# include <openssl/safestack.h>
# include <openssl/symhacks.h>
+# ifndef OPENSSL_NO_CT
+# include <openssl/ct.h>
+# endif
#ifdef __cplusplus
extern "C" {
/* Register callbacks to handle custom TLS Extensions for client or server. */
+__owur int SSL_CTX_has_client_custom_ext(const SSL_CTX *ctx,
+ unsigned int ext_type);
+
__owur int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
custom_ext_add_cb add_cb,
custom_ext_free_cb free_cb,
int DTLSv1_listen(SSL *s, BIO_ADDR *client);
+# ifndef OPENSSL_NO_CT
+
+/*
+ * Sets a |callback| that is invoked upon receipt of ServerHelloDone to validate
+ * the received SCTs.
+ * If the callback returns a non-positive result, the connection is terminated.
+ * Call this function before beginning a handshake.
+ * If a NULL |callback| is provided, SCT validation is disabled.
+ * |arg| is arbitrary userdata that will be passed to the callback whenever it
+ * is invoked. Ownership of |arg| remains with the caller.
+ *
+ * NOTE: A side-effect of setting a CT callback is that an OCSP stapled response
+ * will be requested.
+ */
+__owur int SSL_set_ct_validation_callback(SSL *s,
+ ct_validation_cb callback,
+ void *arg);
+__owur int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
+ ct_validation_cb callback,
+ void *arg);
+/*
+ * Gets the callback being used to validate SCTs.
+ * This will return NULL if SCTs are neither being requested nor validated.
+ */
+__owur ct_validation_cb SSL_get_ct_validation_callback(const SSL *s);
+__owur ct_validation_cb SSL_CTX_get_ct_validation_callback(const SSL_CTX *ctx);
+
+/* Gets the SCTs received from a connection */
+const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s);
+
+/* Load the CT log list from the default location */
+int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx);
+/* Load the CT log list from the specified file path */
+int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path);
+
+# endif /* OPENSSL_NO_CT */
+
/* What the "other" parameter contains in security callback */
/* Mask for type */
# define SSL_SECOP_OTHER_TYPE 0xffff0000
/* Function codes. */
# define SSL_F_CHECK_SUITEB_CIPHER_LIST 331
+# define SSL_F_CT_MOVE_SCTS 345
# define SSL_F_D2I_SSL_SESSION 103
# define SSL_F_DANE_CTX_ENABLE 347
# define SSL_F_DANE_MTYPE_SET 393
# define SSL_F_SSL_CREATE_CIPHER_LIST 166
# define SSL_F_SSL_CTRL 232
# define SSL_F_SSL_CTX_CHECK_PRIVATE_KEY 168
+# define SSL_F_SSL_CTX_GET_CT_VALIDATION_CALLBACK 349
# define SSL_F_SSL_CTX_MAKE_PROFILES 309
# define SSL_F_SSL_CTX_NEW 169
# define SSL_F_SSL_CTX_SET_ALPN_PROTOS 343
# define SSL_F_SSL_CTX_SET_CIPHER_LIST 269
# define SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE 290
+# define SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK 396
# define SSL_F_SSL_CTX_SET_PURPOSE 226
# define SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT 219
# define SSL_F_SSL_CTX_SET_SSL_VERSION 170
# define SSL_F_SSL_DANE_ENABLE 395
# define SSL_F_SSL_DO_CONFIG 391
# define SSL_F_SSL_DO_HANDSHAKE 180
+# define SSL_F_SSL_GET0_PEER_SCTS 397
+# define SSL_F_SSL_GET_CT_VALIDATION_CALLBACK 398
# define SSL_F_SSL_GET_NEW_SESSION 181
# define SSL_F_SSL_GET_PREV_SESSION 217
# define SSL_F_SSL_GET_SERVER_CERT_INDEX 322
# define SSL_F_SSL_SET_ALPN_PROTOS 344
# define SSL_F_SSL_SET_CERT 191
# define SSL_F_SSL_SET_CIPHER_LIST 271
+# define SSL_F_SSL_SET_CT_VALIDATION_CALLBACK 399
# define SSL_F_SSL_SET_FD 192
# define SSL_F_SSL_SET_PKEY 193
# define SSL_F_SSL_SET_PURPOSE 227
# define SSL_F_SSL_USE_RSAPRIVATEKEY 204
# define SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1 205
# define SSL_F_SSL_USE_RSAPRIVATEKEY_FILE 206
+# define SSL_F_SSL_VALIDATE_CT 400
# define SSL_F_SSL_VERIFY_CERT_CHAIN 207
# define SSL_F_SSL_WRITE 208
# define SSL_F_STATE_MACHINE 353
# define SSL_R_CONTEXT_NOT_DANE_ENABLED 167
# define SSL_R_COOKIE_GEN_CALLBACK_FAILURE 400
# define SSL_R_COOKIE_MISMATCH 308
+# define SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED 206
# define SSL_R_DANE_ALREADY_ENABLED 172
# define SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL 173
# define SSL_R_DANE_NOT_ENABLED 175
# define SSL_R_REQUIRED_CIPHER_MISSING 215
# define SSL_R_REQUIRED_COMPRESSSION_ALGORITHM_MISSING 342
# define SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING 345
+# define SSL_R_SCT_VERIFICATION_FAILED 208
# define SSL_R_SERVERHELLO_TLSEXT 275
# define SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED 277
+# define SSL_R_SET_FAILED 209
# define SSL_R_SHUTDOWN_WHILE_IN_INIT 407
# define SSL_R_SIGNATURE_ALGORITHMS_ERROR 360
# define SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE 220
/* ExtensionType value from RFC7301 */
# define TLSEXT_TYPE_application_layer_protocol_negotiation 16
+/*
+ * Extension type for Certificate Transparency
+ * https://tools.ietf.org/html/rfc6962#section-3.3.1
+ */
+# define TLSEXT_TYPE_signed_certificate_timestamp 18
+
/*
* ExtensionType value for TLS padding extension.
* http://tools.ietf.org/html/draft-agl-tls-padding
static ERR_STRING_DATA SSL_str_functs[] = {
{ERR_FUNC(SSL_F_CHECK_SUITEB_CIPHER_LIST), "check_suiteb_cipher_list"},
+ {ERR_FUNC(SSL_F_CT_MOVE_SCTS), "CT_move_scts"},
{ERR_FUNC(SSL_F_D2I_SSL_SESSION), "d2i_SSL_SESSION"},
{ERR_FUNC(SSL_F_DANE_CTX_ENABLE), "dane_ctx_enable"},
{ERR_FUNC(SSL_F_DANE_MTYPE_SET), "dane_mtype_set"},
{ERR_FUNC(SSL_F_SSL_CREATE_CIPHER_LIST), "ssl_create_cipher_list"},
{ERR_FUNC(SSL_F_SSL_CTRL), "SSL_ctrl"},
{ERR_FUNC(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY), "SSL_CTX_check_private_key"},
+ {ERR_FUNC(SSL_F_SSL_CTX_GET_CT_VALIDATION_CALLBACK),
+ "SSL_CTX_get_ct_validation_callback"},
{ERR_FUNC(SSL_F_SSL_CTX_MAKE_PROFILES), "ssl_ctx_make_profiles"},
{ERR_FUNC(SSL_F_SSL_CTX_NEW), "SSL_CTX_new"},
{ERR_FUNC(SSL_F_SSL_CTX_SET_ALPN_PROTOS), "SSL_CTX_set_alpn_protos"},
{ERR_FUNC(SSL_F_SSL_CTX_SET_CIPHER_LIST), "SSL_CTX_set_cipher_list"},
{ERR_FUNC(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE),
"SSL_CTX_set_client_cert_engine"},
+ {ERR_FUNC(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK),
+ "SSL_CTX_set_ct_validation_callback"},
{ERR_FUNC(SSL_F_SSL_CTX_SET_PURPOSE), "SSL_CTX_set_purpose"},
{ERR_FUNC(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT),
"SSL_CTX_set_session_id_context"},
{ERR_FUNC(SSL_F_SSL_DANE_ENABLE), "SSL_dane_enable"},
{ERR_FUNC(SSL_F_SSL_DO_CONFIG), "ssl_do_config"},
{ERR_FUNC(SSL_F_SSL_DO_HANDSHAKE), "SSL_do_handshake"},
+ {ERR_FUNC(SSL_F_SSL_GET0_PEER_SCTS), "SSL_get0_peer_scts"},
+ {ERR_FUNC(SSL_F_SSL_GET_CT_VALIDATION_CALLBACK),
+ "SSL_get_ct_validation_callback"},
{ERR_FUNC(SSL_F_SSL_GET_NEW_SESSION), "ssl_get_new_session"},
{ERR_FUNC(SSL_F_SSL_GET_PREV_SESSION), "ssl_get_prev_session"},
{ERR_FUNC(SSL_F_SSL_GET_SERVER_CERT_INDEX), "ssl_get_server_cert_index"},
{ERR_FUNC(SSL_F_SSL_SET_ALPN_PROTOS), "SSL_set_alpn_protos"},
{ERR_FUNC(SSL_F_SSL_SET_CERT), "ssl_set_cert"},
{ERR_FUNC(SSL_F_SSL_SET_CIPHER_LIST), "SSL_set_cipher_list"},
+ {ERR_FUNC(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK),
+ "SSL_set_ct_validation_callback"},
{ERR_FUNC(SSL_F_SSL_SET_FD), "SSL_set_fd"},
{ERR_FUNC(SSL_F_SSL_SET_PKEY), "ssl_set_pkey"},
{ERR_FUNC(SSL_F_SSL_SET_PURPOSE), "SSL_set_purpose"},
{ERR_FUNC(SSL_F_SSL_USE_RSAPRIVATEKEY), "SSL_use_RSAPrivateKey"},
{ERR_FUNC(SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1), "SSL_use_RSAPrivateKey_ASN1"},
{ERR_FUNC(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE), "SSL_use_RSAPrivateKey_file"},
+ {ERR_FUNC(SSL_F_SSL_VALIDATE_CT), "SSL_validate_ct"},
{ERR_FUNC(SSL_F_SSL_VERIFY_CERT_CHAIN), "ssl_verify_cert_chain"},
{ERR_FUNC(SSL_F_SSL_WRITE), "SSL_write"},
{ERR_FUNC(SSL_F_STATE_MACHINE), "state_machine"},
{ERR_REASON(SSL_R_COOKIE_GEN_CALLBACK_FAILURE),
"cookie gen callback failure"},
{ERR_REASON(SSL_R_COOKIE_MISMATCH), "cookie mismatch"},
+ {ERR_REASON(SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED),
+ "custom ext handler already installed"},
{ERR_REASON(SSL_R_DANE_ALREADY_ENABLED), "dane already enabled"},
{ERR_REASON(SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL),
"dane cannot override mtype full"},
"required compresssion algorithm missing"},
{ERR_REASON(SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING),
"scsv received when renegotiating"},
+ {ERR_REASON(SSL_R_SCT_VERIFICATION_FAILED), "sct verification failed"},
{ERR_REASON(SSL_R_SERVERHELLO_TLSEXT), "serverhello tlsext"},
{ERR_REASON(SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED),
"session id context uninitialized"},
+ {ERR_REASON(SSL_R_SET_FAILED), "set failed"},
{ERR_REASON(SSL_R_SHUTDOWN_WHILE_IN_INIT), "shutdown while in init"},
{ERR_REASON(SSL_R_SIGNATURE_ALGORITHMS_ERROR),
"signature algorithms error"},
# include <openssl/engine.h>
#endif
#include <openssl/async.h>
+#ifndef OPENSSL_NO_CT
+# include <openssl/ct.h>
+#endif
const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
s->job = NULL;
+#ifndef OPENSSL_NO_CT
+ if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
+ ctx->ct_validation_callback_arg))
+ goto err;
+#endif
+
return (s);
err:
SSL_free(s);
#endif /* OPENSSL_NO_EC */
sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
+#ifndef OPENSSL_NO_CT
+ SCT_LIST_free(s->scts);
+ OPENSSL_free(s->tlsext_scts);
+#endif
OPENSSL_free(s->tlsext_ocsp_resp);
OPENSSL_free(s->alpn_client_proto_list);
ret->cert_store = X509_STORE_new();
if (ret->cert_store == NULL)
goto err;
-
+#ifndef OPENSSL_NO_CT
+ ret->ctlog_store = CTLOG_STORE_new();
+ if (ret->ctlog_store == NULL)
+ goto err;
+#endif
if (!ssl_create_cipher_list(ret->method,
&ret->cipher_list, &ret->cipher_list_by_id,
SSL_DEFAULT_CIPHER_LIST, ret->cert)
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
lh_SSL_SESSION_free(a->sessions);
X509_STORE_free(a->cert_store);
+#ifndef OPENSSL_NO_CT
+ CTLOG_STORE_free(a->ctlog_store);
+#endif
sk_SSL_CIPHER_free(a->cipher_list);
sk_SSL_CIPHER_free(a->cipher_list_by_id);
ssl_cert_free(a->cert);
}
IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
+
+#ifndef OPENSSL_NO_CT
+
+/*
+ * Moves SCTs from the |src| stack to the |dst| stack.
+ * The source of each SCT will be set to |origin|.
+ * If |dst| points to a NULL pointer, a new stack will be created and owned by
+ * the caller.
+ * Returns the number of SCTs moved, or a negative integer if an error occurs.
+ */
+static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, sct_source_t origin)
+{
+ int scts_moved = 0;
+ SCT *sct = NULL;
+
+ if (*dst == NULL) {
+ *dst = sk_SCT_new_null();
+ if (*dst == NULL) {
+ SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ }
+
+ while ((sct = sk_SCT_pop(src)) != NULL) {
+ if (SCT_set_source(sct, origin) != 1)
+ goto err;
+
+ if (sk_SCT_push(*dst, sct) <= 0)
+ goto err;
+ scts_moved += 1;
+ }
+
+ return scts_moved;
+err:
+ if (sct != NULL)
+ sk_SCT_push(src, sct); /* Put the SCT back */
+ return scts_moved;
+}
+
+/*
+* Look for data collected during ServerHello and parse if found.
+* Return 1 on success, 0 on failure.
+*/
+static int ct_extract_tls_extension_scts(SSL *s)
+{
+ int scts_extracted = 0;
+
+ if (s->tlsext_scts != NULL) {
+ const unsigned char *p = s->tlsext_scts;
+ STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len);
+
+ scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
+
+ SCT_LIST_free(scts);
+ }
+
+ return scts_extracted;
+}
+
+/*
+ * Checks for an OCSP response and then attempts to extract any SCTs found if it
+ * contains an SCT X509 extension. They will be stored in |s->scts|.
+ * Returns:
+ * - The number of SCTs extracted, assuming an OCSP response exists.
+ * - 0 if no OCSP response exists or it contains no SCTs.
+ * - A negative integer if an error occurs.
+ */
+static int ct_extract_ocsp_response_scts(SSL *s)
+{
+ int scts_extracted = 0;
+ const unsigned char *p;
+ OCSP_BASICRESP *br = NULL;
+ OCSP_RESPONSE *rsp = NULL;
+ STACK_OF(SCT) *scts = NULL;
+ int i;
+
+ if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0)
+ goto err;
+
+ p = s->tlsext_ocsp_resp;
+ rsp = d2i_OCSP_RESPONSE(NULL, &p, s->tlsext_ocsp_resplen);
+ if (rsp == NULL)
+ goto err;
+
+ br = OCSP_response_get1_basic(rsp);
+ if (br == NULL)
+ goto err;
+
+ for (i = 0; i < OCSP_resp_count(br); ++i) {
+ OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
+
+ if (single == NULL)
+ continue;
+
+ scts = OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
+ scts_extracted = ct_move_scts(&s->scts, scts,
+ SCT_SOURCE_OCSP_STAPLED_RESPONSE);
+ if (scts_extracted < 0)
+ goto err;
+ }
+err:
+ SCT_LIST_free(scts);
+ OCSP_BASICRESP_free(br);
+ OCSP_RESPONSE_free(rsp);
+ return scts_extracted;
+}
+
+/*
+ * Attempts to extract SCTs from the peer certificate.
+ * Return the number of SCTs extracted, or a negative integer if an error
+ * occurs.
+ */
+static int ct_extract_x509v3_extension_scts(SSL *s)
+{
+ int scts_extracted = 0;
+ X509 *cert = SSL_get_peer_certificate(s);
+
+ if (cert != NULL) {
+ STACK_OF(SCT) *scts =
+ X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
+
+ scts_extracted =
+ ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
+
+ SCT_LIST_free(scts);
+ }
+
+ return scts_extracted;
+}
+
+/*
+ * Attempts to find all received SCTs by checking TLS extensions, the OCSP
+ * response (if it exists) and X509v3 extensions in the certificate.
+ * Returns NULL if an error occurs.
+ */
+const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
+{
+ if (!s->scts_parsed) {
+ if (ct_extract_tls_extension_scts(s) < 0 ||
+ ct_extract_ocsp_response_scts(s) < 0 ||
+ ct_extract_x509v3_extension_scts(s) < 0)
+ goto err;
+
+ s->scts_parsed = 1;
+ }
+ return s->scts;
+err:
+ return NULL;
+}
+
+int SSL_set_ct_validation_callback(SSL *s, ct_validation_cb callback, void *arg)
+{
+ int ret = 0;
+
+ /*
+ * Since code exists that uses the custom extension handler for CT, look
+ * for this and throw an error if they have already registered to use CT.
+ */
+ if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
+ TLSEXT_TYPE_signed_certificate_timestamp)) {
+ SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
+ SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
+ goto err;
+ }
+
+ s->ct_validation_callback = callback;
+ s->ct_validation_callback_arg = arg;
+
+ if (callback != NULL) {
+ /* If we are validating CT, then we MUST accept SCTs served via OCSP */
+ if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
+ goto err;
+ }
+
+ ret = 1;
+err:
+ return ret;
+}
+
+int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx, ct_validation_cb callback,
+ void *arg)
+{
+ int ret = 0;
+
+ /*
+ * Since code exists that uses the custom extension handler for CT, look for
+ * this and throw an error if they have already registered to use CT.
+ */
+ if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
+ TLSEXT_TYPE_signed_certificate_timestamp)) {
+ SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
+ SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
+ goto err;
+ }
+
+ ctx->ct_validation_callback = callback;
+ ctx->ct_validation_callback_arg = arg;
+ ret = 1;
+err:
+ return ret;
+}
+
+ct_validation_cb SSL_get_ct_validation_callback(const SSL *s)
+{
+ return s->ct_validation_callback;
+}
+
+ct_validation_cb SSL_CTX_get_ct_validation_callback(const SSL_CTX *ctx)
+{
+ return ctx->ct_validation_callback;
+}
+
+int SSL_validate_ct(SSL *s)
+{
+ int ret = 0;
+ X509 *cert = SSL_get_peer_certificate(s);
+ X509 *issuer = NULL;
+ CT_POLICY_EVAL_CTX *ctx = NULL;
+ const STACK_OF(SCT) *scts;
+
+ /* If no callback is set, attempt no validation - just return success */
+ if (s->ct_validation_callback == NULL)
+ return 1;
+
+ if (cert == NULL) {
+ SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_NO_CERTIFICATE_ASSIGNED);
+ goto end;
+ }
+
+ if (s->verified_chain != NULL && sk_X509_num(s->verified_chain) > 1)
+ issuer = sk_X509_value(s->verified_chain, 1);
+
+ ctx = CT_POLICY_EVAL_CTX_new();
+ if (ctx == NULL) {
+ SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
+ goto end;
+ }
+
+ CT_POLICY_EVAL_CTX_set0_cert(ctx, cert);
+ CT_POLICY_EVAL_CTX_set0_issuer(ctx, issuer);
+ CT_POLICY_EVAL_CTX_set0_log_store(ctx, s->ctx->ctlog_store);
+
+ scts = SSL_get0_peer_scts(s);
+
+ if (SCT_LIST_validate(scts, ctx) != 1) {
+ SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
+ goto end;
+ }
+
+ ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
+ if (ret < 0)
+ ret = 0; /* This function returns 0 on failure */
+
+end:
+ CT_POLICY_EVAL_CTX_free(ctx);
+ return ret;
+}
+
+int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
+{
+ int ret = CTLOG_STORE_load_default_file(ctx->ctlog_store);
+
+ /* Clear any errors if the default file does not exist */
+ ERR_clear_error();
+ return ret;
+}
+
+int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
+{
+ return CTLOG_STORE_load_file(ctx->ctlog_store, path);
+}
+
+#endif
# include <openssl/ssl.h>
# include <openssl/async.h>
# include <openssl/symhacks.h>
-
+# ifndef OPENSSL_NO_CT
+# include <openssl/ct.h>
+# endif
#include "record/record.h"
#include "statem/statem.h"
#include "packet_locl.h"
int quiet_shutdown;
+# ifndef OPENSSL_NO_CT
+ CTLOG_STORE *ctlog_store; /* CT Log Store */
+ /*
+ * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
+ * If they are not, the connection should be aborted.
+ */
+ ct_validation_cb ct_validation_callback;
+ void *ct_validation_callback_arg;
+# endif
+
/*
* Maximum amount of data to send in one fragment. actual record size can
* be more than this due to padding and MAC overheads.
/* certificate status request info */
/* Status type or -1 if no status type */
int tlsext_status_type;
+# ifndef OPENSSL_NO_CT
+ /*
+ * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
+ * If they are not, the connection should be aborted.
+ */
+ ct_validation_cb ct_validation_callback;
+ /* User-supplied argument tha tis passed to the ct_validation_callback */
+ void *ct_validation_callback_arg;
+ /*
+ * Consolidated stack of SCTs from all sources.
+ * Lazily populated by CT_get_peer_scts(SSL*)
+ */
+ STACK_OF(SCT) *scts;
+ /* Raw extension data, if seen */
+ unsigned char *tlsext_scts;
+ /* Length of raw extension data, if seen */
+ uint16_t tlsext_scts_len;
+ /* Have we attempted to find/parse SCTs yet? */
+ int scts_parsed;
+# endif
/* Expect OCSP CertificateStatus message */
int tlsext_status_expected;
/* OCSP status request only */
int idx);
void tls1_set_cert_validity(SSL *s);
+#ifndef OPENSSL_NO_CT
+__owur int SSL_validate_ct(SSL *s);
+#endif
+
# ifndef OPENSSL_NO_DH
__owur DH *ssl_get_auto_dh(SSL *s);
# endif
}
}
+#ifndef OPENSSL_NO_CT
+ if (s->ct_validation_callback != NULL) {
+ if (!SSL_validate_ct(s)) {
+ 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))
/* Custom extension utility functions */
+#ifndef OPENSSL_NO_CT
+# include <openssl/ct.h>
+#endif
#include "ssl_locl.h"
/* Find a custom extension from the list. */
-static custom_ext_method *custom_ext_find(custom_ext_methods *exts,
+static custom_ext_method *custom_ext_find(const custom_ext_methods *exts,
unsigned int ext_type)
{
size_t i;
*/
if (!add_cb && free_cb)
return 0;
- /* Don't add if extension supported internally. */
- if (SSL_extension_supported(ext_type))
+ /*
+ * Don't add if extension supported internally, but make exception
+ * for extension types that previously were not supported, but now are.
+ */
+ if (SSL_extension_supported(ext_type) &&
+ ext_type != TLSEXT_TYPE_signed_certificate_timestamp)
return 0;
/* Extension type must fit in 16 bits */
if (ext_type > 0xffff)
return 1;
}
+/* Return true if a client custom extension exists, false otherwise */
+int SSL_CTX_has_client_custom_ext(const SSL_CTX *ctx, unsigned int ext_type)
+{
+ return custom_ext_find(&ctx->cert->cli_ext, ext_type) != NULL;
+}
+
/* Application level functions to add custom extension callbacks */
int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
custom_ext_add_cb add_cb,
custom_ext_parse_cb parse_cb,
void *parse_arg)
{
- return custom_ext_meth_add(&ctx->cert->cli_ext, ext_type,
- add_cb, free_cb, add_arg, parse_cb, parse_arg);
+ int ret = custom_ext_meth_add(&ctx->cert->cli_ext, ext_type, add_cb,
+ free_cb, add_arg, parse_cb, parse_arg);
+
+ if (ret != 1)
+ goto end;
+
+#ifndef OPENSSL_NO_CT
+ /*
+ * We don't want applications registering callbacks for SCT extensions
+ * whilst simultaneously using the built-in SCT validation features, as
+ * these two things may not play well together.
+ */
+ if (ext_type == TLSEXT_TYPE_signed_certificate_timestamp &&
+ SSL_CTX_get_ct_validation_callback(ctx) != NULL) {
+ ret = 0;
+ }
+#endif
+end:
+ return ret;
}
int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
case TLSEXT_TYPE_signature_algorithms:
case TLSEXT_TYPE_srp:
case TLSEXT_TYPE_status_request:
+ case TLSEXT_TYPE_signed_certificate_timestamp:
case TLSEXT_TYPE_use_srtp:
#ifdef TLSEXT_TYPE_encrypt_then_mac
case TLSEXT_TYPE_encrypt_then_mac:
# include <openssl/bn.h>
#endif
#include "ssl_locl.h"
+#ifndef OPENSSL_NO_CT
+# include <openssl/ct.h>
+#endif
static int tls_decrypt_ticket(SSL *s, const unsigned char *tick, int ticklen,
const unsigned char *sess_id, int sesslen,
#ifdef TLSEXT_TYPE_encrypt_then_mac
s2n(TLSEXT_TYPE_encrypt_then_mac, ret);
s2n(0, ret);
+#endif
+#ifndef OPENSSL_NO_CT
+ if (s->ct_validation_callback != NULL) {
+ s2n(TLSEXT_TYPE_signed_certificate_timestamp, ret);
+ s2n(0, ret);
+ }
#endif
s2n(TLSEXT_TYPE_extended_master_secret, ret);
s2n(0, ret);
/* Set flag to expect CertificateStatus message */
s->tlsext_status_expected = 1;
}
+#ifndef OPENSSL_NO_CT
+ /*
+ * Only take it if we asked for it - i.e if there is no CT validation
+ * callback set, then a custom extension MAY be processing it, so we
+ * need to let control continue to flow to that.
+ */
+ else if (type == TLSEXT_TYPE_signed_certificate_timestamp &&
+ s->ct_validation_callback != NULL) {
+ /* Simply copy it off for later processing */
+ if (s->tlsext_scts != NULL) {
+ OPENSSL_free(s->tlsext_scts);
+ s->tlsext_scts = NULL;
+ }
+ s->tlsext_scts_len = size;
+ if (size > 0) {
+ s->tlsext_scts = OPENSSL_malloc(size);
+ if (s->tlsext_scts == NULL) {
+ *al = TLS1_AD_INTERNAL_ERROR;
+ return 0;
+ }
+ memcpy(s->tlsext_scts, data, size);
+ }
+ }
+#endif
#ifndef OPENSSL_NO_NEXTPROTONEG
else if (type == TLSEXT_TYPE_next_proto_neg &&
s->s3->tmp.finish_md_len == 0) {
{TLSEXT_TYPE_session_ticket, "session_ticket"},
{TLSEXT_TYPE_renegotiate, "renegotiate"},
{TLSEXT_TYPE_next_proto_neg, "next_proto_neg"},
+ {TLSEXT_TYPE_signed_certificate_timestamp, "signed_certificate_timestamps"},
{TLSEXT_TYPE_padding, "padding"},
{TLSEXT_TYPE_encrypt_then_mac, "encrypt_then_mac"},
{TLSEXT_TYPE_extended_master_secret, "extended_master_secret"}
if ((!SSL_CTX_load_verify_locations(s_ctx, CAfile, CApath)) ||
(!SSL_CTX_set_default_verify_paths(s_ctx)) ||
+ (!SSL_CTX_set_default_ctlog_list_file(s_ctx)) ||
(!SSL_CTX_load_verify_locations(c_ctx, CAfile, CApath)) ||
- (!SSL_CTX_set_default_verify_paths(c_ctx))) {
+ (!SSL_CTX_set_default_verify_paths(c_ctx)) ||
+ (!SSL_CTX_set_default_ctlog_list_file(c_ctx))) {
/* fprintf(stderr,"SSL_load_verify_locations\n"); */
ERR_print_errors(bio_err);
/* goto end; */
SSL_get_default_passwd_cb 478 1_1_0 EXIST::FUNCTION:
SSL_CTX_get_default_passwd_cb_userdata 479 1_1_0 EXIST::FUNCTION:
SSL_CTX_get_default_passwd_cb 480 1_1_0 EXIST::FUNCTION:
+SSL_CTX_get_ct_validation_callback 481 1_1_0 EXIST::FUNCTION:CT
+SSL_get_ct_validation_callback 482 1_1_0 EXIST::FUNCTION:CT
+SSL_CTX_has_client_custom_ext 483 1_1_0 EXIST::FUNCTION:
+SSL_CTX_set_ctlog_list_file 484 1_1_0 EXIST::FUNCTION:CT
+SSL_CTX_set_default_ctlog_list_file 485 1_1_0 EXIST::FUNCTION:CT
+SSL_set_ct_validation_callback 486 1_1_0 EXIST::FUNCTION:CT
+SSL_get0_peer_scts 487 1_1_0 EXIST::FUNCTION:CT
+SSL_CTX_set_ct_validation_callback 488 1_1_0 EXIST::FUNCTION:CT
projects / oweals / openssl.git / commitdiff