diff options
Diffstat (limited to 'trunk/avahi-core/browse-service.c')
| -rw-r--r-- | trunk/avahi-core/browse-service.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/trunk/avahi-core/browse-service.c b/trunk/avahi-core/browse-service.c new file mode 100644 index 0000000..43778dd --- /dev/null +++ b/trunk/avahi-core/browse-service.c @@ -0,0 +1,169 @@ +/* $Id$ */ + +/*** + 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" + +struct AvahiSServiceBrowser { + AvahiServer *server; + char *domain_name; + char *service_type; + + AvahiSRecordBrowser *record_browser; + + AvahiSServiceBrowserCallback callback; + void* userdata; + + AVAHI_LLIST_FIELDS(AvahiSServiceBrowser, browser); +}; + +static void record_browser_callback( + AvahiSRecordBrowser*rr, + AvahiIfIndex interface, + AvahiProtocol protocol, + AvahiBrowserEvent event, + AvahiRecord *record, + AvahiLookupResultFlags flags, + void* userdata) { + + AvahiSServiceBrowser *b = userdata; + + assert(rr); + assert(b); + + /* Filter flags */ + flags &= AVAHI_LOOKUP_RESULT_CACHED | AVAHI_LOOKUP_RESULT_MULTICAST | AVAHI_LOOKUP_RESULT_WIDE_AREA; + + if (record) { + char service[AVAHI_LABEL_MAX], type[AVAHI_DOMAIN_NAME_MAX], domain[AVAHI_DOMAIN_NAME_MAX]; + + assert(record->key->type == AVAHI_DNS_TYPE_PTR); + + if (event == AVAHI_BROWSER_NEW && avahi_server_is_service_local(b->server, interface, protocol, record->data.ptr.name)) + flags |= AVAHI_LOOKUP_RESULT_LOCAL; + + if (avahi_service_name_split(record->data.ptr.name, service, sizeof(service), type, sizeof(type), domain, sizeof(domain)) < 0) { + avahi_log_warn("Failed to split '%s'", record->key->name); + return; + } + + b->callback(b, interface, protocol, event, service, type, domain, flags, b->userdata); + + } else + b->callback(b, interface, protocol, event, NULL, b->service_type, b->domain_name, flags, b->userdata); + +} + +AvahiSServiceBrowser *avahi_s_service_browser_new( + AvahiServer *server, + AvahiIfIndex interface, + AvahiProtocol protocol, + const char *service_type, + const char *domain, + AvahiLookupFlags flags, + AvahiSServiceBrowserCallback callback, + void* userdata) { + + AvahiSServiceBrowser *b; + AvahiKey *k = NULL; + char n[AVAHI_DOMAIN_NAME_MAX]; + int r; + + assert(server); + assert(callback); + assert(service_type); + + 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, !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, avahi_is_valid_service_type_generic(service_type), AVAHI_ERR_INVALID_SERVICE_TYPE); + + if (!domain) + domain = server->domain_name; + + if ((r = avahi_service_name_join(n, sizeof(n), NULL, service_type, domain)) < 0) { + avahi_server_set_errno(server, r); + return NULL; + } + + if (!(b = avahi_new(AvahiSServiceBrowser, 1))) { + avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY); + return NULL; + } + + b->server = server; + b->domain_name = b->service_type = NULL; + b->callback = callback; + b->userdata = userdata; + b->record_browser = NULL; + + AVAHI_LLIST_PREPEND(AvahiSServiceBrowser, browser, server->service_browsers, b); + + if (!(b->domain_name = avahi_normalize_name_strdup(domain)) || + !(b->service_type = avahi_normalize_name_strdup(service_type))) { + avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY); + goto fail; + } + + if (!(k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR))) { + 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_service_browser_free(b); + return NULL; +} + +void avahi_s_service_browser_free(AvahiSServiceBrowser *b) { + assert(b); + + AVAHI_LLIST_REMOVE(AvahiSServiceBrowser, browser, b->server->service_browsers, b); + + if (b->record_browser) + avahi_s_record_browser_free(b->record_browser); + + avahi_free(b->domain_name); + avahi_free(b->service_type); + avahi_free(b); +} |