X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/4b8483ae278577a3adc8d84da81d77019704466f..refs/heads/master:/keydb.h diff --git a/keydb.h b/keydb.h index ca8fdf7..20ab62f 100644 --- a/keydb.h +++ b/keydb.h @@ -1,86 +1,198 @@ -/* - * keydb.h - Routines to store and fetch keys. +/** + * @file keydb.h + * @brief Routines to store and fetch keys. + * + * Copyright 2002-2004 Jonathan McDowell + * + * This program is free software: you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; version 2 of the License. * - * Jonathan McDowell + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. * - * Copyright 2002 Project Purple + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 51 + * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef __KEYDB_H__ #define __KEYDB_H__ -// #include #include #include "keystructs.h" #include "ll.h" /** - * initdb - Initialize the key database. + * @brief All of the functions a DB backend exports. + */ +struct dbfuncs { +/** + * @brief Initialize the key database. + * @param readonly If we'll only be reading the DB, not writing to it. + * + * This function should be called before any of the other functions in + * this file are called in order to allow the DB to be initialized ready + * for access. + */ + void (*initdb)(bool readonly); + +/** + * @brief De-initialize the key database. + * + * This function should be called upon program exit to allow the DB to + * cleanup after itself. + */ + void (*cleanupdb)(void); + +/** + * @brief Start a transaction. * - * This function should be called before any of the other functions in - * this file are called in order to allow the DB to be initialized ready - * for access. + * Start a transaction. Intended to be used if we're about to perform many + * operations on the database to help speed it all up, or if we want + * something to only succeed if all relevant operations are successful. */ -void initdb(void); + bool (*starttrans)(void); /** - * cleanupdb - De-initialize the key database. + * @brief End a transaction. * - * This function should be called upon program exit to allow the DB to - * cleanup after itself. + * Ends a transaction. */ -void cleanupdb(void); + void (*endtrans)(void); /** - * fetch_key - Given a keyid fetch the key from storage. - * @keyid: The keyid to fetch. - * @publickey: A pointer to a structure to return the key in. + * @brief Given a keyid fetch the key from storage. + * @param keyid The keyid to fetch. + * @param publickey A pointer to a structure to return the key in. + * @param intrans If we're already in a transaction. * - * This function returns a public key from whatever storage mechanism we - * are using. + * This function returns a public key from whatever storage mechanism we + * are using. * - * TODO: What about keyid collisions? Should we use fingerprint instead? + * TODO: What about keyid collisions? Should we use fingerprint instead? */ -int fetch_key(uint64_t keyid, struct openpgp_publickey **publickey); + int (*fetch_key)(uint64_t keyid, struct openpgp_publickey **publickey, + bool intrans); /** - * store_key - Takes a key and stores it. - * @publickey: A pointer to the public key to store. + * @brief Takes a key and stores it. + * @param publickey A pointer to the public key to store. + * @param intrans If we're already in a transaction. + * @param update If true the key exists and should be updated. * - * This function stores a public key in whatever storage mechanism we are - * using. + * This function stores a public key in whatever storage mechanism we are + * using. intrans indicates if we're already in a transaction so don't + * need to start one. update indicates if the key already exists and is + * just being updated. + * + * TODO: Do we store multiple keys of the same id? Or only one and replace it? + */ + int (*store_key)(struct openpgp_publickey *publickey, bool intrans, + bool update); + +/** + * @brief Given a keyid delete the key from storage. + * @param keyid The keyid to delete. + * @param intrans If we're already in a transaction. * - * TODO: Do we store multiple keys of the same id? Or only one and replace - * it? + * This function deletes a public key from whatever storage mechanism we + * are using. Returns 0 if the key existed. */ -int store_key(struct openpgp_publickey *publickey); + int (*delete_key)(uint64_t keyid, bool intrans); /** - * delete_key - Given a keyid delete the key from storage. - * @keyid: The keyid to delete. + * @brief Trys to find the keys that contain the supplied text. + * @param search The text to search for. + * @param publickey A pointer to a structure to return the key in. * - * This function deletes a public key from whatever storage mechanism we - * are using. Returns 0 if the key existed. + * This function searches for the supplied text and returns the keys that + * contain it. */ -int delete_key(uint64_t keyid); + int (*fetch_key_text)(const char *search, + struct openpgp_publickey **publickey); /** - * keyid2uid - Takes a keyid and returns the primary UID for it. - * @keyid: The keyid to lookup. + * @brief Tries to find the keys from an SKS hash + * @param hash The hash to search for. + * @param publickey A pointer to a structure to return the key in. * - * This function returns a UID for the given key. Returns NULL if the key - * isn't found. + * This function looks for the key that is referenced by the supplied + * SKS hash and returns it. */ -char *keyid2uid(uint64_t keyid); + int (*fetch_key_skshash)(const struct skshash *hash, + struct openpgp_publickey **publickey); /** - * getkeysigs - Gets a linked list of the signatures on a key. - * @keyid: The keyid to get the sigs for. + * @brief Takes a list of public keys and updates them in the DB. + * @param keys The keys to update in the DB. + * @param sendsync If we should send a keysync mail. + * + * Takes a list of keys and adds them to the database, merging them with + * the key in the database if it's already present there. The key list is + * update to contain the minimum set of updates required to get from what + * we had before to what we have now (ie the set of data that was added to + * the DB). Returns the number of entirely new keys added. + * + * If sendsync is true then we send out a keysync mail to our sync peers + * with the update. + */ + int (*update_keys)(struct openpgp_publickey **keys, bool sendsync); + +/** + * @brief Takes a keyid and returns the primary UID for it. + * @param keyid The keyid to lookup. + * + * This function returns a UID for the given key. Returns NULL if the key + * isn't found. + */ + char * (*keyid2uid)(uint64_t keyid); + +/** + * @brief Gets a linked list of the signatures on a key. + * @param keyid The keyid to get the sigs for. + * @param revoked Is the key revoked? + * + * This function gets the list of signatures on a key. Used for key + * indexing and doing stats bits. If revoked is non-NULL then if the key + * is revoked it's set to true. + */ + struct ll * (*getkeysigs)(uint64_t keyid, bool *revoked); + +/** + * @brief Gets the signatures on a key. + * @param keyid The key we want the signatures for. + * + * This function gets the signatures on a key. It's the same as the + * getkeysigs function above except we use the hash module to cache the + */ + struct ll * (*cached_getkeysigs)(uint64_t keyid); + +/** + * @brief Maps a 32 bit key id to a 64 bit one. + * @param keyid The 32 bit keyid. + * + * This function maps a 32 bit key id to the full 64 bit one. It returns the + * full keyid. If the key isn't found a keyid of 0 is returned. + */ + uint64_t (*getfullkeyid)(uint64_t keyid); + +/** + * @brief call a function once for each key in the db. + * @param iterfunc The function to call. + * @param ctx A context pointer + * + * Calls iterfunc once for each key in the database. ctx is passed + * unaltered to iterfunc. This function is intended to aid database dumps + * and statistic calculations. * - * This function gets the list of signatures on a key. Used for key - * indexing and doing stats bits. + * Returns the number of keys we iterated over. */ -struct ll *getkeysigs(uint64_t keyid); + int (*iterate_keys)(void (*iterfunc)(void *ctx, + struct openpgp_publickey *key), void *ctx); +}; #endif /* __KEYDB_H__ */