From 809e4d1957daa701a3390b0526b125cc263bfe26 Mon Sep 17 00:00:00 2001 From: Dimitri Staessens Date: Fri, 26 Mar 2021 20:47:25 +0100 Subject: build: Move connmgr and enrolment to common ground The connection manager and enrolment components of the unicast and broadcast IPCP have a lot in common, as conjectured in the paper. The initial implementation of the broadcast IPCP just duplicated the code. This moves the shared functionality to common ground. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders --- src/ipcpd/unicast/enroll.c | 383 +-------------------------------------------- 1 file changed, 2 insertions(+), 381 deletions(-) (limited to 'src/ipcpd/unicast/enroll.c') diff --git a/src/ipcpd/unicast/enroll.c b/src/ipcpd/unicast/enroll.c index 3abe431e..500a3895 100644 --- a/src/ipcpd/unicast/enroll.c +++ b/src/ipcpd/unicast/enroll.c @@ -1,382 +1,3 @@ -/* - * Ouroboros - Copyright (C) 2016 - 2021 - * - * Enrollment Task - * - * Dimitri Staessens - * Sander Vrijders - * - * 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 BUILD_IPCP_UNICAST -#if defined(__linux__) || defined(__CYGWIN__) -#define _DEFAULT_SOURCE -#else -#define _POSIX_C_SOURCE 199309L -#endif - -#define OUROBOROS_PREFIX "enrollment" - -#include -#include -#include -#include -#include -#include -#include - -#include "connmgr.h" -#include "enroll.h" -#include "ipcp.h" - -#include -#include -#include -#include - -#include "ipcp_config.pb-c.h" -typedef EnrollMsg enroll_msg_t; - -#define ENROLL_COMP "Enrollment" -#define ENROLL_PROTO "OEP" /* Ouroboros enrollment protocol */ -#define ENROLL_WARN_TIME_OFFSET 20 -#define ENROLL_BUF_LEN 1024 - -enum enroll_state { - ENROLL_NULL = 0, - ENROLL_INIT, - ENROLL_RUNNING -}; - -struct { - struct ipcp_config conf; - enum enroll_state state; - pthread_t listener; -} enroll; - -static int send_rcv_enroll_msg(int fd) -{ - enroll_msg_t req = ENROLL_MSG__INIT; - enroll_msg_t * reply; - uint8_t buf[ENROLL_BUF_LEN]; - ssize_t len; - ssize_t delta_t; - struct timespec t0; - struct timespec rtt; - - req.code = ENROLL_CODE__ENROLL_REQ; - - len = enroll_msg__get_packed_size(&req); - if (len < 0) { - log_dbg("Failed pack request message."); - return -1; - } - - enroll_msg__pack(&req, buf); - - clock_gettime(CLOCK_REALTIME, &t0); - - if (flow_write(fd, buf, len) < 0) { - log_dbg("Failed to send request message."); - return -1; - } - - len = flow_read(fd, buf, ENROLL_BUF_LEN); - if (len < 0) { - log_dbg("No enrollment reply received."); - return -1; - } - - log_dbg("Received enrollment info (%zd bytes).", len); - - reply = enroll_msg__unpack(NULL, len, buf); - if (reply == NULL) { - log_dbg("No enrollment response."); - return -1; - } - - if (reply->code != ENROLL_CODE__ENROLL_BOOT) { - log_dbg("Failed to unpack enrollment response."); - enroll_msg__free_unpacked(reply, NULL); - return -1; - } - - if (!(reply->has_t_sec && reply->has_t_nsec)) { - log_dbg("No time in response message."); - enroll_msg__free_unpacked(reply, NULL); - return -1; - } - - clock_gettime(CLOCK_REALTIME, &rtt); - - delta_t = ts_diff_ms(&t0, &rtt); - - rtt.tv_sec = reply->t_sec; - rtt.tv_nsec = reply->t_nsec; - - if (labs(ts_diff_ms(&t0, &rtt)) - delta_t > ENROLL_WARN_TIME_OFFSET) - log_warn("Clock offset above threshold."); - - strcpy(enroll.conf.layer_info.layer_name, - reply->conf->layer_info->layer_name); - enroll.conf.type = reply->conf->ipcp_type; - enroll.conf.addr_size = reply->conf->addr_size; - enroll.conf.eid_size = reply->conf->eid_size; - enroll.conf.max_ttl = reply->conf->max_ttl; - enroll.conf.addr_auth_type = reply->conf->addr_auth_type; - enroll.conf.routing_type = reply->conf->routing_type; - enroll.conf.cong_avoid = reply->conf->cong_avoid; - enroll.conf.layer_info.dir_hash_algo - = reply->conf->layer_info->dir_hash_algo; - - enroll_msg__free_unpacked(reply, NULL); - - return 0; -} - -static ssize_t enroll_pack(uint8_t ** buf) -{ - enroll_msg_t msg = ENROLL_MSG__INIT; - ipcp_config_msg_t config = IPCP_CONFIG_MSG__INIT; - layer_info_msg_t layer_info = LAYER_INFO_MSG__INIT; - struct timespec now; - ssize_t len; - - clock_gettime(CLOCK_REALTIME, &now); - - msg.code = ENROLL_CODE__ENROLL_BOOT; - msg.has_t_sec = true; - msg.t_sec = now.tv_sec; - msg.has_t_nsec = true; - msg.t_nsec = now.tv_nsec; - msg.conf = &config; - - config.ipcp_type = enroll.conf.type; - config.has_addr_size = true; - config.addr_size = enroll.conf.addr_size; - config.has_eid_size = true; - config.eid_size = enroll.conf.eid_size; - config.has_max_ttl = true; - config.max_ttl = enroll.conf.max_ttl; - config.has_addr_auth_type = true; - config.addr_auth_type = enroll.conf.addr_auth_type; - config.has_routing_type = true; - config.routing_type = enroll.conf.routing_type; - config.has_cong_avoid = true; - config.cong_avoid = enroll.conf.cong_avoid; - config.layer_info = &layer_info; - - layer_info.layer_name = (char *) enroll.conf.layer_info.layer_name; - layer_info.dir_hash_algo = enroll.conf.layer_info.dir_hash_algo; - - len = enroll_msg__get_packed_size(&msg); - - *buf = malloc(len); - if (*buf == NULL) - return -1; - - enroll_msg__pack(&msg, *buf); - - return len; -} - -static void * enroll_handle(void * o) -{ - struct conn conn; - uint8_t buf[ENROLL_BUF_LEN]; - uint8_t * reply; - ssize_t len; - enroll_msg_t * msg; - - (void) o; - - while (true) { - if (connmgr_wait(COMPID_ENROLL, &conn)) { - log_err("Failed to get next connection."); - continue; - } - - len = flow_read(conn.flow_info.fd, buf, ENROLL_BUF_LEN); - if (len < 0) { - log_err("Failed to read from flow."); - connmgr_dealloc(COMPID_ENROLL, &conn); - continue; - } - - msg = enroll_msg__unpack(NULL, len, buf); - if (msg == NULL) { - log_err("Failed to unpack message."); - connmgr_dealloc(COMPID_ENROLL, &conn); - continue; - } - - if (msg->code != ENROLL_CODE__ENROLL_REQ) { - log_err("Wrong message type."); - connmgr_dealloc(COMPID_ENROLL, &conn); - enroll_msg__free_unpacked(msg, NULL); - continue; - } - - log_dbg("Enrolling a new neighbor."); - - enroll_msg__free_unpacked(msg, NULL); - - len = enroll_pack(&reply); - if (reply == NULL) { - log_err("Failed to pack enrollment message."); - connmgr_dealloc(COMPID_ENROLL, &conn); - continue; - } - - log_dbg("Sending enrollment info (%zd bytes).", len); - - if (flow_write(conn.flow_info.fd, reply, len) < 0) { - log_err("Failed respond to enrollment request."); - connmgr_dealloc(COMPID_ENROLL, &conn); - free(reply); - continue; - } - - free(reply); - - len = flow_read(conn.flow_info.fd, buf, ENROLL_BUF_LEN); - if (len < 0) { - log_err("Failed to read from flow."); - connmgr_dealloc(COMPID_ENROLL, &conn); - continue; - } - - msg = enroll_msg__unpack(NULL, len, buf); - if (msg == NULL) { - log_err("Failed to unpack message."); - connmgr_dealloc(COMPID_ENROLL, &conn); - continue; - } - - if (msg->code != ENROLL_CODE__ENROLL_DONE || !msg->has_result) { - log_err("Wrong message type."); - enroll_msg__free_unpacked(msg, NULL); - connmgr_dealloc(COMPID_ENROLL, &conn); - continue; - } - - if (msg->result == 0) - log_dbg("Neighbor enrollment successful."); - else - log_dbg("Neigbor reported failed enrollment."); - - enroll_msg__free_unpacked(msg, NULL); - - connmgr_dealloc(COMPID_ENROLL, &conn); - } - - return 0; -} - -int enroll_boot(struct conn * conn) -{ - log_dbg("Getting boot information."); - - if (send_rcv_enroll_msg(conn->flow_info.fd)) { - log_err("Failed to enroll."); - return -1; - } - - return 0; -} - -int enroll_done(struct conn * conn, - int result) -{ - enroll_msg_t msg = ENROLL_MSG__INIT; - uint8_t buf[ENROLL_BUF_LEN]; - ssize_t len; - - msg.code = ENROLL_CODE__ENROLL_DONE; - msg.has_result = true; - msg.result = result; - - len = enroll_msg__get_packed_size(&msg); - if (len < 0) { - log_dbg("Failed pack request message."); - return -1; - } - - enroll_msg__pack(&msg, buf); - - if (flow_write(conn->flow_info.fd, buf, len) < 0) { - log_dbg("Failed to send acknowledgment."); - return -1; - } - - return 0; -} - -void enroll_bootstrap(const struct ipcp_config * conf) -{ - assert(conf); - - memcpy(&enroll.conf, conf, sizeof(enroll.conf)); -} - -struct ipcp_config * enroll_get_conf(void) -{ - return &enroll.conf; -} - -int enroll_init(void) -{ - struct conn_info info; - - memset(&info, 0, sizeof(info)); - - strcpy(info.comp_name, ENROLL_COMP); - strcpy(info.protocol, ENROLL_PROTO); - info.pref_version = 1; - info.pref_syntax = PROTO_GPB; - info.addr = 0; - - if (connmgr_comp_init(COMPID_ENROLL, &info)) { - log_err("Failed to register with connmgr."); - return -1; - } - - enroll.state = ENROLL_INIT; - - return 0; -} - -void enroll_fini(void) -{ - if (enroll.state == ENROLL_RUNNING) - pthread_join(enroll.listener, NULL); - - connmgr_comp_fini(COMPID_ENROLL); -} - -int enroll_start(void) -{ - if (pthread_create(&enroll.listener, NULL, enroll_handle, NULL)) - return -1; - - enroll.state = ENROLL_RUNNING; - - return 0; -} - -void enroll_stop(void) -{ - if (enroll.state == ENROLL_RUNNING) - pthread_cancel(enroll.listener); -} +#include "common/enroll.c" -- cgit v1.2.3