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Squash together states in the TLS 1.2 server Certificate flight.

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We've got an asynchronous ServerKeyExchange state in the middle that
complicates things a bit, but this is still a little tighter.

BUG=128

Change-Id: I4ee2e3b85e677c9555d2fbddd387c12d41ab2b54
Reviewed-on: https://boringssl-review.googlesource.com/17250
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
This commit is contained in:
David Benjamin 2017-06-15 23:24:25 -04:00 committed by CQ bot account: commit-bot@chromium.org
parent b5f55c3afb
commit 0d1730ddf1
3 changed files with 37 additions and 78 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/openssl/ssl3.h
View File

@ -345,7 +345,6 @@ OPENSSL_COMPILE_ASSERT(
#define SSL3_ST_SW_CERT_A (0x140 | SSL_ST_ACCEPT)
#define SSL3_ST_SW_KEY_EXCH_A (0x150 | SSL_ST_ACCEPT)
#define SSL3_ST_SW_KEY_EXCH_B (0x151 | SSL_ST_ACCEPT)
#define SSL3_ST_SW_CERT_REQ_A (0x160 | SSL_ST_ACCEPT)
#define SSL3_ST_SW_SRVR_DONE_A (0x170 | SSL_ST_ACCEPT)
/* read from client */
#define SSL3_ST_SR_CERT_A (0x180 | SSL_ST_ACCEPT)
@ -359,7 +358,6 @@ OPENSSL_COMPILE_ASSERT(
/* write to client */
#define SSL3_ST_SW_FINISHED_A (0x1E0 | SSL_ST_ACCEPT)
#define SSL3_ST_SW_CERT_STATUS_A (0x200 | SSL_ST_ACCEPT)
#define SSL3_MT_HELLO_REQUEST 0
#define SSL3_MT_CLIENT_HELLO 1

107
ssl/handshake_server.c
View File

@ -175,9 +175,7 @@ static int ssl3_select_certificate(SSL_HANDSHAKE *hs);
static int ssl3_select_parameters(SSL_HANDSHAKE *hs);
static int ssl3_send_server_hello(SSL_HANDSHAKE *hs);
static int ssl3_send_server_certificate(SSL_HANDSHAKE *hs);
static int ssl3_send_certificate_status(SSL_HANDSHAKE *hs);
static int ssl3_send_server_key_exchange(SSL_HANDSHAKE *hs);
static int ssl3_send_certificate_request(SSL_HANDSHAKE *hs);
static int ssl3_send_server_hello_done(SSL_HANDSHAKE *hs);
static int ssl3_get_client_certificate(SSL_HANDSHAKE *hs);
static int ssl3_get_client_key_exchange(SSL_HANDSHAKE *hs);
@ -262,21 +260,9 @@ int ssl3_accept(SSL_HANDSHAKE *hs) {
break;
case SSL3_ST_SW_CERT_A:
if (ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
ret = ssl3_send_server_certificate(hs);
if (ret <= 0) {
goto end;
}
}
hs->state = SSL3_ST_SW_CERT_STATUS_A;
break;
case SSL3_ST_SW_CERT_STATUS_A:
if (hs->certificate_status_expected) {
ret = ssl3_send_certificate_status(hs);
if (ret <= 0) {
goto end;
}
ret = ssl3_send_server_certificate(hs);
if (ret <= 0) {
goto end;
}
hs->state = SSL3_ST_SW_KEY_EXCH_A;
break;
@ -294,16 +280,6 @@ int ssl3_accept(SSL_HANDSHAKE *hs) {
}
}
hs->state = SSL3_ST_SW_CERT_REQ_A;
break;
case SSL3_ST_SW_CERT_REQ_A:
if (hs->cert_request) {
ret = ssl3_send_certificate_request(hs);
if (ret <= 0) {
goto end;
}
}
hs->state = SSL3_ST_SW_SRVR_DONE_A;
break;
@ -1071,6 +1047,10 @@ static int ssl3_send_server_hello(SSL_HANDSHAKE *hs) {
static int ssl3_send_server_certificate(SSL_HANDSHAKE *hs) {
SSL *const ssl = hs->ssl;
if (!ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
return 1;
}
if (!ssl_has_certificate(ssl)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CERTIFICATE_SET);
return -1;
@ -1079,23 +1059,21 @@ static int ssl3_send_server_certificate(SSL_HANDSHAKE *hs) {
if (!ssl3_output_cert_chain(ssl)) {
return -1;
}
return 1;
}
static int ssl3_send_certificate_status(SSL_HANDSHAKE *hs) {
SSL *const ssl = hs->ssl;
CBB cbb, body, ocsp_response;
if (!ssl->method->init_message(ssl, &cbb, &body,
SSL3_MT_CERTIFICATE_STATUS) ||
!CBB_add_u8(&body, TLSEXT_STATUSTYPE_ocsp) ||
!CBB_add_u24_length_prefixed(&body, &ocsp_response) ||
!CBB_add_bytes(&ocsp_response,
CRYPTO_BUFFER_data(ssl->cert->ocsp_response),
CRYPTO_BUFFER_len(ssl->cert->ocsp_response)) ||
!ssl_add_message_cbb(ssl, &cbb)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
CBB_cleanup(&cbb);
return -1;
if (hs->certificate_status_expected) {
CBB cbb, body, ocsp_response;
if (!ssl->method->init_message(ssl, &cbb, &body,
SSL3_MT_CERTIFICATE_STATUS) ||
!CBB_add_u8(&body, TLSEXT_STATUSTYPE_ocsp) ||
!CBB_add_u24_length_prefixed(&body, &ocsp_response) ||
!CBB_add_bytes(&ocsp_response,
CRYPTO_BUFFER_data(ssl->cert->ocsp_response),
CRYPTO_BUFFER_len(ssl->cert->ocsp_response)) ||
!ssl_add_message_cbb(ssl, &cbb)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
CBB_cleanup(&cbb);
return -1;
}
}
return 1;
@ -1250,26 +1228,28 @@ err:
return -1;
}
static int ssl3_send_certificate_request(SSL_HANDSHAKE *hs) {
static int ssl3_send_server_hello_done(SSL_HANDSHAKE *hs) {
SSL *const ssl = hs->ssl;
CBB cbb, body, cert_types, sigalgs_cbb;
if (!ssl->method->init_message(ssl, &cbb, &body,
SSL3_MT_CERTIFICATE_REQUEST) ||
!CBB_add_u8_length_prefixed(&body, &cert_types) ||
!CBB_add_u8(&cert_types, SSL3_CT_RSA_SIGN) ||
(ssl->version >= TLS1_VERSION &&
!CBB_add_u8(&cert_types, TLS_CT_ECDSA_SIGN))) {
goto err;
}
CBB cbb, body;
if (ssl3_protocol_version(ssl) >= TLS1_2_VERSION) {
if (!CBB_add_u16_length_prefixed(&body, &sigalgs_cbb) ||
!tls12_add_verify_sigalgs(ssl, &sigalgs_cbb)) {
if (hs->cert_request) {
CBB cert_types, sigalgs_cbb;
if (!ssl->method->init_message(ssl, &cbb, &body,
SSL3_MT_CERTIFICATE_REQUEST) ||
!CBB_add_u8_length_prefixed(&body, &cert_types) ||
!CBB_add_u8(&cert_types, SSL3_CT_RSA_SIGN) ||
(ssl3_protocol_version(ssl) >= TLS1_VERSION &&
!CBB_add_u8(&cert_types, TLS_CT_ECDSA_SIGN)) ||
(ssl3_protocol_version(ssl) >= TLS1_2_VERSION &&
(!CBB_add_u16_length_prefixed(&body, &sigalgs_cbb) ||
!tls12_add_verify_sigalgs(ssl, &sigalgs_cbb))) ||
!ssl_add_client_CA_list(ssl, &body) ||
!ssl_add_message_cbb(ssl, &cbb)) {
goto err;
}
}
if (!ssl_add_client_CA_list(ssl, &body) ||
if (!ssl->method->init_message(ssl, &cbb, &body, SSL3_MT_SERVER_HELLO_DONE) ||
!ssl_add_message_cbb(ssl, &cbb)) {
goto err;
}
@ -1282,19 +1262,6 @@ err:
return -1;
}
static int ssl3_send_server_hello_done(SSL_HANDSHAKE *hs) {
SSL *const ssl = hs->ssl;
CBB cbb, body;
if (!ssl->method->init_message(ssl, &cbb, &body, SSL3_MT_SERVER_HELLO_DONE) ||
!ssl_add_message_cbb(ssl, &cbb)) {
OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
CBB_cleanup(&cbb);
return -1;
}
return 1;
}
static int ssl3_get_client_certificate(SSL_HANDSHAKE *hs) {
SSL *const ssl = hs->ssl;
assert(hs->cert_request);

6
ssl/ssl_stat.c
View File

@ -182,9 +182,6 @@ const char *SSL_state_string_long(const SSL *ssl) {
case SSL3_ST_SW_KEY_EXCH_A:
return "SSLv3 write key exchange A";
case SSL3_ST_SW_CERT_REQ_A:
return "SSLv3 write certificate request A";
case SSL3_ST_SW_SRVR_DONE_A:
return "SSLv3 write server done A";
@ -291,9 +288,6 @@ const char *SSL_state_string(const SSL *ssl) {
case SSL3_ST_SW_KEY_EXCH_B:
return "3WSKEB";
case SSL3_ST_SW_CERT_REQ_A:
return "3WCR_A";
case SSL3_ST_SW_SRVR_DONE_A:
return "3WSD_A";