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lighttpd2/src/modules/mod_openssl.c

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/*
* mod_openssl - ssl support
*
* Author:
* Copyright (c) 2009-2013 Stefan Bühler, Joe Presbrey
*/
#include <lighttpd/base.h>
#include <lighttpd/throttle.h>
#include <lighttpd/plugin_core.h>
#include "openssl_filter.h"
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/rand.h>
# ifndef OPENSSL_NO_DH
# include <openssl/dh.h>
# define USE_OPENSSL_DH
static DH* load_dh_params_4096(void);
# endif
#if OPENSSL_VERSION_NUMBER >= 0x0090800fL
# ifndef OPENSSL_NO_ECDH
# include <openssl/ecdh.h>
# define USE_OPENSSL_ECDH
# endif
#endif
LI_API gboolean mod_openssl_init(liModules *mods, liModule *mod);
LI_API gboolean mod_openssl_free(liModules *mods, liModule *mod);
typedef struct openssl_connection_ctx openssl_connection_ctx;
typedef struct openssl_context openssl_context;
struct openssl_connection_ctx {
liConnection *con;
liOpenSSLFilter *ssl_filter;
liIOStream *sock_stream;
gpointer simple_socket_data;
};
struct openssl_context {
gint refcount;
SSL_CTX *ssl_ctx;
};
enum {
SE_CLIENT = 0x1,
SE_CLIENT_CERT = 0x2,
SE_SERVER = 0x4,
SE_SERVER_CERT = 0x8
} HEDLEY_FLAGS;
static openssl_context* mod_openssl_context_new(void) {
openssl_context *ctx = g_slice_new0(openssl_context);
ctx->refcount = 1;
return ctx;
}
static void mod_openssl_context_release(openssl_context *ctx) {
if (NULL == ctx) return;
LI_FORCE_ASSERT(g_atomic_int_get(&ctx->refcount) > 0);
if (g_atomic_int_dec_and_test(&ctx->refcount)) {
if (NULL != ctx->ssl_ctx) {
SSL_CTX_free(ctx->ssl_ctx);
ctx->ssl_ctx = NULL;
}
g_slice_free(openssl_context, ctx);
}
}
static void mod_openssl_context_acquire(openssl_context *ctx) {
LI_FORCE_ASSERT(g_atomic_int_get(&ctx->refcount) > 0);
g_atomic_int_inc(&ctx->refcount);
}
static void tcp_io_cb(liIOStream *stream, liIOStreamEvent event) {
openssl_connection_ctx *conctx = stream->data;
LI_FORCE_ASSERT(NULL == conctx->sock_stream || conctx->sock_stream == stream);
if (LI_IOSTREAM_DESTROY == event) {
li_stream_simple_socket_close(stream, TRUE); /* kill it, ssl sent an close alert message */
}
li_connection_simple_tcp(&conctx->con, stream, &conctx->simple_socket_data, event);
if (NULL != conctx->con && conctx->con->out_has_all_data
&& (NULL == stream->stream_out.out || 0 == stream->stream_out.out->length)
&& li_streams_empty(conctx->con->con_sock.raw_out, NULL)) {
li_stream_simple_socket_flush(stream);
li_connection_request_done(conctx->con);
}
switch (event) {
case LI_IOSTREAM_DESTROY:
LI_FORCE_ASSERT(NULL == conctx->sock_stream);
LI_FORCE_ASSERT(NULL == conctx->ssl_filter);
LI_FORCE_ASSERT(NULL == conctx->con);
stream->data = NULL;
g_slice_free(openssl_connection_ctx, conctx);
return;
default:
break;
}
}
static void handshake_cb(liOpenSSLFilter *f, gpointer data, liStream *plain_source, liStream *plain_drain) {
openssl_connection_ctx *conctx = data;
liConnection *con = conctx->con;
UNUSED(f);
if (NULL != con) {
li_stream_connect(plain_source, con->con_sock.raw_in);
li_stream_connect(con->con_sock.raw_out, plain_drain);
} else {
li_stream_reset(plain_source);
li_stream_reset(plain_drain);
}
}
static void close_cb(liOpenSSLFilter *f, gpointer data) {
openssl_connection_ctx *conctx = data;
liConnection *con = conctx->con;
LI_FORCE_ASSERT(conctx->ssl_filter == f);
conctx->ssl_filter = NULL;
li_openssl_filter_free(f);
if (NULL != conctx->con) {
liStream *raw_out = con->con_sock.raw_out, *raw_in = con->con_sock.raw_in;
LI_FORCE_ASSERT(con->con_sock.data == conctx);
conctx->con = NULL;
con->con_sock.data = NULL;
li_stream_acquire(raw_in);
li_stream_reset(raw_out);
li_stream_reset(raw_in);
li_stream_release(raw_in);
}
if (NULL != conctx->sock_stream) {
liIOStream *stream = conctx->sock_stream;
conctx->sock_stream = NULL;
li_iostream_release(stream);
}
}
static const liOpenSSLFilterCallbacks filter_callbacks = {
handshake_cb,
close_cb
};
static void openssl_tcp_finished(liConnection *con, gboolean aborted) {
openssl_connection_ctx *conctx = con->con_sock.data;
UNUSED(aborted);
con->info.is_ssl = FALSE;
con->con_sock.callbacks = NULL;
if (NULL != conctx) {
LI_FORCE_ASSERT(con == conctx->con);
close_cb(conctx->ssl_filter, conctx);
}
{
liStream *raw_out = con->con_sock.raw_out, *raw_in = con->con_sock.raw_in;
con->con_sock.raw_out = con->con_sock.raw_in = NULL;
if (NULL != raw_out) { li_stream_reset(raw_out); li_stream_release(raw_out); }
if (NULL != raw_in) { li_stream_reset(raw_in); li_stream_release(raw_in); }
}
}
static liThrottleState* openssl_tcp_throttle_out(liConnection *con) {
openssl_connection_ctx *conctx = con->con_sock.data;
if (NULL == conctx) return NULL;
if (NULL == conctx->sock_stream->throttle_out) conctx->sock_stream->throttle_out = li_throttle_new();
return conctx->sock_stream->throttle_out;
}
static liThrottleState* openssl_tcp_throttle_in(liConnection *con) {
openssl_connection_ctx *conctx = con->con_sock.data;
if (NULL == conctx) return NULL;
if (NULL == conctx->sock_stream->throttle_in) conctx->sock_stream->throttle_in = li_throttle_new();
return conctx->sock_stream->throttle_in;
}
static const liConnectionSocketCallbacks openssl_tcp_cbs = {
openssl_tcp_finished,
openssl_tcp_throttle_out,
openssl_tcp_throttle_in
};
static gboolean openssl_con_new(liConnection *con, int fd) {
liEventLoop *loop = &con->wrk->loop;
liServer *srv = con->srv;
openssl_context *ctx = con->srv_sock->data;
openssl_connection_ctx *conctx = g_slice_new0(openssl_connection_ctx);
conctx->sock_stream = li_iostream_new(con->wrk, fd, tcp_io_cb, conctx);
conctx->ssl_filter = li_openssl_filter_new(srv, con->wrk, &filter_callbacks, conctx, ctx->ssl_ctx,
&conctx->sock_stream->stream_in, &conctx->sock_stream->stream_out);
if (NULL == conctx->ssl_filter) {
ERROR(srv, "SSL_new: %s", ERR_error_string(ERR_get_error(), NULL));
fd = li_iostream_reset(conctx->sock_stream);
close(fd);
li_iostream_release(conctx->sock_stream);
g_slice_free(openssl_connection_ctx, conctx);
return FALSE;
}
conctx->con = con;
con->con_sock.data = conctx;
con->con_sock.callbacks = &openssl_tcp_cbs;
con->con_sock.raw_out = li_stream_plug_new(loop);
con->con_sock.raw_in = li_stream_plug_new(loop);
con->info.is_ssl = TRUE;
return TRUE;
}
static void openssl_sock_release(liServerSocket *srv_sock) {
openssl_context *ctx = srv_sock->data;
mod_openssl_context_release(ctx);
}
static void openssl_setenv_X509_add_entries(liVRequest *vr, X509 *x509, const gchar *prefix, guint prefix_len) {
guint i, j;
GString *k = vr->wrk->tmp_str;
X509_NAME *xn = X509_get_subject_name(x509);
X509_NAME_ENTRY *xe;
ASN1_STRING *xes;
const char * xobjsn;
g_string_truncate(k, 0);
g_string_append_len(k, prefix, prefix_len);
for (i = 0, j = X509_NAME_entry_count(xn); i < j; ++i) {
if (!(xe = X509_NAME_get_entry(xn, i))
|| !(xobjsn = OBJ_nid2sn(OBJ_obj2nid((ASN1_OBJECT*)X509_NAME_ENTRY_get_object(xe)))))
continue;
g_string_truncate(k, prefix_len);
g_string_append(k, xobjsn);
xes = X509_NAME_ENTRY_get_data(xe);
li_environment_set(&vr->env, GSTR_LEN(k), (const gchar *)xes->data, xes->length);
}
}
static void openssl_setenv_X509_add_PEM(liVRequest *vr, X509 *x509, const gchar *key, guint key_len) {
gint n;
GString *v = vr->wrk->tmp_str;
BIO *bio;
if (NULL != (bio = BIO_new(BIO_s_mem()))) {
PEM_write_bio_X509(bio, x509);
n = BIO_pending(bio);
g_string_set_size(v, n);
BIO_read(bio, v->str, n);
BIO_free(bio);
li_environment_set(&vr->env, key, key_len, GSTR_LEN(v));
}
}
static liHandlerResult openssl_setenv(liVRequest *vr, gpointer param, gpointer *context) {
liConnection *con;
openssl_connection_ctx *conctx;
SSL *ssl;
X509 *x0=NULL, *x1=NULL;
guint params = GPOINTER_TO_UINT(param);
UNUSED(context);
if (!(con = li_connection_from_vrequest(vr))
|| !(con->srv_sock && con->srv_sock->new_cb == openssl_con_new)
|| !(conctx = con->con_sock.data)
|| !(ssl = li_openssl_filter_ssl(conctx->ssl_filter)))
return LI_HANDLER_GO_ON;
if ((params & SE_CLIENT) && (x1 || (x1 = SSL_get_peer_certificate(ssl))))
openssl_setenv_X509_add_entries(vr, x1, CONST_STR_LEN("SSL_CLIENT_S_DN_"));
if ((params & SE_CLIENT_CERT) && (x1 || (x1 = SSL_get_peer_certificate(ssl))))
openssl_setenv_X509_add_PEM(vr, x1, CONST_STR_LEN("SSL_CLIENT_CERT"));
if ((params & SE_SERVER) && (x0 || (x0 = SSL_get_certificate(ssl))))
openssl_setenv_X509_add_entries(vr, x0, CONST_STR_LEN("SSL_SERVER_S_DN_"));
if ((params & SE_SERVER_CERT) && (x0 || (x0 = SSL_get_certificate(ssl))))
openssl_setenv_X509_add_PEM(vr, x0, CONST_STR_LEN("SSL_SERVER_CERT"));
/* only peer increases ref count */
if (x1) X509_free(x1);
return LI_HANDLER_GO_ON;
}
static const char openssl_setenv_config_error[] = "openssl.setenv expects a string or a list of strings consisting of: client, client-cert, server, server-cert";
static liAction* openssl_setenv_create(liServer *srv, liWorker *wrk, liPlugin* p, liValue *val, gpointer userdata) {
guint params = 0;
UNUSED(srv); UNUSED(wrk); UNUSED(p); UNUSED(userdata);
val = li_value_get_single_argument(val);
if (LI_VALUE_STRING == li_value_type(val)) {
li_value_wrap_in_list(val);
}
if (LI_VALUE_LIST != li_value_type(val)) {
ERROR(srv, "%s", openssl_setenv_config_error);
return NULL;
}
LI_VALUE_FOREACH(v, val)
if (LI_VALUE_STRING != li_value_type(v)) {
ERROR(srv, "%s", openssl_setenv_config_error);
return NULL;
}
if (li_strncase_equal(v->data.string, CONST_STR_LEN("client"))) {
params |= SE_CLIENT;
} else if (li_strncase_equal(v->data.string, CONST_STR_LEN("client-cert"))) {
params |= SE_CLIENT_CERT;
} else if (li_strncase_equal(v->data.string, CONST_STR_LEN("server"))) {
params |= SE_SERVER;
} else if (li_strncase_equal(v->data.string, CONST_STR_LEN("server-cert"))) {
params |= SE_SERVER_CERT;
} else {
ERROR(srv, "%s", openssl_setenv_config_error);
return NULL;
}
LI_VALUE_END_FOREACH()
return li_action_new_function(openssl_setenv, NULL, NULL, GUINT_TO_POINTER(params));
}
static void openssl_setup_listen_cb(liServer *srv, int fd, gpointer data) {
openssl_context *ctx = data;
liServerSocket *srv_sock;
UNUSED(data);
if (-1 == fd) {
mod_openssl_context_release(ctx);
return;
}
srv_sock = li_server_listen(srv, fd);
srv_sock->data = ctx;
srv_sock->new_cb = openssl_con_new;
srv_sock->release_cb = openssl_sock_release;
}
static gboolean openssl_options_set_string(long *options, GString *s) {
#define S(s) CONST_STR_LEN(s)
static const struct {
char *name; /* without "NO_" prefix */
guint name_len;
long value;
char positive; /* 0 means option is usually prefixed with "NO_"; otherwise use 1 */
} option_table[] = {
#ifdef SSL_OP_MICROSOFT_SESS_ID_BUG
{S("MICROSOFT_SESS_ID_BUG"), SSL_OP_MICROSOFT_SESS_ID_BUG, 1},
#endif
#ifdef SSL_OP_NETSCAPE_CHALLENGE_BUG
{S("NETSCAPE_CHALLENGE_BUG"), SSL_OP_NETSCAPE_CHALLENGE_BUG, 1},
#endif
#ifdef SSL_OP_LEGACY_SERVER_CONNECT
{S("LEGACY_SERVER_CONNECT"), SSL_OP_LEGACY_SERVER_CONNECT, 1},
#endif
#ifdef SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
{S("NETSCAPE_REUSE_CIPHER_CHANGE_BUG"), SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG, 1},
#endif
#ifdef SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG
{S("SSLREF2_REUSE_CERT_TYPE_BUG"), SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG, 1},
#endif
#ifdef SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER
{S("MICROSOFT_BIG_SSLV3_BUFFER"), SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER, 1},
#endif
#ifdef SSL_OP_MSIE_SSLV2_RSA_PADDING
{S("MSIE_SSLV2_RSA_PADDING"), SSL_OP_MSIE_SSLV2_RSA_PADDING, 1},
#endif
#ifdef SSL_OP_SSLEAY_080_CLIENT_DH_BUG
{S("SSLEAY_080_CLIENT_DH_BUG"), SSL_OP_SSLEAY_080_CLIENT_DH_BUG, 1},
#endif
#ifdef SSL_OP_TLS_D5_BUG
{S("TLS_D5_BUG"), SSL_OP_TLS_D5_BUG, 1},
#endif
#ifdef SSL_OP_TLS_BLOCK_PADDING_BUG
{S("TLS_BLOCK_PADDING_BUG"), SSL_OP_TLS_BLOCK_PADDING_BUG, 1},
#endif
#ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
{S("DONT_INSERT_EMPTY_FRAGMENTS"), SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS, 1},
#endif
#ifdef SSL_OP_ALL
{S("ALL"), SSL_OP_ALL, 1},
#endif
#ifdef SSL_OP_NO_QUERY_MTU
{S("QUERY_MTU"), SSL_OP_NO_QUERY_MTU, 0},
#endif
#ifdef SSL_OP_COOKIE_EXCHANGE
{S("COOKIE_EXCHANGE"), SSL_OP_COOKIE_EXCHANGE, 1},
#endif
#ifdef SSL_OP_NO_TICKET
{S("TICKET"), SSL_OP_NO_TICKET, 0},
#endif
#ifdef SSL_OP_CISCO_ANYCONNECT
{S("CISCO_ANYCONNECT"), SSL_OP_CISCO_ANYCONNECT, 1},
#endif
#ifdef SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
{S("SESSION_RESUMPTION_ON_RENEGOTIATION"), SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
#endif
#ifdef SSL_OP_NO_COMPRESSION
{S("COMPRESSION"), SSL_OP_NO_COMPRESSION, 0},
#endif
#ifdef SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
{S("ALLOW_UNSAFE_LEGACY_RENEGOTIATION"), SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 1},
#endif
#ifdef SSL_OP_SINGLE_ECDH_USE
{S("SINGLE_ECDH_USE"), SSL_OP_SINGLE_ECDH_USE, 1},
#endif
#ifdef SSL_OP_SINGLE_DH_USE
{S("SINGLE_DH_USE"), SSL_OP_SINGLE_DH_USE, 1},
#endif
#ifdef SSL_OP_EPHEMERAL_RSA
{S("EPHEMERAL_RSA"), SSL_OP_EPHEMERAL_RSA, 1},
#endif
#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
{S("CIPHER_SERVER_PREFERENCE"), SSL_OP_CIPHER_SERVER_PREFERENCE, 1},
#endif
#ifdef SSL_OP_TLS_ROLLBACK_BUG
{S("TLS_ROLLBACK_BUG"), SSL_OP_TLS_ROLLBACK_BUG, 1},
#endif
#ifdef SSL_OP_NO_SSLv2
{S("SSLv2"), SSL_OP_NO_SSLv2, 0},
#endif
#ifdef SSL_OP_NO_SSLv3
{S("SSLv3"), SSL_OP_NO_SSLv3, 0},
#endif
#ifdef SSL_OP_NO_TLSv1
{S("TLSv1"), SSL_OP_NO_TLSv1, 0},
#endif
#ifdef SSL_OP_NO_TLSv1_1
{S("TLSv1_1"), SSL_OP_NO_TLSv1_1, 0},
#endif
#ifdef SSL_OP_NO_TLSv1_2
{S("TLSv1_2"), SSL_OP_NO_TLSv1_2, 0},
#endif
#ifdef SSL_OP_NO_TLSv1_3
{S("TLSv1_3"), SSL_OP_NO_TLSv1_3, 0},
#endif
#ifdef SSL_OP_PKCS1_CHECK_1
{S("PKCS1_CHECK_1"), SSL_OP_PKCS1_CHECK_1, 1},
#endif
#ifdef SSL_OP_PKCS1_CHECK_2
{S("PKCS1_CHECK_2"), SSL_OP_PKCS1_CHECK_2, 1},
#endif
#ifdef SSL_OP_NETSCAPE_CA_DN_BUG
{S("NETSCAPE_CA_DN_BUG"), SSL_OP_NETSCAPE_CA_DN_BUG, 1},
#endif
#ifdef SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG
{S("NETSCAPE_DEMO_CIPHER_CHANGE_BUG"), SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG, 1},
#endif
#ifdef SSL_OP_CRYPTOPRO_TLSEXT_BUG
{S("CRYPTOPRO_TLSEXT_BUG"), SSL_OP_CRYPTOPRO_TLSEXT_BUG, 1},
#endif
#undef S
};
GString key = *s;
guint i;
char positive = 1;
if (0 == g_ascii_strncasecmp(key.str, CONST_STR_LEN("NO_"))) {
key.str += 3;
key.len -= 3;
positive = 0;
}
for (i = 0; i < G_N_ELEMENTS(option_table); i++) {
if (option_table[i].name_len == key.len && 0 == g_ascii_strcasecmp(key.str, option_table[i].name)) {
if (option_table[i].positive == positive) {
*options |= option_table[i].value;
} else {
*options &= ~option_table[i].value;
}
return TRUE;
}
}
return FALSE;
}
static int openssl_verify_any_cb(int ok, X509_STORE_CTX *ctx) { UNUSED(ok); UNUSED(ctx); return 1; }
static gboolean openssl_setup(liServer *srv, liPlugin* p, liValue *val, gpointer userdata) {
openssl_context *ctx;
STACK_OF(X509_NAME) *client_ca_list;
const char
*default_ciphers = "HIGH !aNULL !3DES +kEDH +kRSA !kSRP !kPSK",
*default_ecdh_curve = "prime256v1";
/* setup defaults */
gboolean
have_listen_parameter = FALSE,
have_options_parameter = FALSE,
have_verify_parameter = FALSE,
have_verify_depth_parameter = FALSE,
have_verify_any_parameter = FALSE,
have_verify_require_parameter = FALSE;
const char
*ciphers = NULL, *pemfile = NULL, *ca_file = NULL, *client_ca_file = NULL, *dh_params_file = NULL, *ecdh_curve = NULL;
long
options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_CIPHER_SERVER_PREFERENCE | SSL_OP_SINGLE_DH_USE
#ifdef SSL_OP_NO_COMPRESSION
| SSL_OP_NO_COMPRESSION
#endif
#ifdef USE_OPENSSL_ECDH
| SSL_OP_SINGLE_ECDH_USE
#endif
;
guint
verify_mode = 0, verify_depth = 1;
gboolean
verify_any = FALSE;
UNUSED(p); UNUSED(userdata);
val = li_value_get_single_argument(val);
if (NULL == (val = li_value_to_key_value_list(val))) {
ERROR(srv, "%s", "openssl expects a hash/key-value list as parameter");
return FALSE;
}
LI_VALUE_FOREACH(entry, val)
liValue *entryKey = li_value_list_at(entry, 0);
liValue *entryValue = li_value_list_at(entry, 1);
GString *entryKeyStr;
if (LI_VALUE_STRING != li_value_type(entryKey)) {
ERROR(srv, "%s", "openssl doesn't take default keys");
return FALSE;
}
entryKeyStr = entryKey->data.string; /* keys are either NONE or STRING */
if (g_str_equal(entryKeyStr->str, "listen")) {
if (LI_VALUE_STRING != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl listen expects a string as parameter");
return FALSE;
}
have_listen_parameter = TRUE;
} else if (g_str_equal(entryKeyStr->str, "pemfile")) {
if (LI_VALUE_STRING != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl pemfile expects a string as parameter");
return FALSE;
}
if (NULL != pemfile) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
pemfile = entryValue->data.string->str;
} else if (g_str_equal(entryKeyStr->str, "ca-file")) {
if (LI_VALUE_STRING != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl ca-file expects a string as parameter");
return FALSE;
}
if (NULL != ca_file) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
ca_file = entryValue->data.string->str;
} else if (g_str_equal(entryKeyStr->str, "ciphers")) {
if (LI_VALUE_STRING != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl ciphers expects a string as parameter");
return FALSE;
}
if (NULL != ciphers) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
ciphers = entryValue->data.string->str;
} else if (g_str_equal(entryKeyStr->str, "dh-params")) {
#ifndef USE_OPENSSL_DH
WARNING(srv, "%s", "the openssl library in use doesn't support DH => dh-params has no effect");
#endif
if (LI_VALUE_STRING != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl dh-params expects a string as parameter");
return FALSE;
}
if (NULL != dh_params_file) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
dh_params_file = entryValue->data.string->str;
} else if (g_str_equal(entryKeyStr->str, "ecdh-curve")) {
#ifndef USE_OPENSSL_ECDH
WARNING(srv, "%s", "the openssl library in use doesn't support ECDH => ecdh-curve has no effect");
#endif
if (LI_VALUE_STRING != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl ecdh-curve expects a string as parameter");
return FALSE;
}
if (NULL != ecdh_curve) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
ecdh_curve = entryValue->data.string->str;
} else if (g_str_equal(entryKeyStr->str, "options")) {
/* accept single parameter too */
if (LI_VALUE_STRING == li_value_type(entryValue)) li_value_wrap_in_list(entryValue);
if (LI_VALUE_LIST != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl options expects a list of strings as parameter");
return FALSE;
}
if (have_options_parameter) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
have_options_parameter = TRUE;
LI_VALUE_FOREACH(v, entryValue)
if (LI_VALUE_STRING != li_value_type(v)) {
ERROR(srv, "%s", "openssl options expects a list of strings as parameter");
return FALSE;
}
if (!openssl_options_set_string(&options, v->data.string)) {
ERROR(srv, "openssl option unknown: %s", v->data.string->str);
return FALSE;
}
LI_VALUE_END_FOREACH()
} else if (g_str_equal(entryKeyStr->str, "verify")) {
if (LI_VALUE_BOOLEAN != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl verify expects a boolean as parameter");
return FALSE;
}
if (have_verify_parameter) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
have_verify_parameter = TRUE;
if (entryValue->data.boolean)
verify_mode |= SSL_VERIFY_PEER;
} else if (g_str_equal(entryKeyStr->str, "verify-any")) {
if (LI_VALUE_BOOLEAN != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl verify-any expects a boolean as parameter");
return FALSE;
}
if (have_verify_any_parameter) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
have_verify_any_parameter = TRUE;
verify_any = entryValue->data.boolean;
} else if (g_str_equal(entryKeyStr->str, "verify-depth")) {
if (LI_VALUE_NUMBER != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl verify-depth expects a number as parameter");
return FALSE;
}
if (have_verify_depth_parameter) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
have_verify_depth_parameter = TRUE;
verify_depth = entryValue->data.number;
} else if (g_str_equal(entryKeyStr->str, "verify-require")) {
if (LI_VALUE_BOOLEAN != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl verify-require expects a boolean as parameter");
return FALSE;
}
if (have_verify_require_parameter) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
have_verify_require_parameter = TRUE;
if (entryValue->data.boolean)
verify_mode |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
} else if (g_str_equal(entryKeyStr->str, "client-ca-file")) {
if (LI_VALUE_STRING != li_value_type(entryValue)) {
ERROR(srv, "%s", "openssl client-ca-file expects a string as parameter");
return FALSE;
}
if (NULL != client_ca_file) {
ERROR(srv, "openssl unexpected duplicate parameter %s", entryKeyStr->str);
return FALSE;
}
client_ca_file = entryValue->data.string->str;
} else {
ERROR(srv, "invalid parameter for openssl: %s", entryKeyStr->str);
return FALSE;
}
LI_VALUE_END_FOREACH()
if (!have_listen_parameter) {
ERROR(srv, "%s", "openssl needs a listen parameter");
return FALSE;
}
if (NULL == pemfile) {
ERROR(srv, "%s", "openssl needs a pemfile");
return FALSE;
}
ctx = mod_openssl_context_new();
if (NULL == (ctx->ssl_ctx = SSL_CTX_new(SSLv23_server_method()))) {
ERROR(srv, "SSL_CTX_new: %s", ERR_error_string(ERR_get_error(), NULL));
goto error_free_socket;
}
if (!SSL_CTX_set_options(ctx->ssl_ctx, options)) {
ERROR(srv, "SSL_CTX_set_options(%lx): %s", options, ERR_error_string(ERR_get_error(), NULL));
goto error_free_socket;
}
if (NULL == ciphers) ciphers = default_ciphers;
if (SSL_CTX_set_cipher_list(ctx->ssl_ctx, ciphers) != 1) {
ERROR(srv, "SSL_CTX_set_cipher_list('%s'): %s", ciphers, ERR_error_string(ERR_get_error(), NULL));
goto error_free_socket;
}
#ifdef USE_OPENSSL_DH
{
DH *dh;
BIO *bio;
/* Support for Diffie-Hellman key exchange */
if (NULL != dh_params_file) {
/* DH parameters from file */
bio = BIO_new_file(dh_params_file, "r");
if (bio == NULL) {
ERROR(srv,"SSL: BIO_new_file('%s'): unable to open file", dh_params_file);
goto error_free_socket;
}
dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
BIO_free(bio);
if (NULL == dh) {
ERROR(srv, "SSL: PEM_read_bio_DHparams failed (for file '%s')", dh_params_file);
goto error_free_socket;
}
} else {
dh = load_dh_params_4096();
if (NULL == dh) {
ERROR(srv, "%s", "SSL: loading default DH parameters failed");
goto error_free_socket;
}
}
SSL_CTX_set_tmp_dh(ctx->ssl_ctx, dh);
DH_free(dh);
}
#endif
#ifdef USE_OPENSSL_ECDH
{
EC_KEY *ecdh;
int ecdh_nid;
if (NULL == ecdh_curve) ecdh_curve = default_ecdh_curve;
ecdh_nid = OBJ_sn2nid(ecdh_curve);
if (NID_undef == ecdh_nid) {
ERROR(srv, "SSL: Unknown curve name '%s'", ecdh_curve);
goto error_free_socket;
}
ecdh = EC_KEY_new_by_curve_name(ecdh_nid);
if (NULL == ecdh) {
ERROR(srv, "SSL: Unable to create curve '%s'", ecdh_curve);
goto error_free_socket;
}
SSL_CTX_set_tmp_ecdh(ctx->ssl_ctx, ecdh);
EC_KEY_free(ecdh);
}
#else
UNUSED(default_ecdh_curve);
#endif
if (NULL != ca_file) {
if (1 != SSL_CTX_load_verify_locations(ctx->ssl_ctx, ca_file, NULL)) {
ERROR(srv, "SSL_CTX_load_verify_locations('%s'): %s", ca_file, ERR_error_string(ERR_get_error(), NULL));
goto error_free_socket;
}
}
if (SSL_CTX_use_certificate_file(ctx->ssl_ctx, pemfile, SSL_FILETYPE_PEM) < 0) {
ERROR(srv, "SSL_CTX_use_certificate_file('%s'): %s", pemfile,
ERR_error_string(ERR_get_error(), NULL));
goto error_free_socket;
}
if (SSL_CTX_use_PrivateKey_file (ctx->ssl_ctx, pemfile, SSL_FILETYPE_PEM) < 0) {
ERROR(srv, "SSL_CTX_use_PrivateKey_file('%s'): %s", pemfile,
ERR_error_string(ERR_get_error(), NULL));
goto error_free_socket;
}
if (SSL_CTX_check_private_key(ctx->ssl_ctx) != 1) {
ERROR(srv, "SSL: Private key '%s' does not match the certificate public key, reason: %s", pemfile,
ERR_error_string(ERR_get_error(), NULL));
goto error_free_socket;
}
if (SSL_CTX_set_session_id_context(ctx->ssl_ctx, CONST_USTR_LEN("lighttpd")) != 1) {
ERROR(srv, "SSL_CTX_set_session_id_context(): %s", ERR_error_string(ERR_get_error(), NULL));
goto error_free_socket;
}
if (verify_mode) {
SSL_CTX_set_verify(ctx->ssl_ctx, verify_mode, verify_any ? openssl_verify_any_cb : NULL);
SSL_CTX_set_verify_depth(ctx->ssl_ctx, verify_depth);
}
if (NULL != client_ca_file) {
if (SSL_CTX_load_verify_locations(ctx->ssl_ctx, client_ca_file, NULL) != 1) {
ERROR(srv, "SSL_CTX_load_verify_locations('%s'): %s", client_ca_file, ERR_error_string(ERR_get_error(), NULL));
goto error_free_socket;
}
if ((client_ca_list = SSL_load_client_CA_file(client_ca_file)) == NULL) {
ERROR(srv, "SSL_load_client_CA_file('%s'): %s", client_ca_file, ERR_error_string(ERR_get_error(), NULL));
goto error_free_socket;
}
SSL_CTX_set_client_CA_list(ctx->ssl_ctx, client_ca_list);
}
SSL_CTX_set_default_read_ahead(ctx->ssl_ctx, 1);
SSL_CTX_set_mode(ctx->ssl_ctx, SSL_CTX_get_mode(ctx->ssl_ctx) | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
LI_VALUE_FOREACH(entry, val)
liValue *entryKey = li_value_list_at(entry, 0);
liValue *entryValue = li_value_list_at(entry, 1);
GString *entryKeyStr;
if (LI_VALUE_STRING != li_value_type(entryKey)) continue;
entryKeyStr = entryKey->data.string; /* keys are either NONE or STRING */
if (g_str_equal(entryKeyStr->str, "listen")) {
mod_openssl_context_acquire(ctx);
li_angel_listen(srv, entryValue->data.string, openssl_setup_listen_cb, ctx);
}
LI_VALUE_END_FOREACH()
mod_openssl_context_release(ctx);
return TRUE;
error_free_socket:
mod_openssl_context_release(ctx);
return FALSE;
}
static const liPluginOption options[] = {
{ NULL, 0, 0, NULL }
};
static const liPluginAction actions[] = {
{ "openssl.setenv", openssl_setenv_create, NULL },
{ NULL, NULL, NULL }
};
static const liPluginSetup setups[] = {
{ "openssl", openssl_setup, NULL },
{ NULL, NULL, NULL }
};
static void plugin_init(liServer *srv, liPlugin *p, gpointer userdata) {
UNUSED(srv); UNUSED(userdata);
p->options = options;
p->actions = actions;
p->setups = setups;
}
#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
static GMutex** ssl_locks;
static void ssl_lock_cb(int mode, int n, const char *file, int line) {
UNUSED(file);
UNUSED(line);
if (mode & CRYPTO_LOCK) {
g_mutex_lock(ssl_locks[n]);
} else if (mode & CRYPTO_UNLOCK) {
g_mutex_unlock(ssl_locks[n]);
}
}
static unsigned long ssl_id_cb(void) {
return (intptr_t) g_thread_self();
}
static void sslthread_init(void) {
int n = CRYPTO_num_locks(), i;
ssl_locks = g_slice_alloc0(sizeof(GMutex*) * n);
for (i = 0; i < n; i++) {
ssl_locks[i] = g_mutex_new();
}
CRYPTO_set_locking_callback(ssl_lock_cb);
CRYPTO_set_id_callback(ssl_id_cb);
}
static void sslthread_free(void) {
int n = CRYPTO_num_locks(), i;
for (i = 0; i < n; i++) {
g_mutex_free(ssl_locks[i]);
}
g_slice_free1(sizeof(GMutex*) * n, ssl_locks);
}
#else
static void sslthread_init(void) {
}
static void sslthread_free(void) {
}
#endif
gboolean mod_openssl_init(liModules *mods, liModule *mod) {
MODULE_VERSION_CHECK(mods);
sslthread_init();
SSL_load_error_strings();
SSL_library_init();
OpenSSL_add_all_algorithms();
if (0 == RAND_status()) {
ERROR(mods->main, "SSL: %s", "not enough entropy in the pool");
return FALSE;
}
mod->config = li_plugin_register(mods->main, "mod_openssl", plugin_init, NULL);
return mod->config != NULL;
}
gboolean mod_openssl_free(liModules *mods, liModule *mod) {
if (mod->config)
li_plugin_free(mods->main, mod->config);
ERR_free_strings();
sslthread_free();
return TRUE;
}
#ifdef USE_OPENSSL_DH
static DH* load_dh_params_4096(void) {
static const unsigned char dh4096_p[]={
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xC9,0x0F,0xDA,0xA2,
0x21,0x68,0xC2,0x34,0xC4,0xC6,0x62,0x8B,0x80,0xDC,0x1C,0xD1,
0x29,0x02,0x4E,0x08,0x8A,0x67,0xCC,0x74,0x02,0x0B,0xBE,0xA6,
0x3B,0x13,0x9B,0x22,0x51,0x4A,0x08,0x79,0x8E,0x34,0x04,0xDD,
0xEF,0x95,0x19,0xB3,0xCD,0x3A,0x43,0x1B,0x30,0x2B,0x0A,0x6D,
0xF2,0x5F,0x14,0x37,0x4F,0xE1,0x35,0x6D,0x6D,0x51,0xC2,0x45,
0xE4,0x85,0xB5,0x76,0x62,0x5E,0x7E,0xC6,0xF4,0x4C,0x42,0xE9,
0xA6,0x37,0xED,0x6B,0x0B,0xFF,0x5C,0xB6,0xF4,0x06,0xB7,0xED,
0xEE,0x38,0x6B,0xFB,0x5A,0x89,0x9F,0xA5,0xAE,0x9F,0x24,0x11,
0x7C,0x4B,0x1F,0xE6,0x49,0x28,0x66,0x51,0xEC,0xE4,0x5B,0x3D,
0xC2,0x00,0x7C,0xB8,0xA1,0x63,0xBF,0x05,0x98,0xDA,0x48,0x36,
0x1C,0x55,0xD3,0x9A,0x69,0x16,0x3F,0xA8,0xFD,0x24,0xCF,0x5F,
0x83,0x65,0x5D,0x23,0xDC,0xA3,0xAD,0x96,0x1C,0x62,0xF3,0x56,
0x20,0x85,0x52,0xBB,0x9E,0xD5,0x29,0x07,0x70,0x96,0x96,0x6D,
0x67,0x0C,0x35,0x4E,0x4A,0xBC,0x98,0x04,0xF1,0x74,0x6C,0x08,
0xCA,0x18,0x21,0x7C,0x32,0x90,0x5E,0x46,0x2E,0x36,0xCE,0x3B,
0xE3,0x9E,0x77,0x2C,0x18,0x0E,0x86,0x03,0x9B,0x27,0x83,0xA2,
0xEC,0x07,0xA2,0x8F,0xB5,0xC5,0x5D,0xF0,0x6F,0x4C,0x52,0xC9,
0xDE,0x2B,0xCB,0xF6,0x95,0x58,0x17,0x18,0x39,0x95,0x49,0x7C,
0xEA,0x95,0x6A,0xE5,0x15,0xD2,0x26,0x18,0x98,0xFA,0x05,0x10,
0x15,0x72,0x8E,0x5A,0x8A,0xAA,0xC4,0x2D,0xAD,0x33,0x17,0x0D,
0x04,0x50,0x7A,0x33,0xA8,0x55,0x21,0xAB,0xDF,0x1C,0xBA,0x64,
0xEC,0xFB,0x85,0x04,0x58,0xDB,0xEF,0x0A,0x8A,0xEA,0x71,0x57,
0x5D,0x06,0x0C,0x7D,0xB3,0x97,0x0F,0x85,0xA6,0xE1,0xE4,0xC7,
0xAB,0xF5,0xAE,0x8C,0xDB,0x09,0x33,0xD7,0x1E,0x8C,0x94,0xE0,
0x4A,0x25,0x61,0x9D,0xCE,0xE3,0xD2,0x26,0x1A,0xD2,0xEE,0x6B,
0xF1,0x2F,0xFA,0x06,0xD9,0x8A,0x08,0x64,0xD8,0x76,0x02,0x73,
0x3E,0xC8,0x6A,0x64,0x52,0x1F,0x2B,0x18,0x17,0x7B,0x20,0x0C,
0xBB,0xE1,0x17,0x57,0x7A,0x61,0x5D,0x6C,0x77,0x09,0x88,0xC0,
0xBA,0xD9,0x46,0xE2,0x08,0xE2,0x4F,0xA0,0x74,0xE5,0xAB,0x31,
0x43,0xDB,0x5B,0xFC,0xE0,0xFD,0x10,0x8E,0x4B,0x82,0xD1,0x20,
0xA9,0x21,0x08,0x01,0x1A,0x72,0x3C,0x12,0xA7,0x87,0xE6,0xD7,
0x88,0x71,0x9A,0x10,0xBD,0xBA,0x5B,0x26,0x99,0xC3,0x27,0x18,
0x6A,0xF4,0xE2,0x3C,0x1A,0x94,0x68,0x34,0xB6,0x15,0x0B,0xDA,
0x25,0x83,0xE9,0xCA,0x2A,0xD4,0x4C,0xE8,0xDB,0xBB,0xC2,0xDB,
0x04,0xDE,0x8E,0xF9,0x2E,0x8E,0xFC,0x14,0x1F,0xBE,0xCA,0xA6,
0x28,0x7C,0x59,0x47,0x4E,0x6B,0xC0,0x5D,0x99,0xB2,0x96,0x4F,
0xA0,0x90,0xC3,0xA2,0x23,0x3B,0xA1,0x86,0x51,0x5B,0xE7,0xED,
0x1F,0x61,0x29,0x70,0xCE,0xE2,0xD7,0xAF,0xB8,0x1B,0xDD,0x76,
0x21,0x70,0x48,0x1C,0xD0,0x06,0x91,0x27,0xD5,0xB0,0x5A,0xA9,
0x93,0xB4,0xEA,0x98,0x8D,0x8F,0xDD,0xC1,0x86,0xFF,0xB7,0xDC,
0x90,0xA6,0xC0,0x8F,0x4D,0xF4,0x35,0xC9,0x34,0x06,0x31,0x99,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
};
static const unsigned char dh4096_g[]={
0x05,
};
BIGNUM *dh_p, *dh_g;
DH *dh;
dh = DH_new();
if (NULL == dh) return NULL;
dh_p = BN_bin2bn(dh4096_p, sizeof(dh4096_p), NULL);
dh_g = BN_bin2bn(dh4096_g, sizeof(dh4096_g), NULL);
if (NULL == dh_p || NULL == dh_g) {
BN_free(dh_p);
BN_free(dh_g);
DH_free(dh);
return NULL;
}
#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
dh->p = dh_p;
dh->g = dh_g;
#else
DH_set0_pqg(dh, dh_p, NULL, dh_g);
#endif
return dh;
}
#endif
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