/* * Ouroboros - Copyright (C) 2016 - 2017 * * DIF directory * * Dimitri Staessens <dimitri.staessens@ugent.be> * Sander Vrijders <sander.vrijders@ugent.be> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <ouroboros/config.h> #include <ouroboros/errno.h> #include <ouroboros/rib.h> #include "dir.h" #include "ipcp.h" #include "ribconfig.h" #include <stdlib.h> #include <string.h> #include <assert.h> static char dir_path[RIB_MAX_PATH_LEN + 1]; static void dir_path_reset(void) { dir_path[strlen(DIR_PATH)]= '\0'; assert(strcmp(DIR_PATH, dir_path) == 0); } int dir_init(void) { /* FIXME: set ribmgr dissemination here */ if (rib_add(RIB_ROOT, DIR_NAME)) return -1; strcpy(dir_path, DIR_PATH); return 0; } int dir_fini(void) { /* FIXME: remove ribmgr dissemination here*/ dir_path_reset(); rib_del(dir_path); return 0; } int dir_reg(const uint8_t * hash) { char hashstr[ipcp_dir_hash_strlen() + 1]; int ret; assert(hash); dir_path_reset(); ipcp_hash_str(hashstr, hash); ret = rib_add(dir_path, hashstr); if (ret == -ENOMEM) return -ENOMEM; rib_path_append(dir_path, hashstr); ret = rib_add(dir_path, ipcpi.name); if (ret == -EPERM) return -EPERM; if (ret == -ENOMEM) { if (rib_children(dir_path, NULL) == 0) rib_del(dir_path); return -ENOMEM; } return 0; } int dir_unreg(const uint8_t * hash) { char hashstr[ipcp_dir_hash_strlen() + 1]; size_t len; assert(hash); dir_path_reset(); ipcp_hash_str(hashstr, hash); rib_path_append(dir_path, hashstr); if (!rib_has(dir_path)) return 0; len = strlen(dir_path); rib_path_append(dir_path, ipcpi.name); rib_del(dir_path); dir_path[len] = '\0'; if (rib_children(dir_path, NULL) == 0) rib_del(dir_path); return 0; } int dir_query(const uint8_t * hash) { char hashstr[ipcp_dir_hash_strlen() + 1]; size_t len; dir_path_reset(); ipcp_hash_str(hashstr, hash); rib_path_append(dir_path, hashstr); if (!rib_has(dir_path)) return -1; /* FIXME: assert after local IPCP is deprecated */ len = strlen(dir_path); rib_path_append(dir_path, ipcpi.name); if (rib_has(dir_path)) { dir_path[len] = '\0'; if (rib_children(dir_path, NULL) == 1) return -1; } return 0; }