Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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 ? " " : "");
+}