/* * Ouroboros - Copyright (C) 2016 - 2017 * * Normal IPC Process * * 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., http://www.fsf.org/about/contact/. */ #define _POSIX_C_SOURCE 200809L #include "config.h" #define OUROBOROS_PREFIX "normal-ipcp" #include <ouroboros/endian.h> #include <ouroboros/logs.h> #include <ouroboros/ipcp-dev.h> #include <ouroboros/time_utils.h> #include <ouroboros/irm.h> #include <ouroboros/rib.h> #include <ouroboros/hash.h> #include <ouroboros/errno.h> #include "addr_auth.h" #include "connmgr.h" #include "dir.h" #include "enroll.h" #include "fa.h" #include "dt.h" #include "ipcp.h" #include "ribconfig.h" #include "ribmgr.h" #include <stdbool.h> #include <signal.h> #include <stdlib.h> #include <string.h> #include <assert.h> #include <inttypes.h> #define THIS_TYPE IPCP_NORMAL static int boot_components(void) { char buf[256]; ssize_t len; enum pol_addr_auth pa; char path[RIB_MAX_PATH_LEN + 1]; len = rib_read(BOOT_PATH "/general/dif_name", buf, 256); if (len < 0) { log_err("Failed to read DIF name: %zd.", len); return -1; } ipcpi.dif_name = strdup(buf); if (ipcpi.dif_name == NULL) { log_err("Failed to set DIF name."); return -1; } len = rib_read(BOOT_PATH "/general/dir_hash_algo", &ipcpi.dir_hash_algo, sizeof(ipcpi.dir_hash_algo)); if (len < 0) { log_err("Failed to read hash length: %zd.", len); goto fail_addr_auth; } ipcpi.dir_hash_algo = ntoh32(ipcpi.dir_hash_algo); assert(ipcp_dir_hash_len() != 0); if (rib_add(MEMBERS_PATH, ipcpi.name)) { log_err("Failed to add name to " MEMBERS_PATH); goto fail_addr_auth; } log_dbg("Starting components."); if (rib_read(BOOT_PATH "/dt/addr_auth/type", &pa, sizeof(pa)) != sizeof(pa)) { log_err("Failed to read policy for address authority."); goto fail_addr_auth; } if (addr_auth_init(pa)) { log_err("Failed to init address authority."); goto fail_addr_auth; } ipcpi.dt_addr = addr_auth_address(); if (ipcpi.dt_addr == 0) { log_err("Failed to get a valid address."); goto fail_dir; } path[0] = '\0'; rib_path_append(rib_path_append(path, MEMBERS_NAME), ipcpi.name); if (rib_write(path, &ipcpi.dt_addr, sizeof(&ipcpi.dt_addr))) { log_err("Failed to write address to member object."); goto fail_dir; } log_dbg("IPCP got address %" PRIu64 ".", ipcpi.dt_addr); log_dbg("Starting ribmgr."); if (ribmgr_init()) { log_err("Failed to initialize RIB manager."); goto fail_ribmgr; } log_dbg("Ribmgr started."); if (dt_init()) { log_err("Failed to initialize data transfer ae."); goto fail_dt; } if (fa_init()) { log_err("Failed to initialize flow allocator ae."); goto fail_fa; } if (dt_start()) { log_err("Failed to start data transfer ae."); goto fail_dt_start; } if (fa_start()) { log_err("Failed to start flow allocator."); goto fail_fa_start; } if (dir_init()) { log_err("Failed to initialize directory."); goto fail_dir; } if (enroll_start()) { log_err("Failed to start enroll."); goto fail_enroll_start; } ipcp_set_state(IPCP_OPERATIONAL); if (connmgr_start()) { ipcp_set_state(IPCP_INIT); log_err("Failed to start AP connection manager."); goto fail_connmgr_start; } return 0; fail_connmgr_start: enroll_stop(); fail_enroll_start: dir_fini(); fail_dir: fa_stop(); fail_fa_start: dt_stop(); fail_dt_start: fa_fini(); fail_fa: dt_fini(); fail_dt: ribmgr_fini(); fail_ribmgr: addr_auth_fini(); fail_addr_auth: free(ipcpi.dif_name); return -1; } void shutdown_components(void) { connmgr_stop(); enroll_stop(); dir_fini(); fa_stop(); dt_stop(); fa_fini(); dt_fini(); ribmgr_fini(); addr_auth_fini(); free(ipcpi.dif_name); } static int normal_ipcp_enroll(const char * dst, struct dif_info * info) { if (rib_add(RIB_ROOT, MEMBERS_NAME)) { log_err("Failed to create members."); return -1; } /* Get boot state from peer */ if (enroll_boot(dst)) { log_err("Failed to boot IPCP components."); return -1; } if (boot_components()) { log_err("Failed to boot IPCP components."); return -1; } log_dbg("Enrolled with %s.", dst); info->dir_hash_algo = ipcpi.dir_hash_algo; strcpy(info->dif_name, ipcpi.dif_name); return 0; } const struct ros { char * parent; char * child; } ros[] = { /* BOOT INFO */ {RIB_ROOT, BOOT_NAME}, /* OTHER RIB STRUCTURES */ {RIB_ROOT, MEMBERS_NAME}, /* GENERAL IPCP INFO */ {BOOT_PATH, "general"}, {BOOT_PATH "/general", "dif_name"}, {BOOT_PATH "/general", "dir_hash_algo"}, /* DT COMPONENT */ {BOOT_PATH, "dt"}, {BOOT_PATH "/dt", "gam"}, {BOOT_PATH "/dt/gam", "type"}, {BOOT_PATH "/dt/gam", "cacep"}, {BOOT_PATH "/dt", "const"}, {BOOT_PATH "/dt/const", "addr_size"}, {BOOT_PATH "/dt/const", "fd_size"}, {BOOT_PATH "/dt/const", "has_ttl"}, {BOOT_PATH "/dt", "addr_auth"}, {BOOT_PATH "/dt/addr_auth", "type"}, {BOOT_PATH "/dt", "routing"}, {BOOT_PATH "/dt/routing", "type"}, /* RIB MGR COMPONENT */ {BOOT_PATH, "rm"}, {BOOT_PATH "/rm","gam"}, {BOOT_PATH "/rm/gam", "type"}, {BOOT_PATH "/rm/gam", "cacep"}, {NULL, NULL} }; int normal_rib_init(void) { struct ros * r; for (r = (struct ros *) ros; r->parent; ++r) { if (rib_add(r->parent, r->child)) { log_err("Failed to create %s/%s", r->parent, r->child); return -1; } } return 0; } static int normal_ipcp_bootstrap(const struct ipcp_config * conf) { uint32_t hash_algo; assert(conf); assert(conf->type == THIS_TYPE); hash_algo = hton32((uint32_t) conf->dif_info.dir_hash_algo); assert(ntoh32(hash_algo) != 0); if (normal_rib_init()) { log_err("Failed to write initial structure to the RIB."); return -1; } if (rib_write(BOOT_PATH "/general/dif_name", conf->dif_info.dif_name, strlen(conf->dif_info.dif_name) + 1) || rib_write(BOOT_PATH "/general/dir_hash_algo", &hash_algo, sizeof(hash_algo)) || rib_write(BOOT_PATH "/dt/const/addr_size", &conf->addr_size, sizeof(conf->addr_size)) || rib_write(BOOT_PATH "/dt/const/fd_size", &conf->fd_size, sizeof(conf->fd_size)) || rib_write(BOOT_PATH "/dt/const/has_ttl", &conf->has_ttl, sizeof(conf->has_ttl)) || rib_write(BOOT_PATH "/dt/gam/type", &conf->dt_gam_type, sizeof(conf->dt_gam_type)) || rib_write(BOOT_PATH "/rm/gam/type", &conf->rm_gam_type, sizeof(conf->rm_gam_type)) || rib_write(BOOT_PATH "/dt/addr_auth/type", &conf->addr_auth_type, sizeof(conf->addr_auth_type)) || rib_write(BOOT_PATH "/dt/routing/type", &conf->routing_type, sizeof(conf->routing_type))) { log_err("Failed to write boot info to RIB."); return -1; } if (boot_components()) { log_err("Failed to boot IPCP components."); return -1; } log_dbg("Bootstrapped in DIF %s.", conf->dif_info.dif_name); return 0; } static int normal_ipcp_query(const uint8_t * dst) { return dir_query(dst) ? 0 : -1; } static struct ipcp_ops normal_ops = { .ipcp_bootstrap = normal_ipcp_bootstrap, .ipcp_enroll = normal_ipcp_enroll, .ipcp_reg = dir_reg, .ipcp_unreg = dir_unreg, .ipcp_query = normal_ipcp_query, .ipcp_flow_alloc = fa_alloc, .ipcp_flow_alloc_resp = fa_alloc_resp, .ipcp_flow_dealloc = fa_dealloc }; int main(int argc, char * argv[]) { if (ipcp_init(argc, argv, THIS_TYPE, &normal_ops) < 0) { log_err("Failed to init IPCP."); goto fail_init; } if (irm_bind_api(getpid(), ipcpi.name)) { log_err("Failed to bind AP name."); goto fail_bind_api; } if (rib_init()) { log_err("Failed to initialize RIB."); goto fail_rib_init; } if (connmgr_init()) { log_err("Failed to initialize connection manager."); goto fail_connmgr_init; } if (enroll_init()) { log_err("Failed to initialize enroll component."); goto fail_enroll_init; } if (ipcp_boot() < 0) { log_err("Failed to boot IPCP."); goto fail_boot; } if (ipcp_create_r(getpid(), 0)) { log_err("Failed to notify IRMd we are initialized."); ipcp_set_state(IPCP_NULL); goto fail_create_r; } ipcp_shutdown(); if (ipcp_get_state() == IPCP_SHUTDOWN) shutdown_components(); enroll_fini(); connmgr_fini(); rib_fini(); irm_unbind_api(getpid(), ipcpi.name); ipcp_fini(); exit(EXIT_SUCCESS); fail_create_r: ipcp_shutdown(); fail_boot: enroll_fini(); fail_enroll_init: connmgr_fini(); fail_connmgr_init: rib_fini(); fail_rib_init: irm_unbind_api(getpid(), ipcpi.name); fail_bind_api: ipcp_fini(); fail_init: ipcp_create_r(getpid(), -1); exit(EXIT_FAILURE); }