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Diffstat (limited to 'modules/tls/tls_conf.h')
| -rw-r--r-- | modules/tls/tls_conf.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/modules/tls/tls_conf.h b/modules/tls/tls_conf.h new file mode 100644 index 0000000..e924412 --- /dev/null +++ b/modules/tls/tls_conf.h @@ -0,0 +1,185 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef tls_conf_h +#define tls_conf_h + +/* Configuration flags */ +#define TLS_FLAG_UNSET (-1) +#define TLS_FLAG_FALSE (0) +#define TLS_FLAG_TRUE (1) + +struct tls_proto_conf_t; +struct tls_cert_reg_t; +struct tls_cert_root_stores_t; +struct tls_cert_verifiers_t; +struct ap_socache_instance_t; +struct ap_socache_provider_t; +struct apr_global_mutex_t; + + +/* disabled, since rustls support is lacking + * - x.509 retrieval of certificate fields and extensions + * - certificate revocation lists (CRL) + * - x.509 access to issuer of trust chain in x.509 CA store: + * server CA has ca1, ca2, ca3 + * client present certA + * rustls verifies that it is signed by *one of* ca* certs + * OCSP check needs (certA, issuing cert) for query + */ +#define TLS_CLIENT_CERTS 0 + +/* support for this exists as PR <https://github.com/rustls/rustls-ffi/pull/128> + */ +#define TLS_MACHINE_CERTS 1 + + +typedef enum { + TLS_CLIENT_AUTH_UNSET, + TLS_CLIENT_AUTH_NONE, + TLS_CLIENT_AUTH_REQUIRED, + TLS_CLIENT_AUTH_OPTIONAL, +} tls_client_auth_t; + +typedef enum { + TLS_CONF_ST_INIT, + TLS_CONF_ST_INCOMING_DONE, + TLS_CONF_ST_OUTGOING_DONE, + TLS_CONF_ST_DONE, +} tls_conf_status_t; + +/* The global module configuration, created after post-config + * and then readonly. + */ +typedef struct { + server_rec *ap_server; /* the global server we initialized on */ + const char *module_version; + const char *crustls_version; + + tls_conf_status_t status; + int mod_proxy_post_config_done; /* if mod_proxy did its post-config things */ + + server_addr_rec *tls_addresses; /* the addresses/ports our engine is enabled on */ + apr_array_header_t *proxy_configs; /* tls_conf_proxy_t* collected from everywhere */ + + struct tls_proto_conf_t *proto; /* TLS protocol/rustls specific globals */ + apr_hash_t *var_lookups; /* variable lookup functions by var name */ + struct tls_cert_reg_t *cert_reg; /* all certified keys loaded */ + struct tls_cert_root_stores_t *stores; /* loaded certificate stores */ + struct tls_cert_verifiers_t *verifiers; /* registry of certificate verifiers */ + + const char *session_cache_spec; /* how the session cache was specified */ + const struct ap_socache_provider_t *session_cache_provider; /* provider used for session cache */ + struct ap_socache_instance_t *session_cache; /* session cache instance */ + struct apr_global_mutex_t *session_cache_mutex; /* global mutex for access to session cache */ + + const rustls_server_config *rustls_hello_config; /* used for initial client hello parsing */ +} tls_conf_global_t; + +/* The module configuration for a server (vhost). + * Populated during config parsing, merged and completed + * in the post config phase. Readonly after that. + */ +typedef struct { + server_rec *server; /* server this config belongs to */ + tls_conf_global_t *global; /* global module config, singleton */ + + int enabled; /* TLS_FLAG_TRUE if mod_tls is active on this server */ + apr_array_header_t *cert_specs; /* array of (tls_cert_spec_t*) of configured certificates */ + int tls_protocol_min; /* the minimum TLS protocol version to use */ + apr_array_header_t *tls_pref_ciphers; /* List of apr_uint16_t cipher ids to prefer */ + apr_array_header_t *tls_supp_ciphers; /* List of apr_uint16_t cipher ids to suppress */ + const apr_array_header_t *ciphersuites; /* Computed post-config, ordered list of rustls cipher suites */ + int honor_client_order; /* honor client cipher ordering */ + int strict_sni; + + const char *client_ca; /* PEM file with trust anchors for client certs */ + tls_client_auth_t client_auth; /* how client authentication with certificates is used */ + const char *var_user_name; /* which SSL variable to use as user name */ + + apr_array_header_t *certified_keys; /* rustls_certified_key list configured */ + int base_server; /* != 0 iff this is the base server */ + int service_unavailable; /* TLS not trustworthy configured, return 503s */ +} tls_conf_server_t; + +typedef struct { + server_rec *defined_in; /* the server/host defining this dir_conf */ + tls_conf_global_t *global; /* global module config, singleton */ + const char *proxy_ca; /* PEM file with trust anchors for proxied remote server certs */ + int proxy_protocol_min; /* the minimum TLS protocol version to use for proxy connections */ + apr_array_header_t *proxy_pref_ciphers; /* List of apr_uint16_t cipher ids to prefer */ + apr_array_header_t *proxy_supp_ciphers; /* List of apr_uint16_t cipher ids to suppress */ + apr_array_header_t *machine_cert_specs; /* configured machine certificates specs */ + apr_array_header_t *machine_certified_keys; /* rustls_certified_key list */ + const rustls_client_config *rustls_config; +} tls_conf_proxy_t; + +typedef struct { + int std_env_vars; + int export_cert_vars; + int proxy_enabled; /* TLS_FLAG_TRUE if mod_tls is active on outgoing connections */ + const char *proxy_ca; /* PEM file with trust anchors for proxied remote server certs */ + int proxy_protocol_min; /* the minimum TLS protocol version to use for proxy connections */ + apr_array_header_t *proxy_pref_ciphers; /* List of apr_uint16_t cipher ids to prefer */ + apr_array_header_t *proxy_supp_ciphers; /* List of apr_uint16_t cipher ids to suppress */ + apr_array_header_t *proxy_machine_cert_specs; /* configured machine certificates specs */ + + tls_conf_proxy_t *proxy_config; +} tls_conf_dir_t; + +/* our static registry of configuration directives. */ +extern const command_rec tls_conf_cmds[]; + +/* create the modules configuration for a server_rec. */ +void *tls_conf_create_svr(apr_pool_t *pool, server_rec *s); + +/* merge (inherit) server configurations for the module. + * Settings in 'add' overwrite the ones in 'base' and unspecified + * settings shine through. */ +void *tls_conf_merge_svr(apr_pool_t *pool, void *basev, void *addv); + +/* create the modules configuration for a directory. */ +void *tls_conf_create_dir(apr_pool_t *pool, char *dir); + +/* merge (inherit) directory configurations for the module. + * Settings in 'add' overwrite the ones in 'base' and unspecified + * settings shine through. */ +void *tls_conf_merge_dir(apr_pool_t *pool, void *basev, void *addv); + + +/* Get the server specific module configuration. */ +tls_conf_server_t *tls_conf_server_get(server_rec *s); + +/* Get the directory specific module configuration for the request. */ +tls_conf_dir_t *tls_conf_dir_get(request_rec *r); + +/* Get the directory specific module configuration for the server. */ +tls_conf_dir_t *tls_conf_dir_server_get(server_rec *s); + +/* If any configuration values are unset, supply the global server defaults. */ +apr_status_t tls_conf_server_apply_defaults(tls_conf_server_t *sc, apr_pool_t *p); + +/* If any configuration values are unset, supply the global dir defaults. */ +apr_status_t tls_conf_dir_apply_defaults(tls_conf_dir_t *dc, apr_pool_t *p); + +/* create a new proxy configuration from directory config in server */ +tls_conf_proxy_t *tls_conf_proxy_make( + apr_pool_t *p, tls_conf_dir_t *dc, tls_conf_global_t *gc, server_rec *s); + +int tls_proxy_section_post_config( + apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s, + ap_conf_vector_t *section_config); + +#endif /* tls_conf_h */ |