| |
| /* |
| * Copyright (C) Igor Sysoev |
| * Copyright (C) Nginx, Inc. |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_stream.h> |
| |
| |
| #define NGX_DEFAULT_CIPHERS "HIGH:!aNULL:!MD5" |
| #define NGX_DEFAULT_ECDH_CURVE "prime256v1" |
| |
| |
| static void *ngx_stream_ssl_create_conf(ngx_conf_t *cf); |
| static char *ngx_stream_ssl_merge_conf(ngx_conf_t *cf, void *parent, |
| void *child); |
| |
| 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 ngx_conf_bitmask_t ngx_stream_ssl_protocols[] = { |
| { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, |
| { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, |
| { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, |
| { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, |
| { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, |
| { ngx_null_string, 0 } |
| }; |
| |
| |
| static ngx_command_t ngx_stream_ssl_commands[] = { |
| |
| { ngx_string("ssl_handshake_timeout"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_msec_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, handshake_timeout), |
| NULL }, |
| |
| { ngx_string("ssl_certificate"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, certificate), |
| NULL }, |
| |
| { ngx_string("ssl_certificate_key"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, certificate_key), |
| NULL }, |
| |
| { ngx_string("ssl_password_file"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_stream_ssl_password_file, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| { ngx_string("ssl_dhparam"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, dhparam), |
| NULL }, |
| |
| { ngx_string("ssl_ecdh_curve"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, ecdh_curve), |
| NULL }, |
| |
| { ngx_string("ssl_protocols"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_1MORE, |
| ngx_conf_set_bitmask_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, protocols), |
| &ngx_stream_ssl_protocols }, |
| |
| { ngx_string("ssl_ciphers"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, ciphers), |
| NULL }, |
| |
| { ngx_string("ssl_prefer_server_ciphers"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, prefer_server_ciphers), |
| NULL }, |
| |
| { ngx_string("ssl_session_cache"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE12, |
| ngx_stream_ssl_session_cache, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| 0, |
| NULL }, |
| |
| { ngx_string("ssl_session_tickets"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, |
| ngx_conf_set_flag_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, session_tickets), |
| NULL }, |
| |
| { ngx_string("ssl_session_ticket_key"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_str_array_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, session_ticket_keys), |
| NULL }, |
| |
| { ngx_string("ssl_session_timeout"), |
| NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
| ngx_conf_set_sec_slot, |
| NGX_STREAM_SRV_CONF_OFFSET, |
| offsetof(ngx_stream_ssl_conf_t, session_timeout), |
| NULL }, |
| |
| ngx_null_command |
| }; |
| |
| |
| static ngx_stream_module_t ngx_stream_ssl_module_ctx = { |
| NULL, /* postconfiguration */ |
| |
| NULL, /* create main configuration */ |
| NULL, /* init main configuration */ |
| |
| ngx_stream_ssl_create_conf, /* create server configuration */ |
| ngx_stream_ssl_merge_conf /* merge server configuration */ |
| }; |
| |
| |
| ngx_module_t ngx_stream_ssl_module = { |
| NGX_MODULE_V1, |
| &ngx_stream_ssl_module_ctx, /* module context */ |
| ngx_stream_ssl_commands, /* module directives */ |
| NGX_STREAM_MODULE, /* module type */ |
| NULL, /* init master */ |
| NULL, /* init module */ |
| NULL, /* init process */ |
| NULL, /* init thread */ |
| NULL, /* exit thread */ |
| NULL, /* exit process */ |
| NULL, /* exit master */ |
| NGX_MODULE_V1_PADDING |
| }; |
| |
| |
| static ngx_str_t ngx_stream_ssl_sess_id_ctx = ngx_string("STREAM"); |
| |
| |
| static void * |
| ngx_stream_ssl_create_conf(ngx_conf_t *cf) |
| { |
| ngx_stream_ssl_conf_t *scf; |
| |
| scf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_ssl_conf_t)); |
| if (scf == NULL) { |
| return NULL; |
| } |
| |
| /* |
| * set by ngx_pcalloc(): |
| * |
| * scf->protocols = 0; |
| * scf->certificate = { 0, NULL }; |
| * scf->certificate_key = { 0, NULL }; |
| * scf->dhparam = { 0, NULL }; |
| * scf->ecdh_curve = { 0, NULL }; |
| * scf->ciphers = { 0, NULL }; |
| * scf->shm_zone = NULL; |
| */ |
| |
| scf->handshake_timeout = NGX_CONF_UNSET_MSEC; |
| scf->passwords = NGX_CONF_UNSET_PTR; |
| scf->prefer_server_ciphers = NGX_CONF_UNSET; |
| scf->builtin_session_cache = NGX_CONF_UNSET; |
| scf->session_timeout = NGX_CONF_UNSET; |
| scf->session_tickets = NGX_CONF_UNSET; |
| scf->session_ticket_keys = NGX_CONF_UNSET_PTR; |
| |
| return scf; |
| } |
| |
| |
| static char * |
| ngx_stream_ssl_merge_conf(ngx_conf_t *cf, void *parent, void *child) |
| { |
| ngx_stream_ssl_conf_t *prev = parent; |
| ngx_stream_ssl_conf_t *conf = child; |
| |
| ngx_pool_cleanup_t *cln; |
| |
| ngx_conf_merge_msec_value(conf->handshake_timeout, |
| prev->handshake_timeout, 60000); |
| |
| ngx_conf_merge_value(conf->session_timeout, |
| prev->session_timeout, 300); |
| |
| ngx_conf_merge_value(conf->prefer_server_ciphers, |
| prev->prefer_server_ciphers, 0); |
| |
| ngx_conf_merge_bitmask_value(conf->protocols, prev->protocols, |
| (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 |
| |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); |
| |
| ngx_conf_merge_str_value(conf->certificate, prev->certificate, ""); |
| ngx_conf_merge_str_value(conf->certificate_key, prev->certificate_key, ""); |
| |
| ngx_conf_merge_ptr_value(conf->passwords, prev->passwords, NULL); |
| |
| ngx_conf_merge_str_value(conf->dhparam, prev->dhparam, ""); |
| |
| ngx_conf_merge_str_value(conf->ecdh_curve, prev->ecdh_curve, |
| NGX_DEFAULT_ECDH_CURVE); |
| |
| ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFAULT_CIPHERS); |
| |
| |
| conf->ssl.log = cf->log; |
| |
| if (conf->certificate.len == 0) { |
| return NGX_CONF_OK; |
| } |
| |
| if (conf->certificate_key.len == 0) { |
| ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
| "no \"ssl_certificate_key\" is defined " |
| "for certificate \"%V\"", |
| &conf->certificate); |
| return NGX_CONF_ERROR; |
| } |
| |
| if (ngx_ssl_create(&conf->ssl, conf->protocols, NULL) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| cln = ngx_pool_cleanup_add(cf->pool, 0); |
| if (cln == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| cln->handler = ngx_ssl_cleanup_ctx; |
| cln->data = &conf->ssl; |
| |
| if (ngx_ssl_certificate(cf, &conf->ssl, &conf->certificate, |
| &conf->certificate_key, conf->passwords) |
| != NGX_OK) |
| { |
| return NGX_CONF_ERROR; |
| } |
| |
| if (SSL_CTX_set_cipher_list(conf->ssl.ctx, |
| (const char *) conf->ciphers.data) |
| == 0) |
| { |
| ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, |
| "SSL_CTX_set_cipher_list(\"%V\") failed", |
| &conf->ciphers); |
| return NGX_CONF_ERROR; |
| } |
| |
| if (conf->prefer_server_ciphers) { |
| SSL_CTX_set_options(conf->ssl.ctx, SSL_OP_CIPHER_SERVER_PREFERENCE); |
| } |
| |
| #if (OPENSSL_VERSION_NUMBER < 0x10100001L && !defined LIBRESSL_VERSION_NUMBER) |
| SSL_CTX_set_tmp_rsa_callback(conf->ssl.ctx, ngx_ssl_rsa512_key_callback); |
| #endif |
| |
| if (ngx_ssl_dhparam(cf, &conf->ssl, &conf->dhparam) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| if (ngx_ssl_ecdh_curve(cf, &conf->ssl, &conf->ecdh_curve) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| ngx_conf_merge_value(conf->builtin_session_cache, |
| prev->builtin_session_cache, NGX_SSL_NONE_SCACHE); |
| |
| if (conf->shm_zone == NULL) { |
| conf->shm_zone = prev->shm_zone; |
| } |
| |
| if (ngx_ssl_session_cache(&conf->ssl, &ngx_stream_ssl_sess_id_ctx, |
| conf->builtin_session_cache, |
| conf->shm_zone, conf->session_timeout) |
| != NGX_OK) |
| { |
| return NGX_CONF_ERROR; |
| } |
| |
| ngx_conf_merge_value(conf->session_tickets, |
| prev->session_tickets, 1); |
| |
| #ifdef SSL_OP_NO_TICKET |
| if (!conf->session_tickets) { |
| SSL_CTX_set_options(conf->ssl.ctx, SSL_OP_NO_TICKET); |
| } |
| #endif |
| |
| ngx_conf_merge_ptr_value(conf->session_ticket_keys, |
| prev->session_ticket_keys, NULL); |
| |
| if (ngx_ssl_session_ticket_keys(cf, &conf->ssl, conf->session_ticket_keys) |
| != NGX_OK) |
| { |
| return NGX_CONF_ERROR; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char * |
| ngx_stream_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| ngx_stream_ssl_conf_t *scf = conf; |
| |
| ngx_str_t *value; |
| |
| if (scf->passwords != NGX_CONF_UNSET_PTR) { |
| return "is duplicate"; |
| } |
| |
| value = cf->args->elts; |
| |
| scf->passwords = ngx_ssl_read_password_file(cf, &value[1]); |
| |
| if (scf->passwords == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| static char * |
| ngx_stream_ssl_session_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| ngx_stream_ssl_conf_t *scf = conf; |
| |
| size_t len; |
| ngx_str_t *value, name, size; |
| ngx_int_t n; |
| ngx_uint_t i, j; |
| |
| value = cf->args->elts; |
| |
| for (i = 1; i < cf->args->nelts; i++) { |
| |
| if (ngx_strcmp(value[i].data, "off") == 0) { |
| scf->builtin_session_cache = NGX_SSL_NO_SCACHE; |
| continue; |
| } |
| |
| if (ngx_strcmp(value[i].data, "none") == 0) { |
| scf->builtin_session_cache = NGX_SSL_NONE_SCACHE; |
| continue; |
| } |
| |
| if (ngx_strcmp(value[i].data, "builtin") == 0) { |
| scf->builtin_session_cache = NGX_SSL_DFLT_BUILTIN_SCACHE; |
| continue; |
| } |
| |
| if (value[i].len > sizeof("builtin:") - 1 |
| && ngx_strncmp(value[i].data, "builtin:", sizeof("builtin:") - 1) |
| == 0) |
| { |
| n = ngx_atoi(value[i].data + sizeof("builtin:") - 1, |
| value[i].len - (sizeof("builtin:") - 1)); |
| |
| if (n == NGX_ERROR) { |
| goto invalid; |
| } |
| |
| scf->builtin_session_cache = n; |
| |
| continue; |
| } |
| |
| if (value[i].len > sizeof("shared:") - 1 |
| && ngx_strncmp(value[i].data, "shared:", sizeof("shared:") - 1) |
| == 0) |
| { |
| len = 0; |
| |
| for (j = sizeof("shared:") - 1; j < value[i].len; j++) { |
| if (value[i].data[j] == ':') { |
| break; |
| } |
| |
| len++; |
| } |
| |
| if (len == 0) { |
| goto invalid; |
| } |
| |
| name.len = len; |
| name.data = value[i].data + sizeof("shared:") - 1; |
| |
| size.len = value[i].len - j - 1; |
| size.data = name.data + len + 1; |
| |
| n = ngx_parse_size(&size); |
| |
| if (n == NGX_ERROR) { |
| goto invalid; |
| } |
| |
| if (n < (ngx_int_t) (8 * ngx_pagesize)) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "session cache \"%V\" is too small", |
| &value[i]); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| scf->shm_zone = ngx_shared_memory_add(cf, &name, n, |
| &ngx_stream_ssl_module); |
| if (scf->shm_zone == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| scf->shm_zone->init = ngx_ssl_session_cache_init; |
| |
| continue; |
| } |
| |
| goto invalid; |
| } |
| |
| if (scf->shm_zone && scf->builtin_session_cache == NGX_CONF_UNSET) { |
| scf->builtin_session_cache = NGX_SSL_NO_BUILTIN_SCACHE; |
| } |
| |
| return NGX_CONF_OK; |
| |
| invalid: |
| |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "invalid session cache \"%V\"", &value[i]); |
| |
| return NGX_CONF_ERROR; |
| } |
