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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <net/if.h>
#include "bus-error.h"
#include "bus-locator.h"
#include "fd-util.h"
#include "format-ifname.h"
#include "netlink-util.h"
#include "networkctl.h"
#include "networkctl-misc.h"
#include "networkctl-util.h"
#include "parse-util.h"
#include "polkit-agent.h"
#include "set.h"
#include "strv.h"
#include "varlink-util.h"
static int link_up_down_send_message(sd_netlink *rtnl, char *command, int index) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(rtnl);
assert(index >= 0);
r = sd_rtnl_message_new_link(rtnl, &req, RTM_SETLINK, index);
if (r < 0)
return rtnl_log_create_error(r);
if (streq(command, "up"))
r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP);
else
r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP);
if (r < 0)
return log_error_errno(r, "Could not set link flags: %m");
r = sd_netlink_call(rtnl, req, 0, NULL);
if (r < 0)
return r;
return 0;
}
int link_up_down(int argc, char *argv[], void *userdata) {
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
_cleanup_set_free_ Set *indexes = NULL;
int index, r;
void *p;
r = sd_netlink_open(&rtnl);
if (r < 0)
return log_error_errno(r, "Failed to connect to netlink: %m");
indexes = set_new(NULL);
if (!indexes)
return log_oom();
for (int i = 1; i < argc; i++) {
index = rtnl_resolve_interface_or_warn(&rtnl, argv[i]);
if (index < 0)
return index;
r = set_put(indexes, INT_TO_PTR(index));
if (r < 0)
return log_oom();
}
SET_FOREACH(p, indexes) {
index = PTR_TO_INT(p);
r = link_up_down_send_message(rtnl, argv[0], index);
if (r < 0)
return log_error_errno(r, "Failed to bring %s interface %s: %m",
argv[0], FORMAT_IFNAME_FULL(index, FORMAT_IFNAME_IFINDEX));
}
return r;
}
static int link_delete_send_message(sd_netlink *rtnl, int index) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(rtnl);
assert(index >= 0);
r = sd_rtnl_message_new_link(rtnl, &req, RTM_DELLINK, index);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_netlink_call(rtnl, req, 0, NULL);
if (r < 0)
return r;
return 0;
}
int link_delete(int argc, char *argv[], void *userdata) {
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
_cleanup_set_free_ Set *indexes = NULL;
int index, r;
void *p;
r = sd_netlink_open(&rtnl);
if (r < 0)
return log_error_errno(r, "Failed to connect to netlink: %m");
indexes = set_new(NULL);
if (!indexes)
return log_oom();
for (int i = 1; i < argc; i++) {
index = rtnl_resolve_interface_or_warn(&rtnl, argv[i]);
if (index < 0)
return index;
r = set_put(indexes, INT_TO_PTR(index));
if (r < 0)
return log_oom();
}
SET_FOREACH(p, indexes) {
index = PTR_TO_INT(p);
r = link_delete_send_message(rtnl, index);
if (r < 0)
return log_error_errno(r, "Failed to delete interface %s: %m",
FORMAT_IFNAME_FULL(index, FORMAT_IFNAME_IFINDEX));
}
return r;
}
static int link_renew_one(sd_bus *bus, int index, const char *name) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
assert(bus);
assert(index >= 0);
assert(name);
r = bus_call_method(bus, bus_network_mgr, "RenewLink", &error, NULL, "i", index);
if (r < 0)
return log_error_errno(r, "Failed to renew dynamic configuration of interface %s: %s",
name, bus_error_message(&error, r));
return 0;
}
int link_renew(int argc, char *argv[], void *userdata) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
int r;
r = acquire_bus(&bus);
if (r < 0)
return r;
(void) polkit_agent_open_if_enabled(BUS_TRANSPORT_LOCAL, arg_ask_password);
r = 0;
for (int i = 1; i < argc; i++) {
int index;
index = rtnl_resolve_interface_or_warn(&rtnl, argv[i]);
if (index < 0)
return index;
RET_GATHER(r, link_renew_one(bus, index, argv[i]));
}
return r;
}
static int link_force_renew_one(sd_bus *bus, int index, const char *name) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
assert(bus);
assert(index >= 0);
assert(name);
r = bus_call_method(bus, bus_network_mgr, "ForceRenewLink", &error, NULL, "i", index);
if (r < 0)
return log_error_errno(r, "Failed to force renew dynamic configuration of interface %s: %s",
name, bus_error_message(&error, r));
return 0;
}
int link_force_renew(int argc, char *argv[], void *userdata) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
int k = 0, r;
r = acquire_bus(&bus);
if (r < 0)
return r;
(void) polkit_agent_open_if_enabled(BUS_TRANSPORT_LOCAL, arg_ask_password);
for (int i = 1; i < argc; i++) {
int index = rtnl_resolve_interface_or_warn(&rtnl, argv[i]);
if (index < 0)
return index;
r = link_force_renew_one(bus, index, argv[i]);
if (r < 0 && k >= 0)
k = r;
}
return k;
}
int verb_reload(int argc, char *argv[], void *userdata) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
r = acquire_bus(&bus);
if (r < 0)
return r;
(void) polkit_agent_open_if_enabled(BUS_TRANSPORT_LOCAL, arg_ask_password);
r = bus_call_method(bus, bus_network_mgr, "Reload", &error, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to reload network settings: %s", bus_error_message(&error, r));
return 0;
}
int verb_reconfigure(int argc, char *argv[], void *userdata) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
_cleanup_set_free_ Set *indexes = NULL;
int index, r;
void *p;
r = acquire_bus(&bus);
if (r < 0)
return r;
(void) polkit_agent_open_if_enabled(BUS_TRANSPORT_LOCAL, arg_ask_password);
indexes = set_new(NULL);
if (!indexes)
return log_oom();
for (int i = 1; i < argc; i++) {
index = rtnl_resolve_interface_or_warn(&rtnl, argv[i]);
if (index < 0)
return index;
r = set_put(indexes, INT_TO_PTR(index));
if (r < 0)
return log_oom();
}
SET_FOREACH(p, indexes) {
index = PTR_TO_INT(p);
r = bus_call_method(bus, bus_network_mgr, "ReconfigureLink", &error, NULL, "i", index);
if (r < 0)
return log_error_errno(r, "Failed to reconfigure network interface %s: %s",
FORMAT_IFNAME_FULL(index, FORMAT_IFNAME_IFINDEX),
bus_error_message(&error, r));
}
return 0;
}
int verb_persistent_storage(int argc, char *argv[], void *userdata) {
_cleanup_(sd_varlink_flush_close_unrefp) sd_varlink *vl = NULL;
bool ready;
int r;
r = parse_boolean(argv[1]);
if (r < 0)
return log_error_errno(r, "Failed to parse argument: %s", argv[1]);
ready = r;
r = varlink_connect_networkd(&vl);
if (r < 0)
return r;
if (ready) {
_cleanup_close_ int fd = -EBADF;
fd = open("/var/lib/systemd/network/", O_CLOEXEC | O_DIRECTORY);
if (fd < 0)
return log_error_errno(errno, "Failed to open /var/lib/systemd/network/: %m");
r = sd_varlink_push_fd(vl, fd);
if (r < 0)
return log_error_errno(r, "Failed to push file descriptor of /var/lib/systemd/network/ into varlink: %m");
TAKE_FD(fd);
}
return varlink_callbo_and_log(
vl,
"io.systemd.Network.SetPersistentStorage",
/* reply= */ NULL,
SD_JSON_BUILD_PAIR_BOOLEAN("Ready", ready));
}
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