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-rw-r--r--src/ipcpd/common/comp.h46
-rw-r--r--src/ipcpd/common/connmgr.c518
-rw-r--r--src/ipcpd/common/connmgr.h74
-rw-r--r--src/ipcpd/common/enroll.c385
-rw-r--r--src/ipcpd/common/enroll.h47
5 files changed, 1070 insertions, 0 deletions
diff --git a/src/ipcpd/common/comp.h b/src/ipcpd/common/comp.h
new file mode 100644
index 00000000..95e59b24
--- /dev/null
+++ b/src/ipcpd/common/comp.h
@@ -0,0 +1,46 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2021
+ *
+ * Components for the unicast/broadcast IPC process
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * 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/.
+ */
+
+#ifndef OUROBOROS_IPCPD_COMMON_COMP_H
+#define OUROBOROS_IPCPD_COMMON_COMP_H
+
+#include <ouroboros/cacep.h>
+
+#define DST_MAX_STRLEN 64
+
+enum comp_id {
+ COMPID_DT = 0,
+ COMPID_ENROLL,
+ COMPID_MGMT,
+ COMPID_MAX
+};
+
+struct conn {
+ struct conn_info conn_info;
+ struct {
+ char dst[DST_MAX_STRLEN + 1];
+ int fd;
+ qosspec_t qs;
+ } flow_info;
+};
+
+#endif /* OUROBOROS_IPCPD_COMMON_COMP_H */
diff --git a/src/ipcpd/common/connmgr.c b/src/ipcpd/common/connmgr.c
new file mode 100644
index 00000000..9002467c
--- /dev/null
+++ b/src/ipcpd/common/connmgr.c
@@ -0,0 +1,518 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2021
+ *
+ * Handles connections between components
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * 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 OUROBOROS_PREFIX "connection-manager"
+
+#include <ouroboros/dev.h>
+#include <ouroboros/cacep.h>
+#include <ouroboros/errno.h>
+#include <ouroboros/list.h>
+#include <ouroboros/logs.h>
+#include <ouroboros/notifier.h>
+
+#include "connmgr.h"
+#include "ipcp.h"
+
+#include <pthread.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+
+enum connmgr_state {
+ CONNMGR_NULL = 0,
+ CONNMGR_INIT,
+ CONNMGR_RUNNING
+};
+
+struct conn_el {
+ struct list_head next;
+ struct conn conn;
+};
+
+struct comp {
+ struct conn_info info;
+
+ struct list_head conns;
+ struct list_head pending;
+
+ pthread_cond_t cond;
+ pthread_mutex_t lock;
+};
+
+struct {
+ struct comp comps[COMPID_MAX];
+ enum connmgr_state state;
+
+ pthread_t acceptor;
+} connmgr;
+
+static int get_id_by_name(const char * name)
+{
+ enum comp_id i;
+
+ for (i = 0; i < COMPID_MAX; ++i)
+ if (strcmp(name, connmgr.comps[i].info.comp_name) == 0)
+ return i;
+
+ return -1;
+}
+
+static int get_conn_by_fd(int fd,
+ enum comp_id id,
+ struct conn * conn)
+{
+ struct list_head * p;
+
+ pthread_mutex_lock(&connmgr.comps[id].lock);
+
+ list_for_each(p, &connmgr.comps[id].conns) {
+ struct conn_el * c =
+ list_entry(p, struct conn_el, next);
+ if (c->conn.flow_info.fd == fd) {
+ *conn = c->conn;
+ pthread_mutex_unlock(&connmgr.comps[id].lock);
+ return 0;
+ }
+ }
+
+ pthread_mutex_unlock(&connmgr.comps[id].lock);
+
+ return -1;
+}
+
+static int add_comp_conn(enum comp_id id,
+ int fd,
+ qosspec_t qs,
+ struct conn_info * rcv_info)
+{
+ struct conn_el * el;
+
+ el = malloc(sizeof(*el));
+ if (el == NULL) {
+ log_err("Not enough memory.");
+ return -1;
+ }
+
+ el->conn.conn_info = *rcv_info;
+ el->conn.flow_info.fd = fd;
+ el->conn.flow_info.qs = qs;
+
+ pthread_mutex_lock(&connmgr.comps[id].lock);
+
+ list_add(&el->next, &connmgr.comps[id].pending);
+ pthread_cond_signal(&connmgr.comps[id].cond);
+
+ pthread_mutex_unlock(&connmgr.comps[id].lock);
+
+ return 0;
+}
+
+static void * flow_acceptor(void * o)
+{
+ int fd;
+ qosspec_t qs;
+ struct conn_info rcv_info;
+ struct conn_info fail_info;
+
+ (void) o;
+
+ memset(&fail_info, 0, sizeof(fail_info));
+
+ while (true) {
+ int id;
+
+ fd = flow_accept(&qs, NULL);
+ if (fd < 0) {
+ if (fd != -EIRMD)
+ log_warn("Flow accept failed: %d", fd);
+ continue;
+ }
+
+ if (cacep_rcv(fd, &rcv_info)) {
+ log_dbg("Error establishing application connection.");
+ flow_dealloc(fd);
+ continue;
+ }
+
+ id = get_id_by_name(rcv_info.comp_name);
+ if (id < 0) {
+ log_dbg("Connection request for unknown component %s.",
+ rcv_info.comp_name);
+ cacep_snd(fd, &fail_info);
+ flow_dealloc(fd);
+ continue;
+ }
+
+ assert(id < COMPID_MAX);
+
+ if (cacep_snd(fd, &connmgr.comps[id].info)) {
+ log_dbg("Failed to respond to request.");
+ flow_dealloc(fd);
+ continue;
+ }
+
+ if (add_comp_conn(id, fd, qs, &rcv_info)) {
+ log_dbg("Failed to add new connection.");
+ flow_dealloc(fd);
+ continue;
+ }
+ }
+
+ return (void *) 0;
+}
+
+static void handle_event(void * self,
+ int event,
+ const void * o)
+{
+ struct conn conn;
+
+ (void) self;
+
+ if (!(event == NOTIFY_DT_FLOW_UP ||
+ event == NOTIFY_DT_FLOW_DOWN ||
+ event == NOTIFY_DT_FLOW_DEALLOC))
+ return;
+
+ if (get_conn_by_fd(*((int *) o), COMPID_DT, &conn))
+ return;
+
+ switch (event) {
+ case NOTIFY_DT_FLOW_UP:
+ notifier_event(NOTIFY_DT_CONN_UP, &conn);
+ break;
+ case NOTIFY_DT_FLOW_DOWN:
+ notifier_event(NOTIFY_DT_CONN_DOWN, &conn);
+ break;
+ case NOTIFY_DT_FLOW_DEALLOC:
+ notifier_event(NOTIFY_DT_CONN_DEL, &conn);
+ break;
+ default:
+ break;
+ }
+}
+
+int connmgr_init(void)
+{
+ connmgr.state = CONNMGR_INIT;
+
+ if (notifier_reg(handle_event, NULL))
+ return -1;
+
+ return 0;
+}
+
+void connmgr_fini(void)
+{
+ int i;
+
+ notifier_unreg(handle_event);
+
+ if (connmgr.state == CONNMGR_RUNNING)
+ pthread_join(connmgr.acceptor, NULL);
+
+ for (i = 0; i < COMPID_MAX; ++i)
+ connmgr_comp_fini(i);
+}
+
+int connmgr_start(void)
+{
+ if (pthread_create(&connmgr.acceptor, NULL, flow_acceptor, NULL))
+ return -1;
+
+ connmgr.state = CONNMGR_RUNNING;
+
+ return 0;
+}
+
+void connmgr_stop(void)
+{
+ if (connmgr.state == CONNMGR_RUNNING)
+ pthread_cancel(connmgr.acceptor);
+}
+
+int connmgr_comp_init(enum comp_id id,
+ const struct conn_info * info)
+{
+ struct comp * comp;
+
+ assert(id >= 0 && id < COMPID_MAX);
+
+ comp = connmgr.comps + id;
+
+ if (pthread_mutex_init(&comp->lock, NULL))
+ return -1;
+
+ if (pthread_cond_init(&comp->cond, NULL)) {
+ pthread_mutex_destroy(&comp->lock);
+ return -1;
+ }
+
+ list_head_init(&comp->conns);
+ list_head_init(&comp->pending);
+
+ memcpy(&connmgr.comps[id].info, info, sizeof(connmgr.comps[id].info));
+
+ return 0;
+}
+
+void connmgr_comp_fini(enum comp_id id)
+{
+ struct list_head * p;
+ struct list_head * h;
+ struct comp * comp;
+
+ assert(id >= 0 && id < COMPID_MAX);
+
+ if (strlen(connmgr.comps[id].info.comp_name) == 0)
+ return;
+
+ comp = connmgr.comps + id;
+
+ pthread_mutex_lock(&comp->lock);
+
+ list_for_each_safe(p, h, &comp->conns) {
+ struct conn_el * e = list_entry(p, struct conn_el, next);
+ list_del(&e->next);
+ free(e);
+ }
+
+ list_for_each_safe(p, h, &comp->pending) {
+ struct conn_el * e = list_entry(p, struct conn_el, next);
+ list_del(&e->next);
+ free(e);
+ }
+
+ pthread_mutex_unlock(&comp->lock);
+
+ pthread_cond_destroy(&comp->cond);
+ pthread_mutex_destroy(&comp->lock);
+
+ memset(&connmgr.comps[id].info, 0, sizeof(connmgr.comps[id].info));
+}
+
+int connmgr_ipcp_connect(const char * dst,
+ const char * component,
+ qosspec_t qs)
+{
+ struct conn_el * ce;
+ int id;
+
+ assert(dst);
+ assert(component);
+
+ ce = malloc(sizeof(*ce));
+ if (ce == NULL) {
+ log_dbg("Out of memory.");
+ return -1;
+ }
+
+ id = get_id_by_name(component);
+ if (id < 0) {
+ log_dbg("No such component: %s", component);
+ free(ce);
+ return -1;
+ }
+
+ if (connmgr_alloc(id, dst, &qs, &ce->conn)) {
+ free(ce);
+ return -1;
+ }
+
+ if (strlen(dst) > DST_MAX_STRLEN) {
+ log_warn("Truncating dst length for connection.");
+ memcpy(ce->conn.flow_info.dst, dst, DST_MAX_STRLEN);
+ ce->conn.flow_info.dst[DST_MAX_STRLEN] = '\0';
+ } else {
+ strcpy(ce->conn.flow_info.dst, dst);
+ }
+
+ pthread_mutex_lock(&connmgr.comps[id].lock);
+
+ list_add(&ce->next, &connmgr.comps[id].conns);
+
+ pthread_mutex_unlock(&connmgr.comps[id].lock);
+
+ return 0;
+}
+
+int connmgr_ipcp_disconnect(const char * dst,
+ const char * component)
+{
+ struct list_head * p;
+ struct list_head * h;
+ int id;
+
+ assert(dst);
+ assert(component);
+
+ id = get_id_by_name(component);
+ if (id < 0)
+ return -1;
+
+ pthread_mutex_lock(&connmgr.comps[id].lock);
+
+ list_for_each_safe(p,h, &connmgr.comps[id].conns) {
+ struct conn_el * el = list_entry(p, struct conn_el, next);
+ if (strcmp(el->conn.flow_info.dst, dst) == 0) {
+ int ret;
+ pthread_mutex_unlock(&connmgr.comps[id].lock);
+ list_del(&el->next);
+ ret = connmgr_dealloc(id, &el->conn);
+ free(el);
+ return ret;
+ }
+ }
+
+ pthread_mutex_unlock(&connmgr.comps[id].lock);
+
+ return 0;
+}
+
+int connmgr_alloc(enum comp_id id,
+ const char * dst,
+ qosspec_t * qs,
+ struct conn * conn)
+{
+ assert(id >= 0 && id < COMPID_MAX);
+ assert(dst);
+
+ conn->flow_info.fd = flow_alloc(dst, qs, NULL);
+ if (conn->flow_info.fd < 0) {
+ log_dbg("Failed to allocate flow to %s.", dst);
+ return -1;
+ }
+
+ if (qs != NULL)
+ conn->flow_info.qs = *qs;
+ else
+ memset(&conn->flow_info.qs, 0, sizeof(conn->flow_info.qs));
+
+ log_dbg("Sending cacep info for protocol %s to fd %d.",
+ connmgr.comps[id].info.protocol, conn->flow_info.fd);
+
+ if (cacep_snd(conn->flow_info.fd, &connmgr.comps[id].info)) {
+ log_dbg("Failed to create application connection.");
+ flow_dealloc(conn->flow_info.fd);
+ return -1;
+ }
+
+ if (cacep_rcv(conn->flow_info.fd, &conn->conn_info)) {
+ log_dbg("Failed to connect to application.");
+ flow_dealloc(conn->flow_info.fd);
+ return -1;
+ }
+
+ if (strcmp(connmgr.comps[id].info.protocol, conn->conn_info.protocol)) {
+ log_dbg("Unknown protocol (requested %s, got %s).",
+ connmgr.comps[id].info.protocol,
+ conn->conn_info.protocol);
+ flow_dealloc(conn->flow_info.fd);
+ return -1;
+ }
+
+ if (connmgr.comps[id].info.pref_version !=
+ conn->conn_info.pref_version) {
+ log_dbg("Unknown protocol version.");
+ flow_dealloc(conn->flow_info.fd);
+ return -1;
+ }
+
+ if (connmgr.comps[id].info.pref_syntax != conn->conn_info.pref_syntax) {
+ log_dbg("Unknown protocol syntax.");
+ flow_dealloc(conn->flow_info.fd);
+ return -1;
+ }
+
+ switch (id) {
+ case COMPID_DT:
+ notifier_event(NOTIFY_DT_CONN_ADD, conn);
+#if defined(BUILD_IPCP_UNICAST) && defined(IPCP_CONN_WAIT_DIR)
+ dir_wait_running();
+#endif
+ break;
+ case COMPID_MGMT:
+ notifier_event(NOTIFY_MGMT_CONN_ADD, conn);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+int connmgr_dealloc(enum comp_id id,
+ struct conn * conn)
+{
+ switch (id) {
+ case COMPID_DT:
+ notifier_event(NOTIFY_DT_CONN_DEL, conn);
+ break;
+#if defined(BUILD_IPCP_UNICAST) && defined(IPCP_CONN_WAIT_DIR)
+ case COMPID_MGMT:
+ notifier_event(NOTIFY_MGMT_CONN_DEL, conn);
+ break;
+#endif
+ default:
+ break;
+ }
+
+ return flow_dealloc(conn->flow_info.fd);
+}
+
+
+int connmgr_wait(enum comp_id id,
+ struct conn * conn)
+{
+ struct conn_el * el;
+ struct comp * comp;
+
+ assert(id >= 0 && id < COMPID_MAX);
+ assert(conn);
+
+ comp = connmgr.comps + id;
+
+ pthread_mutex_lock(&comp->lock);
+
+ pthread_cleanup_push((void(*)(void *))pthread_mutex_unlock,
+ (void *) &comp->lock);
+
+ while (list_is_empty(&comp->pending))
+ pthread_cond_wait(&comp->cond, &comp->lock);
+
+ pthread_cleanup_pop(false);
+
+ el = list_first_entry((&comp->pending), struct conn_el, next);
+ if (el == NULL) {
+ pthread_mutex_unlock(&comp->lock);
+ return -1;
+ }
+
+ *conn = el->conn;
+
+ list_del(&el->next);
+ list_add(&el->next, &connmgr.comps[id].conns);
+
+ pthread_mutex_unlock(&comp->lock);
+
+ return 0;
+}
diff --git a/src/ipcpd/common/connmgr.h b/src/ipcpd/common/connmgr.h
new file mode 100644
index 00000000..5f7b557f
--- /dev/null
+++ b/src/ipcpd/common/connmgr.h
@@ -0,0 +1,74 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2021
+ *
+ * Handles the different AP connections
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * 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/.
+ */
+
+#ifndef OUROBOROS_IPCPD_COMMON_CONNMGR_H
+#define OUROBOROS_IPCPD_COMMON_CONNMGR_H
+
+#include <ouroboros/cacep.h>
+#include <ouroboros/qos.h>
+
+#include "comp.h"
+
+#define NOTIFY_DT_CONN_ADD 0x00D0
+#define NOTIFY_DT_CONN_DEL 0x00D1
+#define NOTIFY_DT_CONN_QOS 0x00D2
+#define NOTIFY_DT_CONN_UP 0x00D3
+#define NOTIFY_DT_CONN_DOWN 0x00D4
+#define NOTIFY_DT_FLOW_UP 0x00D5
+#define NOTIFY_DT_FLOW_DOWN 0x00D6
+#define NOTIFY_DT_FLOW_DEALLOC 0x00D7
+
+#define NOTIFY_MGMT_CONN_ADD 0x00F0
+#define NOTIFY_MGMT_CONN_DEL 0x00F1
+
+int connmgr_init(void);
+
+void connmgr_fini(void);
+
+int connmgr_start(void);
+
+void connmgr_stop(void);
+
+int connmgr_comp_init(enum comp_id id,
+ const struct conn_info * info);
+
+void connmgr_comp_fini(enum comp_id id);
+
+int connmgr_ipcp_connect(const char * dst,
+ const char * component,
+ qosspec_t qs);
+
+int connmgr_ipcp_disconnect(const char * dst,
+ const char * component);
+
+int connmgr_alloc(enum comp_id id,
+ const char * dst,
+ qosspec_t * qs,
+ struct conn * conn);
+
+int connmgr_dealloc(enum comp_id id,
+ struct conn * conn);
+
+int connmgr_wait(enum comp_id id,
+ struct conn * conn);
+
+#endif /* OUROBOROS_IPCPD_COMMON_CONNMGR_H */
diff --git a/src/ipcpd/common/enroll.c b/src/ipcpd/common/enroll.c
new file mode 100644
index 00000000..090067d8
--- /dev/null
+++ b/src/ipcpd/common/enroll.c
@@ -0,0 +1,385 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2021
+ *
+ * Enrollment Task
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * 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/.
+ */
+
+#if defined(__linux__) || defined(__CYGWIN__)
+#define _DEFAULT_SOURCE
+#else
+#define _POSIX_C_SOURCE 199309L
+#endif
+
+#define OUROBOROS_PREFIX "enrollment"
+
+#include <ouroboros/endian.h>
+#include <ouroboros/errno.h>
+#include <ouroboros/time_utils.h>
+#include <ouroboros/dev.h>
+#include <ouroboros/logs.h>
+#include <ouroboros/errno.h>
+#include <ouroboros/sockets.h>
+
+#include "common/connmgr.h"
+#include "common/enroll.h"
+#include "ipcp.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+
+#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;
+#ifdef BUILD_IPCP_UNICAST
+ 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;
+#endif
+ 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;
+#ifdef BUILD_IPCP_UNICAST
+ 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;
+#endif
+ 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);
+}
diff --git a/src/ipcpd/common/enroll.h b/src/ipcpd/common/enroll.h
new file mode 100644
index 00000000..fb866416
--- /dev/null
+++ b/src/ipcpd/common/enroll.h
@@ -0,0 +1,47 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2021
+ *
+ * Enrollment Task
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * 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/.
+ */
+
+#ifndef OUROBOROS_IPCPD_COMMON_ENROLL_H
+#define OUROBOROS_IPCPD_COMMON_ENROLL_H
+
+#include <ouroboros/ipcp.h>
+
+#include "comp.h"
+
+int enroll_init(void);
+
+void enroll_fini(void);
+
+int enroll_start(void);
+
+void enroll_stop(void);
+
+void enroll_bootstrap(const struct ipcp_config * conf);
+
+int enroll_boot(struct conn * conn);
+
+int enroll_done(struct conn * conn,
+ int result);
+
+struct ipcp_config * enroll_get_conf(void);
+
+#endif /* OUROBOROS_IPCPD_COMMON_ENROLL_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 16:18:29 +0000