static int dhcp4_update_address(Link *link, struct in_addr *address, struct in_addr *netmask, uint32_t lifetime) { _cleanup_address_free_ Address *addr = NULL; unsigned prefixlen; int r; assert(address); assert(netmask); assert(lifetime); prefixlen = in_addr_netmask_to_prefixlen(netmask); r = address_new_dynamic(&addr); if (r < 0) return r; addr->family = AF_INET; addr->in_addr.in.s_addr = address->s_addr; addr->cinfo.ifa_prefered = lifetime; addr->cinfo.ifa_valid = lifetime; addr->prefixlen = prefixlen; addr->broadcast.s_addr = address->s_addr | ~netmask->s_addr; /* use update rather than configure so that we will update the * lifetime of an existing address if it has already been configured */ r = address_update(addr, link, &dhcp4_address_handler); if (r < 0) return r; return 0; }
static int dhcp6_address_update(Link *link, struct in6_addr *ip6_addr, uint8_t prefixlen, uint32_t lifetime_preferred, uint32_t lifetime_valid) { int r; _cleanup_address_free_ Address *addr = NULL; r = address_new_dynamic(&addr); if (r < 0) return r; addr->family = AF_INET6; memcpy(&addr->in_addr.in6, ip6_addr, sizeof(*ip6_addr)); addr->flags = IFA_F_NOPREFIXROUTE; addr->prefixlen = prefixlen; addr->cinfo.ifa_prefered = lifetime_preferred; addr->cinfo.ifa_valid = lifetime_valid; log_link_struct(link, LOG_INFO, "MESSAGE=%-*s: DHCPv6 address "SD_ICMP6_ADDRESS_FORMAT_STR"/%d timeout preferred %d valid %d", IFNAMSIZ, link->ifname, SD_ICMP6_ADDRESS_FORMAT_VAL(addr->in_addr.in6), addr->prefixlen, lifetime_preferred, lifetime_valid, NULL); r = address_update(addr, link, dhcp6_address_handler); if (r < 0) log_link_warning(link, "Could not assign DHCPv6 address: %s", strerror(-r)); return r; }
static void test_address_equality(void) { _cleanup_address_free_ Address *a1 = NULL, *a2 = NULL; assert_se(address_new_dynamic(&a1) >= 0); assert_se(address_new_dynamic(&a2) >= 0); assert_se(address_equal(NULL, NULL)); assert_se(!address_equal(a1, NULL)); assert_se(!address_equal(NULL, a2)); assert_se(address_equal(a1, a2)); a1->family = AF_INET; assert_se(!address_equal(a1, a2)); a2->family = AF_INET; assert_se(address_equal(a1, a2)); assert_se(inet_pton(AF_INET, "192.168.3.9", &a1->in_addr.in)); assert_se(address_equal(a1, a2)); assert_se(inet_pton(AF_INET, "192.168.3.9", &a2->in_addr.in)); assert_se(address_equal(a1, a2)); a1->prefixlen = 10; assert_se(!address_equal(a1, a2)); a2->prefixlen = 10; assert_se(address_equal(a1, a2)); assert_se(inet_pton(AF_INET, "192.168.3.10", &a2->in_addr.in)); assert_se(address_equal(a1, a2)); a1->family = AF_INET6; assert_se(!address_equal(a1, a2)); a2->family = AF_INET6; assert_se(inet_pton(AF_INET6, "2001:4ca0:4f01::2", &a1->in_addr.in6)); assert_se(inet_pton(AF_INET6, "2001:4ca0:4f01::2", &a2->in_addr.in6)); assert_se(address_equal(a1, a2)); a2->prefixlen = 8; assert_se(address_equal(a1, a2)); assert_se(inet_pton(AF_INET6, "2001:4ca0:4f01::1", &a2->in_addr.in6)); assert_se(!address_equal(a1, a2)); }
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_dynamic(&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); if (r < 0) return r; link->ipv4ll_address = false; r = route_new_dynamic(&route, RTPROT_STATIC); if (r < 0) return r; route->family = AF_INET; route->scope = RT_SCOPE_LINK; route->metrics = IPV4LL_ROUTE_METRIC; r = route_configure(route, link, ipv4ll_route_handler); if (r < 0) return r; link->ipv4ll_route = false; 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_dynamic(&address); if (r < 0) { log_link_error(link, "Could not allocate address: %s", strerror(-r)); return r; } address->family = AF_INET; address->in_addr.in = addr; address->prefixlen = 16; address->scope = RT_SCOPE_LINK; address_drop(address, link, &link_address_drop_handler); r = route_new_dynamic(&route, RTPROT_UNSPEC); if (r < 0) { log_link_error(link, "Could not allocate route: %s", strerror(-r)); return r; } route->family = AF_INET; route->scope = RT_SCOPE_LINK; route->metrics = IPV4LL_ROUTE_METRIC; route_drop(route, link, &link_route_drop_handler); link_client_handler(link); return 0; }
int config_parse_dns(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) { Address **dns = data; _cleanup_address_free_ Address *n = NULL; int r; assert(filename); assert(section); assert(lvalue); assert(rvalue); assert(data); r = address_new_dynamic(&n); if (r < 0) return r; r = net_parse_inaddr(rvalue, &n->family, &n->in_addr); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "DNS address is invalid, ignoring assignment: %s", rvalue); return 0; } *dns = n; n = NULL; 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_routes) { struct sd_dhcp_route *routes; 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_dynamic(&route, RTPROT_UNSPEC); if (r >= 0) { route->family = AF_INET; route->in_addr.in = routes[i].gw_addr; route->dst_addr.in = routes[i].dst_addr; route->dst_prefixlen = routes[i].dst_prefixlen; route_drop(route, link, &link_route_drop_handler); } } } } r = address_new_dynamic(&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_dynamic(&route_gw, RTPROT_UNSPEC); if (r >= 0) { route_gw->family = AF_INET; route_gw->dst_addr.in = gateway; route_gw->dst_prefixlen = 32; route_gw->scope = RT_SCOPE_LINK; route_drop(route_gw, link, &link_route_drop_handler); } r = route_new_dynamic(&route, RTPROT_UNSPEC); if (r >= 0) { route->family = AF_INET; route->in_addr.in = gateway; route_drop(route, link, &link_route_drop_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_drop(address, link, &link_address_drop_handler); } } if (link->network->dhcp_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_hostname) { const char *hostname = NULL; if (!link->network->hostname) r = sd_dhcp_lease_get_hostname(link->dhcp_lease, &hostname); else hostname = link->network->hostname; if (r >= 0 || hostname) { r = link_set_hostname(link, hostname); if (r < 0) log_link_error_errno(link, r, "Failed to set transient hostname to '%s': %m", hostname); } } link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); link->dhcp4_configured = false; return 0; }