int tls_connection_private_key(void *_ssl_ctx, struct tls_connection *conn,
const char *private_key,
const char *private_key_passwd)
{
SSL_CTX *ssl_ctx = _ssl_ctx;
char *passwd;
if (private_key == NULL)
return 0;
if (conn == NULL)
return -1;
if (private_key_passwd) {
passwd = strdup(private_key_passwd);
if (passwd == NULL)
return -1;
} else
passwd = NULL;
SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
if (SSL_use_PrivateKey_file(conn->ssl, private_key,
SSL_FILETYPE_ASN1) != 1 &&
SSL_use_PrivateKey_file(conn->ssl, private_key,
SSL_FILETYPE_PEM) != 1 &&
tls_read_pkcs12(ssl_ctx, conn->ssl, private_key, passwd)) {
wpa_printf(MSG_INFO, "SSL: Failed to load private key: %s",
ERR_error_string(ERR_get_error(), NULL));
free(passwd);
ERR_clear_error();
return -1;
}
ERR_clear_error();
free(passwd);
SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
if (!SSL_check_private_key(conn->ssl)) {
wpa_printf(MSG_INFO, "SSL: Private key failed "
"verification: %s",
ERR_error_string(ERR_get_error(), NULL));
return -1;
}
return 0;
}
/// loads one private key
int Certificate::loadPrivateKeyFromFile( void )
{
const int certificateFileCheckResult = validateCertificateFilename(m_privkeyfn);
if(certificateFileCheckResult < 0) return certificateFileCheckResult;
m_ssl = SSL_new( SSL_CTX_new( SSLv23_method() ) );
SSL_use_PrivateKey_file( m_ssl, m_privkeyfn.c_str(), m_type);
return( 0 );
}
static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
{
int rv = 1;
if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
return -2;
if (cctx->ctx)
rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
if (cctx->ssl)
rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
return rv > 0;
}
static int conn_init_client_ssl(Connection *ret, Octstr *certkeyfile)
{
ret->ssl = SSL_new(global_ssl_context);
/*
* The current thread's error queue must be empty before
* the TLS/SSL I/O operation is attempted, or SSL_get_error()
* will not work reliably.
*/
ERR_clear_error();
if (certkeyfile != NULL) {
SSL_use_certificate_file(ret->ssl, octstr_get_cstr(certkeyfile),
SSL_FILETYPE_PEM);
SSL_use_PrivateKey_file(ret->ssl, octstr_get_cstr(certkeyfile),
SSL_FILETYPE_PEM);
if (SSL_check_private_key(ret->ssl) != 1) {
error(0, "conn_open_ssl: private key isn't consistent with the "
"certificate from file %s (or failed reading the file)",
octstr_get_cstr(certkeyfile));
return -1;
}
}
/* SSL_set_fd can fail, so check it */
if (SSL_set_fd(ret->ssl, ret->fd) == 0) {
/* SSL_set_fd failed, log error */
error(errno, "SSL: OpenSSL: %.256s", ERR_error_string(ERR_get_error(), NULL));
return -1;
}
/*
* make sure the socket is non-blocking while we do SSL_connect
*/
if (socket_set_blocking(ret->fd, 0) < 0) {
return -1;
}
BIO_set_nbio(SSL_get_rbio(ret->ssl), 1);
BIO_set_nbio(SSL_get_wbio(ret->ssl), 1);
SSL_set_connect_state(ret->ssl);
return 0;
}
DSCRPTR
nbr_ssl_accept(DSCRPTR fd, void *addr, int *alen, SKCONF *cfg)
{
int r, ret;
sslfd_t *sfd = nbr_array_alloc(g_ssl.socks), *afd = (sslfd_t *)fd;
if (!sfd) {
SSL_ERROUT(ERROR,EXPIRE,"sfd alloc fail");
goto bad;
}
if ((sfd->fd = nbr_osdep_tcp_accept(afd->fd, addr, alen, cfg)) == INVALID_FD) {
SSL_ERROUT(ERROR,ACCEPT,"ssl accept fail");
goto bad;
}
if (!(sfd->ssl = SSL_new(g_ssl.server))) {
SSL_ERROUT(ERROR,EXPIRE,"ssl new fail");
goto bad;
}
#if defined(_DEBUG)
sfd->ssl->info_callback = (void (*)())ssl_info_callback;
#endif
if (!g_ssl.pubkey || SSL_use_certificate_file(sfd->ssl, g_ssl.pubkey, SSL_FILETYPE_PEM) < 0) {
SSL_ERROUT(ERROR,EXPIRE,"ssl SSL_use_certificate_file fail");
goto bad;
}
if (!g_ssl.privkey || SSL_use_PrivateKey_file(sfd->ssl, g_ssl.privkey, SSL_FILETYPE_PEM) < 0) {
SSL_ERROUT(ERROR,EXPIRE,"ssl SSL_use_PrivateKey_file fail");
goto bad;
}
SSL_set_fd(sfd->ssl, sfd->fd);
if ((r = SSL_accept(sfd->ssl)) <= 0) {
ret = SSL_get_error(sfd->ssl, ret);
if (ret == SSL_ERROR_WANT_READ || ret == SSL_ERROR_WANT_WRITE) {
return 0; /* connection pending */
}
ERR_print_errors_fp(stderr);
SSL_ERROUT(ERROR,ACCEPT,"ssl_accept fail (%d/%d)", r, ret);
goto bad;
}
return (DSCRPTR)sfd;
bad:
ssl_free_fd(sfd);
return INVALID_FD;
}
int main( int argc, char *argv[])
{
int port = 10001;
int n;
int s;
if (argc > 1)
{
sscanf( argv[1], "%d", &port);
}
SSL_library_init();
SSL_load_error_strings();
s = socket( PF_INET, SOCK_STREAM, 0);
if (s != -1)
{
int cs;
char buf[1024];
struct sockaddr_in sa;
int on;
on = 1;
setsockopt( s, SOL_SOCKET, SO_REUSEADDR, (const void *)&on, sizeof( on));
memset( &sa, 0, sizeof( sa));
sa.sin_family = AF_INET;
sa.sin_port = htons( port);
sa.sin_addr.s_addr = INADDR_ANY;
bind( s, (struct sockaddr *)&sa, sizeof( sa));
listen( s, 1);
while (1)
{
printf( "accepting on port %d..\n", port);
cs = accept( s, NULL, NULL);
if (cs != -1)
{
SSL *ssl = 0;
SSL_CTX *ssl_ctx = 0;
ssl_ctx = SSL_CTX_new( SSLv23_server_method());
if (ssl_ctx)
{
ssl = SSL_new( ssl_ctx);
if (ssl)
{
n = SSL_use_PrivateKey_file( ssl, key_file, 1);
if (n != 1)
printf( "failed to SSL use key (%d, %d)\n", n, SSL_get_error( ssl, n));
n = SSL_use_certificate_file( ssl, certificate_file, 1);
if (n != 1)
printf( "failed to SSL use cert (%d, %d)\n", n, SSL_get_error( ssl, n));
if (SSL_set_fd( ssl, cs))
{
printf( "SSL accepting..\n");
n = SSL_accept( ssl);
if (n == 1)
{
printf( "ssl initiated\n");
if ((n = SSL_read( ssl, buf, sizeof( buf))) > 0)
{
if (n > (sizeof( buf) - 1))
n = sizeof( buf) - 1;
buf[n] = 0;
printf( "SSL_read %d bytes [%s]\n", n, buf);
}
else
printf( "failed to SSL read\n");
}
else
{
#ifdef WIN32
unsigned long err = ERR_get_error();
printf( "failed to SSL accept (%d, %d) (%ld, %s)\n", n, SSL_get_error( ssl, n), err, ERR_error_string( err, NULL));
#else
printf( "failed to SSL accept (%d)\n", n);
#endif
}
}
else
printf( "failed to SSL set fd\n");
SSL_shutdown( ssl);
}
else
printf( "couldn't create server ssl\n");
SSL_CTX_free( ssl_ctx);
}
else
printf( "couldn't create server ctx\n");
close( cs);
}
else
perror( "accept");
}
}
else
perror( "socket");
return 0;
}
static int
ngx_http_multiple_ssl_set_der_certificate(ngx_ssl_conn_t *ssl_conn, ngx_str_t *cert, ngx_str_t *key)
{
BIO *bio = NULL;
X509 *x509 = NULL;
u_long n;
bio = BIO_new_file((char *) cert->data, "r");
if (bio == NULL) {
return NGX_ERROR;
}
x509 = PEM_read_bio_X509_AUX(bio, NULL, NULL, NULL);
if (x509 == NULL) {
BIO_free(bio);
return NGX_ERROR;
}
SSL_certs_clear(ssl_conn);
if (SSL_use_certificate(ssl_conn, x509) == 0) {
X509_free(x509);
BIO_free(bio);
return NGX_ERROR;
}
#if 0
if (SSL_set_ex_data(ssl_conn, ngx_ssl_certificate_index, x509) == 0) {
X509_free(x509);
BIO_free(bio);
return NGX_ERROR;
}
#endif
X509_free(x509);
x509 = NULL;
/* read rest of the chain */
for ( ;; ) {
x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
if (x509 == NULL) {
n = ERR_peek_last_error();
if (ERR_GET_LIB(n) == ERR_LIB_PEM
&& ERR_GET_REASON(n) == PEM_R_NO_START_LINE)
{
ERR_clear_error();
break;
}
BIO_free(bio);
return NGX_ERROR;
}
if (SSL_add0_chain_cert(ssl_conn, x509) == 0) {
X509_free(x509);
BIO_free(bio);
return NGX_ERROR;
}
}
BIO_free(bio);
bio = NULL;
if (SSL_use_PrivateKey_file(ssl_conn, (char *) key->data,
SSL_FILETYPE_PEM) != 1)
{
return NGX_ERROR;
}
return NGX_OK;
}
/** Create a new server TLS session
*
* Configures a new server TLS session, configuring options, setting callbacks etc...
*
* @param ctx to alloc session data in. Should usually be NULL unless the lifetime of the
* session is tied to another talloc'd object.
* @param conf values for this TLS session.
* @param request The current #REQUEST.
* @param client_cert Whether to require a client_cert.
* @return
* - A new session on success.
* - NULL on error.
*/
tls_session_t *tls_session_init_server(TALLOC_CTX *ctx, fr_tls_conf_t *conf, REQUEST *request, bool client_cert)
{
tls_session_t *session = NULL;
SSL *new_tls = NULL;
int verify_mode = 0;
VALUE_PAIR *vp;
SSL_CTX *ssl_ctx;
rad_assert(request != NULL);
rad_assert(conf->ctx_count > 0);
RDEBUG2("Initiating new TLS session");
ssl_ctx = conf->ctx[(conf->ctx_count == 1) ? 0 : conf->ctx_next++ % conf->ctx_count]; /* mutex not needed */
rad_assert(ssl_ctx);
new_tls = SSL_new(ssl_ctx);
if (new_tls == NULL) {
tls_log_error(request, "Error creating new TLS session");
return NULL;
}
session = talloc_zero(ctx, tls_session_t);
if (session == NULL) {
RERROR("Error allocating memory for TLS session");
SSL_free(new_tls);
return NULL;
}
session_init(session);
session->ctx = ssl_ctx;
session->ssl = new_tls;
talloc_set_destructor(session, _tls_session_free);
/*
* Initialize callbacks
*/
session->record_init = record_init;
session->record_close = record_close;
session->record_from_buff = record_from_buff;
session->record_to_buff = record_to_buff;
/*
* Create & hook the BIOs to handle the dirty side of the
* SSL. This is *very important* as we want to handle
* the transmission part. Now the only IO interface
* that SSL is aware of, is our defined BIO buffers.
*
* This means that all SSL IO is done to/from memory,
* and we can update those BIOs from the packets we've
* received.
*/
session->into_ssl = BIO_new(BIO_s_mem());
session->from_ssl = BIO_new(BIO_s_mem());
SSL_set_bio(session->ssl, session->into_ssl, session->from_ssl);
/*
* Add the message callback to identify what type of
* message/handshake is passed
*/
SSL_set_msg_callback(new_tls, tls_session_msg_cb);
SSL_set_msg_callback_arg(new_tls, session);
SSL_set_info_callback(new_tls, tls_session_info_cb);
/*
* This sets the context sessions can be resumed in.
* This is to prevent sessions being created by one application
* and used by another. In our case it prevents sessions being
* reused between modules, or TLS server components such as
* RADSEC.
*
* A context must always be set when doing session resumption
* otherwise session resumption will fail.
*
* As the context ID must be <= 32, we digest the context
* data with sha256.
*/
rad_assert(conf->session_id_name);
{
char *context_id;
EVP_MD_CTX *md_ctx;
uint8_t digest[SHA256_DIGEST_LENGTH];
static_assert(sizeof(digest) <= SSL_MAX_SSL_SESSION_ID_LENGTH,
"SSL_MAX_SSL_SESSION_ID_LENGTH must be >= SHA256_DIGEST_LENGTH");
if (tmpl_aexpand(session, &context_id, request, conf->session_id_name, NULL, NULL) < 0) {
RPEDEBUG("Failed expanding session ID");
talloc_free(session);
}
MEM(md_ctx = EVP_MD_CTX_create());
EVP_DigestInit_ex(md_ctx, EVP_sha256(), NULL);
EVP_DigestUpdate(md_ctx, context_id, talloc_array_length(context_id) - 1);
EVP_DigestFinal_ex(md_ctx, digest, NULL);
EVP_MD_CTX_destroy(md_ctx);
talloc_free(context_id);
if (!fr_cond_assert(SSL_set_session_id_context(session->ssl, digest, sizeof(digest)) == 1)) {
talloc_free(session);
return NULL;
}
}
/*
* Add the session certificate to the session.
*/
vp = fr_pair_find_by_da(request->control, attr_tls_session_cert_file, TAG_ANY);
if (vp) {
RDEBUG2("Loading TLS session certificate \"%s\"", vp->vp_strvalue);
if (SSL_use_certificate_file(session->ssl, vp->vp_strvalue, SSL_FILETYPE_PEM) != 1) {
tls_log_error(request, "Failed loading TLS session certificate \"%s\"",
vp->vp_strvalue);
talloc_free(session);
return NULL;
}
if (SSL_use_PrivateKey_file(session->ssl, vp->vp_strvalue, SSL_FILETYPE_PEM) != 1) {
tls_log_error(request, "Failed loading TLS session certificate \"%s\"",
vp->vp_strvalue);
talloc_free(session);
return NULL;
}
if (SSL_check_private_key(session->ssl) != 1) {
tls_log_error(request, "Failed validating TLS session certificate \"%s\"",
vp->vp_strvalue);
talloc_free(session);
return NULL;
}
/*
* Better to perform explicit checks, than rely
* on OpenSSL's opaque error messages.
*/
} else {
if (!conf->chains || !conf->chains[0]->private_key_file) {
ERROR("TLS Server requires a private key file");
talloc_free(session);
return NULL;
}
if (!conf->chains || !conf->chains[0]->certificate_file) {
ERROR("TLS Server requires a certificate file");
talloc_free(session);
return NULL;
}
}
/*
* In Server mode we only accept.
*
* This sets up the SSL session to work correctly with
* tls_session_handhsake.
*/
SSL_set_accept_state(session->ssl);
/*
* Verify the peer certificate, if asked.
*/
if (client_cert) {
RDEBUG2("Setting verify mode to require certificate from client");
verify_mode = SSL_VERIFY_PEER;
verify_mode |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
verify_mode |= SSL_VERIFY_CLIENT_ONCE;
}
SSL_set_verify(session->ssl, verify_mode, tls_validate_cert_cb);
SSL_set_ex_data(session->ssl, FR_TLS_EX_INDEX_CONF, (void *)conf);
SSL_set_ex_data(session->ssl, FR_TLS_EX_INDEX_TLS_SESSION, (void *)session);
/*
* We use default fragment size, unless the Framed-MTU
* tells us it's too big. Note that we do NOT account
* for the EAP-TLS headers if conf->fragment_size is
* large, because that config item looks to be confusing.
*
* i.e. it should REALLY be called MTU, and the code here
* should figure out what that means for TLS fragment size.
* asking the administrator to know the internal details
* of EAP-TLS in order to calculate fragment sizes is
* just too much.
*/
session->mtu = conf->fragment_size;
vp = fr_pair_find_by_da(request->packet->vps, attr_framed_mtu, TAG_ANY);
if (vp && (vp->vp_uint32 > 100) && (vp->vp_uint32 < session->mtu)) {
RDEBUG2("Setting fragment_len to %u from &Framed-MTU", vp->vp_uint32);
session->mtu = vp->vp_uint32;
}
if (conf->session_cache_server) session->allow_session_resumption = true; /* otherwise it's false */
return session;
}
