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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/network/networkd-util.c
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/network/networkd-util.c')
-rw-r--r--src/network/networkd-util.c257
1 files changed, 257 insertions, 0 deletions
diff --git a/src/network/networkd-util.c b/src/network/networkd-util.c
new file mode 100644
index 0000000..33352ba
--- /dev/null
+++ b/src/network/networkd-util.c
@@ -0,0 +1,257 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "condition.h"
+#include "conf-parser.h"
+#include "escape.h"
+#include "logarithm.h"
+#include "networkd-link.h"
+#include "networkd-util.h"
+#include "parse-util.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "web-util.h"
+
+/* This is used in log messages, and never used in parsing settings. So, upper cases are OK. */
+static const char * const network_config_source_table[_NETWORK_CONFIG_SOURCE_MAX] = {
+ [NETWORK_CONFIG_SOURCE_FOREIGN] = "foreign",
+ [NETWORK_CONFIG_SOURCE_STATIC] = "static",
+ [NETWORK_CONFIG_SOURCE_IPV4LL] = "IPv4LL",
+ [NETWORK_CONFIG_SOURCE_DHCP4] = "DHCPv4",
+ [NETWORK_CONFIG_SOURCE_DHCP6] = "DHCPv6",
+ [NETWORK_CONFIG_SOURCE_DHCP_PD] = "DHCP-PD",
+ [NETWORK_CONFIG_SOURCE_NDISC] = "NDisc",
+ [NETWORK_CONFIG_SOURCE_RUNTIME] = "runtime",
+};
+
+DEFINE_STRING_TABLE_LOOKUP_TO_STRING(network_config_source, NetworkConfigSource);
+
+int network_config_state_to_string_alloc(NetworkConfigState s, char **ret) {
+ static const char* states[] = {
+ [LOG2U(NETWORK_CONFIG_STATE_REQUESTING)] = "requesting",
+ [LOG2U(NETWORK_CONFIG_STATE_CONFIGURING)] = "configuring",
+ [LOG2U(NETWORK_CONFIG_STATE_CONFIGURED)] = "configured",
+ [LOG2U(NETWORK_CONFIG_STATE_MARKED)] = "marked",
+ [LOG2U(NETWORK_CONFIG_STATE_REMOVING)] = "removing",
+ };
+ _cleanup_free_ char *buf = NULL;
+
+ assert(ret);
+
+ for (size_t i = 0; i < ELEMENTSOF(states); i++)
+ if (FLAGS_SET(s, 1 << i)) {
+ assert(states[i]);
+
+ if (!strextend_with_separator(&buf, ",", states[i]))
+ return -ENOMEM;
+ }
+
+ *ret = TAKE_PTR(buf);
+ return 0;
+}
+
+static const char * const address_family_table[_ADDRESS_FAMILY_MAX] = {
+ [ADDRESS_FAMILY_NO] = "no",
+ [ADDRESS_FAMILY_YES] = "yes",
+ [ADDRESS_FAMILY_IPV4] = "ipv4",
+ [ADDRESS_FAMILY_IPV6] = "ipv6",
+};
+
+static const char * const routing_policy_rule_address_family_table[_ADDRESS_FAMILY_MAX] = {
+ [ADDRESS_FAMILY_YES] = "both",
+ [ADDRESS_FAMILY_IPV4] = "ipv4",
+ [ADDRESS_FAMILY_IPV6] = "ipv6",
+};
+
+static const char * const nexthop_address_family_table[_ADDRESS_FAMILY_MAX] = {
+ [ADDRESS_FAMILY_IPV4] = "ipv4",
+ [ADDRESS_FAMILY_IPV6] = "ipv6",
+};
+
+static const char * const duplicate_address_detection_address_family_table[_ADDRESS_FAMILY_MAX] = {
+ [ADDRESS_FAMILY_NO] = "none",
+ [ADDRESS_FAMILY_YES] = "both",
+ [ADDRESS_FAMILY_IPV4] = "ipv4",
+ [ADDRESS_FAMILY_IPV6] = "ipv6",
+};
+
+static const char * const dhcp_deprecated_address_family_table[_ADDRESS_FAMILY_MAX] = {
+ [ADDRESS_FAMILY_NO] = "none",
+ [ADDRESS_FAMILY_YES] = "both",
+ [ADDRESS_FAMILY_IPV4] = "v4",
+ [ADDRESS_FAMILY_IPV6] = "v6",
+};
+
+static const char * const ip_masquerade_address_family_table[_ADDRESS_FAMILY_MAX] = {
+ [ADDRESS_FAMILY_NO] = "no",
+ [ADDRESS_FAMILY_YES] = "both",
+ [ADDRESS_FAMILY_IPV4] = "ipv4",
+ [ADDRESS_FAMILY_IPV6] = "ipv6",
+};
+
+static const char * const dhcp_lease_server_type_table[_SD_DHCP_LEASE_SERVER_TYPE_MAX] = {
+ [SD_DHCP_LEASE_DNS] = "DNS servers",
+ [SD_DHCP_LEASE_NTP] = "NTP servers",
+ [SD_DHCP_LEASE_SIP] = "SIP servers",
+ [SD_DHCP_LEASE_POP3] = "POP3 servers",
+ [SD_DHCP_LEASE_SMTP] = "SMTP servers",
+ [SD_DHCP_LEASE_LPR] = "LPR servers",
+};
+
+DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(address_family, AddressFamily, ADDRESS_FAMILY_YES);
+
+AddressFamily link_local_address_family_from_string(const char *s) {
+ if (streq_ptr(s, "fallback")) /* compat name */
+ return ADDRESS_FAMILY_YES;
+ if (streq_ptr(s, "fallback-ipv4")) /* compat name */
+ return ADDRESS_FAMILY_IPV4;
+ return address_family_from_string(s);
+}
+
+DEFINE_STRING_TABLE_LOOKUP(routing_policy_rule_address_family, AddressFamily);
+DEFINE_STRING_TABLE_LOOKUP(nexthop_address_family, AddressFamily);
+DEFINE_STRING_TABLE_LOOKUP(duplicate_address_detection_address_family, AddressFamily);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_link_local_address_family, link_local_address_family,
+ AddressFamily, "Failed to parse option");
+DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(dhcp_deprecated_address_family, AddressFamily);
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(ip_masquerade_address_family, AddressFamily);
+DEFINE_STRING_TABLE_LOOKUP(dhcp_lease_server_type, sd_dhcp_lease_server_type_t);
+
+int config_parse_address_family_with_kernel(
+ const char* unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ AddressFamily *fwd = data, s;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ /* This function is mostly obsolete now. It simply redirects
+ * "kernel" to "no". In older networkd versions we used to
+ * distinguish IPForward=off from IPForward=kernel, where the
+ * former would explicitly turn off forwarding while the
+ * latter would simply not touch the setting. But that logic
+ * is gone, hence silently accept the old setting, but turn it
+ * to "no". */
+
+ s = address_family_from_string(rvalue);
+ if (s < 0) {
+ if (streq(rvalue, "kernel"))
+ s = ADDRESS_FAMILY_NO;
+ else {
+ log_syntax(unit, LOG_WARNING, filename, line, 0, "Failed to parse IPForward= option, ignoring: %s", rvalue);
+ return 0;
+ }
+ }
+
+ *fwd = s;
+
+ return 0;
+}
+
+int config_parse_ip_masquerade(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ AddressFamily a, *ret = data;
+ int r;
+
+ if (isempty(rvalue)) {
+ *ret = ADDRESS_FAMILY_NO;
+ return 0;
+ }
+
+ r = parse_boolean(rvalue);
+ if (r >= 0) {
+ if (r)
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "IPMasquerade=%s is deprecated, and it is handled as \"ipv4\" instead of \"both\". "
+ "Please use \"ipv4\" or \"both\".",
+ rvalue);
+
+ *ret = r ? ADDRESS_FAMILY_IPV4 : ADDRESS_FAMILY_NO;
+ return 0;
+ }
+
+ a = ip_masquerade_address_family_from_string(rvalue);
+ if (a < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, a,
+ "Failed to parse IPMasquerade= setting, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ *ret = a;
+ return 0;
+}
+
+int config_parse_mud_url(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_free_ char *unescaped = NULL;
+ char **url = ASSERT_PTR(data);
+ ssize_t l;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ *url = mfree(*url);
+ return 0;
+ }
+
+ l = cunescape(rvalue, 0, &unescaped);
+ if (l < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, l,
+ "Failed to unescape MUD URL, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (l > UINT8_MAX || !http_url_is_valid(unescaped)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Invalid MUD URL, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ return free_and_replace(*url, unescaped);
+}
+
+int log_link_message_full_errno(Link *link, sd_netlink_message *m, int level, int err, const char *msg) {
+ const char *err_msg = NULL;
+
+ /* link may be NULL. */
+
+ (void) sd_netlink_message_read_string(m, NLMSGERR_ATTR_MSG, &err_msg);
+ return log_link_full_errno(link, level, err,
+ "%s: %s%s%s%m",
+ msg,
+ strempty(err_msg),
+ err_msg && !endswith(err_msg, ".") ? "." : "",
+ err_msg ? " " : "");
+}