From 2cb7e0aaedad73b076ea18c6900b0e86c5760d79 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 15:00:47 +0200 Subject: Adding upstream version 247.3. Signed-off-by: Daniel Baumann --- src/libsystemd/sd-network/network-util.c | 105 +++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 src/libsystemd/sd-network/network-util.c (limited to 'src/libsystemd/sd-network/network-util.c') diff --git a/src/libsystemd/sd-network/network-util.c b/src/libsystemd/sd-network/network-util.c new file mode 100644 index 0000000..7753431 --- /dev/null +++ b/src/libsystemd/sd-network/network-util.c @@ -0,0 +1,105 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "alloc-util.h" +#include "fd-util.h" +#include "network-util.h" +#include "string-table.h" +#include "strv.h" + +bool network_is_online(void) { + _cleanup_free_ char *carrier_state = NULL, *addr_state = NULL; + int r; + + 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; + + 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_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); + +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; +} -- cgit v1.2.3