int route_new_static(Network *network, unsigned section, Route **ret) {
_cleanup_route_free_ Route *route = NULL;
int r;
if (section) {
route = hashmap_get(network->routes_by_section,
UINT_TO_PTR(section));
if (route) {
*ret = route;
route = NULL;
return 0;
}
}
r = route_new(&route);
if (r < 0)
return r;
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;
}
static void ndisc_router_process_default(Link *link, sd_ndisc_router *rt) {
_cleanup_route_free_ Route *route = NULL;
struct in6_addr gateway;
uint16_t lifetime;
unsigned preference;
usec_t time_now;
int r;
assert(link);
assert(rt);
r = sd_ndisc_router_get_lifetime(rt, &lifetime);
if (r < 0) {
log_link_warning_errno(link, r, "Failed to get gateway address from RA: %m");
return;
}
if (lifetime == 0) /* not a default router */
return;
r = sd_ndisc_router_get_address(rt, &gateway);
if (r < 0) {
log_link_warning_errno(link, r, "Failed to get gateway address from RA: %m");
return;
}
r = sd_ndisc_router_get_preference(rt, &preference);
if (r < 0) {
log_link_warning_errno(link, r, "Failed to get default router preference from RA: %m");
return;
}
r = sd_ndisc_router_get_timestamp(rt, clock_boottime_or_monotonic(), &time_now);
if (r < 0) {
log_link_warning_errno(link, r, "Failed to get RA timestamp: %m");
return;
}
r = route_new(&route);
if (r < 0) {
log_link_error_errno(link, r, "Could not allocate route: %m");
return;
}
route->family = AF_INET6;
route->table = RT_TABLE_MAIN;
route->protocol = RTPROT_RA;
route->pref = preference;
route->gw.in6 = gateway;
route->lifetime = time_now + lifetime * USEC_PER_SEC;
r = route_configure(route, link, ndisc_netlink_handler);
if (r < 0) {
log_link_warning_errno(link, r, "Could not set default route: %m");
link_enter_failed(link);
return;
}
link->ndisc_messages++;
}
static void ndisc_router_process_onlink_prefix(Link *link, sd_ndisc_router *rt) {
_cleanup_route_free_ Route *route = NULL;
usec_t time_now;
uint32_t lifetime;
unsigned prefixlen;
int r;
assert(link);
assert(rt);
r = sd_ndisc_router_get_timestamp(rt, clock_boottime_or_monotonic(), &time_now);
if (r < 0) {
log_link_warning_errno(link, r, "Failed to get RA timestamp: %m");
return;
}
r = sd_ndisc_router_prefix_get_prefixlen(rt, &prefixlen);
if (r < 0) {
log_link_error_errno(link, r, "Failed to get prefix length: %m");
return;
}
r = sd_ndisc_router_prefix_get_valid_lifetime(rt, &lifetime);
if (r < 0) {
log_link_error_errno(link, r, "Failed to get prefix lifetime: %m");
return;
}
r = route_new(&route);
if (r < 0) {
log_link_error_errno(link, r, "Could not allocate route: %m");
return;
}
route->family = AF_INET6;
route->table = RT_TABLE_MAIN;
route->protocol = RTPROT_RA;
route->flags = RTM_F_PREFIX;
route->dst_prefixlen = prefixlen;
route->lifetime = time_now + lifetime * USEC_PER_SEC;
r = sd_ndisc_router_prefix_get_address(rt, &route->dst.in6);
if (r < 0) {
log_link_error_errno(link, r, "Failed to get prefix address: %m");
return;
}
r = route_configure(route, link, ndisc_netlink_handler);
if (r < 0) {
log_link_warning_errno(link, r, "Could not set prefix route: %m");
link_enter_failed(link);
return;
}
link->ndisc_messages++;
}
static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) {
_cleanup_address_free_ Address *ll_addr = NULL;
_cleanup_route_free_ Route *route = NULL;
struct in_addr address;
int r;
assert(ll);
assert(link);
r = sd_ipv4ll_get_address(ll, &address);
if (r == -ENOENT)
return 0;
else if (r < 0)
return r;
log_link_debug(link, "IPv4 link-local claim %u.%u.%u.%u",
ADDRESS_FMT_VAL(address));
r = address_new(&ll_addr);
if (r < 0)
return r;
ll_addr->family = AF_INET;
ll_addr->in_addr.in = address;
ll_addr->prefixlen = 16;
ll_addr->broadcast.s_addr = ll_addr->in_addr.in.s_addr | htonl(0xfffffffflu >> ll_addr->prefixlen);
ll_addr->scope = RT_SCOPE_LINK;
r = address_configure(ll_addr, link, ipv4ll_address_handler, false);
if (r < 0)
return r;
link->ipv4ll_address = false;
r = route_new(&route);
if (r < 0)
return r;
route->family = AF_INET;
route->scope = RT_SCOPE_LINK;
route->protocol = RTPROT_STATIC;
route->priority = IPV4LL_ROUTE_METRIC;
r = route_configure(route, link, ipv4ll_route_handler);
if (r < 0)
return r;
link->ipv4ll_route = false;
return 0;
}
int route_new_static(Network *network, const char *filename, unsigned section_line, Route **ret) {
_cleanup_network_config_section_free_ NetworkConfigSection *n = NULL;
_cleanup_route_free_ Route *route = NULL;
int r;
assert(network);
assert(ret);
assert(!!filename == (section_line > 0));
if (filename) {
r = network_config_section_new(filename, section_line, &n);
if (r < 0)
return r;
route = hashmap_get(network->routes_by_section, n);
if (route) {
*ret = route;
route = NULL;
return 0;
}
}
if (network->n_static_routes >= routes_max())
return -E2BIG;
r = route_new(&route);
if (r < 0)
return r;
route->protocol = RTPROT_STATIC;
if (filename) {
route->section = n;
n = NULL;
r = hashmap_put(network->routes_by_section, route->section, route);
if (r < 0)
return r;
}
route->network = network;
LIST_PREPEND(routes, network->static_routes, route);
network->n_static_routes++;
*ret = route;
route = NULL;
return 0;
}
static int ipv4ll_address_lost(Link *link) {
_cleanup_address_free_ Address *address = NULL;
_cleanup_route_free_ Route *route = NULL;
struct in_addr addr;
int r;
assert(link);
link->ipv4ll_route = false;
link->ipv4ll_address = false;
r = sd_ipv4ll_get_address(link->ipv4ll, &addr);
if (r < 0)
return 0;
log_link_debug(link, "IPv4 link-local release %u.%u.%u.%u", ADDRESS_FMT_VAL(addr));
r = address_new(&address);
if (r < 0) {
log_link_error_errno(link, r, "Could not allocate address: %m");
return r;
}
address->family = AF_INET;
address->in_addr.in = addr;
address->prefixlen = 16;
address->scope = RT_SCOPE_LINK;
address_remove(address, link, &link_address_remove_handler);
r = route_new(&route);
if (r < 0) {
log_link_error_errno(link, r, "Could not allocate route: %m");
return r;
}
route->family = AF_INET;
route->scope = RT_SCOPE_LINK;
route->priority = IPV4LL_ROUTE_METRIC;
route_remove(route, link, &link_route_remove_handler);
link_check_ready(link);
return 0;
}
static int route_add_internal(
Link *link,
Set **routes,
int family,
const union in_addr_union *dst,
unsigned char dst_prefixlen,
unsigned char tos,
uint32_t priority,
unsigned char table,
Route **ret) {
_cleanup_route_free_ Route *route = NULL;
int r;
assert(link);
assert(routes);
assert(dst);
r = route_new(&route);
if (r < 0)
return r;
route->family = family;
route->dst = *dst;
route->dst_prefixlen = dst_prefixlen;
route->tos = tos;
route->priority = priority;
route->table = table;
r = set_ensure_allocated(routes, &route_hash_ops);
if (r < 0)
return r;
r = set_put(*routes, route);
if (r < 0)
return r;
route->link = link;
if (ret)
*ret = route;
route = NULL;
return 0;
}
int route_new_static(Network *network, unsigned section, Route **ret) {
_cleanup_route_free_ Route *route = NULL;
int r;
assert(network);
assert(ret);
if (section) {
route = hashmap_get(network->routes_by_section, UINT_TO_PTR(section));
if (route) {
*ret = route;
route = NULL;
return 0;
}
}
if (network->n_static_routes >= STATIC_ROUTES_PER_NETWORK_MAX)
return -E2BIG;
r = route_new(&route);
if (r < 0)
return r;
route->protocol = RTPROT_STATIC;
if (section) {
route->section = section;
r = hashmap_put(network->routes_by_section, UINT_TO_PTR(route->section), route);
if (r < 0)
return r;
}
route->network = network;
LIST_PREPEND(routes, network->static_routes, route);
network->n_static_routes++;
*ret = route;
route = NULL;
return 0;
}
int main(int argc, char **argv)
{
#if 0
CORBA_Environment ev;
CORBA_ORB orb;
Map map_client = CORBA_OBJECT_NIL;
#endif
char *gps;
setenv("LC_NUMERIC","C",1);
setlocale(LC_ALL,"");
setlocale(LC_NUMERIC,"C");
gtk_set_locale();
setlocale(LC_NUMERIC,"C");
debug_init();
gtk_init(&argc, &argv);
gdk_rgb_init();
// i18n basic support
bindtextdomain( "navit", "./locale" );
textdomain( "navit" );
map_data_default=load_maps(NULL);
plugin_load();
co=gui_gtk_window(1300000,7000000,32);
co->route=route_new();
route_mapdata_set(co->route, co->map_data);
gps=getenv("GPSDATA");
if (gps) {
co->vehicle=vehicle_new(gps);
if (co->vehicle) {
co->cursor=cursor_new(co,co->vehicle);
sdl_gui_new(co->vehicle);
}
} else {
g_warning(gettext("Environment-Variable GPSDATA not set - No gps tracking. Set it to file:filename or gpsd://host[:port]"));
}
co->speech=speech_new();
if (! co->speech)
g_warning(gettext("Can't connect to speechd, no speech output available"));
speech_handle=co->speech;
if (co->vehicle)
co->compass=compass_new(co);
if (co->vehicle)
co->track=track_new(co->map_data);
#if 0
CORBA_exception_init(&ev);
orb = CORBA_ORB_init(&argc, argv, "orbit-local-orb", &ev);
g_assert(ev._major == CORBA_NO_EXCEPTION);
map_srv_start_poa(orb, &ev);
g_assert(ev._major == CORBA_NO_EXCEPTION);
map_client = map_srv_start_object(&ev, map);
retval = CORBA_ORB_object_to_string(orb, map_client, &ev);
g_assert(ev._major == CORBA_NO_EXCEPTION);
ior=fopen("map.ior","w");
if (ior) {
fprintf(ior, "%s\n", retval);
fclose(ior);
}
CORBA_free(retval);
#endif
initSDL();
gtk_main();
return 0;
}
static int link_set_dhcp_routes(Link *link) {
struct in_addr gateway, address;
_cleanup_free_ sd_dhcp_route **static_routes = NULL;
int r, n, i;
assert(link);
assert(link->dhcp_lease);
assert(link->network);
if (!link->network->dhcp_use_routes)
return 0;
r = sd_dhcp_lease_get_address(link->dhcp_lease, &address);
if (r < 0)
return log_link_warning_errno(link, r, "DHCP error: could not get address: %m");
r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);
if (r < 0 && r != -ENODATA)
return log_link_warning_errno(link, r, "DHCP error: could not get gateway: %m");
if (r >= 0) {
_cleanup_route_free_ Route *route = NULL;
_cleanup_route_free_ Route *route_gw = NULL;
r = route_new(&route);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate route: %m");
route->protocol = RTPROT_DHCP;
r = route_new(&route_gw);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate route: %m");
/* The dhcp netmask may mask out the gateway. Add an explicit
* route for the gw host so that we can route no matter the
* netmask or existing kernel route tables. */
route_gw->family = AF_INET;
route_gw->dst.in = gateway;
route_gw->dst_prefixlen = 32;
route_gw->prefsrc.in = address;
route_gw->scope = RT_SCOPE_LINK;
route_gw->protocol = RTPROT_DHCP;
route_gw->priority = link->network->dhcp_route_metric;
route_gw->table = link->network->dhcp_route_table;
r = route_configure(route_gw, link, dhcp4_route_handler);
if (r < 0)
return log_link_warning_errno(link, r, "Could not set host route: %m");
link->dhcp4_messages++;
route->family = AF_INET;
route->gw.in = gateway;
route->prefsrc.in = address;
route->priority = link->network->dhcp_route_metric;
route->table = link->network->dhcp_route_table;
r = route_configure(route, link, dhcp4_route_handler);
if (r < 0) {
log_link_warning_errno(link, r, "Could not set routes: %m");
link_enter_failed(link);
return r;
}
link->dhcp4_messages++;
}
n = sd_dhcp_lease_get_routes(link->dhcp_lease, &static_routes);
if (n == -ENODATA)
return 0;
if (n < 0)
return log_link_warning_errno(link, n, "DHCP error: could not get routes: %m");
for (i = 0; i < n; i++) {
_cleanup_route_free_ Route *route = NULL;
r = route_new(&route);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate route: %m");
route->family = AF_INET;
route->protocol = RTPROT_DHCP;
assert_se(sd_dhcp_route_get_gateway(static_routes[i], &route->gw.in) >= 0);
assert_se(sd_dhcp_route_get_destination(static_routes[i], &route->dst.in) >= 0);
assert_se(sd_dhcp_route_get_destination_prefix_length(static_routes[i], &route->dst_prefixlen) >= 0);
route->priority = link->network->dhcp_route_metric;
route->table = link->network->dhcp_route_table;
route->scope = route_scope_from_address(route, &address);
r = route_configure(route, link, dhcp4_route_handler);
if (r < 0)
return log_link_warning_errno(link, r, "Could not set host route: %m");
link->dhcp4_messages++;
}
return 0;
}
static int dhcp_lease_lost(Link *link) {
_cleanup_address_free_ Address *address = NULL;
struct in_addr addr;
struct in_addr netmask;
struct in_addr gateway;
unsigned prefixlen = 0;
int r;
assert(link);
assert(link->dhcp_lease);
log_link_warning(link, "DHCP lease lost");
if (link->network->dhcp_use_routes) {
_cleanup_free_ sd_dhcp_route **routes = NULL;
int n, i;
n = sd_dhcp_lease_get_routes(link->dhcp_lease, &routes);
if (n >= 0) {
for (i = 0; i < n; i++) {
_cleanup_route_free_ Route *route = NULL;
r = route_new(&route);
if (r >= 0) {
route->family = AF_INET;
assert_se(sd_dhcp_route_get_gateway(routes[i], &route->gw.in) >= 0);
assert_se(sd_dhcp_route_get_destination(routes[i], &route->dst.in) >= 0);
assert_se(sd_dhcp_route_get_destination_prefix_length(routes[i], &route->dst_prefixlen) >= 0);
route_remove(route, link,
link_route_remove_handler);
}
}
}
}
r = address_new(&address);
if (r >= 0) {
r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);
if (r >= 0) {
_cleanup_route_free_ Route *route_gw = NULL;
_cleanup_route_free_ Route *route = NULL;
r = route_new(&route_gw);
if (r >= 0) {
route_gw->family = AF_INET;
route_gw->dst.in = gateway;
route_gw->dst_prefixlen = 32;
route_gw->scope = RT_SCOPE_LINK;
route_remove(route_gw, link,
link_route_remove_handler);
}
r = route_new(&route);
if (r >= 0) {
route->family = AF_INET;
route->gw.in = gateway;
route_remove(route, link,
link_route_remove_handler);
}
}
r = sd_dhcp_lease_get_address(link->dhcp_lease, &addr);
if (r >= 0) {
r = sd_dhcp_lease_get_netmask(link->dhcp_lease, &netmask);
if (r >= 0)
prefixlen = in_addr_netmask_to_prefixlen(&netmask);
address->family = AF_INET;
address->in_addr.in = addr;
address->prefixlen = prefixlen;
address_remove(address, link, link_address_remove_handler);
}
}
if (link->network->dhcp_use_mtu) {
uint16_t mtu;
r = sd_dhcp_lease_get_mtu(link->dhcp_lease, &mtu);
if (r >= 0 && link->original_mtu != mtu) {
r = link_set_mtu(link, link->original_mtu);
if (r < 0) {
log_link_warning(link,
"DHCP error: could not reset MTU");
link_enter_failed(link);
return r;
}
}
}
if (link->network->dhcp_use_hostname) {
const char *hostname = NULL;
if (link->network->dhcp_hostname)
hostname = link->network->dhcp_hostname;
else
(void) sd_dhcp_lease_get_hostname(link->dhcp_lease, &hostname);
if (hostname) {
/* If a hostname was set due to the lease, then unset it now. */
r = manager_set_hostname(link->manager, NULL);
if (r < 0)
log_link_warning_errno(link, r, "Failed to reset transient hostname: %m");
}
}
link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease);
link_dirty(link);
link->dhcp4_configured = false;
return 0;
}
static int link_set_dhcp_routes(Link *link) {
_cleanup_free_ sd_dhcp_route **static_routes = NULL;
bool classless_route = false, static_route = false;
const struct in_addr *router;
struct in_addr address;
int r, n, i;
uint32_t table;
assert(link);
if (!link->dhcp_lease) /* link went down while we configured the IP addresses? */
return 0;
if (!link->network) /* link went down while we configured the IP addresses? */
return 0;
if (!link->network->dhcp_use_routes)
return 0;
table = link_get_dhcp_route_table(link);
r = sd_dhcp_lease_get_address(link->dhcp_lease, &address);
if (r < 0)
return log_link_warning_errno(link, r, "DHCP error: could not get address: %m");
n = sd_dhcp_lease_get_routes(link->dhcp_lease, &static_routes);
if (n == -ENODATA)
log_link_debug_errno(link, n, "DHCP: No routes received from DHCP server: %m");
else if (n < 0)
log_link_debug_errno(link, n, "DHCP error: could not get routes: %m");
for (i = 0; i < n; i++) {
switch (sd_dhcp_route_get_option(static_routes[i])) {
case SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE:
classless_route = true;
break;
case SD_DHCP_OPTION_STATIC_ROUTE:
static_route = true;
break;
}
}
for (i = 0; i < n; i++) {
_cleanup_(route_freep) Route *route = NULL;
/* if the DHCP server returns both a Classless Static Routes option and a Static Routes option,
the DHCP client MUST ignore the Static Routes option. */
if (classless_route &&
sd_dhcp_route_get_option(static_routes[i]) != SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE)
continue;
r = route_new(&route);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate route: %m");
route->family = AF_INET;
route->protocol = RTPROT_DHCP;
assert_se(sd_dhcp_route_get_gateway(static_routes[i], &route->gw.in) >= 0);
assert_se(sd_dhcp_route_get_destination(static_routes[i], &route->dst.in) >= 0);
assert_se(sd_dhcp_route_get_destination_prefix_length(static_routes[i], &route->dst_prefixlen) >= 0);
route->priority = link->network->dhcp_route_metric;
route->table = table;
route->scope = route_scope_from_address(route, &address);
r = route_configure(route, link, dhcp4_route_handler);
if (r < 0)
return log_link_warning_errno(link, r, "Could not set host route: %m");
link->dhcp4_messages++;
}
r = sd_dhcp_lease_get_router(link->dhcp_lease, &router);
if (IN_SET(r, 0, -ENODATA))
log_link_info(link, "DHCP: No gateway received from DHCP server.");
else if (r < 0)
log_link_warning_errno(link, r, "DHCP error: could not get gateway: %m");
else if (in4_addr_is_null(&router[0]))
log_link_info(link, "DHCP: Received gateway is null.");
/* According to RFC 3442: If the DHCP server returns both a Classless Static Routes option and
a Router option, the DHCP client MUST ignore the Router option. */
if (classless_route && static_route)
log_link_warning(link, "Classless static routes received from DHCP server: ignoring static-route option and router option");
if (r > 0 && !classless_route && !in4_addr_is_null(&router[0])) {
_cleanup_(route_freep) Route *route = NULL, *route_gw = NULL;
r = route_new(&route_gw);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate route: %m");
/* The dhcp netmask may mask out the gateway. Add an explicit
* route for the gw host so that we can route no matter the
* netmask or existing kernel route tables. */
route_gw->family = AF_INET;
route_gw->dst.in = router[0];
route_gw->dst_prefixlen = 32;
route_gw->prefsrc.in = address;
route_gw->scope = RT_SCOPE_LINK;
route_gw->protocol = RTPROT_DHCP;
route_gw->priority = link->network->dhcp_route_metric;
route_gw->table = table;
r = route_configure(route_gw, link, dhcp4_route_handler);
if (r < 0)
return log_link_warning_errno(link, r, "Could not set host route: %m");
link->dhcp4_messages++;
r = route_new(&route);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate route: %m");
route->family = AF_INET;
route->gw.in = router[0];
route->prefsrc.in = address;
route->protocol = RTPROT_DHCP;
route->priority = link->network->dhcp_route_metric;
route->table = table;
r = route_configure(route, link, dhcp4_route_handler);
if (r < 0) {
log_link_warning_errno(link, r, "Could not set routes: %m");
link_enter_failed(link);
return r;
}
link->dhcp4_messages++;
}
return 0;
}
void
navit_init(struct navit *this_)
{
struct menu *mapmen,*men,*men2;
struct map *map;
struct mapset_handle *handle;
struct mapset *ms=this_->mapsets->data;
if (this_->menubar) {
mapmen=menu_add(this_->menubar, "Map", menu_type_submenu, NULL, NULL, NULL);
// menu_add(map, "Test", menu_type_menu, NULL, NULL);
men=menu_add(mapmen, "Layout", menu_type_submenu, NULL, NULL, NULL);
menu_add(men, "Test", menu_type_menu, NULL, NULL, NULL);
men=menu_add(mapmen, "Projection", menu_type_submenu, NULL, NULL, NULL);
menu_add(men, "M&G", menu_type_menu, navit_projection_set, this_, (void *)projection_mg);
menu_add(men, "Garmin", menu_type_menu, navit_projection_set, this_, (void *)projection_garmin);
handle=mapset_open(ms);
while ((map=mapset_next(handle,0))) {
char *s=g_strdup_printf("%s:%s", map_get_type(map), map_get_filename(map));
men2=menu_add(mapmen, s, menu_type_toggle, navit_map_toggle, this_, map);
menu_set_toggle(men2, map_get_active(map));
g_free(s);
}
mapset_close(handle);
}
{
struct mapset *ms=this_->mapsets->data;
struct coord c;
int pos,flag=0;
FILE *f;
char buffer[2048];
this_->route=route_new(ms);
this_->navigation=navigation_new(ms);
dbg(0,"navigation_register_callback(%p, ... %p)\n", this_->navigation, this_);
navigation_register_callback(this_->navigation, navigation_mode_long, navit_show_roadbook, this_);
#if 1
this_->track=track_new(ms);
#endif
men=NULL;
if (this_->menubar) {
men=menu_add(this_->menubar, "Route", menu_type_submenu, NULL, NULL, NULL);
men=menu_add(men, "Former Destinations", menu_type_submenu, NULL, NULL, NULL);
}
f=fopen("destination.txt", "r");
if (f) {
while (! feof(f) && fgets(buffer, 2048, f)) {
if ((pos=coord_parse(buffer, projection_mg, &c))) {
if (buffer[pos] && buffer[pos] != '\n' ) {
struct coord *cn=g_new(struct coord, 1);
*cn=c;
buffer[strlen(buffer)-1]='\0';
if (men)
menu_add(men, buffer+pos+1, menu_type_menu, navit_set_destination_menu, this_, cn);
}
flag=1;
}
}
fclose(f);
if (flag)
route_set_destination(this_->route, &c);
}
}
global_navit=this_;
}
static int link_set_dhcp_routes(Link *link) {
_cleanup_free_ sd_dhcp_route **static_routes = NULL;
bool classless_route = false, static_route = false;
struct in_addr gateway, address;
int r, n, i;
uint32_t table;
assert(link);
if (!link->dhcp_lease) /* link went down while we configured the IP addresses? */
return 0;
if (!link->network) /* link went down while we configured the IP addresses? */
return 0;
if (!link->network->dhcp_use_routes)
return 0;
/* When the interface is part of an VRF use the VRFs routing table, unless
* there is a another table specified. */
table = link->network->dhcp_route_table;
if (!link->network->dhcp_route_table_set && link->network->vrf != NULL)
table = VRF(link->network->vrf)->table;
r = sd_dhcp_lease_get_address(link->dhcp_lease, &address);
if (r < 0)
return log_link_warning_errno(link, r, "DHCP error: could not get address: %m");
n = sd_dhcp_lease_get_routes(link->dhcp_lease, &static_routes);
if (n < 0)
log_link_debug_errno(link, n, "DHCP error: could not get routes: %m");
for (i = 0; i < n; i++) {
if (static_routes[i]->option == SD_DHCP_OPTION_CLASSLESS_STATIC_ROUTE)
classless_route = true;
if (static_routes[i]->option == SD_DHCP_OPTION_STATIC_ROUTE)
static_route = true;
}
for (i = 0; i < n; i++) {
_cleanup_route_free_ Route *route = NULL;
/* if the DHCP server returns both a Classless Static Routes option and a Static Routes option,
the DHCP client MUST ignore the Static Routes option. */
if (classless_route && static_routes[i]->option == SD_DHCP_OPTION_STATIC_ROUTE)
continue;
r = route_new(&route);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate route: %m");
route->family = AF_INET;
route->protocol = RTPROT_DHCP;
assert_se(sd_dhcp_route_get_gateway(static_routes[i], &route->gw.in) >= 0);
assert_se(sd_dhcp_route_get_destination(static_routes[i], &route->dst.in) >= 0);
assert_se(sd_dhcp_route_get_destination_prefix_length(static_routes[i], &route->dst_prefixlen) >= 0);
route->priority = link->network->dhcp_route_metric;
route->table = table;
route->scope = route_scope_from_address(route, &address);
r = route_configure(route, link, dhcp4_route_handler);
if (r < 0)
return log_link_warning_errno(link, r, "Could not set host route: %m");
link->dhcp4_messages++;
}
r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);
if (r == -ENODATA)
log_link_info_errno(link, r, "DHCP: No routes received from DHCP server: %m");
else if (r < 0)
log_link_warning_errno(link, r, "DHCP error: could not get gateway: %m");
/* According to RFC 3442: If the DHCP server returns both a Classless Static Routes option and
a Router option, the DHCP client MUST ignore the Router option. */
if (classless_route && static_route)
log_link_warning(link, "Classless static routes received from DHCP server: ignoring static-route option and router option");
if (r >= 0 && !classless_route) {
_cleanup_route_free_ Route *route = NULL;
_cleanup_route_free_ Route *route_gw = NULL;
r = route_new(&route);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate route: %m");
route->protocol = RTPROT_DHCP;
r = route_new(&route_gw);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate route: %m");
/* The dhcp netmask may mask out the gateway. Add an explicit
* route for the gw host so that we can route no matter the
* netmask or existing kernel route tables. */
route_gw->family = AF_INET;
route_gw->dst.in = gateway;
route_gw->dst_prefixlen = 32;
route_gw->prefsrc.in = address;
route_gw->scope = RT_SCOPE_LINK;
route_gw->protocol = RTPROT_DHCP;
route_gw->priority = link->network->dhcp_route_metric;
route_gw->table = table;
r = route_configure(route_gw, link, dhcp4_route_handler);
if (r < 0)
return log_link_warning_errno(link, r, "Could not set host route: %m");
link->dhcp4_messages++;
route->family = AF_INET;
route->gw.in = gateway;
route->prefsrc.in = address;
route->priority = link->network->dhcp_route_metric;
route->table = table;
r = route_configure(route, link, dhcp4_route_handler);
if (r < 0) {
log_link_warning_errno(link, r, "Could not set routes: %m");
link_enter_failed(link);
return r;
}
link->dhcp4_messages++;
}
return 0;
}
