Mercurial > hg > nginx
view src/http/modules/ngx_http_ssl_module.c @ 5503:d049b0ea00a3
SSL: ssl_session_tickets directive.
This adds support so it's possible to explicitly disable SSL Session
Tickets. In order to have good Forward Secrecy support either the
session ticket key has to be reloaded by using nginx' binary upgrade
process or using an external key file and reloading the configuration.
This directive adds another possibility to have good support by
disabling session tickets altogether.
If session tickets are enabled and the process lives for a long a time,
an attacker can grab the session ticket from the process and use that to
decrypt any traffic that occured during the entire lifetime of the
process.
| author | Dirkjan Bussink <d.bussink@gmail.com> |
|---|---|
| date | Fri, 10 Jan 2014 16:12:40 +0100 |
| parents | a297b7ad6f94 |
| children | 8ed467553f6b |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> typedef ngx_int_t (*ngx_ssl_variable_handler_pt)(ngx_connection_t *c, ngx_pool_t *pool, ngx_str_t *s); #define NGX_DEFAULT_CIPHERS "HIGH:!aNULL:!MD5" #define NGX_DEFAULT_ECDH_CURVE "prime256v1" #ifdef TLSEXT_TYPE_next_proto_neg static int ngx_http_ssl_npn_advertised(ngx_ssl_conn_t *ssl_conn, const unsigned char **out, unsigned int *outlen, void *arg); #endif static ngx_int_t ngx_http_ssl_static_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_ssl_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_ssl_add_variables(ngx_conf_t *cf); static void *ngx_http_ssl_create_srv_conf(ngx_conf_t *cf); static char *ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child); static char *ngx_http_ssl_enable(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_ssl_session_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_int_t ngx_http_ssl_init(ngx_conf_t *cf); static ngx_conf_bitmask_t ngx_http_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_conf_enum_t ngx_http_ssl_verify[] = { { ngx_string("off"), 0 }, { ngx_string("on"), 1 }, { ngx_string("optional"), 2 }, { ngx_string("optional_no_ca"), 3 }, { ngx_null_string, 0 } }; static ngx_command_t ngx_http_ssl_commands[] = { { ngx_string("ssl"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, ngx_http_ssl_enable, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, enable), NULL }, { ngx_string("ssl_certificate"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, certificate), NULL }, { ngx_string("ssl_certificate_key"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, certificate_key), NULL }, { ngx_string("ssl_dhparam"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, dhparam), NULL }, { ngx_string("ssl_ecdh_curve"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, ecdh_curve), NULL }, { ngx_string("ssl_protocols"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE, ngx_conf_set_bitmask_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, protocols), &ngx_http_ssl_protocols }, { ngx_string("ssl_ciphers"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, ciphers), NULL }, { ngx_string("ssl_buffer_size"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, buffer_size), NULL }, { ngx_string("ssl_verify_client"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_enum_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, verify), &ngx_http_ssl_verify }, { ngx_string("ssl_verify_depth"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, verify_depth), NULL }, { ngx_string("ssl_client_certificate"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, client_certificate), NULL }, { ngx_string("ssl_trusted_certificate"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, trusted_certificate), NULL }, { ngx_string("ssl_prefer_server_ciphers"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, prefer_server_ciphers), NULL }, { ngx_string("ssl_session_cache"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE12, ngx_http_ssl_session_cache, NGX_HTTP_SRV_CONF_OFFSET, 0, NULL }, { ngx_string("ssl_session_tickets"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, session_tickets), NULL }, { ngx_string("ssl_session_ticket_key"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_array_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, session_ticket_keys), NULL }, { ngx_string("ssl_session_timeout"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_sec_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, session_timeout), NULL }, { ngx_string("ssl_crl"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, crl), NULL }, { ngx_string("ssl_stapling"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, stapling), NULL }, { ngx_string("ssl_stapling_file"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, stapling_file), NULL }, { ngx_string("ssl_stapling_responder"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, stapling_responder), NULL }, { ngx_string("ssl_stapling_verify"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, stapling_verify), NULL }, ngx_null_command }; static ngx_http_module_t ngx_http_ssl_module_ctx = { ngx_http_ssl_add_variables, /* preconfiguration */ ngx_http_ssl_init, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ ngx_http_ssl_create_srv_conf, /* create server configuration */ ngx_http_ssl_merge_srv_conf, /* merge server configuration */ NULL, /* create location configuration */ NULL /* merge location configuration */ }; ngx_module_t ngx_http_ssl_module = { NGX_MODULE_V1, &ngx_http_ssl_module_ctx, /* module context */ ngx_http_ssl_commands, /* module directives */ NGX_HTTP_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_http_variable_t ngx_http_ssl_vars[] = { { ngx_string("ssl_protocol"), NULL, ngx_http_ssl_static_variable, (uintptr_t) ngx_ssl_get_protocol, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_cipher"), NULL, ngx_http_ssl_static_variable, (uintptr_t) ngx_ssl_get_cipher_name, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_session_id"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_session_id, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_cert"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_certificate, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_raw_cert"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_raw_certificate, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_s_dn"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_subject_dn, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_i_dn"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_issuer_dn, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_serial"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_serial_number, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_verify"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_client_verify, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_null_string, NULL, NULL, 0, 0, 0 } }; static ngx_str_t ngx_http_ssl_sess_id_ctx = ngx_string("HTTP"); #ifdef TLSEXT_TYPE_next_proto_neg #define NGX_HTTP_NPN_ADVERTISE "\x08http/1.1" static int ngx_http_ssl_npn_advertised(ngx_ssl_conn_t *ssl_conn, const unsigned char **out, unsigned int *outlen, void *arg) { #if (NGX_HTTP_SPDY || NGX_DEBUG) ngx_connection_t *c; c = ngx_ssl_get_connection(ssl_conn); ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "SSL NPN advertised"); #endif #if (NGX_HTTP_SPDY) { ngx_http_connection_t *hc; hc = c->data; if (hc->addr_conf->spdy) { *out = (unsigned char *) NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE; *outlen = sizeof(NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE) - 1; return SSL_TLSEXT_ERR_OK; } } #endif *out = (unsigned char *) NGX_HTTP_NPN_ADVERTISE; *outlen = sizeof(NGX_HTTP_NPN_ADVERTISE) - 1; return SSL_TLSEXT_ERR_OK; } #endif static ngx_int_t ngx_http_ssl_static_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { ngx_ssl_variable_handler_pt handler = (ngx_ssl_variable_handler_pt) data; size_t len; ngx_str_t s; if (r->connection->ssl) { (void) handler(r->connection, NULL, &s); v->data = s.data; for (len = 0; v->data[len]; len++) { /* void */ } v->len = len; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; return NGX_OK; } v->not_found = 1; return NGX_OK; } static ngx_int_t ngx_http_ssl_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { ngx_ssl_variable_handler_pt handler = (ngx_ssl_variable_handler_pt) data; ngx_str_t s; if (r->connection->ssl) { if (handler(r->connection, r->pool, &s) != NGX_OK) { return NGX_ERROR; } v->len = s.len; v->data = s.data; if (v->len) { v->valid = 1; v->no_cacheable = 0; v->not_found = 0; return NGX_OK; } } v->not_found = 1; return NGX_OK; } static ngx_int_t ngx_http_ssl_add_variables(ngx_conf_t *cf) { ngx_http_variable_t *var, *v; for (v = ngx_http_ssl_vars; v->name.len; v++) { var = ngx_http_add_variable(cf, &v->name, v->flags); if (var == NULL) { return NGX_ERROR; } var->get_handler = v->get_handler; var->data = v->data; } return NGX_OK; } static void * ngx_http_ssl_create_srv_conf(ngx_conf_t *cf) { ngx_http_ssl_srv_conf_t *sscf; sscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssl_srv_conf_t)); if (sscf == NULL) { return NULL; } /* * set by ngx_pcalloc(): * * sscf->protocols = 0; * sscf->certificate = { 0, NULL }; * sscf->certificate_key = { 0, NULL }; * sscf->dhparam = { 0, NULL }; * sscf->ecdh_curve = { 0, NULL }; * sscf->client_certificate = { 0, NULL }; * sscf->trusted_certificate = { 0, NULL }; * sscf->crl = { 0, NULL }; * sscf->ciphers = { 0, NULL }; * sscf->shm_zone = NULL; * sscf->stapling_file = { 0, NULL }; * sscf->stapling_responder = { 0, NULL }; */ sscf->enable = NGX_CONF_UNSET; sscf->prefer_server_ciphers = NGX_CONF_UNSET; sscf->buffer_size = NGX_CONF_UNSET_SIZE; sscf->verify = NGX_CONF_UNSET_UINT; sscf->verify_depth = NGX_CONF_UNSET_UINT; sscf->builtin_session_cache = NGX_CONF_UNSET; sscf->session_timeout = NGX_CONF_UNSET; sscf->session_tickets = NGX_CONF_UNSET; sscf->session_ticket_keys = NGX_CONF_UNSET_PTR; sscf->stapling = NGX_CONF_UNSET; sscf->stapling_verify = NGX_CONF_UNSET; return sscf; } static char * ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_ssl_srv_conf_t *prev = parent; ngx_http_ssl_srv_conf_t *conf = child; ngx_pool_cleanup_t *cln; if (conf->enable == NGX_CONF_UNSET) { if (prev->enable == NGX_CONF_UNSET) { conf->enable = 0; } else { conf->enable = prev->enable; conf->file = prev->file; conf->line = prev->line; } } 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_SSLv3|NGX_SSL_TLSv1 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, NGX_SSL_BUFSIZE); ngx_conf_merge_uint_value(conf->verify, prev->verify, 0); ngx_conf_merge_uint_value(conf->verify_depth, prev->verify_depth, 1); ngx_conf_merge_str_value(conf->certificate, prev->certificate, ""); ngx_conf_merge_str_value(conf->certificate_key, prev->certificate_key, ""); ngx_conf_merge_str_value(conf->dhparam, prev->dhparam, ""); ngx_conf_merge_str_value(conf->client_certificate, prev->client_certificate, ""); 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->ecdh_curve, prev->ecdh_curve, NGX_DEFAULT_ECDH_CURVE); ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFAULT_CIPHERS); ngx_conf_merge_value(conf->stapling, prev->stapling, 0); ngx_conf_merge_value(conf->stapling_verify, prev->stapling_verify, 0); ngx_conf_merge_str_value(conf->stapling_file, prev->stapling_file, ""); ngx_conf_merge_str_value(conf->stapling_responder, prev->stapling_responder, ""); conf->ssl.log = cf->log; if (conf->enable) { if (conf->certificate.len == 0) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no \"ssl_certificate\" is defined for " "the \"ssl\" directive in %s:%ui", conf->file, conf->line); return NGX_CONF_ERROR; } if (conf->certificate_key.len == 0) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no \"ssl_certificate_key\" is defined for " "the \"ssl\" directive in %s:%ui", conf->file, conf->line); return NGX_CONF_ERROR; } } else { 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, conf) != NGX_OK) { return NGX_CONF_ERROR; } #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME if (SSL_CTX_set_tlsext_servername_callback(conf->ssl.ctx, ngx_http_ssl_servername) == 0) { ngx_log_error(NGX_LOG_WARN, cf->log, 0, "nginx was built with SNI support, however, now it is linked " "dynamically to an OpenSSL library which has no tlsext support, " "therefore SNI is not available"); } #endif #ifdef TLSEXT_TYPE_next_proto_neg SSL_CTX_set_next_protos_advertised_cb(conf->ssl.ctx, ngx_http_ssl_npn_advertised, NULL); #endif 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) != 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; } conf->ssl.buffer_size = conf->buffer_size; if (conf->verify) { if (conf->client_certificate.len == 0 && conf->verify != 3) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no ssl_client_certificate for ssl_client_verify"); return NGX_CONF_ERROR; } if (ngx_ssl_client_certificate(cf, &conf->ssl, &conf->client_certificate, conf->verify_depth) != NGX_OK) { return NGX_CONF_ERROR; } } if (ngx_ssl_trusted_certificate(cf, &conf->ssl, &conf->trusted_certificate, conf->verify_depth) != NGX_OK) { return NGX_CONF_ERROR; } if (ngx_ssl_crl(cf, &conf->ssl, &conf->crl) != NGX_OK) { return NGX_CONF_ERROR; } if (conf->prefer_server_ciphers) { SSL_CTX_set_options(conf->ssl.ctx, SSL_OP_CIPHER_SERVER_PREFERENCE); } /* a temporary 512-bit RSA key is required for export versions of MSIE */ SSL_CTX_set_tmp_rsa_callback(conf->ssl.ctx, ngx_ssl_rsa512_key_callback); 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_http_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; } if (conf->stapling) { if (ngx_ssl_stapling(cf, &conf->ssl, &conf->stapling_file, &conf->stapling_responder, conf->stapling_verify) != NGX_OK) { return NGX_CONF_ERROR; } } return NGX_CONF_OK; } static char * ngx_http_ssl_enable(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_ssl_srv_conf_t *sscf = conf; char *rv; rv = ngx_conf_set_flag_slot(cf, cmd, conf); if (rv != NGX_CONF_OK) { return rv; } sscf->file = cf->conf_file->file.name.data; sscf->line = cf->conf_file->line; return NGX_CONF_OK; } static char * ngx_http_ssl_session_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_ssl_srv_conf_t *sscf = 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) { sscf->builtin_session_cache = NGX_SSL_NO_SCACHE; continue; } if (ngx_strcmp(value[i].data, "none") == 0) { sscf->builtin_session_cache = NGX_SSL_NONE_SCACHE; continue; } if (ngx_strcmp(value[i].data, "builtin") == 0) { sscf->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; } sscf->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; } sscf->shm_zone = ngx_shared_memory_add(cf, &name, n, &ngx_http_ssl_module); if (sscf->shm_zone == NULL) { return NGX_CONF_ERROR; } sscf->shm_zone->init = ngx_ssl_session_cache_init; continue; } goto invalid; } if (sscf->shm_zone && sscf->builtin_session_cache == NGX_CONF_UNSET) { sscf->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; } static ngx_int_t ngx_http_ssl_init(ngx_conf_t *cf) { ngx_uint_t s; ngx_http_ssl_srv_conf_t *sscf; ngx_http_core_loc_conf_t *clcf; ngx_http_core_srv_conf_t **cscfp; ngx_http_core_main_conf_t *cmcf; cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); cscfp = cmcf->servers.elts; for (s = 0; s < cmcf->servers.nelts; s++) { sscf = cscfp[s]->ctx->srv_conf[ngx_http_ssl_module.ctx_index]; if (sscf->ssl.ctx == NULL || !sscf->stapling) { continue; } clcf = cscfp[s]->ctx->loc_conf[ngx_http_core_module.ctx_index]; if (ngx_ssl_stapling_resolver(cf, &sscf->ssl, clcf->resolver, clcf->resolver_timeout) != NGX_OK) { return NGX_ERROR; } } return NGX_OK; }