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systemd/src/network/networkd-routing-policy-rule.c

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <net/if.h>
#include <linux/fib_rules.h>
#include "af-list.h"
#include "alloc-util.h"
#include "conf-parser.h"
#include "fileio.h"
#include "format-util.h"
#include "ip-protocol-list.h"
#include "netlink-util.h"
#include "networkd-manager.h"
#include "networkd-routing-policy-rule.h"
#include "networkd-util.h"
#include "parse-util.h"
#include "socket-util.h"
#include "string-table.h"
#include "string-util.h"
#include "strv.h"
#include "user-util.h"
static const char *const fr_act_type_table[__FR_ACT_MAX] = {
[FR_ACT_BLACKHOLE] = "blackhole",
[FR_ACT_UNREACHABLE] = "unreachable",
[FR_ACT_PROHIBIT] = "prohibit",
};
assert_cc(__FR_ACT_MAX <= UINT8_MAX);
DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(fr_act_type, int);
RoutingPolicyRule *routing_policy_rule_free(RoutingPolicyRule *rule) {
if (!rule)
return NULL;
if (rule->network) {
assert(rule->section);
hashmap_remove(rule->network->rules_by_section, rule->section);
}
if (rule->manager) {
if (set_get(rule->manager->rules, rule) == rule)
set_remove(rule->manager->rules, rule);
if (set_get(rule->manager->rules_foreign, rule) == rule)
set_remove(rule->manager->rules_foreign, rule);
}
network_config_section_free(rule->section);
free(rule->iif);
free(rule->oif);
return mfree(rule);
}
DEFINE_NETWORK_SECTION_FUNCTIONS(RoutingPolicyRule, routing_policy_rule_free);
static int routing_policy_rule_new(RoutingPolicyRule **ret) {
RoutingPolicyRule *rule;
rule = new(RoutingPolicyRule, 1);
if (!rule)
return -ENOMEM;
*rule = (RoutingPolicyRule) {
.table = RT_TABLE_MAIN,
.uid_range.start = UID_INVALID,
.uid_range.end = UID_INVALID,
.suppress_prefixlen = -1,
.type = FR_ACT_TO_TBL,
};
*ret = rule;
return 0;
}
static int routing_policy_rule_new_static(Network *network, const char *filename, unsigned section_line, RoutingPolicyRule **ret) {
_cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL;
_cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
int r;
assert(network);
assert(ret);
assert(filename);
assert(section_line > 0);
r = network_config_section_new(filename, section_line, &n);
if (r < 0)
return r;
rule = hashmap_get(network->rules_by_section, n);
if (rule) {
*ret = TAKE_PTR(rule);
return 0;
}
r = routing_policy_rule_new(&rule);
if (r < 0)
return r;
rule->network = network;
rule->section = TAKE_PTR(n);
r = hashmap_ensure_allocated(&network->rules_by_section, &network_config_hash_ops);
if (r < 0)
return r;
r = hashmap_put(network->rules_by_section, rule->section, rule);
if (r < 0)
return r;
*ret = TAKE_PTR(rule);
return 0;
}
static int routing_policy_rule_copy(RoutingPolicyRule *dest, RoutingPolicyRule *src) {
_cleanup_free_ char *iif = NULL, *oif = NULL;
assert(dest);
assert(src);
if (src->iif) {
iif = strdup(src->iif);
if (!iif)
return -ENOMEM;
}
if (src->oif) {
oif = strdup(src->oif);
if (!oif)
return -ENOMEM;
}
dest->family = src->family;
dest->from = src->from;
dest->from_prefixlen = src->from_prefixlen;
dest->to = src->to;
dest->to_prefixlen = src->to_prefixlen;
dest->invert_rule = src->invert_rule;
dest->tos = src->tos;
dest->type = src->type;
dest->fwmark = src->fwmark;
dest->fwmask = src->fwmask;
dest->priority = src->priority;
dest->table = src->table;
dest->iif = TAKE_PTR(iif);
dest->oif = TAKE_PTR(oif);
dest->protocol = src->protocol;
dest->sport = src->sport;
dest->dport = src->dport;
dest->uid_range = src->uid_range;
dest->suppress_prefixlen = src->suppress_prefixlen;
return 0;
}
static void routing_policy_rule_hash_func(const RoutingPolicyRule *rule, struct siphash *state) {
assert(rule);
siphash24_compress(&rule->family, sizeof(rule->family), state);
switch (rule->family) {
case AF_INET:
case AF_INET6:
siphash24_compress(&rule->from, FAMILY_ADDRESS_SIZE(rule->family), state);
siphash24_compress(&rule->from_prefixlen, sizeof(rule->from_prefixlen), state);
siphash24_compress(&rule->to, FAMILY_ADDRESS_SIZE(rule->family), state);
siphash24_compress(&rule->to_prefixlen, sizeof(rule->to_prefixlen), state);
siphash24_compress_boolean(rule->invert_rule, state);
siphash24_compress(&rule->tos, sizeof(rule->tos), state);
siphash24_compress(&rule->type, sizeof(rule->type), state);
siphash24_compress(&rule->fwmark, sizeof(rule->fwmark), state);
siphash24_compress(&rule->fwmask, sizeof(rule->fwmask), state);
siphash24_compress(&rule->priority, sizeof(rule->priority), state);
siphash24_compress(&rule->table, sizeof(rule->table), state);
siphash24_compress(&rule->suppress_prefixlen, sizeof(rule->suppress_prefixlen), state);
siphash24_compress(&rule->protocol, sizeof(rule->protocol), state);
siphash24_compress(&rule->sport, sizeof(rule->sport), state);
siphash24_compress(&rule->dport, sizeof(rule->dport), state);
siphash24_compress(&rule->uid_range, sizeof(rule->uid_range), state);
siphash24_compress_string(rule->iif, state);
siphash24_compress_string(rule->oif, state);
break;
default:
/* treat any other address family as AF_UNSPEC */
break;
}
}
static int routing_policy_rule_compare_func(const RoutingPolicyRule *a, const RoutingPolicyRule *b) {
int r;
r = CMP(a->family, b->family);
if (r != 0)
return r;
switch (a->family) {
case AF_INET:
case AF_INET6:
r = CMP(a->from_prefixlen, b->from_prefixlen);
if (r != 0)
return r;
r = memcmp(&a->from, &b->from, FAMILY_ADDRESS_SIZE(a->family));
if (r != 0)
return r;
r = CMP(a->to_prefixlen, b->to_prefixlen);
if (r != 0)
return r;
r = memcmp(&a->to, &b->to, FAMILY_ADDRESS_SIZE(a->family));
if (r != 0)
return r;
r = CMP(a->invert_rule, b->invert_rule);
if (r != 0)
return r;
r = CMP(a->tos, b->tos);
if (r != 0)
return r;
r = CMP(a->type, b->type);
if (r != 0)
return r;
r = CMP(a->fwmark, b->fwmark);
if (r != 0)
return r;
r = CMP(a->fwmask, b->fwmask);
if (r != 0)
return r;
r = CMP(a->priority, b->priority);
if (r != 0)
return r;
r = CMP(a->table, b->table);
if (r != 0)
return r;
r = CMP(a->suppress_prefixlen, b->suppress_prefixlen);
if (r != 0)
return r;
r = CMP(a->protocol, b->protocol);
if (r != 0)
return r;
r = memcmp(&a->sport, &b->sport, sizeof(a->sport));
if (r != 0)
return r;
r = memcmp(&a->dport, &b->dport, sizeof(a->dport));
if (r != 0)
return r;
r = memcmp(&a->uid_range, &b->uid_range, sizeof(a->uid_range));
if (r != 0)
return r;
r = strcmp_ptr(a->iif, b->iif);
if (r != 0)
return r;
r = strcmp_ptr(a->oif, b->oif);
if (r != 0)
return r;
return 0;
default:
/* treat any other address family as AF_UNSPEC */
return 0;
}
}
static bool routing_policy_rule_equal(const RoutingPolicyRule *rule1, const RoutingPolicyRule *rule2) {
if (rule1 == rule2)
return true;
if (!rule1 || !rule2)
return false;
return routing_policy_rule_compare_func(rule1, rule2) == 0;
}
DEFINE_PRIVATE_HASH_OPS_WITH_KEY_DESTRUCTOR(
routing_policy_rule_hash_ops,
RoutingPolicyRule,
routing_policy_rule_hash_func,
routing_policy_rule_compare_func,
routing_policy_rule_free);
static int routing_policy_rule_get(Manager *m, RoutingPolicyRule *rule, RoutingPolicyRule **ret) {
RoutingPolicyRule *existing;
assert(m);
existing = set_get(m->rules, rule);
if (existing) {
if (ret)
*ret = existing;
return 1;
}
existing = set_get(m->rules_foreign, rule);
if (existing) {
if (ret)
*ret = existing;
return 0;
}
return -ENOENT;
}
static int routing_policy_rule_add_internal(Manager *m, Set **rules, RoutingPolicyRule *in, int family, RoutingPolicyRule **ret) {
_cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL;
int r;
assert(m);
assert(rules);
assert(in);
assert(IN_SET(family, AF_INET, AF_INET6));
assert(in->family == AF_UNSPEC || in->family == family);
r = routing_policy_rule_new(&rule);
if (r < 0)
return r;
rule->manager = m;
r = routing_policy_rule_copy(rule, in);
if (r < 0)
return r;
rule->family = family;
r = set_ensure_put(rules, &routing_policy_rule_hash_ops, rule);
if (r < 0)
return r;
if (r == 0)
return -EEXIST;
if (ret)
*ret = rule;
TAKE_PTR(rule);
return 0;
}
static int routing_policy_rule_add(Manager *m, RoutingPolicyRule *rule, int family, RoutingPolicyRule **ret) {
return routing_policy_rule_add_internal(m, &m->rules, rule, family, ret);
}
static int routing_policy_rule_add_foreign(Manager *m, RoutingPolicyRule *rule, RoutingPolicyRule **ret) {
return routing_policy_rule_add_internal(m, &m->rules_foreign, rule, rule->family, ret);
}
static void log_routing_policy_rule_debug(const RoutingPolicyRule *rule, int family, const char *str, const Link *link) {
assert(rule);
assert(IN_SET(family, AF_INET, AF_INET6));
assert(str);
/* link may be NULL. */
if (DEBUG_LOGGING) {
_cleanup_free_ char *from = NULL, *to = NULL;
(void) in_addr_to_string(family, &rule->from, &from);
(void) in_addr_to_string(family, &rule->to, &to);
log_link_debug(link,
"%s routing policy rule: priority: %"PRIu32", %s/%u -> %s/%u, iif: %s, oif: %s, table: %"PRIu32,
str, rule->priority, strna(from), rule->from_prefixlen, strna(to), rule->to_prefixlen,
strna(rule->iif), strna(rule->oif), rule->table);
}
}
static int routing_policy_rule_set_netlink_message(RoutingPolicyRule *rule, sd_netlink_message *m, Link *link) {
int r;
assert(rule);
assert(m);
/* link may be NULL. */
if (in_addr_is_null(rule->family, &rule->from) == 0) {
r = netlink_message_append_in_addr_union(m, FRA_SRC, rule->family, &rule->from);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_SRC attribute: %m");
r = sd_rtnl_message_routing_policy_rule_set_fib_src_prefixlen(m, rule->from_prefixlen);
if (r < 0)
return log_link_error_errno(link, r, "Could not set source prefix length: %m");
}
if (in_addr_is_null(rule->family, &rule->to) == 0) {
r = netlink_message_append_in_addr_union(m, FRA_DST, rule->family, &rule->to);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_DST attribute: %m");
r = sd_rtnl_message_routing_policy_rule_set_fib_dst_prefixlen(m, rule->to_prefixlen);
if (r < 0)
return log_link_error_errno(link, r, "Could not set destination prefix length: %m");
}
r = sd_netlink_message_append_u32(m, FRA_PRIORITY, rule->priority);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_PRIORITY attribute: %m");
if (rule->tos > 0) {
r = sd_rtnl_message_routing_policy_rule_set_tos(m, rule->tos);
if (r < 0)
return log_link_error_errno(link, r, "Could not set IP rule TOS: %m");
}
if (rule->table < 256) {
r = sd_rtnl_message_routing_policy_rule_set_table(m, rule->table);
if (r < 0)
return log_link_error_errno(link, r, "Could not set IP rule table: %m");
} else {
r = sd_rtnl_message_routing_policy_rule_set_table(m, RT_TABLE_UNSPEC);
if (r < 0)
return log_link_error_errno(link, r, "Could not set IP rule table: %m");
r = sd_netlink_message_append_u32(m, FRA_TABLE, rule->table);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_TABLE attribute: %m");
}
if (rule->fwmark > 0) {
r = sd_netlink_message_append_u32(m, FRA_FWMARK, rule->fwmark);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_FWMARK attribute: %m");
r = sd_netlink_message_append_u32(m, FRA_FWMASK, rule->fwmask);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_FWMASK attribute: %m");
}
if (rule->iif) {
r = sd_netlink_message_append_string(m, FRA_IIFNAME, rule->iif);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_IIFNAME attribute: %m");
}
if (rule->oif) {
r = sd_netlink_message_append_string(m, FRA_OIFNAME, rule->oif);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_OIFNAME attribute: %m");
}
r = sd_netlink_message_append_u8(m, FRA_IP_PROTO, rule->protocol);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_IP_PROTO attribute: %m");
if (rule->sport.start != 0 || rule->sport.end != 0) {
r = sd_netlink_message_append_data(m, FRA_SPORT_RANGE, &rule->sport, sizeof(rule->sport));
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_SPORT_RANGE attribute: %m");
}
if (rule->dport.start != 0 || rule->dport.end != 0) {
r = sd_netlink_message_append_data(m, FRA_DPORT_RANGE, &rule->dport, sizeof(rule->dport));
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_DPORT_RANGE attribute: %m");
}
if (rule->uid_range.start != UID_INVALID && rule->uid_range.end != UID_INVALID) {
r = sd_netlink_message_append_data(m, FRA_UID_RANGE, &rule->uid_range, sizeof(rule->uid_range));
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_UID_RANGE attribute: %m");
}
if (rule->invert_rule) {
r = sd_rtnl_message_routing_policy_rule_set_flags(m, FIB_RULE_INVERT);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FIB_RULE_INVERT attribute: %m");
}
if (rule->suppress_prefixlen >= 0) {
r = sd_netlink_message_append_u32(m, FRA_SUPPRESS_PREFIXLEN, (uint32_t) rule->suppress_prefixlen);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FRA_SUPPRESS_PREFIXLEN attribute: %m");
}
if (rule->type != FR_ACT_TO_TBL) {
r = sd_rtnl_message_routing_policy_rule_set_fib_type(m, rule->type);
if (r < 0)
return log_link_error_errno(link, r, "Could not append FIB rule type attribute: %m");
}
return 0;
}
static int routing_policy_rule_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
int r;
assert(m);
r = sd_netlink_message_get_errno(m);
if (r < 0)
log_message_warning_errno(m, r, "Could not drop routing policy rule");
return 1;
}
static int routing_policy_rule_remove(RoutingPolicyRule *rule, Manager *manager) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
int r;
assert(rule);
assert(manager);
assert(manager->rtnl);
assert(IN_SET(rule->family, AF_INET, AF_INET6));
log_routing_policy_rule_debug(rule, rule->family, "Removing", NULL);
r = sd_rtnl_message_new_routing_policy_rule(manager->rtnl, &m, RTM_DELRULE, rule->family);
if (r < 0)
return log_error_errno(r, "Could not allocate RTM_DELRULE message: %m");
r = routing_policy_rule_set_netlink_message(rule, m, NULL);
if (r < 0)
return r;
r = sd_netlink_call_async(manager->rtnl, NULL, m,
routing_policy_rule_remove_handler,
NULL, NULL, 0, __func__);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
return 0;
}
static int routing_policy_rule_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
int r;
assert(rtnl);
assert(m);
assert(link);
assert(link->ifname);
assert(link->routing_policy_rule_messages > 0);
link->routing_policy_rule_messages--;
if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
r = sd_netlink_message_get_errno(m);
if (r < 0 && r != -EEXIST) {
log_link_message_warning_errno(link, m, r, "Could not add routing policy rule");
link_enter_failed(link);
return 1;
}
if (link->routing_policy_rule_messages == 0) {
log_link_debug(link, "Routing policy rule configured");
link->routing_policy_rules_configured = true;
link_check_ready(link);
}
return 1;
}
static int routing_policy_rule_configure_internal(RoutingPolicyRule *rule, int family, Link *link) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
int r;
assert(rule);
assert(link);
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
log_routing_policy_rule_debug(rule, family, "Configuring", link);
r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_NEWRULE, family);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate RTM_NEWRULE message: %m");
r = routing_policy_rule_set_netlink_message(rule, m, link);
if (r < 0)
return r;
r = netlink_call_async(link->manager->rtnl, NULL, m,
routing_policy_rule_handler,
link_netlink_destroy_callback, link);
if (r < 0)
return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
link_ref(link);
link->routing_policy_rule_messages++;
r = routing_policy_rule_add(link->manager, rule, family, NULL);
if (r < 0)
return log_link_error_errno(link, r, "Could not add rule: %m");
return 1;
}
static int routing_policy_rule_configure(RoutingPolicyRule *rule, Link *link) {
int r;
if (IN_SET(rule->family, AF_INET, AF_INET6))
return routing_policy_rule_configure_internal(rule, rule->family, link);
if (FLAGS_SET(rule->address_family, ADDRESS_FAMILY_IPV4)) {
r = routing_policy_rule_configure_internal(rule, AF_INET, link);
if (r < 0)
return r;
}
if (FLAGS_SET(rule->address_family, ADDRESS_FAMILY_IPV6)) {
r = routing_policy_rule_configure_internal(rule, AF_INET6, link);
if (r < 0)
return r;
}
return 0;
}
static bool manager_links_have_routing_policy_rule(Manager *m, RoutingPolicyRule *rule) {
Link *link;
assert(m);
assert(rule);
HASHMAP_FOREACH(link, m->links) {
RoutingPolicyRule *link_rule;
if (!link->network)
continue;
HASHMAP_FOREACH(link_rule, link->network->rules_by_section)
if (routing_policy_rule_equal(link_rule, rule))
return true;
}
return false;
}
static void routing_policy_rule_purge(Manager *m) {
RoutingPolicyRule *rule;
int r;
assert(m);
SET_FOREACH(rule, m->rules_saved) {
RoutingPolicyRule *existing;
existing = set_get(m->rules_foreign, rule);
if (!existing)
continue; /* Saved rule does not exist anymore. */
if (manager_links_have_routing_policy_rule(m, existing))
continue; /* Existing links have the saved rule. */
/* Existing links do not have the saved rule. Let's drop the rule now, and re-configure it
* later when it is requested. */
r = routing_policy_rule_remove(existing, m);
if (r < 0) {
log_warning_errno(r, "Could not remove routing policy rules: %m");
continue;
}
assert_se(set_remove(m->rules_foreign, existing) == existing);
routing_policy_rule_free(existing);
}
}
int link_set_routing_policy_rules(Link *link) {
RoutingPolicyRule *rule;
int r;
assert(link);
assert(link->network);
if (link->routing_policy_rule_messages != 0) {
log_link_debug(link, "Routing policy rules are configuring.");
return 0;
}
link->routing_policy_rules_configured = false;
HASHMAP_FOREACH(rule, link->network->rules_by_section) {
RoutingPolicyRule *existing;
r = routing_policy_rule_get(link->manager, rule, &existing);
if (r > 0)
continue;
if (r == 0) {
r = set_ensure_put(&link->manager->rules, &routing_policy_rule_hash_ops, existing);
if (r < 0)
return log_link_warning_errno(link, r, "Could not store existing routing policy rule: %m");
set_remove(link->manager->rules_foreign, existing);
continue;
}
r = routing_policy_rule_configure(rule, link);
if (r < 0)
return log_link_warning_errno(link, r, "Could not set routing policy rule: %m");
}
routing_policy_rule_purge(link->manager);
if (link->routing_policy_rule_messages == 0)
link->routing_policy_rules_configured = true;
else {
log_link_debug(link, "Setting routing policy rules");
link_set_state(link, LINK_STATE_CONFIGURING);
}
return 0;
}
int manager_rtnl_process_rule(sd_netlink *rtnl, sd_netlink_message *message, Manager *m) {
_cleanup_(routing_policy_rule_freep) RoutingPolicyRule *tmp = NULL;
RoutingPolicyRule *rule = NULL;
const char *iif = NULL, *oif = NULL;
uint32_t suppress_prefixlen;
unsigned flags;
uint16_t type;
int r;
assert(rtnl);
assert(message);
if (sd_netlink_message_is_error(message)) {
r = sd_netlink_message_get_errno(message);
if (r < 0)
log_message_warning_errno(message, r, "rtnl: failed to receive rule message, ignoring");
return 0;
}
r = sd_netlink_message_get_type(message, &type);
if (r < 0) {
log_warning_errno(r, "rtnl: could not get message type, ignoring: %m");
return 0;
} else if (!IN_SET(type, RTM_NEWRULE, RTM_DELRULE)) {
log_warning("rtnl: received unexpected message type %u when processing rule, ignoring.", type);
return 0;
}
r = routing_policy_rule_new(&tmp);
if (r < 0) {
log_oom();
return 0;
}
r = sd_rtnl_message_get_family(message, &tmp->family);
if (r < 0) {
log_warning_errno(r, "rtnl: could not get rule family, ignoring: %m");
return 0;
} else if (!IN_SET(tmp->family, AF_INET, AF_INET6)) {
log_debug("rtnl: received rule message with invalid family %d, ignoring.", tmp->family);
return 0;
}
r = netlink_message_read_in_addr_union(message, FRA_SRC, tmp->family, &tmp->from);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
return 0;
} else if (r >= 0) {
r = sd_rtnl_message_routing_policy_rule_get_fib_src_prefixlen(message, &tmp->from_prefixlen);
if (r < 0) {
log_warning_errno(r, "rtnl: received rule message without valid source prefix length, ignoring: %m");
return 0;
}
}
r = netlink_message_read_in_addr_union(message, FRA_DST, tmp->family, &tmp->to);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_DST attribute, ignoring: %m");
return 0;
} else if (r >= 0) {
r = sd_rtnl_message_routing_policy_rule_get_fib_dst_prefixlen(message, &tmp->to_prefixlen);
if (r < 0) {
log_warning_errno(r, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
return 0;
}
}
r = sd_rtnl_message_routing_policy_rule_get_flags(message, &flags);
if (r < 0) {
log_warning_errno(r, "rtnl: received rule message without valid flag, ignoring: %m");
return 0;
}
tmp->invert_rule = flags & FIB_RULE_INVERT;
r = sd_netlink_message_read_u32(message, FRA_FWMARK, &tmp->fwmark);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_FWMARK attribute, ignoring: %m");
return 0;
}
r = sd_netlink_message_read_u32(message, FRA_FWMASK, &tmp->fwmask);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_FWMASK attribute, ignoring: %m");
return 0;
}
r = sd_netlink_message_read_u32(message, FRA_PRIORITY, &tmp->priority);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_PRIORITY attribute, ignoring: %m");
return 0;
}
r = sd_netlink_message_read_u32(message, FRA_TABLE, &tmp->table);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_TABLE attribute, ignoring: %m");
return 0;
}
r = sd_rtnl_message_routing_policy_rule_get_tos(message, &tmp->tos);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FIB rule TOS, ignoring: %m");
return 0;
}
r = sd_rtnl_message_routing_policy_rule_get_fib_type(message, &tmp->type);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FIB rule type, ignoring: %m");
return 0;
}
r = sd_netlink_message_read_string(message, FRA_IIFNAME, &iif);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_IIFNAME attribute, ignoring: %m");
return 0;
}
r = free_and_strdup(&tmp->iif, iif);
if (r < 0)
return log_oom();
r = sd_netlink_message_read_string(message, FRA_OIFNAME, &oif);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_OIFNAME attribute, ignoring: %m");
return 0;
}
r = free_and_strdup(&tmp->oif, oif);
if (r < 0)
return log_oom();
r = sd_netlink_message_read_u8(message, FRA_IP_PROTO, &tmp->protocol);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_IP_PROTO attribute, ignoring: %m");
return 0;
}
r = sd_netlink_message_read(message, FRA_SPORT_RANGE, sizeof(tmp->sport), &tmp->sport);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_SPORT_RANGE attribute, ignoring: %m");
return 0;
}
r = sd_netlink_message_read(message, FRA_DPORT_RANGE, sizeof(tmp->dport), &tmp->dport);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_DPORT_RANGE attribute, ignoring: %m");
return 0;
}
r = sd_netlink_message_read(message, FRA_UID_RANGE, sizeof(tmp->uid_range), &tmp->uid_range);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_UID_RANGE attribute, ignoring: %m");
return 0;
}
r = sd_netlink_message_read_u32(message, FRA_SUPPRESS_PREFIXLEN, &suppress_prefixlen);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_SUPPRESS_PREFIXLEN attribute, ignoring: %m");
return 0;
}
if (r >= 0)
tmp->suppress_prefixlen = (int) suppress_prefixlen;
(void) routing_policy_rule_get(m, tmp, &rule);
switch (type) {
case RTM_NEWRULE:
if (rule)
log_routing_policy_rule_debug(tmp, tmp->family, "Received remembered", NULL);
else {
log_routing_policy_rule_debug(tmp, tmp->family, "Remembering foreign", NULL);
r = routing_policy_rule_add_foreign(m, tmp, &rule);
if (r < 0) {
log_warning_errno(r, "Could not remember foreign rule, ignoring: %m");
return 0;
}
}
break;
case RTM_DELRULE:
if (rule) {
log_routing_policy_rule_debug(tmp, tmp->family, "Forgetting", NULL);
routing_policy_rule_free(rule);
} else
log_routing_policy_rule_debug(tmp, tmp->family, "Kernel removed unknown", NULL);
break;
default:
assert_not_reached("Received invalid RTNL message type");
}
return 1;
}
static int parse_fwmark_fwmask(const char *s, uint32_t *ret_fwmark, uint32_t *ret_fwmask) {
_cleanup_free_ char *fwmark_str = NULL;
uint32_t fwmark, fwmask = 0;
const char *slash;
int r;
assert(s);
assert(ret_fwmark);
assert(ret_fwmask);
slash = strchr(s, '/');
if (slash) {
fwmark_str = strndup(s, slash - s);
if (!fwmark_str)
return -ENOMEM;
}
r = safe_atou32(fwmark_str ?: s, &fwmark);
if (r < 0)
return r;
if (fwmark > 0) {
if (slash) {
r = safe_atou32(slash + 1, &fwmask);
if (r < 0)
return r;
} else
fwmask = UINT32_MAX;
}
*ret_fwmark = fwmark;
*ret_fwmask = fwmask;
return 0;
}
int config_parse_routing_policy_rule_tos(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = safe_atou8(rvalue, &n->tos);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse RPDB rule TOS, ignoring: %s", rvalue);
return 0;
}
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_priority(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = safe_atou32(rvalue, &n->priority);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse RPDB rule priority, ignoring: %s", rvalue);
return 0;
}
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_table(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = safe_atou32(rvalue, &n->table);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse RPDB rule table, ignoring: %s", rvalue);
return 0;
}
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_fwmark_mask(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = parse_fwmark_fwmask(rvalue, &n->fwmark, &n->fwmask);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse RPDB rule firewall mark or mask, ignoring: %s", rvalue);
return 0;
}
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_prefix(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
union in_addr_union *buffer;
uint8_t *prefixlen;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
if (streq(lvalue, "To")) {
buffer = &n->to;
prefixlen = &n->to_prefixlen;
} else {
buffer = &n->from;
prefixlen = &n->from_prefixlen;
}
if (n->family == AF_UNSPEC)
r = in_addr_prefix_from_string_auto(rvalue, &n->family, buffer, prefixlen);
else
r = in_addr_prefix_from_string(rvalue, n->family, buffer, prefixlen);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "RPDB rule prefix is invalid, ignoring assignment: %s", rvalue);
return 0;
}
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_device(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
if (!ifname_valid(rvalue)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Failed to parse '%s' interface name, ignoring: %s", lvalue, rvalue);
return 0;
}
if (streq(lvalue, "IncomingInterface")) {
r = free_and_strdup(&n->iif, rvalue);
if (r < 0)
return log_oom();
} else {
r = free_and_strdup(&n->oif, rvalue);
if (r < 0)
return log_oom();
}
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_port_range(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
uint16_t low, high;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = parse_ip_port_range(rvalue, &low, &high);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse routing policy rule port range '%s'", rvalue);
return 0;
}
if (streq(lvalue, "SourcePort")) {
n->sport.start = low;
n->sport.end = high;
} else {
n->dport.start = low;
n->dport.end = high;
}
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_ip_protocol(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = parse_ip_protocol(rvalue);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse IP protocol '%s' for routing policy rule, ignoring: %m", rvalue);
return 0;
}
n->protocol = r;
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_invert(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = parse_boolean(rvalue);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse RPDB rule invert, ignoring: %s", rvalue);
return 0;
}
n->invert_rule = r;
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_family(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
AddressFamily a;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
a = routing_policy_rule_address_family_from_string(rvalue);
if (a < 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid address family '%s', ignoring.", rvalue);
return 0;
}
n->address_family = a;
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_uid_range(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
uid_t start, end;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = get_user_creds(&rvalue, &start, NULL, NULL, NULL, 0);
if (r >= 0)
end = start;
else {
r = parse_uid_range(rvalue, &start, &end);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid uid or uid range '%s', ignoring: %m", rvalue);
return 0;
}
}
n->uid_range.start = start;
n->uid_range.end = end;
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_suppress_prefixlen(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = parse_ip_prefix_length(rvalue, &n->suppress_prefixlen);
if (r == -ERANGE) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Prefix length outside of valid range 0-128, ignoring: %s", rvalue);
return 0;
}
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse RPDB rule suppress_prefixlen, ignoring: %s", rvalue);
return 0;
}
n = NULL;
return 0;
}
int config_parse_routing_policy_rule_type(
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_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
Network *network = userdata;
int r, t;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = routing_policy_rule_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
t = fr_act_type_from_string(rvalue);
if (t < 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Could not parse FIB rule type \"%s\", ignoring assignment: %m", rvalue);
return 0;
}
n->type = (uint8_t) t;
n = NULL;
return 0;
}
static int routing_policy_rule_section_verify(RoutingPolicyRule *rule) {
if (section_is_invalid(rule->section))
return -EINVAL;
if ((rule->family == AF_INET && FLAGS_SET(rule->address_family, ADDRESS_FAMILY_IPV6)) ||
(rule->family == AF_INET6 && FLAGS_SET(rule->address_family, ADDRESS_FAMILY_IPV4)))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"%s: address family specified by Family= conflicts with the address "
"specified by To= or From=. Ignoring [RoutingPolicyRule] section from line %u.",
rule->section->filename, rule->section->line);
if (rule->family == AF_UNSPEC && rule->address_family == ADDRESS_FAMILY_NO)
rule->family = AF_INET;
return 0;
}
void network_drop_invalid_routing_policy_rules(Network *network) {
RoutingPolicyRule *rule;
assert(network);
HASHMAP_FOREACH(rule, network->rules_by_section)
if (routing_policy_rule_section_verify(rule) < 0)
routing_policy_rule_free(rule);
}
int routing_policy_serialize_rules(Set *rules, FILE *f) {
RoutingPolicyRule *rule;
int r;
assert(f);
SET_FOREACH(rule, rules) {
const char *family_str;
bool space = false;
fputs("RULE=", f);
family_str = af_to_name(rule->family);
if (family_str) {
fprintf(f, "family=%s",
family_str);
space = true;
}
if (!in_addr_is_null(rule->family, &rule->from)) {
_cleanup_free_ char *str = NULL;
r = in_addr_to_string(rule->family, &rule->from, &str);
if (r < 0)
return r;
fprintf(f, "%sfrom=%s/%hhu",
space ? " " : "",
str, rule->from_prefixlen);
space = true;
}
if (!in_addr_is_null(rule->family, &rule->to)) {
_cleanup_free_ char *str = NULL;
r = in_addr_to_string(rule->family, &rule->to, &str);
if (r < 0)
return r;
fprintf(f, "%sto=%s/%hhu",
space ? " " : "",
str, rule->to_prefixlen);
space = true;
}
if (rule->tos != 0) {
fprintf(f, "%stos=%hhu",
space ? " " : "",
rule->tos);
space = true;
}
if (rule->type != 0) {
fprintf(f, "%stype=%hhu",
space ? " " : "",
rule->type);
space = true;
}
if (rule->priority != 0) {
fprintf(f, "%spriority=%"PRIu32,
space ? " " : "",
rule->priority);
space = true;
}
if (rule->fwmark != 0) {
fprintf(f, "%sfwmark=%"PRIu32,
space ? " " : "",
rule->fwmark);
if (rule->fwmask != UINT32_MAX)
fprintf(f, "/%"PRIu32, rule->fwmask);
space = true;
}
if (rule->iif) {
fprintf(f, "%siif=%s",
space ? " " : "",
rule->iif);
space = true;
}
if (rule->oif) {
fprintf(f, "%soif=%s",
space ? " " : "",
rule->oif);
space = true;
}
if (rule->protocol != 0) {
fprintf(f, "%sprotocol=%hhu",
space ? " " : "",
rule->protocol);
space = true;
}
if (rule->sport.start != 0 || rule->sport.end != 0) {
fprintf(f, "%ssourcesport=%"PRIu16"-%"PRIu16,
space ? " " : "",
rule->sport.start, rule->sport.end);
space = true;
}
if (rule->dport.start != 0 || rule->dport.end != 0) {
fprintf(f, "%sdestinationport=%"PRIu16"-%"PRIu16,
space ? " " : "",
rule->dport.start, rule->dport.end);
space = true;
}
if (rule->uid_range.start != UID_INVALID && rule->uid_range.end != UID_INVALID) {
assert_cc(sizeof(uid_t) == sizeof(uint32_t));
fprintf(f, "%suidrange="UID_FMT"-"UID_FMT,
space ? " " : "",
rule->uid_range.start, rule->uid_range.end);
space = true;
}
if (rule->suppress_prefixlen >= 0) {
fprintf(f, "%ssuppress_prefixlen=%d",
space ? " " : "",
rule->suppress_prefixlen);
space = true;
}
fprintf(f, "%sinvert_rule=%s table=%"PRIu32"\n",
space ? " " : "",
yes_no(rule->invert_rule),
rule->table);
}
return 0;
}
static int routing_policy_rule_read_full_file(const char *state_file, char ***ret) {
_cleanup_strv_free_ char **lines = NULL;
_cleanup_free_ char *s = NULL;
int r;
assert(state_file);
r = read_full_file(state_file, &s, NULL);
if (r == -ENOENT) {
*ret = NULL;
return 0;
}
if (r < 0)
return r;
lines = strv_split_newlines(s);
if (!lines)
return -ENOMEM;
*ret = TAKE_PTR(lines);
return 0;
}
int routing_policy_load_rules(const char *state_file, Set **rules) {
_cleanup_strv_free_ char **data = NULL;
char **i;
int r;
assert(state_file);
assert(rules);
r = routing_policy_rule_read_full_file(state_file, &data);
if (r < 0)
return log_warning_errno(r, "Failed to read %s, ignoring: %m", state_file);
STRV_FOREACH(i, data) {
_cleanup_(routing_policy_rule_freep) RoutingPolicyRule *rule = NULL;
const char *p;
p = startswith(*i, "RULE=");
if (!p)
continue;
r = routing_policy_rule_new(&rule);
if (r < 0)
return log_oom();
for (;;) {
_cleanup_free_ char *a = NULL;
char *b;
r = extract_first_word(&p, &a, NULL, 0);
if (r < 0)
return log_oom();
if (r == 0)
break;
b = strchr(a, '=');
if (!b) {
log_warning_errno(r, "Failed to parse RPDB rule, ignoring: %s", a);
continue;
}
*b++ = '\0';
if (streq(a, "family")) {
r = af_from_name(b);
if (r < 0) {
log_warning_errno(r, "Failed to parse RPDB rule family, ignoring: %s", b);
continue;
}
if (rule->family != AF_UNSPEC && rule->family != r) {
log_warning("RPDB rule family is already specified, ignoring assignment: %s", b);
continue;
}
rule->family = r;
} else if (STR_IN_SET(a, "from", "to")) {
union in_addr_union *buffer;
uint8_t *prefixlen;
if (streq(a, "to")) {
buffer = &rule->to;
prefixlen = &rule->to_prefixlen;
} else {
buffer = &rule->from;
prefixlen = &rule->from_prefixlen;
}
if (rule->family == AF_UNSPEC)
r = in_addr_prefix_from_string_auto(b, &rule->family, buffer, prefixlen);
else
r = in_addr_prefix_from_string(b, rule->family, buffer, prefixlen);
if (r < 0) {
log_warning_errno(r, "RPDB rule prefix is invalid, ignoring assignment: %s", b);
continue;
}
} else if (streq(a, "tos")) {
r = safe_atou8(b, &rule->tos);
if (r < 0) {
log_warning_errno(r, "Failed to parse RPDB rule TOS, ignoring: %s", b);
continue;
}
} else if (streq(a, "type")) {
r = safe_atou8(b, &rule->type);
if (r < 0) {
log_warning_errno(r, "Failed to parse RPDB rule type, ignoring: %s", b);
continue;
}
} else if (streq(a, "table")) {
r = safe_atou32(b, &rule->table);
if (r < 0) {
log_warning_errno(r, "Failed to parse RPDB rule table, ignoring: %s", b);
continue;
}
} else if (streq(a, "priority")) {
r = safe_atou32(b, &rule->priority);
if (r < 0) {
log_warning_errno(r, "Failed to parse RPDB rule priority, ignoring: %s", b);
continue;
}
} else if (streq(a, "fwmark")) {
r = parse_fwmark_fwmask(b, &rule->fwmark, &rule->fwmask);
if (r < 0) {
log_warning_errno(r, "Failed to parse RPDB rule firewall mark or mask, ignoring: %s", a);
continue;
}
} else if (streq(a, "iif")) {
if (free_and_strdup(&rule->iif, b) < 0)
return log_oom();
} else if (streq(a, "oif")) {
if (free_and_strdup(&rule->oif, b) < 0)
return log_oom();
} else if (streq(a, "protocol")) {
r = safe_atou8(b, &rule->protocol);
if (r < 0) {
log_warning_errno(r, "Failed to parse RPDB rule protocol, ignoring: %s", b);
continue;
}
} else if (streq(a, "sourceport")) {
uint16_t low, high;
r = parse_ip_port_range(b, &low, &high);
if (r < 0) {
log_warning_errno(r, "Invalid routing policy rule source port range, ignoring assignment: '%s'", b);
continue;
}
rule->sport.start = low;
rule->sport.end = high;
} else if (streq(a, "destinationport")) {
uint16_t low, high;
r = parse_ip_port_range(b, &low, &high);
if (r < 0) {
log_warning_errno(r, "Invalid routing policy rule destination port range, ignoring assignment: '%s'", b);
continue;
}
rule->dport.start = low;
rule->dport.end = high;
} else if (streq(a, "uidrange")) {
uid_t lower, upper;
r = parse_uid_range(b, &lower, &upper);
if (r < 0) {
log_warning_errno(r, "Invalid routing policy rule uid range, ignoring assignment: '%s'", b);
continue;
}
rule->uid_range.start = lower;
rule->uid_range.end = upper;
} else if (streq(a, "suppress_prefixlen")) {
r = parse_ip_prefix_length(b, &rule->suppress_prefixlen);
if (r == -ERANGE) {
log_warning_errno(r, "Prefix length outside of valid range 0-128, ignoring: %s", b);
continue;
}
if (r < 0) {
log_warning_errno(r, "Failed to parse RPDB rule suppress_prefixlen, ignoring: %s", b);
continue;
}
} else if (streq(a, "invert_rule")) {
r = parse_boolean(b);
if (r < 0) {
log_warning_errno(r, "Failed to parse RPDB rule invert_rule, ignoring: %s", b);
continue;
}
rule->invert_rule = r;
} else
log_warning("Unknown RPDB rule, ignoring: %s", a);
}
r = set_ensure_put(rules, &routing_policy_rule_hash_ops, rule);
if (r < 0) {
log_warning_errno(r, "Failed to add RPDB rule to saved DB, ignoring: %s", *i);
continue;
}
if (r > 0)
rule = NULL;
}
return 0;
}
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