X-Git-Url: http://the.earth.li/gitweb/?a=blobdiff_plain;f=keydb%2Fkeydb_file.c;fp=keydb%2Fkeydb_file.c;h=ded6a9e2e0c8e9db23f245b93e02a20f67e3a369;hb=51c1a7dd950efef6a4d00df1878341777f8064ff;hp=0000000000000000000000000000000000000000;hpb=dfab9e96ee1fa4a10acf9c1cf644d7a4366a5af6;p=onak.git diff --git a/keydb/keydb_file.c b/keydb/keydb_file.c new file mode 100644 index 0000000..ded6a9e --- /dev/null +++ b/keydb/keydb_file.c @@ -0,0 +1,300 @@ +/* + * keydb.c - 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. + * + * 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. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "charfuncs.h" +#include "keydb.h" +#include "keyid.h" +#include "keystructs.h" +#include "log.h" +#include "mem.h" +#include "onak.h" +#include "onak-conf.h" +#include "parsekey.h" + +/** + * starttrans - Start a transaction. + * + * This is just a no-op for flat file access. + */ +static bool file_starttrans(struct onak_dbctx *dbctx) +{ + return true; +} + +/** + * endtrans - End a transaction. + * + * This is just a no-op for flat file access. + */ +static void file_endtrans(struct onak_dbctx *dbctx) +{ + return; +} + +/** + * fetch_key_id - 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. + * + * We use the hex representation of the keyid as the filename to fetch the + * key from. The key is stored in the file as a binary OpenPGP stream of + * packets, so we can just use read_openpgp_stream() to read the packets + * in and then parse_keys() to parse the packets into a publickey + * structure. + */ +static int file_fetch_key_id(struct onak_dbctx *dbctx, + uint64_t keyid, + struct openpgp_publickey **publickey, + bool intrans) +{ + char *db_dir = (char *) dbctx->priv; + struct openpgp_packet_list *packets = NULL; + char keyfile[1024]; + int fd = -1; + + snprintf(keyfile, 1023, "%s/0x%" PRIX64, db_dir, + keyid & 0xFFFFFFFF); + fd = open(keyfile, O_RDONLY); // | O_SHLOCK); + + if (fd > -1) { + read_openpgp_stream(file_fetchchar, &fd, &packets, 0); + parse_keys(packets, publickey); + free_packet_list(packets); + packets = NULL; + close(fd); + } + + return (fd > -1); +} + +/** + * 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. + * + * Again we just use the hex representation of the keyid as the filename + * to store the key to. We flatten the public key to a list of OpenPGP + * packets and then use write_openpgp_stream() to write the stream out to + * the file. + */ +static int file_store_key(struct onak_dbctx *dbctx, + struct openpgp_publickey *publickey, bool intrans, + bool update) +{ + char *db_dir = (char *) dbctx->priv; + struct openpgp_packet_list *packets = NULL; + struct openpgp_packet_list *list_end = NULL; + struct openpgp_publickey *next = NULL; + char keyfile[1024]; + int fd = -1; + uint64_t keyid; + + if (get_keyid(publickey, &keyid) != ONAK_E_OK) { + logthing(LOGTHING_ERROR, "Couldn't find key ID for key."); + return 0; + } + snprintf(keyfile, 1023, "%s/0x%" PRIX64, db_dir, + keyid & 0xFFFFFFFF); + fd = open(keyfile, O_WRONLY | O_CREAT, 0664); // | O_EXLOCK); + + if (fd > -1) { + next = publickey -> next; + publickey -> next = NULL; + flatten_publickey(publickey, &packets, &list_end); + publickey -> next = next; + + write_openpgp_stream(file_putchar, &fd, packets); + close(fd); + free_packet_list(packets); + packets = NULL; + } + + return (fd > -1); +} + +/** + * delete_key - Given a keyid delete the key from storage. + * @fp: The fingerprint of the key 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. + */ +static int file_delete_key(struct onak_dbctx *dbctx, + struct openpgp_fingerprint *fp, bool intrans) +{ + char *db_dir = (char *) dbctx->priv; + char keyfile[1024]; + + snprintf(keyfile, 1023, "%s/0x%" PRIX64, db_dir, + fingerprint2keyid(fp) & 0xFFFFFFFF); + + return unlink(keyfile); +} + +/** + * fetch_key_text - Trys to find the keys that contain the supplied text. + * @search: The text to search for. + * @publickey: A pointer to a structure to return the key in. + * + * This function searches for the supplied text and returns the keys that + * contain it. + * + * TODO: Write for flat file access. Some sort of grep? + */ +static int file_fetch_key_text(struct onak_dbctx *dbctx, + const char *search, + struct openpgp_publickey **publickey) +{ + return 0; +} + +/** + * 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. + */ +static int file_iterate_keys(struct onak_dbctx *dbctx, + void (*iterfunc)(void *ctx, struct openpgp_publickey *key), + void *ctx) +{ + char *db_dir = (char *) dbctx->priv; + int numkeys = 0; + struct openpgp_packet_list *packets = NULL; + struct openpgp_publickey *key = NULL; + DIR *dir; + char keyfile[1024]; + int fd = -1; + struct dirent *curfile = NULL; + + dir = opendir(db_dir); + + if (dir != NULL) { + while ((curfile = readdir(dir)) != NULL) { + if (curfile->d_name[0] == '0' && + curfile->d_name[1] == 'x') { + snprintf(keyfile, 1023, "%s/%s", + db_dir, + curfile->d_name); + fd = open(keyfile, O_RDONLY); + + if (fd > -1) { + read_openpgp_stream(file_fetchchar, + &fd, + &packets, + 0); + parse_keys(packets, &key); + + iterfunc(ctx, key); + + free_publickey(key); + key = NULL; + free_packet_list(packets); + packets = NULL; + close(fd); + } + numkeys++; + } + } + + closedir(dir); + dir = NULL; + } + + return numkeys; +} + +/* + * Include the basic keydb routines. + */ +#define NEED_KEYID2UID 1 +#define NEED_GETKEYSIGS 1 +#define NEED_UPDATEKEYS 1 +#define NEED_GET_FP 1 +#include "keydb.c" + +/** + * cleanupdb - De-initialize the key database. + * + * This is just a no-op for flat file access. + */ +static void file_cleanupdb(struct onak_dbctx *dbctx) +{ + if (dbctx->priv != NULL) { + free(dbctx->priv); + dbctx->priv = NULL; + } + + if (dbctx != NULL) { + free(dbctx); + } +} + +/** + * initdb - Initialize the key database. + * + * This is just a no-op for flat file access. + */ +struct onak_dbctx *keydb_file_init(struct onak_db_config *dbcfg, bool readonly) +{ + struct onak_dbctx *dbctx; + + dbctx = malloc(sizeof(struct onak_dbctx)); + if (dbctx == NULL) { + return NULL; + } + + dbctx->config = dbcfg; + dbctx->priv = strdup(dbcfg->location); + + dbctx->cleanupdb = file_cleanupdb; + dbctx->starttrans = file_starttrans; + dbctx->endtrans = file_endtrans; + dbctx->fetch_key_id = file_fetch_key_id; + dbctx->fetch_key_fp = generic_fetch_key_fp; + dbctx->fetch_key_text = file_fetch_key_text; + dbctx->store_key = file_store_key; + dbctx->update_keys = generic_update_keys; + dbctx->delete_key = file_delete_key; + dbctx->getkeysigs = generic_getkeysigs; + dbctx->cached_getkeysigs = generic_cached_getkeysigs; + dbctx->keyid2uid = generic_keyid2uid; + dbctx->iterate_keys = file_iterate_keys; + + return dbctx; +}