2013-10-17 03:18:36 +02:00
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <net/if.h>
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#include "networkd.h"
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#include "utf8.h"
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#include "util.h"
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#include "conf-parser.h"
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#include "net-util.h"
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2013-11-19 16:54:42 +01:00
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int route_new(Network *network, unsigned section, Route **ret) {
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2013-10-17 03:18:36 +02:00
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_cleanup_route_free_ Route *route = NULL;
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2013-11-19 16:54:42 +01:00
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if (section) {
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uint64_t key = section;
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route = hashmap_get(network->routes_by_section, &key);
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if (route) {
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*ret = route;
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route = NULL;
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return 0;
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}
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}
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2013-10-17 03:18:36 +02:00
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route = new0(Route, 1);
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if (!route)
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return -ENOMEM;
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route->network = network;
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LIST_PREPEND(routes, network->routes, route);
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2013-11-19 16:54:42 +01:00
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if (section) {
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route->section = section;
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hashmap_put(network->routes_by_section, &route->section, route);
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}
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2013-10-17 03:18:36 +02:00
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*ret = route;
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route = NULL;
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return 0;
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}
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void route_free(Route *route) {
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if (!route)
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return;
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LIST_REMOVE(routes, route->network->routes, route);
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2013-11-19 16:54:42 +01:00
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if (route->section)
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hashmap_remove(route->network->routes_by_section,
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&route->section);
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2013-10-17 03:18:36 +02:00
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free(route);
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}
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2013-11-14 16:22:51 +01:00
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int route_configure(Route *route, Link *link,
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sd_rtnl_message_handler_t callback) {
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2013-10-17 03:18:36 +02:00
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_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
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int r;
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assert(link);
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2013-11-14 16:22:51 +01:00
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assert(link->manager);
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assert(link->manager->rtnl);
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2013-10-17 03:18:36 +02:00
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assert(link->ifindex > 0);
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assert(route->family == AF_INET || route->family == AF_INET6);
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2013-11-19 16:54:42 +01:00
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r = sd_rtnl_message_route_new(RTM_NEWROUTE, route->family, route->dst_prefixlen,
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0, 0, RT_TABLE_MAIN, RT_SCOPE_UNIVERSE,
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RTPROT_BOOT, RTN_UNICAST, 0, &req);
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2013-10-17 03:18:36 +02:00
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if (r < 0) {
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log_error("Could not create RTM_NEWROUTE message: %s", strerror(-r));
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return r;
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}
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r = sd_rtnl_message_append(req, RTA_GATEWAY, &route->in_addr);
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if (r < 0) {
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log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
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return r;
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}
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2013-11-19 16:54:42 +01:00
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r = sd_rtnl_message_append(req, RTA_DST, &route->dst_addr);
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if (r < 0) {
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log_error("Could not append RTA_DST attribute: %s", strerror(-r));
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return r;
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}
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2013-10-17 03:18:36 +02:00
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r = sd_rtnl_message_append(req, RTA_OIF, &link->ifindex);
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if (r < 0) {
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log_error("Could not append RTA_OIF attribute: %s", strerror(-r));
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return r;
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}
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2013-11-14 16:22:51 +01:00
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r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
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2013-10-17 03:18:36 +02:00
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if (r < 0) {
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2013-11-14 16:22:51 +01:00
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log_error("Could not send rtnetlink message: %s", strerror(-r));
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2013-10-17 03:18:36 +02:00
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return r;
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}
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return 0;
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}
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int config_parse_gateway(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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2013-11-19 16:17:55 +01:00
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unsigned section_line,
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2013-10-17 03:18:36 +02:00
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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2013-11-19 16:54:42 +01:00
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Network *network = userdata;
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2013-10-17 03:18:36 +02:00
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_cleanup_route_free_ Route *n = NULL;
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_cleanup_free_ char *route = NULL;
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int r;
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assert(filename);
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2013-11-19 16:54:42 +01:00
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assert(section);
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2013-10-17 03:18:36 +02:00
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assert(lvalue);
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assert(rvalue);
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assert(data);
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2013-11-19 16:54:42 +01:00
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r = route_new(network, section_line, &n);
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2013-10-17 03:18:36 +02:00
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if (r < 0)
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return r;
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r = net_parse_inaddr(rvalue, &n->family, &n->in_addr);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, EINVAL,
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"Route is invalid, ignoring assignment: %s", route);
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return 0;
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}
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n = NULL;
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return 0;
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}
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2013-11-19 16:54:42 +01:00
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int config_parse_destination(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = userdata;
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_cleanup_route_free_ Route *n = NULL;
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_cleanup_free_ char *address = NULL;
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const char *e;
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int r;
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assert(filename);
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assert(section);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = route_new(network, section_line, &n);
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if (r < 0)
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return r;
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/* Destination=address/prefixlen */
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/* prefixlen */
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e = strchr(rvalue, '/');
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if (e) {
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unsigned i;
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r = safe_atou(e + 1, &i);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, EINVAL,
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"Route destination prefix length is invalid, "
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"ignoring assignment: %s", e + 1);
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return 0;
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}
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n->dst_prefixlen = (unsigned char) i;
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address = strndup(rvalue, e - rvalue);
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if (!address)
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return log_oom();
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} else {
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address = strdup(rvalue);
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if (!address)
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return log_oom();
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}
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r = net_parse_inaddr(address, &n->family, &n->dst_addr);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, EINVAL,
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"Destination is invalid, ignoring assignment: %s", address);
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return 0;
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}
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n = NULL;
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return 0;
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}
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