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| author | Glenn Strauss <gstrauss@gluelogic.com> | 2020-09-09 02:52:34 -0400 |
|---|---|---|
| committer | Glenn Strauss <gstrauss@gluelogic.com> | 2020-10-11 12:19:26 -0400 |
| commit | c3a85c9bf56d8e3d3fc83a5fdb19c22bbf15ab61 (patch) | |
| tree | ebcec04aa1bae4571f99edd957e7eab55023ad0d | |
| parent | 1d9709b8abb342b0978a215825cfc78cd2365a11 (diff) | |
| download | lighttpd-git-c3a85c9bf56d8e3d3fc83a5fdb19c22bbf15ab61.tar.gz | |
[mod_wolfssl] standalone module
standalone module forked from mod_openssl
| -rw-r--r-- | configure.ac | 50 | ||||
| -rw-r--r-- | src/CMakeLists.txt | 25 | ||||
| -rw-r--r-- | src/Makefile.am | 35 | ||||
| -rw-r--r-- | src/SConscript | 2 | ||||
| -rw-r--r-- | src/meson.build | 2 | ||||
| -rw-r--r-- | src/mod_openssl.c | 791 | ||||
| -rw-r--r-- | src/mod_wolfssl.c | 3447 | ||||
| -rw-r--r-- | src/rand.c | 10 | ||||
| -rw-r--r-- | src/sys-crypto-md.h | 8 | ||||
| -rw-r--r-- | src/sys-crypto.h | 2 |
10 files changed, 3552 insertions, 820 deletions
diff --git a/configure.ac b/configure.ac index 0846e4bb..81e5ffd4 100644 --- a/configure.ac +++ b/configure.ac @@ -640,6 +640,7 @@ AC_ARG_WITH([openssl], [WITH_OPENSSL=no] ) AC_MSG_RESULT([$WITH_OPENSSL]) +AM_CONDITIONAL([BUILD_WITH_OPENSSL], test ! "$WITH_OPENSSL" = no) if test "$WITH_OPENSSL" != no; then if test "$WITH_OPENSSL" != yes; then @@ -690,13 +691,15 @@ if test "$WITH_OPENSSL" != no; then [AC_MSG_ERROR([openssl crypto library not found. install it or build without --with-openssl])] ) AC_CHECK_LIB([ssl], [SSL_new], - [SSL_LIB="-lssl -lcrypto"], + [OPENSSL_LIBS="${openssl_append_LDFLAGS} -lssl -lcrypto"], [AC_MSG_ERROR([openssl ssl library not found. install it or build without --with-openssl])], [ -lcrypto "$DL_LIB" ] ) AC_DEFINE([HAVE_LIBSSL], [1], [Have libssl]) - AC_SUBST([SSL_LIB]) + OPENSSL_CFLAGS="${openssl_append_CPPFLAGS}" + AC_SUBST([OPENSSL_CFLAGS]) + AC_SUBST([OPENSSL_LIBS]) AC_SUBST([CRYPTO_LIB]) fi @@ -711,20 +714,23 @@ AC_ARG_WITH([wolfssl], [WITH_WOLFSSL=no] ) AC_MSG_RESULT([$WITH_WOLFSSL]) +AM_CONDITIONAL([BUILD_WITH_WOLFSSL], test ! "$WITH_WOLFSSL" = no) if test "$WITH_WOLFSSL" != no; then - if test "$WITH_WOLFSSL" = yes; then - WITH_WOLFSSL="/usr/local" + CPPFLAGS_SAVE="${CPPFLAGS}" + LDFLAGS_SAVE="${LDFLAGS}" + if test "$WITH_WOLFSSL" != yes; then + WOLFSSL_CFLAGS="-I$WITH_WOLFSSL/include -I$WITH_WOLFSSL/include/wolfssl" + WOLFSSL_LIBS="-L$WITH_WOLFSSL/lib -lwolfssl" + CPPFLAGS="${CPPFLAGS} $WOLFSSL_CFLAGS" + LDFLAGS="${LDFLAGS} $WOLFSSL_LIBS" fi - CPPFLAGS="${CPPFLAGS} -I$WITH_WOLFSSL/include -I$WITH_WOLFSSL/include/wolfssl" - LDFLAGS="${LDFLAGS} -L$WITH_WOLFSSL/lib" - AC_CHECK_HEADERS([wolfssl/ssl.h], [], [ AC_MSG_ERROR([wolfssl headers not found. install them or build without --with-wolfssl]) ]) AC_CHECK_LIB([wolfssl], [wolfSSL_Init], - [CRYPTO_LIB="-lwolfssl"], + [WOLFSSL_CRYPTO_LIB="-lwolfssl"], [AC_MSG_ERROR([wolfssl crypto library not found. install it or build without --with-wolfssl])] ) AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ @@ -733,17 +739,16 @@ if test "$WITH_WOLFSSL" != no; then #error HAVE_LIGHTY macro not defined #endif ]])], [], [AC_MSG_ERROR([wolfssl must be built with ./configure --enable-lighty])]) - SSL_LIB="-lwolfssl" - - AC_SUBST([SSL_LIB]) - AC_SUBST([CRYPTO_LIB]) -fi -AM_CONDITIONAL([BUILD_WITH_OPENSSL], - [test "$WITH_OPENSSL" != no || test "$WITH_WOLFSSL" != no]) - -if test "$WITH_OPENSSL" != no && test "$WITH_WOLFSSL" != no; then - AC_MSG_ERROR([lighttpd should not be built with both --with-openssl and --with-wolfssl]) + AC_SUBST([WOLFSSL_CFLAGS]) + AC_SUBST([WOLFSSL_LIBS]) + if test "$WITH_OPENSSL" = no; then + CRYPTO_LIB="$WOLFSSL_CRYPTO_LIB" + AC_SUBST([CRYPTO_LIB]) + else + CPPFLAGS="${CPPFLAGS_SAVE}" + LDFLAGS="${LDFLAGS_SAVE}" + fi fi dnl Check for mbedTLS @@ -773,7 +778,7 @@ if test "x$use_mbedtls" = "xyes"; then AC_CHECK_LIB(mbedcrypto,mbedtls_base64_encode, [AC_CHECK_LIB(mbedx509, mbedtls_x509_get_name, [AC_CHECK_LIB(mbedtls, mbedtls_cipher_info_from_type, - [MTLS_LIB="-lmbedtls -lmbedx509 -lmbedcrypto" + [MTLS_LIBS="-lmbedtls -lmbedx509 -lmbedcrypto" CRYPTO_LIB="-lmbedcrypto" AC_DEFINE(HAVE_LIBMBEDTLS, [1], [Have libmbedtls library]) AC_DEFINE(HAVE_LIBMBEDX509, [1], [Have libmbedx509 library]) @@ -782,7 +787,7 @@ if test "x$use_mbedtls" = "xyes"; then ],[],[-lmbedcrypto "$DL_LIB"]) ],[],[]) LIBS="$OLDLIBS" - AC_SUBST(MTLS_LIB) + AC_SUBST(MTLS_LIBS) AC_SUBST(CRYPTO_LIB) fi @@ -1706,7 +1711,7 @@ lighty_track_feature "pam" "mod_authn_pam" \ 'test "$WITH_PAM" != no' lighty_track_feature "network-openssl" "mod_openssl" \ - 'test "$WITH_OPENSSL" != no || test "$WITH_WOLFSSL" != no' + 'test "$WITH_OPENSSL" != no' lighty_track_feature "network-mbedtls" "mod_mbedtls" \ 'test "$WITH_MBEDTLS" != no' @@ -1717,6 +1722,9 @@ lighty_track_feature "network-gnutls" "mod_gnutls" \ lighty_track_feature "network-nss" "mod_nss" \ 'test "$WITH_NSS" != no' +lighty_track_feature "network-wolfssl" "mod_wolfssl" \ + 'test "$WITH_WOLFSSL" != no' + lighty_track_feature "auth-crypt" "" \ 'test "$found_crypt" != no' diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt index b50b02ed..2d614fae 100644 --- a/src/CMakeLists.txt +++ b/src/CMakeLists.txt @@ -313,6 +313,7 @@ if(WITH_OPENSSL) if(HAVE_LIBCRYPTO) set(CRYPTO_LIBRARY crypto) check_library_exists(ssl SSL_new "" HAVE_LIBSSL) + set(HAVE_OPENSSL 1) endif() endif() else() @@ -362,6 +363,7 @@ if(WITH_WOLFSSL) if(HAVE_LIBCRYPTO) set(CRYPTO_LIBRARY ${WOLFSSL_LIBRARY}) add_definitions(-DHAVE_WOLFSSL_SSL_H) + set(HAVE_WOLFSSL 1) endif() set(CMAKE_REQUIRED_INCLUDES) set(CMAKE_REQUIRED_LIBRARIES) @@ -1115,16 +1117,7 @@ if(NOT BUILD_STATIC) endif() if(NOT ${CRYPTO_LIBRARY} EQUAL "") - if(NOT WITH_WOLFSSL) - target_link_libraries(lighttpd ssl) - endif() target_link_libraries(lighttpd ${CRYPTO_LIBRARY}) - add_and_install_library(mod_openssl "mod_openssl.c") - if(NOT WITH_WOLFSSL) - set(L_MOD_OPENSSL ${L_MOD_OPENSSL} ssl) - endif() - set(L_MOD_OPENSSL ${L_MOD_OPENSSL} ${CRYPTO_LIBRARY}) - target_link_libraries(mod_openssl ${L_MOD_OPENSSL}) target_link_libraries(mod_auth ${CRYPTO_LIBRARY}) set(L_MOD_AUTHN_FILE ${L_MOD_AUTHN_FILE} ${CRYPTO_LIBRARY}) target_link_libraries(mod_authn_file ${L_MOD_AUTHN_FILE}) @@ -1132,15 +1125,23 @@ if(NOT ${CRYPTO_LIBRARY} EQUAL "") target_link_libraries(mod_wstunnel ${CRYPTO_LIBRARY}) endif() +if(HAVE_OPENSSL) + add_and_install_library(mod_openssl "mod_openssl.c") + set(L_MOD_OPENSSL ${L_MOD_OPENSSL} ssl crypto) + target_link_libraries(mod_openssl ${L_MOD_OPENSSL}) +endif() + +if(HAVE_WOLFSSL) + add_and_install_library(mod_wolfssl "mod_wolfssl.c") + target_link_libraries(mod_wolfssl wolfssl) +endif() + if(HAVE_LIBGNUTLS) add_and_install_library(mod_gnutls "mod_gnutls.c") target_link_libraries(mod_gnutls gnutls) endif() if(HAVE_LIBMBEDTLS AND HAVE_LIBMEDCRYPTO AND HAVE_LIBMEDX509) - target_link_libraries(lighttpd mbedtls) - target_link_libraries(lighttpd mbedcrypto) - target_link_libraries(lighttpd mbedx509) add_and_install_library(mod_mbedtls "mod_mbedtls.c") set(L_MOD_MBEDTLS ${L_MOD_MBEDTLS} mbedtls mbedcrypto mbedx509) target_link_libraries(mod_mbedtls ${L_MOD_MBEDTLS}) diff --git a/src/Makefile.am b/src/Makefile.am index 0ba84a9d..24456646 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -392,14 +392,15 @@ if BUILD_WITH_OPENSSL lib_LTLIBRARIES += mod_openssl.la mod_openssl_la_SOURCES = mod_openssl.c mod_openssl_la_LDFLAGS = $(common_module_ldflags) -mod_openssl_la_LIBADD = $(SSL_LIB) $(common_libadd) +mod_openssl_la_LIBADD = $(OPENSSL_LIBS) $(common_libadd) +mod_openssl_la_CPPFLAGS = $(OPENSSL_CFLAGS) endif if BUILD_WITH_MBEDTLS lib_LTLIBRARIES += mod_mbedtls.la mod_mbedtls_la_SOURCES = mod_mbedtls.c mod_mbedtls_la_LDFLAGS = $(common_module_ldflags) -mod_mbedtls_la_LIBADD = $(MTLS_LIB) $(common_libadd) +mod_mbedtls_la_LIBADD = $(MTLS_LIBS) $(common_libadd) endif if BUILD_WITH_GNUTLS @@ -418,6 +419,14 @@ mod_nss_la_LIBADD = $(NSS_LIBS) $(common_libadd) mod_nss_la_CPPFLAGS = $(NSS_CFLAGS) endif +if BUILD_WITH_WOLFSSL +lib_LTLIBRARIES += mod_wolfssl.la +mod_wolfssl_la_SOURCES = mod_wolfssl.c +mod_wolfssl_la_LDFLAGS = $(common_module_ldflags) +mod_wolfssl_la_LIBADD = $(WOLFSSL_LIBS) $(common_libadd) +mod_wolfssl_la_CPPFLAGS = $(WOLFSSL_CFLAGS) +endif + lib_LTLIBRARIES += mod_rewrite.la mod_rewrite_la_SOURCES = mod_rewrite.c @@ -567,7 +576,27 @@ lighttpd_LDADD += $(DBI_LIBS) endif if BUILD_WITH_OPENSSL lighttpd_SOURCES += mod_openssl.c -lighttpd_LDADD += $(SSL_LIB) +lighttpd_CPPFLAGS += $(OPENSSL_CFLAGS) +lighttpd_LDADD += $(OPENSSL_LIBS) +endif +if BUILD_WITH_MBEDTLS +lighttpd_SOURCES += mod_mbedtls.c +lighttpd_LDADD += $(MTLS_LIBS) +endif +if BUILD_WITH_GNUTLS +lighttpd_SOURCES += mod_gnutls.c +lighttpd_CPPFLAGS += $(GNUTLS_CFLAGS) +lighttpd_LDADD += $(GNUTLS_LIBS) +endif +if BUILD_WITH_NSS +lighttpd_SOURCES += mod_nss.c +lighttpd_CPPFLAGS += $(NSS_CFLAGS) +lighttpd_LDADD += $(NSS_LIBS) +endif +if BUILD_WITH_WOLFSSL +lighttpd_SOURCES += mod_wolfssl.c +lighttpd_CPPFLAGS += $(WOLFSSL_CFLAGS) +lighttpd_LDADD += $(WOLFSSL_LIBS) endif if BUILD_WITH_MEMCACHED lighttpd_CPPFLAGS += $(MEMCACHED_CFLAGS) diff --git a/src/SConscript b/src/SConscript index a0766ce8..d212a7b8 100644 --- a/src/SConscript +++ b/src/SConscript @@ -178,7 +178,7 @@ if env['with_openssl']: modules['mod_openssl'] = { 'src' : [ 'mod_openssl.c' ], 'lib' : [ env['LIBSSL'], env['LIBCRYPTO'] ] } if env['with_wolfssl']: - modules['mod_openssl'] = { 'src' : [ 'mod_openssl.c' ], 'lib' : [ env['LIBCRYPTO'], 'm' ] } + modules['mod_wolfssl'] = { 'src' : [ 'mod_wolfssl.c' ], 'lib' : [ env['LIBCRYPTO'], 'm' ] } if env['with_mbedtls']: modules['mod_mbedtls'] = { 'src' : [ 'mod_mbedtls.c' ], 'lib' : [ env['LIBSSL'], env['LIBX509'], env['LIBCRYPTO'] ] } diff --git a/src/meson.build b/src/meson.build index 110c71fd..d7d0ce91 100644 --- a/src/meson.build +++ b/src/meson.build @@ -1026,7 +1026,7 @@ endif if get_option('with_wolfssl') != 'false' modules += [ - [ 'mod_openssl', [ 'mod_openssl.c' ], libcrypto ], + [ 'mod_wolfssl', [ 'mod_wolfssl.c' ], libcrypto ], ] endif diff --git a/src/mod_openssl.c b/src/mod_openssl.c index 671c7671..63e77b0d 100644 --- a/src/mod_openssl.c +++ b/src/mod_openssl.c @@ -56,21 +56,6 @@ #undef OPENSSL_NO_STDIO /* for X509_STORE_load_locations() */ #endif -#ifdef WOLFSSL_OPTIONS_H -/* WolfSSL defines OPENSSL_VERSION_NUMBER 0x10001040L for OPENSSL_ALL - * or HAVE_LIGHTY. WolfSSL does not provide many interfaces added in - * OpenSSL 1.0.2, including SSL_CTX_set_cert_cb(), so it is curious that - * WolFSSL defines OPENSSL_VERSION_NUMBER 0x10100000L for WOLFSSL_APACHE_HTTPD*/ -#ifndef OPENSSL_EXTRA -#define OPENSSL_EXTRA -#endif -#ifndef OPENSSL_ALL -#define OPENSSL_ALL -#endif -#include <wolfssl/ssl.h> -#include <wolfssl/crl.h> -#endif - #include <openssl/ssl.h> #include <openssl/bio.h> #include <openssl/bn.h> @@ -100,56 +85,6 @@ #endif #endif -#ifdef WOLFSSL_VERSION - -#ifdef HAVE_ALPN -#undef OPENSSL_NO_TLSEXT -#else -#define OPENSSL_NO_TLSEXT -#endif -#ifdef HAVE_SESSION_TICKET -#define TLSEXT_TYPE_session_ticket -#endif -static char global_err_buf[WOLFSSL_MAX_ERROR_SZ]; -#undef ERR_error_string -#define ERR_error_string(e,b) \ - (wolfSSL_ERR_error_string_n((e),global_err_buf,WOLFSSL_MAX_ERROR_SZ), \ - global_err_buf) -/* WolfSSL does not provide OPENSSL_cleanse() */ -#define OPENSSL_cleanse(x,sz) safe_memclear((x),(sz)) -#define SSL_set_read_ahead(x,y) ((void)(y)) /*WolfSSL no SSL_set_read_ahead()*/ - -#if 0 /* symbols and definitions requires WolfSSL built with -DOPENSSL_EXTRA */ -#define SSL_TLSEXT_ERR_OK 0 -#define SSL_TLSEXT_ERR_ALERT_FATAL alert_fatal -#define SSL_TLSEXT_ERR_NOACK alert_warning - -WOLFSSL_API void wolfSSL_set_verify_depth(WOLFSSL *ssl,int depth); - -WOLFSSL_API void wolfSSL_X509_NAME_free(WOLFSSL_X509_NAME* name); -#define X509_NAME_cmp wolfSSL_X509_NAME_cmp -WOLFSSL_API int wolfSSL_X509_NAME_cmp(const WOLFSSL_X509_NAME* x, const WOLFSSL_X509_NAME* y); -WOLFSSL_API WOLFSSL_X509_NAME* wolfSSL_X509_NAME_dup(WOLFSSL_X509_NAME*); -WOLFSSL_API char* wolfSSL_X509_get_name_oneline(WOLFSSL_X509_NAME*, char*, int); - -#undef OBJ_sn2nid -#define OBJ_sn2nid(sn) wc_OBJ_sn2nid(sn) - -WOLFSSL_API const char* wolfSSL_OBJ_nid2sn(int n); -WOLFSSL_API int wolfSSL_OBJ_obj2nid(const WOLFSSL_ASN1_OBJECT *o); -WOLFSSL_API WOLFSSL_ASN1_OBJECT * wolfSSL_X509_NAME_ENTRY_get_object(WOLFSSL_X509_NAME_ENTRY *ne); -#define X509_NAME_get_entry wolfSSL_X509_NAME_get_entry -WOLFSSL_API WOLFSSL_X509_NAME_ENTRY *wolfSSL_X509_NAME_get_entry(WOLFSSL_X509_NAME *name, int loc); -#endif - -#if 0 /* symbols and definitions requires WolfSSL built with -DOPENSSL_ALL */ -WOLFSSL_API WOLF_STACK_OF(WOLFSSL_X509_NAME) *wolfSSL_dup_CA_list( WOLF_STACK_OF(WOLFSSL_X509_NAME) *sk ); -/*wolfSSL_sk_X509_NAME_new()*/ -/*wolfSSL_sk_X509_NAME_push()*/ -#endif - -#endif /* WOLFSSL_VERSION */ - #include "base.h" #include "fdevent.h" #include "http_header.h" @@ -160,15 +95,9 @@ WOLFSSL_API WOLF_STACK_OF(WOLFSSL_X509_NAME) *wolfSSL_dup_CA_list( WOLF_STACK_OF typedef struct { /* SNI per host: with COMP_SERVER_SOCKET, COMP_HTTP_SCHEME, COMP_HTTP_HOST */ - #ifdef WOLFSSL_VERSION - buffer *ssl_pemfile_pkey; - buffer *ssl_pemfile_x509; - buffer **ssl_pemfile_chain; - #else EVP_PKEY *ssl_pemfile_pkey; X509 *ssl_pemfile_x509; STACK_OF(X509) *ssl_pemfile_chain; - #endif buffer *ssl_stapling; const buffer *ssl_pemfile; const buffer *ssl_privkey; @@ -519,23 +448,17 @@ ssl_tlsext_status_cb(SSL *ssl, void *arg) int len = (int)buffer_string_length(ssl_stapling); - #ifdef WOLFSSL_VERSION /* WolfSSL does not require copy */ - uint8_t *ocsp_resp = (uint8_t *)ssl_stapling->ptr; - #else /* OpenSSL and LibreSSL require copy (BoringSSL, too, if using compat API)*/ uint8_t *ocsp_resp = OPENSSL_malloc(len); if (NULL == ocsp_resp) return SSL_TLSEXT_ERR_NOACK; /* ignore OCSP request if error occurs */ memcpy(ocsp_resp, ssl_stapling->ptr, len); - #endif if (!SSL_set_tlsext_status_ocsp_resp(ssl, ocsp_resp, len)) { log_error(hctx->r->conf.errh, __FILE__, __LINE__, "SSL: failed to set OCSP response for TLS server name %s: %s", hctx->r->uri.authority.ptr, ERR_error_string(ERR_get_error(), NULL)); - #ifndef WOLFSSL_VERSION /* WolfSSL does not require copy */ OPENSSL_free(ocsp_resp); - #endif return SSL_TLSEXT_ERR_NOACK; /* ignore OCSP request if error occurs */ /*return SSL_TLSEXT_ERR_ALERT_FATAL;*/ } @@ -548,9 +471,6 @@ ssl_tlsext_status_cb(SSL *ssl, void *arg) INIT_FUNC(mod_openssl_init) { plugin_data_singleton = (plugin_data *)calloc(1, sizeof(plugin_data)); - #ifdef DEBUG_WOLFSSL - wolfSSL_Debugging_ON(); - #endif return plugin_data_singleton; } @@ -560,19 +480,12 @@ static int mod_openssl_init_once_openssl (server *srv) if (ssl_is_init) return 1; #if OPENSSL_VERSION_NUMBER >= 0x10100000L \ - && !defined(LIBRESSL_VERSION_NUMBER) \ - && !defined(WOLFSSL_VERSION) + && !defined(LIBRESSL_VERSION_NUMBER) OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS |OPENSSL_INIT_LOAD_CRYPTO_STRINGS,NULL); OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS |OPENSSL_INIT_ADD_ALL_DIGESTS |OPENSSL_INIT_LOAD_CONFIG, NULL); - #elif defined(WOLFSSL_VERSION) - if (wolfSSL_Init() != WOLFSSL_SUCCESS) { - log_error(srv->errh, __FILE__, __LINE__, - "SSL: wolfSSL_Init() failed"); - return 0; - } #else SSL_load_error_strings(); SSL_library_init(); @@ -603,15 +516,9 @@ static void mod_openssl_free_openssl (void) #endif #if OPENSSL_VERSION_NUMBER >= 0x10100000L \ - && !defined(LIBRESSL_VERSION_NUMBER) \ - && !defined(WOLFSSL_VERSION) + && !defined(LIBRESSL_VERSION_NUMBER) /*(OpenSSL libraries handle thread init and deinit) * https://github.com/openssl/openssl/pull/1048 */ - #elif defined(WOLFSSL_VERSION) - if (wolfSSL_Cleanup() != WOLFSSL_SUCCESS) { - log_error(plugin_data_singleton->srv->errh, __FILE__, __LINE__, - "SSL: wolfSSL_Cleanup() failed"); - } #else CRYPTO_cleanup_all_ex_data(); ERR_free_strings(); @@ -628,18 +535,6 @@ static void mod_openssl_free_openssl (void) } -#ifdef WOLFSSL_VERSION -static void -mod_wolfssl_free_der_certs (buffer **certs) -{ - if (NULL == certs) return; - for (int i = 0; NULL != certs[i]; ++i) - buffer_free(certs[i]); - free(certs); -} -#endif - - static void mod_openssl_free_config (server *srv, plugin_data * const p) { @@ -668,15 +563,9 @@ mod_openssl_free_config (server *srv, plugin_data * const p) case 0: /* ssl.pemfile */ if (cpv->vtype == T_CONFIG_LOCAL) { plugin_cert *pc = cpv->v.v; - #ifdef WOLFSSL_VERSION - buffer_free(pc->ssl_pemfile_pkey); - /*buffer_free(pc->ssl_pemfile_x509);*//*(part of chain)*/ - mod_wolfssl_free_der_certs(pc->ssl_pemfile_chain); - #else EVP_PKEY_free(pc->ssl_pemfile_pkey); X509_free(pc->ssl_pemfile_x509); sk_X509_pop_free(pc->ssl_pemfile_chain, X509_free); - #endif buffer_free(pc->ssl_stapling); } break; @@ -700,375 +589,6 @@ mod_openssl_free_config (server *srv, plugin_data * const p) } -#ifdef WOLFSSL_VERSION - - -/* WolfSSL OpenSSL compat API does not wipe temp mem used; write our own */ -/* (pemfile might contain private key)*/ -/* code here is based on similar code in mod_nss */ -#include "base64.h" - -#define PEM_BEGIN "-----BEGIN " -#define PEM_END "-----END " -#define PEM_BEGIN_CERT "-----BEGIN CERTIFICATE-----" -#define PEM_END_CERT "-----END CERTIFICATE-----" -#define PEM_BEGIN_TRUSTED_CERT "-----BEGIN TRUSTED CERTIFICATE-----" -#define PEM_END_TRUSTED_CERT "-----END TRUSTED CERTIFICATE-----" -#define PEM_BEGIN_PKEY "-----BEGIN PRIVATE KEY-----" -#define PEM_END_PKEY "-----END PRIVATE KEY-----" -#define PEM_BEGIN_EC_PKEY "-----BEGIN EC PRIVATE KEY-----" -#define PEM_END_EC_PKEY "-----END EC PRIVATE KEY-----" -#define PEM_BEGIN_RSA_PKEY "-----BEGIN RSA PRIVATE KEY-----" -#define PEM_END_RSA_PKEY "-----END RSA PRIVATE KEY-----" -#define PEM_BEGIN_DSA_PKEY "-----BEGIN DSA PRIVATE KEY-----" -#define PEM_END_DSA_PKEY "-----END DSA PRIVATE KEY-----" -#define PEM_BEGIN_ANY_PKEY "-----BEGIN ANY PRIVATE KEY-----" -#define PEM_END_ANY_PKEY "-----END ANY PRIVATE KEY-----" -/* (not implemented: support to get password from user for encrypted key) */ -#define PEM_BEGIN_ENCRYPTED_PKEY "-----BEGIN ENCRYPTED PRIVATE KEY-----" -#define PEM_END_ENCRYPTED_PKEY "-----END ENCRYPTED PRIVATE KEY-----" - -#define PEM_BEGIN_X509_CRL "-----BEGIN X509 CRL-----" -#define PEM_END_X509_CRL "-----END X509 CRL-----" - - -static buffer * -mod_wolfssl_load_pem_file (const char *fn, log_error_st *errh, buffer ***chain) -{ - off_t dlen = 512*1024*1024;/*(arbitrary limit: 512 MB file; expect < 1 MB)*/ - char *data = fdevent_load_file(fn, &dlen, errh, malloc, free); - if (NULL == data) return NULL; - - buffer **certs = NULL; - int rc = -1; - do { - int count = 0; - char *b = data; - for (; (b = strstr(b, PEM_BEGIN_CERT)); b += sizeof(PEM_BEGIN_CERT)-1) - ++count; - b = data; - for (; (b = strstr(b, PEM_BEGIN_TRUSTED_CERT)); - b += sizeof(PEM_BEGIN_TRUSTED_CERT)-1) - ++count; - if (0 == count) { - rc = 0; - break; - } - - certs = malloc((count+1) * sizeof(buffer *)); - force_assert(NULL != certs); - certs[count] = NULL; - for (int i = 0; i < count; ++i) - certs[i] = buffer_init(); - - buffer *der; - int i = 0; - for (char *e = data; (b = strstr(e, PEM_BEGIN_CERT)); ++i) { - b += sizeof(PEM_BEGIN_CERT)-1; - if (*b == '\r') ++b; - if (*b == '\n') ++b; - e = strstr(b, PEM_END_CERT); - if (NULL == e) break; - uint32_t len = (uint32_t)(e - b); - e += sizeof(PEM_END_CERT)-1; - if (i >= count) break; /*(should not happen)*/ - der = certs[i]; - if (NULL == buffer_append_base64_decode(der,b,len,BASE64_STANDARD)) - break; - } - for (char *e = data; (b = strstr(e, PEM_BEGIN_TRUSTED_CERT)); ++i) { - b += sizeof(PEM_BEGIN_TRUSTED_CERT)-1; - if (*b == '\r') ++b; - if (*b == '\n') ++b; - e = strstr(b, PEM_END_TRUSTED_CERT); - if (NULL == e) break; - uint32_t len = (uint32_t)(e - b); - e += sizeof(PEM_END_TRUSTED_CERT)-1; - if (i >= count) break; /*(should not happen)*/ - der = certs[i]; - if (NULL == buffer_append_base64_decode(der,b,len,BASE64_STANDARD)) - break; - } - if (i == count) - rc = 0; - else - errno = EIO; - } while (0); - - if (dlen) safe_memclear(data, dlen); - free(data); - - if (rc < 0) { - log_perror(errh, __FILE__, __LINE__, "error loading %s", fn); - mod_wolfssl_free_der_certs(certs); - certs = NULL; - } - - *chain = certs; - return certs ? certs[0] : NULL; -} - - -static buffer * -mod_wolfssl_evp_pkey_load_pem_file (const char *fn, log_error_st *errh) -{ - off_t dlen = 512*1024*1024;/*(arbitrary limit: 512 MB file; expect < 1 MB)*/ - char *data = fdevent_load_file(fn, &dlen, errh, malloc, free); - if (NULL == data) return NULL; - - buffer *pkey = NULL; - int rc = -1; - do { - /*(expecting single private key in file, so first match)*/ - char *b, *e; - if ((b = strstr(data, PEM_BEGIN_PKEY)) - && (e = strstr(b, PEM_END_PKEY))) - b += sizeof(PEM_BEGIN_PKEY)-1; - else if ((b = strstr(data, PEM_BEGIN_EC_PKEY)) - && (e = strstr(b, PEM_END_EC_PKEY))) - b += sizeof(PEM_BEGIN_EC_PKEY)-1; - else if ((b = strstr(data, PEM_BEGIN_RSA_PKEY)) - && (e = strstr(b, PEM_END_RSA_PKEY))) - b += sizeof(PEM_BEGIN_RSA_PKEY)-1; - else if ((b = strstr(data, PEM_BEGIN_DSA_PKEY)) - && (e = strstr(b, PEM_END_DSA_PKEY))) - b += sizeof(PEM_BEGIN_DSA_PKEY)-1; - else if ((b = strstr(data, PEM_BEGIN_ANY_PKEY)) - && (e = strstr(b, PEM_END_ANY_PKEY))) - b += sizeof(PEM_BEGIN_ANY_PKEY)-1; - else - break; - if (*b == '\r') ++b; - if (*b == '\n') ++b; - - pkey = buffer_init(); - size_t len = (size_t)(e - b); - if (NULL == buffer_append_base64_decode(pkey, b, len, BASE64_STANDARD)) - break; - rc = 0; - } while (0); - - if (dlen) safe_memclear(data, dlen); - free(data); - - if (rc < 0) { - log_error(errh, __FILE__, __LINE__, "%s() %s", __func__, fn); - return NULL; - } - - return pkey; -} - - -static int -mod_wolfssl_CTX_use_certificate_chain_file (WOLFSSL_CTX *ssl_ctx, const char *fn, log_error_st *errh) -{ - /* (While it should be possible to parse DERs from (buffer **) - * s->pc->ssl_pemfile_chain, it is simpler to re-read file and use the - * built-in wolfSSL_CTX_use_certificate_chain_buffer() interface) */ - off_t dlen = 4*1024*1024;/*(arbitrary limit: 4 MB file; expect < 1 KB)*/ - char *data = fdevent_load_file(fn, &dlen, errh, malloc, free); - if (NULL == data) return -1; - - int rc = wolfSSL_CTX_use_certificate_chain_buffer(ssl_ctx, - (unsigned char *)data, - (long)dlen); - - if (dlen) safe_memclear(data, dlen); - free(data); - - if (rc == WOLFSSL_SUCCESS) - return 1; - - log_error(errh, __FILE__, __LINE__, - "SSL: %s %s", ERR_error_string(rc, NULL), fn); - return 0; -} - - -static STACK_OF(X509_NAME) * -mod_wolfssl_load_client_CA_file (const buffer *ssl_ca_file, log_error_st *errh) -{ - /* similar to wolfSSL_load_client_CA_file(), plus some processing */ - buffer **certs = NULL; - if (NULL == mod_wolfssl_load_pem_file(ssl_ca_file->ptr, errh, &certs)) { - #ifdef __clang_analyzer__ - mod_wolfssl_free_der_certs(certs); /*unnecessary; quiet clang analyzer*/ - #endif - return NULL; - } - - WOLF_STACK_OF(WOLFSSL_X509_NAME) *canames = wolfSSL_sk_X509_NAME_new(NULL); - if (NULL == canames) { - mod_wolfssl_free_der_certs(certs); - return NULL; - } - - for (int i = 0; NULL != certs[i]; ++i) { - WOLFSSL_X509 *ca = - wolfSSL_X509_load_certificate_buffer((unsigned char *)certs[i]->ptr, - (int) - buffer_string_length(certs[i]), - WOLFSSL_FILETYPE_ASN1); - WOLFSSL_X509_NAME *subj = NULL; - if (NULL == ca - || NULL == (subj = wolfSSL_X509_get_subject_name(ca)) - || 0 != wolfSSL_sk_X509_NAME_push(canames, - wolfSSL_X509_NAME_dup(subj))) { - log_error(errh, __FILE__, __LINE__, - "SSL: couldn't read X509 certificates from '%s'", - ssl_ca_file->ptr); - if (subj) wolfSSL_X509_NAME_free(subj); - if (ca) wolfSSL_X509_free(ca); - wolfSSL_sk_X509_NAME_free(canames); - mod_wolfssl_free_der_certs(certs); - return NULL; - } - - wolfSSL_X509_free(ca); - } - - mod_wolfssl_free_der_certs(certs); - return canames; -} - - -static plugin_cacerts * -mod_wolfssl_load_cacerts (const buffer *ssl_ca_file, log_error_st *errh) -{ - /* similar to mod_wolfSSL_load_client_CA_file(), plus some processing */ - /* similar to wolfSSL_load_client_CA_file(), plus some processing */ - buffer **certs = NULL; - if (NULL == mod_wolfssl_load_pem_file(ssl_ca_file->ptr, errh, &certs)) { - #ifdef __clang_analyzer__ - mod_wolfssl_free_der_certs(certs); /*unnecessary; quiet clang analyzer*/ - #endif - return NULL; - } - - WOLFSSL_X509_STORE *castore = wolfSSL_X509_STORE_new(); - if (NULL == castore) { - mod_wolfssl_free_der_certs(certs); - return NULL; - } - - WOLF_STACK_OF(WOLFSSL_X509_NAME) *canames = wolfSSL_sk_X509_NAME_new(NULL); - if (NULL == canames) { - wolfSSL_X509_STORE_free(castore); - mod_wolfssl_free_der_certs(certs); - return NULL; - } - - for (int i = 0; NULL != certs[i]; ++i) { - WOLFSSL_X509 *ca = - wolfSSL_X509_load_certificate_buffer((unsigned char *)certs[i]->ptr, - (int) - buffer_string_length(certs[i]), - WOLFSSL_FILETYPE_ASN1); - WOLFSSL_X509_NAME *subj = NULL; - if (NULL == ca || !wolfSSL_X509_STORE_add_cert(castore, ca) - || NULL == (subj = wolfSSL_X509_get_subject_name(ca)) - || 0 != wolfSSL_sk_X509_NAME_push(canames, - wolfSSL_X509_NAME_dup(subj))) { - log_error(errh, __FILE__, __LINE__, - "SSL: couldn't read X509 certificates from '%s'", - ssl_ca_file->ptr); - if (subj) wolfSSL_X509_NAME_free(subj); - if (ca) wolfSSL_X509_free(ca); - wolfSSL_sk_X509_NAME_free(canames); - wolfSSL_X509_STORE_free(castore); - mod_wolfssl_free_der_certs(certs); - return NULL; - } - - wolfSSL_X509_free(ca); - } - - mod_wolfssl_free_der_certs(certs); - - plugin_cacerts *cacerts = malloc(sizeof(plugin_cacerts)); - force_assert(cacerts); - - cacerts->names = canames; - cacerts->certs = castore; - return cacerts; -} - - -static int -mod_wolfssl_load_cacrls (WOLFSSL_CTX *ssl_ctx, const buffer *ssl_ca_crl_file, server *srv) -{ - #ifdef HAVE_CRL /* <wolfssl/options.h> */ - int rc = wolfSSL_CTX_EnableCRL(ssl_ctx, - WOLFSSL_CRL_CHECK | WOLFSSL_CRL_CHECKALL); - if (rc != WOLFSSL_SUCCESS) return 0; - - const char *fn = ssl_ca_crl_file->ptr; - off_t dlen = 512*1024*1024;/*(arbitrary limit: 512 MB file; expect < 1 MB)*/ - char *data = fdevent_load_file(fn, &dlen, srv->errh, malloc, free); - if (NULL == data) return 0; - - rc = wolfSSL_CTX_LoadCRLBuffer(ssl_ctx, (byte *)data, (long)dlen, - WOLFSSL_FILETYPE_PEM); - - if (dlen) safe_memclear(data, dlen); - free(data); - - if (rc == WOLFSSL_SUCCESS) - return 1; - - log_error(srv->errh, __FILE__, __LINE__, - "SSL: %s %s", ERR_error_string(rc, NULL), fn); - return 0; - #else - UNUSED(ssl_ctx); - log_error(srv->errh, __FILE__, __LINE__, - "WolfSSL not built with CRL support; ignoring %s", ssl_ca_crl_file->ptr); - return WOLFSSL_FAILURE; - #endif -} - - -static int -mod_wolfssl_load_verify_locn (SSL_CTX *ssl_ctx, const buffer *b, server *srv) -{ - const char *fn = b->ptr; - off_t dlen = 512*1024*1024;/*(arbitrary limit: 512 MB file; expect < 1 MB)*/ - char *data = fdevent_load_file(fn, &dlen, srv->errh, malloc, free); - if (NULL == data) return 0; - - int rc = wolfSSL_CTX_load_verify_buffer(ssl_ctx, (unsigned char *)data, - (long)dlen, WOLFSSL_FILETYPE_PEM); - - if (dlen) safe_memclear(data, dlen); - free(data); - - if (rc == WOLFSSL_SUCCESS) - return 1; - - log_error(srv->errh, __FILE__, __LINE__, - "SSL: %s %s", ERR_error_string(rc, NULL), fn); - return 0; -} - - -static int -mod_wolfssl_load_ca_files (SSL_CTX *ssl_ctx, plugin_data *p, server *srv) -{ - /* load all ssl.ca-files specified in the config into each SSL_CTX */ - - for (uint32_t i = 0, used = p->cafiles->used; i < used; ++i) { - const buffer *b = &((data_string *)p->cafiles->data[i])->value; - if (!mod_wolfssl_load_verify_locn(ssl_ctx, b, srv)) - return 0; - } - return 1; -} - - -#else /* !defined(WOLFSSL_VERSION) */ - - /* use memory from openssl secure heap for temporary buffers, returned storage * (pemfile might contain a private key in addition to certificate chain) * Interfaces similar to those constructed in include/openssl/pem.h for @@ -1122,26 +642,18 @@ PEM_ASN1_read_bio_secmem(d2i_of_void *d2i, const char *name, BIO *bp, void **x, static X509 * PEM_read_bio_X509_secmem(BIO *bp, X509 **x, pem_password_cb *cb, void *u) { - #ifdef WOLFSSL_VERSION /* WolfSSL limitation; does not wipe temp mem used */ - return wolfSSL_PEM_read_bio_X509(bp, x, cb, u); - #else return PEM_ASN1_read_bio_secmem((d2i_of_void *)d2i_X509, PEM_STRING_X509, bp, (void **)x, cb, u); - #endif } static X509 * PEM_read_bio_X509_AUX_secmem(BIO *bp, X509 **x, pem_password_cb *cb, void *u) { - #ifdef WOLFSSL_VERSION /* WolfSSL limitation; does not wipe temp mem used */ - return wolfSSL_PEM_read_bio_X509_AUX(bp, x, cb, u); - #else return PEM_ASN1_read_bio_secmem((d2i_of_void *)d2i_X509_AUX, PEM_STRING_X509_TRUSTED, bp, (void **)x, cb, u); - #endif } @@ -1278,9 +790,6 @@ mod_openssl_load_ca_files (SSL_CTX *ssl_ctx, plugin_data *p, server *srv) #endif -#endif /* !defined(WOLFSSL_VERSION) */ - - FREE_FUNC(mod_openssl_free) { plugin_data *p = p_d; @@ -1370,10 +879,6 @@ mod_openssl_patch_config (request_st * const r, plugin_config * const pconf) static int safer_X509_NAME_oneline(X509_NAME *name, char *buf, size_t sz) { - #ifdef WOLFSSL_VERSION - if (wolfSSL_X509_get_name_oneline(name, buf, (int)sz)) - return (int)strlen(buf); - #else BIO *bio = BIO_new(BIO_s_mem()); if (bio) { int len = X509_NAME_print_ex(bio, name, 0, XN_FLAG_ONELINE); @@ -1381,7 +886,6 @@ safer_X509_NAME_oneline(X509_NAME *name, char *buf, size_t sz) BIO_free(bio); return len; /*return value has similar semantics to that of snprintf()*/ } - #endif else { buf[0] = '\0'; return -1; @@ -1403,14 +907,7 @@ ssl_info_callback (const SSL *ssl, int where, int ret) * "TLSv1.3 unexpected InfoCallback after handshake completed" */ if (0 != (where & SSL_CB_HANDSHAKE_DONE)) { /* SSL_version() is valid after initial handshake completed */ - #ifdef WOLFSSL_VERSION - SSL *ssl_nonconst; - *(const SSL **)&ssl_nonconst = ssl; - if (wolfSSL_GetVersion(ssl_nonconst) >= WOLFSSL_TLSV1_3) - #else - if (SSL_version(ssl) >= TLS1_3_VERSION) - #endif - { + if (SSL_version(ssl) >= TLS1_3_VERSION) { /* https://wiki.openssl.org/index.php/TLS1.3 * "Renegotiation is not possible in a TLSv1.3 connection" */ handler_ctx *hctx = (handler_ctx *) SSL_get_app_data(ssl); @@ -1529,14 +1026,7 @@ mod_openssl_cert_cb (SSL *ssl, void *arg) /* first set certificate! * setting private key checks whether certificate matches it */ - #ifdef WOLFSSL_VERSION - buffer *cert = pc->ssl_pemfile_x509; - if (1 != wolfSSL_use_certificate_ASN1(ssl, (unsigned char *)cert->ptr, - (int)buffer_string_length(cert))) - #else - if (1 != SSL_use_certificate(ssl, pc->ssl_pemfile_x509)) - #endif - { + if (1 != SSL_use_certificate(ssl, pc->ssl_pemfile_x509)) { log_error(hctx->r->conf.errh, __FILE__, __LINE__, "SSL: failed to set certificate for TLS server name %s: %s", hctx->r->uri.authority.ptr, ERR_error_string(ERR_get_error(), NULL)); @@ -1575,15 +1065,7 @@ mod_openssl_cert_cb (SSL *ssl, void *arg) #endif #endif - #ifdef WOLFSSL_VERSION - buffer *pkey = pc->ssl_pemfile_pkey; - if (1 != wolfSSL_use_PrivateKey_buffer(ssl, (unsigned char *)pkey->ptr, - (int)buffer_string_length(pkey), - WOLFSSL_FILETYPE_ASN1)) - #else - if (1 != SSL_use_PrivateKey(ssl, pc->ssl_pemfile_pkey)) - #endif - { + if (1 != SSL_use_PrivateKey(ssl, pc->ssl_pemfile_pkey)) { log_error(hctx->r->conf.errh, __FILE__, __LINE__, "SSL: failed to set private key for TLS server name %s: %s", hctx->r->uri.authority.ptr, ERR_error_string(ERR_get_error(), NULL)); @@ -1618,14 +1100,12 @@ mod_openssl_cert_cb (SSL *ssl, void *arg) /* WTH openssl? SSL_set_client_CA_list() calls set0_CA_list(), * but there is no set1_CA_list() to simply up the reference count * (without needing to duplicate the list) */ - #ifndef WOLFSSL_VERSION /* WolfSSL limitation */ /* WolfSSL does not support setting per-session CA list; * limitation is to per-CTX CA list, and is not changed after SNI */ STACK_OF(X509_NAME) * const cert_names = hctx->conf.ssl_ca_dn_file ? hctx->conf.ssl_ca_dn_file : hctx->conf.ssl_ca_file->names; SSL_set_client_CA_list(ssl, SSL_dup_CA_list(cert_names)); - #endif int mode = SSL_VERIFY_PEER; if (hctx->conf.ssl_verifyclient_enforce) mode |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT; @@ -1718,18 +1198,10 @@ network_ssl_servername_callback (SSL *ssl, int *al, void *srv) UNUSED(al); UNUSED(srv); - #ifdef WOLFSSL_VERSION - const char *servername; - size_t len = (size_t) - wolfSSL_SNI_GetRequest(ssl, WOLFSSL_SNI_HOST_NAME, (void **)&servername); - if (0 == len) - return SSL_TLSEXT_ERR_NOACK; /* client did not provide SNI */ - #else const char *servername = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name); if (NULL == servername) return SSL_TLSEXT_ERR_NOACK; /* client did not provide SNI */ size_t len = strlen(servername); - #endif int read_ahead = hctx->conf.ssl_read_ahead; int rc = mod_openssl_SNI(hctx, servername, len); if (!read_ahead && hctx->conf.ssl_read_ahead) @@ -1740,7 +1212,6 @@ network_ssl_servername_callback (SSL *ssl, int *al, void *srv) #endif -#ifndef WOLFSSL_VERSION static X509 * mod_openssl_load_pem_file (const char *file, log_error_st *errh, STACK_OF(X509) **chain) { @@ -1774,10 +1245,8 @@ mod_openssl_load_pem_file (const char *file, log_error_st *errh, STACK_OF(X509) free(data); return x; } -#endif -#ifndef WOLFSSL_VERSION static EVP_PKEY * mod_openssl_evp_pkey_load_pem_file (const char *file, log_error_st *errh) { @@ -1802,19 +1271,10 @@ mod_openssl_evp_pkey_load_pem_file (const char *file, log_error_st *errh) return x; } -#endif #ifndef OPENSSL_NO_OCSP -#ifdef WOLFSSL_VERSION -#define OCSP_RESPONSE OcspResponse -#define OCSP_RESPONSE_free wolfSSL_OCSP_RESPONSE_free -#define d2i_OCSP_RESPONSE_bio wolfSSL_d2i_OCSP_RESPONSE_bio -#define d2i_OCSP_RESPONSE wolfSSL_d2i_OCSP_RESPONSE -#define i2d_OCSP_RESPONSE wolfSSL_i2d_OCSP_RESPONSE -#endif - static buffer * mod_openssl_load_stapling_file (const char *file, log_error_st *errh, buffer *b) { @@ -1839,8 +1299,7 @@ mod_openssl_load_stapling_file (const char *file, log_error_st *errh, buffer *b) char *data = fdevent_load_file(file, &dlen, errh, malloc, free); if (NULL == data) return NULL; - #if defined(BORINGSSL_API_VERSION) \ - || defined(WOLFSSL_VERSION) + #if defined(BORINGSSL_API_VERSION) if (NULL == b) b = buffer_init(); @@ -1887,7 +1346,7 @@ mod_openssl_load_stapling_file (const char *file, log_error_st *errh, buffer *b) } -#if !defined(BORINGSSL_API_VERSION) && !defined(WOLFSSL_VERSION) +#if !defined(BORINGSSL_API_VERSION) static time_t mod_openssl_asn1_time_to_posix (ASN1_TIME *asn1time) { @@ -1996,7 +1455,7 @@ mod_openssl_asn1_time_to_posix (ASN1_TIME *asn1time) static time_t mod_openssl_ocsp_next_update (plugin_cert *pc) { - #if defined(BORINGSSL_API_VERSION) || defined(WOLFSSL_VERSION) + #if defined(BORINGSSL_API_VERSION) UNUSED(pc); return (time_t)-1; /*(not implemented)*/ #else @@ -2012,31 +1471,7 @@ mod_openssl_ocsp_next_update (plugin_cert *pc) /* XXX: should save and evaluate cert status returned by these calls */ ASN1_TIME *nextupd = NULL; - #ifdef WOLFSSL_VERSION /* WolfSSL limitation */ - /* WolfSSL does not provide OCSP_resp_get0() OCSP_single_get0_status() */ - /* (inactive code path; alternative path followed in #if above for WolfSSL) - * (chain not currently available in mod_openssl when used with WolfSSL) - * (For WolfSSL, pc->ssl_pemfile_chain might not be filled in with actual - * chain, but is used to store (buffer **) of DER decoded from PEM certs - * read from ssl.pemfile, which may be a single cert, pc->ssl_pemfile_x509. - * The chain is not calculated or filled in if single cert, and neither are - * (X509 *), though (X509 *) could be temporarily created to calculated - * (OCSP_CERTID *), which additionally could be calculated once at startup) - */ - OCSP_CERTID *id = (NULL != pc->ssl_pemfile_chain) - ? OCSP_cert_to_id(NULL, pc->ssl_pemfile_x509, - sk_X509_value(pc->ssl_pemfile_chain, 0)) - : NULL; - if (id == NULL) { - OCSP_BASICRESP_free(bs); - OCSP_RESPONSE_free(ocsp); - return (time_t)-1; - } - OCSP_resp_find_status(bs, id, NULL, NULL, NULL, NULL, &nextupd); - OCSP_CERTID_free(id); - #else OCSP_single_get0_status(OCSP_resp_get0(bs, 0), NULL, NULL, NULL, &nextupd); - #endif time_t t = nextupd ? mod_openssl_asn1_time_to_posix(nextupd) : (time_t)-1; /* Note: trust external process which creates ssl.stapling-file to verify @@ -2155,23 +1590,6 @@ network_openssl_load_pemfile (server *srv, const buffer *pemfile, const buffer * { if (!mod_openssl_init_once_openssl(srv)) return NULL; - #ifdef WOLFSSL_VERSION - buffer **ssl_pemfile_chain = NULL; - buffer *ssl_pemfile_x509 = - mod_wolfssl_load_pem_file(pemfile->ptr, srv->errh, &ssl_pemfile_chain); - if (NULL == ssl_pemfile_x509) - return NULL; - - buffer *ssl_pemfile_pkey = - mod_wolfssl_evp_pkey_load_pem_file(privkey->ptr, srv->errh); - if (NULL == ssl_pemfile_pkey) { - /*buffer_free(ssl_pemfile_x509);*//*(part of chain)*/ - mod_wolfssl_free_der_certs(ssl_pemfile_chain); - return NULL; - } - - /* X509_check_private_key() is a stub func (not implemented) in WolfSSL */ - #else STACK_OF(X509) *ssl_pemfile_chain = NULL; X509 *ssl_pemfile_x509 = mod_openssl_load_pem_file(pemfile->ptr, srv->errh, &ssl_pemfile_chain); @@ -2196,7 +1614,6 @@ network_openssl_load_pemfile (server *srv, const buffer *pemfile, const buffer * sk_X509_pop_free(ssl_pemfile_chain, X509_free); return NULL; } - #endif plugin_cert *pc = malloc(sizeof(plugin_cert)); force_assert(pc); @@ -2210,14 +1627,7 @@ network_openssl_load_pemfile (server *srv, const buffer *pemfile, const buffer * pc->ssl_stapling_loadts = 0; pc->ssl_stapling_nextts = 0; #ifndef OPENSSL_NO_OCSP - #ifdef WOLFSSL_VERSION - /*(not implemented for WolfSSL, though could convert the DER to (X509 *), - * check Must-Staple, and then destroy (X509 *))*/ - (void)mod_openssl_crt_must_staple(NULL); - pc->must_staple = 0; - #else pc->must_staple = mod_openssl_crt_must_staple(ssl_pemfile_x509); - #endif #else pc->must_staple = 0; #endif @@ -2253,15 +1663,9 @@ mod_openssl_acme_tls_1 (SSL *ssl, handler_ctx *hctx) buffer * const b = hctx->tmp_buf; const buffer * const name = &hctx->r->uri.authority; log_error_st * const errh = hctx->r->conf.errh; - #ifdef WOLFSSL_VERSION - buffer *ssl_pemfile_x509 = NULL; - buffer *ssl_pemfile_pkey = NULL; - buffer **ssl_pemfile_chain = NULL; - #else X509 *ssl_pemfile_x509 = NULL; STACK_OF(X509) *ssl_pemfile_chain = NULL; EVP_PKEY *ssl_pemfile_pkey = NULL; - #endif size_t len; int rc = SSL_TLSEXT_ERR_ALERT_FATAL; @@ -2286,13 +1690,8 @@ mod_openssl_acme_tls_1 (SSL *ssl, handler_ctx *hctx) do { buffer_append_string_len(b, CONST_STR_LEN(".crt.pem")); - #ifdef WOLFSSL_VERSION - ssl_pemfile_x509 = - mod_wolfssl_load_pem_file(b->ptr, errh, &ssl_pemfile_chain); - #else ssl_pemfile_x509 = mod_openssl_load_pem_file(b->ptr, errh, &ssl_pemfile_chain); - #endif if (NULL == ssl_pemfile_x509) { log_error(errh, __FILE__, __LINE__, "SSL: Failed to load acme-tls/1 pemfile: %s", b->ptr); @@ -2301,11 +1700,7 @@ mod_openssl_acme_tls_1 (SSL *ssl, handler_ctx *hctx) buffer_string_set_length(b, len); /*(remove ".crt.pem")*/ buffer_append_string_len(b, CONST_STR_LEN(".key.pem")); - #ifdef WOLFSSL_VERSION - ssl_pemfile_pkey = mod_wolfssl_evp_pkey_load_pem_file(b->ptr, errh); - #else ssl_pemfile_pkey = mod_openssl_evp_pkey_load_pem_file(b->ptr, errh); - #endif if (NULL == ssl_pemfile_pkey) { log_error(errh, __FILE__, __LINE__, "SSL: Failed to load acme-tls/1 pemfile: %s", b->ptr); @@ -2324,14 +1719,7 @@ mod_openssl_acme_tls_1 (SSL *ssl, handler_ctx *hctx) /* first set certificate! * setting private key checks whether certificate matches it */ - #ifdef WOLFSSL_VERSION - buffer *cert = ssl_pemfile_x509; - if (1 != wolfSSL_use_certificate_ASN1(ssl, (unsigned char *)cert->ptr, - (int)buffer_string_length(cert))) - #else - if (1 != SSL_use_certificate(ssl, ssl_pemfile_x509)) - #endif - { + if (1 != SSL_use_certificate(ssl, ssl_pemfile_x509)) { log_error(errh, __FILE__, __LINE__, "SSL: failed to set acme-tls/1 certificate for TLS server " "name %s: %s", name->ptr, ERR_error_string(ERR_get_error(),NULL)); @@ -2339,24 +1727,11 @@ mod_openssl_acme_tls_1 (SSL *ssl, handler_ctx *hctx) } if (ssl_pemfile_chain) { - #ifndef WOLFSSL_VERSION /* WolfSSL limitation */ - /* WolfSSL does not support setting per-session chain; - * limitation is to per-CTX chain, and so chain is not provided for - * "acme-tls/1" (might be non-issue; chain might not be present) */ SSL_set0_chain(ssl, ssl_pemfile_chain); ssl_pemfile_chain = NULL; - #endif } - #ifdef WOLFSSL_VERSION - buffer *pkey = ssl_pemfile_pkey; - if (1 != wolfSSL_use_PrivateKey_buffer(ssl, (unsigned char *)pkey->ptr, - (int)buffer_string_length(pkey), - WOLFSSL_FILETYPE_ASN1)) - #else - if (1 != SSL_use_PrivateKey(ssl, ssl_pemfile_pkey)) - #endif - { + if (1 != SSL_use_PrivateKey(ssl, ssl_pemfile_pkey)) { log_error(errh, __FILE__, __LINE__, "SSL: failed to set acme-tls/1 private key for TLS server " "name %s: %s", name->ptr, ERR_error_string(ERR_get_error(),NULL)); @@ -2368,16 +1743,10 @@ mod_openssl_acme_tls_1 (SSL *ssl, handler_ctx *hctx) rc = SSL_TLSEXT_ERR_OK; } while (0); - #ifdef WOLFSSL_VERSION - if (ssl_pemfile_pkey) buffer_free(ssl_pemfile_pkey); - /*if (ssl_pemfile_x509) buffer_free(ssl_pemfile_x509);*//*(part of chain)*/ - mod_wolfssl_free_der_certs(ssl_pemfile_chain); - #else if (ssl_pemfile_pkey) EVP_PKEY_free(ssl_pemfile_pkey); if (ssl_pemfile_x509) X509_free(ssl_pemfile_x509); if (ssl_pemfile_chain) sk_X509_pop_free(ssl_pemfile_chain, X509_free); - #endif return rc; } @@ -2456,8 +1825,7 @@ mod_openssl_alpn_select_cb (SSL *ssl, const unsigned char **out, unsigned char * #if defined(BORINGSSL_API_VERSION) \ - || defined(LIBRESSL_VERSION_NUMBER) \ - || defined(WOLFSSL_VERSION) + || defined(LIBRESSL_VERSION_NUMBER) static int mod_openssl_ssl_conf_cmd (server *srv, plugin_config_socket *s); #endif @@ -2511,8 +1879,7 @@ network_openssl_ssl_conf_cmd (server *srv, plugin_config_socket *s) return rc; #elif defined(BORINGSSL_API_VERSION) \ - || defined(LIBRESSL_VERSION_NUMBER) \ - || defined(WOLFSSL_VERSION) + || defined(LIBRESSL_VERSION_NUMBER) return mod_openssl_ssl_conf_cmd(srv, s); @@ -2531,7 +1898,7 @@ network_openssl_ssl_conf_cmd (server *srv, plugin_config_socket *s) #if OPENSSL_VERSION_NUMBER < 0x10100000L \ || defined(LIBRESSL_VERSION_NUMBER) #define DH_set0_pqg(dh, dh_p, NULL, dh_g) \ - ((dh)->p = (dh_p), (dh)->g = (dh_g), (dh_p) != NULL && (dh_g != NULL)) + ((dh)->p = (dh_p), (dh)->g = (dh_g), (dh_p) != NULL && (dh_g) != NULL) #endif /* https://tools.ietf.org/html/rfc7919#appendix-A.1 * A.1. ffdhe2048 @@ -2656,8 +2023,7 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) | SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION | SSL_OP_NO_COMPRESSION; - #if OPENSSL_VERSION_NUMBER >= 0x10100000L \ - || defined(WOLFSSL_VERSION) + #if OPENSSL_VERSION_NUMBER >= 0x10100000L s->ssl_ctx = (!s->ssl_use_sslv2 && !s->ssl_use_sslv3) ? SSL_CTX_new(TLS_server_method()) : SSL_CTX_new(SSLv23_server_method()); @@ -2685,12 +2051,10 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) return -1; } - #if !defined(WOLFSSL_VERSION) || !defined(NO_SESSION_CACHE) /* disable session cache; session tickets are preferred */ SSL_CTX_set_session_cache_mode(s->ssl_ctx, SSL_SESS_CACHE_OFF | SSL_SESS_CACHE_NO_AUTO_CLEAR | SSL_SESS_CACHE_NO_INTERNAL); - #endif if (s->ssl_empty_fragments) { #ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS @@ -2706,7 +2070,6 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) SSL_CTX_set_options(s->ssl_ctx, ssloptions); SSL_CTX_set_info_callback(s->ssl_ctx, ssl_info_callback); - #ifndef HAVE_WOLFSSL_SSL_H /*(wolfSSL does not support SSLv2)*/ if (!s->ssl_use_sslv2 && 0 != SSL_OP_NO_SSLv2) { /* disable SSLv2 */ if ((SSL_OP_NO_SSLv2 @@ -2717,7 +2080,6 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) return -1; } } - #endif if (!s->ssl_use_sslv3 && 0 != SSL_OP_NO_SSLv3) { /* disable SSLv3 */ @@ -2752,25 +2114,6 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) { DH *dh; /* Support for Diffie-Hellman key exchange */ - #ifdef WOLFSSL_VERSION - if (!buffer_string_is_empty(s->ssl_dh_file)) { - const char *fn = s->ssl_dh_file->ptr; - off_t dlen = 1*1024*1024;/*(arbitrary limit: 1 MB; expect < 1 KB)*/ - char *data = fdevent_load_file(fn, &dlen, srv->errh, malloc, free); - int rc = (NULL != data) ? 0 : -1; - if (0 == rc) - wolfSSL_CTX_SetTmpDH_buffer(s->ssl_ctx, (unsigned char *)data, - (long)dlen, WOLFSSL_FILETYPE_PEM); - if (dlen) safe_memclear(data, dlen); - free(data); - if (rc < 0) { - log_error(srv->errh, __FILE__, __LINE__, - "SSL: Unable to read DH params from file %s", - s->ssl_dh_file->ptr); - return -1; - } - } - #else if (!buffer_string_is_empty(s->ssl_dh_file)) { /* DH parameters from file */ BIO *bio; @@ -2790,7 +2133,6 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) SSL_CTX_set_tmp_dh(s->ssl_ctx,dh); DH_free(dh); } - #endif else { dh = get_dh2048(); if (dh == NULL) { @@ -2846,11 +2188,7 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) * XXX: This might be a bit excessive, but are all trusted CAs * TODO: prefer to load on-demand in mod_openssl_cert_cb() * for openssl >= 1.0.2 */ - #ifdef WOLFSSL_VERSION - if (!mod_wolfssl_load_ca_files(s->ssl_ctx, p, srv)) - #else if (!mod_openssl_load_ca_files(s->ssl_ctx, p, srv)) - #endif return -1; if (s->ssl_verifyclient) { @@ -2874,15 +2212,6 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) if (s->ssl_verifyclient_enforce) { mode |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT; } - #ifdef WOLFSSL_VERSION - wolfSSL_CTX_set_verify(s->ssl_ctx, mode, verify_callback); - wolfSSL_CTX_set_verify_depth(s->ssl_ctx, - s->ssl_verifyclient_depth + 1); - if (!buffer_string_is_empty(s->ssl_ca_crl_file)) { - if (!mod_wolfssl_load_cacrls(s->ssl_ctx,s->ssl_ca_crl_file,srv)) - return -1; - } - #else SSL_CTX_set_verify(s->ssl_ctx, mode, verify_callback); SSL_CTX_set_verify_depth(s->ssl_ctx, s->ssl_verifyclient_depth + 1); if (!buffer_string_is_empty(s->ssl_ca_crl_file)) { @@ -2890,14 +2219,8 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) if (!mod_openssl_load_cacrls(store, s->ssl_ca_crl_file, srv)) return -1; } - #endif } - #ifdef WOLFSSL_VERSION - if (1 != mod_wolfssl_CTX_use_certificate_chain_file( - s->ssl_ctx, s->pc->ssl_pemfile->ptr, srv->errh)) - return -1; - #else if (1 != SSL_CTX_use_certificate_chain_file(s->ssl_ctx, s->pc->ssl_pemfile->ptr)) { log_error(srv->errh, __FILE__, __LINE__, @@ -2905,18 +2228,8 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) s->pc->ssl_pemfile->ptr); return -1; } - #endif - #ifdef WOLFSSL_VERSION - buffer *k = s->pc->ssl_pemfile_pkey; - if (1 != wolfSSL_CTX_use_PrivateKey_buffer(s->ssl_ctx, - (unsigned char *)k->ptr, - (int)buffer_string_length(k), - WOLFSSL_FILETYPE_ASN1)) - #else - if (1 != SSL_CTX_use_PrivateKey(s->ssl_ctx, s->pc->ssl_pemfile_pkey)) - #endif - { + if (1 != SSL_CTX_use_PrivateKey(s->ssl_ctx, s->pc->ssl_pemfile_pkey)) { log_error(srv->errh, __FILE__, __LINE__, "SSL: %s %s %s", ERR_error_string(ERR_get_error(), NULL), s->pc->ssl_pemfile->ptr, s->pc->ssl_privkey->ptr); @@ -2946,10 +2259,6 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) #ifndef OPENSSL_NO_TLSEXT #ifdef SSL_CLIENT_HELLO_SUCCESS SSL_CTX_set_client_hello_cb(s->ssl_ctx,mod_openssl_client_hello_cb,srv); - #elif defined(WOLFSSL_VERSION) - wolfSSL_CTX_set_servername_callback( - s->ssl_ctx, network_ssl_servername_callback); - wolfSSL_CTX_set_servername_arg(s->ssl_ctx, srv); #else if (!SSL_CTX_set_tlsext_servername_callback( s->ssl_ctx, network_ssl_servername_callback) || @@ -2972,11 +2281,6 @@ network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) if (!s->ssl_use_sslv3 && !s->ssl_use_sslv2 && !SSL_CTX_set_min_proto_version(s->ssl_ctx, TLS1_2_VERSION)) return -1; - #elif defined(WOLFSSL_VERSION) - if (!s->ssl_use_sslv3 && !s->ssl_use_sslv2 - && wolfSSL_CTX_SetMinVersion(s->ssl_ctx, WOLFSSL_TLSV1_2) - != WOLFSSL_SUCCESS) - return -1; #endif if (s->ssl_conf_cmd && s->ssl_conf_cmd->used) { @@ -3028,12 +2332,7 @@ mod_openssl_set_defaults_sockets(server *srv, plugin_data *p) T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET } }; - #ifdef WOLFSSL_VERSION /* WolfSSL does not have mapping for "HIGH" */ - /* cipher list is (current) output of "openssl ciphers HIGH" */ - static const buffer default_ssl_cipher_list = { CONST_STR_LEN("TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256:TLS_AES_128_CCM_SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-DSS-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-CCM8:ECDHE-ECDSA-AES256-CCM:DHE-RSA-AES256-CCM8:DHE-RSA-AES256-CCM:ECDHE-ECDSA-ARIA256-GCM-SHA384:ECDHE-ARIA256-GCM-SHA384:DHE-DSS-ARIA256-GCM-SHA384:DHE-RSA-ARIA256-GCM-SHA384:ADH-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-CCM8:ECDHE-ECDSA-AES128-CCM:DHE-RSA-AES128-CCM8:DHE-RSA-AES128-CCM:ECDHE-ECDSA-ARIA128-GCM-SHA256:ECDHE-ARIA128-GCM-SHA256:DHE-DSS-ARIA128-GCM-SHA256:DHE-RSA-ARIA128-GCM-SHA256:ADH-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:ECDHE-ECDSA-CAMELLIA256-SHA384:ECDHE-RSA-CAMELLIA256-SHA384:DHE-RSA-CAMELLIA256-SHA256:DHE-DSS-CAMELLIA256-SHA256:ADH-AES256-SHA256:ADH-CAMELLIA256-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA256:DHE-DSS-AES128-SHA256:ECDHE-ECDSA-CAMELLIA128-SHA256:ECDHE-RSA-CAMELLIA128-SHA256:DHE-RSA-CAMELLIA128-SHA256:DHE-DSS-CAMELLIA128-SHA256:ADH-AES128-SHA256:ADH-CAMELLIA128-SHA256:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:DHE-RSA-CAMELLIA256-SHA:DHE-DSS-CAMELLIA256-SHA:AECDH-AES256-SHA:ADH-AES256-SHA:ADH-CAMELLIA256-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-DSS-CAMELLIA128-SHA:AECDH-AES128-SHA:ADH-AES128-SHA:ADH-CAMELLIA128-SHA:RSA-PSK-AES256-GCM-SHA384:DHE-PSK-AES256-GCM-SHA384:RSA-PSK-CHACHA20-POLY1305:DHE-PSK-CHACHA20-POLY1305:ECDHE-PSK-CHACHA20-POLY1305:DHE-PSK-AES256-CCM8:DHE-PSK-AES256-CCM:RSA-PSK-ARIA256-GCM-SHA384:DHE-PSK-ARIA256-GCM-SHA384:AES256-GCM-SHA384:AES256-CCM8:AES256-CCM:ARIA256-GCM-SHA384:PSK-AES256-GCM-SHA384:PSK-CHACHA20-POLY1305:PSK-AES256-CCM8:PSK-AES256-CCM:PSK-ARIA256-GCM-SHA384:RSA-PSK-AES128-GCM-SHA256:DHE-PSK-AES128-GCM-SHA256:DHE-PSK-AES128-CCM8:DHE-PSK-AES128-CCM:RSA-PSK-ARIA128-GCM-SHA256:DHE-PSK-ARIA128-GCM-SHA256:AES128-GCM-SHA256:AES128-CCM8:AES128-CCM:ARIA128-GCM-SHA256:PSK-AES128-GCM-SHA256:PSK-AES128-CCM8:PSK-AES128-CCM:PSK-ARIA128-GCM-SHA256:AES256-SHA256:CAMELLIA256-SHA256:AES128-SHA256:CAMELLIA128-SHA256:ECDHE-PSK-AES256-CBC-SHA384:ECDHE-PSK-AES256-CBC-SHA:SRP-DSS-AES-256-CBC-SHA:SRP-RSA-AES-256-CBC-SHA:SRP-AES-256-CBC-SHA:RSA-PSK-AES256-CBC-SHA384:DHE-PSK-AES256-CBC-SHA384:RSA-PSK-AES256-CBC-SHA:DHE-PSK-AES256-CBC-SHA:ECDHE-PSK-CAMELLIA256-SHA384:RSA-PSK-CAMELLIA256-SHA384:DHE-PSK-CAMELLIA256-SHA384:AES256-SHA:CAMELLIA256-SHA:PSK-AES256-CBC-SHA384:PSK-AES256-CBC-SHA:PSK-CAMELLIA256-SHA384:ECDHE-PSK-AES128-CBC-SHA256:ECDHE-PSK-AES128-CBC-SHA:SRP-DSS-AES-128-CBC-SHA:SRP-RSA-AES-128-CBC-SHA:SRP-AES-128-CBC-SHA:RSA-PSK-AES128-CBC-SHA256:DHE-PSK-AES128-CBC-SHA256:RSA-PSK-AES128-CBC-SHA:DHE-PSK-AES128-CBC-SHA:ECDHE-PSK-CAMELLIA128-SHA256:RSA-PSK-CAMELLIA128-SHA256:DHE-PSK-CAMELLIA128-SHA256:AES128-SHA:CAMELLIA128-SHA:PSK-AES128-CBC-SHA256:PSK-AES128-CBC-SHA:PSK-CAMELLIA128-SHA256"), 0 }; - #else static const buffer default_ssl_cipher_list = { CONST_STR_LEN("HIGH"), 0 }; - #endif p->ssl_ctxs = calloc(srv->config_context->used, sizeof(plugin_ssl_ctx)); force_assert(p->ssl_ctxs); @@ -3337,11 +2636,7 @@ SETDEFAULTS_FUNC(mod_openssl_set_defaults) if (buffer_string_is_empty(cpv->v.b)) break; if (!mod_openssl_init_once_openssl(srv)) return HANDLER_ERROR; ssl_ca_file = cpv->v.b; - #ifdef WOLFSSL_VERSION - cpv->v.v = mod_wolfssl_load_cacerts(ssl_ca_file, srv->errh); - #else cpv->v.v = mod_openssl_load_cacerts(ssl_ca_file, srv->errh); - #endif if (NULL != cpv->v.v) { cpv->vtype = T_CONFIG_LOCAL; ca_store = ((plugin_cacerts *)cpv->v.v)->certs; @@ -3357,12 +2652,7 @@ SETDEFAULTS_FUNC(mod_openssl_set_defaults) if (buffer_string_is_empty(cpv->v.b)) break; if (!mod_openssl_init_once_openssl(srv)) return HANDLER_ERROR; ssl_ca_dn_file = cpv->v.b; - #ifdef WOLFSSL_VERSION - cpv->v.v = mod_wolfssl_load_client_CA_file(ssl_ca_dn_file, - srv->errh); - #else cpv->v.v = SSL_load_client_CA_file(ssl_ca_dn_file->ptr); - #endif if (NULL != cpv->v.v) { cpv->vtype = T_CONFIG_LOCAL; } @@ -4083,17 +3373,6 @@ https_add_ssl_client_entries (request_st * const r, handler_ctx * const hctx) } { - #ifdef WOLFSSL_VERSION - byte buf[64]; - int bsz = (int)sizeof(buf); - if (wolfSSL_X509_get_serial_number(xs, buf, &bsz) == WOLFSSL_SUCCESS) { - char serialHex[128+1]; - li_tohex_uc(serialHex, sizeof(serialHex), (char *)buf, (size_t)bsz); - http_header_env_set(r, - CONST_STR_LEN("SSL_CLIENT_M_SERIAL"), - serialHex, strlen(serialHex)); - } - #else ASN1_INTEGER *xsn = X509_get_serialNumber(xs); BIGNUM *serialBN = ASN1_INTEGER_to_BN(xsn, NULL); char *serialHex = BN_bn2hex(serialBN); @@ -4102,7 +3381,6 @@ https_add_ssl_client_entries (request_st * const r, handler_ctx * const hctx) serialHex, strlen(serialHex)); OPENSSL_free(serialHex); BN_free(serialBN); - #endif } if (!buffer_string_is_empty(hctx->conf.ssl_verifyclient_username)) { @@ -4124,19 +3402,6 @@ https_add_ssl_client_entries (request_st * const r, handler_ctx * const hctx) } if (hctx->conf.ssl_verifyclient_export_cert) { - #ifdef WOLFSSL_VERSION - int dersz, pemsz; - const unsigned char *der = wolfSSL_X509_get_der(xs, &dersz); - pemsz = der ? wc_DerToPemEx(der, dersz, NULL, 0, NULL, CERT_TYPE) : 0; - if (pemsz > 0) { - buffer_string_prepare_copy(tb, pemsz); - if (0 == wc_DerToPemEx(der, dersz, (byte *)tb->ptr, pemsz, - NULL, CERT_TYPE)) - http_header_env_set(r, - CONST_STR_LEN("SSL_CLIENT_CERT"), - tb->ptr, (uint32_t)pemsz); - } - #else BIO *bio; if (NULL != (bio = BIO_new(BIO_s_mem()))) { PEM_write_bio_X509(bio, xs); @@ -4150,7 +3415,6 @@ https_add_ssl_client_entries (request_st * const r, handler_ctx * const hctx) CONST_STR_LEN("SSL_CLIENT_CERT"), CONST_BUF_LEN(tb)); } - #endif } X509_free(xs); } @@ -4170,11 +3434,7 @@ http_cgi_ssl_env (request_st * const r, handler_ctx * const hctx) char buf[LI_ITOSTRING_LENGTH]; s = SSL_CIPHER_get_name(cipher); http_header_env_set(r, CONST_STR_LEN("SSL_CIPHER"), s, strlen(s)); - #ifdef WOLFSSL_VERSION - usekeysize = wolfSSL_CIPHER_get_bits(cipher, &algkeysize); - #else usekeysize = SSL_CIPHER_get_bits(cipher, &algkeysize); - #endif if (0 == algkeysize) algkeysize = usekeysize; http_header_env_set(r, CONST_STR_LEN("SSL_CIPHER_USEKEYSIZE"), buf, li_itostrn(buf, sizeof(buf), usekeysize)); @@ -4273,8 +3533,7 @@ int mod_openssl_plugin_init (plugin *p) #if defined(BORINGSSL_API_VERSION) \ - || defined(LIBRESSL_VERSION_NUMBER) \ - || defined(WOLFSSL_VERSION) + || defined(LIBRESSL_VERSION_NUMBER) static int mod_openssl_ssl_conf_proto_val (server *srv, plugin_config_socket *s, const buffer *b, int max) @@ -4428,30 +3687,14 @@ mod_openssl_ssl_conf_cmd (server *srv, plugin_config_socket *s) if (minb) { int n = mod_openssl_ssl_conf_proto_val(srv, s, minb, 0); - #ifndef WOLFSSL_VERSION if (!SSL_CTX_set_min_proto_version(s->ssl_ctx, n)) rc = -1; - #else - /*(wolfSSL_CTX_SetMinVersion() alt uses enums with different values)*/ - switch (n) { - case SSL3_VERSION: n = WOLFSSL_SSLV3; break; - case TLS1_VERSION: n = WOLFSSL_TLSV1; break; - case TLS1_1_VERSION: n = WOLFSSL_TLSV1_1; break; - case TLS1_2_VERSION: n = WOLFSSL_TLSV1_2; break; - case TLS1_3_VERSION: n = WOLFSSL_TLSV1_3; break; - default: rc = -1; break; - } - if (wolfSSL_CTX_SetMinVersion(s->ssl_ctx, n) != WOLFSSL_SUCCESS) - rc = -1; - #endif } if (maxb) { - #ifndef WOLFSSL_VERSION /*WolfSSL max ver is set at WolfSSL compile-time*/ int x = mod_openssl_ssl_conf_proto_val(srv, s, maxb, 1); if (!SSL_CTX_set_max_proto_version(s->ssl_ctx, x)) rc = -1; - #endif } if (cipherstring) { @@ -4476,4 +3719,4 @@ mod_openssl_ssl_conf_cmd (server *srv, plugin_config_socket *s) return rc; } -#endif /* BORINGSSL_API_VERSION || LIBRESSL_VERSION_NUMBER || WOLFSSL_VERSION */ +#endif /* BORINGSSL_API_VERSION || LIBRESSL_VERSION_NUMBER */ diff --git a/src/mod_wolfssl.c b/src/mod_wolfssl.c new file mode 100644 index 00000000..7106ab19 --- /dev/null +++ b/src/mod_wolfssl.c @@ -0,0 +1,3447 @@ +/* + * mod_wolfssl - wolfSSL support for lighttpd + * + * Copyright(c) 2020 Glenn Strauss gstrauss()gluelogic.com All rights reserved + * License: BSD 3-clause (same as lighttpd) + */ +/* + * Note: If session tickets are -not- disabled with + * ssl.openssl.ssl-conf-cmd = ("Options" => "-SessionTicket") + * mod_wolfssl rotates server ticket encryption key (STEK) every 8 hours + * and keeps the prior two STEKs around, so ticket lifetime is 24 hours. + * This is fine for use with a single lighttpd instance, but with multiple + * lighttpd workers, no coordinated STEK (server ticket encryption key) + * rotation occurs unless ssl.stek-file is defined and maintained (preferred), + * or if some external job restarts lighttpd. Restarting lighttpd generates a + * new key that is shared by lighttpd workers for the lifetime of the new key. + * If the rotation period expires and lighttpd has not been restarted, and if + * ssl.stek-file is not in use, then lighttpd workers will generate new + * independent keys, making session tickets less effective for session + * resumption, since clients have a lower chance for future connections to + * reach the same lighttpd worker. However, things will still work, and a new + * session will be created if session resumption fails. Admins should plan to + * restart lighttpd at least every 8 hours if session tickets are enabled and + * multiple lighttpd workers are configured. Since that is likely disruptive, + * if multiple lighttpd workers are configured, ssl.stek-file should be + * defined and the file maintained externally. + */ +#include "first.h" + +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> +#include <fcntl.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +/* + * Note: mod_wolfssl.c is forked from mod_openssl.c + * Many internal symbol names in mod_wolfssl.c retain the mod_openssl_* prefix + * (wolfSSL provides an OpenSSL compatibility layer) + */ + +#include "sys-crypto.h" +#include <wolfssl/options.h> + +/* WolfSSL defines OPENSSL_VERSION_NUMBER 0x10001040L for OPENSSL_ALL + * or HAVE_LIGHTY. WolfSSL does not provide many interfaces added in + * OpenSSL 1.0.2, including SSL_CTX_set_cert_cb(), so it is curious that + * WolfSSL defines OPENSSL_VERSION_NUMBER 0x10100000L for WOLFSSL_APACHE_HTTPD*/ +#ifndef OPENSSL_EXTRA +#define OPENSSL_EXTRA +#endif +#ifndef OPENSSL_ALL +#define OPENSSL_ALL +#endif +#include <wolfssl/ssl.h> + +static char global_err_buf[WOLFSSL_MAX_ERROR_SZ]; +#undef ERR_error_string +#define ERR_error_string(e,b) \ + (wolfSSL_ERR_error_string_n((e),global_err_buf,WOLFSSL_MAX_ERROR_SZ), \ + global_err_buf) +/* WolfSSL does not provide OPENSSL_cleanse() */ +#define OPENSSL_cleanse(x,sz) safe_memclear((x),(sz)) + +#if 0 /* symbols and definitions requires WolfSSL built with -DOPENSSL_EXTRA */ +#define SSL_TLSEXT_ERR_OK 0 +#define SSL_TLSEXT_ERR_ALERT_FATAL alert_fatal +#define SSL_TLSEXT_ERR_NOACK alert_warning + +WOLFSSL_API void wolfSSL_set_verify_depth(WOLFSSL *ssl,int depth); + +WOLFSSL_API void wolfSSL_X509_NAME_free(WOLFSSL_X509_NAME* name); +WOLFSSL_API int wolfSSL_X509_NAME_cmp(const WOLFSSL_X509_NAME* x, const WOLFSSL_X509_NAME* y); +WOLFSSL_API WOLFSSL_X509_NAME* wolfSSL_X509_NAME_dup(WOLFSSL_X509_NAME*); +WOLFSSL_API char* wolfSSL_X509_get_name_oneline(WOLFSSL_X509_NAME*, char*, int); + +WOLFSSL_API const char* wolfSSL_OBJ_nid2sn(int n); +WOLFSSL_API int wolfSSL_OBJ_obj2nid(const WOLFSSL_ASN1_OBJECT *o); +WOLFSSL_API WOLFSSL_ASN1_OBJECT * wolfSSL_X509_NAME_ENTRY_get_object(WOLFSSL_X509_NAME_ENTRY *ne); +WOLFSSL_API WOLFSSL_X509_NAME_ENTRY *wolfSSL_X509_NAME_get_entry(WOLFSSL_X509_NAME *name, int loc); +#endif + +#if 0 /* symbols and definitions requires WolfSSL built with -DOPENSSL_ALL */ +WOLFSSL_API WOLF_STACK_OF(WOLFSSL_X509_NAME) *wolfSSL_dup_CA_list( WOLF_STACK_OF(WOLFSSL_X509_NAME) *sk ); +/*wolfSSL_sk_X509_NAME_new()*/ +/*wolfSSL_sk_X509_NAME_push()*/ +#endif + +#include "base.h" +#include "fdevent.h" +#include "http_header.h" +#include "http_kv.h" +#include "log.h" +#include "plugin.h" +#include "safe_memclear.h" + +typedef struct { + /* SNI per host: with COMP_SERVER_SOCKET, COMP_HTTP_SCHEME, COMP_HTTP_HOST */ + buffer *ssl_pemfile_pkey; + buffer *ssl_pemfile_x509; + buffer **ssl_pemfile_chain; + buffer *ssl_stapling; + const buffer *ssl_pemfile; + const buffer *ssl_privkey; + const buffer *ssl_stapling_file; + time_t ssl_stapling_loadts; + time_t ssl_stapling_nextts; + char must_staple; +} plugin_cert; + +typedef struct { + WOLFSSL_CTX *ssl_ctx; +} plugin_ssl_ctx; + +typedef struct { + STACK_OF(X509_NAME) *names; + X509_STORE *certs; +} plugin_cacerts; + +typedef struct { + WOLFSSL_CTX *ssl_ctx; /* output from network_init_ssl() */ + + /*(used only during startup; not patched)*/ + unsigned char ssl_enabled; /* only interesting for setting up listening sockets. don't use at runtime */ + unsigned char ssl_honor_cipher_order; /* determine SSL cipher in server-preferred order, not client-order */ + unsigned char ssl_empty_fragments; /* whether to not set SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS */ + unsigned char ssl_use_sslv2; + unsigned char ssl_use_sslv3; + const buffer *ssl_cipher_list; + const buffer *ssl_dh_file; + const buffer *ssl_ec_curve; + array *ssl_conf_cmd; + + /*(copied from plugin_data for socket ssl_ctx config)*/ + const plugin_cert *pc; + const plugin_cacerts *ssl_ca_file; + STACK_OF(X509_NAME) *ssl_ca_dn_file; + const buffer *ssl_ca_crl_file; + unsigned char ssl_verifyclient; + unsigned char ssl_verifyclient_enforce; + unsigned char ssl_verifyclient_depth; + unsigned char ssl_read_ahead; + unsigned char ssl_disable_client_renegotiation; +} plugin_config_socket; /*(used at startup during configuration)*/ + +typedef struct { + /* SNI per host: w/ COMP_SERVER_SOCKET, COMP_HTTP_SCHEME, COMP_HTTP_HOST */ + plugin_cert *pc; + const plugin_cacerts *ssl_ca_file; + STACK_OF(X509_NAME) *ssl_ca_dn_file; + const buffer *ssl_ca_crl_file; + + unsigned char ssl_verifyclient; + unsigned char ssl_verifyclient_enforce; + unsigned char ssl_verifyclient_depth; + unsigned char ssl_verifyclient_export_cert; + unsigned char ssl_read_ahead; + unsigned char ssl_log_noise; + unsigned char ssl_disable_client_renegotiation; + const buffer *ssl_verifyclient_username; + const buffer *ssl_acme_tls_1; +} plugin_config; + +typedef struct { + PLUGIN_DATA; + plugin_ssl_ctx *ssl_ctxs; + plugin_config defaults; + server *srv; + array *cafiles; + const char *ssl_stek_file; +} plugin_data; + +static int ssl_is_init; +/* need assigned p->id for deep access of module handler_ctx for connection + * i.e. handler_ctx *hctx = con->plugin_ctx[plugin_data_singleton->id]; */ +static plugin_data *plugin_data_singleton; +#define LOCAL_SEND_BUFSIZE (16 * 1024) +static char *local_send_buffer; + +typedef struct { + WOLFSSL *ssl; + request_st *r; + connection *con; + short renegotiations; /* count of SSL_CB_HANDSHAKE_START */ + short close_notify; + unsigned short alpn; + plugin_config conf; + buffer *tmp_buf; + log_error_st *errh; +} handler_ctx; + + +static handler_ctx * +handler_ctx_init (void) +{ + handler_ctx *hctx = calloc(1, sizeof(*hctx)); + force_assert(hctx); + return hctx; +} + + +static void +handler_ctx_free (handler_ctx *hctx) +{ + if (hctx->ssl) SSL_free(hctx->ssl); + free(hctx); +} + + +#ifdef HAVE_SESSION_TICKET +/* ssl/ssl_local.h */ +#define TLSEXT_KEYNAME_LENGTH 16 +#define TLSEXT_TICK_KEY_LENGTH 32 + +/* openssl has a huge number of interfaces, but not the most useful; + * construct our own session ticket encryption key structure */ +typedef struct tlsext_ticket_key_st { + time_t active_ts; /* tickets not issued w/ key until activation timestamp */ + time_t expire_ts; /* key not valid after expiration timestamp */ + unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH]; + unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH]; + unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH]; +} tlsext_ticket_key_t; + +static tlsext_ticket_key_t session_ticket_keys[4]; +static time_t stek_rotate_ts; + + +static int +mod_openssl_session_ticket_key_generate (time_t active_ts, time_t expire_ts) +{ + /* openssl RAND_*bytes() functions are called multiple times since the + * funcs might have a 32-byte limit on number of bytes returned each call + * + * (Note: session ticket encryption key generation is not expected to fail) + * + * 3 keys are stored in session_ticket_keys[] + * The 4th element of session_ticket_keys[] is used for STEK construction + */ + /*(RAND_priv_bytes() not in openssl 1.1.0; introduced in openssl 1.1.1)*/ + #define RAND_priv_bytes(x,sz) RAND_bytes((x),(sz)) + if (RAND_bytes(session_ticket_keys[3].tick_key_name, + TLSEXT_KEYNAME_LENGTH) <= 0 + || RAND_priv_bytes(session_ticket_keys[3].tick_hmac_key, + TLSEXT_TICK_KEY_LENGTH) <= 0 + || RAND_priv_bytes(session_ticket_keys[3].tick_aes_key, + TLSEXT_TICK_KEY_LENGTH) <= 0) + return 0; + session_ticket_keys[3].active_ts = active_ts; + session_ticket_keys[3].expire_ts = expire_ts; + return 1; +} + + +static void +mod_openssl_session_ticket_key_rotate (void) +{ + /* discard oldest key (session_ticket_keys[2]) and put newest key first + * 3 keys are stored in session_ticket_keys[0], [1], [2] + * session_ticket_keys[3] is used to construct and pass new STEK */ + + session_ticket_keys[2] = session_ticket_keys[1]; + session_ticket_keys[1] = session_ticket_keys[0]; + /*memmove(session_ticket_keys+1, + session_ticket_keys+0, sizeof(tlsext_ticket_key_t)*2);*/ + session_ticket_keys[0] = session_ticket_keys[3]; + + OPENSSL_cleanse(session_ticket_keys+3, sizeof(tlsext_ticket_key_t)); +} + + +static tlsext_ticket_key_t * +tlsext_ticket_key_get (void) +{ + const time_t cur_ts = log_epoch_secs; + const int e = sizeof(session_ticket_keys)/sizeof(*session_ticket_keys) - 1; + for (int i = 0; i < e; ++i) { + if (session_ticket_keys[i].active_ts > cur_ts) continue; + if (session_ticket_keys[i].expire_ts < cur_ts) continue; + return &session_ticket_keys[i]; + } + return NULL; +} + + +static tlsext_ticket_key_t * +tlsext_ticket_key_find (unsigned char key_name[16], int *refresh) +{ + *refresh = 0; + const time_t cur_ts = log_epoch_secs; + const int e = sizeof(session_ticket_keys)/sizeof(*session_ticket_keys) - 1; + for (int i = 0; i < e; ++i) { + if (session_ticket_keys[i].expire_ts < cur_ts) continue; + if (0 == memcmp(session_ticket_keys[i].tick_key_name, key_name, 16)) + return &session_ticket_keys[i]; + if (session_ticket_keys[i].active_ts <= cur_ts) + *refresh = 1; /* newer active key is available */ + } + return NULL; +} + + +static void +tlsext_ticket_wipe_expired (const time_t cur_ts) +{ + const int e = sizeof(session_ticket_keys)/sizeof(*session_ticket_keys) - 1; + for (int i = 0; i < e; ++i) { + if (session_ticket_keys[i].expire_ts != 0 + && session_ticket_keys[i].expire_ts < cur_ts) + OPENSSL_cleanse(session_ticket_keys+i, sizeof(tlsext_ticket_key_t)); + } +} + + +/* based on reference implementation from openssl 1.1.1g man page + * man SSL_CTX_set_tlsext_ticket_key_cb + * but openssl code uses EVP_aes_256_cbc() instead of EVP_aes_128_cbc() + */ +static int +ssl_tlsext_ticket_key_cb (SSL *s, unsigned char key_name[16], + unsigned char iv[EVP_MAX_IV_LENGTH], + EVP_CIPHER_CTX *ctx, HMAC_CTX *hctx, int enc) +{ + UNUSED(s); + if (enc) { /* create new session */ + tlsext_ticket_key_t *k = tlsext_ticket_key_get(); + if (NULL == k) + return 0; /* current key does not exist or is not valid */ + memcpy(key_name, k->tick_key_name, 16); + if (RAND_bytes(iv, EVP_MAX_IV_LENGTH) <= 0) + return -1; /* insufficient random */ + EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, k->tick_aes_key, iv); + HMAC_Init_ex(hctx, k->tick_hmac_key, sizeof(k->tick_hmac_key), + EVP_sha256(), NULL); + return 1; + } + else { /* retrieve session */ + int refresh; + tlsext_ticket_key_t *k = tlsext_ticket_key_find(key_name, &refresh); + if (NULL == k) + return 0; + HMAC_Init_ex(hctx, k->tick_hmac_key, sizeof(k->tick_hmac_key), + EVP_sha256(), NULL); + EVP_DecryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, k->tick_aes_key, iv); + return refresh ? 2 : 1; + /* 'refresh' will trigger issuing new ticket for session + * even though the current ticket is still valid */ + } +} + + +static int +mod_openssl_session_ticket_key_file (const char *fn) +{ + /* session ticket encryption key (STEK) + * + * STEK file should be stored in non-persistent storage, + * e.g. /dev/shm/lighttpd/stek-file (in memory) + * with appropriate permissions set to keep stek-file from being + * read by other users. Where possible, systems should also be + * configured without swap. + * + * admin should schedule an independent job to periodically + * generate new STEK up to 3 times during key lifetime + * (lighttpd stores up to 3 keys) + * + * format of binary file is: + * 4-byte - format version (always 0; for use if format changes) + * 4-byte - activation timestamp + * 4-byte - expiration timestamp + * 16-byte - session ticket key name + * 32-byte - session ticket HMAC encrpytion key + * 32-byte - session ticket AES encrpytion key + * + * STEK file can be created with a command such as: + * dd if=/dev/random bs=1 count=80 status=none | \ + * perl -e 'print pack("iii",0,time()+300,time()+86400),<>' \ + * > STEK-file.$$ && mv STEK-file.$$ STEK-file + * + * The above delays activation time by 5 mins (+300 sec) to allow file to + * be propagated to other machines. (admin must handle this independently) + * If STEK generation is performed immediately prior to starting lighttpd, + * admin should activate keys immediately (without +300). + */ + int buf[23]; /* 92 bytes */ + int fd = fdevent_open_cloexec(fn, 1, O_RDONLY, 0); + if (fd < 0) + return 0; + + ssize_t rd = read(fd, buf, sizeof(buf)); + close(fd); + + int rc = 0; /*(will retry on next check interval upon any error)*/ + if (rd == sizeof(buf) && buf[0] == 0) { /*(format version 0)*/ + session_ticket_keys[3].active_ts = buf[1]; + session_ticket_keys[3].expire_ts = buf[2]; + #ifndef __COVERITY__ /* intentional; hide from Coverity Scan */ + /* intentionally copy 80 bytes into consecutive arrays + * tick_key_name[], tick_hmac_key[], tick_aes_key[] */ + memcpy(&session_ticket_keys[3].tick_key_name, buf+3, 80); + #endif + rc = 1; + } + + OPENSSL_cleanse(buf, sizeof(buf)); + return rc; +} + + +static void +mod_openssl_session_ticket_key_check (const plugin_data *p, const time_t cur_ts) +{ + int rotate = 0; + if (p->ssl_stek_file) { + struct stat st; + if (0 == stat(p->ssl_stek_file, &st) && st.st_mtime > stek_rotate_ts) + rotate = mod_openssl_session_ticket_key_file(p->ssl_stek_file); + tlsext_ticket_wipe_expired(cur_ts); + } + else if (cur_ts - 28800 >= stek_rotate_ts) /*(8 hours)*/ + rotate = mod_openssl_session_ticket_key_generate(cur_ts, cur_ts+86400); + + if (rotate) { + mod_openssl_session_ticket_key_rotate(); + stek_rotate_ts = cur_ts; + } +} + +#endif /* HAVE_SESSION_TICKET */ + + +#ifndef OPENSSL_NO_OCSP +static int +ssl_tlsext_status_cb(SSL *ssl, void *arg) +{ + #ifdef SSL_get_tlsext_status_type + if (TLSEXT_STATUSTYPE_ocsp != SSL_get_tlsext_status_type(ssl)) + return SSL_TLSEXT_ERR_NOACK; /* ignore if not client OCSP request */ + #endif + + handler_ctx *hctx = (handler_ctx *) SSL_get_app_data(ssl); + buffer *ssl_stapling = hctx->conf.pc->ssl_stapling; + if (NULL == ssl_stapling) return SSL_TLSEXT_ERR_NOACK; + UNUSED(arg); + + int len = (int)buffer_string_length(ssl_stapling); + + /* WolfSSL does not require copy */ + uint8_t *ocsp_resp = (uint8_t *)ssl_stapling->ptr; + + if (!SSL_set_tlsext_status_ocsp_resp(ssl, ocsp_resp, len)) { + log_error(hctx->r->conf.errh, __FILE__, __LINE__, + "SSL: failed to set OCSP response for TLS server name %s: %s", + hctx->r->uri.authority.ptr, ERR_error_string(ERR_get_error(), NULL)); + return SSL_TLSEXT_ERR_NOACK; /* ignore OCSP request if error occurs */ + /*return SSL_TLSEXT_ERR_ALERT_FATAL;*/ + } + return SSL_TLSEXT_ERR_OK; +} +#endif + + +INIT_FUNC(mod_openssl_init) +{ + plugin_data_singleton = (plugin_data *)calloc(1, sizeof(plugin_data)); + #ifdef DEBUG_WOLFSSL + wolfSSL_Debugging_ON(); + #endif + return plugin_data_singleton; +} + + +static int mod_openssl_init_once_openssl (server *srv) +{ + if (ssl_is_init) return 1; + + if (wolfSSL_Init() != WOLFSSL_SUCCESS) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: wolfSSL_Init() failed"); + return 0; + } + ssl_is_init = 1; + + if (0 == RAND_status()) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: not enough entropy in the pool"); + return 0; + } + + local_send_buffer = malloc(LOCAL_SEND_BUFSIZE); + force_assert(NULL != local_send_buffer); + + return 1; +} + + +static void mod_openssl_free_openssl (void) +{ + if (!ssl_is_init) return; + + #ifdef HAVE_SESSION_TICKET + OPENSSL_cleanse(session_ticket_keys, sizeof(session_ticket_keys)); + stek_rotate_ts = 0; + #endif + + if (wolfSSL_Cleanup() != WOLFSSL_SUCCESS) { + log_error(plugin_data_singleton->srv->errh, __FILE__, __LINE__, + "SSL: wolfSSL_Cleanup() failed"); + } + + free(local_send_buffer); + ssl_is_init = 0; +} + + +static void +mod_wolfssl_free_der_certs (buffer **certs) +{ + if (NULL == certs) return; + for (int i = 0; NULL != certs[i]; ++i) + buffer_free(certs[i]); + free(certs); +} + + +static void +mod_openssl_free_config (server *srv, plugin_data * const p) +{ + array_free(p->cafiles); + + if (NULL != p->ssl_ctxs) { + SSL_CTX * const ssl_ctx_global_scope = p->ssl_ctxs->ssl_ctx; + /* free ssl_ctx from $SERVER["socket"] (if not copy of global scope) */ + for (uint32_t i = 1; i < srv->config_context->used; ++i) { + plugin_ssl_ctx * const s = p->ssl_ctxs + i; + if (s->ssl_ctx && s->ssl_ctx != ssl_ctx_global_scope) + SSL_CTX_free(s->ssl_ctx); + } + /* free ssl_ctx from global scope */ + if (ssl_ctx_global_scope) + SSL_CTX_free(ssl_ctx_global_scope); + free(p->ssl_ctxs); + } + + if (NULL == p->cvlist) return; + /* (init i to 0 if global context; to 1 to skip empty global context) */ + for (int i = !p->cvlist[0].v.u2[1], used = p->nconfig; i < used; ++i) { + config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0]; + for (; -1 != cpv->k_id; ++cpv) { + switch (cpv->k_id) { + case 0: /* ssl.pemfile */ + if (cpv->vtype == T_CONFIG_LOCAL) { + plugin_cert *pc = cpv->v.v; + buffer_free(pc->ssl_pemfile_pkey); + /*buffer_free(pc->ssl_pemfile_x509);*//*(part of chain)*/ + mod_wolfssl_free_der_certs(pc->ssl_pemfile_chain); + buffer_free(pc->ssl_stapling); + } + break; + case 2: /* ssl.ca-file */ + if (cpv->vtype == T_CONFIG_LOCAL) { + plugin_cacerts *cacerts = cpv->v.v; + sk_X509_NAME_pop_free(cacerts->names, X509_NAME_free); + X509_STORE_free(cacerts->certs); + free(cacerts); + } + break; + case 3: /* ssl.ca-dn-file */ + if (cpv->vtype == T_CONFIG_LOCAL) + sk_X509_NAME_pop_free(cpv->v.v, X509_NAME_free); + break; + default: + break; + } + } + } +} + + +/* WolfSSL OpenSSL compat API does not wipe temp mem used; write our own */ +/* (pemfile might contain private key)*/ +/* code here is based on similar code in mod_nss */ +#include "base64.h" + +#define PEM_BEGIN "-----BEGIN " +#define PEM_END "-----END " +#define PEM_BEGIN_CERT "-----BEGIN CERTIFICATE-----" +#define PEM_END_CERT "-----END CERTIFICATE-----" +#define PEM_BEGIN_TRUSTED_CERT "-----BEGIN TRUSTED CERTIFICATE-----" +#define PEM_END_TRUSTED_CERT "-----END TRUSTED CERTIFICATE-----" +#define PEM_BEGIN_PKEY "-----BEGIN PRIVATE KEY-----" +#define PEM_END_PKEY "-----END PRIVATE KEY-----" +#define PEM_BEGIN_EC_PKEY "-----BEGIN EC PRIVATE KEY-----" +#define PEM_END_EC_PKEY "-----END EC PRIVATE KEY-----" +#define PEM_BEGIN_RSA_PKEY "-----BEGIN RSA PRIVATE KEY-----" +#define PEM_END_RSA_PKEY "-----END RSA PRIVATE KEY-----" +#define PEM_BEGIN_DSA_PKEY "-----BEGIN DSA PRIVATE KEY-----" +#define PEM_END_DSA_PKEY "-----END DSA PRIVATE KEY-----" +#define PEM_BEGIN_ANY_PKEY "-----BEGIN ANY PRIVATE KEY-----" +#define PEM_END_ANY_PKEY "-----END ANY PRIVATE KEY-----" +/* (not implemented: support to get password from user for encrypted key) */ +#define PEM_BEGIN_ENCRYPTED_PKEY "-----BEGIN ENCRYPTED PRIVATE KEY-----" +#define PEM_END_ENCRYPTED_PKEY "-----END ENCRYPTED PRIVATE KEY-----" + +#define PEM_BEGIN_X509_CRL "-----BEGIN X509 CRL-----" +#define PEM_END_X509_CRL "-----END X509 CRL-----" + + +static buffer * +mod_wolfssl_load_pem_file (const char *fn, log_error_st *errh, buffer ***chain) +{ + off_t dlen = 512*1024*1024;/*(arbitrary limit: 512 MB file; expect < 1 MB)*/ + char *data = fdevent_load_file(fn, &dlen, errh, malloc, free); + if (NULL == data) return NULL; + + buffer **certs = NULL; + int rc = -1; + do { + int count = 0; + char *b = data; + for (; (b = strstr(b, PEM_BEGIN_CERT)); b += sizeof(PEM_BEGIN_CERT)-1) + ++count; + b = data; + for (; (b = strstr(b, PEM_BEGIN_TRUSTED_CERT)); + b += sizeof(PEM_BEGIN_TRUSTED_CERT)-1) + ++count; + if (0 == count) { + rc = 0; + break; + } + + certs = malloc((count+1) * sizeof(buffer *)); + force_assert(NULL != certs); + certs[count] = NULL; + for (int i = 0; i < count; ++i) + certs[i] = buffer_init(); + + buffer *der; + int i = 0; + for (char *e = data; (b = strstr(e, PEM_BEGIN_CERT)); ++i) { + b += sizeof(PEM_BEGIN_CERT)-1; + if (*b == '\r') ++b; + if (*b == '\n') ++b; + e = strstr(b, PEM_END_CERT); + if (NULL == e) break; + uint32_t len = (uint32_t)(e - b); + e += sizeof(PEM_END_CERT)-1; + if (i >= count) break; /*(should not happen)*/ + der = certs[i]; + if (NULL == buffer_append_base64_decode(der,b,len,BASE64_STANDARD)) + break; + } + for (char *e = data; (b = strstr(e, PEM_BEGIN_TRUSTED_CERT)); ++i) { + b += sizeof(PEM_BEGIN_TRUSTED_CERT)-1; + if (*b == '\r') ++b; + if (*b == '\n') ++b; + e = strstr(b, PEM_END_TRUSTED_CERT); + if (NULL == e) break; + uint32_t len = (uint32_t)(e - b); + e += sizeof(PEM_END_TRUSTED_CERT)-1; + if (i >= count) break; /*(should not happen)*/ + der = certs[i]; + if (NULL == buffer_append_base64_decode(der,b,len,BASE64_STANDARD)) + break; + } + if (i == count) + rc = 0; + else + errno = EIO; + } while (0); + + if (dlen) safe_memclear(data, dlen); + free(data); + + if (rc < 0) { + log_perror(errh, __FILE__, __LINE__, "error loading %s", fn); + mod_wolfssl_free_der_certs(certs); + certs = NULL; + } + + *chain = certs; + return certs ? certs[0] : NULL; +} + + +static buffer * +mod_wolfssl_evp_pkey_load_pem_file (const char *fn, log_error_st *errh) +{ + off_t dlen = 512*1024*1024;/*(arbitrary limit: 512 MB file; expect < 1 MB)*/ + char *data = fdevent_load_file(fn, &dlen, errh, malloc, free); + if (NULL == data) return NULL; + + buffer *pkey = NULL; + int rc = -1; + do { + /*(expecting single private key in file, so first match)*/ + char *b, *e; + if ((b = strstr(data, PEM_BEGIN_PKEY)) + && (e = strstr(b, PEM_END_PKEY))) + b += sizeof(PEM_BEGIN_PKEY)-1; + else if ((b = strstr(data, PEM_BEGIN_EC_PKEY)) + && (e = strstr(b, PEM_END_EC_PKEY))) + b += sizeof(PEM_BEGIN_EC_PKEY)-1; + else if ((b = strstr(data, PEM_BEGIN_RSA_PKEY)) + && (e = strstr(b, PEM_END_RSA_PKEY))) + b += sizeof(PEM_BEGIN_RSA_PKEY)-1; + else if ((b = strstr(data, PEM_BEGIN_DSA_PKEY)) + && (e = strstr(b, PEM_END_DSA_PKEY))) + b += sizeof(PEM_BEGIN_DSA_PKEY)-1; + else if ((b = strstr(data, PEM_BEGIN_ANY_PKEY)) + && (e = strstr(b, PEM_END_ANY_PKEY))) + b += sizeof(PEM_BEGIN_ANY_PKEY)-1; + else + break; + if (*b == '\r') ++b; + if (*b == '\n') ++b; + + pkey = buffer_init(); + size_t len = (size_t)(e - b); + if (NULL == buffer_append_base64_decode(pkey, b, len, BASE64_STANDARD)) + break; + rc = 0; + } while (0); + + if (dlen) safe_memclear(data, dlen); + free(data); + + if (rc < 0) { + log_error(errh, __FILE__, __LINE__, "%s() %s", __func__, fn); + return NULL; + } + + return pkey; +} + + +static int +mod_wolfssl_CTX_use_certificate_chain_file (WOLFSSL_CTX *ssl_ctx, const char *fn, log_error_st *errh) +{ + /* (While it should be possible to parse DERs from (buffer **) + * s->pc->ssl_pemfile_chain, it is simpler to re-read file and use the + * built-in wolfSSL_CTX_use_certificate_chain_buffer() interface) */ + off_t dlen = 4*1024*1024;/*(arbitrary limit: 4 MB file; expect < 1 KB)*/ + char *data = fdevent_load_file(fn, &dlen, errh, malloc, free); + if (NULL == data) return -1; + + int rc = wolfSSL_CTX_use_certificate_chain_buffer(ssl_ctx, + (unsigned char *)data, + (long)dlen); + + if (dlen) safe_memclear(data, dlen); + free(data); + + if (rc == WOLFSSL_SUCCESS) + return 1; + + log_error(errh, __FILE__, __LINE__, + "SSL: %s %s", ERR_error_string(rc, NULL), fn); + return 0; +} + + +static STACK_OF(X509_NAME) * +mod_wolfssl_load_client_CA_file (const buffer *ssl_ca_file, log_error_st *errh) +{ + /* similar to wolfSSL_load_client_CA_file(), plus some processing */ + buffer **certs = NULL; + if (NULL == mod_wolfssl_load_pem_file(ssl_ca_file->ptr, errh, &certs)) { + #ifdef __clang_analyzer__ + mod_wolfssl_free_der_certs(certs); /*unnecessary; quiet clang analyzer*/ + #endif + return NULL; + } + + WOLF_STACK_OF(WOLFSSL_X509_NAME) *canames = wolfSSL_sk_X509_NAME_new(NULL); + if (NULL == canames) { + mod_wolfssl_free_der_certs(certs); + return NULL; + } + + for (int i = 0; NULL != certs[i]; ++i) { + WOLFSSL_X509 *ca = + wolfSSL_X509_load_certificate_buffer((unsigned char *)certs[i]->ptr, + (int) + buffer_string_length(certs[i]), + WOLFSSL_FILETYPE_ASN1); + WOLFSSL_X509_NAME *subj = NULL; + if (NULL == ca + || NULL == (subj = wolfSSL_X509_get_subject_name(ca)) + || 0 != wolfSSL_sk_X509_NAME_push(canames, + wolfSSL_X509_NAME_dup(subj))) { + log_error(errh, __FILE__, __LINE__, + "SSL: couldn't read X509 certificates from '%s'", + ssl_ca_file->ptr); + if (subj) wolfSSL_X509_NAME_free(subj); + if (ca) wolfSSL_X509_free(ca); + wolfSSL_sk_X509_NAME_free(canames); + mod_wolfssl_free_der_certs(certs); + return NULL; + } + + wolfSSL_X509_free(ca); + } + + mod_wolfssl_free_der_certs(certs); + return canames; +} + + +static plugin_cacerts * +mod_wolfssl_load_cacerts (const buffer *ssl_ca_file, log_error_st *errh) +{ + /* similar to mod_wolfSSL_load_client_CA_file(), plus some processing */ + /* similar to wolfSSL_load_client_CA_file(), plus some processing */ + buffer **certs = NULL; + if (NULL == mod_wolfssl_load_pem_file(ssl_ca_file->ptr, errh, &certs)) { + #ifdef __clang_analyzer__ + mod_wolfssl_free_der_certs(certs); /*unnecessary; quiet clang analyzer*/ + #endif + return NULL; + } + + WOLFSSL_X509_STORE *castore = wolfSSL_X509_STORE_new(); + if (NULL == castore) { + mod_wolfssl_free_der_certs(certs); + return NULL; + } + + WOLF_STACK_OF(WOLFSSL_X509_NAME) *canames = wolfSSL_sk_X509_NAME_new(NULL); + if (NULL == canames) { + wolfSSL_X509_STORE_free(castore); + mod_wolfssl_free_der_certs(certs); + return NULL; + } + + for (int i = 0; NULL != certs[i]; ++i) { + WOLFSSL_X509 *ca = + wolfSSL_X509_load_certificate_buffer((unsigned char *)certs[i]->ptr, + (int) + buffer_string_length(certs[i]), + WOLFSSL_FILETYPE_ASN1); + WOLFSSL_X509_NAME *subj = NULL; + if (NULL == ca || !wolfSSL_X509_STORE_add_cert(castore, ca) + || NULL == (subj = wolfSSL_X509_get_subject_name(ca)) + || 0 != wolfSSL_sk_X509_NAME_push(canames, + wolfSSL_X509_NAME_dup(subj))) { + log_error(errh, __FILE__, __LINE__, + "SSL: couldn't read X509 certificates from '%s'", + ssl_ca_file->ptr); + if (subj) wolfSSL_X509_NAME_free(subj); + if (ca) wolfSSL_X509_free(ca); + wolfSSL_sk_X509_NAME_free(canames); + wolfSSL_X509_STORE_free(castore); + mod_wolfssl_free_der_certs(certs); + return NULL; + } + + wolfSSL_X509_free(ca); + } + + mod_wolfssl_free_der_certs(certs); + + plugin_cacerts *cacerts = malloc(sizeof(plugin_cacerts)); + force_assert(cacerts); + + cacerts->names = canames; + cacerts->certs = castore; + return cacerts; +} + + +static int +mod_wolfssl_load_cacrls (WOLFSSL_CTX *ssl_ctx, const buffer *ssl_ca_crl_file, server *srv) +{ + #ifdef HAVE_CRL /* <wolfssl/options.h> */ + int rc = wolfSSL_CTX_EnableCRL(ssl_ctx, + WOLFSSL_CRL_CHECK | WOLFSSL_CRL_CHECKALL); + if (rc != WOLFSSL_SUCCESS) return 0; + + const char *fn = ssl_ca_crl_file->ptr; + off_t dlen = 512*1024*1024;/*(arbitrary limit: 512 MB file; expect < 1 MB)*/ + char *data = fdevent_load_file(fn, &dlen, srv->errh, malloc, free); + if (NULL == data) return 0; + + rc = wolfSSL_CTX_LoadCRLBuffer(ssl_ctx, (byte *)data, (long)dlen, + WOLFSSL_FILETYPE_PEM); + + if (dlen) safe_memclear(data, dlen); + free(data); + + if (rc == WOLFSSL_SUCCESS) + return 1; + + log_error(srv->errh, __FILE__, __LINE__, + "SSL: %s %s", ERR_error_string(rc, NULL), fn); + return 0; + #else + UNUSED(ssl_ctx); + log_error(srv->errh, __FILE__, __LINE__, + "WolfSSL not built with CRL support; ignoring %s", ssl_ca_crl_file->ptr); + return WOLFSSL_FAILURE; + #endif +} + + +static int +mod_wolfssl_load_verify_locn (SSL_CTX *ssl_ctx, const buffer *b, server *srv) +{ + const char *fn = b->ptr; + off_t dlen = 512*1024*1024;/*(arbitrary limit: 512 MB file; expect < 1 MB)*/ + char *data = fdevent_load_file(fn, &dlen, srv->errh, malloc, free); + if (NULL == data) return 0; + + int rc = wolfSSL_CTX_load_verify_buffer(ssl_ctx, (unsigned char *)data, + (long)dlen, WOLFSSL_FILETYPE_PEM); + + if (dlen) safe_memclear(data, dlen); + free(data); + + if (rc == WOLFSSL_SUCCESS) + return 1; + + log_error(srv->errh, __FILE__, __LINE__, + "SSL: %s %s", ERR_error_string(rc, NULL), fn); + return 0; +} + + +static int +mod_wolfssl_load_ca_files (SSL_CTX *ssl_ctx, plugin_data *p, server *srv) +{ + /* load all ssl.ca-files specified in the config into each SSL_CTX */ + + for (uint32_t i = 0, used = p->cafiles->used; i < used; ++i) { + const buffer *b = &((data_string *)p->cafiles->data[i])->value; + if (!mod_wolfssl_load_verify_locn(ssl_ctx, b, srv)) + return 0; + } + return 1; +} + + +FREE_FUNC(mod_openssl_free) +{ + plugin_data *p = p_d; + if (NULL == p->srv) return; + mod_openssl_free_config(p->srv, p); + mod_openssl_free_openssl(); +} + + +static void +mod_openssl_merge_config_cpv (plugin_config * const pconf, const config_plugin_value_t * const cpv) +{ + switch (cpv->k_id) { /* index into static config_plugin_keys_t cpk[] */ + case 0: /* ssl.pemfile */ + if (cpv->vtype == T_CONFIG_LOCAL) + pconf->pc = cpv->v.v; + break; + case 1: /* ssl.privkey */ + break; + case 2: /* ssl.ca-file */ + if (cpv->vtype == T_CONFIG_LOCAL) + pconf->ssl_ca_file = cpv->v.v; + break; + case 3: /* ssl.ca-dn-file */ + if (cpv->vtype == T_CONFIG_LOCAL) + pconf->ssl_ca_dn_file = cpv->v.v; + break; + case 4: /* ssl.ca-crl-file */ + pconf->ssl_ca_crl_file = cpv->v.b; + break; + case 5: /* ssl.read-ahead */ + pconf->ssl_read_ahead = (0 != cpv->v.u); + break; + case 6: /* ssl.disable-client-renegotiation */ + pconf->ssl_disable_client_renegotiation = (0 != cpv->v.u); + break; + case 7: /* ssl.verifyclient.activate */ + pconf->ssl_verifyclient = (0 != cpv->v.u); + break; + case 8: /* ssl.verifyclient.enforce */ + pconf->ssl_verifyclient_enforce = (0 != cpv->v.u); + break; + case 9: /* ssl.verifyclient.depth */ + pconf->ssl_verifyclient_depth = (unsigned char)cpv->v.shrt; + break; + case 10:/* ssl.verifyclient.username */ + pconf->ssl_verifyclient_username = cpv->v.b; + break; + case 11:/* ssl.verifyclient.exportcert */ + pconf->ssl_verifyclient_export_cert = (0 != cpv->v.u); + break; + case 12:/* ssl.acme-tls-1 */ + pconf->ssl_acme_tls_1 = cpv->v.b; + break; + case 13:/* ssl.stapling-file */ + break; + case 14:/* debug.log-ssl-noise */ + pconf->ssl_log_noise = (0 != cpv->v.u); + break; + default:/* should not happen */ + return; + } +} + + +static void +mod_openssl_merge_config(plugin_config * const pconf, const config_plugin_value_t *cpv) +{ + do { + mod_openssl_merge_config_cpv(pconf, cpv); + } while ((++cpv)->k_id != -1); +} + + +static void +mod_openssl_patch_config (request_st * const r, plugin_config * const pconf) +{ + plugin_data * const p = plugin_data_singleton; + memcpy(pconf, &p->defaults, sizeof(plugin_config)); + for (int i = 1, used = p->nconfig; i < used; ++i) { + if (config_check_cond(r, (uint32_t)p->cvlist[i].k_id)) + mod_openssl_merge_config(pconf, p->cvlist + p->cvlist[i].v.u2[0]); + } +} + + +static int +safer_X509_NAME_oneline(X509_NAME *name, char *buf, size_t sz) +{ + if (wolfSSL_X509_get_name_oneline(name, buf, (int)sz)) + return (int)strlen(buf); + else { + buf[0] = '\0'; + return -1; + } +} + + +static void +ssl_info_callback (const SSL *ssl, int where, int ret) +{ + UNUSED(ret); + + if (0 != (where & SSL_CB_HANDSHAKE_START)) { + handler_ctx *hctx = (handler_ctx *) SSL_get_app_data(ssl); + if (hctx->renegotiations >= 0) ++hctx->renegotiations; + } + #ifdef TLS1_3_VERSION + /* https://github.com/openssl/openssl/issues/5721 + * "TLSv1.3 unexpected InfoCallback after handshake completed" */ + if (0 != (where & SSL_CB_HANDSHAKE_DONE)) { + /* SSL_version() is valid after initial handshake completed */ + SSL *ssl_nonconst; + *(const SSL **)&ssl_nonconst = ssl; + if (wolfSSL_GetVersion(ssl_nonconst) >= WOLFSSL_TLSV1_3) { + /* https://wiki.openssl.org/index.php/TLS1.3 + * "Renegotiation is not possible in a TLSv1.3 connection" */ + handler_ctx *hctx = (handler_ctx *) SSL_get_app_data(ssl); + hctx->renegotiations = -1; + } + } + #endif +} + +/* https://wiki.openssl.org/index.php/Manual:SSL_CTX_set_verify(3)#EXAMPLES */ +static int +verify_callback(int preverify_ok, X509_STORE_CTX *ctx) +{ + char buf[256]; + X509 *err_cert; + int err, depth; + SSL *ssl; + handler_ctx *hctx; + + err = X509_STORE_CTX_get_error(ctx); + depth = X509_STORE_CTX_get_error_depth(ctx); + + /* + * Retrieve the pointer to the SSL of the connection currently treated + * and the application specific data stored into the SSL object. + */ + ssl = X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx()); + hctx = (handler_ctx *) SSL_get_app_data(ssl); + + /* + * Catch a too long certificate chain. The depth limit set using + * wolfSSL_CTX_set_verify_depth() is by purpose set to "limit+1" so + * that whenever the "depth>verify_depth" condition is met, we + * have violated the limit and want to log this error condition. + * We must do it here, because the CHAIN_TOO_LONG error would not + * be found explicitly; only errors introduced by cutting off the + * additional certificates would be logged. + */ + if (depth > hctx->conf.ssl_verifyclient_depth) { + preverify_ok = 0; + err = X509_V_ERR_CERT_CHAIN_TOO_LONG; + X509_STORE_CTX_set_error(ctx, err); + } + + if (preverify_ok && 0 == depth && NULL != hctx->conf.ssl_ca_dn_file) { + /* verify that client cert is issued by CA in ssl.ca-dn-file + * if both ssl.ca-dn-file and ssl.ca-file were configured */ + STACK_OF(X509_NAME) * const cert_names = hctx->conf.ssl_ca_dn_file; + X509_NAME *issuer; + err_cert = ctx->current_cert;/*wolfSSL_X509_STORE_CTX_get_current_cert*/ + if (NULL == err_cert) return !hctx->conf.ssl_verifyclient_enforce; + issuer = X509_get_issuer_name(err_cert); + #if 0 /*(?desirable/undesirable to have cert_names sorted?)*/ + if (-1 != sk_X509_NAME_find(cert_names, issuer)) + return preverify_ok; /* match */ + #else + for (int i = 0, len = sk_X509_NAME_num(cert_names); i < len; ++i) { + if (0 == wolfSSL_X509_NAME_cmp(sk_X509_NAME_value(cert_names, i), + issuer)) + return preverify_ok; /* match */ + } + #endif + + preverify_ok = 0; + err = X509_V_ERR_CERT_REJECTED; + X509_STORE_CTX_set_error(ctx, err); + } + + if (preverify_ok) { + return preverify_ok; + } + + err_cert = ctx->current_cert; /*wolfSSL_X509_STORE_CTX_get_current_cert()*/ + if (NULL == err_cert) return !hctx->conf.ssl_verifyclient_enforce; + safer_X509_NAME_oneline(X509_get_subject_name(err_cert),buf,sizeof(buf)); + log_error_st *errh = hctx->r->conf.errh; + log_error(errh, __FILE__, __LINE__, + "SSL: verify error:num=%d:%s:depth=%d:subject=%s", + err, X509_verify_cert_error_string(err), depth, buf); + + /* + * At this point, err contains the last verification error. We can use + * it for something special + */ + if (!preverify_ok && (err == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY || + err == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT)) { + safer_X509_NAME_oneline(X509_get_issuer_name(err_cert),buf,sizeof(buf)); + log_error(errh, __FILE__, __LINE__, "SSL: issuer=%s", buf); + } + + return !hctx->conf.ssl_verifyclient_enforce; +} + +static int +mod_openssl_cert_cb (SSL *ssl, void *arg) +{ + handler_ctx *hctx = (handler_ctx *) SSL_get_app_data(ssl); + plugin_cert *pc = hctx->conf.pc; + UNUSED(arg); + + if (NULL == pc->ssl_pemfile_x509 || NULL == pc->ssl_pemfile_pkey) { + /* x509/pkey available <=> pemfile was set <=> pemfile got patched: + * so this should never happen, unless you nest $SERVER["socket"] */ + log_error(hctx->r->conf.errh, __FILE__, __LINE__, + "SSL: no certificate/private key for TLS server name %s", + hctx->r->uri.authority.ptr); + return 0; + } + + /* first set certificate! + * setting private key checks whether certificate matches it */ + buffer *cert = pc->ssl_pemfile_x509; + if (1 != wolfSSL_use_certificate_ASN1(ssl, (unsigned char *)cert->ptr, + (int)buffer_string_length(cert))) { + log_error(hctx->r->conf.errh, __FILE__, __LINE__, + "SSL: failed to set certificate for TLS server name %s: %s", + hctx->r->uri.authority.ptr, ERR_error_string(ERR_get_error(), NULL)); + return 0; + } + + buffer *pkey = pc->ssl_pemfile_pkey; + if (1 != wolfSSL_use_PrivateKey_buffer(ssl, (unsigned char *)pkey->ptr, + (int)buffer_string_length(pkey), + WOLFSSL_FILETYPE_ASN1)) { + log_error(hctx->r->conf.errh, __FILE__, __LINE__, + "SSL: failed to set private key for TLS server name %s: %s", + hctx->r->uri.authority.ptr, ERR_error_string(ERR_get_error(), NULL)); + return 0; + } + + if (hctx->conf.ssl_verifyclient) { + if (NULL == hctx->conf.ssl_ca_file) { + log_error(hctx->r->conf.errh, __FILE__, __LINE__, + "SSL: can't verify client without ssl.ca-file " + "for TLS server name %s", hctx->r->uri.authority.ptr); + return 0; + } + /* WolfSSL does not support setting per-session CA list; + * limitation is to per-CTX CA list, and is not changed after SNI */ + int mode = SSL_VERIFY_PEER; + if (hctx->conf.ssl_verifyclient_enforce) + mode |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT; + wolfSSL_set_verify(ssl, mode, verify_callback); + wolfSSL_set_verify_depth(ssl, hctx->conf.ssl_verifyclient_depth + 1); + } + else { + wolfSSL_set_verify(ssl, SSL_VERIFY_NONE, NULL); + } + + return 1; +} + +#ifdef HAVE_TLS_EXTENSIONS +static int +mod_openssl_SNI (handler_ctx *hctx, const char *servername, size_t len) +{ + request_st * const r = hctx->r; + if (len >= 1024) { /*(expecting < 256; TLSEXT_MAXLEN_host_name is 255)*/ + log_error(r->conf.errh, __FILE__, __LINE__, + "SSL: SNI name too long %.*s", (int)len, servername); + return SSL_TLSEXT_ERR_ALERT_FATAL; + } + + /* use SNI to patch mod_openssl config and then reset COMP_HTTP_HOST */ + buffer_copy_string_len(&r->uri.authority, servername, len); + buffer_to_lower(&r->uri.authority); + #if 0 + /*(r->uri.authority used below for configuration before request read; + * revisit for h2)*/ + if (0 != http_request_host_policy(&r->uri.authority, + r->conf.http_parseopts, 443)) + return SSL_TLSEXT_ERR_ALERT_FATAL; + #endif + + r->conditional_is_valid |= (1 << COMP_HTTP_SCHEME) + | (1 << COMP_HTTP_HOST); + mod_openssl_patch_config(r, &hctx->conf); + /* reset COMP_HTTP_HOST so that conditions re-run after request hdrs read */ + /*(done in response.c:config_cond_cache_reset() after request hdrs read)*/ + /*config_cond_cache_reset_item(r, COMP_HTTP_HOST);*/ + /*buffer_clear(&r->uri.authority);*/ + + return (mod_openssl_cert_cb(hctx->ssl, NULL) == 1) + ? SSL_TLSEXT_ERR_OK + : SSL_TLSEXT_ERR_ALERT_FATAL; +} + +static int +network_ssl_servername_callback (SSL *ssl, int *al, void *srv) +{ + handler_ctx *hctx = (handler_ctx *) SSL_get_app_data(ssl); + buffer_copy_string(&hctx->r->uri.scheme, "https"); + UNUSED(al); + UNUSED(srv); + + const char *servername; + size_t len = (size_t) + wolfSSL_SNI_GetRequest(ssl, WOLFSSL_SNI_HOST_NAME, (void **)&servername); + if (0 == len) + return SSL_TLSEXT_ERR_NOACK; /* client did not provide SNI */ + #if 0 /* WolfSSL does not provide per-session SSL_set_read_ahead() */ + int read_ahead = hctx->conf.ssl_read_ahead; + int rc = mod_openssl_SNI(hctx, servername, len); + if (!read_ahead && hctx->conf.ssl_read_ahead) + SSL_set_read_ahead(ssl, hctx->conf.ssl_read_ahead); + return rc; + #else + return mod_openssl_SNI(hctx, servername, len); + #endif +} +#endif + + +#ifndef OPENSSL_NO_OCSP + +#define OCSP_RESPONSE OcspResponse +#define OCSP_RESPONSE_free wolfSSL_OCSP_RESPONSE_free +#define d2i_OCSP_RESPONSE_bio wolfSSL_d2i_OCSP_RESPONSE_bio +#define d2i_OCSP_RESPONSE wolfSSL_d2i_OCSP_RESPONSE +#define i2d_OCSP_RESPONSE wolfSSL_i2d_OCSP_RESPONSE + +static buffer * +mod_openssl_load_stapling_file (const char *file, log_error_st *errh, buffer *b) +{ + /* load stapling .der into buffer *b only if successful + * + * Note: for some TLS libs, the OCSP stapling response is not copied when + * assigned to a session (and is reasonable since not changed frequently) + * - BoringSSL SSL_set_ocsp_response() + * - WolfSSL SSL_set_tlsext_status_ocsp_resp() (differs from OpenSSL API) + * Therefore, there is a potential race condition if the OCSP response is + * assigned to the session during the handshake and the Server Hello is + * partially sent, AND (unlikely, if possible at all), the TLS library is + * in the middle of reading this OSCP response buffer. If the OCSP response + * is replaced due to an updated ssl.stapling-file (checked periodically), + * AND the buffer is resized, this would be a problem. Resizing the buffer + * is unlikely since updated OSCP response for same certificate are + * typically the same size with the signature and dates refreshed. + */ + + /* load raw .der file */ + off_t dlen = 1*1024*1024;/*(arbitrary limit: 1 MB file; expect < 1 KB)*/ + char *data = fdevent_load_file(file, &dlen, errh, malloc, free); + if (NULL == data) return NULL; + + if (NULL == b) + b = buffer_init(); + else if (b->ptr) + free(b->ptr); + b->ptr = data; + b->used = (uint32_t)dlen; + b->size = (uint32_t)dlen+1; + return b; +} + + +static time_t +mod_openssl_asn1_time_to_posix (ASN1_TIME *asn1time) +{ + /* Note: this does not check for integer overflow of time_t! */ + int day, sec; + return wolfSSL_ASN1_TIME_diff(&day, &sec, NULL, asn1time) + ? log_epoch_secs + day*86400 + sec + : (time_t)-1; +} + + +static time_t +mod_openssl_ocsp_next_update (plugin_cert *pc) +{ + #if defined(WOLFSSL_VERSION) + /* XXX: future TODO */ + UNUSED(pc); + (void)mod_openssl_asn1_time_to_posix(NULL); + return (time_t)-1; /*(not implemented)*/ + #else + buffer *der = pc->ssl_stapling; + const unsigned char *p = (unsigned char *)der->ptr; /*(p gets modified)*/ + OCSP_RESPONSE *ocsp = d2i_OCSP_RESPONSE(NULL,&p,buffer_string_length(der)); + if (NULL == ocsp) return (time_t)-1; + OCSP_BASICRESP *bs = OCSP_response_get1_basic(ocsp); + if (NULL == bs) { + OCSP_RESPONSE_free(ocsp); + return (time_t)-1; + } + + /* XXX: should save and evaluate cert status returned by these calls */ + ASN1_TIME *nextupd = NULL; + #ifdef WOLFSSL_VERSION /* WolfSSL limitation */ + /* WolfSSL does not provide OCSP_resp_get0() OCSP_single_get0_status() */ + /* (inactive code path; alternative path followed in #if above for WolfSSL) + * (chain not currently available in mod_openssl when used with WolfSSL) + * (For WolfSSL, pc->ssl_pemfile_chain might not be filled in with actual + * chain, but is used to store (buffer **) of DER decoded from PEM certs + * read from ssl.pemfile, which may be a single cert, pc->ssl_pemfile_x509. + * The chain is not calculated or filled in if single cert, and neither are + * (X509 *), though (X509 *) could be temporarily created to calculated + * (OCSP_CERTID *), which additionally could be calculated once at startup) + */ + OCSP_CERTID *id = (NULL != pc->ssl_pemfile_chain) + ? OCSP_cert_to_id(NULL, pc->ssl_pemfile_x509, + sk_X509_value(pc->ssl_pemfile_chain, 0)) + : NULL; + if (id == NULL) { + OCSP_BASICRESP_free(bs); + OCSP_RESPONSE_free(ocsp); + return (time_t)-1; + } + OCSP_resp_find_status(bs, id, NULL, NULL, NULL, NULL, &nextupd); + OCSP_CERTID_free(id); + #else + OCSP_single_get0_status(OCSP_resp_get0(bs, 0), NULL, NULL, NULL, &nextupd); + #endif + time_t t = nextupd ? mod_openssl_asn1_time_to_posix(nextupd) : (time_t)-1; + + /* Note: trust external process which creates ssl.stapling-file to verify + * (as well as to validate certificate status) + * future: verify OCSP response here to double-check */ + + OCSP_BASICRESP_free(bs); + OCSP_RESPONSE_free(ocsp); + + return t; + #endif +} + + +static int +mod_openssl_reload_stapling_file (server *srv, plugin_cert *pc, const time_t cur_ts) +{ + buffer *b = mod_openssl_load_stapling_file(pc->ssl_stapling_file->ptr, + srv->errh, pc->ssl_stapling); + if (!b) return 0; + + pc->ssl_stapling = b; /*(unchanged unless orig was NULL)*/ + pc->ssl_stapling_loadts = cur_ts; + pc->ssl_stapling_nextts = mod_openssl_ocsp_next_update(pc); + if (pc->ssl_stapling_nextts == (time_t)-1) { + /* "Next Update" might not be provided by OCSP responder + * Use 3600 sec (1 hour) in that case. */ + /* retry in 1 hour if unable to determine Next Update */ + pc->ssl_stapling_nextts = cur_ts + 3600; + pc->ssl_stapling_loadts = 0; + } + + return 1; +} + + +static int +mod_openssl_refresh_stapling_file (server *srv, plugin_cert *pc, const time_t cur_ts) +{ + if (pc->ssl_stapling && pc->ssl_stapling_nextts - 256 > cur_ts) + return 1; /* skip check for refresh unless close to expire */ + struct stat st; + if (0 != stat(pc->ssl_stapling_file->ptr, &st) + || st.st_mtime <= pc->ssl_stapling_loadts) { + if (pc->ssl_stapling_nextts < cur_ts) { + /* discard expired OCSP stapling response */ + buffer_free(pc->ssl_stapling); + pc->ssl_stapling = NULL; + if (pc->must_staple) { + log_error(srv->errh, __FILE__, __LINE__, + "certificate marked OCSP Must-Staple, " + "but OCSP response expired from ssl.stapling-file %s", + pc->ssl_stapling_file->ptr); + } + } + return 1; + } + return mod_openssl_reload_stapling_file(srv, pc, cur_ts); +} + + +static void +mod_openssl_refresh_stapling_files (server *srv, const plugin_data *p, const time_t cur_ts) +{ + /* future: might construct array of (plugin_cert *) at startup + * to avoid the need to search for them here */ + for (int i = 0, used = p->nconfig; i < used; ++i) { + const config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0]; + for (; cpv->k_id != -1; ++cpv) { + if (cpv->k_id != 0) continue; /* k_id == 0 for ssl.pemfile */ + if (cpv->vtype != T_CONFIG_LOCAL) continue; + plugin_cert *pc = cpv->v.v; + if (!buffer_string_is_empty(pc->ssl_stapling_file)) + mod_openssl_refresh_stapling_file(srv, pc, cur_ts); + } + } +} + + +static int +mod_openssl_crt_must_staple (const X509 *crt) +{ + /* XXX: TODO: not implemented */ + UNUSED(crt); + return 0; +} + +#endif /* OPENSSL_NO_OCSP */ + + +static plugin_cert * +network_openssl_load_pemfile (server *srv, const buffer *pemfile, const buffer *privkey, const buffer *ssl_stapling_file) +{ + if (!mod_openssl_init_once_openssl(srv)) return NULL; + + buffer **ssl_pemfile_chain = NULL; + buffer *ssl_pemfile_x509 = + mod_wolfssl_load_pem_file(pemfile->ptr, srv->errh, &ssl_pemfile_chain); + if (NULL == ssl_pemfile_x509) + return NULL; + + buffer *ssl_pemfile_pkey = + mod_wolfssl_evp_pkey_load_pem_file(privkey->ptr, srv->errh); + if (NULL == ssl_pemfile_pkey) { + /*buffer_free(ssl_pemfile_x509);*//*(part of chain)*/ + mod_wolfssl_free_der_certs(ssl_pemfile_chain); + return NULL; + } + + /* X509_check_private_key() is a stub func (not implemented) in WolfSSL */ + + plugin_cert *pc = malloc(sizeof(plugin_cert)); + force_assert(pc); + pc->ssl_pemfile_pkey = ssl_pemfile_pkey; + pc->ssl_pemfile_x509 = ssl_pemfile_x509; + pc->ssl_pemfile_chain= ssl_pemfile_chain; + pc->ssl_pemfile = pemfile; + pc->ssl_privkey = privkey; + pc->ssl_stapling = NULL; + pc->ssl_stapling_file= ssl_stapling_file; + pc->ssl_stapling_loadts = 0; + pc->ssl_stapling_nextts = 0; + #ifndef OPENSSL_NO_OCSP + /*(not implemented for WolfSSL, though could convert the DER to (X509 *), + * check Must-Staple, and then destroy (X509 *))*/ + (void)mod_openssl_crt_must_staple(NULL); + pc->must_staple = 0; + #else + pc->must_staple = 0; + #endif + + if (!buffer_string_is_empty(pc->ssl_stapling_file)) { + #ifndef OPENSSL_NO_OCSP + if (!mod_openssl_reload_stapling_file(srv, pc, log_epoch_secs)) { + /* continue without OCSP response if there is an error */ + } + #else + log_error(srv->errh, __FILE__, __LINE__, "SSL:" + "OCSP stapling not supported; ignoring %s", + pc->ssl_stapling_file->ptr); + #endif + } + else if (pc->must_staple) { + log_error(srv->errh, __FILE__, __LINE__, + "certificate %s marked OCSP Must-Staple, " + "but ssl.stapling-file not provided", pemfile->ptr); + } + + return pc; +} + + +#ifdef HAVE_TLS_EXTENSIONS + +#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation + +static int +mod_openssl_acme_tls_1 (SSL *ssl, handler_ctx *hctx) +{ + buffer * const b = hctx->tmp_buf; + const buffer * const name = &hctx->r->uri.authority; + log_error_st * const errh = hctx->r->conf.errh; + buffer *ssl_pemfile_x509 = NULL; + buffer *ssl_pemfile_pkey = NULL; + buffer **ssl_pemfile_chain = NULL; + size_t len; + int rc = SSL_TLSEXT_ERR_ALERT_FATAL; + + /* check if acme-tls/1 protocol is enabled (path to dir of cert(s) is set)*/ + if (buffer_string_is_empty(hctx->conf.ssl_acme_tls_1)) + return SSL_TLSEXT_ERR_NOACK; /*(reuse value here for not-configured)*/ + buffer_copy_buffer(b, hctx->conf.ssl_acme_tls_1); + buffer_append_slash(b); + + /* check if SNI set server name (required for acme-tls/1 protocol) + * and perform simple path checks for no '/' + * and no leading '.' (e.g. ignore "." or ".." or anything beginning '.') */ + if (buffer_string_is_empty(name)) return rc; + if (NULL != strchr(name->ptr, '/')) return rc; + if (name->ptr[0] == '.') return rc; + #if 0 + if (0 != http_request_host_policy(name,hctx->r->conf.http_parseopts,443)) + return rc; + #endif + buffer_append_string_buffer(b, name); + len = buffer_string_length(b); + + do { + buffer_append_string_len(b, CONST_STR_LEN(".crt.pem")); + ssl_pemfile_x509 = + mod_wolfssl_load_pem_file(b->ptr, errh, &ssl_pemfile_chain); + if (NULL == ssl_pemfile_x509) { + log_error(errh, __FILE__, __LINE__, + "SSL: Failed to load acme-tls/1 pemfile: %s", b->ptr); + break; + } + + buffer_string_set_length(b, len); /*(remove ".crt.pem")*/ + buffer_append_string_len(b, CONST_STR_LEN(".key.pem")); + ssl_pemfile_pkey = mod_wolfssl_evp_pkey_load_pem_file(b->ptr, errh); + if (NULL == ssl_pemfile_pkey) { + log_error(errh, __FILE__, __LINE__, + "SSL: Failed to load acme-tls/1 pemfile: %s", b->ptr); + break; + } + + #if 0 /* redundant with below? */ + if (!X509_check_private_key(ssl_pemfile_x509, ssl_pemfile_pkey)) { + log_error(errh, __FILE__, __LINE__, + "SSL: Private key does not match acme-tls/1 " + "certificate public key, reason: %s %s" + ERR_error_string(ERR_get_error(), NULL), b->ptr); + break; + } + #endif + + /* first set certificate! + * setting private key checks whether certificate matches it */ + buffer *cert = ssl_pemfile_x509; + if (1 != wolfSSL_use_certificate_ASN1(ssl, (unsigned char *)cert->ptr, + (int)buffer_string_length(cert))){ + log_error(errh, __FILE__, __LINE__, + "SSL: failed to set acme-tls/1 certificate for TLS server " + "name %s: %s", name->ptr, ERR_error_string(ERR_get_error(),NULL)); + break; + } + + if (ssl_pemfile_chain) { + /* WolfSSL limitation */ + /* WolfSSL does not support setting per-session chain; + * limitation is to per-CTX chain, and so chain is not provided for + * "acme-tls/1" (might be non-issue; chain might not be present) */ + } + + buffer *pkey = ssl_pemfile_pkey; + if (1 != wolfSSL_use_PrivateKey_buffer(ssl, (unsigned char *)pkey->ptr, + (int)buffer_string_length(pkey), + WOLFSSL_FILETYPE_ASN1)) { + log_error(errh, __FILE__, __LINE__, + "SSL: failed to set acme-tls/1 private key for TLS server " + "name %s: %s", name->ptr, ERR_error_string(ERR_get_error(),NULL)); + break; + } + + hctx->conf.ssl_verifyclient_enforce = 0; + wolfSSL_set_verify(ssl, SSL_VERIFY_NONE, NULL); + rc = SSL_TLSEXT_ERR_OK; + } while (0); + + if (ssl_pemfile_pkey) buffer_free(ssl_pemfile_pkey); + /*if (ssl_pemfile_x509) buffer_free(ssl_pemfile_x509);*//*(part of chain)*/ + mod_wolfssl_free_der_certs(ssl_pemfile_chain); + + return rc; +} + +enum { + MOD_OPENSSL_ALPN_HTTP11 = 1 + ,MOD_OPENSSL_ALPN_HTTP10 = 2 + ,MOD_OPENSSL_ALPN_H2 = 3 + ,MOD_OPENSSL_ALPN_ACME_TLS_1 = 4 +}; + +/* https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids */ +static int +mod_openssl_alpn_select_cb (SSL *ssl, const unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg) +{ + handler_ctx *hctx = (handler_ctx *) SSL_get_app_data(ssl); + unsigned short proto; + UNUSED(arg); + + for (unsigned int i = 0, n; i < inlen; i += n) { + n = in[i++]; + if (i+n > inlen || 0 == n) break; + switch (n) { + case 2: /* "h2" */ + if (in[i] == 'h' && in[i+1] == '2') { + if (!hctx->r->conf.h2proto) continue; + proto = MOD_OPENSSL_ALPN_H2; + hctx->r->http_version = HTTP_VERSION_2; + break; + } + continue; + case 8: /* "http/1.1" "http/1.0" */ + if (0 == memcmp(in+i, "http/1.", 7)) { + if (in[i+7] == '1') { + proto = MOD_OPENSSL_ALPN_HTTP11; + break; + } + if (in[i+7] == '0') { + proto = MOD_OPENSSL_ALPN_HTTP10; + break; + } + } + continue; + case 10: /* "acme-tls/1" */ + if (0 == memcmp(in+i, "acme-tls/1", 10)) { + int rc = mod_openssl_acme_tls_1(ssl, hctx); + if (rc == SSL_TLSEXT_ERR_OK) { + proto = MOD_OPENSSL_ALPN_ACME_TLS_1; + break; + } + /* (use SSL_TLSEXT_ERR_NOACK for not-configured) */ + if (rc == SSL_TLSEXT_ERR_NOACK) continue; + return rc; + } + continue; + default: + continue; + } + + hctx->alpn = proto; + *out = in+i; + *outlen = n; + return SSL_TLSEXT_ERR_OK; + } + + return SSL_TLSEXT_ERR_NOACK; +} + +#endif /* TLSEXT_TYPE_application_layer_protocol_negotiation */ + +#endif /* HAVE_TLS_EXTENSIONS */ + + +static int +mod_openssl_ssl_conf_cmd (server *srv, plugin_config_socket *s); + + +#ifndef NO_DH +/* wolfSSL provides wolfSSL_DH_set0_pqg() for + * Apache w/ OPENSSL_VERSION_NUMBER >= 0x10100000L + * but does not provide most other openssl 1.1.0+ interfaces + * and get_dh2048() might not be necessary if wolfSSL defines + * HAVE_TLS_EXTENSIONS HAVE_DH_DEFAULT_PARAMS HAVE_FFDHE HAVE_SUPPORTED_CURVES*/ +#define DH_set0_pqg(dh, dh_p, NULL, dh_g) \ + ((dh)->p = (dh_p), (dh)->g = (dh_g), (dh_p) != NULL && (dh_g) != NULL) +/* https://tools.ietf.org/html/rfc7919#appendix-A.1 + * A.1. ffdhe2048 + * + * https://ssl-config.mozilla.org/ffdhe2048.txt + * C code generated with: openssl dhparam -C -in ffdhe2048.txt + */ +static DH *get_dh2048(void) +{ + static unsigned char dhp_2048[] = { + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xAD, 0xF8, + 0x54, 0x58, 0xA2, 0xBB, 0x4A, 0x9A, 0xAF, 0xDC, 0x56, 0x20, + 0x27, 0x3D, 0x3C, 0xF1, 0xD8, 0xB9, 0xC5, 0x83, 0xCE, 0x2D, + 0x36, 0x95, 0xA9, 0xE1, 0x36, 0x41, 0x14, 0x64, 0x33, 0xFB, + 0xCC, 0x93, 0x9D, 0xCE, 0x24, 0x9B, 0x3E, 0xF9, 0x7D, 0x2F, + 0xE3, 0x63, 0x63, 0x0C, 0x75, 0xD8, 0xF6, 0x81, 0xB2, 0x02, + 0xAE, 0xC4, 0x61, 0x7A, 0xD3, 0xDF, 0x1E, 0xD5, 0xD5, 0xFD, + 0x65, 0x61, 0x24, 0x33, 0xF5, 0x1F, 0x5F, 0x06, 0x6E, 0xD0, + 0x85, 0x63, 0x65, 0x55, 0x3D, 0xED, 0x1A, 0xF3, 0xB5, 0x57, + 0x13, 0x5E, 0x7F, 0x57, 0xC9, 0x35, 0x98, 0x4F, 0x0C, 0x70, + 0xE0, 0xE6, 0x8B, 0x77, 0xE2, 0xA6, 0x89, 0xDA, 0xF3, 0xEF, + 0xE8, 0x72, 0x1D, 0xF1, 0x58, 0xA1, 0x36, 0xAD, 0xE7, 0x35, + 0x30, 0xAC, 0xCA, 0x4F, 0x48, 0x3A, 0x79, 0x7A, 0xBC, 0x0A, + 0xB1, 0x82, 0xB3, 0x24, 0xFB, 0x61, 0xD1, 0x08, 0xA9, 0x4B, + 0xB2, 0xC8, 0xE3, 0xFB, 0xB9, 0x6A, 0xDA, 0xB7, 0x60, 0xD7, + 0xF4, 0x68, 0x1D, 0x4F, 0x42, 0xA3, 0xDE, 0x39, 0x4D, 0xF4, + 0xAE, 0x56, 0xED, 0xE7, 0x63, 0x72, 0xBB, 0x19, 0x0B, 0x07, + 0xA7, 0xC8, 0xEE, 0x0A, 0x6D, 0x70, 0x9E, 0x02, 0xFC, 0xE1, + 0xCD, 0xF7, 0xE2, 0xEC, 0xC0, 0x34, 0x04, 0xCD, 0x28, 0x34, + 0x2F, 0x61, 0x91, 0x72, 0xFE, 0x9C, 0xE9, 0x85, 0x83, 0xFF, + 0x8E, 0x4F, 0x12, 0x32, 0xEE, 0xF2, 0x81, 0x83, 0xC3, 0xFE, + 0x3B, 0x1B, 0x4C, 0x6F, 0xAD, 0x73, 0x3B, 0xB5, 0xFC, 0xBC, + 0x2E, 0xC2, 0x20, 0x05, 0xC5, 0x8E, 0xF1, 0x83, 0x7D, 0x16, + 0x83, 0xB2, 0xC6, 0xF3, 0x4A, 0x26, 0xC1, 0xB2, 0xEF, 0xFA, + 0x88, 0x6B, 0x42, 0x38, 0x61, 0x28, 0x5C, 0x97, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF + }; + static unsigned char dhg_2048[] = { + 0x02 + }; + DH *dh = DH_new(); + BIGNUM *p, *g; + + if (dh == NULL) + return NULL; + p = BN_bin2bn(dhp_2048, sizeof(dhp_2048), NULL); + g = BN_bin2bn(dhg_2048, sizeof(dhg_2048), NULL); + if (p == NULL || g == NULL || !DH_set0_pqg(dh, p, NULL, g)) { + DH_free(dh); + BN_free(p); + BN_free(g); + return NULL; + } + return dh; +} +#endif + + +static int +mod_openssl_ssl_conf_curves(server *srv, plugin_config_socket *s, const buffer *ssl_ec_curve) +{ + #ifndef OPENSSL_NO_ECDH + int nid = 0; + /* Support for Elliptic-Curve Diffie-Hellman key exchange */ + if (!buffer_string_is_empty(ssl_ec_curve)) { + /* OpenSSL only supports the "named curves" + * from RFC 4492, section 5.1.1. */ + nid = wolfSSL_OBJ_sn2nid((char *) ssl_ec_curve->ptr); + if (nid == 0) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: Unknown curve name %s", ssl_ec_curve->ptr); + return 0; + } + } + else { + /* Default curve */ + nid = wolfSSL_OBJ_sn2nid("prime256v1"); + } + if (nid) { + EC_KEY *ecdh; + ecdh = EC_KEY_new_by_curve_name(nid); + if (ecdh == NULL) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: Unable to create curve %s", ssl_ec_curve->ptr); + return 0; + } + SSL_CTX_set_tmp_ecdh(s->ssl_ctx, ecdh); + SSL_CTX_set_options(s->ssl_ctx, SSL_OP_SINGLE_ECDH_USE); + EC_KEY_free(ecdh); + } + #endif + UNUSED(srv); + UNUSED(s); + UNUSED(ssl_ec_curve); + + return 1; +} + + +static int +network_init_ssl (server *srv, plugin_config_socket *s, plugin_data *p) +{ + /* load SSL certificates */ + + #ifndef SSL_OP_NO_COMPRESSION + #define SSL_OP_NO_COMPRESSION 0 + #endif + #ifndef SSL_MODE_RELEASE_BUFFERS /* OpenSSL >= 1.0.0 */ + #define SSL_MODE_RELEASE_BUFFERS 0 + #endif + long ssloptions = SSL_OP_ALL + | SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION + | SSL_OP_NO_COMPRESSION; + + s->ssl_ctx = (!s->ssl_use_sslv2 && !s->ssl_use_sslv3) + ? SSL_CTX_new(TLS_server_method()) + : SSL_CTX_new(SSLv23_server_method()); + if (NULL == s->ssl_ctx) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: %s", ERR_error_string(ERR_get_error(), NULL)); + return -1; + } + + #ifdef SSL_OP_NO_RENEGOTIATION /* openssl 1.1.0 */ + if (s->ssl_disable_client_renegotiation) + ssloptions |= SSL_OP_NO_RENEGOTIATION; + #endif + + /* completely useless identifier; + * required for client cert verification to work with sessions */ + if (0 == SSL_CTX_set_session_id_context( + s->ssl_ctx,(const unsigned char*)CONST_STR_LEN("lighttpd"))){ + log_error(srv->errh, __FILE__, __LINE__, + "SSL: failed to set session context: %s", + ERR_error_string(ERR_get_error(), NULL)); + return -1; + } + + #if !defined(NO_SESSION_CACHE) + /* disable session cache; session tickets are preferred */ + SSL_CTX_set_session_cache_mode(s->ssl_ctx, SSL_SESS_CACHE_OFF + | SSL_SESS_CACHE_NO_AUTO_CLEAR + | SSL_SESS_CACHE_NO_INTERNAL); + #endif + + if (s->ssl_empty_fragments) { + #ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS + ssloptions &= ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS; + #else + ssloptions &= ~0x00000800L; /* hardcode constant */ + log_error(srv->errh, __FILE__, __LINE__, + "WARNING: SSL: 'insert empty fragments' not supported by the " + "openssl version used to compile lighttpd with"); + #endif + } + + SSL_CTX_set_options(s->ssl_ctx, ssloptions); + SSL_CTX_set_info_callback(s->ssl_ctx, ssl_info_callback); + + /*(wolfSSL does not support SSLv2)*/ + + if (!s->ssl_use_sslv3 && 0 != SSL_OP_NO_SSLv3) { + /* disable SSLv3 */ + if ((SSL_OP_NO_SSLv3 + & SSL_CTX_set_options(s->ssl_ctx, SSL_OP_NO_SSLv3)) + != SSL_OP_NO_SSLv3) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: %s", ERR_error_string(ERR_get_error(), NULL)); + return -1; + } + } + + if (!buffer_string_is_empty(s->ssl_cipher_list)) { + /* Disable support for low encryption ciphers */ + if (SSL_CTX_set_cipher_list(s->ssl_ctx,s->ssl_cipher_list->ptr)!=1){ + log_error(srv->errh, __FILE__, __LINE__, + "SSL: %s", ERR_error_string(ERR_get_error(), NULL)); + return -1; + } + + if (s->ssl_honor_cipher_order) { + SSL_CTX_set_options(s->ssl_ctx,SSL_OP_CIPHER_SERVER_PREFERENCE); + } + } + + #ifdef SSL_OP_PRIORITIZE_CHACHA /*(openssl 1.1.1)*/ + if (s->ssl_honor_cipher_order) + SSL_CTX_set_options(s->ssl_ctx, SSL_OP_PRIORITIZE_CHACHA); + #endif + + #ifndef NO_DH + { + DH *dh; + /* Support for Diffie-Hellman key exchange */ + if (!buffer_string_is_empty(s->ssl_dh_file)) { + const char *fn = s->ssl_dh_file->ptr; + off_t dlen = 1*1024*1024;/*(arbitrary limit: 1 MB; expect < 1 KB)*/ + char *data = fdevent_load_file(fn, &dlen, srv->errh, malloc, free); + int rc = (NULL != data) ? 0 : -1; + if (0 == rc) + wolfSSL_CTX_SetTmpDH_buffer(s->ssl_ctx, (unsigned char *)data, + (long)dlen, WOLFSSL_FILETYPE_PEM); + if (dlen) safe_memclear(data, dlen); + free(data); + if (rc < 0) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: Unable to read DH params from file %s", + s->ssl_dh_file->ptr); + return -1; + } + } + else { + dh = get_dh2048(); + if (dh == NULL) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: get_dh2048() failed"); + return -1; + } + SSL_CTX_set_tmp_dh(s->ssl_ctx,dh); + DH_free(dh); + } + SSL_CTX_set_options(s->ssl_ctx,SSL_OP_SINGLE_DH_USE); + } + #else + if (!buffer_string_is_empty(s->ssl_dh_file)) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: openssl compiled without DH support, " + "can't load parameters from %s", s->ssl_dh_file->ptr); + } + #endif + + if (!mod_openssl_ssl_conf_curves(srv, s, s->ssl_ec_curve)) + return -1; + + #ifdef HAVE_SESSION_TICKET + SSL_CTX_set_tlsext_ticket_key_cb(s->ssl_ctx, ssl_tlsext_ticket_key_cb); + #endif + + #ifndef OPENSSL_NO_OCSP + SSL_CTX_set_tlsext_status_cb(s->ssl_ctx, ssl_tlsext_status_cb); + #endif + + /* load all ssl.ca-files specified in the config into each SSL_CTX + * XXX: This might be a bit excessive, but are all trusted CAs + * TODO: prefer to load on-demand in mod_openssl_cert_cb() + * for openssl >= 1.0.2 */ + if (!mod_wolfssl_load_ca_files(s->ssl_ctx, p, srv)) + return -1; + + if (s->ssl_verifyclient) { + if (NULL == s->ssl_ca_file) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: You specified ssl.verifyclient.activate " + "but no ssl.ca-file"); + return -1; + } + /* WTH wolfssl? wolfSSL_dup_CA_list() is a stub which returns NULL + * and so DN names in cert request are not set here. + * (A patch has been submitted to WolfSSL to correct this) + * https://github.com/wolfSSL/wolfssl/pull/3098 */ + STACK_OF(X509_NAME) * const cert_names = s->ssl_ca_dn_file + ? s->ssl_ca_dn_file + : s->ssl_ca_file->names; + wolfSSL_CTX_set_client_CA_list(s->ssl_ctx, + wolfSSL_dup_CA_list(cert_names)); + int mode = SSL_VERIFY_PEER; + if (s->ssl_verifyclient_enforce) { + mode |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT; + } + wolfSSL_CTX_set_verify(s->ssl_ctx, mode, verify_callback); + wolfSSL_CTX_set_verify_depth(s->ssl_ctx, + s->ssl_verifyclient_depth + 1); + if (!buffer_string_is_empty(s->ssl_ca_crl_file)) { + if (!mod_wolfssl_load_cacrls(s->ssl_ctx,s->ssl_ca_crl_file,srv)) + return -1; + } + } + + if (1 != mod_wolfssl_CTX_use_certificate_chain_file( + s->ssl_ctx, s->pc->ssl_pemfile->ptr, srv->errh)) + return -1; + + buffer *k = s->pc->ssl_pemfile_pkey; + if (1 != wolfSSL_CTX_use_PrivateKey_buffer(s->ssl_ctx, + (unsigned char *)k->ptr, + (int)buffer_string_length(k), + WOLFSSL_FILETYPE_ASN1)) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: %s %s %s", ERR_error_string(ERR_get_error(), NULL), + s->pc->ssl_pemfile->ptr, s->pc->ssl_privkey->ptr); + return -1; + } + + if (SSL_CTX_check_private_key(s->ssl_ctx) != 1) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: Private key does not match the certificate public key, " + "reason: %s %s %s", ERR_error_string(ERR_get_error(), NULL), + s->pc->ssl_pemfile->ptr, s->pc->ssl_privkey->ptr); + return -1; + } + + SSL_CTX_set_default_read_ahead(s->ssl_ctx, s->ssl_read_ahead); + SSL_CTX_set_mode(s->ssl_ctx, SSL_CTX_get_mode(s->ssl_ctx) + | SSL_MODE_ENABLE_PARTIAL_WRITE + | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER + | SSL_MODE_RELEASE_BUFFERS); + + #ifdef HAVE_TLS_EXTENSIONS + wolfSSL_CTX_set_servername_callback( + s->ssl_ctx, network_ssl_servername_callback); + wolfSSL_CTX_set_servername_arg(s->ssl_ctx, srv); + + #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation + SSL_CTX_set_alpn_select_cb(s->ssl_ctx,mod_openssl_alpn_select_cb,NULL); + #endif + #endif + + if (!s->ssl_use_sslv3 && !s->ssl_use_sslv2 + && wolfSSL_CTX_SetMinVersion(s->ssl_ctx, WOLFSSL_TLSV1_2) + != WOLFSSL_SUCCESS) + return -1; + + if (s->ssl_conf_cmd && s->ssl_conf_cmd->used) { + if (0 != mod_openssl_ssl_conf_cmd(srv, s)) return -1; + } + + return 0; +} + + +static int +mod_openssl_set_defaults_sockets(server *srv, plugin_data *p) +{ + static const config_plugin_keys_t cpk[] = { + { CONST_STR_LEN("ssl.engine"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.cipher-list"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.honor-cipher-order"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.dh-file"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.ec-curve"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.openssl.ssl-conf-cmd"), + T_CONFIG_ARRAY_KVSTRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.pemfile"), /* included to process global scope */ + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.empty-fragments"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.use-sslv2"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.use-sslv3"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.stek-file"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_SERVER } + ,{ NULL, 0, + T_CONFIG_UNSET, + T_CONFIG_SCOPE_UNSET } + }; + /* WolfSSL does not have mapping for "HIGH" */ + /* cipher list is (current) output of "openssl ciphers HIGH" */ + static const buffer default_ssl_cipher_list = { CONST_STR_LEN("TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256:TLS_AES_128_CCM_SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-DSS-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-CCM8:ECDHE-ECDSA-AES256-CCM:DHE-RSA-AES256-CCM8:DHE-RSA-AES256-CCM:ECDHE-ECDSA-ARIA256-GCM-SHA384:ECDHE-ARIA256-GCM-SHA384:DHE-DSS-ARIA256-GCM-SHA384:DHE-RSA-ARIA256-GCM-SHA384:ADH-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-CCM8:ECDHE-ECDSA-AES128-CCM:DHE-RSA-AES128-CCM8:DHE-RSA-AES128-CCM:ECDHE-ECDSA-ARIA128-GCM-SHA256:ECDHE-ARIA128-GCM-SHA256:DHE-DSS-ARIA128-GCM-SHA256:DHE-RSA-ARIA128-GCM-SHA256:ADH-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:ECDHE-ECDSA-CAMELLIA256-SHA384:ECDHE-RSA-CAMELLIA256-SHA384:DHE-RSA-CAMELLIA256-SHA256:DHE-DSS-CAMELLIA256-SHA256:ADH-AES256-SHA256:ADH-CAMELLIA256-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA256:DHE-DSS-AES128-SHA256:ECDHE-ECDSA-CAMELLIA128-SHA256:ECDHE-RSA-CAMELLIA128-SHA256:DHE-RSA-CAMELLIA128-SHA256:DHE-DSS-CAMELLIA128-SHA256:ADH-AES128-SHA256:ADH-CAMELLIA128-SHA256:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:DHE-RSA-CAMELLIA256-SHA:DHE-DSS-CAMELLIA256-SHA:AECDH-AES256-SHA:ADH-AES256-SHA:ADH-CAMELLIA256-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-DSS-CAMELLIA128-SHA:AECDH-AES128-SHA:ADH-AES128-SHA:ADH-CAMELLIA128-SHA:RSA-PSK-AES256-GCM-SHA384:DHE-PSK-AES256-GCM-SHA384:RSA-PSK-CHACHA20-POLY1305:DHE-PSK-CHACHA20-POLY1305:ECDHE-PSK-CHACHA20-POLY1305:DHE-PSK-AES256-CCM8:DHE-PSK-AES256-CCM:RSA-PSK-ARIA256-GCM-SHA384:DHE-PSK-ARIA256-GCM-SHA384:AES256-GCM-SHA384:AES256-CCM8:AES256-CCM:ARIA256-GCM-SHA384:PSK-AES256-GCM-SHA384:PSK-CHACHA20-POLY1305:PSK-AES256-CCM8:PSK-AES256-CCM:PSK-ARIA256-GCM-SHA384:RSA-PSK-AES128-GCM-SHA256:DHE-PSK-AES128-GCM-SHA256:DHE-PSK-AES128-CCM8:DHE-PSK-AES128-CCM:RSA-PSK-ARIA128-GCM-SHA256:DHE-PSK-ARIA128-GCM-SHA256:AES128-GCM-SHA256:AES128-CCM8:AES128-CCM:ARIA128-GCM-SHA256:PSK-AES128-GCM-SHA256:PSK-AES128-CCM8:PSK-AES128-CCM:PSK-ARIA128-GCM-SHA256:AES256-SHA256:CAMELLIA256-SHA256:AES128-SHA256:CAMELLIA128-SHA256:ECDHE-PSK-AES256-CBC-SHA384:ECDHE-PSK-AES256-CBC-SHA:SRP-DSS-AES-256-CBC-SHA:SRP-RSA-AES-256-CBC-SHA:SRP-AES-256-CBC-SHA:RSA-PSK-AES256-CBC-SHA384:DHE-PSK-AES256-CBC-SHA384:RSA-PSK-AES256-CBC-SHA:DHE-PSK-AES256-CBC-SHA:ECDHE-PSK-CAMELLIA256-SHA384:RSA-PSK-CAMELLIA256-SHA384:DHE-PSK-CAMELLIA256-SHA384:AES256-SHA:CAMELLIA256-SHA:PSK-AES256-CBC-SHA384:PSK-AES256-CBC-SHA:PSK-CAMELLIA256-SHA384:ECDHE-PSK-AES128-CBC-SHA256:ECDHE-PSK-AES128-CBC-SHA:SRP-DSS-AES-128-CBC-SHA:SRP-RSA-AES-128-CBC-SHA:SRP-AES-128-CBC-SHA:RSA-PSK-AES128-CBC-SHA256:DHE-PSK-AES128-CBC-SHA256:RSA-PSK-AES128-CBC-SHA:DHE-PSK-AES128-CBC-SHA:ECDHE-PSK-CAMELLIA128-SHA256:RSA-PSK-CAMELLIA128-SHA256:DHE-PSK-CAMELLIA128-SHA256:AES128-SHA:CAMELLIA128-SHA:PSK-AES128-CBC-SHA256:PSK-AES128-CBC-SHA:PSK-CAMELLIA128-SHA256"), 0 }; + + p->ssl_ctxs = calloc(srv->config_context->used, sizeof(plugin_ssl_ctx)); + force_assert(p->ssl_ctxs); + + int rc = HANDLER_GO_ON; + plugin_data_base srvplug; + memset(&srvplug, 0, sizeof(srvplug)); + plugin_data_base * const ps = &srvplug; + if (!config_plugin_values_init(srv, ps, cpk, "mod_openssl")) + return HANDLER_ERROR; + + plugin_config_socket defaults; + memset(&defaults, 0, sizeof(defaults)); + defaults.ssl_honor_cipher_order = 1; + defaults.ssl_cipher_list = &default_ssl_cipher_list; + + /* process and validate config directives for global and $SERVER["socket"] + * (init i to 0 if global context; to 1 to skip empty global context) */ + for (int i = !ps->cvlist[0].v.u2[1]; i < ps->nconfig; ++i) { + config_cond_info cfginfo; + config_get_config_cond_info(&cfginfo, (uint32_t)ps->cvlist[i].k_id); + int is_socket_scope = (0 == i || cfginfo.comp == COMP_SERVER_SOCKET); + int count_not_engine = 0; + + plugin_config_socket conf; + memcpy(&conf, &defaults, sizeof(conf)); + + /*(preserve prior behavior; not inherited)*/ + /*(forcing inheritance might break existing configs where SSL is enabled + * by default in the global scope, but not $SERVER["socket"]=="*:80") */ + conf.ssl_enabled = 0; + + config_plugin_value_t *cpv = ps->cvlist + ps->cvlist[i].v.u2[0]; + for (; -1 != cpv->k_id; ++cpv) { + /* ignore ssl.pemfile (k_id=6); included to process global scope */ + if (!is_socket_scope && cpv->k_id != 6) { + log_error(srv->errh, __FILE__, __LINE__, + "%s is valid only in global scope or " + "$SERVER[\"socket\"] condition", cpk[cpv->k_id].k); + continue; + } + ++count_not_engine; + switch (cpv->k_id) { + case 0: /* ssl.engine */ + conf.ssl_enabled = (0 != cpv->v.u); + --count_not_engine; + break; + case 1: /* ssl.cipher-list */ + conf.ssl_cipher_list = cpv->v.b; + break; + case 2: /* ssl.honor-cipher-order */ + conf.ssl_honor_cipher_order = (0 != cpv->v.u); + break; + case 3: /* ssl.dh-file */ + conf.ssl_dh_file = cpv->v.b; + break; + case 4: /* ssl.ec-curve */ + conf.ssl_ec_curve = cpv->v.b; + break; + case 5: /* ssl.openssl.ssl-conf-cmd */ + *(const array **)&conf.ssl_conf_cmd = cpv->v.a; + break; + case 6: /* ssl.pemfile */ + /* ignore here; included to process global scope when + * ssl.pemfile is set, but ssl.engine is not "enable" */ + break; + case 7: /* ssl.empty-fragments */ + conf.ssl_empty_fragments = (0 != cpv->v.u); + log_error(srv->errh, __FILE__, __LINE__, "SSL: " + "ssl.empty-fragments is deprecated and will soon be " + "removed. It is disabled by default."); + if (conf.ssl_empty_fragments) + log_error(srv->errh, __FILE__, __LINE__, "SSL: " + "If needed, use: ssl.openssl.ssl-conf-cmd = " + "(\"Options\" => \"EmptyFragments\")"); + log_error(srv->errh, __FILE__, __LINE__, "SSL: " + "ssl.empty-fragments is a " + "counter-measure against a SSL 3.0/TLS 1.0 protocol " + "vulnerability affecting CBC ciphers, which cannot be handled" + " by some broken (Microsoft) SSL implementations."); + break; + case 8: /* ssl.use-sslv2 */ + conf.ssl_use_sslv2 = (0 != cpv->v.u); + log_error(srv->errh, __FILE__, __LINE__, "SSL: " + "ssl.use-sslv2 is deprecated and will soon be removed. " + "It is disabled by default. " + "Many modern TLS libraries no longer support SSLv2."); + break; + case 9: /* ssl.use-sslv3 */ + conf.ssl_use_sslv3 = (0 != cpv->v.u); + log_error(srv->errh, __FILE__, __LINE__, "SSL: " + "ssl.use-sslv3 is deprecated and will soon be removed. " + "It is disabled by default. " + "Many modern TLS libraries no longer support SSLv3."); + if (conf.ssl_use_sslv3) + log_error(srv->errh, __FILE__, __LINE__, "SSL: " + "If needed, use: ssl.openssl.ssl-conf-cmd = " + "(\"MinProtocol\" => \"SSLv3\")"); + break; + case 10:/* ssl.stek-file */ + if (!buffer_is_empty(cpv->v.b)) + p->ssl_stek_file = cpv->v.b->ptr; + break; + default:/* should not happen */ + break; + } + } + if (HANDLER_GO_ON != rc) break; + if (0 == i) memcpy(&defaults, &conf, sizeof(conf)); + + if (0 != i && !conf.ssl_enabled) continue; + + /* fill plugin_config_socket with global context then $SERVER["socket"] + * only for directives directly in current $SERVER["socket"] condition*/ + + /*conf.pc = p->defaults.pc;*/ + conf.ssl_ca_file = p->defaults.ssl_ca_file; + conf.ssl_ca_dn_file = p->defaults.ssl_ca_dn_file; + conf.ssl_ca_crl_file = p->defaults.ssl_ca_crl_file; + conf.ssl_verifyclient = p->defaults.ssl_verifyclient; + conf.ssl_verifyclient_enforce = p->defaults.ssl_verifyclient_enforce; + conf.ssl_verifyclient_depth = p->defaults.ssl_verifyclient_depth; + conf.ssl_read_ahead = p->defaults.ssl_read_ahead; + + int sidx = ps->cvlist[i].k_id; + for (int j = !p->cvlist[0].v.u2[1]; j < p->nconfig; ++j) { + if (p->cvlist[j].k_id != sidx) continue; + /*if (0 == sidx) break;*//*(repeat to get ssl_pemfile,ssl_privkey)*/ + cpv = p->cvlist + p->cvlist[j].v.u2[0]; + for (; -1 != cpv->k_id; ++cpv) { + ++count_not_engine; + switch (cpv->k_id) { + case 0: /* ssl.pemfile */ + if (cpv->vtype == T_CONFIG_LOCAL) + conf.pc = cpv->v.v; + break; + case 2: /* ssl.ca-file */ + if (cpv->vtype == T_CONFIG_LOCAL) + conf.ssl_ca_file = cpv->v.v; + break; + case 3: /* ssl.ca-dn-file */ + if (cpv->vtype == T_CONFIG_LOCAL) + conf.ssl_ca_dn_file = cpv->v.v; + break; + case 4: /* ssl.ca-crl-file */ + conf.ssl_ca_crl_file = cpv->v.b; + break; + case 5: /* ssl.read-ahead */ + conf.ssl_read_ahead = (0 != cpv->v.u); + break; + case 6: /* ssl.disable-client-renegotiation */ + conf.ssl_disable_client_renegotiation = (0 != cpv->v.u); + break; + case 7: /* ssl.verifyclient.activate */ + conf.ssl_verifyclient = (0 != cpv->v.u); + break; + case 8: /* ssl.verifyclient.enforce */ + conf.ssl_verifyclient_enforce = (0 != cpv->v.u); + break; + case 9: /* ssl.verifyclient.depth */ + conf.ssl_verifyclient_depth = (unsigned char)cpv->v.shrt; + break; + default: + break; + } + } + break; + } + + if (NULL == conf.pc) { + if (0 == i && !conf.ssl_enabled) continue; + if (0 != i) { + /* inherit ssl settings from global scope + * (if only ssl.engine = "enable" and no other ssl.* settings) + * (This is for convenience when defining both IPv4 and IPv6 + * and desiring to inherit the ssl config from global context + * without having to duplicate the directives)*/ + if (count_not_engine) { + log_error(srv->errh, __FILE__, __LINE__, + "ssl.pemfile has to be set in same $SERVER[\"socket\"] scope " + "as other ssl.* directives, unless only ssl.engine is set, " + "inheriting ssl.* from global scope"); + rc = HANDLER_ERROR; + continue; + } + plugin_ssl_ctx * const s = p->ssl_ctxs + sidx; + *s = *p->ssl_ctxs;/*(copy struct of ssl_ctx from global scope)*/ + continue; + } + /* PEM file is required */ + log_error(srv->errh, __FILE__, __LINE__, + "ssl.pemfile has to be set when ssl.engine = \"enable\""); + rc = HANDLER_ERROR; + continue; + } + + /* configure ssl_ctx for socket */ + + /*conf.ssl_ctx = NULL;*//*(filled by network_init_ssl() even on error)*/ + if (0 == network_init_ssl(srv, &conf, p)) { + plugin_ssl_ctx * const s = p->ssl_ctxs + sidx; + s->ssl_ctx = conf.ssl_ctx; + } + else { + SSL_CTX_free(conf.ssl_ctx); + rc = HANDLER_ERROR; + } + } + + #ifdef HAVE_SESSION_TICKET + if (rc == HANDLER_GO_ON && ssl_is_init) + mod_openssl_session_ticket_key_check(p, log_epoch_secs); + #endif + + free(srvplug.cvlist); + return rc; +} + + +SETDEFAULTS_FUNC(mod_openssl_set_defaults) +{ + static const config_plugin_keys_t cpk[] = { + { CONST_STR_LEN("ssl.pemfile"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.privkey"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.ca-file"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.ca-dn-file"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.ca-crl-file"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.read-ahead"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.disable-client-renegotiation"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.verifyclient.activate"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.verifyclient.enforce"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.verifyclient.depth"), + T_CONFIG_SHORT, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.verifyclient.username"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.verifyclient.exportcert"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.acme-tls-1"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("ssl.stapling-file"), + T_CONFIG_STRING, + T_CONFIG_SCOPE_CONNECTION } + ,{ CONST_STR_LEN("debug.log-ssl-noise"), + T_CONFIG_BOOL, + T_CONFIG_SCOPE_CONNECTION } + ,{ NULL, 0, + T_CONFIG_UNSET, + T_CONFIG_SCOPE_UNSET } + }; + + plugin_data * const p = p_d; + p->srv = srv; + p->cafiles = array_init(0); + if (!config_plugin_values_init(srv, p, cpk, "mod_openssl")) + return HANDLER_ERROR; + + const buffer *default_ssl_ca_crl_file = NULL; + + /* process and validate config directives + * (init i to 0 if global context; to 1 to skip empty global context) */ + for (int i = !p->cvlist[0].v.u2[1]; i < p->nconfig; ++i) { + config_plugin_value_t *cpv = p->cvlist + p->cvlist[i].v.u2[0]; + config_plugin_value_t *pemfile = NULL; + config_plugin_value_t *privkey = NULL; + const buffer *ssl_stapling_file = NULL; + const buffer *ssl_ca_file = NULL; + const buffer *ssl_ca_dn_file = NULL; + const buffer *ssl_ca_crl_file = NULL; + X509_STORE *ca_store = NULL; + for (; -1 != cpv->k_id; ++cpv) { + switch (cpv->k_id) { + case 0: /* ssl.pemfile */ + if (!buffer_string_is_empty(cpv->v.b)) pemfile = cpv; + break; + case 1: /* ssl.privkey */ + if (!buffer_string_is_empty(cpv->v.b)) privkey = cpv; + break; + case 2: /* ssl.ca-file */ + if (buffer_string_is_empty(cpv->v.b)) break; + if (!mod_openssl_init_once_openssl(srv)) return HANDLER_ERROR; + ssl_ca_file = cpv->v.b; + cpv->v.v = mod_wolfssl_load_cacerts(ssl_ca_file, srv->errh); + if (NULL != cpv->v.v) { + cpv->vtype = T_CONFIG_LOCAL; + ca_store = ((plugin_cacerts *)cpv->v.v)->certs; + } + else { + log_error(srv->errh, __FILE__, __LINE__, "SSL: %s %s", + ERR_error_string(ERR_get_error(), NULL), + ssl_ca_file->ptr); + return HANDLER_ERROR; + } + break; + case 3: /* ssl.ca-dn-file */ + if (buffer_string_is_empty(cpv->v.b)) break; + if (!mod_openssl_init_once_openssl(srv)) return HANDLER_ERROR; + ssl_ca_dn_file = cpv->v.b; + cpv->v.v = mod_wolfssl_load_client_CA_file(ssl_ca_dn_file, + srv->errh); + if (NULL != cpv->v.v) { + cpv->vtype = T_CONFIG_LOCAL; + } + else { + log_error(srv->errh, __FILE__, __LINE__, "SSL: %s %s", + ERR_error_string(ERR_get_error(), NULL), + ssl_ca_dn_file->ptr); + return HANDLER_ERROR; + } + break; + case 4: /* ssl.ca-crl-file */ + if (buffer_string_is_empty(cpv->v.b)) break; + ssl_ca_crl_file = cpv->v.b; + if (0 == i) default_ssl_ca_crl_file = cpv->v.b; + break; + case 5: /* ssl.read-ahead */ + case 6: /* ssl.disable-client-renegotiation */ + case 7: /* ssl.verifyclient.activate */ + case 8: /* ssl.verifyclient.enforce */ + break; + case 9: /* ssl.verifyclient.depth */ + if (cpv->v.shrt > 255) { + log_error(srv->errh, __FILE__, __LINE__, + "%s is absurdly large (%hu); limiting to 255", + cpk[cpv->k_id].k, cpv->v.shrt); + cpv->v.shrt = 255; + } + break; + case 10:/* ssl.verifyclient.username */ + case 11:/* ssl.verifyclient.exportcert */ + case 12:/* ssl.acme-tls-1 */ + break; + case 13:/* ssl.stapling-file */ + ssl_stapling_file = cpv->v.b; + break; + case 14:/* debug.log-ssl-noise */ + break; + default:/* should not happen */ + break; + } + } + + /* p->cafiles for legacy only */ + /* load all ssl.ca-files into a single chain */ + /*(certificate load order might matter)*/ + if (ssl_ca_dn_file) + array_insert_value(p->cafiles, CONST_BUF_LEN(ssl_ca_dn_file)); + if (ssl_ca_file) + array_insert_value(p->cafiles, CONST_BUF_LEN(ssl_ca_file)); + UNUSED(ca_store); + UNUSED(ssl_ca_crl_file); + UNUSED(default_ssl_ca_crl_file); + + if (pemfile) { + #ifndef HAVE_TLS_EXTENSIONS + config_cond_info cfginfo; + uint32_t j = (uint32_t)p->cvlist[i].k_id; + config_get_config_cond_info(&cfginfo, j); + if (j > 0 && (COMP_SERVER_SOCKET != cfginfo.comp + || cfginfo.cond != CONFIG_COND_EQ)) { + if (COMP_HTTP_HOST == cfginfo.comp) + log_error(srv->errh, __FILE__, __LINE__, "SSL:" + "can't use ssl.pemfile with $HTTP[\"host\"], " + "as openssl version does not support TLS extensions"); + else + log_error(srv->errh, __FILE__, __LINE__, "SSL:" + "ssl.pemfile only works in SSL socket binding context " + "as openssl version does not support TLS extensions"); + return HANDLER_ERROR; + } + #endif + if (NULL == privkey) privkey = pemfile; + pemfile->v.v = + network_openssl_load_pemfile(srv, pemfile->v.b, privkey->v.b, + ssl_stapling_file); + if (pemfile->v.v) + pemfile->vtype = T_CONFIG_LOCAL; + else + return HANDLER_ERROR; + } + } + + p->defaults.ssl_verifyclient = 0; + p->defaults.ssl_verifyclient_enforce = 1; + p->defaults.ssl_verifyclient_depth = 9; + p->defaults.ssl_verifyclient_export_cert = 0; + p->defaults.ssl_disable_client_renegotiation = 1; + p->defaults.ssl_read_ahead = 0; + + /* initialize p->defaults from global config context */ + if (p->nconfig > 0 && p->cvlist->v.u2[1]) { + const config_plugin_value_t *cpv = p->cvlist + p->cvlist->v.u2[0]; + if (-1 != cpv->k_id) + mod_openssl_merge_config(&p->defaults, cpv); + } + + return mod_openssl_set_defaults_sockets(srv, p); +} + + +static int +load_next_chunk (chunkqueue * const cq, off_t max_bytes, + const char ** const data, size_t * const data_len, + log_error_st * const errh) +{ + chunk *c = cq->first; + + /* local_send_buffer is a static buffer of size (LOCAL_SEND_BUFSIZE) + * + * it has to stay at the same location all the time to satisfy the needs + * of SSL_write to pass the SAME parameter in case of a _WANT_WRITE + * + * buffer is allocated once, is NOT realloced (note: not thread-safe) + * + * (Note: above restriction no longer true since SSL_CTX_set_mode() is + * called with SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER) + * */ + + force_assert(NULL != c); + + switch (c->type) { + case MEM_CHUNK: + *data = NULL; + *data_len = 0; + do { + size_t have; + + force_assert(c->offset >= 0 + && c->offset <= (off_t)buffer_string_length(c->mem)); + + have = buffer_string_length(c->mem) - c->offset; + + /* copy small mem chunks into single large buffer before SSL_write() + * to reduce number times write() called underneath SSL_write() and + * potentially reduce number of packets generated if TCP_NODELAY */ + if (*data_len) { + size_t space = LOCAL_SEND_BUFSIZE - *data_len; + if (have > space) + have = space; + if (have > (size_t)max_bytes - *data_len) + have = (size_t)max_bytes - *data_len; + if (*data != local_send_buffer) { + memcpy(local_send_buffer, *data, *data_len); + *data = local_send_buffer; + } + memcpy(local_send_buffer+*data_len,c->mem->ptr+c->offset,have); + *data_len += have; + continue; + } + + if ((off_t) have > max_bytes) have = max_bytes; + + *data = c->mem->ptr + c->offset; + *data_len = have; + } while ((c = c->next) && c->type == MEM_CHUNK + && *data_len < LOCAL_SEND_BUFSIZE + && (off_t) *data_len < max_bytes); + return 0; + + case FILE_CHUNK: + if (0 != chunkqueue_open_file_chunk(cq, errh)) return -1; + + { + off_t offset, toSend; + + force_assert(c->offset >= 0 && c->offset <= c->file.length); + offset = c->file.start + c->offset; + toSend = c->file.length - c->offset; + + if (toSend > LOCAL_SEND_BUFSIZE) toSend = LOCAL_SEND_BUFSIZE; + if (toSend > max_bytes) toSend = max_bytes; + + if (-1 == lseek(c->file.fd, offset, SEEK_SET)) { + log_perror(errh, __FILE__, __LINE__, "lseek"); + return -1; + } + if (-1 == (toSend = read(c->file.fd, local_send_buffer, toSend))) { + log_perror(errh, __FILE__, __LINE__, "read"); + return -1; + } + + *data = local_send_buffer; + *data_len = toSend; + } + return 0; + } + + return -1; +} + + +static int +mod_openssl_close_notify(handler_ctx *hctx); + + +static int +connection_write_cq_ssl (connection *con, chunkqueue *cq, off_t max_bytes) +{ + handler_ctx *hctx = con->plugin_ctx[plugin_data_singleton->id]; + SSL *ssl = hctx->ssl; + log_error_st * const errh = hctx->errh; + + if (0 != hctx->close_notify) return mod_openssl_close_notify(hctx); + + chunkqueue_remove_finished_chunks(cq); + + while (max_bytes > 0 && NULL != cq->first) { + const char *data; + size_t data_len; + int wr; + + if (0 != load_next_chunk(cq,max_bytes,&data,&data_len,errh)) return -1; + + /** + * SSL_write man-page + * + * WARNING + * When an SSL_write() operation has to be repeated because of + * SSL_ERROR_WANT_READ or SSL_ERROR_WANT_WRITE, it must be + * repeated with the same arguments. + */ + + ERR_clear_error(); + wr = SSL_write(ssl, data, data_len); + + if (hctx->renegotiations > 1 + && hctx->conf.ssl_disable_client_renegotiation) { + log_error(errh, __FILE__, __LINE__, + "SSL: renegotiation initiated by client, killing connection"); + return -1; + } + + if (wr <= 0) { + int ssl_r; + unsigned long err; + + switch ((ssl_r = SSL_get_error(ssl, wr))) { + case SSL_ERROR_WANT_READ: + con->is_readable = -1; + return 0; /* try again later */ + case SSL_ERROR_WANT_WRITE: + con->is_writable = -1; + return 0; /* try again later */ + case SSL_ERROR_SYSCALL: + /* perhaps we have error waiting in our error-queue */ + if (0 != (err = ERR_get_error())) { + do { + log_error(errh, __FILE__, __LINE__, + "SSL: %d %d %s",ssl_r,wr,ERR_error_string(err,NULL)); + } while((err = ERR_get_error())); + } else if (wr == -1) { + /* no, but we have errno */ + switch(errno) { + case EPIPE: + case ECONNRESET: + return -2; + default: + log_perror(errh, __FILE__, __LINE__, + "SSL: %d %d", ssl_r, wr); + break; + } + } else { + /* neither error-queue nor errno ? */ + log_perror(errh, __FILE__, __LINE__, + "SSL (error): %d %d", ssl_r, wr); + } + break; + + case SSL_ERROR_ZERO_RETURN: + /* clean shutdown on the remote side */ + + if (wr == 0) return -2; + + /* fall through */ + default: + while((err = ERR_get_error())) { + log_error(errh, __FILE__, __LINE__, + "SSL: %d %d %s", ssl_r, wr, ERR_error_string(err, NULL)); + } + break; + } + return -1; + } + + chunkqueue_mark_written(cq, wr); + max_bytes -= wr; + + if ((size_t) wr < data_len) break; /* try again later */ + } + + return 0; +} + + +static int +connection_read_cq_ssl (connection *con, chunkqueue *cq, off_t max_bytes) +{ + handler_ctx *hctx = con->plugin_ctx[plugin_data_singleton->id]; + int len; + char *mem = NULL; + size_t mem_len = 0; + + UNUSED(max_bytes); + + if (0 != hctx->close_notify) return mod_openssl_close_notify(hctx); + + ERR_clear_error(); + do { + len = SSL_pending(hctx->ssl); + mem_len = len < 2048 ? 2048 : (size_t)len; + chunk * const ckpt = cq->last; + mem = chunkqueue_get_memory(cq, &mem_len); + + len = SSL_read(hctx->ssl, mem, mem_len); + if (len > 0) { + chunkqueue_use_memory(cq, ckpt, len); + con->bytes_read += len; + } else { + chunkqueue_use_memory(cq, ckpt, 0); + } + + if (hctx->renegotiations > 1 + && hctx->conf.ssl_disable_client_renegotiation) { + log_error(hctx->errh, __FILE__, __LINE__, + "SSL: renegotiation initiated by client, killing connection"); + return -1; + } + + #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation + if (hctx->alpn) { + if (hctx->alpn == MOD_OPENSSL_ALPN_ACME_TLS_1) { + chunkqueue_reset(cq); + /* initiate handshake in order to send ServerHello. + * Once TLS handshake is complete, return -1 to result in + * CON_STATE_ERROR so that socket connection is quickly closed*/ + if (1 == SSL_do_handshake(hctx->ssl)) return -1; + len = -1; + break; + } + hctx->alpn = 0; + } + #endif + } while (len > 0 + && (hctx->conf.ssl_read_ahead || SSL_pending(hctx->ssl) > 0)); + + if (len < 0) { + int oerrno = errno; + int rc, ssl_err; + switch ((rc = SSL_get_error(hctx->ssl, len))) { + case SSL_ERROR_WANT_WRITE: + con->is_writable = -1; + /* fall through */ + case SSL_ERROR_WANT_READ: + con->is_readable = 0; + + /* the manual says we have to call SSL_read with the same arguments + * next time. we ignore this restriction; no one has complained + * about it in 1.5 yet, so it probably works anyway. + */ + + return 0; + case SSL_ERROR_SYSCALL: + /** + * man SSL_get_error() + * + * SSL_ERROR_SYSCALL + * Some I/O error occurred. The OpenSSL error queue may contain + * more information on the error. If the error queue is empty + * (i.e. ERR_get_error() returns 0), ret can be used to find out + * more about the error: If ret == 0, an EOF was observed that + * violates the protocol. If ret == -1, the underlying BIO + * reported an I/O error (for socket I/O on Unix systems, consult + * errno for details). + * + */ + while((ssl_err = ERR_get_error())) { + /* get all errors from the error-queue */ + log_error(hctx->errh, __FILE__, __LINE__, + "SSL: %d %s", rc, ERR_error_string(ssl_err, NULL)); + } + + switch(oerrno) { + case ECONNRESET: + if (!hctx->conf.ssl_log_noise) break; + /* fall through */ + default: + /* (oerrno should be something like ECONNABORTED not 0 + * if client disconnected before anything was sent + * (e.g. TCP connection probe), but it does not appear + * that openssl provides such notification, not even + * something like SSL_R_SSL_HANDSHAKE_FAILURE) */ + if (0==oerrno && 0==cq->bytes_in && !hctx->conf.ssl_log_noise) + break; + + log_error(hctx->errh, __FILE__, __LINE__, + "SSL: %d %d %d %s", len, rc, oerrno, strerror(oerrno)); + break; + } + + break; + case SSL_ERROR_ZERO_RETURN: + /* clean shutdown on the remote side */ + + if (rc == 0) { + /* FIXME: later */ + } + + /* fall through */ + default: + while((ssl_err = ERR_get_error())) { + switch (ERR_GET_REASON(ssl_err)) { + case SSL_R_SSL_HANDSHAKE_FAILURE: + #ifdef SSL_R_UNEXPECTED_EOF_WHILE_READING + case SSL_R_UNEXPECTED_EOF_WHILE_READING: + #endif + #ifdef SSL_R_TLSV1_ALERT_UNKNOWN_CA + case SSL_R_TLSV1_ALERT_UNKNOWN_CA: + #endif + #ifdef SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN + case SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN: + #endif + #ifdef SSL_R_SSLV3_ALERT_BAD_CERTIFICATE + case SSL_R_SSLV3_ALERT_BAD_CERTIFICATE: + #endif + if (!hctx->conf.ssl_log_noise) continue; + break; + default: + break; + } + /* get all errors from the error-queue */ + log_error(hctx->errh, __FILE__, __LINE__, + "SSL: %d %s", rc, ERR_error_string(ssl_err, NULL)); + } + break; + } + return -1; + } else if (len == 0) { + con->is_readable = 0; + /* the other end close the connection -> KEEP-ALIVE */ + + return -2; + } else { + return 0; + } +} + + +CONNECTION_FUNC(mod_openssl_handle_con_accept) +{ + server_socket *srv_sock = con->srv_socket; + if (!srv_sock->is_ssl) return HANDLER_GO_ON; + + plugin_data *p = p_d; + handler_ctx * const hctx = handler_ctx_init(); + request_st * const r = &con->request; + hctx->r = r; + hctx->con = con; + hctx->tmp_buf = con->srv->tmp_buf; + hctx->errh = r->conf.errh; + con->plugin_ctx[p->id] = hctx; + + plugin_ssl_ctx * const s = p->ssl_ctxs + srv_sock->sidx; + hctx->ssl = SSL_new(s->ssl_ctx); + if (NULL != hctx->ssl + && SSL_set_app_data(hctx->ssl, hctx) + && SSL_set_fd(hctx->ssl, con->fd)) { + SSL_set_accept_state(hctx->ssl); + con->network_read = connection_read_cq_ssl; + con->network_write = connection_write_cq_ssl; + con->proto_default_port = 443; /* "https" */ + mod_openssl_patch_config(r, &hctx->conf); + return HANDLER_GO_ON; + } + else { + log_error(r->conf.errh, __FILE__, __LINE__, + "SSL: %s", ERR_error_string(ERR_get_error(), NULL)); + return HANDLER_ERROR; + } +} + + +static void +mod_openssl_detach(handler_ctx *hctx) +{ + /* step aside from further SSL processing + * (used after handle_connection_shut_wr hook) */ + /* future: might restore prior network_read and network_write fn ptrs */ + hctx->con->is_ssl_sock = 0; + /* if called after handle_connection_shut_wr hook, shutdown SHUT_WR */ + if (-1 == hctx->close_notify) shutdown(hctx->con->fd, SHUT_WR); + hctx->close_notify = 1; +} + + +CONNECTION_FUNC(mod_openssl_handle_con_shut_wr) +{ + plugin_data *p = p_d; + handler_ctx *hctx = con->plugin_ctx[p->id]; + if (NULL == hctx) return HANDLER_GO_ON; + + hctx->close_notify = -2; + if (SSL_is_init_finished(hctx->ssl)) { + mod_openssl_close_notify(hctx); + } + else { + mod_openssl_detach(hctx); + } + + return HANDLER_GO_ON; +} + + +static int +mod_openssl_close_notify(handler_ctx *hctx) +{ + int ret, ssl_r; + unsigned long err; + log_error_st *errh; + + if (1 == hctx->close_notify) return -2; + + ERR_clear_error(); + switch ((ret = SSL_shutdown(hctx->ssl))) { + case 1: + mod_openssl_detach(hctx); + return -2; + case 0: + /* Drain SSL read buffers in case pending records need processing. + * Limit to reading next record to avoid denial of service when CPU + * processing TLS is slower than arrival speed of TLS data packets. + * (unless hctx->conf.ssl_read_ahead is set) + * + * references: + * + * "New session ticket breaks bidirectional shutdown of TLS 1.3 connection" + * https://github.com/openssl/openssl/issues/6262 + * + * The peer is still allowed to send data after receiving the + * "close notify" event. If the peer did send data it need to be + * processed by calling SSL_read() before calling SSL_shutdown() a + * second time. SSL_read() will indicate the end of the peer data by + * returning <= 0 and SSL_get_error() returning + * SSL_ERROR_ZERO_RETURN. It is recommended to call SSL_read() + * between SSL_shutdown() calls. + * + * Additional discussion in "Auto retry in shutdown" + * https://github.com/openssl/openssl/pull/6340 + */ + ssl_r = SSL_pending(hctx->ssl); + if (ssl_r) { + do { + char buf[4096]; + ret = SSL_read(hctx->ssl, buf, (int)sizeof(buf)); + } while (ret > 0 && (hctx->conf.ssl_read_ahead||(ssl_r-=ret))); + } + + ERR_clear_error(); + switch ((ret = SSL_shutdown(hctx->ssl))) { + case 1: + mod_openssl_detach(hctx); + return -2; + case 0: + hctx->close_notify = -1; + return 0; + default: + break; + } + + /* fall through */ + default: + + if (!SSL_is_init_finished(hctx->ssl)) { + mod_openssl_detach(hctx); + return -2; + } + + switch ((ssl_r = SSL_get_error(hctx->ssl, ret))) { + case SSL_ERROR_ZERO_RETURN: + case SSL_ERROR_WANT_WRITE: + case SSL_ERROR_WANT_READ: + hctx->close_notify = -1; + return 0; /* try again later */ + case SSL_ERROR_SYSCALL: + /* perhaps we have error waiting in our error-queue */ + errh = hctx->r->conf.errh; + if (0 != (err = ERR_get_error())) { + do { + log_error(errh, __FILE__, __LINE__, + "SSL: %d %d %s",ssl_r,ret,ERR_error_string(err,NULL)); + } while((err = ERR_get_error())); + } else if (errno != 0) { + /*ssl bug (see lighttpd ticket #2213): sometimes errno==0*/ + switch(errno) { + case EPIPE: + case ECONNRESET: + break; + default: + log_perror(errh, __FILE__, __LINE__, + "SSL (error): %d %d", ssl_r, ret); + break; + } + } + + break; + default: + errh = hctx->r->conf.errh; + while((err = ERR_get_error())) { + log_error(errh, __FILE__, __LINE__, + "SSL: %d %d %s", ssl_r, ret, ERR_error_string(err, NULL)); + } + + break; + } + } + ERR_clear_error(); + hctx->close_notify = -1; + return ret; +} + + +CONNECTION_FUNC(mod_openssl_handle_con_close) +{ + plugin_data *p = p_d; + handler_ctx *hctx = con->plugin_ctx[p->id]; + if (NULL != hctx) { + con->plugin_ctx[p->id] = NULL; + handler_ctx_free(hctx); + } + + return HANDLER_GO_ON; +} + + +static void +https_add_ssl_client_entries (request_st * const r, handler_ctx * const hctx) +{ + buffer * const tb = r->tmp_buf; + X509 *xs; + X509_NAME *xn; + int i, nentries; + + long vr = SSL_get_verify_result(hctx->ssl); + if (vr != X509_V_OK) { + char errstr[256]; + ERR_error_string_n(vr, errstr, sizeof(errstr)); + buffer_copy_string_len(tb, CONST_STR_LEN("FAILED:")); + buffer_append_string(tb, errstr); + http_header_env_set(r, + CONST_STR_LEN("SSL_CLIENT_VERIFY"), + CONST_BUF_LEN(tb)); + return; + } else if (!(xs = SSL_get_peer_certificate(hctx->ssl))) { + http_header_env_set(r, + CONST_STR_LEN("SSL_CLIENT_VERIFY"), + CONST_STR_LEN("NONE")); + return; + } else { + http_header_env_set(r, + CONST_STR_LEN("SSL_CLIENT_VERIFY"), + CONST_STR_LEN("SUCCESS")); + } + + xn = X509_get_subject_name(xs); + { + char buf[256]; + int len = safer_X509_NAME_oneline(xn, buf, sizeof(buf)); + if (len > 0) { + if (len >= (int)sizeof(buf)) len = (int)sizeof(buf)-1; + http_header_env_set(r, + CONST_STR_LEN("SSL_CLIENT_S_DN"), + buf, (size_t)len); + } + } + buffer_copy_string_len(tb, CONST_STR_LEN("SSL_CLIENT_S_DN_")); + for (i = 0, nentries = X509_NAME_entry_count(xn); i < nentries; ++i) { + int xobjnid; + const char * xobjsn; + X509_NAME_ENTRY *xe; + + if (!(xe = wolfSSL_X509_NAME_get_entry(xn, i))) { + continue; + } + xobjnid = OBJ_obj2nid((ASN1_OBJECT*)X509_NAME_ENTRY_get_object(xe)); + xobjsn = OBJ_nid2sn(xobjnid); + if (xobjsn) { + buffer_string_set_length(tb, sizeof("SSL_CLIENT_S_DN_")-1); + buffer_append_string(tb, xobjsn); + http_header_env_set(r, + CONST_BUF_LEN(tb), + (const char*)X509_NAME_ENTRY_get_data(xe)->data, + X509_NAME_ENTRY_get_data(xe)->length); + } + } + + { + byte buf[64]; + int bsz = (int)sizeof(buf); + if (wolfSSL_X509_get_serial_number(xs, buf, &bsz) == WOLFSSL_SUCCESS) { + char serialHex[128+1]; + li_tohex_uc(serialHex, sizeof(serialHex), (char *)buf, (size_t)bsz); + http_header_env_set(r, + CONST_STR_LEN("SSL_CLIENT_M_SERIAL"), + serialHex, strlen(serialHex)); + } + } + + if (!buffer_string_is_empty(hctx->conf.ssl_verifyclient_username)) { + /* pick one of the exported values as "REMOTE_USER", for example + * ssl.verifyclient.username = "SSL_CLIENT_S_DN_UID" + * or + * ssl.verifyclient.username = "SSL_CLIENT_S_DN_emailAddress" + */ + const buffer *varname = hctx->conf.ssl_verifyclient_username; + const buffer *vb = http_header_env_get(r, CONST_BUF_LEN(varname)); + if (vb) { /* same as http_auth.c:http_auth_setenv() */ + http_header_env_set(r, + CONST_STR_LEN("REMOTE_USER"), + CONST_BUF_LEN(vb)); + http_header_env_set(r, + CONST_STR_LEN("AUTH_TYPE"), + CONST_STR_LEN("SSL_CLIENT_VERIFY")); + } + } + + if (hctx->conf.ssl_verifyclient_export_cert) { + int dersz, pemsz; + const unsigned char *der = wolfSSL_X509_get_der(xs, &dersz); + pemsz = der ? wc_DerToPemEx(der, dersz, NULL, 0, NULL, CERT_TYPE) : 0; + if (pemsz > 0) { + buffer_string_prepare_copy(tb, pemsz); + if (0 == wc_DerToPemEx(der, dersz, (byte *)tb->ptr, pemsz, + NULL, CERT_TYPE)) + http_header_env_set(r, + CONST_STR_LEN("SSL_CLIENT_CERT"), + tb->ptr, (uint32_t)pemsz); + } + } + X509_free(xs); +} + + +static void +http_cgi_ssl_env (request_st * const r, handler_ctx * const hctx) +{ + const char *s; + const SSL_CIPHER *cipher; + + s = SSL_get_version(hctx->ssl); + http_header_env_set(r, CONST_STR_LEN("SSL_PROTOCOL"), s, strlen(s)); + + if ((cipher = SSL_get_current_cipher(hctx->ssl))) { + int usekeysize, algkeysize = 0; + char buf[LI_ITOSTRING_LENGTH]; + s = SSL_CIPHER_get_name(cipher); + http_header_env_set(r, CONST_STR_LEN("SSL_CIPHER"), s, strlen(s)); + usekeysize = wolfSSL_CIPHER_get_bits(cipher, &algkeysize); + if (0 == algkeysize) algkeysize = usekeysize; + http_header_env_set(r, CONST_STR_LEN("SSL_CIPHER_USEKEYSIZE"), + buf, li_itostrn(buf, sizeof(buf), usekeysize)); + http_header_env_set(r, CONST_STR_LEN("SSL_CIPHER_ALGKEYSIZE"), + buf, li_itostrn(buf, sizeof(buf), algkeysize)); + } +} + + +REQUEST_FUNC(mod_openssl_handle_request_env) +{ + plugin_data *p = p_d; + /* simple flag for request_env_patched */ + if (r->plugin_ctx[p->id]) return HANDLER_GO_ON; + handler_ctx *hctx = r->con->plugin_ctx[p->id]; + if (NULL == hctx) return HANDLER_GO_ON; + r->plugin_ctx[p->id] = (void *)(uintptr_t)1u; + + http_cgi_ssl_env(r, hctx); + if (hctx->conf.ssl_verifyclient) { + https_add_ssl_client_entries(r, hctx); + } + + return HANDLER_GO_ON; +} + + +REQUEST_FUNC(mod_openssl_handle_uri_raw) +{ + /* mod_openssl must be loaded prior to mod_auth + * if mod_openssl is configured to set REMOTE_USER based on client cert */ + /* mod_openssl must be loaded after mod_extforward + * if mod_openssl config is based on lighttpd.conf remote IP conditional + * using remote IP address set by mod_extforward, *unless* PROXY protocol + * is enabled with extforward.hap-PROXY = "enable", in which case the + * reverse is true: mod_extforward must be loaded after mod_openssl */ + plugin_data *p = p_d; + handler_ctx *hctx = r->con->plugin_ctx[p->id]; + if (NULL == hctx) return HANDLER_GO_ON; + + mod_openssl_patch_config(r, &hctx->conf); + if (hctx->conf.ssl_verifyclient) { + mod_openssl_handle_request_env(r, p); + } + + return HANDLER_GO_ON; +} + + +REQUEST_FUNC(mod_openssl_handle_request_reset) +{ + plugin_data *p = p_d; + r->plugin_ctx[p->id] = NULL; /* simple flag for request_env_patched */ + return HANDLER_GO_ON; +} + + +TRIGGER_FUNC(mod_openssl_handle_trigger) { + const plugin_data * const p = p_d; + const time_t cur_ts = log_epoch_secs; + if (cur_ts & 0x3f) return HANDLER_GO_ON; /*(continue once each 64 sec)*/ + UNUSED(srv); + UNUSED(p); + + #ifdef HAVE_SESSION_TICKET + mod_openssl_session_ticket_key_check(p, cur_ts); + #endif + + #ifndef OPENSSL_NO_OCSP + mod_openssl_refresh_stapling_files(srv, p, cur_ts); + #endif + + return HANDLER_GO_ON; +} + + +int mod_wolfssl_plugin_init (plugin *p); +int mod_wolfssl_plugin_init (plugin *p) +{ + p->version = LIGHTTPD_VERSION_ID; + p->name = "wolfssl"; + p->init = mod_openssl_init; + p->cleanup = mod_openssl_free; + p->priv_defaults= mod_openssl_set_defaults; + + p->handle_connection_accept = mod_openssl_handle_con_accept; + p->handle_connection_shut_wr = mod_openssl_handle_con_shut_wr; + p->handle_connection_close = mod_openssl_handle_con_close; + p->handle_uri_raw = mod_openssl_handle_uri_raw; + p->handle_request_env = mod_openssl_handle_request_env; + p->handle_request_reset = mod_openssl_handle_request_reset; + p->handle_trigger = mod_openssl_handle_trigger; + + return 0; +} + + +static int +mod_openssl_ssl_conf_proto_val (server *srv, plugin_config_socket *s, const buffer *b, int max) +{ + if (NULL == b) /* default: min TLSv1.2, max TLSv1.3 */ + #ifdef TLS1_3_VERSION + return max ? TLS1_3_VERSION : TLS1_2_VERSION; + #else + return TLS1_2_VERSION; + #endif + else if (buffer_eq_icase_slen(b, CONST_STR_LEN("None"))) /*"disable" limit*/ + return max + ? + #ifdef TLS1_3_VERSION + TLS1_3_VERSION + #else + TLS1_2_VERSION + #endif + : (s->ssl_use_sslv3 ? SSL3_VERSION : TLS1_VERSION); + else if (buffer_eq_icase_slen(b, CONST_STR_LEN("SSLv3"))) + return SSL3_VERSION; + else if (buffer_eq_icase_slen(b, CONST_STR_LEN("TLSv1.0"))) + return TLS1_VERSION; + else if (buffer_eq_icase_slen(b, CONST_STR_LEN("TLSv1.1"))) + return TLS1_1_VERSION; + else if (buffer_eq_icase_slen(b, CONST_STR_LEN("TLSv1.2"))) + return TLS1_2_VERSION; + #ifdef TLS1_3_VERSION + else if (buffer_eq_icase_slen(b, CONST_STR_LEN("TLSv1.3"))) + return TLS1_3_VERSION; + #endif + else { + if (buffer_eq_icase_slen(b, CONST_STR_LEN("DTLSv1")) + || buffer_eq_icase_slen(b, CONST_STR_LEN("DTLSv1.2"))) + log_error(srv->errh, __FILE__, __LINE__, + "SSL: ssl.openssl.ssl-conf-cmd %s %s ignored", + max ? "MaxProtocol" : "MinProtocol", b->ptr); + else + log_error(srv->errh, __FILE__, __LINE__, + "SSL: ssl.openssl.ssl-conf-cmd %s %s invalid; ignored", + max ? "MaxProtocol" : "MinProtocol", b->ptr); + } + #ifdef TLS1_3_VERSION + return max ? TLS1_3_VERSION : TLS1_2_VERSION; + #else + return TLS1_2_VERSION; + #endif +} + + +static int +mod_openssl_ssl_conf_cmd (server *srv, plugin_config_socket *s) +{ + /* reference: + * https://www.openssl.org/docs/man1.1.1/man3/SSL_CONF_cmd.html */ + int rc = 0; + buffer *cipherstring = NULL; + /*buffer *ciphersuites = NULL;*/ + buffer *minb = NULL; + buffer *maxb = NULL; + buffer *curves = NULL; + + for (size_t i = 0; i < s->ssl_conf_cmd->used; ++i) { + data_string *ds = (data_string *)s->ssl_conf_cmd->data[i]; + if (buffer_eq_icase_slen(&ds->key, CONST_STR_LEN("CipherString"))) + cipherstring = &ds->value; + #if 0 + else if (buffer_eq_icase_slen(&ds->key, CONST_STR_LEN("Ciphersuites"))) + ciphersuites = &ds->value; + #endif + else if (buffer_eq_icase_slen(&ds->key, CONST_STR_LEN("Curves")) + || buffer_eq_icase_slen(&ds->key, CONST_STR_LEN("Groups"))) + curves = &ds->value; + else if (buffer_eq_icase_slen(&ds->key, CONST_STR_LEN("MaxProtocol"))) + maxb = &ds->value; + else if (buffer_eq_icase_slen(&ds->key, CONST_STR_LEN("MinProtocol"))) + minb = &ds->value; + else if (buffer_eq_icase_slen(&ds->key, CONST_STR_LEN("Protocol"))) { + /* openssl config for Protocol=... is complex and deprecated */ + log_error(srv->errh, __FILE__, __LINE__, + "SSL: ssl.openssl.ssl-conf-cmd %s ignored; " + "use MinProtocol=... and MaxProtocol=... instead", + ds->key.ptr); + } + else if (buffer_eq_icase_slen(&ds->key, CONST_STR_LEN("Options"))) { + for (char *v = ds->value.ptr, *e; *v; v = e) { + while (*v == ' ' || *v == '\t' || *v == ',') ++v; + int flag = 1; + if (*v == '-') { + flag = 0; + ++v; + } + for (e = v; light_isalpha(*e); ++e) ; + switch ((int)(e-v)) { + case 11: + if (buffer_eq_icase_ssn(v, "Compression", 11)) { + if (flag) + SSL_CTX_clear_options(s->ssl_ctx, + SSL_OP_NO_COMPRESSION); + else + SSL_CTX_set_options(s->ssl_ctx, + SSL_OP_NO_COMPRESSION); + continue; + } + break; + case 13: + if (buffer_eq_icase_ssn(v, "SessionTicket", 13)) { + if (flag) + SSL_CTX_clear_options(s->ssl_ctx, + SSL_OP_NO_TICKET); + else + SSL_CTX_set_options(s->ssl_ctx, + SSL_OP_NO_TICKET); + continue; + } + break; + case 16: + if (buffer_eq_icase_ssn(v, "ServerPreference", 16)) { + if (flag) + SSL_CTX_set_options(s->ssl_ctx, + SSL_OP_CIPHER_SERVER_PREFERENCE); + else + SSL_CTX_clear_options(s->ssl_ctx, + SSL_OP_CIPHER_SERVER_PREFERENCE); + s->ssl_honor_cipher_order = flag; + continue; + } + break; + default: + break; + } + /* warn if not explicitly handled or ignored above */ + if (!flag) --v; + log_error(srv->errh, __FILE__, __LINE__, + "SSL: ssl.openssl.ssl-conf-cmd Options %.*s " + "ignored", (int)(e-v), v); + } + } + #if 0 + else if (buffer_eq_icase_slen(&ds->key, CONST_STR_LEN("..."))) { + } + #endif + else { + /* warn if not explicitly handled or ignored above */ + log_error(srv->errh, __FILE__, __LINE__, + "SSL: ssl.openssl.ssl-conf-cmd %s ignored", + ds->key.ptr); + } + + } + + if (minb) { + int n = mod_openssl_ssl_conf_proto_val(srv, s, minb, 0); + /*(wolfSSL_CTX_SetMinVersion() alt uses enums with different values)*/ + switch (n) { + case SSL3_VERSION: n = WOLFSSL_SSLV3; break; + case TLS1_VERSION: n = WOLFSSL_TLSV1; break; + case TLS1_1_VERSION: n = WOLFSSL_TLSV1_1; break; + case TLS1_2_VERSION: n = WOLFSSL_TLSV1_2; break; + case TLS1_3_VERSION: n = WOLFSSL_TLSV1_3; break; + default: rc = -1; break; + } + if (wolfSSL_CTX_SetMinVersion(s->ssl_ctx, n) != WOLFSSL_SUCCESS) + rc = -1; + } + + if (maxb) { + /* WolfSSL max ver is set at WolfSSL compile-time */ + } + + if (cipherstring) { + /* Disable support for low encryption ciphers */ + buffer_append_string_len(cipherstring, + CONST_STR_LEN(":!aNULL:!eNULL:!EXP")); + if (SSL_CTX_set_cipher_list(s->ssl_ctx, s->ssl_cipher_list->ptr) != 1) { + log_error(srv->errh, __FILE__, __LINE__, + "SSL: %s", ERR_error_string(ERR_get_error(), NULL)); + rc = -1; + } + + if (s->ssl_honor_cipher_order) + SSL_CTX_set_options(s->ssl_ctx, SSL_OP_CIPHER_SERVER_PREFERENCE); + } + + if (curves) { + if (!mod_openssl_ssl_conf_curves(srv, s, curves)) + rc = -1; + } + + return rc; +} @@ -37,16 +37,16 @@ #include <mbedtls/ctr_drbg.h> #include <mbedtls/entropy.h> #endif -#ifdef USE_WOLFSSL_CRYPTO -#undef USE_OPENSSL_CRYPTO -#undef USE_GNUTLS_CRYPTO -#include <wolfssl/wolfcrypt/random.h> -#endif #ifdef USE_OPENSSL_CRYPTO +#undef USE_WOLFSSL_CRYPTO #undef USE_GNUTLS_CRYPTO #include <openssl/opensslv.h> /* OPENSSL_VERSION_NUMBER */ #include <openssl/rand.h> #endif +#ifdef USE_WOLFSSL_CRYPTO +#undef USE_GNUTLS_CRYPTO +#include <wolfssl/wolfcrypt/random.h> +#endif #ifdef USE_GNUTLS_CRYPTO #include <gnutls/crypto.h> #endif diff --git a/src/sys-crypto-md.h b/src/sys-crypto-md.h index b528c256..a3f8b3e6 100644 --- a/src/sys-crypto-md.h +++ b/src/sys-crypto-md.h @@ -144,7 +144,7 @@ SHA256_Update(SHA256_CTX *ctx, const void *data, size_t length) } #endif -#elif defined(USE_WOLFSSL_CRYPTO) +#elif defined(USE_WOLFSSL_CRYPTO) && !defined(USE_OPENSSL_CRYPTO) /* WolfSSL compatibility API for OpenSSL unnecessarily bounces through an extra * layer of indirection. However, to avoid conflicting typedefs when includers @@ -164,12 +164,14 @@ SHA256_Update(SHA256_CTX *ctx, const void *data, size_t length) static inline int MD4_Init(MD4_CTX *ctx) { - return (0 == wc_InitMd4((Md4 *)ctx)); + wc_InitMd4((Md4 *)ctx); + return 1; } static inline int MD4_Final(unsigned char *digest, MD4_CTX *ctx) { - return (0 == wc_Md4Final((Md4 *)ctx, digest)); + wc_Md4Final((Md4 *)ctx, digest); + return 1; } static inline void MD4_Update(MD4_CTX *ctx, const void *data, size_t length) diff --git a/src/sys-crypto.h b/src/sys-crypto.h index 7ea3a29a..4175ee55 100644 --- a/src/sys-crypto.h +++ b/src/sys-crypto.h @@ -7,6 +7,7 @@ #define USE_OPENSSL_CRYPTO #endif +#ifndef USE_OPENSSL_CRYPTO #ifdef HAVE_WOLFSSL_SSL_H #define USE_LIB_CRYPTO #define USE_WOLFSSL_CRYPTO @@ -17,6 +18,7 @@ * for use by lighttpd */ #include <wolfssl/options.h> #endif +#endif #ifdef HAVE_LIBMBEDCRYPTO #define USE_LIB_CRYPTO |