diff options
Diffstat (limited to 'trunk/avahi-core/browse-dns-server.c')
| -rw-r--r-- | trunk/avahi-core/browse-dns-server.c | 324 |
1 files changed, 0 insertions, 324 deletions
diff --git a/trunk/avahi-core/browse-dns-server.c b/trunk/avahi-core/browse-dns-server.c deleted file mode 100644 index 48d23ad..0000000 --- a/trunk/avahi-core/browse-dns-server.c +++ /dev/null @@ -1,324 +0,0 @@ -/* $Id$ */ - -/*** - 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 <string.h> - -#include <avahi-common/domain.h> -#include <avahi-common/malloc.h> -#include <avahi-common/error.h> - -#include "browse.h" -#include "log.h" -#include "rr.h" - -typedef struct AvahiDNSServerInfo AvahiDNSServerInfo; - -struct AvahiDNSServerInfo { - AvahiSDNSServerBrowser *browser; - - AvahiIfIndex interface; - AvahiProtocol protocol; - AvahiRecord *srv_record; - AvahiSHostNameResolver *host_name_resolver; - AvahiAddress address; - AvahiLookupResultFlags flags; - - AVAHI_LLIST_FIELDS(AvahiDNSServerInfo, info); -}; - -struct AvahiSDNSServerBrowser { - AvahiServer *server; - - AvahiSRecordBrowser *record_browser; - AvahiSDNSServerBrowserCallback callback; - void* userdata; - AvahiProtocol aprotocol; - AvahiLookupFlags user_flags; - - unsigned n_info; - - AVAHI_LLIST_FIELDS(AvahiSDNSServerBrowser, browser); - AVAHI_LLIST_HEAD(AvahiDNSServerInfo, info); -}; - -static AvahiDNSServerInfo* get_server_info(AvahiSDNSServerBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiRecord *r) { - AvahiDNSServerInfo *i; - - assert(b); - assert(r); - - for (i = b->info; i; i = i->info_next) - if (i->interface == interface && - i->protocol == protocol && - avahi_record_equal_no_ttl(r, i->srv_record)) - return i; - - return NULL; -} - -static void server_info_free(AvahiSDNSServerBrowser *b, AvahiDNSServerInfo *i) { - assert(b); - assert(i); - - avahi_record_unref(i->srv_record); - if (i->host_name_resolver) - avahi_s_host_name_resolver_free(i->host_name_resolver); - - AVAHI_LLIST_REMOVE(AvahiDNSServerInfo, info, b->info, i); - - assert(b->n_info >= 1); - b->n_info--; - - avahi_free(i); -} - -static void host_name_resolver_callback( - AvahiSHostNameResolver *r, - AVAHI_GCC_UNUSED AvahiIfIndex interface, - AVAHI_GCC_UNUSED AvahiProtocol protocol, - AvahiResolverEvent event, - const char *host_name, - const AvahiAddress *a, - AvahiLookupResultFlags flags, - void* userdata) { - - AvahiDNSServerInfo *i = userdata; - - assert(r); - assert(host_name); - assert(i); - - switch (event) { - case AVAHI_RESOLVER_FOUND: { - i->address = *a; - - i->browser->callback( - i->browser, - i->interface, - i->protocol, - AVAHI_BROWSER_NEW, - i->srv_record->data.srv.name, - &i->address, - i->srv_record->data.srv.port, - i->flags | flags, - i->browser->userdata); - - break; - } - - case AVAHI_RESOLVER_FAILURE: - /* Ignore */ - break; - } - - avahi_s_host_name_resolver_free(i->host_name_resolver); - i->host_name_resolver = NULL; -} - -static void record_browser_callback( - AvahiSRecordBrowser*rr, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiBrowserEvent event, - AvahiRecord *record, - AvahiLookupResultFlags flags, - void* userdata) { - - AvahiSDNSServerBrowser *b = userdata; - - assert(rr); - assert(b); - - /* Filter flags */ - flags &= AVAHI_LOOKUP_RESULT_CACHED | AVAHI_LOOKUP_RESULT_MULTICAST | AVAHI_LOOKUP_RESULT_WIDE_AREA; - - switch (event) { - case AVAHI_BROWSER_NEW: { - AvahiDNSServerInfo *i; - - assert(record); - assert(record->key->type == AVAHI_DNS_TYPE_SRV); - - if (get_server_info(b, interface, protocol, record)) - return; - - if (b->n_info >= 10) - return; - - if (!(i = avahi_new(AvahiDNSServerInfo, 1))) - return; /* OOM */ - - i->browser = b; - i->interface = interface; - i->protocol = protocol; - i->srv_record = avahi_record_ref(record); - i->host_name_resolver = avahi_s_host_name_resolver_new( - b->server, - interface, protocol, - record->data.srv.name, - b->aprotocol, - b->user_flags, - host_name_resolver_callback, i); - i->flags = flags; - - AVAHI_LLIST_PREPEND(AvahiDNSServerInfo, info, b->info, i); - - b->n_info++; - break; - } - - case AVAHI_BROWSER_REMOVE: { - AvahiDNSServerInfo *i; - - assert(record); - assert(record->key->type == AVAHI_DNS_TYPE_SRV); - - if (!(i = get_server_info(b, interface, protocol, record))) - return; - - if (!i->host_name_resolver) - b->callback( - b, - interface, - protocol, - event, - i->srv_record->data.srv.name, - &i->address, - i->srv_record->data.srv.port, - i->flags | flags, - b->userdata); - - server_info_free(b, i); - break; - } - - case AVAHI_BROWSER_FAILURE: - case AVAHI_BROWSER_ALL_FOR_NOW: - case AVAHI_BROWSER_CACHE_EXHAUSTED: - - b->callback( - b, - interface, - protocol, - event, - NULL, - NULL, - 0, - flags, - b->userdata); - - break; - } -} - -AvahiSDNSServerBrowser *avahi_s_dns_server_browser_new( - AvahiServer *server, - AvahiIfIndex interface, - AvahiProtocol protocol, - const char *domain, - AvahiDNSServerType type, - AvahiProtocol aprotocol, - AvahiLookupFlags flags, - AvahiSDNSServerBrowserCallback callback, - void* userdata) { - - static const char * const type_table[AVAHI_DNS_SERVER_MAX] = { - "_domain._udp", - "_dns-update._udp" - }; - - AvahiSDNSServerBrowser *b; - AvahiKey *k = NULL; - char n[AVAHI_DOMAIN_NAME_MAX]; - int r; - - assert(server); - assert(callback); - - AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE); - AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL); - AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_PROTO_VALID(aprotocol), AVAHI_ERR_INVALID_PROTOCOL); - AVAHI_CHECK_VALIDITY_RETURN_NULL(server, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME); - AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_FLAGS_VALID(flags, AVAHI_LOOKUP_USE_WIDE_AREA|AVAHI_LOOKUP_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS); - AVAHI_CHECK_VALIDITY_RETURN_NULL(server, type < AVAHI_DNS_SERVER_MAX, AVAHI_ERR_INVALID_FLAGS); - - if (!domain) - domain = server->domain_name; - - if ((r = avahi_service_name_join(n, sizeof(n), NULL, type_table[type], domain)) < 0) { - avahi_server_set_errno(server, r); - return NULL; - } - - if (!(b = avahi_new(AvahiSDNSServerBrowser, 1))) { - avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY); - return NULL; - } - - b->server = server; - b->callback = callback; - b->userdata = userdata; - b->aprotocol = aprotocol; - b->n_info = 0; - b->user_flags = flags; - - AVAHI_LLIST_HEAD_INIT(AvahiDNSServerInfo, b->info); - AVAHI_LLIST_PREPEND(AvahiSDNSServerBrowser, browser, server->dns_server_browsers, b); - - if (!(k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV))) { - avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY); - goto fail; - } - - if (!(b->record_browser = avahi_s_record_browser_new(server, interface, protocol, k, flags, record_browser_callback, b))) - goto fail; - - avahi_key_unref(k); - - return b; - -fail: - - if (k) - avahi_key_unref(k); - - avahi_s_dns_server_browser_free(b); - return NULL; -} - -void avahi_s_dns_server_browser_free(AvahiSDNSServerBrowser *b) { - assert(b); - - while (b->info) - server_info_free(b, b->info); - - AVAHI_LLIST_REMOVE(AvahiSDNSServerBrowser, browser, b->server->dns_server_browsers, b); - - if (b->record_browser) - avahi_s_record_browser_free(b->record_browser); - - avahi_free(b); -} - |