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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "sd-network.h"
#include "alloc-util.h"
#include "network-util.h"
#include "string-table.h"
#include "strv.h"
bool network_is_online(void) {
_cleanup_free_ char *online_state = NULL;
LinkOnlineState state;
int r;
r = sd_network_get_online_state(&online_state);
if (r < 0)
state = _LINK_ONLINE_STATE_INVALID;
else
state = link_online_state_from_string(online_state);
if (state >= LINK_ONLINE_STATE_PARTIAL)
return true;
else if (state < 0) {
_cleanup_free_ char *carrier_state = NULL, *addr_state = NULL;
r = sd_network_get_carrier_state(&carrier_state);
if (r < 0) /* if we don't know anything, we consider the system online */
return true;
r = sd_network_get_address_state(&addr_state);
if (r < 0) /* if we don't know anything, we consider the system online */
return true;
/* we don't know the online state for certain, so make an educated guess */
if (STR_IN_SET(carrier_state, "degraded-carrier", "carrier") &&
STR_IN_SET(addr_state, "routable", "degraded"))
return true;
}
return false;
}
static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = {
[LINK_OPERSTATE_MISSING] = "missing",
[LINK_OPERSTATE_OFF] = "off",
[LINK_OPERSTATE_NO_CARRIER] = "no-carrier",
[LINK_OPERSTATE_DORMANT] = "dormant",
[LINK_OPERSTATE_DEGRADED_CARRIER] = "degraded-carrier",
[LINK_OPERSTATE_CARRIER] = "carrier",
[LINK_OPERSTATE_DEGRADED] = "degraded",
[LINK_OPERSTATE_ENSLAVED] = "enslaved",
[LINK_OPERSTATE_ROUTABLE] = "routable",
};
DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState);
static const char* const link_carrier_state_table[_LINK_CARRIER_STATE_MAX] = {
[LINK_CARRIER_STATE_OFF] = "off",
[LINK_CARRIER_STATE_NO_CARRIER] = "no-carrier",
[LINK_CARRIER_STATE_DORMANT] = "dormant",
[LINK_CARRIER_STATE_DEGRADED_CARRIER] = "degraded-carrier",
[LINK_CARRIER_STATE_CARRIER] = "carrier",
[LINK_CARRIER_STATE_ENSLAVED] = "enslaved",
};
DEFINE_STRING_TABLE_LOOKUP(link_carrier_state, LinkCarrierState);
static const char* const link_required_address_family_table[_ADDRESS_FAMILY_MAX] = {
[ADDRESS_FAMILY_NO] = "any",
[ADDRESS_FAMILY_IPV4] = "ipv4",
[ADDRESS_FAMILY_IPV6] = "ipv6",
[ADDRESS_FAMILY_YES] = "both",
};
DEFINE_STRING_TABLE_LOOKUP(link_required_address_family, AddressFamily);
static const char* const link_address_state_table[_LINK_ADDRESS_STATE_MAX] = {
[LINK_ADDRESS_STATE_OFF] = "off",
[LINK_ADDRESS_STATE_DEGRADED] = "degraded",
[LINK_ADDRESS_STATE_ROUTABLE] = "routable",
};
DEFINE_STRING_TABLE_LOOKUP(link_address_state, LinkAddressState);
static const char *const link_online_state_table[_LINK_ONLINE_STATE_MAX] = {
[LINK_ONLINE_STATE_OFFLINE] = "offline",
[LINK_ONLINE_STATE_PARTIAL] = "partial",
[LINK_ONLINE_STATE_ONLINE] = "online",
};
DEFINE_STRING_TABLE_LOOKUP(link_online_state, LinkOnlineState);
int parse_operational_state_range(const char *str, LinkOperationalStateRange *out) {
LinkOperationalStateRange range = { _LINK_OPERSTATE_INVALID, _LINK_OPERSTATE_INVALID };
_cleanup_free_ const char *min = NULL;
const char *p;
assert(str);
assert(out);
p = strchr(str, ':');
if (p) {
min = strndup(str, p - str);
if (!isempty(p + 1)) {
range.max = link_operstate_from_string(p + 1);
if (range.max < 0)
return -EINVAL;
}
} else
min = strdup(str);
if (!min)
return -ENOMEM;
if (!isempty(min)) {
range.min = link_operstate_from_string(min);
if (range.min < 0)
return -EINVAL;
}
/* Fail on empty strings. */
if (range.min == _LINK_OPERSTATE_INVALID && range.max == _LINK_OPERSTATE_INVALID)
return -EINVAL;
if (range.min == _LINK_OPERSTATE_INVALID)
range.min = LINK_OPERSTATE_MISSING;
if (range.max == _LINK_OPERSTATE_INVALID)
range.max = LINK_OPERSTATE_ROUTABLE;
if (range.min > range.max)
return -EINVAL;
*out = range;
return 0;
}
int network_link_get_operational_state(int ifindex, LinkOperationalState *ret) {
_cleanup_free_ char *str = NULL;
LinkOperationalState s;
int r;
assert(ifindex > 0);
assert(ret);
r = sd_network_link_get_operational_state(ifindex, &str);
if (r < 0)
return r;
s = link_operstate_from_string(str);
if (s < 0)
return s;
*ret = s;
return 0;
}
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