--- /dev/null
+/*
+ * keydb.c - Routines to store and fetch keys.
+ *
+ * Copyright 2002-2004 Jonathan McDowell <noodles@earth.li>
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#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;
+}
projects / onak.git / blobdiff