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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 13:00:47 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 13:00:47 +0000
commit2cb7e0aaedad73b076ea18c6900b0e86c5760d79 (patch)
treeda68ca54bb79f4080079bf0828acda937593a4e1 /src/libsystemd/sd-network/network-util.c
parentInitial commit. (diff)
downloadsystemd-2cb7e0aaedad73b076ea18c6900b0e86c5760d79.tar.xz
systemd-2cb7e0aaedad73b076ea18c6900b0e86c5760d79.zip
Adding upstream version 247.3.upstream/247.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libsystemd/sd-network/network-util.c')
-rw-r--r--src/libsystemd/sd-network/network-util.c105
1 files changed, 105 insertions, 0 deletions
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;
+}