+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2013 Tom Gundersen <teg@jklm.no>
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-
-#include "networkd.h"
-#include "networkd-link.h"
-
-#include "util.h"
-#include "conf-parser.h"
-
-int route_new_static(Network *network, unsigned section, Route **ret) {
- _cleanup_route_free_ Route *route = NULL;
-
- if (section) {
- route = hashmap_get(network->routes_by_section,
- UINT_TO_PTR(section));
- if (route) {
- *ret = route;
- route = NULL;
-
- return 0;
- }
- }
-
- route = new0(Route, 1);
- if (!route)
- return -ENOMEM;
-
- route->family = AF_UNSPEC;
- route->scope = RT_SCOPE_UNIVERSE;
- route->protocol = RTPROT_STATIC;
-
- route->network = network;
-
- LIST_PREPEND(routes, network->static_routes, route);
-
- if (section) {
- route->section = section;
- hashmap_put(network->routes_by_section,
- UINT_TO_PTR(route->section), route);
- }
-
- *ret = route;
- route = NULL;
-
- return 0;
-}
-
-int route_new_dynamic(Route **ret, unsigned char rtm_protocol) {
- _cleanup_route_free_ Route *route = NULL;
-
- route = new0(Route, 1);
- if (!route)
- return -ENOMEM;
-
- route->family = AF_UNSPEC;
- route->scope = RT_SCOPE_UNIVERSE;
- route->protocol = rtm_protocol;
-
- *ret = route;
- route = NULL;
-
- return 0;
-}
-
-void route_free(Route *route) {
- if (!route)
- return;
-
- if (route->network) {
- LIST_REMOVE(routes, route->network->static_routes, route);
-
- if (route->section)
- hashmap_remove(route->network->routes_by_section,
- UINT_TO_PTR(route->section));
- }
-
- free(route);
-}
-
-int route_drop(Route *route, Link *link,
- sd_rtnl_message_handler_t callback) {
- _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
- int r;
-
- assert(link);
- assert(link->manager);
- assert(link->manager->rtnl);
- assert(link->ifindex > 0);
- assert(route->family == AF_INET || route->family == AF_INET6);
-
- r = sd_rtnl_message_new_route(link->manager->rtnl, &req,
- RTM_DELROUTE, route->family,
- route->protocol);
- if (r < 0)
- return log_error_errno(r, "Could not create RTM_DELROUTE message: %m");
-
- if (!in_addr_is_null(route->family, &route->in_addr)) {
- if (route->family == AF_INET)
- r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
- else if (route->family == AF_INET6)
- r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m");
- }
-
- if (route->dst_prefixlen) {
- if (route->family == AF_INET)
- r = sd_rtnl_message_append_in_addr(req, RTA_DST, &route->dst_addr.in);
- else if (route->family == AF_INET6)
- r = sd_rtnl_message_append_in6_addr(req, RTA_DST, &route->dst_addr.in6);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_DST attribute: %m");
-
- r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen);
- if (r < 0)
- return log_error_errno(r, "Could not set destination prefix length: %m");
- }
-
- if (route->src_prefixlen) {
- if (route->family == AF_INET)
- r = sd_rtnl_message_append_in_addr(req, RTA_SRC, &route->src_addr.in);
- else if (route->family == AF_INET6)
- r = sd_rtnl_message_append_in6_addr(req, RTA_SRC, &route->src_addr.in6);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_DST attribute: %m");
-
- r = sd_rtnl_message_route_set_src_prefixlen(req, route->src_prefixlen);
- if (r < 0)
- return log_error_errno(r, "Could not set source prefix length: %m");
- }
-
- if (!in_addr_is_null(route->family, &route->prefsrc_addr)) {
- if (route->family == AF_INET)
- r = sd_rtnl_message_append_in_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in);
- else if (route->family == AF_INET6)
- r = sd_rtnl_message_append_in6_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in6);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_PREFSRC attribute: %m");
- }
-
- r = sd_rtnl_message_route_set_scope(req, route->scope);
- if (r < 0)
- return log_error_errno(r, "Could not set scope: %m");
-
- r = sd_rtnl_message_append_u32(req, RTA_PRIORITY, route->metrics);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_PRIORITY attribute: %m");
-
- r = sd_rtnl_message_append_u32(req, RTA_OIF, link->ifindex);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_OIF attribute: %m");
-
- r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
- if (r < 0)
- return log_error_errno(r, "Could not send rtnetlink message: %m");
-
- link_ref(link);
-
- return 0;
-}
-
-int route_configure(Route *route, Link *link,
- sd_rtnl_message_handler_t callback) {
- _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
- int r;
-
- assert(link);
- assert(link->manager);
- assert(link->manager->rtnl);
- assert(link->ifindex > 0);
- assert(route->family == AF_INET || route->family == AF_INET6);
-
- r = sd_rtnl_message_new_route(link->manager->rtnl, &req,
- RTM_NEWROUTE, route->family,
- route->protocol);
- if (r < 0)
- return log_error_errno(r, "Could not create RTM_NEWROUTE message: %m");
-
- if (!in_addr_is_null(route->family, &route->in_addr)) {
- if (route->family == AF_INET)
- r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
- else if (route->family == AF_INET6)
- r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m");
- }
-
- if (route->dst_prefixlen) {
- if (route->family == AF_INET)
- r = sd_rtnl_message_append_in_addr(req, RTA_DST, &route->dst_addr.in);
- else if (route->family == AF_INET6)
- r = sd_rtnl_message_append_in6_addr(req, RTA_DST, &route->dst_addr.in6);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_DST attribute: %m");
-
- r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen);
- if (r < 0)
- return log_error_errno(r, "Could not set destination prefix length: %m");
- }
-
- if (route->src_prefixlen) {
- if (route->family == AF_INET)
- r = sd_rtnl_message_append_in_addr(req, RTA_SRC, &route->src_addr.in);
- else if (route->family == AF_INET6)
- r = sd_rtnl_message_append_in6_addr(req, RTA_SRC, &route->src_addr.in6);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_SRC attribute: %m");
-
- r = sd_rtnl_message_route_set_src_prefixlen(req, route->src_prefixlen);
- if (r < 0)
- return log_error_errno(r, "Could not set source prefix length: %m");
- }
-
- if (!in_addr_is_null(route->family, &route->prefsrc_addr)) {
- if (route->family == AF_INET)
- r = sd_rtnl_message_append_in_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in);
- else if (route->family == AF_INET6)
- r = sd_rtnl_message_append_in6_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in6);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_PREFSRC attribute: %m");
- }
-
- r = sd_rtnl_message_route_set_scope(req, route->scope);
- if (r < 0)
- return log_error_errno(r, "Could not set scope: %m");
-
- r = sd_rtnl_message_append_u32(req, RTA_PRIORITY, route->metrics);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_PRIORITY attribute: %m");
-
- r = sd_rtnl_message_append_u32(req, RTA_OIF, link->ifindex);
- if (r < 0)
- return log_error_errno(r, "Could not append RTA_OIF attribute: %m");
-
- r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
- if (r < 0)
- return log_error_errno(r, "Could not send rtnetlink message: %m");
-
- link_ref(link);
-
- return 0;
-}
-
-int config_parse_gateway(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- Network *network = userdata;
- _cleanup_route_free_ Route *n = NULL;
- union in_addr_union buffer;
- int r, f;
-
- assert(filename);
- assert(section);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- if (streq(section, "Network")) {
- /* we are not in an Route section, so treat
- * this as the special '0' section */
- section_line = 0;
- }
-
- r = route_new_static(network, section_line, &n);
- if (r < 0)
- return r;
-
- r = in_addr_from_string_auto(rvalue, &f, &buffer);
- if (r < 0) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Route is invalid, ignoring assignment: %s", rvalue);
- return 0;
- }
-
- n->family = f;
- n->in_addr = buffer;
- n = NULL;
-
- return 0;
-}
-
-int config_parse_destination(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- Network *network = userdata;
- _cleanup_route_free_ Route *n = NULL;
- const char *address, *e;
- union in_addr_union buffer;
- unsigned char prefixlen;
- int r, f;
-
- assert(filename);
- assert(section);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- r = route_new_static(network, section_line, &n);
- if (r < 0)
- return r;
-
- /* Destination|Source=address/prefixlen */
-
- /* address */
- e = strchr(rvalue, '/');
- if (e)
- address = strndupa(rvalue, e - rvalue);
- else
- address = rvalue;
-
- r = in_addr_from_string_auto(address, &f, &buffer);
- if (r < 0) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Destination is invalid, ignoring assignment: %s", address);
- return 0;
- }
-
- if (f != AF_INET && f != AF_INET6) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Unknown address family, ignoring assignment: %s", address);
- return 0;
- }
-
- /* prefixlen */
- if (e) {
- r = safe_atou8(e + 1, &prefixlen);
- if (r < 0) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Route destination prefix length is invalid, ignoring assignment: %s", e + 1);
- return 0;
- }
- } else {
- switch (f) {
- case AF_INET:
- prefixlen = 32;
- break;
- case AF_INET6:
- prefixlen = 128;
- break;
- }
- }
-
- n->family = f;
- if (streq(lvalue, "Destination")) {
- n->dst_addr = buffer;
- n->dst_prefixlen = prefixlen;
- } else if (streq(lvalue, "Source")) {
- n->src_addr = buffer;
- n->src_prefixlen = prefixlen;
- } else
- assert_not_reached(lvalue);
-
- n = NULL;
-
- return 0;
-}
-
-int config_parse_route_priority(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
- Network *network = userdata;
- _cleanup_route_free_ Route *n = NULL;
- int r;
-
- assert(filename);
- assert(section);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- r = route_new_static(network, section_line, &n);
- if (r < 0)
- return r;
-
- r = config_parse_unsigned(unit, filename, line, section,
- section_line, lvalue, ltype,
- rvalue, &n->metrics, userdata);
- if (r < 0)
- return r;
-
- n = NULL;
-
- return 0;
-}
-
-int config_parse_route_scope(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
- Network *network = userdata;
- _cleanup_route_free_ Route *n = NULL;
- int r;
-
- assert(filename);
- assert(section);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- r = route_new_static(network, section_line, &n);
- if (r < 0)
- return r;
-
- if (streq(rvalue, "host"))
- n->scope = RT_SCOPE_HOST;
- else if (streq(rvalue, "link"))
- n->scope = RT_SCOPE_LINK;
- else if (streq(rvalue, "global"))
- n->scope = RT_SCOPE_UNIVERSE;
- else {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Unknown route scope: %s", rvalue);
- return 0;
- }
-
- n = NULL;
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff