int main(void) {
sd_rtnl *rtnl;
sd_rtnl_message *m;
sd_rtnl_message *r;
char *string_data;
int if_loopback;
uint16_t type;
test_match();
test_multiple();
test_route();
test_container();
assert_se(sd_rtnl_open(&rtnl, 0) >= 0);
assert_se(rtnl);
if_loopback = (int) if_nametoindex("lo");
assert_se(if_loopback > 0);
test_async(if_loopback);
test_pipe(if_loopback);
test_event_loop(if_loopback);
test_link_configure(rtnl, if_loopback);
test_get_addresses(rtnl);
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, if_loopback) >= 0);
assert_se(m);
assert_se(sd_rtnl_message_get_type(m, &type) >= 0);
assert_se(type == RTM_GETLINK);
assert_se(sd_rtnl_message_read_string(m, IFLA_IFNAME, &string_data) == -EPERM);
assert_se(sd_rtnl_call(rtnl, m, 0, &r) == 1);
assert_se(sd_rtnl_message_get_type(r, &type) >= 0);
assert_se(type == RTM_NEWLINK);
assert_se((r = sd_rtnl_message_unref(r)) == NULL);
assert_se(sd_rtnl_call(rtnl, m, -1, &r) == -EPERM);
assert_se((m = sd_rtnl_message_unref(m)) == NULL);
assert_se((r = sd_rtnl_message_unref(r)) == NULL);
test_link_get(rtnl, if_loopback);
test_address_get(rtnl, if_loopback);
assert_se(sd_rtnl_flush(rtnl) >= 0);
assert_se((m = sd_rtnl_message_unref(m)) == NULL);
assert_se((r = sd_rtnl_message_unref(r)) == NULL);
assert_se((rtnl = sd_rtnl_unref(rtnl)) == NULL);
return EXIT_SUCCESS;
}
int rtnl_set_link_name(sd_rtnl **rtnl, int ifindex, const char *name) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL;
int r;
assert(rtnl);
assert(ifindex > 0);
assert(name);
if (!*rtnl) {
r = sd_rtnl_open(rtnl, 0);
if (r < 0)
return r;
}
r = sd_rtnl_message_new_link(*rtnl, &message, RTM_SETLINK, ifindex);
if (r < 0)
return r;
r = sd_rtnl_message_append_string(message, IFLA_IFNAME, name);
if (r < 0)
return r;
r = sd_rtnl_call(*rtnl, message, 0, NULL);
if (r < 0)
return r;
return 0;
}
static void test_link_configure(sd_rtnl *rtnl, int ifindex) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *message;
uint16_t type;
const char *mac = "98:fe:94:3f:c6:18", *name = "test";
unsigned int mtu = 1450;
void *data;
/* we'd really like to test NEWLINK, but let's not mess with the running kernel */
assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0);
assert_se(sd_rtnl_message_append_string(message, IFLA_IFNAME, name) >= 0);
assert_se(sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
assert_se(sd_rtnl_message_append_u32(message, IFLA_MTU, mtu) >= 0);
assert_se(sd_rtnl_call(rtnl, message, 0, NULL) == 1);
assert_se(sd_rtnl_message_read(message, &type, &data) > 0);
assert_se(type == IFLA_IFNAME);
assert_se(streq(name, (char *) data));
assert_se(sd_rtnl_message_read(message, &type, &data) > 0);
assert_se(type == IFLA_ADDRESS);
assert_se(streq(mac, ether_ntoa(data)));
assert_se(sd_rtnl_message_read(message, &type, &data) > 0);
assert_se(type == IFLA_MTU);
assert_se(mtu == *(unsigned int *) data);
}
static void test_get_addresses(sd_rtnl *rtnl) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
sd_rtnl_message *m;
assert_se(sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, AF_UNSPEC) >= 0);
assert_se(sd_rtnl_call(rtnl, req, 0, &reply) >= 0);
for (m = reply; m; m = sd_rtnl_message_next(m)) {
uint16_t type;
unsigned char scope, flags;
int family, ifindex;
assert_se(sd_rtnl_message_get_type(m, &type) >= 0);
assert_se(type == RTM_NEWADDR);
assert_se(sd_rtnl_message_addr_get_ifindex(m, &ifindex) >= 0);
assert_se(sd_rtnl_message_addr_get_family(m, &family) >= 0);
assert_se(sd_rtnl_message_addr_get_scope(m, &scope) >= 0);
assert_se(sd_rtnl_message_addr_get_flags(m, &flags) >= 0);
assert_se(ifindex > 0);
assert_se(family == AF_INET || family == AF_INET6);
log_info("got IPv%u address on ifindex %i", family == AF_INET ? 4: 6, ifindex);
}
}
static void test_link_configure(sd_rtnl *rtnl, int ifindex) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL;
const char *mac = "98:fe:94:3f:c6:18", *name = "test";
char buffer[ETHER_ADDR_TO_STRING_MAX];
unsigned int mtu = 1450, mtu_out;
const char *name_out;
struct ether_addr mac_out;
/* we'd really like to test NEWLINK, but let's not mess with the running kernel */
assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0);
assert_se(sd_rtnl_message_append_string(message, IFLA_IFNAME, name) >= 0);
assert_se(sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
assert_se(sd_rtnl_message_append_u32(message, IFLA_MTU, mtu) >= 0);
assert_se(sd_rtnl_call(rtnl, message, 0, NULL) == 1);
assert_se(sd_rtnl_message_rewind(message) >= 0);
assert_se(sd_rtnl_message_read_string(message, IFLA_IFNAME, &name_out) >= 0);
assert_se(streq(name, name_out));
assert_se(sd_rtnl_message_read_ether_addr(message, IFLA_ADDRESS, &mac_out) >= 0);
assert_se(streq(mac, ether_addr_to_string(&mac_out, buffer)));
assert_se(sd_rtnl_message_read_u32(message, IFLA_MTU, &mtu_out) >= 0);
assert_se(mtu == mtu_out);
}
int rtnl_set_link_properties(sd_rtnl *rtnl, int ifindex, const char *alias,
const struct ether_addr *mac, unsigned mtu) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL;
bool need_update = false;
int r;
assert(rtnl);
assert(ifindex > 0);
if (!alias && !mac && mtu == 0)
return 0;
r = sd_rtnl_message_new_link(rtnl, &message, RTM_SETLINK, ifindex);
if (r < 0)
return r;
if (alias) {
r = sd_rtnl_message_append_string(message, IFLA_IFALIAS, alias);
if (r < 0)
return r;
need_update = true;
}
if (mac) {
r = sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, mac);
if (r < 0)
return r;
need_update = true;
}
if (mtu > 0) {
r = sd_rtnl_message_append_u32(message, IFLA_MTU, mtu);
if (r < 0)
return r;
need_update = true;
}
if (need_update) {
r = sd_rtnl_call(rtnl, message, 0, NULL);
if (r < 0)
return r;
}
return 0;
}
static int start_loopback(sd_rtnl *rtnl) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
r = sd_rtnl_message_new_link(rtnl, &req, RTM_SETLINK, LOOPBACK_IFINDEX);
if (r < 0)
return r;
r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP);
if (r < 0)
return r;
r = sd_rtnl_call(rtnl, req, 0, NULL);
if (r < 0)
return r;
return 0;
}
static void test_link_get(sd_rtnl *rtnl, int ifindex) {
sd_rtnl_message *m;
sd_rtnl_message *r;
unsigned int mtu = 1500;
const char *str_data;
uint8_t u8_data;
uint32_t u32_data;
struct ether_addr eth_data;
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
assert_se(m);
/* u8 test cases */
assert_se(sd_rtnl_message_append_u8(m, IFLA_CARRIER, 0) >= 0);
assert_se(sd_rtnl_message_append_u8(m, IFLA_OPERSTATE, 0) >= 0);
assert_se(sd_rtnl_message_append_u8(m, IFLA_LINKMODE, 0) >= 0);
/* u32 test cases */
assert_se(sd_rtnl_message_append_u32(m, IFLA_MTU, mtu) >= 0);
assert_se(sd_rtnl_message_append_u32(m, IFLA_GROUP, 0) >= 0);
assert_se(sd_rtnl_message_append_u32(m, IFLA_TXQLEN, 0) >= 0);
assert_se(sd_rtnl_message_append_u32(m, IFLA_NUM_TX_QUEUES, 0) >= 0);
assert_se(sd_rtnl_message_append_u32(m, IFLA_NUM_RX_QUEUES, 0) >= 0);
assert_se(sd_rtnl_call(rtnl, m, -1, &r) == 1);
assert_se(sd_rtnl_message_read_string(r, IFLA_IFNAME, &str_data) == 0);
assert_se(sd_rtnl_message_read_u8(r, IFLA_CARRIER, &u8_data) == 0);
assert_se(sd_rtnl_message_read_u8(r, IFLA_OPERSTATE, &u8_data) == 0);
assert_se(sd_rtnl_message_read_u8(r, IFLA_LINKMODE, &u8_data) == 0);
assert_se(sd_rtnl_message_read_u32(r, IFLA_MTU, &u32_data) == 0);
assert_se(sd_rtnl_message_read_u32(r, IFLA_GROUP, &u32_data) == 0);
assert_se(sd_rtnl_message_read_u32(r, IFLA_TXQLEN, &u32_data) == 0);
assert_se(sd_rtnl_message_read_u32(r, IFLA_NUM_TX_QUEUES, &u32_data) == 0);
assert_se(sd_rtnl_message_read_u32(r, IFLA_NUM_RX_QUEUES, &u32_data) == 0);
assert_se(sd_rtnl_message_read_ether_addr(r, IFLA_ADDRESS, ð_data) == 0);
assert_se(sd_rtnl_flush(rtnl) >= 0);
assert_se((m = sd_rtnl_message_unref(m)) == NULL);
assert_se((r = sd_rtnl_message_unref(r)) == NULL);
}
static bool check_loopback(sd_rtnl *rtnl) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
unsigned flags;
int r;
r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, LOOPBACK_IFINDEX);
if (r < 0)
return false;
r = sd_rtnl_call(rtnl, req, 0, &reply);
if (r < 0)
return false;
r = sd_rtnl_message_link_get_flags(reply, &flags);
if (r < 0)
return false;
return flags & IFF_UP;
}
static void test_address_get(sd_rtnl *rtnl, int ifindex) {
sd_rtnl_message *m;
sd_rtnl_message *r;
struct in_addr in_data;
assert_se(sd_rtnl_message_new_addr(rtnl, &m, RTM_GETADDR, ifindex, AF_INET) >= 0);
assert_se(m);
assert_se(sd_rtnl_call(rtnl, m, -1, &r) == 1);
assert_se(sd_rtnl_message_read_in_addr(r, IFA_LOCAL, &in_data) == 0);
assert_se(sd_rtnl_message_read_in_addr(r, IFA_ADDRESS, &in_data) == 0);
assert_se(sd_rtnl_message_read_in_addr(r, IFA_LABEL, &in_data) == 0);
assert_se(sd_rtnl_message_read_in_addr(r, IFA_CACHEINFO, &in_data) == 0);
assert_se(sd_rtnl_flush(rtnl) >= 0);
assert_se((m = sd_rtnl_message_unref(m)) == NULL);
assert_se((r = sd_rtnl_message_unref(r)) == NULL);
}
int rtnl_set_link_name(sd_rtnl *rtnl, int ifindex, const char *name) {
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *message = NULL;
int r;
assert(rtnl);
assert(ifindex > 0);
assert(name);
r = sd_rtnl_message_link_new(RTM_SETLINK, ifindex, 0, 0, &message);
if (r < 0)
return r;
r = sd_rtnl_message_append(message, IFLA_IFNAME, name);
if (r < 0)
return r;
r = sd_rtnl_call(rtnl, message, 0, NULL);
if (r < 0)
return r;
return 0;
}
static int test_tunnel_configure(sd_rtnl *rtnl) {
int r;
sd_rtnl_message *m, *n;
struct in_addr local, remote;
/* skip test if module cannot be loaded */
r = load_module("ipip");
if(r < 0)
return EXIT_TEST_SKIP;
if(getuid() != 0)
return EXIT_TEST_SKIP;
/* IPIP tunnel */
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
assert_se(m);
assert_se(sd_rtnl_message_append_string(m, IFLA_IFNAME, "ipip-tunnel") >= 0);
assert_se(sd_rtnl_message_append_u32(m, IFLA_MTU, 1234)>= 0);
assert_se(sd_rtnl_message_open_container(m, IFLA_LINKINFO) >= 0);
assert_se(sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA, "ipip") >= 0);
inet_pton(AF_INET, "192.168.21.1", &local.s_addr);
assert_se(sd_rtnl_message_append_u32(m, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
inet_pton(AF_INET, "192.168.21.2", &remote.s_addr);
assert_se(sd_rtnl_message_append_u32(m, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
assert_se(sd_rtnl_message_close_container(m) >= 0);
assert_se(sd_rtnl_message_close_container(m) >= 0);
assert_se(sd_rtnl_call(rtnl, m, -1, 0) == 1);
assert_se((m = sd_rtnl_message_unref(m)) == NULL);
r = load_module("sit");
if(r < 0)
return EXIT_TEST_SKIP;
/* sit */
assert_se(sd_rtnl_message_new_link(rtnl, &n, RTM_NEWLINK, 0) >= 0);
assert_se(n);
assert_se(sd_rtnl_message_append_string(n, IFLA_IFNAME, "sit-tunnel") >= 0);
assert_se(sd_rtnl_message_append_u32(n, IFLA_MTU, 1234)>= 0);
assert_se(sd_rtnl_message_open_container(n, IFLA_LINKINFO) >= 0);
assert_se(sd_rtnl_message_open_container_union(n, IFLA_INFO_DATA, "sit") >= 0);
assert_se(sd_rtnl_message_append_u8(n, IFLA_IPTUN_PROTO, IPPROTO_IPIP) >= 0);
inet_pton(AF_INET, "192.168.21.3", &local.s_addr);
assert_se(sd_rtnl_message_append_u32(n, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
inet_pton(AF_INET, "192.168.21.4", &remote.s_addr);
assert_se(sd_rtnl_message_append_u32(n, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
assert_se(sd_rtnl_message_close_container(n) >= 0);
assert_se(sd_rtnl_message_close_container(n) >= 0);
assert_se(sd_rtnl_call(rtnl, n, -1, 0) == 1);
assert_se((m = sd_rtnl_message_unref(n)) == NULL);
return EXIT_SUCCESS;
}
int local_gateways(sd_rtnl *context, int ifindex, int af, struct local_address **ret) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
_cleanup_free_ struct local_address *list = NULL;
sd_rtnl_message *m = NULL;
size_t n_list = 0, n_allocated = 0;
int r;
assert(ret);
if (context)
rtnl = sd_rtnl_ref(context);
else {
r = sd_rtnl_open(&rtnl, 0);
if (r < 0)
return r;
}
r = sd_rtnl_message_new_route(rtnl, &req, RTM_GETROUTE, af, RTPROT_UNSPEC);
if (r < 0)
return r;
r = sd_rtnl_message_request_dump(req, true);
if (r < 0)
return r;
r = sd_rtnl_call(rtnl, req, 0, &reply);
if (r < 0)
return r;
for (m = reply; m; m = sd_rtnl_message_next(m)) {
struct local_address *a;
uint16_t type;
unsigned char dst_len, src_len;
uint32_t ifi;
int family;
r = sd_rtnl_message_get_errno(m);
if (r < 0)
return r;
r = sd_rtnl_message_get_type(m, &type);
if (r < 0)
return r;
if (type != RTM_NEWROUTE)
continue;
/* We only care for default routes */
r = sd_rtnl_message_route_get_dst_prefixlen(m, &dst_len);
if (r < 0)
return r;
if (dst_len != 0)
continue;
r = sd_rtnl_message_route_get_src_prefixlen(m, &src_len);
if (r < 0)
return r;
if (src_len != 0)
continue;
r = sd_rtnl_message_read_u32(m, RTA_OIF, &ifi);
if (r < 0)
return r;
if (ifindex > 0 && (int) ifi != ifindex)
continue;
r = sd_rtnl_message_route_get_family(m, &family);
if (r < 0)
return r;
if (af != AF_UNSPEC && af != family)
continue;
if (!GREEDY_REALLOC0(list, n_allocated, n_list + 1))
return -ENOMEM;
a = list + n_list;
switch (family) {
case AF_INET:
r = sd_rtnl_message_read_in_addr(m, RTA_GATEWAY, &a->address.in);
if (r < 0)
continue;
break;
case AF_INET6:
r = sd_rtnl_message_read_in6_addr(m, RTA_GATEWAY, &a->address.in6);
if (r < 0)
continue;
break;
default:
continue;
}
sd_rtnl_message_read_u32(m, RTA_PRIORITY, &a->metric);
a->ifindex = ifi;
a->family = family;
n_list++;
}
if (n_list > 0)
qsort(list, n_list, sizeof(struct local_address), address_compare);
*ret = list;
list = NULL;
return (int) n_list;
}
int local_addresses(sd_rtnl *context, int ifindex, int af, struct local_address **ret) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
_cleanup_free_ struct local_address *list = NULL;
size_t n_list = 0, n_allocated = 0;
sd_rtnl_message *m;
int r;
assert(ret);
if (context)
rtnl = sd_rtnl_ref(context);
else {
r = sd_rtnl_open(&rtnl, 0);
if (r < 0)
return r;
}
r = sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, af);
if (r < 0)
return r;
r = sd_rtnl_call(rtnl, req, 0, &reply);
if (r < 0)
return r;
for (m = reply; m; m = sd_rtnl_message_next(m)) {
struct local_address *a;
unsigned char flags;
uint16_t type;
int ifi, family;
r = sd_rtnl_message_get_errno(m);
if (r < 0)
return r;
r = sd_rtnl_message_get_type(m, &type);
if (r < 0)
return r;
if (type != RTM_NEWADDR)
continue;
r = sd_rtnl_message_addr_get_ifindex(m, &ifi);
if (r < 0)
return r;
if (ifindex > 0 && ifi != ifindex)
continue;
r = sd_rtnl_message_addr_get_family(m, &family);
if (r < 0)
return r;
if (af != AF_UNSPEC && af != family)
continue;
r = sd_rtnl_message_addr_get_flags(m, &flags);
if (r < 0)
return r;
if (flags & IFA_F_DEPRECATED)
continue;
if (!GREEDY_REALLOC0(list, n_allocated, n_list+1))
return -ENOMEM;
a = list + n_list;
r = sd_rtnl_message_addr_get_scope(m, &a->scope);
if (r < 0)
return r;
if (ifindex == 0 && (a->scope == RT_SCOPE_HOST || a->scope == RT_SCOPE_NOWHERE))
continue;
switch (family) {
case AF_INET:
r = sd_rtnl_message_read_in_addr(m, IFA_LOCAL, &a->address.in);
if (r < 0) {
r = sd_rtnl_message_read_in_addr(m, IFA_ADDRESS, &a->address.in);
if (r < 0)
continue;
}
break;
case AF_INET6:
r = sd_rtnl_message_read_in6_addr(m, IFA_LOCAL, &a->address.in6);
if (r < 0) {
r = sd_rtnl_message_read_in6_addr(m, IFA_ADDRESS, &a->address.in6);
if (r < 0)
continue;
}
break;
default:
continue;
}
a->ifindex = ifi;
a->family = family;
n_list++;
};
if (n_list > 0)
qsort(list, n_list, sizeof(struct local_address), address_compare);
*ret = list;
list = NULL;
return (int) n_list;
}
int main(void) {
sd_rtnl *rtnl;
sd_rtnl_message *m;
sd_rtnl_message *r;
void *data;
int if_loopback;
uint16_t type;
unsigned int mtu = 0;
unsigned int *mtu_reply;
test_multiple();
test_route();
test_container();
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(rtnl);
if_loopback = (int) if_nametoindex("lo");
assert(if_loopback > 0);
test_async(if_loopback);
test_pipe(if_loopback);
test_event_loop(if_loopback);
test_link_configure(rtnl, if_loopback);
assert(sd_rtnl_message_link_new(RTM_GETLINK, if_loopback, 0, 0, &m) >= 0);
assert(m);
assert(sd_rtnl_message_get_type(m, &type) >= 0);
assert(type == RTM_GETLINK);
assert(sd_rtnl_message_read(m, &type, &data) == 0);
assert(sd_rtnl_call(rtnl, m, 0, &r) == 1);
assert(sd_rtnl_message_get_type(r, &type) >= 0);
assert(type == RTM_NEWLINK);
assert(sd_rtnl_message_read(m, &type, &data) == 0);
assert((r = sd_rtnl_message_unref(r)) == NULL);
assert(sd_rtnl_call(rtnl, m, -1, &r) == -EPERM);
assert((m = sd_rtnl_message_unref(m)) == NULL);
assert((r = sd_rtnl_message_unref(r)) == NULL);
assert(sd_rtnl_message_link_new(RTM_GETLINK, if_loopback, 0, 0, &m) >= 0);
assert(m);
assert(sd_rtnl_message_append(m, IFLA_MTU, &mtu) >= 0);
assert(sd_rtnl_message_read(m, &type, (void **) &mtu_reply) == 1);
assert(type == IFLA_MTU);
assert(*mtu_reply == 0);
assert(sd_rtnl_message_read(m, &type, &data) == 0);
assert(sd_rtnl_call(rtnl, m, -1, &r) == 1);
while (sd_rtnl_message_read(r, &type, &data) > 0) {
switch (type) {
// case IFLA_MTU:
// assert(*(unsigned int *) data == 65536);
// break;
// case IFLA_QDISC:
// assert(streq((char *) data, "noqueue"));
// break;
case IFLA_IFNAME:
assert(streq((char *) data, "lo"));
break;
}
}
assert(sd_rtnl_flush(rtnl) >= 0);
assert((m = sd_rtnl_message_unref(m)) == NULL);
assert((r = sd_rtnl_message_unref(r)) == NULL);
assert((rtnl = sd_rtnl_unref(rtnl)) == NULL);
return EXIT_SUCCESS;
}
static void test_link_get(sd_rtnl *rtnl, int ifindex) {
sd_rtnl_message *m;
sd_rtnl_message *r;
unsigned int mtu = 1500;
unsigned int *mtu_reply;
void *data;
char *str_data;
uint16_t type;
uint8_t u8_data;
uint32_t u32_data;
struct ether_addr eth_data;
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
assert_se(m);
/* u8 test cases */
assert_se(sd_rtnl_message_append_u8(m, IFLA_CARRIER, 0) >= 0);
assert_se(sd_rtnl_message_append_u8(m, IFLA_OPERSTATE, 0) >= 0);
assert_se(sd_rtnl_message_append_u8(m, IFLA_LINKMODE, 0) >= 0);
/* u32 test cases */
assert_se(sd_rtnl_message_append_u32(m, IFLA_MTU, mtu) >= 0);
assert_se(sd_rtnl_message_append_u32(m, IFLA_GROUP, 0) >= 0);
assert_se(sd_rtnl_message_append_u32(m, IFLA_TXQLEN, 0) >= 0);
assert_se(sd_rtnl_message_append_u32(m, IFLA_NUM_TX_QUEUES, 0) >= 0);
assert_se(sd_rtnl_message_append_u32(m, IFLA_NUM_RX_QUEUES, 0) >= 0);
assert_se(sd_rtnl_call(rtnl, m, -1, &r) == 1);
/* u8 read back */
assert_se(sd_rtnl_message_read(m, &type, &data) == 1);
assert_se(type == IFLA_CARRIER);
assert_se(sd_rtnl_message_read(m, &type, &data) == 1);
assert_se(type == IFLA_OPERSTATE);
assert_se(sd_rtnl_message_read(m, &type, &data) == 1);
assert_se(type == IFLA_LINKMODE);
/* u32 read back */
assert_se(sd_rtnl_message_read(m, &type, (void **) &mtu_reply) == 1);
assert_se(type == IFLA_MTU);
assert_se(*mtu_reply == mtu);
assert_se(sd_rtnl_message_read(m, &type, &data) == 1);
assert_se(type == IFLA_GROUP);
assert_se(sd_rtnl_message_read(m, &type, &data) == 1);
assert_se(type == IFLA_TXQLEN);
assert_se(sd_rtnl_message_read(m, &type, &data) == 1);
assert_se(type == IFLA_NUM_TX_QUEUES);
assert_se(sd_rtnl_message_read(m, &type, &data) == 1);
assert_se(type == IFLA_NUM_RX_QUEUES);
while (sd_rtnl_message_read(r, &type, &data) > 0) {
switch (type) {
// case IFLA_MTU:
// assert_se(*(unsigned int *) data == 65536);
// break;
// case IFLA_QDISC:
// assert_se(streq((char *) data, "noqueue"));
// break;
case IFLA_IFNAME:
assert_se(streq((char *) data, "lo"));
break;
}
}
assert_se(sd_rtnl_message_read_string(r, IFLA_IFNAME, &str_data) == 0);
assert_se(sd_rtnl_message_read_u8(r, IFLA_CARRIER, &u8_data) == 0);
assert_se(sd_rtnl_message_read_u8(r, IFLA_OPERSTATE, &u8_data) == 0);
assert_se(sd_rtnl_message_read_u8(r, IFLA_LINKMODE, &u8_data) == 0);
assert_se(sd_rtnl_message_read_u32(r, IFLA_MTU, &u32_data) == 0);
assert_se(sd_rtnl_message_read_u32(r, IFLA_GROUP, &u32_data) == 0);
assert_se(sd_rtnl_message_read_u32(r, IFLA_TXQLEN, &u32_data) == 0);
assert_se(sd_rtnl_message_read_u32(r, IFLA_NUM_TX_QUEUES, &u32_data) == 0);
assert_se(sd_rtnl_message_read_u32(r, IFLA_NUM_RX_QUEUES, &u32_data) == 0);
assert_se(sd_rtnl_message_read_ether_addr(r, IFLA_ADDRESS, ð_data) == 0);
assert_se(sd_rtnl_flush(rtnl) >= 0);
assert_se((m = sd_rtnl_message_unref(m)) == NULL);
assert_se((r = sd_rtnl_message_unref(r)) == NULL);
}
static int test_pppoe_server(sd_event *e) {
sd_rtnl *rtnl;
sd_rtnl_message *m;
pid_t pid;
int r, client_ifindex, server_ifindex;
r = unshare(CLONE_NEWNET);
if (r < 0 && errno == EPERM)
return EXIT_TEST_SKIP;
assert_se(r >= 0);
assert_se(sd_rtnl_open(&rtnl, 0) >= 0);
assert_se(sd_rtnl_attach_event(rtnl, e, 0) >= 0);
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
assert_se(sd_rtnl_message_append_string(m, IFLA_IFNAME, "pppoe-server") >= 0);
assert_se(sd_rtnl_message_open_container(m, IFLA_LINKINFO) >= 0);
assert_se(sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA, "veth") >= 0);
assert_se(sd_rtnl_message_open_container(m, VETH_INFO_PEER) >= 0);
assert_se(sd_rtnl_message_append_string(m, IFLA_IFNAME, "pppoe-client") >= 0);
assert_se(sd_rtnl_message_close_container(m) >= 0);
assert_se(sd_rtnl_message_close_container(m) >= 0);
assert_se(sd_rtnl_message_close_container(m) >= 0);
assert_se(sd_rtnl_call(rtnl, m, 0, NULL) >= 0);
client_ifindex = (int) if_nametoindex("pppoe-client");
assert_se(client_ifindex > 0);
server_ifindex = (int) if_nametoindex("pppoe-server");
assert_se(server_ifindex > 0);
m = sd_rtnl_message_unref(m);
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_SETLINK, client_ifindex) >= 0);
assert_se(sd_rtnl_message_link_set_flags(m, IFF_UP, IFF_UP) >= 0);
assert_se(sd_rtnl_call(rtnl, m, 0, NULL) >= 0);
m = sd_rtnl_message_unref(m);
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_SETLINK, server_ifindex) >= 0);
assert_se(sd_rtnl_message_link_set_flags(m, IFF_UP, IFF_UP) >= 0);
assert_se(sd_rtnl_call(rtnl, m, 0, NULL) >= 0);
pid = fork();
assert_se(pid >= 0);
if (pid == 0) {
/* let the client send some discover messages before the server is started */
sleep(2);
/* TODO: manage pppoe-server-options */
execlp("pppoe-server", "pppoe-server", "-F",
"-I", "pppoe-server",
"-C", "Test-AC",
"-S", "Service-Default",
"-S", "Service-First-Auxiliary",
"-S", "Service-Second-Auxiliary",
NULL);
assert_not_reached("failed to execute pppoe-server. not installed?");
}
client_run("pppoe-client", e);
assert_se(kill(pid, SIGTERM) >= 0);
assert_se(wait_for_terminate(pid, NULL) >= 0);
assert_se(!sd_rtnl_message_unref(m));
assert_se(!sd_rtnl_unref(rtnl));
return EXIT_SUCCESS;
}
static int get_gateway_description(
sd_rtnl *rtnl,
sd_hwdb *hwdb,
int ifindex,
int family,
union in_addr_union *gateway,
char **gateway_description) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
sd_rtnl_message *m;
int r;
assert(rtnl);
assert(ifindex >= 0);
assert(family == AF_INET || family == AF_INET6);
assert(gateway);
assert(gateway_description);
r = sd_rtnl_message_new_neigh(rtnl, &req, RTM_GETNEIGH, ifindex, family);
if (r < 0)
return r;
r = sd_rtnl_message_request_dump(req, true);
if (r < 0)
return r;
r = sd_rtnl_call(rtnl, req, 0, &reply);
if (r < 0)
return r;
for (m = reply; m; m = sd_rtnl_message_next(m)) {
union in_addr_union gw = {};
struct ether_addr mac = {};
uint16_t type;
int ifi, fam;
r = sd_rtnl_message_get_errno(m);
if (r < 0) {
log_error_errno(r, "got error: %m");
continue;
}
r = sd_rtnl_message_get_type(m, &type);
if (r < 0) {
log_error_errno(r, "could not get type: %m");
continue;
}
if (type != RTM_NEWNEIGH) {
log_error("type is not RTM_NEWNEIGH");
continue;
}
r = sd_rtnl_message_neigh_get_family(m, &fam);
if (r < 0) {
log_error_errno(r, "could not get family: %m");
continue;
}
if (fam != family) {
log_error("family is not correct");
continue;
}
r = sd_rtnl_message_neigh_get_ifindex(m, &ifi);
if (r < 0) {
log_error_errno(r, "could not get ifindex: %m");
continue;
}
if (ifindex > 0 && ifi != ifindex)
continue;
switch (fam) {
case AF_INET:
r = sd_rtnl_message_read_in_addr(m, NDA_DST, &gw.in);
if (r < 0)
continue;
break;
case AF_INET6:
r = sd_rtnl_message_read_in6_addr(m, NDA_DST, &gw.in6);
if (r < 0)
continue;
break;
default:
continue;
}
if (!in_addr_equal(fam, &gw, gateway))
continue;
r = sd_rtnl_message_read_ether_addr(m, NDA_LLADDR, &mac);
if (r < 0)
continue;
r = ieee_oui(hwdb, &mac, gateway_description);
if (r < 0)
continue;
return 0;
}
return -ENODATA;
}
static int list_links(int argc, char *argv[], void *userdata) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
_cleanup_udev_unref_ struct udev *udev = NULL;
_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
_cleanup_free_ LinkInfo *links = NULL;
int r, c, i;
pager_open_if_enabled();
r = sd_rtnl_open(&rtnl, 0);
if (r < 0)
return log_error_errno(r, "Failed to connect to netlink: %m");
udev = udev_new();
if (!udev)
return log_error_errno(errno, "Failed to connect to udev: %m");
r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_rtnl_message_request_dump(req, true);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_rtnl_call(rtnl, req, 0, &reply);
if (r < 0)
return log_error_errno(r, "Failed to enumerate links: %m");
if (arg_legend)
printf("%3s %-16s %-18s %-11s %-10s\n", "IDX", "LINK", "TYPE", "OPERATIONAL", "SETUP");
c = decode_and_sort_links(reply, &links);
if (c < 0)
return rtnl_log_parse_error(c);
for (i = 0; i < c; i++) {
_cleanup_free_ char *setup_state = NULL, *operational_state = NULL;
_cleanup_udev_device_unref_ struct udev_device *d = NULL;
const char *on_color_operational, *off_color_operational,
*on_color_setup, *off_color_setup;
char devid[2 + DECIMAL_STR_MAX(int)];
_cleanup_free_ char *t = NULL;
sd_network_link_get_operational_state(links[i].ifindex, &operational_state);
operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
sd_network_link_get_setup_state(links[i].ifindex, &setup_state);
setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);
sprintf(devid, "n%i", links[i].ifindex);
d = udev_device_new_from_device_id(udev, devid);
link_get_type_string(links[i].iftype, d, &t);
printf("%3i %-16s %-18s %s%-11s%s %s%-10s%s\n",
links[i].ifindex, links[i].name, strna(t),
on_color_operational, strna(operational_state), off_color_operational,
on_color_setup, strna(setup_state), off_color_setup);
}
if (arg_legend)
printf("\n%i links listed.\n", c);
return 0;
}