/* * Ouroboros - Copyright (C) 2016 * * Normal IPC Process * * Sander Vrijders <sander.vrijders@intec.ugent.be> * * 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; either version 2 of the License, or * (at your option) any later version. * * 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. */ #define OUROBOROS_PREFIX "normal-ipcp" #include <ouroboros/config.h> #include <ouroboros/logs.h> #include <ouroboros/dev.h> #include <ouroboros/ipcp-dev.h> #include <ouroboros/time_utils.h> #include "fmgr.h" #include "ribmgr.h" #include "ipcp.h" #include "frct.h" #include <stdbool.h> #include <signal.h> #include <stdlib.h> #include <pthread.h> #include <string.h> #include <errno.h> #define THIS_TYPE IPCP_NORMAL /* global for trapping signal */ int irmd_api; void ipcp_sig_handler(int sig, siginfo_t * info, void * c) { (void) c; switch(sig) { case SIGINT: case SIGTERM: case SIGHUP: if (info->si_pid == irmd_api) { LOG_DBG("IPCP %d terminating by order of %d. Bye.", getpid(), info->si_pid); pthread_rwlock_wrlock(&ipcpi.state_lock); ipcp_set_state(IPCP_SHUTDOWN); pthread_rwlock_unlock(&ipcpi.state_lock); } default: return; } } static int normal_ipcp_name_reg(char * name) { pthread_rwlock_rdlock(&ipcpi.state_lock); if (ipcp_data_reg_add_entry(ipcpi.data, name)) { pthread_rwlock_unlock(&ipcpi.state_lock); LOG_ERR("Failed to add %s to local registry.", name); return -1; } pthread_rwlock_unlock(&ipcpi.state_lock); LOG_DBG("Registered %s.", name); return 0; } static int normal_ipcp_name_unreg(char * name) { pthread_rwlock_rdlock(&ipcpi.state_lock); ipcp_data_reg_del_entry(ipcpi.data, name); pthread_rwlock_unlock(&ipcpi.state_lock); return 0; } static int normal_ipcp_name_query(char * name) { LOG_MISSING; (void) name; /* * NOTE: For the moment we just return -1, * for testing purposes we may return zero here * for certain names. */ return -1; } static int normal_ipcp_enroll(char * dif_name) { struct timespec timeout = {(ENROLL_TIMEOUT / 1000), (ENROLL_TIMEOUT % 1000) * MILLION}; pthread_rwlock_rdlock(&ipcpi.state_lock); if (ipcp_get_state() != IPCP_INIT) { pthread_rwlock_unlock(&ipcpi.state_lock); LOG_ERR("Won't enroll an IPCP that is not in INIT."); return -1; /* -ENOTINIT */ } pthread_rwlock_unlock(&ipcpi.state_lock); if (fmgr_nm1_mgmt_flow(dif_name)) { LOG_ERR("Failed to establish management flow."); return -1; } if (ipcp_wait_state(IPCP_ENROLLED, &timeout) == -ETIMEDOUT) { LOG_ERR("Enrollment timed out."); return -1; } pthread_rwlock_rdlock(&ipcpi.state_lock); if (ipcp_get_state() != IPCP_ENROLLED) { pthread_rwlock_unlock(&ipcpi.state_lock); return -1; } pthread_rwlock_unlock(&ipcpi.state_lock); return 0; } static int normal_ipcp_bootstrap(struct dif_config * conf) { pthread_rwlock_wrlock(&ipcpi.state_lock); if (ipcp_get_state() != IPCP_INIT) { pthread_rwlock_unlock(&ipcpi.state_lock); LOG_ERR("Won't bootstrap an IPCP that is not in INIT."); return -1; /* -ENOTINIT */ } if (ribmgr_bootstrap(conf)) { pthread_rwlock_unlock(&ipcpi.state_lock); LOG_ERR("Failed to bootstrap RIB manager."); return -1; } ipcp_set_state(IPCP_ENROLLED); ipcpi.data->dif_name = conf->dif_name; pthread_rwlock_unlock(&ipcpi.state_lock); LOG_DBG("Bootstrapped in DIF %s.", conf->dif_name); return 0; } static struct ipcp_ops normal_ops = { .ipcp_bootstrap = normal_ipcp_bootstrap, .ipcp_enroll = normal_ipcp_enroll, .ipcp_name_reg = normal_ipcp_name_reg, .ipcp_name_unreg = normal_ipcp_name_unreg, .ipcp_name_query = normal_ipcp_name_query, .ipcp_flow_alloc = fmgr_np1_alloc, .ipcp_flow_alloc_resp = fmgr_np1_alloc_resp, .ipcp_flow_dealloc = fmgr_np1_dealloc }; int main(int argc, char * argv[]) { struct sigaction sig_act; sigset_t sigset; if (ap_init(argv[0])) { LOG_ERR("Failed to init AP"); exit(EXIT_FAILURE); } sigemptyset(&sigset); sigaddset(&sigset, SIGINT); sigaddset(&sigset, SIGQUIT); sigaddset(&sigset, SIGHUP); sigaddset(&sigset, SIGPIPE); if (ipcp_parse_arg(argc, argv)) { LOG_ERR("Failed to parse arguments."); exit(EXIT_FAILURE); } /* store the process id of the irmd */ irmd_api = atoi(argv[1]); /* init sig_act */ memset(&sig_act, 0, sizeof(sig_act)); /* install signal traps */ sig_act.sa_sigaction = &ipcp_sig_handler; sig_act.sa_flags = SA_SIGINFO; sigaction(SIGINT, &sig_act, NULL); sigaction(SIGTERM, &sig_act, NULL); sigaction(SIGHUP, &sig_act, NULL); sigaction(SIGPIPE, &sig_act, NULL); pthread_sigmask(SIG_BLOCK, &sigset, NULL); if (ipcp_init(THIS_TYPE, &normal_ops) < 0) { LOG_ERR("Failed to create instance."); close_logfile(); exit(EXIT_FAILURE); } pthread_sigmask(SIG_UNBLOCK, &sigset, NULL); if (fmgr_init()) { ipcp_fini(); close_logfile(); exit(EXIT_FAILURE); } if (ribmgr_init()) { fmgr_fini(); ipcp_fini(); close_logfile(); exit(EXIT_FAILURE); } if (ipcp_create_r(getpid())) { LOG_ERR("Failed to notify IRMd we are initialized."); fmgr_fini(); ipcp_fini(); close_logfile(); exit(EXIT_FAILURE); } ipcp_fini(); if (fmgr_fini()) LOG_ERR("Failed to finalize flow manager."); if (ribmgr_fini()) LOG_ERR("Failed to finalize RIB manager."); if (frct_fini()) LOG_ERR("Failed to finalize FRCT."); close_logfile(); ap_fini(); exit(EXIT_SUCCESS); }