X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=examples%2Fcore-publish-service.c;h=e1afe5164f89054533bac27f5ffb71bda065e628;hb=1a5dff7d166883e99fe1dba62dc3c407a9f7e332;hp=62badf39091437b09aecbbb6610afe70e02655a1;hpb=424aefe8a431b79496672799dc4f4430fa935252;p=catta diff --git a/examples/core-publish-service.c b/examples/core-publish-service.c index 62badf3..e1afe51 100644 --- a/examples/core-publish-service.c +++ b/examples/core-publish-service.c @@ -1,18 +1,16 @@ -/* $Id$ */ - /*** 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 @@ -28,12 +26,12 @@ #include #include -#include -#include -#include -#include -#include -#include +#include +#include +#include +#include +#include +#include static AvahiSEntryGroup *group = NULL; static AvahiSimplePoll *simple_poll = NULL; @@ -41,28 +39,46 @@ static char *name = NULL; static void create_services(AvahiServer *s); -static void entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, void *userdata) { +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 */ - if (state == AVAHI_ENTRY_GROUP_ESTABLISHED) - /* The entry group has been established successfully */ - fprintf(stderr, "Service '%s' successfully established.\n", name); - - else if (state == AVAHI_ENTRY_GROUP_COLLISION) { - char *n; + 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; + } - /* A service name collision happened. Let's pick a new name */ - n = avahi_alternative_service_name(name); - avahi_free(name); - name = n; + case AVAHI_ENTRY_GROUP_FAILURE : - fprintf(stderr, "Service name collision, renaming service to '%s'\n", name); + fprintf(stderr, "Entry group failure: %s\n", avahi_strerror(avahi_server_errno(s))); - /* And recreate the services */ - create_services(s); + /* 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: + ; } } @@ -72,13 +88,12 @@ static void create_services(AvahiServer *s) { assert(s); /* If this is the first time we're called, let's create a new entry group */ - if (!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 */ @@ -96,6 +111,12 @@ static void create_services(AvahiServer *s) { 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)); @@ -106,50 +127,74 @@ static void create_services(AvahiServer *s) { fail: avahi_simple_poll_quit(simple_poll); - return; } -static void server_callback(AvahiServer *s, AvahiServerState state, void * userdata) { +static void server_callback(AvahiServer *s, AvahiServerState state, AVAHI_GCC_UNUSED void * userdata) { assert(s); /* Called whenever the server state changes */ - if (state == AVAHI_SERVER_RUNNING) - /* The serve has startup successfully and registered its host - * name on the network, so it's time to create our services */ - create_services(s); - - else if (state == 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)); + 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; + } - 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); + /* Fall through */ + + case AVAHI_SERVER_REGISTERING: + + /* 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: + ; } } -int main(int argc, char*argv[]) { +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)); @@ -158,14 +203,15 @@ int main(int argc, char*argv[]) { 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; - + config.publish_no_reverse = 1; + /* Allocate a new server */ server = avahi_server_new(avahi_simple_poll_get(simple_poll), &config, server_callback, NULL, &error); @@ -177,19 +223,15 @@ int main(int argc, char*argv[]) { fprintf(stderr, "Failed to create server: %s\n", avahi_strerror(error)); goto fail; } - + /* Run the main loop */ - for (;;) - if (avahi_simple_poll_iterate(simple_poll, -1) != 0) - break; - + avahi_simple_poll_loop(simple_poll); + ret = 0; - + fail: - + /* Cleanup things */ - if (group) - avahi_s_entry_group_free(group); if (server) avahi_server_free(server); @@ -198,6 +240,6 @@ fail: avahi_simple_poll_free(simple_poll); avahi_free(name); - + return ret; }