#include "util.h"
#include "iface.h"
#include "socket.h"
+#include "subscribe.h"
static void handle_query_key(flxServer *s, flxKey *k, flxInterface *i, const flxAddress *a) {
- flxEntry *e;
+ flxServerEntry *e;
+ gchar *txt;
g_assert(s);
g_assert(k);
g_assert(i);
g_assert(a);
- for (e = g_hash_table_lookup(s->rrset_by_name, k); e; e = e->by_name_next) {
+ g_message("Handling query: %s", txt = flx_key_to_string(k));
+ g_free(txt);
- if ((e->interface <= 0 || e->interface == i->index) &&
- (e->protocol == AF_UNSPEC || e->protocol == a->family)) {
+ flx_packet_scheduler_incoming_query(i->scheduler, k);
- flx_interface_post_response(i, a->family, e->record);
- }
+ if (k->type == FLX_DNS_TYPE_ANY) {
+
+ /* Handle ANY query */
+
+ for (e = s->entries; e; e = e->entry_next)
+ if (flx_key_pattern_match(k, e->record->key))
+ if (flx_interface_match(i, e->interface, e->protocol))
+ flx_interface_post_response(i, a, e->record, FALSE);
+ } else {
+
+ /* Handle all other queries */
+
+ for (e = g_hash_table_lookup(s->rrset_by_key, k); e; e = e->by_key_next)
+ if (flx_interface_match(i, e->interface, e->protocol))
+ flx_interface_post_response(i, a, e->record, FALSE);
}
}
handle_query_key(s, key, i, a);
flx_key_unref(key);
}
+
+ /* Known Answer Suppresion */
+ for (n = flx_dns_packet_get_field(p, DNS_FIELD_ANCOUNT); n > 0; n --) {
+ flxRecord *record;
+ gboolean unique = FALSE;
+
+ if (!(record = flx_dns_packet_consume_record(p, &unique))) {
+ g_warning("Packet too short (2)");
+ return;
+ }
+
+ flx_packet_scheduler_incoming_known_answer(i->scheduler, record, a);
+ flx_record_unref(record);
+ }
}
static void handle_response(flxServer *s, flxDnsPacket *p, flxInterface *i, const flxAddress *a) {
g_assert(i);
g_assert(a);
- for (n = flx_dns_packet_get_field(p, DNS_FIELD_ANCOUNT); n > 0; n--) {
+ for (n = flx_dns_packet_get_field(p, DNS_FIELD_ANCOUNT) +
+ flx_dns_packet_get_field(p, DNS_FIELD_ARCOUNT); n > 0; n--) {
flxRecord *record;
gboolean cache_flush = FALSE;
+ gchar *txt;
if (!(record = flx_dns_packet_consume_record(p, &cache_flush))) {
- g_warning("Packet too short");
+ g_warning("Packet too short (3)");
return;
}
- flx_cache_update(a->family == AF_INET ? i->ipv4_cache : i->ipv6_cache, record, cache_flush, a);
- flx_packet_scheduler_drop_response(a->family == AF_INET ? i->ipv4_scheduler : i->ipv6_scheduler, record);
+ if (record->key->type == FLX_DNS_TYPE_ANY)
+ continue;
+
+ g_message("Handling response: %s", txt = flx_record_to_string(record));
+ g_free(txt);
+
+ flx_cache_update(i->cache, record, cache_flush, a);
+
+ flx_packet_scheduler_incoming_response(i->scheduler, record);
flx_record_unref(record);
}
}
g_message("new packet recieved.");
- if (!(i = flx_interface_monitor_get_interface(s->monitor, iface))) {
+ if (!(i = flx_interface_monitor_get_interface(s->monitor, iface, sa->sa_family))) {
g_warning("Recieved packet from invalid interface.");
return;
}
if (ttl != 255) {
- g_warning("Recieved packet with invalid TTL on interface '%s'.", i->name);
+ g_warning("Recieved packet with invalid TTL on interface '%s.%i'.", i->hardware->name, i->protocol);
return;
}
flx_address_from_sockaddr(sa, &a);
-
if (flx_dns_packet_is_query(p)) {
if (flx_dns_packet_get_field(p, DNS_FIELD_QDCOUNT) == 0 ||
} else {
if (flx_dns_packet_get_field(p, DNS_FIELD_QDCOUNT) != 0 ||
flx_dns_packet_get_field(p, DNS_FIELD_ANCOUNT) == 0 ||
- flx_dns_packet_get_field(p, DNS_FIELD_NSCOUNT) != 0 ||
- flx_dns_packet_get_field(p, DNS_FIELD_ARCOUNT) != 0) {
+ flx_dns_packet_get_field(p, DNS_FIELD_NSCOUNT) != 0) {
g_warning("Invalid response packet.");
return;
}
g_assert(s);
if (s->pollfd_ipv4.revents & G_IO_IN) {
- if ((p = flx_recv_dns_packet_ipv4(s->fd_ipv4, &sa, &iface, &ttl)))
+ if ((p = flx_recv_dns_packet_ipv4(s->fd_ipv4, &sa, &iface, &ttl))) {
dispatch_packet(s, p, (struct sockaddr*) &sa, iface, ttl);
+ flx_dns_packet_free(p);
+ }
}
if (s->pollfd_ipv6.revents & G_IO_IN) {
- if ((p = flx_recv_dns_packet_ipv6(s->fd_ipv6, &sa6, &iface, &ttl)))
+ if ((p = flx_recv_dns_packet_ipv6(s->fd_ipv6, &sa6, &iface, &ttl))) {
dispatch_packet(s, p, (struct sockaddr*) &sa6, iface, ttl);
+ flx_dns_packet_free(p);
+ }
}
return TRUE;
struct utsname utsname;
gchar *hinfo;
flxAddress a;
+ flxRecord *r;
g_assert(s);
/* Fill in HINFO rr */
+ r = flx_record_new_full(s->hostname, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_HINFO);
uname(&utsname);
- hinfo = g_strdup_printf("%s%c%s%n", g_strup(utsname.machine), 0, g_strup(utsname.sysname), &length);
-
- flx_server_add_full(s, 0, 0, AF_UNSPEC, TRUE,
- s->hostname, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_HINFO, hinfo, length+1, FLX_DEFAULT_TTL);
-
- g_free(hinfo);
+ r->data.hinfo.cpu = g_strdup(g_strup(utsname.machine));
+ r->data.hinfo.os = g_strdup(g_strup(utsname.sysname));
+ flx_server_add(s, 0, 0, AF_UNSPEC, TRUE, r);
+ flx_record_unref(r);
/* Add localhost entries */
flx_address_parse("127.0.0.1", AF_INET, &a);
s->context = g_main_context_default();
s->current_id = 1;
+
+ FLX_LLIST_HEAD_INIT(flxServerEntry, s->entries);
s->rrset_by_id = g_hash_table_new(g_int_hash, g_int_equal);
- s->rrset_by_name = g_hash_table_new((GHashFunc) flx_key_hash, (GEqualFunc) flx_key_equal);
+ s->rrset_by_key = g_hash_table_new((GHashFunc) flx_key_hash, (GEqualFunc) flx_key_equal);
- FLX_LLIST_HEAD_INIT(flxEntry, s->entries);
+ FLX_LLIST_HEAD_INIT(flxSubscription, s->subscriptions);
+ s->subscription_hashtable = g_hash_table_new((GHashFunc) flx_key_hash, (GEqualFunc) flx_key_equal);
s->monitor = flx_interface_monitor_new(s);
s->time_event_queue = flx_time_event_queue_new(s->context);
flx_interface_monitor_free(s->monitor);
flx_server_remove(s, 0);
+
+ while (s->subscriptions)
+ flx_subscription_free(s->subscriptions);
+ g_hash_table_destroy(s->subscription_hashtable);
g_hash_table_destroy(s->rrset_by_id);
- g_hash_table_destroy(s->rrset_by_name);
+ g_hash_table_destroy(s->rrset_by_key);
flx_time_event_queue_free(s->time_event_queue);
gboolean unique,
flxRecord *r) {
- flxEntry *e, *t;
+ flxServerEntry *e, *t;
g_assert(s);
g_assert(r);
- e = g_new(flxEntry, 1);
+ g_assert(r->key->type != FLX_DNS_TYPE_ANY);
+
+ e = g_new(flxServerEntry, 1);
e->record = flx_record_ref(r);
e->id = id;
e->interface = interface;
e->protocol = protocol;
e->unique = unique;
- FLX_LLIST_PREPEND(flxEntry, entry, s->entries, e);
+ FLX_LLIST_HEAD_INIT(flxAnnouncement, e->announcements);
+
+ FLX_LLIST_PREPEND(flxServerEntry, entry, s->entries, e);
/* Insert into hash table indexed by id */
t = g_hash_table_lookup(s->rrset_by_id, &e->id);
- FLX_LLIST_PREPEND(flxEntry, by_id, t, e);
+ FLX_LLIST_PREPEND(flxServerEntry, by_id, t, e);
g_hash_table_replace(s->rrset_by_id, &e->id, t);
/* Insert into hash table indexed by name */
- t = g_hash_table_lookup(s->rrset_by_name, e->record->key);
- FLX_LLIST_PREPEND(flxEntry, by_name, t, e);
- g_hash_table_replace(s->rrset_by_name, e->record->key, t);
-}
+ t = g_hash_table_lookup(s->rrset_by_key, e->record->key);
+ FLX_LLIST_PREPEND(flxServerEntry, by_key, t, e);
+ g_hash_table_replace(s->rrset_by_key, e->record->key, t);
-void flx_server_add_full(
- flxServer *s,
- gint id,
- gint interface,
- guchar protocol,
- gboolean unique,
- const gchar *name,
- guint16 class,
- guint16 type,
- gconstpointer data,
- guint size,
- guint32 ttl) {
-
- flxRecord *r;
- g_assert(s);
- g_assert(data);
- g_assert(size);
-
- r = flx_record_new_full(name ? name : s->hostname, class, type, data, size, ttl);
- flx_server_add(s, id, interface, protocol, unique, r);
- flx_record_unref(r);
+ flx_announce_entry(s, e);
}
-
const flxRecord *flx_server_iterate(flxServer *s, gint id, void **state) {
- flxEntry **e = (flxEntry**) state;
+ flxServerEntry **e = (flxServerEntry**) state;
g_assert(s);
g_assert(e);
return flx_record_ref((*e)->record);
}
-static void free_entry(flxServer*s, flxEntry *e) {
- flxEntry *t;
+static void free_entry(flxServer*s, flxServerEntry *e) {
+ flxServerEntry *t;
g_assert(e);
+ flx_goodbye_entry(s, e, TRUE);
+
/* Remove from linked list */
- FLX_LLIST_REMOVE(flxEntry, entry, s->entries, e);
+ FLX_LLIST_REMOVE(flxServerEntry, entry, s->entries, e);
/* Remove from hash table indexed by id */
t = g_hash_table_lookup(s->rrset_by_id, &e->id);
- FLX_LLIST_REMOVE(flxEntry, by_id, t, e);
+ FLX_LLIST_REMOVE(flxServerEntry, by_id, t, e);
if (t)
g_hash_table_replace(s->rrset_by_id, &t->id, t);
else
g_hash_table_remove(s->rrset_by_id, &e->id);
/* Remove from hash table indexed by name */
- t = g_hash_table_lookup(s->rrset_by_name, e->record->key);
- FLX_LLIST_REMOVE(flxEntry, by_name, t, e);
+ t = g_hash_table_lookup(s->rrset_by_key, e->record->key);
+ FLX_LLIST_REMOVE(flxServerEntry, by_key, t, e);
if (t)
- g_hash_table_replace(s->rrset_by_name, t->record->key, t);
+ g_hash_table_replace(s->rrset_by_key, t->record->key, t);
else
- g_hash_table_remove(s->rrset_by_name, e->record->key);
+ g_hash_table_remove(s->rrset_by_key, e->record->key);
flx_record_unref(e->record);
g_free(e);
while (s->entries)
free_entry(s, s->entries);
} else {
- flxEntry *e;
+ flxServerEntry *e;
while ((e = g_hash_table_lookup(s->rrset_by_id, &id)))
free_entry(s, e);
}
void flx_server_dump(flxServer *s, FILE *f) {
- flxEntry *e;
+ flxServerEntry *e;
g_assert(s);
g_assert(f);
- fprintf(f, ";;; ZONE DUMP FOLLOWS ;;;\n");
+ fprintf(f, "\n;;; ZONE DUMP FOLLOWS ;;;\n");
for (e = s->entries; e; e = e->entry_next) {
gchar *t;
g_free(t);
}
- flx_dump_caches(s, f);
+ flx_dump_caches(s->monitor, f);
+}
+
+void flx_server_add_ptr(
+ flxServer *s,
+ gint id,
+ gint interface,
+ guchar protocol,
+ gboolean unique,
+ const gchar *name,
+ const gchar *dest) {
+
+ flxRecord *r;
+
+ g_assert(dest);
+
+ r = flx_record_new_full(name ? name : s->hostname, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_PTR);
+ r->data.ptr.name = flx_normalize_name(dest);
+ flx_server_add(s, id, interface, protocol, unique, r);
+ flx_record_unref(r);
+
}
void flx_server_add_address(
const gchar *name,
flxAddress *a) {
- gchar *n;
+ gchar *n = NULL;
g_assert(s);
g_assert(a);
- n = name ? flx_normalize_name(name) : s->hostname;
+ name = name ? (n = flx_normalize_name(name)) : s->hostname;
if (a->family == AF_INET) {
- gchar *r;
-
- flx_server_add_full(s, id, interface, protocol, unique, n, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_A, &a->ipv4, sizeof(a->ipv4), FLX_DEFAULT_TTL);
+ gchar *reverse;
+ flxRecord *r;
- r = flx_reverse_lookup_name_ipv4(&a->ipv4);
- g_assert(r);
- flx_server_add_full(s, id, interface, protocol, unique, r, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_PTR, n, strlen(n)+1, FLX_DEFAULT_TTL);
- g_free(r);
+ r = flx_record_new_full(name, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_A);
+ r->data.a.address = a->data.ipv4;
+ flx_server_add(s, id, interface, protocol, unique, r);
+ flx_record_unref(r);
+
+ reverse = flx_reverse_lookup_name_ipv4(&a->data.ipv4);
+ g_assert(reverse);
+ flx_server_add_ptr(s, id, interface, protocol, unique, reverse, name);
+ g_free(reverse);
} else {
- gchar *r;
+ gchar *reverse;
+ flxRecord *r;
- flx_server_add_full(s, id, interface, protocol, unique, n, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_AAAA, &a->ipv6, sizeof(a->ipv6), FLX_DEFAULT_TTL);
-
- r = flx_reverse_lookup_name_ipv6_arpa(&a->ipv6);
- g_assert(r);
- flx_server_add_full(s, id, interface, protocol, unique, r, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_PTR, n, strlen(n)+1, FLX_DEFAULT_TTL);
- g_free(r);
+ r = flx_record_new_full(name, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_AAAA);
+ r->data.aaaa.address = a->data.ipv6;
+ flx_server_add(s, id, interface, protocol, unique, r);
+ flx_record_unref(r);
+
+ reverse = flx_reverse_lookup_name_ipv6_arpa(&a->data.ipv6);
+ g_assert(reverse);
+ flx_server_add_ptr(s, id, interface, protocol, unique, reverse, name);
+ g_free(reverse);
- r = flx_reverse_lookup_name_ipv6_int(&a->ipv6);
- g_assert(r);
- flx_server_add_full(s, id, interface, protocol, unique, r, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_PTR, n, strlen(n)+1, FLX_DEFAULT_TTL);
- g_free(r);
+ reverse = flx_reverse_lookup_name_ipv6_int(&a->data.ipv6);
+ g_assert(reverse);
+ flx_server_add_ptr(s, id, interface, protocol, unique, reverse, name);
+ g_free(reverse);
}
g_free(n);
}
+void flx_server_add_text_va(
+ flxServer *s,
+ gint id,
+ gint interface,
+ guchar protocol,
+ gboolean unique,
+ const gchar *name,
+ va_list va) {
+
+ flxRecord *r;
+
+ g_assert(s);
+
+ r = flx_record_new_full(name ? name : s->hostname, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_TXT);
+ r->data.txt.string_list = flx_string_list_new_va(va);
+ flx_server_add(s, id, interface, protocol, unique, r);
+ flx_record_unref(r);
+}
+
void flx_server_add_text(
flxServer *s,
gint id,
guchar protocol,
gboolean unique,
const gchar *name,
- const gchar *text) {
+ ...) {
+
+ va_list va;
+
+ g_assert(s);
+
+ va_start(va, name);
+ flx_server_add_text_va(s, id, interface, protocol, unique, name, va);
+ va_end(va);
+}
+
+static void escape_service_name(gchar *d, guint size, const gchar *s) {
+ g_assert(d);
+ g_assert(size);
+ g_assert(s);
+
+ while (*s && size >= 2) {
+ if (*s == '.' || *s == '\\') {
+ if (size < 3)
+ break;
+
+ *(d++) = '\\';
+ size--;
+ }
+
+ *(d++) = *(s++);
+ size--;
+ }
+
+ g_assert(size > 0);
+ *(d++) = 0;
+}
+
+
+void flx_server_add_service_va(
+ flxServer *s,
+ gint id,
+ gint interface,
+ guchar protocol,
+ const gchar *type,
+ const gchar *name,
+ const gchar *domain,
+ const gchar *host,
+ guint16 port,
+ va_list va) {
+
+ gchar ptr_name[256], svc_name[256], ename[64], enum_ptr[256];
+ flxRecord *r;
g_assert(s);
- g_assert(text);
+ g_assert(type);
+ g_assert(name);
- flx_server_add_full(s, id, interface, protocol, unique, name, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_TXT, text, strlen(text), FLX_DEFAULT_TTL);
+ escape_service_name(ename, sizeof(ename), name);
+
+ if (domain) {
+ while (domain[0] == '.')
+ domain++;
+ } else
+ domain = "local";
+
+ if (!host)
+ host = s->hostname;
+
+ snprintf(ptr_name, sizeof(ptr_name), "%s.%s", type, domain);
+ snprintf(svc_name, sizeof(svc_name), "%s.%s.%s", ename, type, domain);
+
+ flx_server_add_ptr(s, id, interface, protocol, FALSE, ptr_name, svc_name);
+
+ r = flx_record_new_full(svc_name, FLX_DNS_CLASS_IN, FLX_DNS_TYPE_SRV);
+ r->data.srv.priority = 0;
+ r->data.srv.weight = 0;
+ r->data.srv.port = port;
+ r->data.srv.name = flx_normalize_name(host);
+ flx_server_add(s, id, interface, protocol, TRUE, r);
+ flx_record_unref(r);
+
+ flx_server_add_text_va(s, id, interface, protocol, FALSE, svc_name, va);
+
+ snprintf(enum_ptr, sizeof(enum_ptr), "_services._dns-sd._udp.%s", domain);
+ flx_server_add_ptr(s, id, interface, protocol, FALSE, enum_ptr, ptr_name);
}
-void flx_server_send_query(flxServer *s, gint interface, guchar protocol, flxKey *k) {
+void flx_server_add_service(
+ flxServer *s,
+ gint id,
+ gint interface,
+ guchar protocol,
+ const gchar *type,
+ const gchar *name,
+ const gchar *domain,
+ const gchar *host,
+ guint16 port,
+ ... ){
+
+ va_list va;
+
g_assert(s);
+ g_assert(type);
+ g_assert(name);
+
+ va_start(va, port);
+ flx_server_add_service_va(s, id, interface, protocol, type, name, domain, host, port, va);
+ va_end(va);
+}
+
+static void post_query_callback(flxInterfaceMonitor *m, flxInterface *i, gpointer userdata) {
+ flxKey *k = userdata;
+
+ g_assert(m);
+ g_assert(i);
g_assert(k);
- if (interface <= 0) {
- flxInterface *i;
+ flx_interface_post_query(i, k, FALSE);
+}
- for (i = flx_interface_monitor_get_first(s->monitor); i; i = i->interface_next)
- flx_interface_post_query(i, protocol, k);
-
- } else {
- flxInterface *i;
+void flx_server_post_query(flxServer *s, gint interface, guchar protocol, flxKey *key) {
+ g_assert(s);
+ g_assert(key);
- if (!(i = flx_interface_monitor_get_interface(s->monitor, interface)))
- return;
+ flx_interface_monitor_walk(s->monitor, interface, protocol, post_query_callback, key);
+}
- flx_interface_post_query(i, protocol, k);
- }
+static void post_response_callback(flxInterfaceMonitor *m, flxInterface *i, gpointer userdata) {
+ flxRecord *r = userdata;
+
+ g_assert(m);
+ g_assert(i);
+ g_assert(r);
+
+ flx_interface_post_response(i, NULL, r, FALSE);
+}
+
+void flx_server_post_response(flxServer *s, gint interface, guchar protocol, flxRecord *record) {
+ g_assert(s);
+ g_assert(record);
+
+ flx_interface_monitor_walk(s->monitor, interface, protocol, post_response_callback, record);
}