This source file includes following definitions.
- pager_open_if_enabled
- link_get_type_string
- link_info_compare
- decode_and_sort_links
- operational_state_to_color
- setup_state_to_color
- list_links
- dump_addresses
- dump_list
- link_status_one
- link_status
- help
- parse_argv
- networkctl_main
- main
#include <stdbool.h>
#include <getopt.h>
#include "sd-network.h"
#include "sd-rtnl.h"
#include "libudev.h"
#include "build.h"
#include "util.h"
#include "pager.h"
#include "rtnl-util.h"
#include "udev-util.h"
#include "arphrd-list.h"
#include "local-addresses.h"
#include "socket-util.h"
static bool arg_no_pager = false;
static bool arg_legend = true;
static bool arg_all = false;
static void pager_open_if_enabled(void) {
if (arg_no_pager)
return;
pager_open(false);
}
static int link_get_type_string(int iftype, struct udev_device *d, char **ret) {
const char *t;
char *p;
if (iftype == ARPHRD_ETHER && d) {
const char *devtype, *id = NULL;
devtype = udev_device_get_devtype(d);
if (streq_ptr(devtype, "wlan"))
id = "wlan";
else if (streq_ptr(devtype, "wwan"))
id = "wwan";
if (id) {
p = strdup(id);
if (!p)
return -ENOMEM;
*ret = p;
return 1;
}
}
t = arphrd_to_name(iftype);
if (!t) {
*ret = NULL;
return 0;
}
p = strdup(t);
if (!p)
return -ENOMEM;
ascii_strlower(p);
*ret = p;
return 0;
}
typedef struct LinkInfo {
const char *name;
int ifindex;
unsigned iftype;
} LinkInfo;
static int link_info_compare(const void *a, const void *b) {
const LinkInfo *x = a, *y = b;
return x->ifindex - y->ifindex;
}
static int decode_and_sort_links(sd_rtnl_message *m, LinkInfo **ret) {
_cleanup_free_ LinkInfo *links = NULL;
size_t size = 0, c = 0;
sd_rtnl_message *i;
int r;
for (i = m; i; i = sd_rtnl_message_next(i)) {
const char *name;
unsigned iftype;
uint16_t type;
int ifindex;
r = sd_rtnl_message_get_type(i, &type);
if (r < 0)
return r;
if (type != RTM_NEWLINK)
continue;
r = sd_rtnl_message_link_get_ifindex(i, &ifindex);
if (r < 0)
return r;
r = sd_rtnl_message_read_string(i, IFLA_IFNAME, &name);
if (r < 0)
return r;
r = sd_rtnl_message_link_get_type(i, &iftype);
if (r < 0)
return r;
if (!GREEDY_REALLOC(links, size, c+1))
return -ENOMEM;
links[c].name = name;
links[c].ifindex = ifindex;
links[c].iftype = iftype;
c++;
}
qsort_safe(links, c, sizeof(LinkInfo), link_info_compare);
*ret = links;
links = NULL;
return (int) c;
}
static void operational_state_to_color(const char *state, const char **on, const char **off) {
assert(on);
assert(off);
if (streq_ptr(state, "routable")) {
*on = ansi_highlight_green();
*off = ansi_highlight_off();
} else if (streq_ptr(state, "degraded")) {
*on = ansi_highlight_yellow();
*off = ansi_highlight_off();
} else
*on = *off = "";
}
static void setup_state_to_color(const char *state, const char **on, const char **off) {
assert(on);
assert(off);
if (streq_ptr(state, "configured")) {
*on = ansi_highlight_green();
*off = ansi_highlight_off();
} else if (streq_ptr(state, "configuring")) {
*on = ansi_highlight_yellow();
*off = ansi_highlight_off();
} else if (streq_ptr(state, "failed") || streq_ptr(state, "linger")) {
*on = ansi_highlight_red();
*off = ansi_highlight_off();
} else
*on = *off = "";
}
static int list_links(char **args, unsigned n) {
_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) {
log_error("Failed to connect to netlink: %s", strerror(-r));
return r;
}
udev = udev_new();
if (!udev) {
log_error("Failed to connect to udev: %m");
return -errno;
}
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) {
log_error("Failed to enumerate links: %s", strerror(-r));
return r;
}
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;
}
static int dump_addresses(sd_rtnl *rtnl, const char *prefix, int ifindex) {
_cleanup_free_ struct local_address *local = NULL;
int r, n, i;
n = local_addresses(rtnl, ifindex, &local);
if (n < 0)
return n;
for (i = 0; i < n; i++) {
_cleanup_free_ char *pretty = NULL;
r = in_addr_to_string(local[i].family, &local[i].address, &pretty);
if (r < 0)
return r;
printf("%*s%s\n",
(int) strlen(prefix),
i == 0 ? prefix : "",
pretty);
}
return 0;
}
static void dump_list(const char *prefix, char **l) {
char **i;
STRV_FOREACH(i, l) {
printf("%*s%s\n",
(int) strlen(prefix),
i == l ? prefix : "",
*i);
}
}
static int link_status_one(sd_rtnl *rtnl, struct udev *udev, const char *name) {
_cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **domains = NULL;
_cleanup_free_ char *setup_state = NULL, *operational_state = NULL;
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
_cleanup_udev_device_unref_ struct udev_device *d = NULL;
char devid[2 + DECIMAL_STR_MAX(int)];
_cleanup_free_ char *t = NULL, *network = NULL;
const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL, *link = NULL;
const char *on_color_operational, *off_color_operational,
*on_color_setup, *off_color_setup;
struct ether_addr e;
unsigned iftype;
int r, ifindex;
bool have_mac;
uint32_t mtu;
assert(rtnl);
assert(udev);
assert(name);
if (safe_atoi(name, &ifindex) >= 0 && ifindex > 0)
r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, ifindex);
else {
r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_rtnl_message_append_string(req, IFLA_IFNAME, name);
}
if (r < 0)
return rtnl_log_create_error(r);
r = sd_rtnl_call(rtnl, req, 0, &reply);
if (r < 0) {
log_error("Failed to query link: %s", strerror(-r));
return r;
}
r = sd_rtnl_message_link_get_ifindex(reply, &ifindex);
if (r < 0)
return rtnl_log_parse_error(r);
r = sd_rtnl_message_read_string(reply, IFLA_IFNAME, &name);
if (r < 0)
return rtnl_log_parse_error(r);
r = sd_rtnl_message_link_get_type(reply, &iftype);
if (r < 0)
return rtnl_log_parse_error(r);
have_mac = sd_rtnl_message_read_ether_addr(reply, IFLA_ADDRESS, &e) >= 0;
if (have_mac) {
const uint8_t *p;
bool all_zeroes = true;
for (p = (uint8_t*) &e; p < (uint8_t*) &e + sizeof(e); p++)
if (*p != 0) {
all_zeroes = false;
break;
}
if (all_zeroes)
have_mac = false;
}
sd_rtnl_message_read_u32(reply, IFLA_MTU, &mtu);
sd_network_link_get_operational_state(ifindex, &operational_state);
operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
sd_network_link_get_setup_state(ifindex, &setup_state);
setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);
sd_network_link_get_dns(ifindex, &dns);
sd_network_link_get_ntp(ifindex, &ntp);
sd_network_link_get_domains(ifindex, &domains);
r = sd_network_link_get_wildcard_domain(ifindex);
if (r > 0) {
char *wildcard;
wildcard = strdup("*");
if (!wildcard)
return log_oom();
if (strv_consume(&domains, wildcard) < 0)
return log_oom();
}
sprintf(devid, "n%i", ifindex);
d = udev_device_new_from_device_id(udev, devid);
link_get_type_string(iftype, d, &t);
if (d) {
link = udev_device_get_property_value(d, "ID_NET_LINK_FILE");
driver = udev_device_get_property_value(d, "ID_NET_DRIVER");
path = udev_device_get_property_value(d, "ID_PATH");
vendor = udev_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE");
if (!vendor)
vendor = udev_device_get_property_value(d, "ID_VENDOR");
model = udev_device_get_property_value(d, "ID_MODEL_FROM_DATABASE");
if (!model)
model = udev_device_get_property_value(d, "ID_MODEL");
}
sd_network_link_get_network_file(ifindex, &network);
printf("%s%s%s %i: %s\n", on_color_operational, draw_special_char(DRAW_BLACK_CIRCLE), off_color_operational, ifindex, name);
printf(" Link File: %s\n"
"Network File: %s\n"
" Type: %s\n"
" State: %s%s%s (%s%s%s)\n",
strna(link),
strna(network),
strna(t),
on_color_operational, strna(operational_state), off_color_operational,
on_color_setup, strna(setup_state), off_color_setup);
if (path)
printf(" Path: %s\n", path);
if (driver)
printf(" Driver: %s\n", driver);
if (vendor)
printf(" Vendor: %s\n", vendor);
if (model)
printf(" Model: %s\n", model);
if (have_mac) {
char ea[ETHER_ADDR_TO_STRING_MAX];
printf(" HW Address: %s\n", ether_addr_to_string(&e, ea));
}
if (mtu > 0)
printf(" MTU: %u\n", mtu);
dump_addresses(rtnl, " Address: ", ifindex);
if (!strv_isempty(dns))
dump_list(" DNS: ", dns);
if (!strv_isempty(domains))
dump_list(" Domain: ", domains);
if (!strv_isempty(ntp))
dump_list(" NTP: ", ntp);
return 0;
}
static int link_status(char **args, unsigned n) {
_cleanup_udev_unref_ struct udev *udev = NULL;
_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
char **name;
int r;
r = sd_rtnl_open(&rtnl, 0);
if (r < 0) {
log_error("Failed to connect to netlink: %s", strerror(-r));
return r;
}
udev = udev_new();
if (!udev) {
log_error("Failed to connect to udev: %m");
return -errno;
}
if (n <= 1 && !arg_all) {
_cleanup_free_ char *operational_state = NULL;
_cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **domains = NULL;
_cleanup_free_ struct local_address *addresses = NULL;
const char *on_color_operational, *off_color_operational;
int i, c;
sd_network_get_operational_state(&operational_state);
operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
printf(" State: %s%s%s\n", on_color_operational, strna(operational_state), off_color_operational);
c = local_addresses(rtnl, 0, &addresses);
for (i = 0; i < c; i++) {
_cleanup_free_ char *pretty = NULL;
r = in_addr_to_string(addresses[i].family, &addresses[i].address, &pretty);
if (r < 0)
return log_oom();
printf("%13s %s\n",
i > 0 ? "" : "Address:", pretty);
}
sd_network_get_dns(&dns);
if (!strv_isempty(dns))
dump_list(" DNS: ", dns);
sd_network_get_domains(&domains);
if (!strv_isempty(domains))
dump_list(" Domain: ", domains);
sd_network_get_ntp(&ntp);
if (!strv_isempty(ntp))
dump_list(" NTP: ", ntp);
return 0;
}
pager_open_if_enabled();
if (arg_all) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
_cleanup_free_ LinkInfo *links = NULL;
int c, i;
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) {
log_error("Failed to enumerate links: %s", strerror(-r));
return r;
}
c = decode_and_sort_links(reply, &links);
if (c < 0)
return rtnl_log_parse_error(c);
for (i = 0; i < c; i++) {
if (i > 0)
fputc('\n', stdout);
link_status_one(rtnl, udev, links[i].name);
}
}
STRV_FOREACH(name, args + 1) {
if (name != args+1)
fputc('\n', stdout);
link_status_one(rtnl, udev, *name);
}
return 0;
}
static void help(void) {
printf("%s [OPTIONS...]\n\n"
"Query and control the networking subsystem.\n\n"
" -h --help Show this help\n"
" --version Show package version\n"
" --no-pager Do not pipe output into a pager\n"
" --no-legend Do not show the headers and footers\n"
" -a --all Show status for all links\n\n"
"Commands:\n"
" list List links\n"
" status LINK Show link status\n"
, program_invocation_short_name);
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_NO_PAGER,
ARG_NO_LEGEND,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{ "no-legend", no_argument, NULL, ARG_NO_LEGEND },
{ "all", no_argument, NULL, 'a' },
{}
};
int c;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "ha", options, NULL)) >= 0) {
switch (c) {
case 'h':
help();
return 0;
case ARG_VERSION:
puts(PACKAGE_STRING);
puts(SYSTEMD_FEATURES);
return 0;
case ARG_NO_PAGER:
arg_no_pager = true;
break;
case ARG_NO_LEGEND:
arg_legend = false;
break;
case 'a':
arg_all = true;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
}
return 1;
}
static int networkctl_main(int argc, char *argv[]) {
static const struct {
const char* verb;
const enum {
MORE,
LESS,
EQUAL
} argc_cmp;
const int argc;
int (* const dispatch)(char **args, unsigned n);
} verbs[] = {
{ "list", LESS, 1, list_links },
{ "status", MORE, 1, link_status },
};
int left;
unsigned i;
assert(argc >= 0);
assert(argv);
left = argc - optind;
if (left <= 0)
i = 0;
else {
if (streq(argv[optind], "help")) {
help();
return 0;
}
for (i = 0; i < ELEMENTSOF(verbs); i++)
if (streq(argv[optind], verbs[i].verb))
break;
if (i >= ELEMENTSOF(verbs)) {
log_error("Unknown operation %s", argv[optind]);
return -EINVAL;
}
}
switch (verbs[i].argc_cmp) {
case EQUAL:
if (left != verbs[i].argc) {
log_error("Invalid number of arguments.");
return -EINVAL;
}
break;
case MORE:
if (left < verbs[i].argc) {
log_error("Too few arguments.");
return -EINVAL;
}
break;
case LESS:
if (left > verbs[i].argc) {
log_error("Too many arguments.");
return -EINVAL;
}
break;
default:
assert_not_reached("Unknown comparison operator.");
}
return verbs[i].dispatch(argv + optind, left);
}
int main(int argc, char* argv[]) {
int r;
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
goto finish;
r = networkctl_main(argc, argv);
finish:
pager_close();
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}