X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/8e58a1769ce5e492dd68904dfc81b6e077fc2a3a..7ca3c239d76ae7112c166f29c35e11620ba93d9f:/keydb.h diff --git a/keydb.h b/keydb.h index 9a248e3..aaca122 100644 --- a/keydb.h +++ b/keydb.h @@ -3,26 +3,30 @@ * * Jonathan McDowell * - * Copyright 2002 Project Purple + * Copyright 2002-2004 Project Purple */ #ifndef __KEYDB_H__ #define __KEYDB_H__ -// #include #include #include "keystructs.h" #include "ll.h" +/** + * struct dbfuncs - All of the functions a DB backend exports. + */ +struct dbfuncs { /** * initdb - Initialize the key database. + * @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(void); + void (*initdb)(bool readonly); /** * cleanupdb - De-initialize the key database. @@ -30,40 +34,64 @@ void initdb(void); * This function should be called upon program exit to allow the DB to * cleanup after itself. */ -void cleanupdb(void); + void (*cleanupdb)(void); + +/** + * starttrans - Start a transaction. + * + * 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. + */ + bool (*starttrans)(void); + +/** + * endtrans - End a transaction. + * + * Ends a transaction. + */ + 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. + * @intrans: If we're already in a transaction. * * This function returns a public key from whatever storage mechanism we * are using. * * 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. + * @intrans: If we're already in a transaction. + * @update: If true the key exists and should be updated. * * This function stores a public key in whatever storage mechanism we are - * using. + * 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); + int (*store_key)(struct openpgp_publickey *publickey, bool intrans, + bool update); /** * delete_key - Given a keyid delete the key from storage. * @keyid: The keyid to delete. + * @intrans: If we're already in a transaction. * * This function deletes a public key from whatever storage mechanism we * are using. Returns 0 if the key existed. */ -int delete_key(uint64_t keyid); + int (*delete_key)(uint64_t keyid, bool intrans); /** * fetch_key_text - Trys to find the keys that contain the supplied text. @@ -73,7 +101,35 @@ int delete_key(uint64_t keyid); * This function searches for the supplied text and returns the keys that * contain it. */ -int fetch_key_text(const char *search, struct openpgp_publickey **publickey); + int (*fetch_key_text)(const char *search, + struct openpgp_publickey **publickey); + +/** + * fetch_key_skshash - Tries to find the keys from an SKS hash + * @hash: The hash to search for. + * @publickey: A pointer to a structure to return the key in. + * + * This function looks for the key that is referenced by the supplied + * SKS hash and returns it. + */ + int (*fetch_key_skshash)(const struct skshash *hash, + struct openpgp_publickey **publickey); + +/** + * update_keys - Takes a list of public keys and updates them in the DB. + * @keys: The keys to update in the DB. + * @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); /** * keyid2uid - Takes a keyid and returns the primary UID for it. @@ -82,15 +138,50 @@ int fetch_key_text(const char *search, struct openpgp_publickey **publickey); * This function returns a UID for the given key. Returns NULL if the key * isn't found. */ -char *keyid2uid(uint64_t keyid); + char * (*keyid2uid)(uint64_t keyid); /** * getkeysigs - Gets a linked list of the signatures on a key. * @keyid: The keyid to get the sigs for. + * @revoked: Is the key revoked? * * This function gets the list of signatures on a key. Used for key - * indexing and doing stats bits. + * 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); + +/** + * cached_getkeysigs - Gets the signatures on a key. + * @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); + +/** + * getfullkeyid - Maps a 32bit key id to a 64bit one. + * @keyid: The 32bit keyid. + * + * This function maps a 32bit key id to the full 64bit one. It returns the + * full keyid. If the key isn't found a keyid of 0 is returned. + */ + uint64_t (*getfullkeyid)(uint64_t keyid); + +/** + * iterate_keys - call a function once for each key in the db. + * @iterfunc: The function to call. + * @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. + * + * 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__ */