778 lines
22 KiB
C
778 lines
22 KiB
C
/***
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This file is part of avahi.
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avahi is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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avahi is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with avahi; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <dbus/dbus.h>
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#include <avahi-client/client.h>
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#include <avahi-common/dbus.h>
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#include <avahi-common/llist.h>
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#include <avahi-common/error.h>
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#include "avahi-common/avahi-malloc.h"
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#include "client.h"
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#include "internal.h"
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/* AvahiServiceResolver implementation */
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DBusHandlerResult avahi_service_resolver_event (AvahiClient *client, AvahiResolverEvent event, DBusMessage *message) {
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AvahiServiceResolver *r = NULL;
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DBusError error;
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const char *path;
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AvahiStringList *strlst = NULL;
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assert(client);
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assert(message);
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dbus_error_init (&error);
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if (!(path = dbus_message_get_path(message)))
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goto fail;
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for (r = client->service_resolvers; r; r = r->service_resolvers_next)
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if (strcmp (r->path, path) == 0)
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break;
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if (!r)
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goto fail;
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switch (event) {
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case AVAHI_RESOLVER_FOUND: {
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int j;
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int32_t interface, protocol, aprotocol;
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uint32_t flags;
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char *name, *type, *domain, *host, *address;
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uint16_t port;
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DBusMessageIter iter, sub;
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AvahiAddress a;
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if (!dbus_message_get_args(
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message, &error,
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DBUS_TYPE_INT32, &interface,
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DBUS_TYPE_INT32, &protocol,
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DBUS_TYPE_STRING, &name,
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DBUS_TYPE_STRING, &type,
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DBUS_TYPE_STRING, &domain,
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DBUS_TYPE_STRING, &host,
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DBUS_TYPE_INT32, &aprotocol,
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DBUS_TYPE_STRING, &address,
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DBUS_TYPE_UINT16, &port,
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DBUS_TYPE_INVALID) ||
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dbus_error_is_set (&error)) {
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fprintf(stderr, "Failed to parse resolver event.\n");
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goto fail;
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}
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dbus_message_iter_init(message, &iter);
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for (j = 0; j < 9; j++)
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dbus_message_iter_next(&iter);
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if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
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dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_ARRAY) {
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fprintf(stderr, "Error parsing service resolving message\n");
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goto fail;
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}
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strlst = NULL;
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dbus_message_iter_recurse(&iter, &sub);
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for (;;) {
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DBusMessageIter sub2;
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int at;
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const uint8_t *k;
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int n;
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if ((at = dbus_message_iter_get_arg_type(&sub)) == DBUS_TYPE_INVALID)
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break;
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assert(at == DBUS_TYPE_ARRAY);
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if (dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_BYTE) {
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fprintf(stderr, "Error parsing service resolving message\n");
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goto fail;
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}
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dbus_message_iter_recurse(&sub, &sub2);
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k = NULL; n = 0;
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dbus_message_iter_get_fixed_array(&sub2, &k, &n);
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if (k && n > 0)
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strlst = avahi_string_list_add_arbitrary(strlst, k, n);
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dbus_message_iter_next(&sub);
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}
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dbus_message_iter_next(&iter);
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if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) {
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fprintf(stderr, "Failed to parse resolver event.\n");
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goto fail;
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}
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dbus_message_iter_get_basic(&iter, &flags);
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assert(address);
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if (address[0] == 0)
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address = NULL;
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else
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avahi_address_parse(address, (AvahiProtocol) aprotocol, &a);
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r->callback(r, (AvahiIfIndex) interface, (AvahiProtocol) protocol, AVAHI_RESOLVER_FOUND, name, type, domain, host, address ? &a : NULL, port, strlst, (AvahiLookupResultFlags) flags, r->userdata);
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avahi_string_list_free(strlst);
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break;
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}
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case AVAHI_RESOLVER_FAILURE: {
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char *etxt;
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if (!dbus_message_get_args(
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message, &error,
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DBUS_TYPE_STRING, &etxt,
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DBUS_TYPE_INVALID) ||
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dbus_error_is_set (&error)) {
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fprintf(stderr, "Failed to parse resolver event.\n");
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goto fail;
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}
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avahi_client_set_errno(r->client, avahi_error_dbus_to_number(etxt));
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r->callback(r, r->interface, r->protocol, event, r->name, r->type, r->domain, NULL, NULL, 0, NULL, 0, r->userdata);
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break;
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}
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}
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return DBUS_HANDLER_RESULT_HANDLED;
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fail:
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dbus_error_free (&error);
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avahi_string_list_free(strlst);
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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AvahiServiceResolver * avahi_service_resolver_new(
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AvahiClient *client,
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AvahiIfIndex interface,
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AvahiProtocol protocol,
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const char *name,
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const char *type,
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const char *domain,
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AvahiProtocol aprotocol,
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AvahiLookupFlags flags,
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AvahiServiceResolverCallback callback,
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void *userdata) {
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DBusError error;
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AvahiServiceResolver *r = NULL;
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DBusMessage *message = NULL, *reply = NULL;
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int32_t i_interface, i_protocol, i_aprotocol;
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uint32_t u_flags;
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char *path;
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assert(client);
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assert(type);
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if (!domain)
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domain = "";
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if (!name)
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name = "";
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dbus_error_init (&error);
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if (!avahi_client_is_connected(client)) {
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avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
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goto fail;
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}
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if (!(r = avahi_new(AvahiServiceResolver, 1))) {
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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r->client = client;
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r->callback = callback;
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r->userdata = userdata;
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r->path = NULL;
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r->name = r->type = r->domain = NULL;
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r->interface = interface;
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r->protocol = protocol;
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AVAHI_LLIST_PREPEND(AvahiServiceResolver, service_resolvers, client->service_resolvers, r);
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if (name && name[0])
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if (!(r->name = avahi_strdup(name))) {
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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if (!(r->type = avahi_strdup(type))) {
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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if (domain && domain[0])
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if (!(r->domain = avahi_strdup(domain))) {
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "ServiceResolverNew"))) {
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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i_interface = (int32_t) interface;
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i_protocol = (int32_t) protocol;
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i_aprotocol = (int32_t) aprotocol;
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u_flags = (uint32_t) flags;
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if (!(dbus_message_append_args(
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message,
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DBUS_TYPE_INT32, &i_interface,
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DBUS_TYPE_INT32, &i_protocol,
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DBUS_TYPE_STRING, &name,
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DBUS_TYPE_STRING, &type,
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DBUS_TYPE_STRING, &domain,
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DBUS_TYPE_INT32, &i_aprotocol,
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DBUS_TYPE_UINT32, &u_flags,
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DBUS_TYPE_INVALID))) {
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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if (!(reply = dbus_connection_send_with_reply_and_block(client->bus, message, -1, &error)) ||
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dbus_error_is_set(&error)) {
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avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
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goto fail;
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}
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if (!dbus_message_get_args (reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID) ||
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dbus_error_is_set(&error) ||
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!path) {
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avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
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goto fail;
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}
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if (!(r->path = avahi_strdup(path))) {
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/* FIXME: We don't remove the object on the server side */
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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dbus_message_unref(message);
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dbus_message_unref(reply);
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return r;
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fail:
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if (dbus_error_is_set(&error)) {
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avahi_client_set_dbus_error(client, &error);
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dbus_error_free(&error);
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}
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if (r)
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avahi_service_resolver_free(r);
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if (message)
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dbus_message_unref(message);
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if (reply)
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dbus_message_unref(reply);
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return NULL;
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}
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AvahiClient* avahi_service_resolver_get_client (AvahiServiceResolver *r) {
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assert (r);
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return r->client;
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}
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int avahi_service_resolver_free(AvahiServiceResolver *r) {
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AvahiClient *client;
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int ret = AVAHI_OK;
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assert(r);
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client = r->client;
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if (r->path && avahi_client_is_connected(client))
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ret = avahi_client_simple_method_call(client, r->path, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Free");
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AVAHI_LLIST_REMOVE(AvahiServiceResolver, service_resolvers, client->service_resolvers, r);
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avahi_free(r->path);
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avahi_free(r->name);
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avahi_free(r->type);
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avahi_free(r->domain);
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avahi_free(r);
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return ret;
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}
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/* AvahiHostNameResolver implementation */
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DBusHandlerResult avahi_host_name_resolver_event (AvahiClient *client, AvahiResolverEvent event, DBusMessage *message) {
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AvahiHostNameResolver *r = NULL;
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DBusError error;
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const char *path;
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assert(client);
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assert(message);
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dbus_error_init (&error);
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if (!(path = dbus_message_get_path(message)))
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goto fail;
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for (r = client->host_name_resolvers; r; r = r->host_name_resolvers_next)
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if (strcmp (r->path, path) == 0)
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break;
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if (!r)
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goto fail;
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switch (event) {
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case AVAHI_RESOLVER_FOUND: {
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int32_t interface, protocol, aprotocol;
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uint32_t flags;
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char *name, *address;
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AvahiAddress a;
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if (!dbus_message_get_args(
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message, &error,
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DBUS_TYPE_INT32, &interface,
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DBUS_TYPE_INT32, &protocol,
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DBUS_TYPE_STRING, &name,
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DBUS_TYPE_INT32, &aprotocol,
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DBUS_TYPE_STRING, &address,
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DBUS_TYPE_UINT32, &flags,
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DBUS_TYPE_INVALID) ||
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dbus_error_is_set (&error)) {
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fprintf(stderr, "Failed to parse resolver event.\n");
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goto fail;
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}
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assert(address);
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if (!avahi_address_parse(address, (AvahiProtocol) aprotocol, &a)) {
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fprintf(stderr, "Failed to parse address\n");
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goto fail;
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}
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r->callback(r, (AvahiIfIndex) interface, (AvahiProtocol) protocol, AVAHI_RESOLVER_FOUND, name, &a, (AvahiLookupResultFlags) flags, r->userdata);
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break;
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}
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case AVAHI_RESOLVER_FAILURE: {
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char *etxt;
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if (!dbus_message_get_args(
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message, &error,
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DBUS_TYPE_STRING, &etxt,
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DBUS_TYPE_INVALID) ||
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dbus_error_is_set (&error)) {
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fprintf(stderr, "Failed to parse resolver event.\n");
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goto fail;
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}
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avahi_client_set_errno(r->client, avahi_error_dbus_to_number(etxt));
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r->callback(r, r->interface, r->protocol, event, r->host_name, NULL, 0, r->userdata);
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break;
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}
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}
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return DBUS_HANDLER_RESULT_HANDLED;
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fail:
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dbus_error_free (&error);
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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AvahiHostNameResolver * avahi_host_name_resolver_new(
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AvahiClient *client,
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AvahiIfIndex interface,
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AvahiProtocol protocol,
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const char *name,
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AvahiProtocol aprotocol,
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AvahiLookupFlags flags,
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AvahiHostNameResolverCallback callback,
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void *userdata) {
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DBusError error;
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AvahiHostNameResolver *r = NULL;
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DBusMessage *message = NULL, *reply = NULL;
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int32_t i_interface, i_protocol, i_aprotocol;
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uint32_t u_flags;
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char *path;
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assert(client);
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assert(name);
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dbus_error_init (&error);
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if (!avahi_client_is_connected(client)) {
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avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
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goto fail;
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}
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if (!(r = avahi_new(AvahiHostNameResolver, 1))) {
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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r->client = client;
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r->callback = callback;
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r->userdata = userdata;
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r->path = NULL;
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r->interface = interface;
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r->protocol = protocol;
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r->host_name = NULL;
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AVAHI_LLIST_PREPEND(AvahiHostNameResolver, host_name_resolvers, client->host_name_resolvers, r);
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if (!(r->host_name = avahi_strdup(name))) {
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "HostNameResolverNew"))) {
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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i_interface = (int32_t) interface;
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i_protocol = (int32_t) protocol;
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i_aprotocol = (int32_t) aprotocol;
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u_flags = (uint32_t) flags;
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if (!(dbus_message_append_args(
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message,
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DBUS_TYPE_INT32, &i_interface,
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DBUS_TYPE_INT32, &i_protocol,
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DBUS_TYPE_STRING, &name,
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DBUS_TYPE_INT32, &i_aprotocol,
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DBUS_TYPE_UINT32, &u_flags,
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DBUS_TYPE_INVALID))) {
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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if (!(reply = dbus_connection_send_with_reply_and_block(client->bus, message, -1, &error)) ||
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dbus_error_is_set(&error)) {
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avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
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goto fail;
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}
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if (!dbus_message_get_args (reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID) ||
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dbus_error_is_set(&error) ||
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!path) {
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avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
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goto fail;
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}
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if (!(r->path = avahi_strdup(path))) {
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/* FIXME: We don't remove the object on the server side */
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avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
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goto fail;
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}
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dbus_message_unref(message);
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dbus_message_unref(reply);
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return r;
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fail:
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if (dbus_error_is_set(&error)) {
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avahi_client_set_dbus_error(client, &error);
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dbus_error_free(&error);
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}
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if (r)
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avahi_host_name_resolver_free(r);
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if (message)
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dbus_message_unref(message);
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if (reply)
|
|
dbus_message_unref(reply);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
int avahi_host_name_resolver_free(AvahiHostNameResolver *r) {
|
|
int ret = AVAHI_OK;
|
|
AvahiClient *client;
|
|
|
|
assert(r);
|
|
client = r->client;
|
|
|
|
if (r->path && avahi_client_is_connected(client))
|
|
ret = avahi_client_simple_method_call(client, r->path, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Free");
|
|
|
|
AVAHI_LLIST_REMOVE(AvahiHostNameResolver, host_name_resolvers, client->host_name_resolvers, r);
|
|
|
|
avahi_free(r->path);
|
|
avahi_free(r->host_name);
|
|
avahi_free(r);
|
|
|
|
return ret;
|
|
}
|
|
|
|
AvahiClient* avahi_host_name_resolver_get_client (AvahiHostNameResolver *r) {
|
|
assert (r);
|
|
|
|
return r->client;
|
|
}
|
|
|
|
/* AvahiAddressResolver implementation */
|
|
|
|
DBusHandlerResult avahi_address_resolver_event (AvahiClient *client, AvahiResolverEvent event, DBusMessage *message) {
|
|
AvahiAddressResolver *r = NULL;
|
|
DBusError error;
|
|
const char *path;
|
|
|
|
assert(client);
|
|
assert(message);
|
|
|
|
dbus_error_init (&error);
|
|
|
|
if (!(path = dbus_message_get_path(message)))
|
|
goto fail;
|
|
|
|
for (r = client->address_resolvers; r; r = r->address_resolvers_next)
|
|
if (strcmp (r->path, path) == 0)
|
|
break;
|
|
|
|
if (!r)
|
|
goto fail;
|
|
|
|
switch (event) {
|
|
case AVAHI_RESOLVER_FOUND: {
|
|
int32_t interface, protocol, aprotocol;
|
|
uint32_t flags;
|
|
char *name, *address;
|
|
AvahiAddress a;
|
|
|
|
if (!dbus_message_get_args(
|
|
message, &error,
|
|
DBUS_TYPE_INT32, &interface,
|
|
DBUS_TYPE_INT32, &protocol,
|
|
DBUS_TYPE_INT32, &aprotocol,
|
|
DBUS_TYPE_STRING, &address,
|
|
DBUS_TYPE_STRING, &name,
|
|
DBUS_TYPE_UINT32, &flags,
|
|
DBUS_TYPE_INVALID) ||
|
|
dbus_error_is_set (&error)) {
|
|
fprintf(stderr, "Failed to parse resolver event.\n");
|
|
goto fail;
|
|
}
|
|
|
|
assert(address);
|
|
if (!avahi_address_parse(address, (AvahiProtocol) aprotocol, &a)) {
|
|
fprintf(stderr, "Failed to parse address\n");
|
|
goto fail;
|
|
}
|
|
|
|
r->callback(r, (AvahiIfIndex) interface, (AvahiProtocol) protocol, AVAHI_RESOLVER_FOUND, &a, name, (AvahiLookupResultFlags) flags, r->userdata);
|
|
break;
|
|
}
|
|
|
|
case AVAHI_RESOLVER_FAILURE: {
|
|
char *etxt;
|
|
|
|
if (!dbus_message_get_args(
|
|
message, &error,
|
|
DBUS_TYPE_STRING, &etxt,
|
|
DBUS_TYPE_INVALID) ||
|
|
dbus_error_is_set (&error)) {
|
|
fprintf(stderr, "Failed to parse resolver event.\n");
|
|
goto fail;
|
|
}
|
|
|
|
avahi_client_set_errno(r->client, avahi_error_dbus_to_number(etxt));
|
|
r->callback(r, r->interface, r->protocol, event, &r->address, NULL, 0, r->userdata);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return DBUS_HANDLER_RESULT_HANDLED;
|
|
|
|
fail:
|
|
dbus_error_free (&error);
|
|
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
|
|
}
|
|
|
|
AvahiAddressResolver * avahi_address_resolver_new(
|
|
AvahiClient *client,
|
|
AvahiIfIndex interface,
|
|
AvahiProtocol protocol,
|
|
const AvahiAddress *a,
|
|
AvahiLookupFlags flags,
|
|
AvahiAddressResolverCallback callback,
|
|
void *userdata) {
|
|
|
|
DBusError error;
|
|
AvahiAddressResolver *r = NULL;
|
|
DBusMessage *message = NULL, *reply = NULL;
|
|
int32_t i_interface, i_protocol;
|
|
uint32_t u_flags;
|
|
char *path;
|
|
char addr[AVAHI_ADDRESS_STR_MAX], *address = addr;
|
|
|
|
assert(client);
|
|
assert(a);
|
|
|
|
dbus_error_init (&error);
|
|
|
|
if (!avahi_address_snprint (addr, sizeof(addr), a)) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_INVALID_ADDRESS);
|
|
return NULL;
|
|
}
|
|
|
|
if (!avahi_client_is_connected(client)) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_BAD_STATE);
|
|
goto fail;
|
|
}
|
|
|
|
if (!(r = avahi_new(AvahiAddressResolver, 1))) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
|
|
r->client = client;
|
|
r->callback = callback;
|
|
r->userdata = userdata;
|
|
r->path = NULL;
|
|
r->interface = interface;
|
|
r->protocol = protocol;
|
|
r->address = *a;
|
|
|
|
AVAHI_LLIST_PREPEND(AvahiAddressResolver, address_resolvers, client->address_resolvers, r);
|
|
|
|
if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "AddressResolverNew"))) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
|
|
i_interface = (int32_t) interface;
|
|
i_protocol = (int32_t) protocol;
|
|
u_flags = (uint32_t) flags;
|
|
|
|
if (!(dbus_message_append_args(
|
|
message,
|
|
DBUS_TYPE_INT32, &i_interface,
|
|
DBUS_TYPE_INT32, &i_protocol,
|
|
DBUS_TYPE_STRING, &address,
|
|
DBUS_TYPE_UINT32, &u_flags,
|
|
DBUS_TYPE_INVALID))) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
|
|
if (!(reply = dbus_connection_send_with_reply_and_block(client->bus, message, -1, &error)) ||
|
|
dbus_error_is_set(&error)) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
|
|
goto fail;
|
|
}
|
|
|
|
if (!dbus_message_get_args (reply, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID) ||
|
|
dbus_error_is_set(&error) ||
|
|
!path) {
|
|
avahi_client_set_errno(client, AVAHI_ERR_DBUS_ERROR);
|
|
goto fail;
|
|
}
|
|
|
|
if (!(r->path = avahi_strdup(path))) {
|
|
|
|
/* FIXME: We don't remove the object on the server side */
|
|
|
|
avahi_client_set_errno(client, AVAHI_ERR_NO_MEMORY);
|
|
goto fail;
|
|
}
|
|
|
|
dbus_message_unref(message);
|
|
dbus_message_unref(reply);
|
|
|
|
return r;
|
|
|
|
fail:
|
|
|
|
if (dbus_error_is_set(&error)) {
|
|
avahi_client_set_dbus_error(client, &error);
|
|
dbus_error_free(&error);
|
|
}
|
|
|
|
if (r)
|
|
avahi_address_resolver_free(r);
|
|
|
|
if (message)
|
|
dbus_message_unref(message);
|
|
|
|
if (reply)
|
|
dbus_message_unref(reply);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
AvahiClient* avahi_address_resolver_get_client (AvahiAddressResolver *r) {
|
|
assert (r);
|
|
|
|
return r->client;
|
|
}
|
|
|
|
int avahi_address_resolver_free(AvahiAddressResolver *r) {
|
|
AvahiClient *client;
|
|
int ret = AVAHI_OK;
|
|
|
|
assert(r);
|
|
client = r->client;
|
|
|
|
if (r->path && avahi_client_is_connected(client))
|
|
ret = avahi_client_simple_method_call(client, r->path, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Free");
|
|
|
|
AVAHI_LLIST_REMOVE(AvahiAddressResolver, address_resolvers, client->address_resolvers, r);
|
|
|
|
avahi_free(r->path);
|
|
avahi_free(r);
|
|
|
|
return ret;
|
|
}
|
|
|