libavahi_core_la_SOURCES = \
timeeventq.c timeeventq.h\
iface.c iface.h \
- server.c server.h \
+ server.c server.h entry.c \
prioq.c prioq.h \
cache.c cache.h \
socket.c socket.h \
--- /dev/null
+/* $Id$ */
+
+/***
+ 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 <sys/socket.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include <sys/utsname.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#include <avahi-common/domain.h>
+#include <avahi-common/timeval.h>
+#include <avahi-common/malloc.h>
+#include <avahi-common/error.h>
+
+#include "server.h"
+#include "iface.h"
+#include "socket.h"
+#include "browse.h"
+#include "log.h"
+#include "util.h"
+
+void avahi_entry_free(AvahiServer*s, AvahiEntry *e) {
+ AvahiEntry *t;
+
+ assert(s);
+ assert(e);
+
+ avahi_goodbye_entry(s, e, 1, 1);
+
+ /* Remove from linked list */
+ AVAHI_LLIST_REMOVE(AvahiEntry, entries, s->entries, e);
+
+ /* Remove from hash table indexed by name */
+ t = avahi_hashmap_lookup(s->entries_by_key, e->record->key);
+ AVAHI_LLIST_REMOVE(AvahiEntry, by_key, t, e);
+ if (t)
+ avahi_hashmap_replace(s->entries_by_key, t->record->key, t);
+ else
+ avahi_hashmap_remove(s->entries_by_key, e->record->key);
+
+ /* Remove from associated group */
+ if (e->group)
+ AVAHI_LLIST_REMOVE(AvahiEntry, by_group, e->group->entries, e);
+
+ avahi_record_unref(e->record);
+ avahi_free(e);
+}
+
+void avahi_entry_group_free(AvahiServer *s, AvahiSEntryGroup *g) {
+ assert(s);
+ assert(g);
+
+ while (g->entries)
+ avahi_entry_free(s, g->entries);
+
+ if (g->register_time_event)
+ avahi_time_event_free(g->register_time_event);
+
+ AVAHI_LLIST_REMOVE(AvahiSEntryGroup, groups, s->groups, g);
+ avahi_free(g);
+}
+
+void avahi_cleanup_dead_entries(AvahiServer *s) {
+ assert(s);
+
+ if (s->need_group_cleanup) {
+ AvahiSEntryGroup *g, *next;
+
+ for (g = s->groups; g; g = next) {
+ next = g->groups_next;
+
+ if (g->dead)
+ avahi_entry_group_free(s, g);
+ }
+
+ s->need_group_cleanup = 0;
+ }
+
+ if (s->need_entry_cleanup) {
+ AvahiEntry *e, *next;
+
+ for (e = s->entries; e; e = next) {
+ next = e->entries_next;
+
+ if (e->dead)
+ avahi_entry_free(s, e);
+ }
+
+ s->need_entry_cleanup = 0;
+ }
+
+ if (s->need_browser_cleanup)
+ avahi_browser_cleanup(s);
+}
+
+static int check_record_conflict(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiRecord *r, AvahiPublishFlags flags) {
+ AvahiEntry *e;
+
+ assert(s);
+ assert(r);
+
+ for (e = avahi_hashmap_lookup(s->entries_by_key, r->key); e; e = e->by_key_next) {
+ if (e->dead)
+ continue;
+
+ if (!(flags & AVAHI_PUBLISH_UNIQUE) && !(e->flags & AVAHI_PUBLISH_UNIQUE))
+ continue;
+
+ if ((flags & AVAHI_PUBLISH_ALLOW_MULTIPLE) && (e->flags & AVAHI_PUBLISH_ALLOW_MULTIPLE) )
+ continue;
+
+ if ((interface <= 0 ||
+ e->interface <= 0 ||
+ e->interface == interface) &&
+ (protocol == AVAHI_PROTO_UNSPEC ||
+ e->protocol == AVAHI_PROTO_UNSPEC ||
+ e->protocol == protocol))
+
+ return -1;
+ }
+
+ return 0;
+}
+
+int avahi_server_add(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ AvahiRecord *r) {
+
+ assert(s);
+ assert(r);
+
+ if (!AVAHI_IF_VALID(interface))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE);
+
+ if (!AVAHI_PROTO_VALID(protocol))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL);
+
+ if (!AVAHI_FLAGS_VALID(
+ flags,
+ AVAHI_PUBLISH_NO_ANNOUNCE|
+ AVAHI_PUBLISH_NO_PROBE|
+ AVAHI_PUBLISH_UNIQUE|
+ AVAHI_PUBLISH_ALLOW_MULTIPLE|
+ AVAHI_PUBLISH_IS_PROXY|
+ AVAHI_PUBLISH_UPDATE))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS);
+
+ if (!avahi_is_valid_domain_name(r->key->name))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
+
+ if (r->ttl == 0)
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_TTL);
+
+ if (avahi_key_is_pattern(r->key))
+ return avahi_server_set_errno(s, AVAHI_ERR_IS_PATTERN);
+
+ if (!avahi_record_is_valid(r))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_RECORD);
+
+ if (flags & AVAHI_PUBLISH_UPDATE) {
+ AvahiEntry *e;
+ AvahiRecord *old_record;
+ int is_first = 1;
+
+ /* Update and existing record */
+
+ /* Find the first matching entry */
+ for (e = avahi_hashmap_lookup(s->entries_by_key, r->key); e; e = e->by_key_next) {
+ if (!e->dead && e->group == g && e->interface == interface && e->protocol == protocol)
+ break;
+
+ is_first = 0;
+ }
+
+ /* Hmm, nothing found? */
+ if (!e)
+ return avahi_server_set_errno(s, AVAHI_ERR_NOT_FOUND);
+
+ /* Update the entry */
+ old_record = e->record;
+ e->record = avahi_record_ref(r);
+ e->flags = flags;
+
+ /* Announce our changes when needed */
+ if (!avahi_record_equal_no_ttl(old_record, r) && (!g || g->state != AVAHI_ENTRY_GROUP_UNCOMMITED)) {
+
+ /* Remove the old entry from all caches, if needed */
+ if (!(e->flags & AVAHI_PUBLISH_UNIQUE))
+ avahi_goodbye_entry(s, e, 1, 0);
+
+ /* Reannounce our updated entry */
+ avahi_reannounce_entry(s, e);
+ }
+
+ /* If we were the first entry in the list, we need to update the key */
+ if (is_first)
+ avahi_hashmap_replace(s->entries_by_key, e->record->key, e);
+
+ avahi_record_unref(old_record);
+
+ } else {
+ AvahiEntry *e, *t;
+
+ /* Add a new record */
+
+ if (check_record_conflict(s, interface, protocol, r, flags) < 0)
+ return avahi_server_set_errno(s, AVAHI_ERR_LOCAL_COLLISION);
+
+ if (!(e = avahi_new(AvahiEntry, 1)))
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+
+ e->server = s;
+ e->record = avahi_record_ref(r);
+ e->group = g;
+ e->interface = interface;
+ e->protocol = protocol;
+ e->flags = flags;
+ e->dead = 0;
+
+ AVAHI_LLIST_HEAD_INIT(AvahiAnnouncer, e->announcers);
+
+ AVAHI_LLIST_PREPEND(AvahiEntry, entries, s->entries, e);
+
+ /* Insert into hash table indexed by name */
+ t = avahi_hashmap_lookup(s->entries_by_key, e->record->key);
+ AVAHI_LLIST_PREPEND(AvahiEntry, by_key, t, e);
+ avahi_hashmap_replace(s->entries_by_key, e->record->key, t);
+
+ /* Insert into group list */
+ if (g)
+ AVAHI_LLIST_PREPEND(AvahiEntry, by_group, g->entries, e);
+
+ avahi_announce_entry(s, e);
+ }
+
+ return AVAHI_OK;
+}
+
+const AvahiRecord *avahi_server_iterate(AvahiServer *s, AvahiSEntryGroup *g, void **state) {
+ AvahiEntry **e = (AvahiEntry**) state;
+ assert(s);
+ assert(e);
+
+ if (!*e)
+ *e = g ? g->entries : s->entries;
+
+ while (*e && (*e)->dead)
+ *e = g ? (*e)->by_group_next : (*e)->entries_next;
+
+ if (!*e)
+ return NULL;
+
+ return avahi_record_ref((*e)->record);
+}
+
+int avahi_server_dump(AvahiServer *s, AvahiDumpCallback callback, void* userdata) {
+ AvahiEntry *e;
+
+ assert(s);
+ assert(callback);
+
+ callback(";;; ZONE DUMP FOLLOWS ;;;", userdata);
+
+ for (e = s->entries; e; e = e->entries_next) {
+ char *t;
+ char ln[256];
+
+ if (e->dead)
+ continue;
+
+ if (!(t = avahi_record_to_string(e->record)))
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+
+ snprintf(ln, sizeof(ln), "%s ; iface=%i proto=%i", t, e->interface, e->protocol);
+ avahi_free(t);
+
+ callback(ln, userdata);
+ }
+
+ avahi_dump_caches(s->monitor, callback, userdata);
+
+ if (s->wide_area_lookup_engine)
+ avahi_wide_area_cache_dump(s->wide_area_lookup_engine, callback, userdata);
+ return AVAHI_OK;
+}
+
+int avahi_server_add_ptr(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ uint32_t ttl,
+ const char *name,
+ const char *dest) {
+
+ AvahiRecord *r;
+ int ret;
+
+ assert(s);
+ assert(dest);
+
+ if ((name && !avahi_is_valid_domain_name(name)) || !avahi_is_valid_domain_name(dest))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
+
+ if (!name)
+ name = s->host_name_fqdn;
+
+ if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR, ttl)))
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+
+ r->data.ptr.name = avahi_normalize_name_strdup(dest);
+ ret = avahi_server_add(s, g, interface, protocol, flags, r);
+ avahi_record_unref(r);
+ return ret;
+}
+
+int avahi_server_add_address(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *name,
+ AvahiAddress *a) {
+
+ char *n = NULL;
+ int ret = AVAHI_OK;
+
+ assert(s);
+ assert(a);
+
+ if (!AVAHI_IF_VALID(interface))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE);
+
+ if (!AVAHI_PROTO_VALID(protocol) || !AVAHI_PROTO_VALID(a->proto))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL);
+
+ if (!AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_NO_REVERSE|AVAHI_PUBLISH_NO_ANNOUNCE|AVAHI_PUBLISH_NO_PROBE|AVAHI_PUBLISH_UPDATE))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS);
+
+ if (name && !avahi_is_valid_domain_name(name))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
+
+ if (!name)
+ name = s->host_name_fqdn;
+ else {
+ if (!(n = avahi_normalize_name_strdup(name)))
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+
+ name = n;
+ }
+
+ if (a->proto == AVAHI_PROTO_INET) {
+ AvahiRecord *r;
+
+ if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, AVAHI_DEFAULT_TTL_HOST_NAME))) {
+ ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ r->data.a.address = a->data.ipv4;
+ ret = avahi_server_add(s, g, interface, protocol, (flags & ~ AVAHI_PUBLISH_NO_REVERSE) | AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r);
+ avahi_record_unref(r);
+
+ if (ret < 0)
+ goto fail;
+
+ if (!(flags & AVAHI_PUBLISH_NO_REVERSE)) {
+ char *reverse;
+
+ if (!(reverse = avahi_reverse_lookup_name_ipv4(&a->data.ipv4))) {
+ ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
+ avahi_free(reverse);
+ }
+
+ } else {
+ AvahiRecord *r;
+
+ assert(a->proto == AVAHI_PROTO_INET6);
+
+ if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA, AVAHI_DEFAULT_TTL_HOST_NAME))) {
+ ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ r->data.aaaa.address = a->data.ipv6;
+ ret = avahi_server_add(s, g, interface, protocol, (flags & ~ AVAHI_PUBLISH_NO_REVERSE) | AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r);
+ avahi_record_unref(r);
+
+ if (ret < 0)
+ goto fail;
+
+ if (!(flags & AVAHI_PUBLISH_NO_REVERSE)) {
+ char *reverse;
+
+ if (!(reverse = avahi_reverse_lookup_name_ipv6_arpa(&a->data.ipv6))) {
+ ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
+ avahi_free(reverse);
+
+ if (ret < 0)
+ goto fail;
+
+ if (!(reverse = avahi_reverse_lookup_name_ipv6_int(&a->data.ipv6))) {
+ ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
+ avahi_free(reverse);
+ }
+ }
+
+fail:
+
+ avahi_free(n);
+
+ return ret;
+}
+
+static int server_add_txt_strlst_nocopy(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ uint32_t ttl,
+ const char *name,
+ AvahiStringList *strlst) {
+
+ AvahiRecord *r;
+ int ret;
+
+ assert(s);
+
+ if (!(r = avahi_record_new_full(name ? name : s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT, ttl))) {
+ avahi_string_list_free(strlst);
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ }
+
+ r->data.txt.string_list = strlst;
+ ret = avahi_server_add(s, g, interface, protocol, flags, r);
+ avahi_record_unref(r);
+
+ return ret;
+}
+
+int avahi_server_add_txt_strlst(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ uint32_t ttl,
+ const char *name,
+ AvahiStringList *strlst) {
+
+ assert(s);
+
+ return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_copy(strlst));
+}
+
+int avahi_server_add_txt_va(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ uint32_t ttl,
+ const char *name,
+ va_list va) {
+
+ assert(s);
+
+ return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_new_va(va));
+}
+
+int avahi_server_add_txt(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ uint32_t ttl,
+ const char *name,
+ ...) {
+
+ va_list va;
+ int ret;
+
+ assert(s);
+
+ va_start(va, name);
+ ret = avahi_server_add_txt_va(s, g, interface, protocol, flags, ttl, name, va);
+ va_end(va);
+
+ return ret;
+}
+
+static AvahiStringList *add_magic_cookie(
+ AvahiServer *s,
+ AvahiStringList *strlst) {
+
+ assert(s);
+
+ if (!s->config.add_service_cookie)
+ return strlst;
+
+ if (avahi_string_list_find(strlst, AVAHI_SERVICE_COOKIE))
+ /* This string list already contains a magic cookie */
+ return strlst;
+
+ return avahi_string_list_add_printf(strlst, AVAHI_SERVICE_COOKIE"=%u", s->local_service_cookie);
+}
+
+static int server_add_service_strlst_nocopy(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *name,
+ const char *type,
+ const char *domain,
+ const char *host,
+ uint16_t port,
+ AvahiStringList *strlst) {
+
+ char ptr_name[AVAHI_DOMAIN_NAME_MAX], svc_name[AVAHI_DOMAIN_NAME_MAX], enum_ptr[AVAHI_DOMAIN_NAME_MAX], *h = NULL;
+ AvahiRecord *r = NULL;
+ int ret = AVAHI_OK;
+
+ assert(s);
+ assert(type);
+ assert(name);
+
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_NO_COOKIE|AVAHI_PUBLISH_IS_PROXY|AVAHI_PUBLISH_UPDATE), AVAHI_ERR_INVALID_FLAGS);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !host || avahi_is_valid_domain_name(host), AVAHI_ERR_INVALID_HOST_NAME);
+
+ if (!domain)
+ domain = s->domain_name;
+
+ if (!host)
+ host = s->host_name_fqdn;
+
+ if (!(h = avahi_normalize_name_strdup(host))) {
+ ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0 ||
+ (ret = avahi_service_name_join(ptr_name, sizeof(ptr_name), NULL, type, domain)) < 0 ||
+ (ret = avahi_service_name_join(enum_ptr, sizeof(enum_ptr), NULL, "_services._dns-sd._udp", domain)) < 0) {
+ avahi_server_set_errno(s, ret);
+ goto fail;
+ }
+
+ /* Add service enumeration PTR record */
+
+ if ((ret = avahi_server_add_ptr(s, g, interface, protocol, flags & AVAHI_PUBLISH_IS_PROXY, AVAHI_DEFAULT_TTL, ptr_name, svc_name)) < 0)
+ goto fail;
+
+ /* Add SRV record */
+
+ if (!(r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) {
+ ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ r->data.srv.priority = 0;
+ r->data.srv.weight = 0;
+ r->data.srv.port = port;
+ r->data.srv.name = h;
+ h = NULL;
+ ret = avahi_server_add(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY) | AVAHI_PUBLISH_UNIQUE, r);
+ avahi_record_unref(r);
+
+ if (ret < 0)
+ goto fail;
+
+ /* Add TXT record */
+
+ if (!(flags & AVAHI_PUBLISH_NO_COOKIE))
+ strlst = add_magic_cookie(s, strlst);
+
+ ret = server_add_txt_strlst_nocopy(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY) | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL, svc_name, strlst);
+ strlst = NULL;
+
+ if (ret < 0)
+ goto fail;
+
+ /* Add service type enumeration record */
+
+ ret = avahi_server_add_ptr(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY), AVAHI_DEFAULT_TTL, enum_ptr, ptr_name);
+
+fail:
+
+ avahi_string_list_free(strlst);
+ avahi_free(h);
+
+ return ret;
+}
+
+int avahi_server_add_service_strlst(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *name,
+ const char *type,
+ const char *domain,
+ const char *host,
+ uint16_t port,
+ AvahiStringList *strlst) {
+
+ assert(s);
+ assert(type);
+ assert(name);
+
+ return server_add_service_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, host, port, avahi_string_list_copy(strlst));
+}
+
+int avahi_server_add_service_va(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *name,
+ const char *type,
+ const char *domain,
+ const char *host,
+ uint16_t port,
+ va_list va) {
+
+ assert(s);
+ assert(type);
+ assert(name);
+
+ return server_add_service_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, host, port, avahi_string_list_new_va(va));
+}
+
+int avahi_server_add_service(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *name,
+ const char *type,
+ const char *domain,
+ const char *host,
+ uint16_t port,
+ ... ){
+
+ va_list va;
+ int ret;
+
+ va_start(va, port);
+ ret = avahi_server_add_service_va(s, g, interface, protocol, flags, name, type, domain, host, port, va);
+ va_end(va);
+
+ return ret;
+}
+
+static int server_update_service_txt_strlst_nocopy(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *name,
+ const char *type,
+ const char *domain,
+ AvahiStringList *strlst) {
+
+ char svc_name[AVAHI_DOMAIN_NAME_MAX];
+ int ret = AVAHI_OK;
+
+ assert(s);
+ assert(type);
+ assert(name);
+
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_IS_PROXY|AVAHI_PUBLISH_NO_COOKIE), AVAHI_ERR_INVALID_FLAGS);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
+
+ if (!domain)
+ domain = s->domain_name;
+
+ if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0) {
+ avahi_server_set_errno(s, ret);
+ goto fail;
+ }
+
+ /* Add TXT record */
+ if (!(flags & AVAHI_PUBLISH_NO_COOKIE))
+ strlst = add_magic_cookie(s, strlst);
+
+ ret = server_add_txt_strlst_nocopy(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY) | AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_UPDATE, AVAHI_DEFAULT_TTL, svc_name, strlst);
+ strlst = NULL;
+
+fail:
+
+ avahi_string_list_free(strlst);
+
+ return ret;
+}
+
+int avahi_server_update_service_txt_strlst(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *name,
+ const char *type,
+ const char *domain,
+ AvahiStringList *strlst) {
+
+ return server_update_service_txt_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, avahi_string_list_copy(strlst));
+}
+
+/** Update the TXT record for a service with the NULL terminated list of strings of the va_list. */
+int avahi_server_update_service_txt_va(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *name,
+ const char *type,
+ const char *domain,
+ va_list va) {
+
+ return server_update_service_txt_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, avahi_string_list_new_va(va));
+}
+
+/** Update the TXT record for a service with the NULL termonate list of strings */
+int avahi_server_update_service_txt(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *name,
+ const char *type,
+ const char *domain,
+ ...) {
+
+ va_list va;
+ int ret;
+
+ va_start(va, domain);
+ ret = avahi_server_update_service_txt_va(s, g, interface, protocol, flags, name, type, domain, va);
+ va_end(va);
+
+ return ret;
+}
+
+int avahi_server_add_service_subtype(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *name,
+ const char *type,
+ const char *domain,
+ const char *subtype) {
+
+ int ret = AVAHI_OK;
+ char svc_name[AVAHI_DOMAIN_NAME_MAX], ptr_name[AVAHI_DOMAIN_NAME_MAX];
+
+ assert(name);
+ assert(type);
+ assert(subtype);
+
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags, 0), AVAHI_ERR_INVALID_FLAGS);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_subtype(subtype), AVAHI_ERR_INVALID_SERVICE_SUBTYPE);
+
+ if (!domain)
+ domain = s->domain_name;
+
+ if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0 ||
+ (ret = avahi_service_name_join(ptr_name, sizeof(ptr_name), NULL, subtype, domain)) < 0) {
+ avahi_server_set_errno(s, ret);
+ goto fail;
+ }
+
+ if ((ret = avahi_server_add_ptr(s, g, interface, protocol, flags & AVAHI_PUBLISH_IS_PROXY, AVAHI_DEFAULT_TTL, ptr_name, svc_name)) < 0)
+ goto fail;
+
+fail:
+
+ return ret;
+}
+
+static void hexstring(char *s, size_t sl, const void *p, size_t pl) {
+ static const char hex[] = "0123456789abcdef";
+ int b = 0;
+ const uint8_t *k = p;
+
+ while (sl > 1 && pl > 0) {
+ *(s++) = hex[(b ? *k : *k >> 4) & 0xF];
+
+ if (b) {
+ k++;
+ pl--;
+ }
+
+ b = !b;
+
+ sl--;
+ }
+
+ if (sl > 0)
+ *s = 0;
+}
+
+int avahi_server_add_dns_server_address(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *domain,
+ AvahiDNSServerType type,
+ const AvahiAddress *address,
+ uint16_t port /** should be 53 */) {
+
+ AvahiRecord *r;
+ int ret;
+ char n[64], h[64];
+
+ assert(s);
+ assert(address);
+
+ if (!AVAHI_IF_VALID(interface))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE);
+
+ if (!AVAHI_PROTO_VALID(protocol) || !AVAHI_PROTO_VALID(address->proto))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL);
+
+ if (!AVAHI_FLAGS_VALID(flags, 0) || (type != AVAHI_DNS_SERVER_UPDATE && type != AVAHI_DNS_SERVER_RESOLVE))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS);
+
+ if (port == 0)
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT);
+
+ if (domain && !avahi_is_valid_domain_name(domain))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
+
+ if (!domain)
+ domain = s->domain_name;
+
+ if (address->proto == AVAHI_PROTO_INET) {
+ hexstring(h, sizeof(h), &address->data, sizeof(AvahiIPv4Address));
+ snprintf(n, sizeof(n), "ip-%s.%s", h, domain);
+ r = avahi_record_new_full(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, AVAHI_DEFAULT_TTL_HOST_NAME);
+ r->data.a.address = address->data.ipv4;
+ } else {
+ hexstring(h, sizeof(h), &address->data, sizeof(AvahiIPv6Address));
+ snprintf(n, sizeof(n), "ip6-%s.%s", h, domain);
+ r = avahi_record_new_full(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA, AVAHI_DEFAULT_TTL_HOST_NAME);
+ r->data.aaaa.address = address->data.ipv6;
+ }
+
+ if (!r)
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+
+ ret = avahi_server_add(s, g, interface, protocol, AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r);
+ avahi_record_unref(r);
+
+ if (ret < 0)
+ return ret;
+
+ return avahi_server_add_dns_server_name(s, g, interface, protocol, flags, domain, type, n, port);
+}
+
+int avahi_server_add_dns_server_name(
+ AvahiServer *s,
+ AvahiSEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiPublishFlags flags,
+ const char *domain,
+ AvahiDNSServerType type,
+ const char *name,
+ uint16_t port /** should be 53 */) {
+
+ int ret = -1;
+ char t[256], *d = NULL, *n = NULL;
+ AvahiRecord *r;
+
+ assert(s);
+ assert(name);
+
+ if (!AVAHI_IF_VALID(interface))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE);
+
+ if (!AVAHI_PROTO_VALID(protocol))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL);
+
+ if (!AVAHI_FLAGS_VALID(flags, 0) || (type != AVAHI_DNS_SERVER_UPDATE && type != AVAHI_DNS_SERVER_RESOLVE))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS);
+
+ if (port == 0)
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT);
+
+ if (!avahi_is_valid_domain_name(name))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
+
+ if (domain && !avahi_is_valid_domain_name(domain))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
+
+ if (!domain)
+ domain = s->domain_name;
+
+ if (!(n = avahi_normalize_name_strdup(name)) ||
+ !(d = avahi_normalize_name_strdup(domain))) {
+ avahi_free(n);
+ avahi_free(d);
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ }
+
+ snprintf(t, sizeof(t), "%s.%s", type == AVAHI_DNS_SERVER_RESOLVE ? "_domain._udp" : "_dns-update._udp", d);
+ avahi_free(d);
+
+ if (!(r = avahi_record_new_full(t, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) {
+ avahi_free(n);
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ }
+
+ r->data.srv.priority = 0;
+ r->data.srv.weight = 0;
+ r->data.srv.port = port;
+ r->data.srv.name = n;
+ ret = avahi_server_add(s, g, interface, protocol, AVAHI_PUBLISH_NULL, r);
+ avahi_record_unref(r);
+
+ return ret;
+}
+
+void avahi_s_entry_group_change_state(AvahiSEntryGroup *g, AvahiEntryGroupState state) {
+ assert(g);
+
+ if (g->state == state)
+ return;
+
+ assert(state <= AVAHI_ENTRY_GROUP_COLLISION);
+
+ if (g->state == AVAHI_ENTRY_GROUP_ESTABLISHED) {
+
+ /* If the entry group was established for a time longer then
+ * 5s, reset the establishment trial counter */
+
+ if (avahi_age(&g->established_at) > 5000000)
+ g->n_register_try = 0;
+ }
+
+ if (state == AVAHI_ENTRY_GROUP_ESTABLISHED)
+
+ /* If the entry group is now established, remember the time
+ * this happened */
+
+ gettimeofday(&g->established_at, NULL);
+
+ g->state = state;
+
+ if (g->callback)
+ g->callback(g->server, g, state, g->userdata);
+}
+
+AvahiSEntryGroup *avahi_s_entry_group_new(AvahiServer *s, AvahiSEntryGroupCallback callback, void* userdata) {
+ AvahiSEntryGroup *g;
+
+ assert(s);
+
+ if (!(g = avahi_new(AvahiSEntryGroup, 1))) {
+ avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ return NULL;
+ }
+
+ g->server = s;
+ g->callback = callback;
+ g->userdata = userdata;
+ g->dead = 0;
+ g->state = AVAHI_ENTRY_GROUP_UNCOMMITED;
+ g->n_probing = 0;
+ g->n_register_try = 0;
+ g->register_time_event = NULL;
+ g->register_time.tv_sec = 0;
+ g->register_time.tv_usec = 0;
+ AVAHI_LLIST_HEAD_INIT(AvahiEntry, g->entries);
+
+ AVAHI_LLIST_PREPEND(AvahiSEntryGroup, groups, s->groups, g);
+ return g;
+}
+
+void avahi_s_entry_group_free(AvahiSEntryGroup *g) {
+ AvahiEntry *e;
+
+ assert(g);
+ assert(g->server);
+
+ for (e = g->entries; e; e = e->by_group_next) {
+ if (!e->dead) {
+ avahi_goodbye_entry(g->server, e, 1, 1);
+ e->dead = 1;
+ }
+ }
+
+ if (g->register_time_event) {
+ avahi_time_event_free(g->register_time_event);
+ g->register_time_event = NULL;
+ }
+
+ g->dead = 1;
+
+ g->server->need_group_cleanup = 1;
+ g->server->need_entry_cleanup = 1;
+}
+
+static void entry_group_commit_real(AvahiSEntryGroup *g) {
+ assert(g);
+
+ gettimeofday(&g->register_time, NULL);
+
+ avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
+
+ if (!g->dead) {
+ avahi_announce_group(g->server, g);
+ avahi_s_entry_group_check_probed(g, 0);
+ }
+}
+
+static void entry_group_register_time_event_callback(AvahiTimeEvent *e, void* userdata) {
+ AvahiSEntryGroup *g = userdata;
+ assert(g);
+
+/* avahi_log_debug("Holdoff passed, waking up and going on."); */
+
+ avahi_time_event_free(g->register_time_event);
+ g->register_time_event = NULL;
+
+ /* Holdoff time passed, so let's start probing */
+ entry_group_commit_real(g);
+}
+
+int avahi_s_entry_group_commit(AvahiSEntryGroup *g) {
+ struct timeval now;
+
+ assert(g);
+ assert(!g->dead);
+
+ if (g->state != AVAHI_ENTRY_GROUP_UNCOMMITED && g->state != AVAHI_ENTRY_GROUP_COLLISION)
+ return avahi_server_set_errno(g->server, AVAHI_ERR_BAD_STATE);
+
+ g->n_register_try++;
+
+ avahi_timeval_add(&g->register_time,
+ 1000*(g->n_register_try >= AVAHI_RR_RATE_LIMIT_COUNT ?
+ AVAHI_RR_HOLDOFF_MSEC_RATE_LIMIT :
+ AVAHI_RR_HOLDOFF_MSEC));
+
+ gettimeofday(&now, NULL);
+
+ if (avahi_timeval_compare(&g->register_time, &now) <= 0) {
+ /* Holdoff time passed, so let's start probing */
+/* avahi_log_debug("Holdoff passed, directly going on."); */
+
+ entry_group_commit_real(g);
+ } else {
+/* avahi_log_debug("Holdoff not passed, sleeping."); */
+
+ /* Holdoff time has not yet passed, so let's wait */
+ assert(!g->register_time_event);
+ g->register_time_event = avahi_time_event_new(g->server->time_event_queue, &g->register_time, entry_group_register_time_event_callback, g);
+
+ avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
+ }
+
+ return AVAHI_OK;
+}
+
+void avahi_s_entry_group_reset(AvahiSEntryGroup *g) {
+ AvahiEntry *e;
+ assert(g);
+
+ for (e = g->entries; e; e = e->by_group_next) {
+ if (!e->dead) {
+ avahi_goodbye_entry(g->server, e, 1, 1);
+ e->dead = 1;
+ }
+ }
+ g->server->need_entry_cleanup = 1;
+
+ if (g->register_time_event) {
+ avahi_time_event_free(g->register_time_event);
+ g->register_time_event = NULL;
+ }
+
+ g->n_probing = 0;
+
+ gettimeofday(&g->register_time, NULL);
+
+ avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_UNCOMMITED);
+}
+
+int avahi_entry_is_commited(AvahiEntry *e) {
+ assert(e);
+ assert(!e->dead);
+
+ return !e->group ||
+ e->group->state == AVAHI_ENTRY_GROUP_REGISTERING ||
+ e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED;
+}
+
+AvahiEntryGroupState avahi_s_entry_group_get_state(AvahiSEntryGroup *g) {
+ assert(g);
+ assert(!g->dead);
+
+ return g->state;
+}
+
+void avahi_s_entry_group_set_data(AvahiSEntryGroup *g, void* userdata) {
+ assert(g);
+
+ g->userdata = userdata;
+}
+
+void* avahi_s_entry_group_get_data(AvahiSEntryGroup *g) {
+ assert(g);
+
+ return g->userdata;
+}
+
+int avahi_s_entry_group_is_empty(AvahiSEntryGroup *g) {
+ AvahiEntry *e;
+ assert(g);
+
+ /* Look for an entry that is not dead */
+ for (e = g->entries; e; e = e->by_group_next)
+ if (!e->dead)
+ return 0;
+
+ return 1;
+}
#include "log.h"
#include "util.h"
-#define AVAHI_RR_HOLDOFF_MSEC 1000
-#define AVAHI_RR_HOLDOFF_MSEC_RATE_LIMIT 60000
-#define AVAHI_RR_RATE_LIMIT_COUNT 15
-
-static void free_entry(AvahiServer*s, AvahiEntry *e) {
- AvahiEntry *t;
-
- assert(s);
- assert(e);
-
- avahi_goodbye_entry(s, e, 1, 1);
-
- /* Remove from linked list */
- AVAHI_LLIST_REMOVE(AvahiEntry, entries, s->entries, e);
-
- /* Remove from hash table indexed by name */
- t = avahi_hashmap_lookup(s->entries_by_key, e->record->key);
- AVAHI_LLIST_REMOVE(AvahiEntry, by_key, t, e);
- if (t)
- avahi_hashmap_replace(s->entries_by_key, t->record->key, t);
- else
- avahi_hashmap_remove(s->entries_by_key, e->record->key);
-
- /* Remove from associated group */
- if (e->group)
- AVAHI_LLIST_REMOVE(AvahiEntry, by_group, e->group->entries, e);
-
- avahi_record_unref(e->record);
- avahi_free(e);
-}
-
-static void free_group(AvahiServer *s, AvahiSEntryGroup *g) {
- assert(s);
- assert(g);
-
- while (g->entries)
- free_entry(s, g->entries);
-
- if (g->register_time_event)
- avahi_time_event_free(g->register_time_event);
-
- AVAHI_LLIST_REMOVE(AvahiSEntryGroup, groups, s->groups, g);
- avahi_free(g);
-}
-
-static void cleanup_dead(AvahiServer *s) {
- assert(s);
-
- if (s->need_group_cleanup) {
- AvahiSEntryGroup *g, *next;
-
- for (g = s->groups; g; g = next) {
- next = g->groups_next;
-
- if (g->dead)
- free_group(s, g);
- }
-
- s->need_group_cleanup = 0;
- }
-
- if (s->need_entry_cleanup) {
- AvahiEntry *e, *next;
-
- for (e = s->entries; e; e = next) {
- next = e->entries_next;
-
- if (e->dead)
- free_entry(s, e);
- }
-
- s->need_entry_cleanup = 0;
- }
-
- if (s->need_browser_cleanup)
- avahi_browser_cleanup(s);
-}
-
static void enum_aux_records(AvahiServer *s, AvahiInterface *i, const char *name, uint16_t type, void (*callback)(AvahiServer *s, AvahiRecord *r, int flush_cache, void* userdata), void* userdata) {
AvahiKey *k;
AvahiEntry *e;
avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_ID, slot->id);
}
+static void cleanup_dead(AvahiServer *s) {
+ assert(s);
+
+ avahi_cleanup_dead_entries(s);
+ avahi_browser_cleanup(s);
+}
+
static void socket_event(AvahiWatch *w, int fd, AvahiWatchEvent events, void *userdata) {
AvahiServer *s = userdata;
AvahiAddress dest;
/* Remove all locally rgeistered stuff */
while(s->entries)
- free_entry(s, s->entries);
+ avahi_entry_free(s, s->entries);
avahi_interface_monitor_free(s->monitor);
while (s->groups)
- free_group(s, s->groups);
+ avahi_entry_group_free(s, s->groups);
free_slots(s);
avahi_free(s);
}
-static int check_record_conflict(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiRecord *r, AvahiPublishFlags flags) {
- AvahiEntry *e;
-
- assert(s);
- assert(r);
-
- for (e = avahi_hashmap_lookup(s->entries_by_key, r->key); e; e = e->by_key_next) {
- if (e->dead)
- continue;
-
- if (!(flags & AVAHI_PUBLISH_UNIQUE) && !(e->flags & AVAHI_PUBLISH_UNIQUE))
- continue;
-
- if ((flags & AVAHI_PUBLISH_ALLOW_MULTIPLE) && (e->flags & AVAHI_PUBLISH_ALLOW_MULTIPLE) )
- continue;
-
- if ((interface <= 0 ||
- e->interface <= 0 ||
- e->interface == interface) &&
- (protocol == AVAHI_PROTO_UNSPEC ||
- e->protocol == AVAHI_PROTO_UNSPEC ||
- e->protocol == protocol))
-
- return -1;
- }
-
- return 0;
-}
-
-int avahi_server_add(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- AvahiRecord *r) {
-
- assert(s);
- assert(r);
-
- if (!AVAHI_IF_VALID(interface))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE);
-
- if (!AVAHI_PROTO_VALID(protocol))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL);
-
- if (!AVAHI_FLAGS_VALID(
- flags,
- AVAHI_PUBLISH_NO_ANNOUNCE|
- AVAHI_PUBLISH_NO_PROBE|
- AVAHI_PUBLISH_UNIQUE|
- AVAHI_PUBLISH_ALLOW_MULTIPLE|
- AVAHI_PUBLISH_IS_PROXY|
- AVAHI_PUBLISH_UPDATE))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS);
-
- if (!avahi_is_valid_domain_name(r->key->name))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
-
- if (r->ttl == 0)
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_TTL);
-
- if (avahi_key_is_pattern(r->key))
- return avahi_server_set_errno(s, AVAHI_ERR_IS_PATTERN);
-
- if (!avahi_record_is_valid(r))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_RECORD);
-
- if (flags & AVAHI_PUBLISH_UPDATE) {
- AvahiEntry *e;
- AvahiRecord *old_record;
- int is_first = 1;
-
- /* Update and existing record */
-
- /* Find the first matching entry */
- for (e = avahi_hashmap_lookup(s->entries_by_key, r->key); e; e = e->by_key_next) {
- if (!e->dead && e->group == g && e->interface == interface && e->protocol == protocol)
- break;
-
- is_first = 0;
- }
-
- /* Hmm, nothing found? */
- if (!e)
- return avahi_server_set_errno(s, AVAHI_ERR_NOT_FOUND);
-
- /* Update the entry */
- old_record = e->record;
- e->record = avahi_record_ref(r);
- e->flags = flags;
-
- /* Announce our changes when needed */
- if (!avahi_record_equal_no_ttl(old_record, r) && (!g || g->state != AVAHI_ENTRY_GROUP_UNCOMMITED)) {
-
- /* Remove the old entry from all caches, if needed */
- if (!(e->flags & AVAHI_PUBLISH_UNIQUE))
- avahi_goodbye_entry(s, e, 1, 0);
-
- /* Reannounce our updated entry */
- avahi_reannounce_entry(s, e);
- }
-
- /* If we were the first entry in the list, we need to update the key */
- if (is_first)
- avahi_hashmap_replace(s->entries_by_key, e->record->key, e);
-
- avahi_record_unref(old_record);
-
- } else {
- AvahiEntry *e, *t;
-
- /* Add a new record */
-
- if (check_record_conflict(s, interface, protocol, r, flags) < 0)
- return avahi_server_set_errno(s, AVAHI_ERR_LOCAL_COLLISION);
-
- if (!(e = avahi_new(AvahiEntry, 1)))
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
- e->server = s;
- e->record = avahi_record_ref(r);
- e->group = g;
- e->interface = interface;
- e->protocol = protocol;
- e->flags = flags;
- e->dead = 0;
-
- AVAHI_LLIST_HEAD_INIT(AvahiAnnouncer, e->announcers);
-
- AVAHI_LLIST_PREPEND(AvahiEntry, entries, s->entries, e);
-
- /* Insert into hash table indexed by name */
- t = avahi_hashmap_lookup(s->entries_by_key, e->record->key);
- AVAHI_LLIST_PREPEND(AvahiEntry, by_key, t, e);
- avahi_hashmap_replace(s->entries_by_key, e->record->key, t);
-
- /* Insert into group list */
- if (g)
- AVAHI_LLIST_PREPEND(AvahiEntry, by_group, g->entries, e);
-
- avahi_announce_entry(s, e);
- }
-
- return AVAHI_OK;
-}
-
-const AvahiRecord *avahi_server_iterate(AvahiServer *s, AvahiSEntryGroup *g, void **state) {
- AvahiEntry **e = (AvahiEntry**) state;
- assert(s);
- assert(e);
-
- if (!*e)
- *e = g ? g->entries : s->entries;
-
- while (*e && (*e)->dead)
- *e = g ? (*e)->by_group_next : (*e)->entries_next;
-
- if (!*e)
- return NULL;
-
- return avahi_record_ref((*e)->record);
-}
-
-int avahi_server_dump(AvahiServer *s, AvahiDumpCallback callback, void* userdata) {
- AvahiEntry *e;
-
- assert(s);
- assert(callback);
-
- callback(";;; ZONE DUMP FOLLOWS ;;;", userdata);
-
- for (e = s->entries; e; e = e->entries_next) {
- char *t;
- char ln[256];
-
- if (e->dead)
- continue;
-
- if (!(t = avahi_record_to_string(e->record)))
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
- snprintf(ln, sizeof(ln), "%s ; iface=%i proto=%i", t, e->interface, e->protocol);
- avahi_free(t);
-
- callback(ln, userdata);
- }
-
- avahi_dump_caches(s->monitor, callback, userdata);
-
- if (s->wide_area_lookup_engine)
- avahi_wide_area_cache_dump(s->wide_area_lookup_engine, callback, userdata);
- return AVAHI_OK;
-}
-
-int avahi_server_add_ptr(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- uint32_t ttl,
- const char *name,
- const char *dest) {
-
- AvahiRecord *r;
- int ret;
-
- assert(s);
- assert(dest);
-
- if ((name && !avahi_is_valid_domain_name(name)) || !avahi_is_valid_domain_name(dest))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
-
- if (!name)
- name = s->host_name_fqdn;
-
- if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR, ttl)))
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
- r->data.ptr.name = avahi_normalize_name_strdup(dest);
- ret = avahi_server_add(s, g, interface, protocol, flags, r);
- avahi_record_unref(r);
- return ret;
-}
-
-int avahi_server_add_address(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *name,
- AvahiAddress *a) {
-
- char *n = NULL;
- int ret = AVAHI_OK;
-
- assert(s);
- assert(a);
-
- if (!AVAHI_IF_VALID(interface))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE);
-
- if (!AVAHI_PROTO_VALID(protocol) || !AVAHI_PROTO_VALID(a->proto))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL);
-
- if (!AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_NO_REVERSE|AVAHI_PUBLISH_NO_ANNOUNCE|AVAHI_PUBLISH_NO_PROBE|AVAHI_PUBLISH_UPDATE))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS);
-
- if (name && !avahi_is_valid_domain_name(name))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
-
- if (!name)
- name = s->host_name_fqdn;
- else {
- if (!(n = avahi_normalize_name_strdup(name)))
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
- name = n;
- }
-
- if (a->proto == AVAHI_PROTO_INET) {
- AvahiRecord *r;
-
- if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, AVAHI_DEFAULT_TTL_HOST_NAME))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- r->data.a.address = a->data.ipv4;
- ret = avahi_server_add(s, g, interface, protocol, (flags & ~ AVAHI_PUBLISH_NO_REVERSE) | AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r);
- avahi_record_unref(r);
-
- if (ret < 0)
- goto fail;
-
- if (!(flags & AVAHI_PUBLISH_NO_REVERSE)) {
- char *reverse;
-
- if (!(reverse = avahi_reverse_lookup_name_ipv4(&a->data.ipv4))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
- avahi_free(reverse);
- }
-
- } else {
- AvahiRecord *r;
-
- assert(a->proto == AVAHI_PROTO_INET6);
-
- if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA, AVAHI_DEFAULT_TTL_HOST_NAME))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- r->data.aaaa.address = a->data.ipv6;
- ret = avahi_server_add(s, g, interface, protocol, (flags & ~ AVAHI_PUBLISH_NO_REVERSE) | AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r);
- avahi_record_unref(r);
-
- if (ret < 0)
- goto fail;
-
- if (!(flags & AVAHI_PUBLISH_NO_REVERSE)) {
- char *reverse;
-
- if (!(reverse = avahi_reverse_lookup_name_ipv6_arpa(&a->data.ipv6))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
- avahi_free(reverse);
-
- if (ret < 0)
- goto fail;
-
- if (!(reverse = avahi_reverse_lookup_name_ipv6_int(&a->data.ipv6))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
- avahi_free(reverse);
- }
- }
-
-fail:
-
- avahi_free(n);
-
- return ret;
-}
-
-static int server_add_txt_strlst_nocopy(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- uint32_t ttl,
- const char *name,
- AvahiStringList *strlst) {
-
- AvahiRecord *r;
- int ret;
-
- assert(s);
-
- if (!(r = avahi_record_new_full(name ? name : s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT, ttl))) {
- avahi_string_list_free(strlst);
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- }
-
- r->data.txt.string_list = strlst;
- ret = avahi_server_add(s, g, interface, protocol, flags, r);
- avahi_record_unref(r);
-
- return ret;
-}
-
-int avahi_server_add_txt_strlst(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- uint32_t ttl,
- const char *name,
- AvahiStringList *strlst) {
-
- assert(s);
-
- return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_copy(strlst));
-}
-
-int avahi_server_add_txt_va(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- uint32_t ttl,
- const char *name,
- va_list va) {
-
- assert(s);
-
- return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_new_va(va));
-}
-
-int avahi_server_add_txt(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- uint32_t ttl,
- const char *name,
- ...) {
-
- va_list va;
- int ret;
-
- assert(s);
-
- va_start(va, name);
- ret = avahi_server_add_txt_va(s, g, interface, protocol, flags, ttl, name, va);
- va_end(va);
-
- return ret;
-}
-
-static AvahiStringList *add_magic_cookie(
- AvahiServer *s,
- AvahiStringList *strlst) {
-
- assert(s);
-
- if (!s->config.add_service_cookie)
- return strlst;
-
- if (avahi_string_list_find(strlst, AVAHI_SERVICE_COOKIE))
- /* This string list already contains a magic cookie */
- return strlst;
-
- return avahi_string_list_add_printf(strlst, AVAHI_SERVICE_COOKIE"=%u", s->local_service_cookie);
-}
-
-static int server_add_service_strlst_nocopy(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
- const char *host,
- uint16_t port,
- AvahiStringList *strlst) {
-
- char ptr_name[AVAHI_DOMAIN_NAME_MAX], svc_name[AVAHI_DOMAIN_NAME_MAX], enum_ptr[AVAHI_DOMAIN_NAME_MAX], *h = NULL;
- AvahiRecord *r = NULL;
- int ret = AVAHI_OK;
-
- assert(s);
- assert(type);
- assert(name);
-
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_NO_COOKIE|AVAHI_PUBLISH_IS_PROXY|AVAHI_PUBLISH_UPDATE), AVAHI_ERR_INVALID_FLAGS);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !host || avahi_is_valid_domain_name(host), AVAHI_ERR_INVALID_HOST_NAME);
-
- if (!domain)
- domain = s->domain_name;
-
- if (!host)
- host = s->host_name_fqdn;
-
- if (!(h = avahi_normalize_name_strdup(host))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0 ||
- (ret = avahi_service_name_join(ptr_name, sizeof(ptr_name), NULL, type, domain)) < 0 ||
- (ret = avahi_service_name_join(enum_ptr, sizeof(enum_ptr), NULL, "_services._dns-sd._udp", domain)) < 0) {
- avahi_server_set_errno(s, ret);
- goto fail;
- }
-
- /* Add service enumeration PTR record */
-
- if ((ret = avahi_server_add_ptr(s, g, interface, protocol, flags & AVAHI_PUBLISH_IS_PROXY, AVAHI_DEFAULT_TTL, ptr_name, svc_name)) < 0)
- goto fail;
-
- /* Add SRV record */
-
- if (!(r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- r->data.srv.priority = 0;
- r->data.srv.weight = 0;
- r->data.srv.port = port;
- r->data.srv.name = h;
- h = NULL;
- ret = avahi_server_add(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY) | AVAHI_PUBLISH_UNIQUE, r);
- avahi_record_unref(r);
-
- if (ret < 0)
- goto fail;
-
- /* Add TXT record */
-
- if (!(flags & AVAHI_PUBLISH_NO_COOKIE))
- strlst = add_magic_cookie(s, strlst);
-
- ret = server_add_txt_strlst_nocopy(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY) | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL, svc_name, strlst);
- strlst = NULL;
-
- if (ret < 0)
- goto fail;
-
- /* Add service type enumeration record */
-
- ret = avahi_server_add_ptr(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY), AVAHI_DEFAULT_TTL, enum_ptr, ptr_name);
-
-fail:
-
- avahi_string_list_free(strlst);
- avahi_free(h);
-
- return ret;
-}
-
-int avahi_server_add_service_strlst(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
- const char *host,
- uint16_t port,
- AvahiStringList *strlst) {
-
- assert(s);
- assert(type);
- assert(name);
-
- return server_add_service_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, host, port, avahi_string_list_copy(strlst));
-}
-
-int avahi_server_add_service_va(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
- const char *host,
- uint16_t port,
- va_list va) {
-
- assert(s);
- assert(type);
- assert(name);
-
- return server_add_service_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, host, port, avahi_string_list_new_va(va));
-}
-
-int avahi_server_add_service(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
- const char *host,
- uint16_t port,
- ... ){
-
- va_list va;
- int ret;
-
- va_start(va, port);
- ret = avahi_server_add_service_va(s, g, interface, protocol, flags, name, type, domain, host, port, va);
- va_end(va);
-
- return ret;
-}
-
-static int server_update_service_txt_strlst_nocopy(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
- AvahiStringList *strlst) {
-
- char svc_name[AVAHI_DOMAIN_NAME_MAX];
- int ret = AVAHI_OK;
-
- assert(s);
- assert(type);
- assert(name);
-
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_IS_PROXY|AVAHI_PUBLISH_NO_COOKIE), AVAHI_ERR_INVALID_FLAGS);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
-
- if (!domain)
- domain = s->domain_name;
-
- if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0) {
- avahi_server_set_errno(s, ret);
- goto fail;
- }
-
- /* Add TXT record */
- if (!(flags & AVAHI_PUBLISH_NO_COOKIE))
- strlst = add_magic_cookie(s, strlst);
-
- ret = server_add_txt_strlst_nocopy(s, g, interface, protocol, (flags & AVAHI_PUBLISH_IS_PROXY) | AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_UPDATE, AVAHI_DEFAULT_TTL, svc_name, strlst);
- strlst = NULL;
-
-fail:
-
- avahi_string_list_free(strlst);
-
- return ret;
-}
-
-int avahi_server_update_service_txt_strlst(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
- AvahiStringList *strlst) {
-
- return server_update_service_txt_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, avahi_string_list_copy(strlst));
-}
-
-/** Update the TXT record for a service with the NULL terminated list of strings of the va_list. */
-int avahi_server_update_service_txt_va(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
- va_list va) {
-
- return server_update_service_txt_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, avahi_string_list_new_va(va));
-}
-
-/** Update the TXT record for a service with the NULL termonate list of strings */
-int avahi_server_update_service_txt(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
- ...) {
-
- va_list va;
- int ret;
-
- va_start(va, domain);
- ret = avahi_server_update_service_txt_va(s, g, interface, protocol, flags, name, type, domain, va);
- va_end(va);
-
- return ret;
-}
-
-int avahi_server_add_service_subtype(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
- const char *subtype) {
-
- int ret = AVAHI_OK;
- char svc_name[AVAHI_DOMAIN_NAME_MAX], ptr_name[AVAHI_DOMAIN_NAME_MAX];
-
- assert(name);
- assert(type);
- assert(subtype);
-
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, AVAHI_FLAGS_VALID(flags, 0), AVAHI_ERR_INVALID_FLAGS);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_subtype(subtype), AVAHI_ERR_INVALID_SERVICE_SUBTYPE);
-
- if (!domain)
- domain = s->domain_name;
-
- if ((ret = avahi_service_name_join(svc_name, sizeof(svc_name), name, type, domain)) < 0 ||
- (ret = avahi_service_name_join(ptr_name, sizeof(ptr_name), NULL, subtype, domain)) < 0) {
- avahi_server_set_errno(s, ret);
- goto fail;
- }
-
- if ((ret = avahi_server_add_ptr(s, g, interface, protocol, flags & AVAHI_PUBLISH_IS_PROXY, AVAHI_DEFAULT_TTL, ptr_name, svc_name)) < 0)
- goto fail;
-
-fail:
-
- return ret;
-}
-
-static void hexstring(char *s, size_t sl, const void *p, size_t pl) {
- static const char hex[] = "0123456789abcdef";
- int b = 0;
- const uint8_t *k = p;
-
- while (sl > 1 && pl > 0) {
- *(s++) = hex[(b ? *k : *k >> 4) & 0xF];
-
- if (b) {
- k++;
- pl--;
- }
-
- b = !b;
-
- sl--;
- }
-
- if (sl > 0)
- *s = 0;
-}
-
-int avahi_server_add_dns_server_address(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *domain,
- AvahiDNSServerType type,
- const AvahiAddress *address,
- uint16_t port /** should be 53 */) {
-
- AvahiRecord *r;
- int ret;
- char n[64], h[64];
-
- assert(s);
- assert(address);
-
- if (!AVAHI_IF_VALID(interface))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE);
-
- if (!AVAHI_PROTO_VALID(protocol) || !AVAHI_PROTO_VALID(address->proto))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL);
-
- if (!AVAHI_FLAGS_VALID(flags, 0) || (type != AVAHI_DNS_SERVER_UPDATE && type != AVAHI_DNS_SERVER_RESOLVE))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS);
-
- if (port == 0)
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT);
-
- if (domain && !avahi_is_valid_domain_name(domain))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
-
- if (!domain)
- domain = s->domain_name;
-
- if (address->proto == AVAHI_PROTO_INET) {
- hexstring(h, sizeof(h), &address->data, sizeof(AvahiIPv4Address));
- snprintf(n, sizeof(n), "ip-%s.%s", h, domain);
- r = avahi_record_new_full(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, AVAHI_DEFAULT_TTL_HOST_NAME);
- r->data.a.address = address->data.ipv4;
- } else {
- hexstring(h, sizeof(h), &address->data, sizeof(AvahiIPv6Address));
- snprintf(n, sizeof(n), "ip6-%s.%s", h, domain);
- r = avahi_record_new_full(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA, AVAHI_DEFAULT_TTL_HOST_NAME);
- r->data.aaaa.address = address->data.ipv6;
- }
-
- if (!r)
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
- ret = avahi_server_add(s, g, interface, protocol, AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r);
- avahi_record_unref(r);
-
- if (ret < 0)
- return ret;
-
- return avahi_server_add_dns_server_name(s, g, interface, protocol, flags, domain, type, n, port);
-}
-
-int avahi_server_add_dns_server_name(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiPublishFlags flags,
- const char *domain,
- AvahiDNSServerType type,
- const char *name,
- uint16_t port /** should be 53 */) {
-
- int ret = -1;
- char t[256], *d = NULL, *n = NULL;
- AvahiRecord *r;
-
- assert(s);
- assert(name);
-
- if (!AVAHI_IF_VALID(interface))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_INTERFACE);
-
- if (!AVAHI_PROTO_VALID(protocol))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PROTOCOL);
-
- if (!AVAHI_FLAGS_VALID(flags, 0) || (type != AVAHI_DNS_SERVER_UPDATE && type != AVAHI_DNS_SERVER_RESOLVE))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_FLAGS);
-
- if (port == 0)
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT);
-
- if (!avahi_is_valid_domain_name(name))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
-
- if (domain && !avahi_is_valid_domain_name(domain))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
-
- if (!domain)
- domain = s->domain_name;
-
- if (!(n = avahi_normalize_name_strdup(name)) ||
- !(d = avahi_normalize_name_strdup(domain))) {
- avahi_free(n);
- avahi_free(d);
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- }
-
- snprintf(t, sizeof(t), "%s.%s", type == AVAHI_DNS_SERVER_RESOLVE ? "_domain._udp" : "_dns-update._udp", d);
- avahi_free(d);
-
- if (!(r = avahi_record_new_full(t, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) {
- avahi_free(n);
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- }
-
- r->data.srv.priority = 0;
- r->data.srv.weight = 0;
- r->data.srv.port = port;
- r->data.srv.name = n;
- ret = avahi_server_add(s, g, interface, protocol, AVAHI_PUBLISH_NULL, r);
- avahi_record_unref(r);
-
- return ret;
-}
-
-static void post_query_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, void* userdata) {
- AvahiKey *k = userdata;
-
- assert(m);
- assert(i);
- assert(k);
-
- avahi_interface_post_query(i, k, 0);
-}
-
-void avahi_server_post_query(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiKey *key) {
- assert(s);
- assert(key);
-
- avahi_interface_monitor_walk(s->monitor, interface, protocol, post_query_callback, key);
-}
-
-void avahi_s_entry_group_change_state(AvahiSEntryGroup *g, AvahiEntryGroupState state) {
- assert(g);
-
- if (g->state == state)
- return;
-
- assert(state <= AVAHI_ENTRY_GROUP_COLLISION);
-
- if (g->state == AVAHI_ENTRY_GROUP_ESTABLISHED) {
-
- /* If the entry group was established for a time longer then
- * 5s, reset the establishment trial counter */
-
- if (avahi_age(&g->established_at) > 5000000)
- g->n_register_try = 0;
- }
-
- if (state == AVAHI_ENTRY_GROUP_ESTABLISHED)
-
- /* If the entry group is now established, remember the time
- * this happened */
-
- gettimeofday(&g->established_at, NULL);
-
- g->state = state;
-
- if (g->callback)
- g->callback(g->server, g, state, g->userdata);
-}
-
-AvahiSEntryGroup *avahi_s_entry_group_new(AvahiServer *s, AvahiSEntryGroupCallback callback, void* userdata) {
- AvahiSEntryGroup *g;
-
- assert(s);
-
- if (!(g = avahi_new(AvahiSEntryGroup, 1))) {
- avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- return NULL;
- }
-
- g->server = s;
- g->callback = callback;
- g->userdata = userdata;
- g->dead = 0;
- g->state = AVAHI_ENTRY_GROUP_UNCOMMITED;
- g->n_probing = 0;
- g->n_register_try = 0;
- g->register_time_event = NULL;
- g->register_time.tv_sec = 0;
- g->register_time.tv_usec = 0;
- AVAHI_LLIST_HEAD_INIT(AvahiEntry, g->entries);
-
- AVAHI_LLIST_PREPEND(AvahiSEntryGroup, groups, s->groups, g);
- return g;
-}
-
-void avahi_s_entry_group_free(AvahiSEntryGroup *g) {
- AvahiEntry *e;
-
- assert(g);
- assert(g->server);
-
- for (e = g->entries; e; e = e->by_group_next) {
- if (!e->dead) {
- avahi_goodbye_entry(g->server, e, 1, 1);
- e->dead = 1;
- }
- }
-
- if (g->register_time_event) {
- avahi_time_event_free(g->register_time_event);
- g->register_time_event = NULL;
- }
-
- g->dead = 1;
-
- g->server->need_group_cleanup = 1;
- g->server->need_entry_cleanup = 1;
-}
-
-static void entry_group_commit_real(AvahiSEntryGroup *g) {
- assert(g);
-
- gettimeofday(&g->register_time, NULL);
-
- avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
-
- if (!g->dead) {
- avahi_announce_group(g->server, g);
- avahi_s_entry_group_check_probed(g, 0);
- }
-}
-
-static void entry_group_register_time_event_callback(AvahiTimeEvent *e, void* userdata) {
- AvahiSEntryGroup *g = userdata;
- assert(g);
-
-/* avahi_log_debug("Holdoff passed, waking up and going on."); */
-
- avahi_time_event_free(g->register_time_event);
- g->register_time_event = NULL;
-
- /* Holdoff time passed, so let's start probing */
- entry_group_commit_real(g);
-}
-
-int avahi_s_entry_group_commit(AvahiSEntryGroup *g) {
- struct timeval now;
-
- assert(g);
- assert(!g->dead);
-
- if (g->state != AVAHI_ENTRY_GROUP_UNCOMMITED && g->state != AVAHI_ENTRY_GROUP_COLLISION)
- return avahi_server_set_errno(g->server, AVAHI_ERR_BAD_STATE);
-
- g->n_register_try++;
-
- avahi_timeval_add(&g->register_time,
- 1000*(g->n_register_try >= AVAHI_RR_RATE_LIMIT_COUNT ?
- AVAHI_RR_HOLDOFF_MSEC_RATE_LIMIT :
- AVAHI_RR_HOLDOFF_MSEC));
-
- gettimeofday(&now, NULL);
-
- if (avahi_timeval_compare(&g->register_time, &now) <= 0) {
- /* Holdoff time passed, so let's start probing */
-/* avahi_log_debug("Holdoff passed, directly going on."); */
-
- entry_group_commit_real(g);
- } else {
-/* avahi_log_debug("Holdoff not passed, sleeping."); */
-
- /* Holdoff time has not yet passed, so let's wait */
- assert(!g->register_time_event);
- g->register_time_event = avahi_time_event_new(g->server->time_event_queue, &g->register_time, entry_group_register_time_event_callback, g);
-
- avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
- }
-
- return AVAHI_OK;
-}
-
-void avahi_s_entry_group_reset(AvahiSEntryGroup *g) {
- AvahiEntry *e;
- assert(g);
-
- for (e = g->entries; e; e = e->by_group_next) {
- if (!e->dead) {
- avahi_goodbye_entry(g->server, e, 1, 1);
- e->dead = 1;
- }
- }
- g->server->need_entry_cleanup = 1;
-
- if (g->register_time_event) {
- avahi_time_event_free(g->register_time_event);
- g->register_time_event = NULL;
- }
-
- g->n_probing = 0;
-
- gettimeofday(&g->register_time, NULL);
-
- avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_UNCOMMITED);
-}
-
-int avahi_entry_is_commited(AvahiEntry *e) {
- assert(e);
- assert(!e->dead);
-
- return !e->group ||
- e->group->state == AVAHI_ENTRY_GROUP_REGISTERING ||
- e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED;
-}
-
-AvahiEntryGroupState avahi_s_entry_group_get_state(AvahiSEntryGroup *g) {
- assert(g);
- assert(!g->dead);
-
- return g->state;
-}
-
-void avahi_s_entry_group_set_data(AvahiSEntryGroup *g, void* userdata) {
- assert(g);
-
- g->userdata = userdata;
-}
-
-void* avahi_s_entry_group_get_data(AvahiSEntryGroup *g) {
- assert(g);
-
- return g->userdata;
-}
-
-int avahi_s_entry_group_is_empty(AvahiSEntryGroup *g) {
- AvahiEntry *e;
- assert(g);
-
- /* Look for an entry that is not dead */
- for (e = g->entries; e; e = e->by_group_next)
- if (!e->dead)
- return 0;
-
- return 1;
-}
-
const char* avahi_server_get_domain_name(AvahiServer *s) {
assert(s);
#define AVAHI_FLAGS_VALID(flags, max) (!((flags) & ~(max)))
+#define AVAHI_RR_HOLDOFF_MSEC 1000
+#define AVAHI_RR_HOLDOFF_MSEC_RATE_LIMIT 60000
+#define AVAHI_RR_RATE_LIMIT_COUNT 15
+
typedef struct AvahiLegacyUnicastReflectSlot AvahiLegacyUnicastReflectSlot;
struct AvahiLegacyUnicastReflectSlot {
AvahiWideAreaLookupEngine *wide_area_lookup_engine;
};
-int avahi_server_entry_match_interface(AvahiEntry *e, AvahiInterface *i);
+void avahi_entry_free(AvahiServer*s, AvahiEntry *e);
+void avahi_entry_group_free(AvahiServer *s, AvahiSEntryGroup *g);
-void avahi_server_post_query(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiKey *key);
+void avahi_cleanup_dead_entries(AvahiServer *s);
void avahi_server_prepare_response(AvahiServer *s, AvahiInterface *i, AvahiEntry *e, int unicast_response, int auxiliary);
void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, AvahiKey *k, int unicast_response);
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