Mercurial > hg > nginx-quic
view src/stream/ngx_stream_ssl_module.c @ 8700:b09f055daa4e quic
QUIC: fixed handling of RETIRE_CONNECTION_ID frame.
Previously, the retired socket was not closed if it didn't match
active or backup.
New sockets could not be created (due to count limit), since retired socket
was not closed before calling ngx_quic_create_sockets().
When replacing retired socket, new socket is only requested after closing
old one, to avoid hitting the limit on the number of active connection ids.
Together with added restrictions, this fixes an issue when a current socket
could be closed during migration, recreated and erroneously reused leading
to null pointer dereference.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Thu, 18 Nov 2021 14:19:36 +0300 |
parents | 61d0fa67b55e |
children | 5c86189a1c1b |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_stream.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" static ngx_int_t ngx_stream_ssl_handler(ngx_stream_session_t *s); 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 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); #endif static ngx_int_t ngx_stream_ssl_static_variable(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_stream_ssl_variable(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_stream_ssl_add_variables(ngx_conf_t *cf); 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 ngx_int_t ngx_stream_ssl_compile_certificates(ngx_conf_t *cf, ngx_stream_ssl_conf_t *conf); 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); static ngx_int_t ngx_stream_ssl_init(ngx_conf_t *cf); 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_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, { ngx_null_string, 0 } }; static ngx_conf_enum_t ngx_stream_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_post_t ngx_stream_ssl_conf_command_post = { ngx_stream_ssl_conf_command_check }; 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_array_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_ssl_conf_t, certificates), NULL }, { ngx_string("ssl_certificate_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, certificate_keys), 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_verify_client"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_enum_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_ssl_conf_t, verify), &ngx_stream_ssl_verify }, { ngx_string("ssl_verify_depth"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_ssl_conf_t, verify_depth), NULL }, { ngx_string("ssl_client_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, client_certificate), NULL }, { ngx_string("ssl_trusted_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, trusted_certificate), 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_string("ssl_crl"), 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, crl), NULL }, { ngx_string("ssl_conf_command"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE2, ngx_conf_set_keyval_slot, NGX_STREAM_SRV_CONF_OFFSET, 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 }; static ngx_stream_module_t ngx_stream_ssl_module_ctx = { ngx_stream_ssl_add_variables, /* preconfiguration */ ngx_stream_ssl_init, /* 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_stream_variable_t ngx_stream_ssl_vars[] = { { ngx_string("ssl_protocol"), NULL, ngx_stream_ssl_static_variable, (uintptr_t) ngx_ssl_get_protocol, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_cipher"), NULL, ngx_stream_ssl_static_variable, (uintptr_t) ngx_ssl_get_cipher_name, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_ciphers"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_ciphers, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_curves"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_curves, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_session_id"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_session_id, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_session_reused"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_session_reused, NGX_STREAM_VAR_CHANGEABLE, 0 }, { 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 }, { ngx_string("ssl_client_raw_cert"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_raw_certificate, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_escaped_cert"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_escaped_certificate, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_s_dn"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_subject_dn, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_i_dn"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_issuer_dn, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_serial"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_serial_number, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_fingerprint"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_fingerprint, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_verify"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_client_verify, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_v_start"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_client_v_start, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_v_end"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_client_v_end, NGX_STREAM_VAR_CHANGEABLE, 0 }, { ngx_string("ssl_client_v_remain"), NULL, ngx_stream_ssl_variable, (uintptr_t) ngx_ssl_get_client_v_remain, NGX_STREAM_VAR_CHANGEABLE, 0 }, ngx_stream_null_variable }; static ngx_str_t ngx_stream_ssl_sess_id_ctx = ngx_string("STREAM"); static ngx_int_t ngx_stream_ssl_handler(ngx_stream_session_t *s) { long rc; X509 *cert; ngx_int_t rv; ngx_connection_t *c; ngx_stream_ssl_conf_t *sslcf; if (!s->ssl) { return NGX_OK; } c = s->connection; sslcf = ngx_stream_get_module_srv_conf(s, ngx_stream_ssl_module); if (c->ssl == NULL) { c->log->action = "SSL handshaking"; rv = ngx_stream_ssl_init_connection(&sslcf->ssl, c); if (rv != NGX_OK) { return rv; } } if (sslcf->verify) { rc = SSL_get_verify_result(c->ssl->connection); if (rc != X509_V_OK && (sslcf->verify != 3 || !ngx_ssl_verify_error_optional(rc))) { ngx_log_error(NGX_LOG_INFO, c->log, 0, "client SSL certificate verify error: (%l:%s)", rc, X509_verify_cert_error_string(rc)); ngx_ssl_remove_cached_session(c->ssl->session_ctx, (SSL_get0_session(c->ssl->connection))); return NGX_ERROR; } if (sslcf->verify == 1) { cert = SSL_get_peer_certificate(c->ssl->connection); if (cert == NULL) { ngx_log_error(NGX_LOG_INFO, c->log, 0, "client sent no required SSL certificate"); ngx_ssl_remove_cached_session(c->ssl->session_ctx, (SSL_get0_session(c->ssl->connection))); return NGX_ERROR; } X509_free(cert); } } return NGX_OK; } static ngx_int_t ngx_stream_ssl_init_connection(ngx_ssl_t *ssl, ngx_connection_t *c) { ngx_int_t rc; ngx_stream_session_t *s; ngx_stream_ssl_conf_t *sslcf; ngx_stream_core_srv_conf_t *cscf; s = c->data; cscf = ngx_stream_get_module_srv_conf(s, ngx_stream_core_module); if (cscf->tcp_nodelay && ngx_tcp_nodelay(c) != NGX_OK) { return NGX_ERROR; } if (ngx_ssl_create_connection(ssl, c, 0) != NGX_OK) { return NGX_ERROR; } rc = ngx_ssl_handshake(c); if (rc == NGX_ERROR) { return NGX_ERROR; } if (rc == NGX_AGAIN) { sslcf = ngx_stream_get_module_srv_conf(s, ngx_stream_ssl_module); ngx_add_timer(c->read, sslcf->handshake_timeout); c->ssl->handler = ngx_stream_ssl_handshake_handler; return NGX_AGAIN; } /* rc == NGX_OK */ return NGX_OK; } static void ngx_stream_ssl_handshake_handler(ngx_connection_t *c) { ngx_stream_session_t *s; s = c->data; if (!c->ssl->handshaked) { ngx_stream_finalize_session(s, NGX_STREAM_INTERNAL_SERVER_ERROR); return; } if (c->read->timer_set) { ngx_del_timer(c->read); } ngx_stream_core_run_phases(s); } #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME static int ngx_stream_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg) { return SSL_TLSEXT_ERR_OK; } #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 static int ngx_stream_ssl_certificate(ngx_ssl_conn_t *ssl_conn, void *arg) { ngx_str_t cert, key; ngx_uint_t i, nelts; ngx_connection_t *c; ngx_stream_session_t *s; ngx_stream_ssl_conf_t *sslcf; ngx_stream_complex_value_t *certs, *keys; c = ngx_ssl_get_connection(ssl_conn); if (c->ssl->handshaked) { return 0; } s = c->data; sslcf = arg; nelts = sslcf->certificate_values->nelts; certs = sslcf->certificate_values->elts; keys = sslcf->certificate_key_values->elts; for (i = 0; i < nelts; i++) { if (ngx_stream_complex_value(s, &certs[i], &cert) != NGX_OK) { return 0; } ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0, "ssl cert: \"%s\"", cert.data); if (ngx_stream_complex_value(s, &keys[i], &key) != NGX_OK) { return 0; } ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0, "ssl key: \"%s\"", key.data); if (ngx_ssl_connection_certificate(c, c->pool, &cert, &key, sslcf->passwords) != NGX_OK) { return 0; } } return 1; } #endif static ngx_int_t ngx_stream_ssl_static_variable(ngx_stream_session_t *s, ngx_stream_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 str; if (s->connection->ssl) { (void) handler(s->connection, NULL, &str); v->data = str.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_stream_ssl_variable(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data) { ngx_ssl_variable_handler_pt handler = (ngx_ssl_variable_handler_pt) data; ngx_str_t str; if (s->connection->ssl) { if (handler(s->connection, s->connection->pool, &str) != NGX_OK) { return NGX_ERROR; } v->len = str.len; v->data = str.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_stream_ssl_add_variables(ngx_conf_t *cf) { ngx_stream_variable_t *var, *v; for (v = ngx_stream_ssl_vars; v->name.len; v++) { var = ngx_stream_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_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->listen = 0; * scf->protocols = 0; * scf->certificate_values = NULL; * scf->dhparam = { 0, NULL }; * scf->ecdh_curve = { 0, NULL }; * 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; */ scf->handshake_timeout = NGX_CONF_UNSET_MSEC; scf->certificates = NGX_CONF_UNSET_PTR; scf->certificate_keys = NGX_CONF_UNSET_PTR; scf->passwords = NGX_CONF_UNSET_PTR; scf->conf_commands = NGX_CONF_UNSET_PTR; scf->prefer_server_ciphers = NGX_CONF_UNSET; scf->verify = NGX_CONF_UNSET_UINT; scf->verify_depth = NGX_CONF_UNSET_UINT; 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_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->alpn, prev->alpn, ""); 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); conf->ssl.log = cf->log; if (!conf->listen) { return NGX_CONF_OK; } if (conf->certificates == NULL) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no \"ssl_certificate\" is defined for " "the \"listen ... ssl\" directive in %s:%ui", conf->file, conf->line); return NGX_CONF_ERROR; } if (conf->certificate_keys == NULL) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "no \"ssl_certificate_key\" is defined for " "the \"listen ... 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 \"listen ... ssl\" directive in %s:%ui", ((ngx_str_t *) conf->certificates->elts) + conf->certificates->nelts - 1, conf->file, conf->line); 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) { 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 SSL_CTX_set_tlsext_servername_callback(conf->ssl.ctx, 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) { return NGX_CONF_ERROR; } if (ngx_stream_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_stream_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 { /* configure certificates */ if (ngx_ssl_certificates(cf, &conf->ssl, conf->certificates, conf->certificate_keys, conf->passwords) != NGX_OK) { return NGX_CONF_ERROR; } } 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 (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->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 (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_stream_ssl_compile_certificates(ngx_conf_t *cf, ngx_stream_ssl_conf_t *conf) { ngx_str_t *cert, *key; ngx_uint_t i, nelts; ngx_stream_complex_value_t *cv; ngx_stream_compile_complex_value_t ccv; cert = conf->certificates->elts; key = conf->certificate_keys->elts; nelts = conf->certificates->nelts; for (i = 0; i < nelts; i++) { if (ngx_stream_script_variables_count(&cert[i])) { goto found; } if (ngx_stream_script_variables_count(&key[i])) { goto found; } } return NGX_OK; found: conf->certificate_values = ngx_array_create(cf->pool, nelts, sizeof(ngx_stream_complex_value_t)); if (conf->certificate_values == NULL) { return NGX_ERROR; } conf->certificate_key_values = ngx_array_create(cf->pool, nelts, sizeof(ngx_stream_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_stream_compile_complex_value_t)); ccv.cf = cf; ccv.value = &cert[i]; ccv.complex_value = cv; ccv.zero = 1; if (ngx_stream_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_stream_compile_complex_value_t)); ccv.cf = cf; ccv.value = &key[i]; ccv.complex_value = cv; ccv.zero = 1; if (ngx_stream_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_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; } 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 return "is not supported on this platform"; #else return NGX_CONF_OK; #endif } static ngx_int_t ngx_stream_ssl_init(ngx_conf_t *cf) { ngx_uint_t i; ngx_stream_listen_t *listen; ngx_stream_handler_pt *h; ngx_stream_ssl_conf_t *scf; ngx_stream_core_main_conf_t *cmcf; cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module); h = ngx_array_push(&cmcf->phases[NGX_STREAM_SSL_PHASE].handlers); if (h == NULL) { return NGX_ERROR; } *h = ngx_stream_ssl_handler; listen = cmcf->listen.elts; for (i = 0; i < cmcf->listen.nelts; i++) { if (!listen[i].quic) { continue; } scf = listen[i].ctx->srv_conf[ngx_stream_ssl_module.ctx_index]; if (scf->certificates && !(scf->protocols & NGX_SSL_TLSv1_3)) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "\"ssl_protocols\" must enable TLSv1.3 for " "the \"listen ... quic\" directive in %s:%ui", scf->file, scf->line); return NGX_ERROR; } } return NGX_OK; }