diff options
Diffstat (limited to 'src/stream/ngx_stream_ssl_module.c')
| -rw-r--r-- | src/stream/ngx_stream_ssl_module.c | 127 |
1 files changed, 124 insertions, 3 deletions
diff --git a/src/stream/ngx_stream_ssl_module.c b/src/stream/ngx_stream_ssl_module.c index 74a727797..7fb363a5c 100644 --- a/src/stream/ngx_stream_ssl_module.c +++ b/src/stream/ngx_stream_ssl_module.c @@ -23,7 +23,13 @@ static ngx_int_t ngx_stream_ssl_init_connection(ngx_ssl_t *ssl, ngx_connection_t *c); static void ngx_stream_ssl_handshake_handler(ngx_connection_t *c); #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME -int ngx_stream_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg); +static int ngx_stream_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, + void *arg); +#endif +#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation +static int ngx_stream_ssl_alpn_select(ngx_ssl_conn_t *ssl_conn, + const unsigned char **out, unsigned char *outlen, + const unsigned char *in, unsigned int inlen, void *arg); #endif #ifdef SSL_R_CERT_CB_ERROR static int ngx_stream_ssl_certificate(ngx_ssl_conn_t *ssl_conn, void *arg); @@ -45,6 +51,8 @@ static char *ngx_stream_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_stream_ssl_session_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); +static char *ngx_stream_ssl_alpn(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); static char *ngx_stream_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data); @@ -211,6 +219,13 @@ static ngx_command_t ngx_stream_ssl_commands[] = { offsetof(ngx_stream_ssl_conf_t, conf_commands), &ngx_stream_ssl_conf_command_post }, + { ngx_string("ssl_alpn"), + NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_1MORE, + ngx_stream_ssl_alpn, + NGX_STREAM_SRV_CONF_OFFSET, + 0, + NULL }, + ngx_null_command }; @@ -266,6 +281,9 @@ static ngx_stream_variable_t ngx_stream_ssl_vars[] = { { ngx_string("ssl_server_name"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_server_name, NGX_STREAM_VAR_CHANGEABLE, 0 }, + { ngx_string("ssl_alpn_protocol"), NULL, ngx_stream_ssl_variable, + (uintptr_t) ngx_ssl_get_alpn_protocol, NGX_STREAM_VAR_CHANGEABLE, 0 }, + { ngx_string("ssl_client_cert"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_certificate, NGX_STREAM_VAR_CHANGEABLE, 0 }, @@ -434,7 +452,7 @@ ngx_stream_ssl_handshake_handler(ngx_connection_t *c) #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME -int +static int ngx_stream_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg) { return SSL_TLSEXT_ERR_OK; @@ -443,9 +461,49 @@ ngx_stream_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg) #endif +#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation + +static int +ngx_stream_ssl_alpn_select(ngx_ssl_conn_t *ssl_conn, const unsigned char **out, + unsigned char *outlen, const unsigned char *in, unsigned int inlen, + void *arg) +{ + ngx_str_t *alpn; +#if (NGX_DEBUG) + unsigned int i; + ngx_connection_t *c; + + c = ngx_ssl_get_connection(ssl_conn); + + for (i = 0; i < inlen; i += in[i] + 1) { + ngx_log_debug2(NGX_LOG_DEBUG_STREAM, c->log, 0, + "SSL ALPN supported by client: %*s", + (size_t) in[i], &in[i + 1]); + } + +#endif + + alpn = arg; + + if (SSL_select_next_proto((unsigned char **) out, outlen, alpn->data, + alpn->len, in, inlen) + != OPENSSL_NPN_NEGOTIATED) + { + return SSL_TLSEXT_ERR_ALERT_FATAL; + } + + ngx_log_debug2(NGX_LOG_DEBUG_STREAM, c->log, 0, + "SSL ALPN selected: %*s", (size_t) *outlen, *out); + + return SSL_TLSEXT_ERR_OK; +} + +#endif + + #ifdef SSL_R_CERT_CB_ERROR -int +static int ngx_stream_ssl_certificate(ngx_ssl_conn_t *ssl_conn, void *arg) { ngx_str_t cert, key; @@ -602,6 +660,7 @@ ngx_stream_ssl_create_conf(ngx_conf_t *cf) * scf->client_certificate = { 0, NULL }; * scf->trusted_certificate = { 0, NULL }; * scf->crl = { 0, NULL }; + * scf->alpn = { 0, NULL }; * scf->ciphers = { 0, NULL }; * scf->shm_zone = NULL; */ @@ -660,6 +719,7 @@ ngx_stream_ssl_merge_conf(ngx_conf_t *cf, void *parent, void *child) ngx_conf_merge_str_value(conf->trusted_certificate, prev->trusted_certificate, ""); ngx_conf_merge_str_value(conf->crl, prev->crl, ""); + ngx_conf_merge_str_value(conf->alpn, prev->alpn, ""); ngx_conf_merge_str_value(conf->ecdh_curve, prev->ecdh_curve, NGX_DEFAULT_ECDH_CURVE); @@ -720,6 +780,13 @@ ngx_stream_ssl_merge_conf(ngx_conf_t *cf, void *parent, void *child) ngx_stream_ssl_servername); #endif +#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation + if (conf->alpn.len) { + SSL_CTX_set_alpn_select_cb(conf->ssl.ctx, ngx_stream_ssl_alpn_select, + &conf->alpn); + } +#endif + if (ngx_ssl_ciphers(cf, &conf->ssl, &conf->ciphers, conf->prefer_server_ciphers) != NGX_OK) @@ -1057,6 +1124,60 @@ invalid: static char * +ngx_stream_ssl_alpn(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ +#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation + + ngx_stream_ssl_conf_t *scf = conf; + + u_char *p; + size_t len; + ngx_str_t *value; + ngx_uint_t i; + + if (scf->alpn.len) { + return "is duplicate"; + } + + value = cf->args->elts; + + len = 0; + + for (i = 1; i < cf->args->nelts; i++) { + + if (value[i].len > 255) { + return "protocol too long"; + } + + len += value[i].len + 1; + } + + scf->alpn.data = ngx_pnalloc(cf->pool, len); + if (scf->alpn.data == NULL) { + return NGX_CONF_ERROR; + } + + p = scf->alpn.data; + + for (i = 1; i < cf->args->nelts; i++) { + *p++ = value[i].len; + p = ngx_cpymem(p, value[i].data, value[i].len); + } + + scf->alpn.len = len; + + return NGX_CONF_OK; + +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the \"ssl_alpn\" directive requires OpenSSL " + "with ALPN support"); + return NGX_CONF_ERROR; +#endif +} + + +static char * ngx_stream_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data) { #ifndef SSL_CONF_FLAG_FILE |