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-rw-r--r--src/network/networkd-address.c969
1 files changed, 969 insertions, 0 deletions
diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c
new file mode 100644
index 0000000..3cdbd9e
--- /dev/null
+++ b/src/network/networkd-address.c
@@ -0,0 +1,969 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <net/if.h>
+
+#include "alloc-util.h"
+#include "conf-parser.h"
+#include "firewall-util.h"
+#include "missing_network.h"
+#include "netlink-util.h"
+#include "networkd-address.h"
+#include "networkd-manager.h"
+#include "parse-util.h"
+#include "set.h"
+#include "socket-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "utf8.h"
+#include "util.h"
+
+#define ADDRESSES_PER_LINK_MAX 2048U
+#define STATIC_ADDRESSES_PER_NETWORK_MAX 1024U
+
+int address_new(Address **ret) {
+ _cleanup_(address_freep) Address *address = NULL;
+
+ address = new(Address, 1);
+ if (!address)
+ return -ENOMEM;
+
+ *address = (Address) {
+ .family = AF_UNSPEC,
+ .scope = RT_SCOPE_UNIVERSE,
+ .cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME,
+ .cinfo.ifa_valid = CACHE_INFO_INFINITY_LIFE_TIME,
+ };
+
+ *ret = TAKE_PTR(address);
+
+ return 0;
+}
+
+int address_new_static(Network *network, const char *filename, unsigned section_line, Address **ret) {
+ _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
+ _cleanup_(address_freep) Address *address = NULL;
+ int r;
+
+ assert(network);
+ assert(ret);
+ assert(!!filename == (section_line > 0));
+
+ if (filename) {
+ r = network_config_section_new(filename, section_line, &n);
+ if (r < 0)
+ return r;
+
+ address = hashmap_get(network->addresses_by_section, n);
+ if (address) {
+ *ret = TAKE_PTR(address);
+
+ return 0;
+ }
+ }
+
+ if (network->n_static_addresses >= STATIC_ADDRESSES_PER_NETWORK_MAX)
+ return -E2BIG;
+
+ r = address_new(&address);
+ if (r < 0)
+ return r;
+
+ address->network = network;
+ LIST_APPEND(addresses, network->static_addresses, address);
+ network->n_static_addresses++;
+
+ if (filename) {
+ address->section = TAKE_PTR(n);
+
+ r = hashmap_ensure_allocated(&network->addresses_by_section, &network_config_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = hashmap_put(network->addresses_by_section, address->section, address);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = TAKE_PTR(address);
+
+ return 0;
+}
+
+void address_free(Address *address) {
+ if (!address)
+ return;
+
+ if (address->network) {
+ LIST_REMOVE(addresses, address->network->static_addresses, address);
+ assert(address->network->n_static_addresses > 0);
+ address->network->n_static_addresses--;
+
+ if (address->section)
+ hashmap_remove(address->network->addresses_by_section, address->section);
+ }
+
+ if (address->link) {
+ set_remove(address->link->addresses, address);
+ set_remove(address->link->addresses_foreign, address);
+
+ if (in_addr_equal(AF_INET6, &address->in_addr, (const union in_addr_union *) &address->link->ipv6ll_address))
+ memzero(&address->link->ipv6ll_address, sizeof(struct in6_addr));
+ }
+
+ network_config_section_free(address->section);
+ free(address->label);
+ free(address);
+}
+
+static void address_hash_func(const Address *a, struct siphash *state) {
+ assert(a);
+
+ siphash24_compress(&a->family, sizeof(a->family), state);
+
+ switch (a->family) {
+ case AF_INET:
+ siphash24_compress(&a->prefixlen, sizeof(a->prefixlen), state);
+
+ /* peer prefix */
+ if (a->prefixlen != 0) {
+ uint32_t prefix;
+
+ if (a->in_addr_peer.in.s_addr != 0)
+ prefix = be32toh(a->in_addr_peer.in.s_addr) >> (32 - a->prefixlen);
+ else
+ prefix = be32toh(a->in_addr.in.s_addr) >> (32 - a->prefixlen);
+
+ siphash24_compress(&prefix, sizeof(prefix), state);
+ }
+
+ _fallthrough_;
+ case AF_INET6:
+ /* local address */
+ siphash24_compress(&a->in_addr, FAMILY_ADDRESS_SIZE(a->family), state);
+
+ break;
+ default:
+ /* treat any other address family as AF_UNSPEC */
+ break;
+ }
+}
+
+static int address_compare_func(const Address *a1, const Address *a2) {
+ int r;
+
+ r = CMP(a1->family, a2->family);
+ if (r != 0)
+ return r;
+
+ switch (a1->family) {
+ /* use the same notion of equality as the kernel does */
+ case AF_INET:
+ r = CMP(a1->prefixlen, a2->prefixlen);
+ if (r != 0)
+ return r;
+
+ /* compare the peer prefixes */
+ if (a1->prefixlen != 0) {
+ /* make sure we don't try to shift by 32.
+ * See ISO/IEC 9899:TC3 ยง 6.5.7.3. */
+ uint32_t b1, b2;
+
+ if (a1->in_addr_peer.in.s_addr != 0)
+ b1 = be32toh(a1->in_addr_peer.in.s_addr) >> (32 - a1->prefixlen);
+ else
+ b1 = be32toh(a1->in_addr.in.s_addr) >> (32 - a1->prefixlen);
+
+ if (a2->in_addr_peer.in.s_addr != 0)
+ b2 = be32toh(a2->in_addr_peer.in.s_addr) >> (32 - a1->prefixlen);
+ else
+ b2 = be32toh(a2->in_addr.in.s_addr) >> (32 - a1->prefixlen);
+
+ r = CMP(b1, b2);
+ if (r != 0)
+ return r;
+ }
+
+ _fallthrough_;
+ case AF_INET6:
+ return memcmp(&a1->in_addr, &a2->in_addr, FAMILY_ADDRESS_SIZE(a1->family));
+ default:
+ /* treat any other address family as AF_UNSPEC */
+ return 0;
+ }
+}
+
+DEFINE_PRIVATE_HASH_OPS(address_hash_ops, Address, address_hash_func, address_compare_func);
+
+bool address_equal(Address *a1, Address *a2) {
+ if (a1 == a2)
+ return true;
+
+ if (!a1 || !a2)
+ return false;
+
+ return address_compare_func(a1, a2) == 0;
+}
+
+static int address_establish(Address *address, Link *link) {
+ bool masq;
+ int r;
+
+ assert(address);
+ assert(link);
+
+ masq = link->network &&
+ link->network->ip_masquerade &&
+ address->family == AF_INET &&
+ address->scope < RT_SCOPE_LINK;
+
+ /* Add firewall entry if this is requested */
+ if (address->ip_masquerade_done != masq) {
+ union in_addr_union masked = address->in_addr;
+ in_addr_mask(address->family, &masked, address->prefixlen);
+
+ r = fw_add_masquerade(masq, AF_INET, 0, &masked, address->prefixlen, NULL, NULL, 0);
+ if (r < 0)
+ log_link_warning_errno(link, r, "Could not enable IP masquerading: %m");
+
+ address->ip_masquerade_done = masq;
+ }
+
+ return 0;
+}
+
+static int address_add_internal(Link *link, Set **addresses,
+ int family,
+ const union in_addr_union *in_addr,
+ unsigned char prefixlen,
+ Address **ret) {
+ _cleanup_(address_freep) Address *address = NULL;
+ int r;
+
+ assert(link);
+ assert(addresses);
+ assert(in_addr);
+
+ r = address_new(&address);
+ if (r < 0)
+ return r;
+
+ address->family = family;
+ address->in_addr = *in_addr;
+ address->prefixlen = prefixlen;
+ /* Consider address tentative until we get the real flags from the kernel */
+ address->flags = IFA_F_TENTATIVE;
+
+ r = set_ensure_allocated(addresses, &address_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = set_put(*addresses, address);
+ if (r < 0)
+ return r;
+
+ address->link = link;
+
+ if (ret)
+ *ret = address;
+
+ address = NULL;
+
+ return 0;
+}
+
+int address_add_foreign(Link *link, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret) {
+ return address_add_internal(link, &link->addresses_foreign, family, in_addr, prefixlen, ret);
+}
+
+int address_add(Link *link, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret) {
+ Address *address;
+ int r;
+
+ r = address_get(link, family, in_addr, prefixlen, &address);
+ if (r == -ENOENT) {
+ /* Address does not exist, create a new one */
+ r = address_add_internal(link, &link->addresses, family, in_addr, prefixlen, &address);
+ if (r < 0)
+ return r;
+ } else if (r == 0) {
+ /* Take over a foreign address */
+ r = set_ensure_allocated(&link->addresses, &address_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = set_put(link->addresses, address);
+ if (r < 0)
+ return r;
+
+ set_remove(link->addresses_foreign, address);
+ } else if (r == 1) {
+ /* Already exists, do nothing */
+ ;
+ } else
+ return r;
+
+ if (ret)
+ *ret = address;
+
+ return 0;
+}
+
+static int address_release(Address *address) {
+ int r;
+
+ assert(address);
+ assert(address->link);
+
+ /* Remove masquerading firewall entry if it was added */
+ if (address->ip_masquerade_done) {
+ union in_addr_union masked = address->in_addr;
+ in_addr_mask(address->family, &masked, address->prefixlen);
+
+ r = fw_add_masquerade(false, AF_INET, 0, &masked, address->prefixlen, NULL, NULL, 0);
+ if (r < 0)
+ log_link_warning_errno(address->link, r, "Failed to disable IP masquerading: %m");
+
+ address->ip_masquerade_done = false;
+ }
+
+ return 0;
+}
+
+int address_update(
+ Address *address,
+ unsigned char flags,
+ unsigned char scope,
+ const struct ifa_cacheinfo *cinfo) {
+
+ bool ready;
+ int r;
+
+ assert(address);
+ assert(cinfo);
+ assert_return(address->link, 1);
+
+ if (IN_SET(address->link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return 1;
+
+ ready = address_is_ready(address);
+
+ address->flags = flags;
+ address->scope = scope;
+ address->cinfo = *cinfo;
+
+ link_update_operstate(address->link);
+ link_check_ready(address->link);
+
+ if (!ready &&
+ address_is_ready(address) &&
+ address->family == AF_INET6 &&
+ in_addr_is_link_local(AF_INET6, &address->in_addr) > 0 &&
+ in_addr_is_null(AF_INET6, (const union in_addr_union*) &address->link->ipv6ll_address) > 0) {
+
+ r = link_ipv6ll_gained(address->link, &address->in_addr.in6);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+int address_drop(Address *address) {
+ Link *link;
+ bool ready;
+
+ assert(address);
+
+ ready = address_is_ready(address);
+ link = address->link;
+
+ address_release(address);
+ address_free(address);
+
+ link_update_operstate(link);
+
+ if (link && !ready)
+ link_check_ready(link);
+
+ return 0;
+}
+
+int address_get(Link *link,
+ int family,
+ const union in_addr_union *in_addr,
+ unsigned char prefixlen,
+ Address **ret) {
+
+ Address address, *existing;
+
+ assert(link);
+ assert(in_addr);
+
+ address = (Address) {
+ .family = family,
+ .in_addr = *in_addr,
+ .prefixlen = prefixlen,
+ };
+
+ existing = set_get(link->addresses, &address);
+ if (existing) {
+ if (ret)
+ *ret = existing;
+ return 1;
+ }
+
+ existing = set_get(link->addresses_foreign, &address);
+ if (existing) {
+ if (ret)
+ *ret = existing;
+ return 0;
+ }
+
+ return -ENOENT;
+}
+
+static int address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
+ int r;
+
+ assert(m);
+ assert(link);
+ assert(link->ifname);
+
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return 1;
+
+ r = sd_netlink_message_get_errno(m);
+ if (r < 0 && r != -EADDRNOTAVAIL)
+ log_link_warning_errno(link, r, "Could not drop address: %m");
+
+ return 1;
+}
+
+int address_remove(
+ Address *address,
+ Link *link,
+ link_netlink_message_handler_t callback) {
+
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
+ _cleanup_free_ char *b = NULL;
+ int r;
+
+ assert(address);
+ assert(IN_SET(address->family, AF_INET, AF_INET6));
+ assert(link);
+ assert(link->ifindex > 0);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+
+ if (DEBUG_LOGGING) {
+ if (in_addr_to_string(address->family, &address->in_addr, &b) >= 0)
+ log_link_debug(link, "Removing address %s", b);
+ }
+
+ r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_DELADDR,
+ link->ifindex, address->family);
+ if (r < 0)
+ return log_error_errno(r, "Could not allocate RTM_DELADDR message: %m");
+
+ r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen);
+ if (r < 0)
+ return log_error_errno(r, "Could not set prefixlen: %m");
+
+ if (address->family == AF_INET)
+ r = sd_netlink_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
+ else if (address->family == AF_INET6)
+ r = sd_netlink_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m");
+
+ r = netlink_call_async(link->manager->rtnl, NULL, req,
+ callback ?: address_remove_handler,
+ link_netlink_destroy_callback, link);
+ if (r < 0)
+ return log_error_errno(r, "Could not send rtnetlink message: %m");
+
+ link_ref(link);
+
+ return 0;
+}
+
+static int address_acquire(Link *link, Address *original, Address **ret) {
+ union in_addr_union in_addr = {};
+ struct in_addr broadcast = {};
+ _cleanup_(address_freep) Address *na = NULL;
+ int r;
+
+ assert(link);
+ assert(original);
+ assert(ret);
+
+ /* Something useful was configured? just use it */
+ if (in_addr_is_null(original->family, &original->in_addr) <= 0)
+ return 0;
+
+ /* The address is configured to be 0.0.0.0 or [::] by the user?
+ * Then let's acquire something more useful from the pool. */
+ r = manager_address_pool_acquire(link->manager, original->family, original->prefixlen, &in_addr);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Failed to acquire address from pool: %m");
+ if (r == 0) {
+ log_link_error(link, "Couldn't find free address for interface, all taken.");
+ return -EBUSY;
+ }
+
+ if (original->family == AF_INET) {
+ /* Pick first address in range for ourselves ... */
+ in_addr.in.s_addr = in_addr.in.s_addr | htobe32(1);
+
+ /* .. and use last as broadcast address */
+ if (original->prefixlen > 30)
+ broadcast.s_addr = 0;
+ else
+ broadcast.s_addr = in_addr.in.s_addr | htobe32(0xFFFFFFFFUL >> original->prefixlen);
+ } else if (original->family == AF_INET6)
+ in_addr.in6.s6_addr[15] |= 1;
+
+ r = address_new(&na);
+ if (r < 0)
+ return r;
+
+ na->family = original->family;
+ na->prefixlen = original->prefixlen;
+ na->scope = original->scope;
+ na->cinfo = original->cinfo;
+
+ if (original->label) {
+ na->label = strdup(original->label);
+ if (!na->label)
+ return -ENOMEM;
+ }
+
+ na->broadcast = broadcast;
+ na->in_addr = in_addr;
+
+ LIST_PREPEND(addresses, link->pool_addresses, na);
+
+ *ret = TAKE_PTR(na);
+
+ return 0;
+}
+
+int address_configure(
+ Address *address,
+ Link *link,
+ link_netlink_message_handler_t callback,
+ bool update) {
+
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
+ int r;
+
+ assert(address);
+ assert(IN_SET(address->family, AF_INET, AF_INET6));
+ assert(link);
+ assert(link->ifindex > 0);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+ assert(callback);
+
+ /* If this is a new address, then refuse adding more than the limit */
+ if (address_get(link, address->family, &address->in_addr, address->prefixlen, NULL) <= 0 &&
+ set_size(link->addresses) >= ADDRESSES_PER_LINK_MAX)
+ return -E2BIG;
+
+ r = address_acquire(link, address, &address);
+ if (r < 0)
+ return r;
+
+ if (update)
+ r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &req,
+ link->ifindex, address->family);
+ else
+ r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_NEWADDR,
+ link->ifindex, address->family);
+ if (r < 0)
+ return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m");
+
+ r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen);
+ if (r < 0)
+ return log_error_errno(r, "Could not set prefixlen: %m");
+
+ address->flags |= IFA_F_PERMANENT;
+
+ if (address->home_address)
+ address->flags |= IFA_F_HOMEADDRESS;
+
+ if (address->duplicate_address_detection)
+ address->flags |= IFA_F_NODAD;
+
+ if (address->manage_temporary_address)
+ address->flags |= IFA_F_MANAGETEMPADDR;
+
+ if (address->prefix_route)
+ address->flags |= IFA_F_NOPREFIXROUTE;
+
+ if (address->autojoin)
+ address->flags |= IFA_F_MCAUTOJOIN;
+
+ r = sd_rtnl_message_addr_set_flags(req, (address->flags & 0xff));
+ if (r < 0)
+ return log_error_errno(r, "Could not set flags: %m");
+
+ if (address->flags & ~0xff) {
+ r = sd_netlink_message_append_u32(req, IFA_FLAGS, address->flags);
+ if (r < 0)
+ return log_error_errno(r, "Could not set extended flags: %m");
+ }
+
+ r = sd_rtnl_message_addr_set_scope(req, address->scope);
+ if (r < 0)
+ return log_error_errno(r, "Could not set scope: %m");
+
+ if (address->family == AF_INET)
+ r = sd_netlink_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
+ else if (address->family == AF_INET6)
+ r = sd_netlink_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m");
+
+ if (!in_addr_is_null(address->family, &address->in_addr_peer)) {
+ if (address->family == AF_INET)
+ r = sd_netlink_message_append_in_addr(req, IFA_ADDRESS, &address->in_addr_peer.in);
+ else if (address->family == AF_INET6)
+ r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &address->in_addr_peer.in6);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_ADDRESS attribute: %m");
+ } else if (address->family == AF_INET && address->prefixlen <= 30) {
+ r = sd_netlink_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_BROADCAST attribute: %m");
+ }
+
+ if (address->label) {
+ r = sd_netlink_message_append_string(req, IFA_LABEL, address->label);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_LABEL attribute: %m");
+ }
+
+ r = sd_netlink_message_append_cache_info(req, IFA_CACHEINFO, &address->cinfo);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_CACHEINFO attribute: %m");
+
+ r = address_establish(address, link);
+ if (r < 0)
+ return r;
+
+ r = netlink_call_async(link->manager->rtnl, NULL, req, callback, link_netlink_destroy_callback, link);
+ if (r < 0) {
+ address_release(address);
+ return log_error_errno(r, "Could not send rtnetlink message: %m");
+ }
+
+ link_ref(link);
+
+ if (address->family == AF_INET6 && !in_addr_is_null(address->family, &address->in_addr_peer))
+ r = address_add(link, address->family, &address->in_addr_peer, address->prefixlen, NULL);
+ else
+ r = address_add(link, address->family, &address->in_addr, address->prefixlen, NULL);
+ if (r < 0) {
+ address_release(address);
+ return log_error_errno(r, "Could not add address: %m");
+ }
+
+ return 0;
+}
+
+int config_parse_broadcast(
+ 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) {
+
+ Network *network = userdata;
+ _cleanup_(address_freep) Address *n = NULL;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = address_new_static(network, filename, section_line, &n);
+ if (r < 0)
+ return r;
+
+ if (n->family == AF_INET6) {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Broadcast is not valid for IPv6 addresses, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ r = in_addr_from_string(AF_INET, rvalue, (union in_addr_union*) &n->broadcast);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Broadcast is invalid, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ n->family = AF_INET;
+ n = NULL;
+
+ return 0;
+}
+
+int config_parse_address(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) {
+
+ Network *network = userdata;
+ _cleanup_(address_freep) Address *n = NULL;
+ union in_addr_union buffer;
+ unsigned char prefixlen;
+ int r, f;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (streq(section, "Network")) {
+ /* we are not in an Address section, so treat
+ * this as the special '0' section */
+ r = address_new_static(network, NULL, 0, &n);
+ } else
+ r = address_new_static(network, filename, section_line, &n);
+
+ if (r < 0)
+ return r;
+
+ /* Address=address/prefixlen */
+ r = in_addr_prefix_from_string_auto_internal(rvalue, PREFIXLEN_REFUSE, &f, &buffer, &prefixlen);
+ if (r == -ENOANO) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "An address '%s' is specified without prefix length. "
+ "The behavior of parsing addresses without prefix length will be changed in the future release. "
+ "Please specify prefix length explicitly.", rvalue);
+
+ r = in_addr_prefix_from_string_auto_internal(rvalue, PREFIXLEN_LEGACY, &f, &buffer, &prefixlen);
+ }
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Invalid address '%s', ignoring assignment: %m", rvalue);
+ return 0;
+ }
+
+ if (n->family != AF_UNSPEC && f != n->family) {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Address is incompatible, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ n->family = f;
+ n->prefixlen = prefixlen;
+
+ if (streq(lvalue, "Address"))
+ n->in_addr = buffer;
+ else
+ n->in_addr_peer = buffer;
+
+ if (n->family == AF_INET && n->broadcast.s_addr == 0)
+ n->broadcast.s_addr = n->in_addr.in.s_addr | htonl(0xfffffffflu >> n->prefixlen);
+
+ n = NULL;
+
+ return 0;
+}
+
+int config_parse_label(
+ 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_(address_freep) Address *n = NULL;
+ Network *network = userdata;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = address_new_static(network, filename, section_line, &n);
+ if (r < 0)
+ return r;
+
+ if (!address_label_valid(rvalue)) {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Interface label is too long or invalid, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ r = free_and_strdup(&n->label, rvalue);
+ if (r < 0)
+ return log_oom();
+
+ n = NULL;
+
+ return 0;
+}
+
+int config_parse_lifetime(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) {
+ Network *network = userdata;
+ _cleanup_(address_freep) Address *n = NULL;
+ unsigned k;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = address_new_static(network, filename, section_line, &n);
+ if (r < 0)
+ return r;
+
+ if (STR_IN_SET(rvalue, "forever", "infinity")) {
+ n->cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME;
+ n = NULL;
+
+ return 0;
+ }
+
+ r = safe_atou(rvalue, &k);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse PreferredLifetime, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (k != 0)
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid PreferredLifetime value, ignoring: %d", k);
+ else {
+ n->cinfo.ifa_prefered = k;
+ n = NULL;
+ }
+
+ return 0;
+}
+
+int config_parse_address_flags(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) {
+ Network *network = userdata;
+ _cleanup_(address_freep) Address *n = NULL;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = address_new_static(network, filename, section_line, &n);
+ if (r < 0)
+ return r;
+
+ r = parse_boolean(rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse address flag, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (streq(lvalue, "HomeAddress"))
+ n->home_address = r;
+ else if (streq(lvalue, "DuplicateAddressDetection"))
+ n->duplicate_address_detection = r;
+ else if (streq(lvalue, "ManageTemporaryAddress"))
+ n->manage_temporary_address = r;
+ else if (streq(lvalue, "PrefixRoute"))
+ n->prefix_route = r;
+ else if (streq(lvalue, "AutoJoin"))
+ n->autojoin = r;
+
+ return 0;
+}
+
+int config_parse_address_scope(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) {
+ Network *network = userdata;
+ _cleanup_(address_freep) Address *n = NULL;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = address_new_static(network, filename, section_line, &n);
+ if (r < 0)
+ return r;
+
+ if (streq(rvalue, "host"))
+ n->scope = RT_SCOPE_HOST;
+ else if (streq(rvalue, "link"))
+ n->scope = RT_SCOPE_LINK;
+ else if (streq(rvalue, "global"))
+ n->scope = RT_SCOPE_UNIVERSE;
+ else {
+ r = safe_atou8(rvalue , &n->scope);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Could not parse address scope \"%s\", ignoring assignment: %m", rvalue);
+ return 0;
+ }
+ }
+
+ n = NULL;
+
+ return 0;
+}
+
+bool address_is_ready(const Address *a) {
+ assert(a);
+
+ if (a->family == AF_INET6)
+ return !(a->flags & IFA_F_TENTATIVE);
+ else
+ return !(a->flags & (IFA_F_TENTATIVE | IFA_F_DEPRECATED));
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-17 03:31:47 +0000