#!/bin/sh
#*=====================================================================*/
#*    serrano/prgm/project/bigloo/bigloo/autoconf/avahi                */
#*    -------------------------------------------------------------    */
#*    Author      :  Manuel Serrano                                    */
#*    Creation    :  Thu Dec 27 06:26:38 2007                          */
#*    Last change :  Mon Jul 10 14:01:40 2023 (serrano)                */
#*    Copyright   :  2007-23 Manuel Serrano                            */
#*    -------------------------------------------------------------    */
#*    Check if AVAHI is available.                                     */
#*=====================================================================*/

#*---------------------------------------------------------------------*/
#*    flags                                                            */
#*---------------------------------------------------------------------*/
cflags=
libs=

#*---------------------------------------------------------------------*/
#*    We parse the arguments                                           */
#*---------------------------------------------------------------------*/
while : ; do
  case $1 in
    "")
      break;;

    --cflags=*|-cflags=*)
      cflags="`echo $1 | sed 's/^[-a-z]*=//'`";;

    --libs=*|-libs=*)
      libs="`echo $1 | sed 's/^[-a-z]*=//'`";;

    -*)
      echo "Unknown option \"$1\", ignored" >&2;;
  esac
  shift
done


file=$TMP/actest$USER
aout=$TMP/Xactest$USER

#*---------------------------------------------------------------------*/
#*    compile                                                          */
#*---------------------------------------------------------------------*/
compile="$CC $cflags $file.c -o $aout $libs >/dev/null"

#*---------------------------------------------------------------------*/
#*    The test C file                                                  */
#*---------------------------------------------------------------------*/
if( test -f $file.c ); then
   rm -f $file.c || exit $?
fi

#*---------------------------------------------------------------------*/
#*    Test                                                             */
#*---------------------------------------------------------------------*/
cat > $file.c <<EOF
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <time.h>

#include <avahi-client/client.h>
#include <avahi-client/lookup.h>

#include <avahi-common/simple-watch.h>
#include <avahi-common/malloc.h>
#include <avahi-common/error.h>

static AvahiSimplePoll *simple_poll = NULL;

static void resolve_callback(
    AvahiServiceResolver *r,
    AVAHI_GCC_UNUSED AvahiIfIndex interface,
    AVAHI_GCC_UNUSED AvahiProtocol protocol,
    AvahiResolverEvent event,
    const char *name,
    const char *type,
    const char *domain,
    const char *host_name,
    const AvahiAddress *address,
    uint16_t port,
    AvahiStringList *txt,
    AvahiLookupResultFlags flags,
    AVAHI_GCC_UNUSED void* userdata) {

    assert(r);

    /* Called whenever a service has been resolved successfully or timed out */

    switch (event) {
        case AVAHI_RESOLVER_FAILURE:
            fprintf(stderr, "(Resolver) Failed to resolve service '%s' of type '%s' in domain '%s': %s\n", name, type, domain, avahi_strerror(avahi_client_errno(avahi_service_resolver_get_client(r))));
            break;

        case AVAHI_RESOLVER_FOUND: {
            char a[AVAHI_ADDRESS_STR_MAX], *t;

            fprintf(stderr, "Service '%s' of type '%s' in domain '%s':\n", name, type, domain);

            avahi_address_snprint(a, sizeof(a), address);
            t = avahi_string_list_to_string(txt);
            fprintf(stderr,
                    "\t%s:%u (%s)\n"
                    "\tTXT=%s\n"
                    "\tcookie is %u\n"
                    "\tis_local: %i\n"
                    "\tour_own: %i\n"
                    "\twide_area: %i\n"
                    "\tmulticast: %i\n"
                    "\tcached: %i\n",
                    host_name, port, a,
                    t,
                    avahi_string_list_get_service_cookie(txt),
                    !!(flags & AVAHI_LOOKUP_RESULT_LOCAL),
                    !!(flags & AVAHI_LOOKUP_RESULT_OUR_OWN),
                    !!(flags & AVAHI_LOOKUP_RESULT_WIDE_AREA),
                    !!(flags & AVAHI_LOOKUP_RESULT_MULTICAST),
                    !!(flags & AVAHI_LOOKUP_RESULT_CACHED));

            avahi_free(t);
        }
    }

    avahi_service_resolver_free(r);
}

static void browse_callback(
    AvahiServiceBrowser *b,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    AvahiBrowserEvent event,
    const char *name,
    const char *type,
    const char *domain,
    AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
    void* userdata) {

    AvahiClient *c = userdata;
    assert(b);

    /* Called whenever a new services becomes available on the LAN or is removed from the LAN */

    switch (event) {
        case AVAHI_BROWSER_FAILURE:

            fprintf(stderr, "(Browser) %s\n", avahi_strerror(avahi_client_errno(avahi_service_browser_get_client(b))));
            avahi_simple_poll_quit(simple_poll);
            return;

        case AVAHI_BROWSER_NEW:
            fprintf(stderr, "(Browser) NEW: service '%s' of type '%s' in domain '%s'\n", name, type, domain);

            /* We ignore the returned resolver object. In the callback
               function we free it. If the server is terminated before
               the callback function is called the server will free
               the resolver for us. */

            if (!(avahi_service_resolver_new(c, interface, protocol, name, type, domain, AVAHI_PROTO_UNSPEC, 0, resolve_callback, c)))
                fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_client_errno(c)));

            break;

        case AVAHI_BROWSER_REMOVE:
            fprintf(stderr, "(Browser) REMOVE: service '%s' of type '%s' in domain '%s'\n", name, type, domain);
            break;

        case AVAHI_BROWSER_ALL_FOR_NOW:
        case AVAHI_BROWSER_CACHE_EXHAUSTED:
            fprintf(stderr, "(Browser) %s\n", event == AVAHI_BROWSER_CACHE_EXHAUSTED ? "CACHE_EXHAUSTED" : "ALL_FOR_NOW");
            break;

       default:
	  fprintf( stderr, "DEFAULT %d\n", event );
	  break;
    }
}

static void client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UNUSED void * userdata) {
    assert(c);

    /* Called whenever the client or server state changes */

    if (state == AVAHI_CLIENT_FAILURE) {
        fprintf(stderr, "Server connection failure: %s\n", avahi_strerror(avahi_client_errno(c)));
        avahi_simple_poll_quit(simple_poll);
    }
}

int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
    AvahiClient *client = NULL;
    AvahiServiceBrowser *sb = NULL;
    int error;
    int ret = 1;
    char *type = argc < 2 ? "_printer._tcp" : argv[ 1 ];

    /* Allocate main loop object */
    if (!(simple_poll = avahi_simple_poll_new())) {
        fprintf(stderr, "Failed to create simple poll object.\n");
        goto fail;
    }

    /* 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;
    }

    /* Create the service browser */
    if (!(sb = avahi_service_browser_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, type, NULL, 0, browse_callback, client))) {
        fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_client_errno(client)));
        goto fail;
    }

    /* Run the main loop */
    avahi_simple_poll_loop(simple_poll);

    ret = 0;

fail:

    /* Cleanup things */
    if (sb)
        avahi_service_browser_free(sb);

    if (client)
        avahi_client_free(client);

    if (simple_poll)
        avahi_simple_poll_free(simple_poll);

    return ret;
}
EOF

#*---------------------------------------------------------------------*/
#*    Compilation test                                                 */
#*---------------------------------------------------------------------*/
if eval "$BUILDSH $compile"; then
   echo "yes"
else
   echo "no"
fi

\rm -f $file.*
\rm -f $aout
\rm -rf $aout*

exit 0
