveName]
+ * [1 byte length of encoded point], followed by the actual encoded
+ * point itself
*/
- *p = NAMED_CURVE_TYPE;
- p += 1;
- *p = 0;
- p += 1;
- *p = curve_id;
- p += 1;
- *p = encodedlen;
- p += 1;
- memcpy(p, encodedPoint, encodedlen);
+ if (!WPACKET_put_bytes_u8(pkt, NAMED_CURVE_TYPE)
+ || !WPACKET_put_bytes_u8(pkt, 0)
+ || !WPACKET_put_bytes_u8(pkt, curve_id)
+ || !WPACKET_sub_memcpy_u8(pkt, encodedPoint, encodedlen)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
OPENSSL_free(encodedPoint);
encodedPoint = NULL;
- p += encodedlen;
}
#endif
* points to the space at the end.
*/
if (md) {
+ unsigned char *sigbytes1, *sigbytes2;
+ unsigned int siglen;
+
+ /* Get length of the parameters we have written above */
+ if (!WPACKET_get_length(pkt, ¶mlen)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
/* send signature algorithm */
if (SSL_USE_SIGALGS(s)) {
- if (!tls12_get_sigandhash_old(p, pkey, md)) {
+ if (!tls12_get_sigandhash(pkt, pkey, md)) {
/* Should never happen */
- al = SSL_AD_INTERNAL_ERROR;
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
ERR_R_INTERNAL_ERROR);
goto f_err;
}
- p += 2;
}
#ifdef SSL_DEBUG
fprintf(stderr, "Using hash %s\n", EVP_MD_name(md));
#endif
- if (EVP_SignInit_ex(md_ctx, md, NULL) <= 0
- || EVP_SignUpdate(md_ctx, &(s->s3->client_random[0]),
- SSL3_RANDOM_SIZE) <= 0
- || EVP_SignUpdate(md_ctx, &(s->s3->server_random[0]),
- SSL3_RANDOM_SIZE) <= 0
- || EVP_SignUpdate(md_ctx, d, n) <= 0
- || EVP_SignFinal(md_ctx, &(p[2]),
- (unsigned int *)&i, pkey) <= 0) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE, ERR_LIB_EVP);
- al = SSL_AD_INTERNAL_ERROR;
+ /*
+ * Create the signature. We don't know the actual length of the sig
+ * until after we've created it, so we reserve enough bytes for it
+ * up front, and then properly allocate them in the WPACKET
+ * afterwards.
+ */
+ if (!WPACKET_sub_reserve_bytes_u16(pkt, EVP_PKEY_size(pkey),
+ &sigbytes1)
+ || EVP_SignInit_ex(md_ctx, md, NULL) <= 0
+ || EVP_SignUpdate(md_ctx, &(s->s3->client_random[0]),
+ SSL3_RANDOM_SIZE) <= 0
+ || EVP_SignUpdate(md_ctx, &(s->s3->server_random[0]),
+ SSL3_RANDOM_SIZE) <= 0
+ || EVP_SignUpdate(md_ctx, s->init_buf->data + paramoffset,
+ paramlen) <= 0
+ || EVP_SignFinal(md_ctx, sigbytes1, &siglen, pkey) <= 0
+ || !WPACKET_sub_allocate_bytes_u16(pkt, siglen, &sigbytes2)
+ || sigbytes1 != sigbytes2) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
goto f_err;
}
- s2n(i, p);
- n += i + 2;
- if (SSL_USE_SIGALGS(s))
- n += 2;
} else {
/* Is this error check actually needed? */
al = SSL_AD_HANDSHAKE_FAILURE;
}
}
- if (!ssl_set_handshake_header(s, SSL3_MT_SERVER_KEY_EXCHANGE, n)) {
- al = SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
- goto f_err;
- }
-
EVP_MD_CTX_free(md_ctx);
return 1;
f_err:
OPENSSL_free(encodedPoint);
#endif
EVP_MD_CTX_free(md_ctx);
- ossl_statem_set_error(s);
return 0;
}
-int tls_construct_certificate_request(SSL *s)
+int tls_construct_certificate_request(SSL *s, WPACKET *pkt)
{
int i, nl;
STACK_OF(X509_NAME) *sk = NULL;
- WPACKET pkt;
-
- if (!WPACKET_init(&pkt, s->init_buf)
- || !ssl_set_handshake_header2(s, &pkt,
- SSL3_MT_CERTIFICATE_REQUEST)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_CERTIFICATE_REQUEST, ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
/* get the list of acceptable cert types */
- if (!WPACKET_start_sub_packet_u8(&pkt)
- || !ssl3_get_req_cert_type(s, &pkt)
- || !WPACKET_close(&pkt)) {
+ if (!WPACKET_start_sub_packet_u8(pkt)
+ || !ssl3_get_req_cert_type(s, pkt)
+ || !WPACKET_close(pkt)) {
SSLerr(SSL_F_TLS_CONSTRUCT_CERTIFICATE_REQUEST, ERR_R_INTERNAL_ERROR);
goto err;
}
if (SSL_USE_SIGALGS(s)) {
const unsigned char *psigs;
nl = tls12_get_psigalgs(s, &psigs);
- if (!WPACKET_start_sub_packet_u16(&pkt)
- || !tls12_copy_sigalgs(s, &pkt, psigs, nl)
- || !WPACKET_close(&pkt)) {
+ if (!WPACKET_start_sub_packet_u16(pkt)
+ || !tls12_copy_sigalgs(s, pkt, psigs, nl)
+ || !WPACKET_close(pkt)) {
SSLerr(SSL_F_TLS_CONSTRUCT_CERTIFICATE_REQUEST,
ERR_R_INTERNAL_ERROR);
goto err;
}
/* Start sub-packet for client CA list */
- if (!WPACKET_start_sub_packet_u16(&pkt)) {
+ if (!WPACKET_start_sub_packet_u16(pkt)) {
SSLerr(SSL_F_TLS_CONSTRUCT_CERTIFICATE_REQUEST, ERR_R_INTERNAL_ERROR);
goto err;
}
if (name == NULL
|| (namelen = i2d_X509_NAME(name, NULL)) < 0
- || !WPACKET_sub_allocate_bytes_u16(&pkt, namelen,
+ || !WPACKET_sub_allocate_bytes_u16(pkt, namelen,
&namebytes)
|| i2d_X509_NAME(name, &namebytes) != namelen) {
SSLerr(SSL_F_TLS_CONSTRUCT_CERTIFICATE_REQUEST,
}
/* else no CA names */
- if (!WPACKET_close(&pkt)
- || !ssl_close_construct_packet(s, &pkt)) {
+ if (!WPACKET_close(pkt)) {
SSLerr(SSL_F_TLS_CONSTRUCT_CERTIFICATE_REQUEST, ERR_R_INTERNAL_ERROR);
goto err;
}
return 1;
err:
- WPACKET_cleanup(&pkt);
ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
- ossl_statem_set_error(s);
return 0;
}
return ret;
}
-int tls_construct_server_certificate(SSL *s)
+int tls_construct_server_certificate(SSL *s, WPACKET *pkt)
{
CERT_PKEY *cpk;
cpk = ssl_get_server_send_pkey(s);
if (cpk == NULL) {
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_CERTIFICATE, ERR_R_INTERNAL_ERROR);
- ossl_statem_set_error(s);
return 0;
}
- if (!ssl3_output_cert_chain(s, cpk)) {
+ if (!ssl3_output_cert_chain(s, pkt, cpk)) {
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_CERTIFICATE, ERR_R_INTERNAL_ERROR);
- ossl_statem_set_error(s);
return 0;
}
return 1;
}
-int tls_construct_new_session_ticket(SSL *s)
+int tls_construct_new_session_ticket(SSL *s, WPACKET *pkt)
{
unsigned char *senc = NULL;
- EVP_CIPHER_CTX *ctx;
+ EVP_CIPHER_CTX *ctx = NULL;
HMAC_CTX *hctx = NULL;
- unsigned char *p, *macstart;
+ unsigned char *p, *encdata1, *encdata2, *macdata1, *macdata2;
const unsigned char *const_p;
- int len, slen_full, slen;
+ int len, slen_full, slen, lenfinal;
SSL_SESSION *sess;
unsigned int hlen;
SSL_CTX *tctx = s->initial_ctx;
unsigned char iv[EVP_MAX_IV_LENGTH];
unsigned char key_name[TLSEXT_KEYNAME_LENGTH];
int iv_len;
+ size_t macoffset, macendoffset;
/* get session encoding length */
slen_full = i2d_SSL_SESSION(s->session, NULL);
ctx = EVP_CIPHER_CTX_new();
hctx = HMAC_CTX_new();
+ if (ctx == NULL || hctx == NULL) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_NEW_SESSION_TICKET, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
p = senc;
if (!i2d_SSL_SESSION(s->session, &p))
}
SSL_SESSION_free(sess);
- /*-
- * Grow buffer if need be: the length calculation is as
- * follows handshake_header_length +
- * 4 (ticket lifetime hint) + 2 (ticket length) +
- * sizeof(keyname) + max_iv_len (iv length) +
- * max_enc_block_size (max encrypted session * length) +
- * max_md_size (HMAC) + session_length.
- */
- if (!BUF_MEM_grow(s->init_buf,
- SSL_HM_HEADER_LENGTH(s) + 6 + sizeof(key_name) +
- EVP_MAX_IV_LENGTH + EVP_MAX_BLOCK_LENGTH +
- EVP_MAX_MD_SIZE + slen))
- goto err;
-
- p = ssl_handshake_start(s);
/*
* Initialize HMAC and cipher contexts. If callback present it does
* all the work otherwise use generated values from parent ctx.
hctx, 1);
if (ret == 0) {
- l2n(0, p); /* timeout */
- s2n(0, p); /* length */
- if (!ssl_set_handshake_header
- (s, SSL3_MT_NEWSESSION_TICKET, p - ssl_handshake_start(s)))
+
+ /* Put timeout and length */
+ if (!WPACKET_put_bytes_u32(pkt, 0)
+ || !WPACKET_put_bytes_u16(pkt, 0)
+ || !ssl_close_construct_packet(s, pkt)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_NEW_SESSION_TICKET,
+ ERR_R_INTERNAL_ERROR);
goto err;
+ }
OPENSSL_free(senc);
EVP_CIPHER_CTX_free(ctx);
HMAC_CTX_free(hctx);
* for resumed session (for simplicity), and guess that tickets for
* new sessions will live as long as their sessions.
*/
- l2n(s->hit ? 0 : s->session->timeout, p);
-
- /* Skip ticket length for now */
- p += 2;
- /* Output key name */
- macstart = p;
- memcpy(p, key_name, sizeof(key_name));
- p += sizeof(key_name);
- /* output IV */
- memcpy(p, iv, iv_len);
- p += iv_len;
- /* Encrypt session data */
- if (!EVP_EncryptUpdate(ctx, p, &len, senc, slen))
- goto err;
- p += len;
- if (!EVP_EncryptFinal(ctx, p, &len))
+ if (!WPACKET_put_bytes_u32(pkt, s->hit ? 0 : s->session->timeout)
+ /* Now the actual ticket data */
+ || !WPACKET_start_sub_packet_u16(pkt)
+ || !WPACKET_get_total_written(pkt, &macoffset)
+ /* Output key name */
+ || !WPACKET_memcpy(pkt, key_name, sizeof(key_name))
+ /* output IV */
+ || !WPACKET_memcpy(pkt, iv, iv_len)
+ || !WPACKET_reserve_bytes(pkt, slen + EVP_MAX_BLOCK_LENGTH,
+ &encdata1)
+ /* Encrypt session data */
+ || !EVP_EncryptUpdate(ctx, encdata1, &len, senc, slen)
+ || !WPACKET_allocate_bytes(pkt, len, &encdata2)
+ || encdata1 != encdata2
+ || !EVP_EncryptFinal(ctx, encdata1 + len, &lenfinal)
+ || !WPACKET_allocate_bytes(pkt, lenfinal, &encdata2)
+ || encdata1 + len != encdata2
+ || len + lenfinal > slen + EVP_MAX_BLOCK_LENGTH
+ || !WPACKET_get_total_written(pkt, &macendoffset)
+ || !HMAC_Update(hctx,
+ (unsigned char *)s->init_buf->data + macoffset,
+ macendoffset - macoffset)
+ || !WPACKET_reserve_bytes(pkt, EVP_MAX_MD_SIZE, &macdata1)
+ || !HMAC_Final(hctx, macdata1, &hlen)
+ || hlen > EVP_MAX_MD_SIZE
+ || !WPACKET_allocate_bytes(pkt, hlen, &macdata2)
+ || macdata1 != macdata2
+ || !WPACKET_close(pkt)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_NEW_SESSION_TICKET, ERR_R_INTERNAL_ERROR);
goto err;
- p += len;
-
- if (!HMAC_Update(hctx, macstart, p - macstart))
- goto err;
- if (!HMAC_Final(hctx, p, &hlen))
- goto err;
-
+ }
EVP_CIPHER_CTX_free(ctx);
HMAC_CTX_free(hctx);
- ctx = NULL;
- hctx = NULL;
-
- p += hlen;
- /* Now write out lengths: p points to end of data written */
- /* Total length */
- len = p - ssl_handshake_start(s);
- /* Skip ticket lifetime hint */
- p = ssl_handshake_start(s) + 4;
- s2n(len - 6, p);
- if (!ssl_set_handshake_header(s, SSL3_MT_NEWSESSION_TICKET, len))
- goto err;
OPENSSL_free(senc);
return 1;
OPENSSL_free(senc);
EVP_CIPHER_CTX_free(ctx);
HMAC_CTX_free(hctx);
- ossl_statem_set_error(s);
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return 0;
}
-int tls_construct_cert_status(SSL *s)
+int tls_construct_cert_status(SSL *s, WPACKET *pkt)
{
- unsigned char *p;
- size_t msglen;
-
- /*-
- * Grow buffer if need be: the length calculation is as
- * follows handshake_header_length +
- * 1 (ocsp response type) + 3 (ocsp response length)
- * + (ocsp response)
- */
- msglen = 4 + s->tlsext_ocsp_resplen;
- if (!BUF_MEM_grow(s->init_buf, SSL_HM_HEADER_LENGTH(s) + msglen))
- goto err;
-
- p = ssl_handshake_start(s);
-
- /* status type */
- *(p++) = s->tlsext_status_type;
- /* length of OCSP response */
- l2n3(s->tlsext_ocsp_resplen, p);
- /* actual response */
- memcpy(p, s->tlsext_ocsp_resp, s->tlsext_ocsp_resplen);
-
- if (!ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE_STATUS, msglen))
- goto err;
+ if (!WPACKET_put_bytes_u8(pkt, s->tlsext_status_type)
+ || !WPACKET_sub_memcpy_u24(pkt, s->tlsext_ocsp_resp,
+ s->tlsext_ocsp_resplen)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CERT_STATUS, ERR_R_INTERNAL_ERROR);
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ return 0;
+ }
return 1;
-
- err:
- ossl_statem_set_error(s);
- return 0;
}
#ifndef OPENSSL_NO_NEXTPROTONEG
projects / openssl.git / blobdiff