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+/* 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 mod_md_md_reg_h
+#define mod_md_md_reg_h
+
+struct apr_hash_t;
+struct apr_array_header_t;
+struct md_pkey_t;
+struct md_cert_t;
+struct md_result_t;
+struct md_pkey_spec_t;
+
+#include "md_store.h"
+
+/**
+ * A registry for managed domains with a md_store_t as persistence.
+ *
+ */
+typedef struct md_reg_t md_reg_t;
+
+/**
+ * Create the MD registry, using the pool and store.
+ * @param preg on APR_SUCCESS, the create md_reg_t
+ * @param pm memory pool to use for creation
+ * @param store the store to base on
+ * @param proxy_url optional URL of a proxy to use for requests
+ * @param ca_file optioinal CA trust anchor file to use
+ * @param min_delay minimum delay between renewal attempts for a domain
+ * @param retry_failover numer of failed renewals attempt to fail over to alternate ACME ca
+ */
+apr_status_t md_reg_create(md_reg_t **preg, apr_pool_t *pm, md_store_t *store,
+ const char *proxy_url, const char *ca_file,
+ apr_time_t min_delay, int retry_failover,
+ int use_store_locks, apr_time_t lock_wait_timeout);
+
+md_store_t *md_reg_store_get(md_reg_t *reg);
+
+apr_status_t md_reg_set_props(md_reg_t *reg, apr_pool_t *p, int can_http, int can_https);
+
+/**
+ * Add a new md to the registry. This will check the name for uniqueness and
+ * that domain names do not overlap with already existing mds.
+ */
+apr_status_t md_reg_add(md_reg_t *reg, md_t *md, apr_pool_t *p);
+
+/**
+ * Find the md, if any, that contains the given domain name.
+ * NULL if none found.
+ */
+md_t *md_reg_find(md_reg_t *reg, const char *domain, apr_pool_t *p);
+
+/**
+ * Find one md, which domain names overlap with the given md and that has a different
+ * name. There may be more than one existing md that overlaps. It is not defined
+ * which one will be returned.
+ */
+md_t *md_reg_find_overlap(md_reg_t *reg, const md_t *md, const char **pdomain, apr_pool_t *p);
+
+/**
+ * Get the md with the given unique name. NULL if it does not exist.
+ * Will update the md->state.
+ */
+md_t *md_reg_get(md_reg_t *reg, const char *name, apr_pool_t *p);
+
+/**
+ * Callback invoked for every md in the registry. If 0 is returned, iteration stops.
+ */
+typedef int md_reg_do_cb(void *baton, md_reg_t *reg, md_t *md);
+
+/**
+ * Invoke callback for all mds in this registry. Order is not guaranteed.
+ * If the callback returns 0, iteration stops. Returns 0 if iteration was
+ * aborted.
+ */
+int md_reg_do(md_reg_do_cb *cb, void *baton, md_reg_t *reg, apr_pool_t *p);
+
+/**
+ * Bitmask for fields that are updated.
+ */
+#define MD_UPD_DOMAINS 0x00001
+#define MD_UPD_CA_URL 0x00002
+#define MD_UPD_CA_PROTO 0x00004
+#define MD_UPD_CA_ACCOUNT 0x00008
+#define MD_UPD_CONTACTS 0x00010
+#define MD_UPD_AGREEMENT 0x00020
+#define MD_UPD_DRIVE_MODE 0x00080
+#define MD_UPD_RENEW_WINDOW 0x00100
+#define MD_UPD_CA_CHALLENGES 0x00200
+#define MD_UPD_PKEY_SPEC 0x00400
+#define MD_UPD_REQUIRE_HTTPS 0x00800
+#define MD_UPD_TRANSITIVE 0x01000
+#define MD_UPD_MUST_STAPLE 0x02000
+#define MD_UPD_PROTO 0x04000
+#define MD_UPD_WARN_WINDOW 0x08000
+#define MD_UPD_STAPLING 0x10000
+#define MD_UPD_ALL 0x7FFFFFFF
+
+/**
+ * Update the given fields for the managed domain. Take the new
+ * values from the given md, all other values remain unchanged.
+ */
+apr_status_t md_reg_update(md_reg_t *reg, apr_pool_t *p,
+ const char *name, const md_t *md,
+ int fields, int check_consistency);
+
+/**
+ * Get the chain of public certificates of the managed domain md, starting with the cert
+ * of the domain and going up the issuers. Returns APR_ENOENT when not available.
+ */
+apr_status_t md_reg_get_pubcert(const md_pubcert_t **ppubcert, md_reg_t *reg,
+ const md_t *md, int i, apr_pool_t *p);
+
+/**
+ * Get the filenames of private key and pubcert of the MD - if they exist.
+ * @return APR_ENOENT if one or both do not exist.
+ */
+apr_status_t md_reg_get_cred_files(const char **pkeyfile, const char **pcertfile,
+ md_reg_t *reg, md_store_group_t group,
+ const md_t *md, struct md_pkey_spec_t *spec, apr_pool_t *p);
+
+/**
+ * Synchronize the given master mds with the store.
+ */
+apr_status_t md_reg_sync_start(md_reg_t *reg, apr_array_header_t *master_mds, apr_pool_t *p);
+
+/**
+ * Re-compute the state of the MD, given current store contents.
+ */
+apr_status_t md_reg_sync_finish(md_reg_t *reg, md_t *md, apr_pool_t *p, apr_pool_t *ptemp);
+
+
+apr_status_t md_reg_remove(md_reg_t *reg, apr_pool_t *p, const char *name, int archive);
+
+/**
+ * Delete the account from the local store.
+ */
+apr_status_t md_reg_delete_acct(md_reg_t *reg, apr_pool_t *p, const char *acct_id);
+
+
+/**
+ * Cleanup any challenges that are no longer in use.
+ *
+ * @param reg the registry
+ * @param p pool for permanent storage
+ * @param ptemp pool for temporary storage
+ * @param mds the list of configured MDs
+ */
+apr_status_t md_reg_cleanup_challenges(md_reg_t *reg, apr_pool_t *p, apr_pool_t *ptemp,
+ apr_array_header_t *mds);
+
+/**
+ * Mark all information from group MD_SG_DOMAINS as readonly, deny future modifications
+ * (MD_SG_STAGING and MD_SG_CHALLENGES remain writeable). For the given MDs, cache
+ * the public information (MDs themselves and their pubcerts or lack of).
+ */
+apr_status_t md_reg_freeze_domains(md_reg_t *reg, apr_array_header_t *mds);
+
+/**
+ * Return if the certificate of the MD should be renewed. This includes reaching
+ * the renewal window of an otherwise valid certificate. It return also !0 iff
+ * no certificate has been obtained yet.
+ */
+int md_reg_should_renew(md_reg_t *reg, const md_t *md, apr_pool_t *p);
+
+/**
+ * Return the timestamp when the certificate should be renewed. A value of 0
+ * indicates that that renewal is not configured (see renew_mode).
+ */
+apr_time_t md_reg_renew_at(md_reg_t *reg, const md_t *md, apr_pool_t *p);
+
+/**
+ * Return the timestamp up to which *all* certificates for the MD can be used.
+ * A value of 0 indicates that there is no certificate.
+ */
+apr_time_t md_reg_valid_until(md_reg_t *reg, const md_t *md, apr_pool_t *p);
+
+/**
+ * Return if a warning should be issued about the certificate expiration.
+ * This applies the configured warn window to the remaining lifetime of the
+ * current certiciate. If no certificate is present, this returns 0.
+ */
+int md_reg_should_warn(md_reg_t *reg, const md_t *md, apr_pool_t *p);
+
+/**************************************************************************************************/
+/* protocol drivers */
+
+typedef struct md_proto_t md_proto_t;
+
+typedef struct md_proto_driver_t md_proto_driver_t;
+
+/**
+ * Operating environment for a protocol driver. This is valid only for the
+ * duration of one run (init + renew, init + preload).
+ */
+struct md_proto_driver_t {
+ const md_proto_t *proto;
+ apr_pool_t *p;
+ void *baton;
+ struct apr_table_t *env;
+
+ md_reg_t *reg;
+ md_store_t *store;
+ const char *proxy_url;
+ const char *ca_file;
+ const md_t *md;
+
+ int can_http;
+ int can_https;
+ int reset;
+ int attempt;
+ int retry_failover;
+ apr_interval_time_t activation_delay;
+};
+
+typedef apr_status_t md_proto_init_cb(md_proto_driver_t *driver, struct md_result_t *result);
+typedef apr_status_t md_proto_renew_cb(md_proto_driver_t *driver, struct md_result_t *result);
+typedef apr_status_t md_proto_init_preload_cb(md_proto_driver_t *driver, struct md_result_t *result);
+typedef apr_status_t md_proto_preload_cb(md_proto_driver_t *driver,
+ md_store_group_t group, struct md_result_t *result);
+typedef apr_status_t md_proto_complete_md_cb(md_t *md, apr_pool_t *p);
+
+struct md_proto_t {
+ const char *protocol;
+ md_proto_init_cb *init;
+ md_proto_renew_cb *renew;
+ md_proto_init_preload_cb *init_preload;
+ md_proto_preload_cb *preload;
+ md_proto_complete_md_cb *complete_md;
+};
+
+/**
+ * Run a test initialization of the renew protocol for the given MD. This verifies
+ * basic parameter settings and is expected to return a description of encountered
+ * problems in <pmessage> when != APR_SUCCESS.
+ * A message return is allocated fromt the given pool.
+ */
+apr_status_t md_reg_test_init(md_reg_t *reg, const md_t *md, struct apr_table_t *env,
+ struct md_result_t *result, apr_pool_t *p);
+
+/**
+ * Obtain new credentials for the given managed domain in STAGING.
+ * @param reg the registry instance
+ * @param md the mdomain to renew
+ * @param env global environment of settings
+ * @param reset != 0 if any previous, partial information should be wiped
+ * @param attempt the number of attempts made this far (for this md)
+ * @param result for reporting results of the renewal
+ * @param p the memory pool to use
+ * @return APR_SUCCESS if new credentials have been staged successfully
+ */
+apr_status_t md_reg_renew(md_reg_t *reg, const md_t *md,
+ struct apr_table_t *env, int reset, int attempt,
+ struct md_result_t *result, apr_pool_t *p);
+
+/**
+ * Load a new set of credentials for the managed domain from STAGING - if it exists.
+ * This will archive any existing credential data and make the staged set the new one
+ * in DOMAINS.
+ * If staging is incomplete or missing, the load will fail and all credentials remain
+ * as they are.
+ *
+ * @return APR_SUCCESS on loading new data, APR_ENOENT when nothing is staged, error otherwise.
+ */
+apr_status_t md_reg_load_staging(md_reg_t *reg, const md_t *md, struct apr_table_t *env,
+ struct md_result_t *result, apr_pool_t *p);
+
+/**
+ * Check given MDomains for new data in staging areas and, if it exists, load
+ * the new credentials. On encountering errors, leave the credentails as
+ * they are.
+ */
+apr_status_t md_reg_load_stagings(md_reg_t *reg, apr_array_header_t *mds,
+ apr_table_t *env, apr_pool_t *p);
+
+void md_reg_set_renew_window_default(md_reg_t *reg, md_timeslice_t *renew_window);
+void md_reg_set_warn_window_default(md_reg_t *reg, md_timeslice_t *warn_window);
+
+struct md_job_t *md_reg_job_make(md_reg_t *reg, const char *mdomain, apr_pool_t *p);
+
+/**
+ * Acquire a cooperative, global lock on registry modifications. Will
+ * do nothing if locking is not configured.
+ *
+ * This will only prevent other children/processes/cluster nodes from
+ * doing the same and does not protect individual store functions from
+ * being called without it.
+ * @param reg the registy
+ * @param p memory pool to use
+ * @param max_wait maximum time to wait in order to acquire
+ * @return APR_SUCCESS when lock was obtained
+ */
+apr_status_t md_reg_lock_global(md_reg_t *reg, apr_pool_t *p);
+
+/**
+ * Realease the global registry lock. Will do nothing if there is no lock.
+ */
+void md_reg_unlock_global(md_reg_t *reg, apr_pool_t *p);
+
+#endif /* mod_md_md_reg_h */