Syncing wide-area branch to latest release.

git-svn-id: file:///home/lennart/svn/public/avahi/branches/federico@1397 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe

1 files changed, 240 insertions, 0 deletions

diff --git a/release-0.6.9/examples/core-publish-service.c b/release-0.6.9/examples/core-publish-service.c
new file mode 100644
index 0000000..65dfe5d
--- /dev/null
+++ b/release-0.6.9/examples/core-publish-service.c
@@ -0,0 +1,240 @@
+/* $Id$ */
+
+/***
+  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 <time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include <avahi-core/core.h>
+#include <avahi-core/publish.h>
+#include <avahi-common/simple-watch.h>
+#include <avahi-common/malloc.h>
+#include <avahi-common/alternative.h>
+#include <avahi-common/error.h>
+
+static AvahiSEntryGroup *group = NULL;
+static AvahiSimplePoll *simple_poll = NULL;
+static char *name = NULL;
+
+static void create_services(AvahiServer *s);
+
+static void entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, AVAHI_GCC_UNUSED void *userdata) {
+    assert(s);
+    assert(g == group);
+
+    /* 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 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(s);
+            break;
+        }
+            
+        case AVAHI_ENTRY_GROUP_FAILURE :
+
+            /* 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(AvahiServer *s) {
+    char r[128];
+    int ret;
+    assert(s);
+
+    /* If this is the first time we're called, let's create a new entry group */
+    if (!group)
+        if (!(group = avahi_s_entry_group_new(s, entry_group_callback, NULL))) {
+            fprintf(stderr, "avahi_entry_group_new() failed: %s\n", avahi_strerror(avahi_server_errno(s)));
+            goto fail;
+        }
+    
+    fprintf(stderr, "Adding service '%s'\n", name);
+
+    /* Create some random TXT data */
+    snprintf(r, sizeof(r), "random=%i", rand());
+
+    /* Add the service for IPP */
+    if ((ret = avahi_server_add_service(s, group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, name, "_ipp._tcp", NULL, NULL, 651, "test=blah", r, NULL)) < 0) {
+        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_server_add_service(s, group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, name, "_printer._tcp", NULL, NULL, 515, NULL)) < 0) {
+        fprintf(stderr, "Failed to add _printer._tcp service: %s\n", avahi_strerror(ret));
+        goto fail;
+    }
+
+    /* Add an additional (hypothetic) subtype */
+    if ((ret = avahi_server_add_service_subtype(s, 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_s_entry_group_commit(group)) < 0) {
+        fprintf(stderr, "Failed to commit entry_group: %s\n", avahi_strerror(ret));
+        goto fail;
+    }
+
+    return;
+
+fail:
+    avahi_simple_poll_quit(simple_poll);
+}
+
+static void server_callback(AvahiServer *s, AvahiServerState state, AVAHI_GCC_UNUSED void * userdata) {
+    assert(s);
+
+    /* Called whenever the server state changes */
+
+    switch (state) {
+
+        case AVAHI_SERVER_RUNNING:
+            /* The serve has startup successfully and registered its host
+             * name on the network, so it's time to create our services */
+            
+            if (!group)
+                create_services(s);
+
+            break;
+
+        case AVAHI_SERVER_COLLISION: {
+            char *n;
+            int r;
+            
+            /* A host name collision happened. Let's pick a new name for the server */
+            n = avahi_alternative_host_name(avahi_server_get_host_name(s));
+            fprintf(stderr, "Host name collision, retrying with '%s'\n", n);
+            r = avahi_server_set_host_name(s, n);
+            avahi_free(n);
+            
+            if (r < 0) {
+                fprintf(stderr, "Failed to set new host name: %s\n", avahi_strerror(r));
+                
+                avahi_simple_poll_quit(simple_poll);
+                return;
+            }
+
+            /* 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. */
+            if (group)
+                avahi_s_entry_group_reset(group);
+
+            break;
+        }
+
+        case AVAHI_SERVER_FAILURE:
+            
+            /* Terminate on failure */
+            
+            fprintf(stderr, "Server failure: %s\n", avahi_strerror(avahi_server_errno(s)));
+            avahi_simple_poll_quit(simple_poll);
+            break;
+
+        case AVAHI_SERVER_INVALID:
+        case AVAHI_SERVER_REGISTERING:
+            ;
+    }
+}
+
+int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
+    AvahiServerConfig config;
+    AvahiServer *server = NULL;
+    int error;
+    int ret = 1;
+    
+    /* Initialize the pseudo-RNG */
+    srand(time(NULL));
+
+    /* 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");
+
+    /* Let's set the host name for this server. */
+    avahi_server_config_init(&config);
+    config.host_name = avahi_strdup("gurkiman");
+    config.publish_workstation = 0;
+    
+    /* Allocate a new server */
+    server = avahi_server_new(avahi_simple_poll_get(simple_poll), &config, server_callback, NULL, &error);
+
+    /* Free the configuration data */
+    avahi_server_config_free(&config);
+
+    /* Check wether creating the server object succeeded */
+    if (!server) {
+        fprintf(stderr, "Failed to create server: %s\n", avahi_strerror(error));
+        goto fail;
+    }
+
+    /* Run the main loop */
+    avahi_simple_poll_loop(simple_poll);
+    
+    ret = 0;
+    
+fail:
+    
+    /* Cleanup things */
+
+    if (server)
+        avahi_server_free(server);
+
+    if (simple_poll)
+        avahi_simple_poll_free(simple_poll);
+
+    avahi_free(name);
+    
+    return ret;
+}