diff options
Diffstat (limited to 'trunk/avahi-core/resolve-service.c')
| -rw-r--r-- | trunk/avahi-core/resolve-service.c | 491 |
1 files changed, 0 insertions, 491 deletions
diff --git a/trunk/avahi-core/resolve-service.c b/trunk/avahi-core/resolve-service.c deleted file mode 100644 index 1ad6078..0000000 --- a/trunk/avahi-core/resolve-service.c +++ /dev/null @@ -1,491 +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 <stdio.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 "browse.h" -#include "log.h" - -#define TIMEOUT_MSEC 5000 - -struct AvahiSServiceResolver { - AvahiServer *server; - char *service_name; - char *service_type; - char *domain_name; - AvahiProtocol address_protocol; - - AvahiIfIndex interface; - AvahiProtocol protocol; - - AvahiSRecordBrowser *record_browser_srv; - AvahiSRecordBrowser *record_browser_txt; - AvahiSRecordBrowser *record_browser_a; - AvahiSRecordBrowser *record_browser_aaaa; - - AvahiRecord *srv_record, *txt_record, *address_record; - AvahiLookupResultFlags srv_flags, txt_flags, address_flags; - - AvahiSServiceResolverCallback callback; - void* userdata; - AvahiLookupFlags user_flags; - - AvahiTimeEvent *time_event; - - AVAHI_LLIST_FIELDS(AvahiSServiceResolver, resolver); -}; - -static void finish(AvahiSServiceResolver *r, AvahiResolverEvent event) { - AvahiLookupResultFlags flags; - - assert(r); - - if (r->time_event) { - avahi_time_event_free(r->time_event); - r->time_event = NULL; - } - - flags = - r->txt_flags | - r->srv_flags | - r->address_flags; - - switch (event) { - case AVAHI_RESOLVER_FAILURE: - - r->callback( - r, - r->interface, - r->protocol, - event, - r->service_name, - r->service_type, - r->domain_name, - NULL, - NULL, - 0, - NULL, - flags, - r->userdata); - - break; - - case AVAHI_RESOLVER_FOUND: { - AvahiAddress a; - - assert(event == AVAHI_RESOLVER_FOUND); - - assert(r->srv_record); - - if (r->address_record) { - switch (r->address_record->key->type) { - case AVAHI_DNS_TYPE_A: - a.proto = AVAHI_PROTO_INET; - a.data.ipv4 = r->address_record->data.a.address; - break; - - case AVAHI_DNS_TYPE_AAAA: - a.proto = AVAHI_PROTO_INET6; - a.data.ipv6 = r->address_record->data.aaaa.address; - break; - - default: - assert(0); - } - } - - r->callback( - r, - r->interface, - r->protocol, - event, - r->service_name, - r->service_type, - r->domain_name, - r->srv_record->data.srv.name, - r->address_record ? &a : NULL, - r->srv_record->data.srv.port, - r->txt_record ? r->txt_record->data.txt.string_list : NULL, - flags, - r->userdata); - - break; - } - } -} - -static void time_event_callback(AvahiTimeEvent *e, void *userdata) { - AvahiSServiceResolver *r = userdata; - - assert(e); - assert(r); - - avahi_server_set_errno(r->server, AVAHI_ERR_TIMEOUT); - finish(r, AVAHI_RESOLVER_FAILURE); -} - -static void start_timeout(AvahiSServiceResolver *r) { - struct timeval tv; - assert(r); - - if (r->time_event) - return; - - avahi_elapse_time(&tv, TIMEOUT_MSEC, 0); - - r->time_event = avahi_time_event_new(r->server->time_event_queue, &tv, time_event_callback, r); -} - -static void record_browser_callback( - AvahiSRecordBrowser*rr, - AvahiIfIndex interface, - AvahiProtocol protocol, - AvahiBrowserEvent event, - AvahiRecord *record, - AvahiLookupResultFlags flags, - void* userdata) { - - AvahiSServiceResolver *r = userdata; - - assert(rr); - assert(r); - - if (rr == r->record_browser_aaaa || rr == r->record_browser_a) - r->address_flags = flags; - else if (rr == r->record_browser_srv) - r->srv_flags = flags; - else if (rr == r->record_browser_txt) - r->txt_flags = flags; - - switch (event) { - - case AVAHI_BROWSER_NEW: { - int changed = 0; - assert(record); - - if (r->interface > 0 && interface > 0 && interface != r->interface) - return; - - if (r->protocol != AVAHI_PROTO_UNSPEC && protocol != AVAHI_PROTO_UNSPEC && protocol != r->protocol) - return; - - if (r->interface <= 0) - r->interface = interface; - - if (r->protocol == AVAHI_PROTO_UNSPEC) - r->protocol = protocol; - - switch (record->key->type) { - case AVAHI_DNS_TYPE_SRV: - if (!r->srv_record) { - r->srv_record = avahi_record_ref(record); - changed = 1; - - if (r->record_browser_a) { - avahi_s_record_browser_free(r->record_browser_a); - r->record_browser_a = NULL; - } - - if (r->record_browser_aaaa) { - avahi_s_record_browser_free(r->record_browser_aaaa); - r->record_browser_aaaa = NULL; - } - - if (!(r->user_flags & AVAHI_LOOKUP_NO_ADDRESS)) { - - if (r->address_protocol == AVAHI_PROTO_INET || r->address_protocol == AVAHI_PROTO_UNSPEC) { - AvahiKey *k = avahi_key_new(r->srv_record->data.srv.name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A); - r->record_browser_a = avahi_s_record_browser_new(r->server, r->interface, r->protocol, k, r->user_flags & ~(AVAHI_LOOKUP_NO_TXT|AVAHI_LOOKUP_NO_ADDRESS), record_browser_callback, r); - avahi_key_unref(k); - } - - if (r->address_protocol == AVAHI_PROTO_INET6 || r->address_protocol == AVAHI_PROTO_UNSPEC) { - AvahiKey *k = avahi_key_new(r->srv_record->data.srv.name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA); - r->record_browser_aaaa = avahi_s_record_browser_new(r->server, r->interface, r->protocol, k, r->user_flags & ~(AVAHI_LOOKUP_NO_TXT|AVAHI_LOOKUP_NO_ADDRESS), record_browser_callback, r); - avahi_key_unref(k); - } - } - } - break; - - case AVAHI_DNS_TYPE_TXT: - - assert(!(r->user_flags & AVAHI_LOOKUP_NO_TXT)); - - if (!r->txt_record) { - r->txt_record = avahi_record_ref(record); - changed = 1; - } - break; - - case AVAHI_DNS_TYPE_A: - case AVAHI_DNS_TYPE_AAAA: - - assert(!(r->user_flags & AVAHI_LOOKUP_NO_ADDRESS)); - - if (!r->address_record) { - r->address_record = avahi_record_ref(record); - changed = 1; - } - break; - - default: - abort(); - } - - - if (changed && - r->srv_record && - (r->txt_record || (r->user_flags & AVAHI_LOOKUP_NO_TXT)) && - (r->address_record || (r->user_flags & AVAHI_LOOKUP_NO_ADDRESS))) - finish(r, AVAHI_RESOLVER_FOUND); - - break; - - } - - case AVAHI_BROWSER_REMOVE: - - assert(record); - - switch (record->key->type) { - case AVAHI_DNS_TYPE_SRV: - - if (r->srv_record && avahi_record_equal_no_ttl(record, r->srv_record)) { - avahi_record_unref(r->srv_record); - r->srv_record = NULL; - - if (r->record_browser_a) { - avahi_s_record_browser_free(r->record_browser_a); - r->record_browser_a = NULL; - } - - if (r->record_browser_aaaa) { - avahi_s_record_browser_free(r->record_browser_aaaa); - r->record_browser_aaaa = NULL; - } - - /** Look for a replacement */ - avahi_s_record_browser_restart(r->record_browser_srv); - start_timeout(r); - } - - break; - - case AVAHI_DNS_TYPE_TXT: - - assert(!(r->user_flags & AVAHI_LOOKUP_NO_TXT)); - - if (r->txt_record && avahi_record_equal_no_ttl(record, r->txt_record)) { - avahi_record_unref(r->txt_record); - r->txt_record = NULL; - - /** Look for a replacement */ - avahi_s_record_browser_restart(r->record_browser_txt); - start_timeout(r); - } - break; - - case AVAHI_DNS_TYPE_A: - case AVAHI_DNS_TYPE_AAAA: - - assert(!(r->user_flags & AVAHI_LOOKUP_NO_ADDRESS)); - - if (r->address_record && avahi_record_equal_no_ttl(record, r->address_record)) { - avahi_record_unref(r->address_record); - r->address_record = NULL; - - /** Look for a replacement */ - if (r->record_browser_aaaa) - avahi_s_record_browser_restart(r->record_browser_aaaa); - if (r->record_browser_a) - avahi_s_record_browser_restart(r->record_browser_a); - start_timeout(r); - } - break; - - default: - abort(); - } - - break; - - case AVAHI_BROWSER_CACHE_EXHAUSTED: - case AVAHI_BROWSER_ALL_FOR_NOW: - break; - - case AVAHI_BROWSER_FAILURE: - - if (rr == r->record_browser_a && r->record_browser_aaaa) { - /* We were looking for both AAAA and A, and the other query is still living, so we'll not die */ - avahi_s_record_browser_free(r->record_browser_a); - r->record_browser_a = NULL; - break; - } - - if (rr == r->record_browser_aaaa && r->record_browser_a) { - /* We were looking for both AAAA and A, and the other query is still living, so we'll not die */ - avahi_s_record_browser_free(r->record_browser_aaaa); - r->record_browser_aaaa = NULL; - break; - } - - /* Hmm, everything's lost, tell the user */ - - if (r->record_browser_srv) - avahi_s_record_browser_free(r->record_browser_srv); - if (r->record_browser_txt) - avahi_s_record_browser_free(r->record_browser_txt); - if (r->record_browser_a) - avahi_s_record_browser_free(r->record_browser_a); - if (r->record_browser_aaaa) - avahi_s_record_browser_free(r->record_browser_aaaa); - - r->record_browser_srv = r->record_browser_txt = r->record_browser_a = r->record_browser_aaaa = NULL; - - finish(r, AVAHI_RESOLVER_FAILURE); - break; - } -} - -AvahiSServiceResolver *avahi_s_service_resolver_new( - AvahiServer *server, - AvahiIfIndex interface, - AvahiProtocol protocol, - const char *name, - const char *type, - const char *domain, - AvahiProtocol aprotocol, - AvahiLookupFlags flags, - AvahiSServiceResolverCallback callback, - void* userdata) { - - AvahiSServiceResolver *r; - AvahiKey *k; - char n[AVAHI_DOMAIN_NAME_MAX]; - int ret; - - assert(server); - assert(type); - 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, !name || avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME); - AVAHI_CHECK_VALIDITY_RETURN_NULL(server, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE); - AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_FLAGS_VALID(flags, AVAHI_LOOKUP_USE_WIDE_AREA|AVAHI_LOOKUP_USE_MULTICAST|AVAHI_LOOKUP_NO_TXT|AVAHI_LOOKUP_NO_ADDRESS), AVAHI_ERR_INVALID_FLAGS); - - if (!domain) - domain = server->domain_name; - - if ((ret = avahi_service_name_join(n, sizeof(n), name, type, domain)) < 0) { - avahi_server_set_errno(server, ret); - return NULL; - } - - if (!(r = avahi_new(AvahiSServiceResolver, 1))) { - avahi_server_set_errno(server, AVAHI_ERR_NO_MEMORY); - return NULL; - } - - r->server = server; - r->service_name = avahi_strdup(name); - r->service_type = avahi_normalize_name_strdup(type); - r->domain_name = avahi_normalize_name_strdup(domain); - r->callback = callback; - r->userdata = userdata; - r->address_protocol = aprotocol; - r->srv_record = r->txt_record = r->address_record = NULL; - r->srv_flags = r->txt_flags = r->address_flags = 0; - r->interface = interface; - r->protocol = protocol; - r->user_flags = flags; - r->record_browser_a = r->record_browser_aaaa = r->record_browser_srv = r->record_browser_txt = NULL; - r->time_event = NULL; - AVAHI_LLIST_PREPEND(AvahiSServiceResolver, resolver, server->service_resolvers, r); - - k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV); - r->record_browser_srv = avahi_s_record_browser_new(server, interface, protocol, k, flags & ~(AVAHI_LOOKUP_NO_TXT|AVAHI_LOOKUP_NO_ADDRESS), record_browser_callback, r); - avahi_key_unref(k); - - if (!r->record_browser_srv) { - avahi_s_service_resolver_free(r); - return NULL; - } - - if (!(flags & AVAHI_LOOKUP_NO_TXT)) { - k = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT); - r->record_browser_txt = avahi_s_record_browser_new(server, interface, protocol, k, flags & ~(AVAHI_LOOKUP_NO_TXT|AVAHI_LOOKUP_NO_ADDRESS), record_browser_callback, r); - avahi_key_unref(k); - - if (!r->record_browser_txt) { - avahi_s_service_resolver_free(r); - return NULL; - } - } - - start_timeout(r); - - return r; -} - -void avahi_s_service_resolver_free(AvahiSServiceResolver *r) { - assert(r); - - AVAHI_LLIST_REMOVE(AvahiSServiceResolver, resolver, r->server->service_resolvers, r); - - if (r->time_event) - avahi_time_event_free(r->time_event); - - if (r->record_browser_srv) - avahi_s_record_browser_free(r->record_browser_srv); - if (r->record_browser_txt) - avahi_s_record_browser_free(r->record_browser_txt); - if (r->record_browser_a) - avahi_s_record_browser_free(r->record_browser_a); - if (r->record_browser_aaaa) - avahi_s_record_browser_free(r->record_browser_aaaa); - - if (r->srv_record) - avahi_record_unref(r->srv_record); - if (r->txt_record) - avahi_record_unref(r->txt_record); - if (r->address_record) - avahi_record_unref(r->address_record); - - avahi_free(r->service_name); - avahi_free(r->service_type); - avahi_free(r->domain_name); - avahi_free(r); -} |