Mercurial > hg > nginx-quic
view src/http/modules/ngx_http_ssl_module.c @ 8733:ae70fcb8ac93 stable-1.20
Fixed SSL logging with lingering close.
Recent fixes to SSL shutdown with lingering close (554c6ae25ffc, 1.19.5)
broke logging of SSL variables. To make sure logging of SSL variables
works properly, avoid freeing c->ssl when doing an SSL shutdown before
lingering close.
Reported by Reinis Rozitis
(http://mailman.nginx.org/pipermail/nginx/2021-May/060670.html).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 01 Jun 2021 17:37:51 +0300 |
parents | 7ce28b4cc57e |
children | 05e0988a6898 419c066cb710 |
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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 "auto" #define NGX_HTTP_NPN_ADVERTISE "\x08http/1.1" #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation static int ngx_http_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 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 ngx_int_t ngx_http_ssl_compile_certificates(ngx_conf_t *cf, ngx_http_ssl_srv_conf_t *conf); static char *ngx_http_ssl_enable(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_ssl_password_file(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 char *ngx_http_ssl_ocsp_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data); 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_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, { 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_conf_enum_t ngx_http_ssl_ocsp[] = { { ngx_string("off"), 0 }, { ngx_string("on"), 1 }, { ngx_string("leaf"), 2 }, { ngx_null_string, 0 } }; static ngx_conf_deprecated_t ngx_http_ssl_deprecated = { ngx_conf_deprecated, "ssl", "listen ... ssl" }; static ngx_conf_post_t ngx_http_ssl_conf_command_post = { ngx_http_ssl_conf_command_check }; 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), &ngx_http_ssl_deprecated }, { ngx_string("ssl_certificate"), 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, certificates), NULL }, { ngx_string("ssl_certificate_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, certificate_keys), NULL }, { ngx_string("ssl_password_file"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_http_ssl_password_file, NGX_HTTP_SRV_CONF_OFFSET, 0, 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_TAKE1, 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_ocsp"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_enum_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, ocsp), &ngx_http_ssl_ocsp }, { ngx_string("ssl_ocsp_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, ocsp_responder), NULL }, { ngx_string("ssl_ocsp_cache"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_http_ssl_ocsp_cache, NGX_HTTP_SRV_CONF_OFFSET, 0, 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_string("ssl_early_data"), 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, early_data), NULL }, { ngx_string("ssl_conf_command"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE2, ngx_conf_set_keyval_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_ssl_srv_conf_t, conf_commands), &ngx_http_ssl_conf_command_post }, { ngx_string("ssl_reject_handshake"), 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, reject_handshake), 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_ciphers"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_ciphers, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_curves"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_curves, 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_session_reused"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_session_reused, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_early_data"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_early_data, NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE, 0 }, { ngx_string("ssl_server_name"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_server_name, 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_escaped_cert"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_escaped_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_s_dn_legacy"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_subject_dn_legacy, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_i_dn_legacy"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_issuer_dn_legacy, 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_fingerprint"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_fingerprint, 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_string("ssl_client_v_start"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_client_v_start, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_v_end"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_client_v_end, NGX_HTTP_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_v_remain"), NULL, ngx_http_ssl_variable, (uintptr_t) ngx_ssl_get_client_v_remain, NGX_HTTP_VAR_CHANGEABLE, 0 }, ngx_http_null_variable }; static ngx_str_t ngx_http_ssl_sess_id_ctx = ngx_string("HTTP"); #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation static int ngx_http_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) { unsigned int srvlen; unsigned char *srv; #if (NGX_DEBUG) unsigned int i; #endif #if (NGX_HTTP_V2) ngx_http_connection_t *hc; #endif #if (NGX_HTTP_V2 || NGX_DEBUG) ngx_connection_t *c; c = ngx_ssl_get_connection(ssl_conn); #endif #if (NGX_DEBUG) for (i = 0; i < inlen; i += in[i] + 1) { ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "SSL ALPN supported by client: %*s", (size_t) in[i], &in[i + 1]); } #endif #if (NGX_HTTP_V2) hc = c->data; if (hc->addr_conf->http2) { srv = (unsigned char *) NGX_HTTP_V2_ALPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE; srvlen = sizeof(NGX_HTTP_V2_ALPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE) - 1; } else #endif { srv = (unsigned char *) NGX_HTTP_NPN_ADVERTISE; srvlen = sizeof(NGX_HTTP_NPN_ADVERTISE) - 1; } if (SSL_select_next_proto((unsigned char **) out, outlen, srv, srvlen, in, inlen) != OPENSSL_NPN_NEGOTIATED) { return SSL_TLSEXT_ERR_NOACK; } ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "SSL ALPN selected: %*s", (size_t) *outlen, *out); return SSL_TLSEXT_ERR_OK; } #endif #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) { #if (NGX_HTTP_V2 || 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_V2) { ngx_http_connection_t *hc; hc = c->data; if (hc->addr_conf->http2) { *out = (unsigned char *) NGX_HTTP_V2_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE; *outlen = sizeof(NGX_HTTP_V2_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_values = 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->ocsp_responder = { 0, NULL }; * sscf->stapling_file = { 0, NULL }; * sscf->stapling_responder = { 0, NULL }; */ sscf->enable = NGX_CONF_UNSET; sscf->prefer_server_ciphers = NGX_CONF_UNSET; sscf->early_data = NGX_CONF_UNSET; sscf->reject_handshake = NGX_CONF_UNSET; sscf->buffer_size = NGX_CONF_UNSET_SIZE; sscf->verify = NGX_CONF_UNSET_UINT; sscf->verify_depth = NGX_CONF_UNSET_UINT; sscf->certificates = NGX_CONF_UNSET_PTR; sscf->certificate_keys = NGX_CONF_UNSET_PTR; sscf->passwords = NGX_CONF_UNSET_PTR; sscf->conf_commands = NGX_CONF_UNSET_PTR; 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->ocsp = NGX_CONF_UNSET_UINT; sscf->ocsp_cache_zone = 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_value(conf->early_data, prev->early_data, 0); ngx_conf_merge_value(conf->reject_handshake, prev->reject_handshake, 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_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_ptr_value(conf->certificates, prev->certificates, NULL); ngx_conf_merge_ptr_value(conf->certificate_keys, prev->certificate_keys, NULL); 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->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_ptr_value(conf->conf_commands, prev->conf_commands, NULL); ngx_conf_merge_uint_value(conf->ocsp, prev->ocsp, 0); ngx_conf_merge_str_value(conf->ocsp_responder, prev->ocsp_responder, ""); ngx_conf_merge_ptr_value(conf->ocsp_cache_zone, prev->ocsp_cache_zone, NULL); 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->certificates) { if (conf->certificate_keys == NULL) { 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; } if (conf->certificate_keys->nelts < conf->certificates->nelts) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no \"ssl_certificate_key\" is defined " "for certificate \"%V\" and " "the \"ssl\" directive in %s:%ui", ((ngx_str_t *) conf->certificates->elts) + conf->certificates->nelts - 1, conf->file, conf->line); return NGX_CONF_ERROR; } } else if (!conf->reject_handshake) { 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; } } else if (conf->certificates) { if (conf->certificate_keys == NULL || conf->certificate_keys->nelts < conf->certificates->nelts) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no \"ssl_certificate_key\" is defined " "for certificate \"%V\"", ((ngx_str_t *) conf->certificates->elts) + conf->certificates->nelts - 1); return NGX_CONF_ERROR; } } else if (!conf->reject_handshake) { return NGX_CONF_OK; } if (ngx_ssl_create(&conf->ssl, conf->protocols, conf) != NGX_OK) { return NGX_CONF_ERROR; } cln = ngx_pool_cleanup_add(cf->pool, 0); if (cln == NULL) { ngx_ssl_cleanup_ctx(&conf->ssl); return NGX_CONF_ERROR; } cln->handler = ngx_ssl_cleanup_ctx; cln->data = &conf->ssl; #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_application_layer_protocol_negotiation SSL_CTX_set_alpn_select_cb(conf->ssl.ctx, ngx_http_ssl_alpn_select, NULL); #endif #ifdef TLSEXT_TYPE_next_proto_neg SSL_CTX_set_next_protos_advertised_cb(conf->ssl.ctx, ngx_http_ssl_npn_advertised, NULL); #endif if (ngx_http_ssl_compile_certificates(cf, conf) != NGX_OK) { return NGX_CONF_ERROR; } if (conf->certificate_values) { #ifdef SSL_R_CERT_CB_ERROR /* install callback to lookup certificates */ SSL_CTX_set_cert_cb(conf->ssl.ctx, ngx_http_ssl_certificate, conf); #else ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "variables in " "\"ssl_certificate\" and \"ssl_certificate_key\" " "directives are not supported on this platform"); return NGX_CONF_ERROR; #endif } else if (conf->certificates) { /* configure certificates */ if (ngx_ssl_certificates(cf, &conf->ssl, conf->certificates, conf->certificate_keys, conf->passwords) != NGX_OK) { return NGX_CONF_ERROR; } } if (ngx_ssl_ciphers(cf, &conf->ssl, &conf->ciphers, conf->prefer_server_ciphers) != NGX_OK) { 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_verify_client"); 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->ocsp) { if (conf->verify == 3) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "\"ssl_ocsp\" is incompatible with " "\"ssl_verify_client optional_no_ca\""); return NGX_CONF_ERROR; } if (ngx_ssl_ocsp(cf, &conf->ssl, &conf->ocsp_responder, conf->ocsp, conf->ocsp_cache_zone) != NGX_OK) { return NGX_CONF_ERROR; } } 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->certificates, 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; } } if (ngx_ssl_early_data(cf, &conf->ssl, conf->early_data) != NGX_OK) { return NGX_CONF_ERROR; } if (ngx_ssl_conf_commands(cf, &conf->ssl, conf->conf_commands) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } static ngx_int_t ngx_http_ssl_compile_certificates(ngx_conf_t *cf, ngx_http_ssl_srv_conf_t *conf) { ngx_str_t *cert, *key; ngx_uint_t i, nelts; ngx_http_complex_value_t *cv; ngx_http_compile_complex_value_t ccv; if (conf->certificates == NULL) { return NGX_OK; } cert = conf->certificates->elts; key = conf->certificate_keys->elts; nelts = conf->certificates->nelts; for (i = 0; i < nelts; i++) { if (ngx_http_script_variables_count(&cert[i])) { goto found; } if (ngx_http_script_variables_count(&key[i])) { goto found; } } return NGX_OK; found: conf->certificate_values = ngx_array_create(cf->pool, nelts, sizeof(ngx_http_complex_value_t)); if (conf->certificate_values == NULL) { return NGX_ERROR; } conf->certificate_key_values = ngx_array_create(cf->pool, nelts, sizeof(ngx_http_complex_value_t)); if (conf->certificate_key_values == NULL) { return NGX_ERROR; } for (i = 0; i < nelts; i++) { cv = ngx_array_push(conf->certificate_values); if (cv == NULL) { return NGX_ERROR; } ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &cert[i]; ccv.complex_value = cv; ccv.zero = 1; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_ERROR; } cv = ngx_array_push(conf->certificate_key_values); if (cv == NULL) { return NGX_ERROR; } ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &key[i]; ccv.complex_value = cv; ccv.zero = 1; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_ERROR; } } conf->passwords = ngx_ssl_preserve_passwords(cf, conf->passwords); if (conf->passwords == NULL) { return NGX_ERROR; } return NGX_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_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_ssl_srv_conf_t *sscf = conf; ngx_str_t *value; if (sscf->passwords != NGX_CONF_UNSET_PTR) { return "is duplicate"; } value = cf->args->elts; sscf->passwords = ngx_ssl_read_password_file(cf, &value[1]); if (sscf->passwords == NULL) { return NGX_CONF_ERROR; } 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 char * ngx_http_ssl_ocsp_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_ssl_srv_conf_t *sscf = conf; size_t len; ngx_int_t n; ngx_str_t *value, name, size; ngx_uint_t j; if (sscf->ocsp_cache_zone != NGX_CONF_UNSET_PTR) { return "is duplicate"; } value = cf->args->elts; if (ngx_strcmp(value[1].data, "off") == 0) { sscf->ocsp_cache_zone = NULL; return NGX_CONF_OK; } if (value[1].len <= sizeof("shared:") - 1 || ngx_strncmp(value[1].data, "shared:", sizeof("shared:") - 1) != 0) { goto invalid; } len = 0; for (j = sizeof("shared:") - 1; j < value[1].len; j++) { if (value[1].data[j] == ':') { break; } len++; } if (len == 0) { goto invalid; } name.len = len; name.data = value[1].data + sizeof("shared:") - 1; size.len = value[1].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, "OCSP cache \"%V\" is too small", &value[1]); return NGX_CONF_ERROR; } sscf->ocsp_cache_zone = ngx_shared_memory_add(cf, &name, n, &ngx_http_ssl_module_ctx); if (sscf->ocsp_cache_zone == NULL) { return NGX_CONF_ERROR; } sscf->ocsp_cache_zone->init = ngx_ssl_ocsp_cache_init; return NGX_CONF_OK; invalid: ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid OCSP cache \"%V\"", &value[1]); return NGX_CONF_ERROR; } static char * ngx_http_ssl_conf_command_check(ngx_conf_t *cf, void *post, void *data) { #ifndef SSL_CONF_FLAG_FILE return "is not supported on this platform"; #else return NGX_CONF_OK; #endif } static ngx_int_t ngx_http_ssl_init(ngx_conf_t *cf) { ngx_uint_t a, p, s; ngx_http_conf_addr_t *addr; ngx_http_conf_port_t *port; ngx_http_ssl_srv_conf_t *sscf; ngx_http_core_loc_conf_t *clcf; ngx_http_core_srv_conf_t **cscfp, *cscf; 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) { continue; } clcf = cscfp[s]->ctx->loc_conf[ngx_http_core_module.ctx_index]; if (sscf->stapling) { if (ngx_ssl_stapling_resolver(cf, &sscf->ssl, clcf->resolver, clcf->resolver_timeout) != NGX_OK) { return NGX_ERROR; } } if (sscf->ocsp) { if (ngx_ssl_ocsp_resolver(cf, &sscf->ssl, clcf->resolver, clcf->resolver_timeout) != NGX_OK) { return NGX_ERROR; } } } if (cmcf->ports == NULL) { return NGX_OK; } port = cmcf->ports->elts; for (p = 0; p < cmcf->ports->nelts; p++) { addr = port[p].addrs.elts; for (a = 0; a < port[p].addrs.nelts; a++) { if (!addr[a].opt.ssl) { continue; } cscf = addr[a].default_server; sscf = cscf->ctx->srv_conf[ngx_http_ssl_module.ctx_index]; if (sscf->certificates) { continue; } if (!sscf->reject_handshake) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no \"ssl_certificate\" is defined for " "the \"listen ... ssl\" directive in %s:%ui", cscf->file_name, cscf->line); return NGX_ERROR; } /* * if no certificates are defined in the default server, * check all non-default server blocks */ cscfp = addr[a].servers.elts; for (s = 0; s < addr[a].servers.nelts; s++) { cscf = cscfp[s]; sscf = cscf->ctx->srv_conf[ngx_http_ssl_module.ctx_index]; if (sscf->certificates || sscf->reject_handshake) { continue; } ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no \"ssl_certificate\" is defined for " "the \"listen ... ssl\" directive in %s:%ui", cscf->file_name, cscf->line); return NGX_ERROR; } } } return NGX_OK; }