/*
* keydb_dynamic.c - backend that can load the other backends
*
- * Brett Parker <iDunno@sommitrealweird.co.uk>
+ * Copyright 2005 Brett Parker <iDunno@sommitrealweird.co.uk>
*
- * Copyright 2005 Project Purple
+ * 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, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
+#include <dlfcn.h>
#include <stdio.h>
+#include <string.h>
#include "decodekey.h"
#include "hash.h"
#include "keydb.h"
#include "keyid.h"
#include "keystructs.h"
+#include "log.h"
#include "mem.h"
#include "merge.h"
+#include "onak-conf.h"
+#include "openpgp.h"
#include "parsekey.h"
#include "sendsync.h"
-#include "keydb_dynamic.h"
-struct dynamic_backend *get_backend(void)
-{
- return &__dynamicdb_backend__;
-}
+static struct dbfuncs *loaded_backend = NULL;
+static void *backend_handle;
-bool backend_loaded(void)
+static bool close_backend(void)
{
- return __dynamicdb_backend__.loaded;
+ loaded_backend = NULL;
+ dlclose(backend_handle);
+ backend_handle = NULL;
+
+ return true;
}
-bool load_backend(void)
+static bool load_backend(void)
{
char *soname = NULL;
- void *handle;
- struct dynamic_backend *backend = get_backend();
+ char *funcsname = NULL;
- if (backend->loaded) {
+ if (loaded_backend != NULL) {
close_backend();
+ loaded_backend = NULL;
+ }
+
+ if (config.use_keyd) {
+ free(config.db_backend);
+ config.db_backend = strdup("keyd");
}
if (!config.db_backend) {
logthing(LOGTHING_INFO, "Loading dynamic backend: %s", soname);
- handle = dlopen(soname, RTLD_LAZY);
- if (handle == NULL) {
+ backend_handle = dlopen(soname, RTLD_LAZY);
+ if (backend_handle == NULL) {
logthing(LOGTHING_CRITICAL,
"Failed to open handle to library '%s': %s",
soname, dlerror());
soname = NULL;
exit(EXIT_FAILURE);
}
+
+ funcsname = malloc(strlen(config.db_backend)
+ + strlen("keydb_")
+ + strlen("_funcs")
+ + 1);
+ sprintf(funcsname, "keydb_%s_funcs", config.db_backend);
+
+ loaded_backend = dlsym(backend_handle, funcsname);
+ free(funcsname);
+
+ if (loaded_backend == NULL) {
+ logthing(LOGTHING_CRITICAL,
+ "Failed to find dbfuncs structure in library "
+ "'%s' : %s", soname, dlerror());
+ free(soname);
+ soname = NULL;
+ exit(EXIT_FAILURE);
+ }
free(soname);
soname = NULL;
- backend->initdb = (initdbfunc_t) dlsym(handle, "initdb");
- backend->cleanupdb = (cleanupdbfunc_t) dlsym(handle, "cleanupdb");
- backend->starttrans = (starttransfunc_t) dlsym(handle, "starttrans");
- backend->endtrans = (endtransfunc_t) dlsym(handle, "endtrans");
- backend->fetch_key = (fetch_keyfunc_t) dlsym(handle, "fetch_key");
- backend->store_key = (store_keyfunc_t) dlsym(handle, "store_key");
- backend->delete_key = (delete_keyfunc_t) dlsym(handle, "delete_key");
- backend->fetch_key_text = (fetch_key_textfunc_t)
- dlsym (handle, "fetch_key_text");
- backend->update_keys = (update_keysfunc_t)
- dlsym(handle, "update_keys");
- backend->keyid2uid = (keyid2uidfunc_t) dlsym(handle, "keyid2uid");
- backend->cached_getkeysigs = (cached_getkeysigsfunc_t)
- dlsym(handle, "cached_getkeysigs");
- backend->getfullkeyid = (getfullkeyidfunc_t)
- dlsym(handle, "getfullkeyid");
- backend->iterate_keys = (iterate_keysfunc_t)
- dlsym(handle, "iterate_keys");
-
- backend->handle = handle;
- backend->loaded = true;
-
return true;
}
-bool close_backend(void)
+static bool dynamic_starttrans()
{
- struct dynamic_backend *backend;
- backend = get_backend();
+ if (loaded_backend == NULL) {
+ load_backend();
+ }
- backend->initdb = NULL;
- backend->cleanupdb = NULL;
- backend->starttrans = NULL;
- backend->endtrans = NULL;
- backend->fetch_key = NULL;
- backend->store_key = NULL;
- backend->delete_key = NULL;
- backend->fetch_key_text = NULL;
- backend->update_keys = NULL;
- backend->keyid2uid = NULL;
- backend->cached_getkeysigs = NULL;
- backend->getfullkeyid = NULL;
- backend->iterate_keys = NULL;
- backend->loaded = false;
- dlclose(backend->handle);
- backend->handle = NULL;
+ if (loaded_backend != NULL) {
+ if (loaded_backend->starttrans != NULL) {
+ return loaded_backend->starttrans();
+ }
+ }
- return true;
+ return false;
+}
+
+static void dynamic_endtrans()
+{
+ if (loaded_backend == NULL) {
+ load_backend();
+ }
+
+ if (loaded_backend != NULL) {
+ if (loaded_backend->endtrans != NULL) {
+ loaded_backend->endtrans();
+ }
+ }
+}
+
+static int dynamic_fetch_key(uint64_t keyid,
+ struct openpgp_publickey **publickey, bool intrans)
+{
+ if (loaded_backend == NULL) {
+ load_backend();
+ }
+
+ if (loaded_backend != NULL) {
+ if (loaded_backend->fetch_key != NULL) {
+ return loaded_backend->fetch_key(keyid,publickey,intrans);
+ }
+ }
+
+ return -1;
+}
+
+static int dynamic_store_key(struct openpgp_publickey *publickey, bool intrans,
+ bool update)
+{
+ if (loaded_backend == NULL) {
+ load_backend();
+ }
+
+ if (loaded_backend != NULL) {
+ if (loaded_backend->store_key != NULL) {
+ return loaded_backend->store_key(publickey,intrans,update);
+ }
+ }
+
+ return -1;
+}
+
+static int dynamic_delete_key(uint64_t keyid, bool intrans)
+{
+ if (loaded_backend == NULL) {
+ load_backend();
+ }
+
+ if (loaded_backend != NULL) {
+ if (loaded_backend->delete_key != NULL) {
+ return loaded_backend->delete_key(keyid, intrans);
+ }
+ }
+
+ return -1;
+}
+
+static int dynamic_fetch_key_text(const char *search,
+ struct openpgp_publickey **publickey)
+{
+ if (loaded_backend == NULL) {
+ load_backend();
+ }
+
+ if (loaded_backend != NULL) {
+ if (loaded_backend->fetch_key_text != NULL) {
+ return loaded_backend->fetch_key_text(search, publickey);
+ }
+ }
+
+ return -1;
+}
+
+static int dynamic_fetch_key_skshash(const struct skshash *hash,
+ struct openpgp_publickey **publickey)
+{
+ if (loaded_backend == NULL) {
+ load_backend();
+ }
+
+ if (loaded_backend != NULL) {
+ if (loaded_backend->fetch_key_skshash != NULL) {
+ return loaded_backend->fetch_key_skshash(hash,
+ publickey);
+ }
+ }
+
+ return -1;
+}
+
+static int dynamic_iterate_keys(void (*iterfunc)(void *ctx,
+ struct openpgp_publickey *key), void *ctx)
+{
+ if (loaded_backend == NULL) {
+ load_backend();
+ }
+
+ if (loaded_backend != NULL) {
+ if (loaded_backend->iterate_keys != NULL) {
+ return loaded_backend->iterate_keys(iterfunc, ctx);
+ }
+ }
+
+ return -1;
}
/**
* keyid2uid - Takes a keyid and returns the primary UID for it.
* @keyid: The keyid to lookup.
*/
-char *keyid2uid(uint64_t keyid)
+static char *dynamic_keyid2uid(uint64_t keyid)
{
struct openpgp_publickey *publickey = NULL;
struct openpgp_signedpacket_list *curuid = NULL;
char buf[1024];
- struct dynamic_backend *backend;
- if (!backend_loaded()) {
+ if (loaded_backend == NULL) {
load_backend();
}
- if (backend_loaded()) {
- backend = get_backend();
- if (backend->keyid2uid != NULL) {
- return backend->keyid2uid(keyid);
+ if (loaded_backend != NULL) {
+ if (loaded_backend->keyid2uid != NULL) {
+ return loaded_backend->keyid2uid(keyid);
}
}
buf[0]=0;
- if (fetch_key(keyid, &publickey, false) && publickey != NULL) {
+ if (dynamic_fetch_key(keyid, &publickey, false) && publickey != NULL) {
curuid = publickey->uids;
while (curuid != NULL && buf[0] == 0) {
- if (curuid->packet->tag == 13) {
+ if (curuid->packet->tag == OPENPGP_PACKET_UID) {
snprintf(buf, 1023, "%.*s",
(int) curuid->packet->length,
curuid->packet->data);
* 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)
+static struct ll *dynamic_getkeysigs(uint64_t keyid, bool *revoked)
{
struct ll *sigs = NULL;
struct openpgp_signedpacket_list *uids = NULL;
struct openpgp_publickey *publickey = NULL;
- struct dynamic_backend *backend;
- if ( !backend_loaded() ) {
+ if ( loaded_backend == NULL ) {
load_backend();
}
- if (backend_loaded()) {
- backend = get_backend();
- if (backend->getkeysigs != NULL) {
- return backend->getkeysigs(keyid,revoked);
+ if (loaded_backend != NULL) {
+ if (loaded_backend->getkeysigs != NULL) {
+ return loaded_backend->getkeysigs(keyid,revoked);
}
}
- fetch_key(keyid, &publickey, false);
+ dynamic_fetch_key(keyid, &publickey, false);
if (publickey != NULL) {
for (uids = publickey->uids; uids != NULL; uids = uids->next) {
sigs = keysigs(sigs, uids->sigs);
}
if (revoked != NULL) {
- *revoked = (publickey->revocations != NULL);
+ *revoked = publickey->revoked;
}
free_publickey(publickey);
}
* getkeysigs function above except we use the hash module to cache the
* data so if we need it again it's already loaded.
*/
-struct ll *cached_getkeysigs(uint64_t keyid)
+static struct ll *dynamic_cached_getkeysigs(uint64_t keyid)
{
struct stats_key *key = NULL;
struct stats_key *signedkey = NULL;
struct ll *cursig = NULL;
bool revoked = false;
-
- struct dynamic_backend *backend;
if (keyid == 0) {
return NULL;
}
- if (!backend_loaded()) {
+ if (loaded_backend == NULL) {
load_backend();
}
- if (backend_loaded()) {
- backend = get_backend();
- if (backend->cached_getkeysigs != NULL) {
- return backend->cached_getkeysigs(keyid);
+ if (loaded_backend != NULL) {
+ if (loaded_backend->cached_getkeysigs != NULL) {
+ return loaded_backend->cached_getkeysigs(keyid);
}
}
key = createandaddtohash(keyid);
if (key->gotsigs == false) {
- key->sigs = getkeysigs(key->keyid, &revoked);
+ key->sigs = dynamic_getkeysigs(key->keyid, &revoked);
key->revoked = revoked;
for (cursig = key->sigs; cursig != NULL;
cursig = cursig->next) {
* 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)
+static uint64_t dynamic_getfullkeyid(uint64_t keyid)
{
struct openpgp_publickey *publickey = NULL;
- struct dynamic_backend *backend;
-
- if (!backend_loaded()) {
+
+ if (loaded_backend == NULL) {
load_backend();
}
- if (backend_loaded()) {
- backend = get_backend();
- if (backend->getfullkeyid != NULL) {
- return backend->getfullkeyid(keyid);
+ if (loaded_backend != NULL) {
+ if (loaded_backend->getfullkeyid != NULL) {
+ return loaded_backend->getfullkeyid(keyid);
}
}
if (keyid < 0x100000000LL) {
- fetch_key(keyid, &publickey, false);
+ dynamic_fetch_key(keyid, &publickey, false);
if (publickey != NULL) {
keyid = get_keyid(publickey);
free_publickey(publickey);
* 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.
*/
-int update_keys(struct openpgp_publickey **keys, bool sendsync)
+static int dynamic_update_keys(struct openpgp_publickey **keys, bool sendsync)
{
struct openpgp_publickey *curkey = NULL;
struct openpgp_publickey *oldkey = NULL;
struct openpgp_publickey *prev = NULL;
- struct dynamic_backend *backend;
int newkeys = 0;
bool intrans;
- if (!backend_loaded()) {
+ if (loaded_backend == NULL) {
load_backend();
}
- if (backend_loaded()) {
- backend = get_backend();
- if (backend->update_keys != NULL) {
- return backend->update_keys(keys, sendsync);
+ if (loaded_backend != NULL) {
+ if (loaded_backend->update_keys != NULL) {
+ return loaded_backend->update_keys(keys, sendsync);
}
}
for (curkey = *keys; curkey != NULL; curkey = curkey->next) {
- intrans = starttrans();
+ intrans = dynamic_starttrans();
logthing(LOGTHING_INFO,
- "Fetching key 0x%llX, result: %d",
+ "Fetching key 0x%" PRIX64 ", result: %d",
get_keyid(curkey),
- fetch_key(get_keyid(curkey), &oldkey, intrans));
+ dynamic_fetch_key(get_keyid(curkey), &oldkey, intrans));
/*
* If we already have the key stored in the DB then merge it
*/
if (oldkey != NULL) {
merge_keys(oldkey, curkey);
- if (curkey->revocations == NULL &&
+ if (curkey->sigs == NULL &&
curkey->uids == NULL &&
curkey->subkeys == NULL) {
if (prev == NULL) {
prev = curkey;
logthing(LOGTHING_INFO,
"Merged key; storing updated key.");
- store_key(oldkey, intrans, true);
+ dynamic_store_key(oldkey, intrans, true);
}
free_publickey(oldkey);
oldkey = NULL;
} else {
logthing(LOGTHING_INFO,
"Storing completely new key.");
- store_key(curkey, intrans, false);
+ dynamic_store_key(curkey, intrans, false);
newkeys++;
}
- endtrans();
+ dynamic_endtrans();
intrans = false;
}
return newkeys;
}
-void initdb(bool readonly)
+static void dynamic_initdb(bool readonly)
{
- struct dynamic_backend *backend;
- backend = get_backend();
-
- if (!backend_loaded()) {
+ if (loaded_backend == NULL) {
load_backend();
}
- if (backend->loaded) {
- if (backend->initdb != NULL) {
- backend->initdb(readonly);
+ if (loaded_backend != NULL) {
+ if (loaded_backend->initdb != NULL) {
+ loaded_backend->initdb(readonly);
}
}
}
-void cleanupdb(void)
+static void dynamic_cleanupdb(void)
{
- struct dynamic_backend *backend;
- backend = get_backend();
-
- if (backend->loaded) {
- if (backend->cleanupdb != NULL) {
- backend->cleanupdb();
+ if (loaded_backend != NULL) {
+ if (loaded_backend->cleanupdb != NULL) {
+ loaded_backend->cleanupdb();
}
}
close_backend();
}
-bool starttrans()
-{
- struct dynamic_backend *backend;
- backend = get_backend();
-
- if (!backend_loaded()) {
- load_backend();
- }
-
- if (backend->loaded) {
- if (backend->starttrans != NULL) {
- return backend->starttrans();
- }
- }
-
- return false;
-}
-
-void endtrans()
-{
- struct dynamic_backend *backend;
- backend = get_backend();
-
- if (!backend_loaded()) {
- load_backend();
- }
-
- if (backend->loaded) {
- if (backend->endtrans != NULL) {
- backend->endtrans();
- }
- }
-}
-
-int fetch_key(uint64_t keyid, struct openpgp_publickey **publickey,
- bool intrans)
-{
- struct dynamic_backend *backend;
- backend = get_backend();
-
- if (!backend_loaded()) {
- load_backend();
- }
-
- if (backend->loaded) {
- if (backend->fetch_key != NULL) {
- return backend->fetch_key(keyid,publickey,intrans);
- }
- }
-
- return -1;
-}
-
-int store_key(struct openpgp_publickey *publickey, bool intrans, bool update)
-{
- struct dynamic_backend *backend;
- backend = get_backend();
-
- if (!backend_loaded()) {
- load_backend();
- }
-
- if (backend->loaded) {
- if (backend->store_key != NULL) {
- return backend->store_key(publickey,intrans,update);
- }
- }
-
- return -1;
-}
-
-int delete_key(uint64_t keyid, bool intrans)
-{
- struct dynamic_backend *backend;
- backend = get_backend();
-
- if (!backend_loaded()) {
- load_backend();
- }
-
- if (backend->loaded) {
- if (backend->delete_key != NULL) {
- return backend->delete_key(keyid, intrans);
- }
- }
-
- return -1;
-}
-
-int fetch_key_text(const char *search, struct openpgp_publickey **publickey)
-{
- struct dynamic_backend *backend;
- backend = get_backend();
-
- if (!backend_loaded()) {
- load_backend();
- }
-
- if (backend->loaded) {
- if (backend->fetch_key_text != NULL) {
- return backend->fetch_key_text(search, publickey);
- }
- }
-
- return -1;
-}
-
-int iterate_keys(void (*iterfunc)(void *ctx, struct openpgp_publickey *key),
- void *ctx)
-{
- struct dynamic_backend *backend;
- backend = get_backend();
-
- if (!backend_loaded()) {
- load_backend();
- }
-
- if (backend->loaded) {
- if (backend->iterate_keys != NULL) {
- return backend->iterate_keys(iterfunc, ctx);
- }
- }
-
- return -1;
-}
+struct dbfuncs keydb_dynamic_funcs = {
+ .initdb = dynamic_initdb,
+ .cleanupdb = dynamic_cleanupdb,
+ .starttrans = dynamic_starttrans,
+ .endtrans = dynamic_endtrans,
+ .fetch_key = dynamic_fetch_key,
+ .fetch_key_text = dynamic_fetch_key_text,
+ .fetch_key_skshash = dynamic_fetch_key_skshash,
+ .store_key = dynamic_store_key,
+ .update_keys = dynamic_update_keys,
+ .delete_key = dynamic_delete_key,
+ .getkeysigs = dynamic_getkeysigs,
+ .cached_getkeysigs = dynamic_cached_getkeysigs,
+ .keyid2uid = dynamic_keyid2uid,
+ .getfullkeyid = dynamic_getfullkeyid,
+ .iterate_keys = dynamic_iterate_keys,
+};
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