+++ /dev/null
-/***
- This file is part of avahi.
-
- avahi is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- avahi is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
- Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with avahi; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA.
-***/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <string.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-
-#include <avahi-common/error.h>
-#include <avahi-common/malloc.h>
-#include <avahi-common/domain.h>
-
-#include "iface.h"
-#include "dns.h"
-#include "socket.h"
-#include "announce.h"
-#include "util.h"
-#include "log.h"
-#include "multicast-lookup.h"
-#include "querier.h"
-
-void avahi_interface_address_update_rrs(AvahiInterfaceAddress *a, int remove_rrs) {
- AvahiInterfaceMonitor *m;
-
- assert(a);
- m = a->monitor;
-
- if (m->list_complete &&
- avahi_interface_address_is_relevant(a) &&
- avahi_interface_is_relevant(a->interface) &&
- !remove_rrs &&
- m->server->config.publish_addresses &&
- (m->server->state == AVAHI_SERVER_RUNNING ||
- m->server->state == AVAHI_SERVER_REGISTERING)) {
-
- /* Fill the entry group */
- if (!a->entry_group)
- a->entry_group = avahi_s_entry_group_new(m->server, avahi_host_rr_entry_group_callback, NULL);
-
- if (!a->entry_group) /* OOM */
- return;
-
- if (avahi_s_entry_group_is_empty(a->entry_group)) {
- char t[AVAHI_ADDRESS_STR_MAX];
- AvahiProtocol p;
-
- p = (a->interface->protocol == AVAHI_PROTO_INET && m->server->config.publish_a_on_ipv6) ||
- (a->interface->protocol == AVAHI_PROTO_INET6 && m->server->config.publish_aaaa_on_ipv4) ? AVAHI_PROTO_UNSPEC : a->interface->protocol;
-
- avahi_address_snprint(t, sizeof(t), &a->address);
- avahi_log_info("Registering new address record for %s on %s.%s.", t, a->interface->hardware->name, p == AVAHI_PROTO_UNSPEC ? "*" : avahi_proto_to_string(p));
-
- if (avahi_server_add_address(m->server, a->entry_group, a->interface->hardware->index, p, m->server->config.publish_no_reverse ? AVAHI_PUBLISH_NO_REVERSE : 0, NULL, &a->address) < 0) {
- avahi_log_warn(__FILE__": avahi_server_add_address() failed: %s", avahi_strerror(m->server->error));
- avahi_s_entry_group_free(a->entry_group);
- a->entry_group = NULL;
- return;
- }
-
- avahi_s_entry_group_commit(a->entry_group);
- }
- } else {
-
- /* Clear the entry group */
-
- if (a->entry_group && !avahi_s_entry_group_is_empty(a->entry_group)) {
- char t[AVAHI_ADDRESS_STR_MAX];
- avahi_address_snprint(t, sizeof(t), &a->address);
-
- avahi_log_info("Withdrawing address record for %s on %s.", t, a->interface->hardware->name);
-
- if (avahi_s_entry_group_get_state(a->entry_group) == AVAHI_ENTRY_GROUP_REGISTERING &&
- m->server->state == AVAHI_SERVER_REGISTERING)
- avahi_server_decrease_host_rr_pending(m->server);
-
- avahi_s_entry_group_reset(a->entry_group);
- }
- }
-}
-
-void avahi_interface_update_rrs(AvahiInterface *i, int remove_rrs) {
- AvahiInterfaceAddress *a;
-
- assert(i);
-
- for (a = i->addresses; a; a = a->address_next)
- avahi_interface_address_update_rrs(a, remove_rrs);
-}
-
-void avahi_hw_interface_update_rrs(AvahiHwInterface *hw, int remove_rrs) {
- AvahiInterface *i;
- AvahiInterfaceMonitor *m;
-
- assert(hw);
- m = hw->monitor;
-
- for (i = hw->interfaces; i; i = i->by_hardware_next)
- avahi_interface_update_rrs(i, remove_rrs);
-
- if (m->list_complete &&
- !remove_rrs &&
- m->server->config.publish_workstation &&
- (m->server->state == AVAHI_SERVER_RUNNING)) {
-
- if (!hw->entry_group)
- hw->entry_group = avahi_s_entry_group_new(m->server, avahi_host_rr_entry_group_callback, NULL);
-
- if (!hw->entry_group)
- return; /* OOM */
-
- if (avahi_s_entry_group_is_empty(hw->entry_group)) {
- char name[AVAHI_LABEL_MAX], unescaped[AVAHI_LABEL_MAX], mac[256];
- const char *p = m->server->host_name;
-
- avahi_unescape_label(&p, unescaped, sizeof(unescaped));
- avahi_format_mac_address(mac, sizeof(mac), hw->mac_address, hw->mac_address_size);
- snprintf(name, sizeof(name), "%s [%s]", unescaped, mac);
-
- if (avahi_server_add_service(m->server, hw->entry_group, hw->index, AVAHI_PROTO_UNSPEC, 0, name, "_workstation._tcp", NULL, NULL, 9, NULL) < 0) {
- avahi_log_warn(__FILE__": avahi_server_add_service() failed: %s", avahi_strerror(m->server->error));
- avahi_s_entry_group_free(hw->entry_group);
- hw->entry_group = NULL;
- } else
- avahi_s_entry_group_commit(hw->entry_group);
- }
-
- } else {
-
- if (hw->entry_group && !avahi_s_entry_group_is_empty(hw->entry_group)) {
-
- avahi_log_info("Withdrawing workstation service for %s.", hw->name);
-
- if (avahi_s_entry_group_get_state(hw->entry_group) == AVAHI_ENTRY_GROUP_REGISTERING &&
- m->server->state == AVAHI_SERVER_REGISTERING)
- avahi_server_decrease_host_rr_pending(m->server);
-
- avahi_s_entry_group_reset(hw->entry_group);
- }
- }
-}
-
-void avahi_interface_monitor_update_rrs(AvahiInterfaceMonitor *m, int remove_rrs) {
- AvahiHwInterface *hw;
-
- assert(m);
-
- for (hw = m->hw_interfaces; hw; hw = hw->hardware_next)
- avahi_hw_interface_update_rrs(hw, remove_rrs);
-}
-
-static int interface_mdns_mcast_join(AvahiInterface *i, int join) {
- char at[AVAHI_ADDRESS_STR_MAX];
- int r;
- assert(i);
-
- if (!!join == !!i->mcast_joined)
- return 0;
-
- if ((i->protocol == AVAHI_PROTO_INET6 && i->monitor->server->fd_ipv6 < 0) ||
- (i->protocol == AVAHI_PROTO_INET && i->monitor->server->fd_ipv4 < 0))
- return -1;
-
- if (join) {
- AvahiInterfaceAddress *a;
-
- /* Look if there's an address with global scope */
- for (a = i->addresses; a; a = a->address_next)
- if (a->global_scope)
- break;
-
- /* No address with a global scope has been found, so let's use
- * any. */
- if (!a)
- a = i->addresses;
-
- /* Hmm, there is no address available. */
- if (!a)
- return -1;
-
- i->local_mcast_address = a->address;
- }
-
- avahi_log_info("%s mDNS multicast group on interface %s.%s with address %s.",
- join ? "Joining" : "Leaving",
- i->hardware->name,
- avahi_proto_to_string(i->protocol),
- avahi_address_snprint(at, sizeof(at), &i->local_mcast_address));
-
- if (i->protocol == AVAHI_PROTO_INET6)
- r = avahi_mdns_mcast_join_ipv6(i->monitor->server->fd_ipv6, &i->local_mcast_address.data.ipv6, i->hardware->index, join);
- else {
- assert(i->protocol == AVAHI_PROTO_INET);
-
- r = avahi_mdns_mcast_join_ipv4(i->monitor->server->fd_ipv4, &i->local_mcast_address.data.ipv4, i->hardware->index, join);
- }
-
- if (r < 0)
- i->mcast_joined = 0;
- else
- i->mcast_joined = join;
-
- return 0;
-}
-
-static int interface_mdns_mcast_rejoin(AvahiInterface *i) {
- AvahiInterfaceAddress *a, *usable = NULL, *found = NULL;
- assert(i);
-
- if (!i->mcast_joined)
- return 0;
-
- /* Check whether old address we joined with is still available. If
- * not, rejoin using an other address. */
-
- for (a = i->addresses; a; a = a->address_next) {
- if (a->global_scope && !usable)
- usable = a;
-
- if (avahi_address_cmp(&a->address, &i->local_mcast_address) == 0) {
-
- if (a->global_scope)
- /* No action necessary: the address still exists and
- * has global scope. */
- return 0;
-
- found = a;
- }
- }
-
- if (found && !usable)
- /* No action necessary: the address still exists and no better one has been found */
- return 0;
-
- interface_mdns_mcast_join(i, 0);
- return interface_mdns_mcast_join(i, 1);
-}
-
-void avahi_interface_address_free(AvahiInterfaceAddress *a) {
- assert(a);
- assert(a->interface);
-
- avahi_interface_address_update_rrs(a, 1);
- AVAHI_LLIST_REMOVE(AvahiInterfaceAddress, address, a->interface->addresses, a);
-
- if (a->entry_group)
- avahi_s_entry_group_free(a->entry_group);
-
- interface_mdns_mcast_rejoin(a->interface);
-
- avahi_free(a);
-}
-
-void avahi_interface_free(AvahiInterface *i, int send_goodbye) {
- assert(i);
-
- /* Handle goodbyes and remove announcers */
- avahi_goodbye_interface(i->monitor->server, i, send_goodbye, 1);
- avahi_response_scheduler_force(i->response_scheduler);
- assert(!i->announcers);
-
- if (i->mcast_joined)
- interface_mdns_mcast_join(i, 0);
-
- /* Remove queriers */
- avahi_querier_free_all(i);
- avahi_hashmap_free(i->queriers_by_key);
-
- /* Remove local RRs */
- avahi_interface_update_rrs(i, 1);
-
- while (i->addresses)
- avahi_interface_address_free(i->addresses);
-
- avahi_response_scheduler_free(i->response_scheduler);
- avahi_query_scheduler_free(i->query_scheduler);
- avahi_probe_scheduler_free(i->probe_scheduler);
- avahi_cache_free(i->cache);
-
- AVAHI_LLIST_REMOVE(AvahiInterface, interface, i->monitor->interfaces, i);
- AVAHI_LLIST_REMOVE(AvahiInterface, by_hardware, i->hardware->interfaces, i);
-
- avahi_free(i);
-}
-
-void avahi_hw_interface_free(AvahiHwInterface *hw, int send_goodbye) {
- assert(hw);
-
- avahi_hw_interface_update_rrs(hw, 1);
-
- while (hw->interfaces)
- avahi_interface_free(hw->interfaces, send_goodbye);
-
- if (hw->entry_group)
- avahi_s_entry_group_free(hw->entry_group);
-
- AVAHI_LLIST_REMOVE(AvahiHwInterface, hardware, hw->monitor->hw_interfaces, hw);
- avahi_hashmap_remove(hw->monitor->hashmap, &hw->index);
-
- avahi_free(hw->name);
- avahi_free(hw);
-}
-
-AvahiInterface* avahi_interface_new(AvahiInterfaceMonitor *m, AvahiHwInterface *hw, AvahiProtocol protocol) {
- AvahiInterface *i;
-
- assert(m);
- assert(hw);
- assert(AVAHI_PROTO_VALID(protocol));
-
- if (!(i = avahi_new(AvahiInterface, 1)))
- goto fail; /* OOM */
-
- i->monitor = m;
- i->hardware = hw;
- i->protocol = protocol;
- i->announcing = 0;
- i->mcast_joined = 0;
-
- AVAHI_LLIST_HEAD_INIT(AvahiInterfaceAddress, i->addresses);
- AVAHI_LLIST_HEAD_INIT(AvahiAnnouncer, i->announcers);
-
- AVAHI_LLIST_HEAD_INIT(AvahiQuerier, i->queriers);
- i->queriers_by_key = avahi_hashmap_new((AvahiHashFunc) avahi_key_hash, (AvahiEqualFunc) avahi_key_equal, NULL, NULL);
-
- i->cache = avahi_cache_new(m->server, i);
- i->response_scheduler = avahi_response_scheduler_new(i);
- i->query_scheduler = avahi_query_scheduler_new(i);
- i->probe_scheduler = avahi_probe_scheduler_new(i);
-
- if (!i->cache || !i->response_scheduler || !i->query_scheduler || !i->probe_scheduler)
- goto fail; /* OOM */
-
- AVAHI_LLIST_PREPEND(AvahiInterface, by_hardware, hw->interfaces, i);
- AVAHI_LLIST_PREPEND(AvahiInterface, interface, m->interfaces, i);
-
- return i;
-
-fail:
-
- if (i) {
- if (i->cache)
- avahi_cache_free(i->cache);
- if (i->response_scheduler)
- avahi_response_scheduler_free(i->response_scheduler);
- if (i->query_scheduler)
- avahi_query_scheduler_free(i->query_scheduler);
- if (i->probe_scheduler)
- avahi_probe_scheduler_free(i->probe_scheduler);
- }
-
- return NULL;
-}
-
-AvahiHwInterface *avahi_hw_interface_new(AvahiInterfaceMonitor *m, AvahiIfIndex idx) {
- AvahiHwInterface *hw;
-
- assert(m);
- assert(AVAHI_IF_VALID(idx));
-
- if (!(hw = avahi_new(AvahiHwInterface, 1)))
- return NULL;
-
- hw->monitor = m;
- hw->name = NULL;
- hw->flags_ok = 0;
- hw->mtu = 1500;
- hw->index = idx;
- hw->mac_address_size = 0;
- hw->entry_group = NULL;
- hw->ratelimit_begin.tv_sec = 0;
- hw->ratelimit_begin.tv_usec = 0;
- hw->ratelimit_counter = 0;
-
- AVAHI_LLIST_HEAD_INIT(AvahiInterface, hw->interfaces);
- AVAHI_LLIST_PREPEND(AvahiHwInterface, hardware, m->hw_interfaces, hw);
-
- avahi_hashmap_insert(m->hashmap, &hw->index, hw);
-
- if (m->server->fd_ipv4 >= 0 || m->server->config.publish_a_on_ipv6)
- avahi_interface_new(m, hw, AVAHI_PROTO_INET);
- if (m->server->fd_ipv6 >= 0 || m->server->config.publish_aaaa_on_ipv4)
- avahi_interface_new(m, hw, AVAHI_PROTO_INET6);
-
- return hw;
-}
-
-AvahiInterfaceAddress *avahi_interface_address_new(AvahiInterfaceMonitor *m, AvahiInterface *i, const AvahiAddress *addr, unsigned prefix_len) {
- AvahiInterfaceAddress *a;
-
- assert(m);
- assert(i);
-
- if (!(a = avahi_new(AvahiInterfaceAddress, 1)))
- return NULL;
-
- a->interface = i;
- a->monitor = m;
- a->address = *addr;
- a->prefix_len = prefix_len;
- a->global_scope = 0;
- a->deprecated = 0;
- a->entry_group = NULL;
-
- AVAHI_LLIST_PREPEND(AvahiInterfaceAddress, address, i->addresses, a);
-
- return a;
-}
-
-void avahi_interface_check_relevant(AvahiInterface *i) {
- int b;
- AvahiInterfaceMonitor *m;
-
- assert(i);
- m = i->monitor;
-
- b = avahi_interface_is_relevant(i);
-
- if (m->list_complete && b && !i->announcing) {
- interface_mdns_mcast_join(i, 1);
-
- if (i->mcast_joined) {
- avahi_log_info("New relevant interface %s.%s for mDNS.", i->hardware->name, avahi_proto_to_string(i->protocol));
-
- i->announcing = 1;
- avahi_announce_interface(m->server, i);
- avahi_multicast_lookup_engine_new_interface(m->server->multicast_lookup_engine, i);
- }
-
- } else if (!b && i->announcing) {
- avahi_log_info("Interface %s.%s no longer relevant for mDNS.", i->hardware->name, avahi_proto_to_string(i->protocol));
-
- interface_mdns_mcast_join(i, 0);
-
- avahi_goodbye_interface(m->server, i, 0, 1);
- avahi_querier_free_all(i);
-
- avahi_response_scheduler_clear(i->response_scheduler);
- avahi_query_scheduler_clear(i->query_scheduler);
- avahi_probe_scheduler_clear(i->probe_scheduler);
- avahi_cache_flush(i->cache);
-
- i->announcing = 0;
-
- } else
- interface_mdns_mcast_rejoin(i);
-}
-
-void avahi_hw_interface_check_relevant(AvahiHwInterface *hw) {
- AvahiInterface *i;
-
- assert(hw);
-
- for (i = hw->interfaces; i; i = i->by_hardware_next)
- avahi_interface_check_relevant(i);
-}
-
-void avahi_interface_monitor_check_relevant(AvahiInterfaceMonitor *m) {
- AvahiInterface *i;
-
- assert(m);
-
- for (i = m->interfaces; i; i = i->interface_next)
- avahi_interface_check_relevant(i);
-}
-
-AvahiInterfaceMonitor *avahi_interface_monitor_new(AvahiServer *s) {
- AvahiInterfaceMonitor *m = NULL;
-
- if (!(m = avahi_new0(AvahiInterfaceMonitor, 1)))
- return NULL; /* OOM */
-
- m->server = s;
- m->list_complete = 0;
- m->hashmap = avahi_hashmap_new(avahi_int_hash, avahi_int_equal, NULL, NULL);
-
- AVAHI_LLIST_HEAD_INIT(AvahiInterface, m->interfaces);
- AVAHI_LLIST_HEAD_INIT(AvahiHwInterface, m->hw_interfaces);
-
- if (avahi_interface_monitor_init_osdep(m) < 0)
- goto fail;
-
- return m;
-
-fail:
- avahi_interface_monitor_free(m);
- return NULL;
-}
-
-void avahi_interface_monitor_free(AvahiInterfaceMonitor *m) {
- assert(m);
-
- while (m->hw_interfaces)
- avahi_hw_interface_free(m->hw_interfaces, 1);
-
- assert(!m->interfaces);
-
- avahi_interface_monitor_free_osdep(m);
-
- if (m->hashmap)
- avahi_hashmap_free(m->hashmap);
-
- avahi_free(m);
-}
-
-
-AvahiInterface* avahi_interface_monitor_get_interface(AvahiInterfaceMonitor *m, AvahiIfIndex idx, AvahiProtocol protocol) {
- AvahiHwInterface *hw;
- AvahiInterface *i;
-
- assert(m);
- assert(idx >= 0);
- assert(protocol != AVAHI_PROTO_UNSPEC);
-
- if (!(hw = avahi_interface_monitor_get_hw_interface(m, idx)))
- return NULL;
-
- for (i = hw->interfaces; i; i = i->by_hardware_next)
- if (i->protocol == protocol)
- return i;
-
- return NULL;
-}
-
-AvahiHwInterface* avahi_interface_monitor_get_hw_interface(AvahiInterfaceMonitor *m, AvahiIfIndex idx) {
- assert(m);
- assert(idx >= 0);
-
- return avahi_hashmap_lookup(m->hashmap, &idx);
-}
-
-AvahiInterfaceAddress* avahi_interface_monitor_get_address(AvahiInterfaceMonitor *m, AvahiInterface *i, const AvahiAddress *raddr) {
- AvahiInterfaceAddress *ia;
-
- assert(m);
- assert(i);
- assert(raddr);
-
- for (ia = i->addresses; ia; ia = ia->address_next)
- if (avahi_address_cmp(&ia->address, raddr) == 0)
- return ia;
-
- return NULL;
-}
-
-void avahi_interface_send_packet_unicast(AvahiInterface *i, AvahiDnsPacket *p, const AvahiAddress *a, uint16_t port) {
- assert(i);
- assert(p);
-
- if (!i->announcing)
- return;
-
- assert(!a || a->proto == i->protocol);
-
- if (i->monitor->server->config.ratelimit_interval > 0) {
- struct timeval now, end;
-
- gettimeofday(&now, NULL);
-
- end = i->hardware->ratelimit_begin;
- avahi_timeval_add(&end, i->monitor->server->config.ratelimit_interval);
-
- if (i->hardware->ratelimit_begin.tv_sec <= 0 ||
- avahi_timeval_compare(&end, &now) < 0) {
-
- i->hardware->ratelimit_begin = now;
- i->hardware->ratelimit_counter = 0;
- }
-
- if (i->hardware->ratelimit_counter > i->monitor->server->config.ratelimit_burst)
- return;
-
- i->hardware->ratelimit_counter++;
- }
-
- if (i->protocol == AVAHI_PROTO_INET && i->monitor->server->fd_ipv4 >= 0)
- avahi_send_dns_packet_ipv4(i->monitor->server->fd_ipv4, i->hardware->index, p, i->mcast_joined ? &i->local_mcast_address.data.ipv4 : NULL, a ? &a->data.ipv4 : NULL, port);
- else if (i->protocol == AVAHI_PROTO_INET6 && i->monitor->server->fd_ipv6 >= 0)
- avahi_send_dns_packet_ipv6(i->monitor->server->fd_ipv6, i->hardware->index, p, i->mcast_joined ? &i->local_mcast_address.data.ipv6 : NULL, a ? &a->data.ipv6 : NULL, port);
-}
-
-void avahi_interface_send_packet(AvahiInterface *i, AvahiDnsPacket *p) {
- assert(i);
- assert(p);
-
- avahi_interface_send_packet_unicast(i, p, NULL, 0);
-}
-
-int avahi_interface_post_query(AvahiInterface *i, AvahiKey *key, int immediately, unsigned *ret_id) {
- assert(i);
- assert(key);
-
- if (!i->announcing)
- return 0;
-
- return avahi_query_scheduler_post(i->query_scheduler, key, immediately, ret_id);
-}
-
-int avahi_interface_withraw_query(AvahiInterface *i, unsigned id) {
-
- return avahi_query_scheduler_withdraw_by_id(i->query_scheduler, id);
-}
-
-int avahi_interface_post_response(AvahiInterface *i, AvahiRecord *record, int flush_cache, const AvahiAddress *querier, int immediately) {
- assert(i);
- assert(record);
-
- if (!i->announcing)
- return 0;
-
- return avahi_response_scheduler_post(i->response_scheduler, record, flush_cache, querier, immediately);
-}
-
-int avahi_interface_post_probe(AvahiInterface *i, AvahiRecord *record, int immediately) {
- assert(i);
- assert(record);
-
- if (!i->announcing)
- return 0;
-
- return avahi_probe_scheduler_post(i->probe_scheduler, record, immediately);
-}
-
-int avahi_dump_caches(AvahiInterfaceMonitor *m, AvahiDumpCallback callback, void* userdata) {
- AvahiInterface *i;
- assert(m);
-
- for (i = m->interfaces; i; i = i->interface_next) {
- if (avahi_interface_is_relevant(i)) {
- char ln[256];
- snprintf(ln, sizeof(ln), ";;; INTERFACE %s.%s ;;;", i->hardware->name, avahi_proto_to_string(i->protocol));
- callback(ln, userdata);
- if (avahi_cache_dump(i->cache, callback, userdata) < 0)
- return -1;
- }
- }
-
- return 0;
-}
-
-static int avahi_interface_is_relevant_internal(AvahiInterface *i) {
- AvahiInterfaceAddress *a;
-
- assert(i);
-
- if (!i->hardware->flags_ok)
- return 0;
-
- for (a = i->addresses; a; a = a->address_next)
- if (avahi_interface_address_is_relevant(a))
- return 1;
-
- return 0;
-}
-
-int avahi_interface_is_relevant(AvahiInterface *i) {
- AvahiStringList *l;
- assert(i);
-
- for (l = i->monitor->server->config.deny_interfaces; l; l = l->next)
- if (strcasecmp((char*) l->text, i->hardware->name) == 0)
- return 0;
-
- if (i->monitor->server->config.allow_interfaces) {
-
- for (l = i->monitor->server->config.allow_interfaces; l; l = l->next)
- if (strcasecmp((char*) l->text, i->hardware->name) == 0)
- goto good;
-
- return 0;
- }
-
-good:
- return avahi_interface_is_relevant_internal(i);
-}
-
-int avahi_interface_address_is_relevant(AvahiInterfaceAddress *a) {
- AvahiInterfaceAddress *b;
- assert(a);
-
- /* Publish public and non-deprecated IP addresses */
- if (a->global_scope && !a->deprecated)
- return 1;
-
- /* Publish link-local and deprecated IP addresses only if they are
- * the only ones on the link */
- for (b = a->interface->addresses; b; b = b->address_next) {
- if (b == a)
- continue;
-
- if (b->global_scope && !b->deprecated)
- return 0;
- }
-
- return 1;
-}
-
-int avahi_interface_match(AvahiInterface *i, AvahiIfIndex idx, AvahiProtocol protocol) {
- assert(i);
-
- if (idx != AVAHI_IF_UNSPEC && idx != i->hardware->index)
- return 0;
-
- if (protocol != AVAHI_PROTO_UNSPEC && protocol != i->protocol)
- return 0;
-
- return 1;
-}
-
-void avahi_interface_monitor_walk(AvahiInterfaceMonitor *m, AvahiIfIndex interface, AvahiProtocol protocol, AvahiInterfaceMonitorWalkCallback callback, void* userdata) {
- assert(m);
- assert(callback);
-
- if (interface != AVAHI_IF_UNSPEC) {
- if (protocol != AVAHI_PROTO_UNSPEC) {
- AvahiInterface *i;
-
- if ((i = avahi_interface_monitor_get_interface(m, interface, protocol)))
- callback(m, i, userdata);
-
- } else {
- AvahiHwInterface *hw;
- AvahiInterface *i;
-
- if ((hw = avahi_interface_monitor_get_hw_interface(m, interface)))
- for (i = hw->interfaces; i; i = i->by_hardware_next)
- if (avahi_interface_match(i, interface, protocol))
- callback(m, i, userdata);
- }
-
- } else {
- AvahiInterface *i;
-
- for (i = m->interfaces; i; i = i->interface_next)
- if (avahi_interface_match(i, interface, protocol))
- callback(m, i, userdata);
- }
-}
-
-
-int avahi_address_is_local(AvahiInterfaceMonitor *m, const AvahiAddress *a) {
- AvahiInterface *i;
- AvahiInterfaceAddress *ia;
- assert(m);
- assert(a);
-
- for (i = m->interfaces; i; i = i->interface_next)
- for (ia = i->addresses; ia; ia = ia->address_next)
- if (avahi_address_cmp(a, &ia->address) == 0)
- return 1;
-
- return 0;
-}
-
-int avahi_interface_address_on_link(AvahiInterface *i, const AvahiAddress *a) {
- AvahiInterfaceAddress *ia;
-
- assert(i);
- assert(a);
-
- if (a->proto != i->protocol)
- return 0;
-
- for (ia = i->addresses; ia; ia = ia->address_next) {
-
- if (a->proto == AVAHI_PROTO_INET) {
- uint32_t m;
-
- m = ~(((uint32_t) -1) >> ia->prefix_len);
-
- if ((ntohl(a->data.ipv4.address) & m) == (ntohl(ia->address.data.ipv4.address) & m))
- return 1;
- } else {
- unsigned j;
- unsigned char pl;
- assert(a->proto == AVAHI_PROTO_INET6);
-
- pl = ia->prefix_len;
-
- for (j = 0; j < 16; j++) {
- uint8_t m;
-
- if (pl == 0)
- return 1;
-
- if (pl >= 8) {
- m = 0xFF;
- pl -= 8;
- } else {
- m = ~(0xFF >> pl);
- pl = 0;
- }
-
- if ((a->data.ipv6.address[j] & m) != (ia->address.data.ipv6.address[j] & m))
- break;
- }
- }
- }
-
- return 0;
-}
-
-int avahi_interface_has_address(AvahiInterfaceMonitor *m, AvahiIfIndex iface, const AvahiAddress *a) {
- AvahiInterface *i;
- AvahiInterfaceAddress *j;
-
- assert(m);
- assert(iface != AVAHI_IF_UNSPEC);
- assert(a);
-
- if (!(i = avahi_interface_monitor_get_interface(m, iface, a->proto)))
- return 0;
-
- for (j = i->addresses; j; j = j->address_next)
- if (avahi_address_cmp(a, &j->address) == 0)
- return 1;
-
- return 0;
-}
-
-AvahiIfIndex avahi_find_interface_for_address(AvahiInterfaceMonitor *m, const AvahiAddress *a) {
- AvahiInterface *i;
- assert(m);
-
- /* Some stupid OS don't support passing the interface index when a
- * packet is received. We have to work around that limitation by
- * looking for an interface that has the incoming address
- * attached. This is sometimes ambiguous, but we have to live with
- * it. */
-
- for (i = m->interfaces; i; i = i->interface_next) {
- AvahiInterfaceAddress *ai;
-
- if (i->protocol != a->proto)
- continue;
-
- for (ai = i->addresses; ai; ai = ai->address_next)
- if (avahi_address_cmp(a, &ai->address) == 0)
- return i->hardware->index;
- }
-
- return AVAHI_IF_UNSPEC;
-}
projects / catta / blobdiff