+++ /dev/null
-/***
- 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 <time.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-
-#include <avahi-client/client.h>
-#include <avahi-client/publish.h>
-
-#include <avahi-common/alternative.h>
-#include <avahi-common/simple-watch.h>
-#include <avahi-common/malloc.h>
-#include <avahi-common/error.h>
-#include <avahi-common/timeval.h>
-
-static AvahiEntryGroup *group = NULL;
-static AvahiSimplePoll *simple_poll = NULL;
-static char *name = NULL;
-
-static void create_services(AvahiClient *c);
-
-static void entry_group_callback(AvahiEntryGroup *g, AvahiEntryGroupState state, AVAHI_GCC_UNUSED void *userdata) {
- assert(g == group || group == NULL);
- group = g;
-
- /* Called whenever the entry group state changes */
-
- switch (state) {
- case AVAHI_ENTRY_GROUP_ESTABLISHED :
- /* The entry group has been established successfully */
- fprintf(stderr, "Service '%s' successfully established.\n", name);
- break;
-
- case AVAHI_ENTRY_GROUP_COLLISION : {
- char *n;
-
- /* A service name collision with a remote service
- * happened. Let's pick a new name */
- n = avahi_alternative_service_name(name);
- avahi_free(name);
- name = n;
-
- fprintf(stderr, "Service name collision, renaming service to '%s'\n", name);
-
- /* And recreate the services */
- create_services(avahi_entry_group_get_client(g));
- break;
- }
-
- case AVAHI_ENTRY_GROUP_FAILURE :
-
- fprintf(stderr, "Entry group failure: %s\n", avahi_strerror(avahi_client_errno(avahi_entry_group_get_client(g))));
-
- /* Some kind of failure happened while we were registering our services */
- avahi_simple_poll_quit(simple_poll);
- break;
-
- case AVAHI_ENTRY_GROUP_UNCOMMITED:
- case AVAHI_ENTRY_GROUP_REGISTERING:
- ;
- }
-}
-
-static void create_services(AvahiClient *c) {
- char *n, r[128];
- int ret;
- assert(c);
-
- /* If this is the first time we're called, let's create a new
- * entry group if necessary */
-
- if (!group)
- if (!(group = avahi_entry_group_new(c, entry_group_callback, NULL))) {
- fprintf(stderr, "avahi_entry_group_new() failed: %s\n", avahi_strerror(avahi_client_errno(c)));
- goto fail;
- }
-
- /* If the group is empty (either because it was just created, or
- * because it was reset previously, add our entries. */
-
- if (avahi_entry_group_is_empty(group)) {
- fprintf(stderr, "Adding service '%s'\n", name);
-
- /* Create some random TXT data */
- snprintf(r, sizeof(r), "random=%i", rand());
-
- /* We will now add two services and one subtype to the entry
- * group. The two services have the same name, but differ in
- * the service type (IPP vs. BSD LPR). Only services with the
- * same name should be put in the same entry group. */
-
- /* Add the service for IPP */
- if ((ret = avahi_entry_group_add_service(group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, name, "_ipp._tcp", NULL, NULL, 651, "test=blah", r, NULL)) < 0) {
-
- if (ret == AVAHI_ERR_COLLISION)
- goto collision;
-
- fprintf(stderr, "Failed to add _ipp._tcp service: %s\n", avahi_strerror(ret));
- goto fail;
- }
-
- /* Add the same service for BSD LPR */
- if ((ret = avahi_entry_group_add_service(group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, name, "_printer._tcp", NULL, NULL, 515, NULL)) < 0) {
-
- if (ret == AVAHI_ERR_COLLISION)
- goto collision;
-
- fprintf(stderr, "Failed to add _printer._tcp service: %s\n", avahi_strerror(ret));
- goto fail;
- }
-
- /* Add an additional (hypothetic) subtype */
- if ((ret = avahi_entry_group_add_service_subtype(group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, name, "_printer._tcp", NULL, "_magic._sub._printer._tcp") < 0)) {
- fprintf(stderr, "Failed to add subtype _magic._sub._printer._tcp: %s\n", avahi_strerror(ret));
- goto fail;
- }
-
- /* Tell the server to register the service */
- if ((ret = avahi_entry_group_commit(group)) < 0) {
- fprintf(stderr, "Failed to commit entry group: %s\n", avahi_strerror(ret));
- goto fail;
- }
- }
-
- return;
-
-collision:
-
- /* A service name collision with a local service happened. Let's
- * pick a new name */
- n = avahi_alternative_service_name(name);
- avahi_free(name);
- name = n;
-
- fprintf(stderr, "Service name collision, renaming service to '%s'\n", name);
-
- avahi_entry_group_reset(group);
-
- create_services(c);
- return;
-
-fail:
- avahi_simple_poll_quit(simple_poll);
-}
-
-static void client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UNUSED void * userdata) {
- assert(c);
-
- /* Called whenever the client or server state changes */
-
- switch (state) {
- case AVAHI_CLIENT_S_RUNNING:
-
- /* The server has startup successfully and registered its host
- * name on the network, so it's time to create our services */
- create_services(c);
- break;
-
- case AVAHI_CLIENT_FAILURE:
-
- fprintf(stderr, "Client failure: %s\n", avahi_strerror(avahi_client_errno(c)));
- avahi_simple_poll_quit(simple_poll);
-
- break;
-
- case AVAHI_CLIENT_S_COLLISION:
-
- /* Let's drop our registered services. When the server is back
- * in AVAHI_SERVER_RUNNING state we will register them
- * again with the new host name. */
-
- case AVAHI_CLIENT_S_REGISTERING:
-
- /* The server records are now being established. This
- * might be caused by a host name change. We need to wait
- * for our own records to register until the host name is
- * properly esatblished. */
-
- if (group)
- avahi_entry_group_reset(group);
-
- break;
-
- case AVAHI_CLIENT_CONNECTING:
- ;
- }
-}
-
-static void modify_callback(AVAHI_GCC_UNUSED AvahiTimeout *e, void *userdata) {
- AvahiClient *client = userdata;
-
- fprintf(stderr, "Doing some weird modification\n");
-
- avahi_free(name);
- name = avahi_strdup("Modified MegaPrinter");
-
- /* If the server is currently running, we need to remove our
- * service and create it anew */
- if (avahi_client_get_state(client) == AVAHI_CLIENT_S_RUNNING) {
-
- /* Remove the old services */
- if (group)
- avahi_entry_group_reset(group);
-
- /* And create them again with the new name */
- create_services(client);
- }
-}
-
-int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
- AvahiClient *client = NULL;
- int error;
- int ret = 1;
- struct timeval tv;
-
- /* Allocate main loop object */
- if (!(simple_poll = avahi_simple_poll_new())) {
- fprintf(stderr, "Failed to create simple poll object.\n");
- goto fail;
- }
-
- name = avahi_strdup("MegaPrinter");
-
- /* Allocate a new client */
- client = avahi_client_new(avahi_simple_poll_get(simple_poll), 0, client_callback, NULL, &error);
-
- /* Check wether creating the client object succeeded */
- if (!client) {
- fprintf(stderr, "Failed to create client: %s\n", avahi_strerror(error));
- goto fail;
- }
-
- /* After 10s do some weird modification to the service */
- avahi_simple_poll_get(simple_poll)->timeout_new(
- avahi_simple_poll_get(simple_poll),
- avahi_elapse_time(&tv, 1000*10, 0),
- modify_callback,
- client);
-
- /* Run the main loop */
- avahi_simple_poll_loop(simple_poll);
-
- ret = 0;
-
-fail:
-
- /* Cleanup things */
-
- if (client)
- avahi_client_free(client);
-
- if (simple_poll)
- avahi_simple_poll_free(simple_poll);
-
- avahi_free(name);
-
- return ret;
-}
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