GDP

/* vim: set ai sw=4 sts=4 ts=4 :*/

/*

**        Advertise (publish) information about the GDP router

**

**                This should really be done automatically by the GDP Router

**                itself, but for the time being this is a stop-gap.

**

**        ----- BEGIN LICENSE BLOCK -----

**        Applications for the Global Data Plane

**        From the Ubiquitous Swarm Lab, 490 Cory Hall, U.C. Berkeley.

**

**        Copyright (c) 2015-2019, Regents of the University of California.

**        All rights reserved.

**

**        Permission is hereby granted, without written agreement and without

**        license or royalty fees, to use, copy, modify, and distribute this

**        software and its documentation for any purpose, provided that the above

**        copyright notice and the following two paragraphs appear in all copies

**        of this software.

**

**        IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,

**        SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST

**        PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION,

**        EVEN IF REGENTS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

**

**        REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT

**        LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

**        FOR A PARTICULAR PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION,

**        IF ANY, PROVIDED HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO

**        OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,

**        OR MODIFICATIONS.

**        ----- END LICENSE BLOCK -----

*/

#define GDP_PORT_DEFAULT                        8007

#include <gdp/gdp_zc_server.h>

#include <ep/ep.h>

#include <ep/ep_app.h>

#include <getopt.h>

#include <stdio.h>

#include <stdlib.h>

#include <sysexits.h>

#include <unistd.h>

void

usage(void)

{

        fprintf(stderr,

                        "Usage: %s [-i instance] [-p port]\n",

                        ep_app_getprogname());

        exit(EX_USAGE);

}

int

main(int argc, char **argv)

{

#if GDP_OSCF_USE_ZEROCONF

        uint16_t port;

        char *instance = NULL;

        char instancebuf[120];

        int opt;

        ep_lib_init(0);

        ep_adm_readparams("gdp");

        port = ep_adm_getintparam("swarm.gdp.router.port", GDP_PORT_DEFAULT);

        while ((opt = getopt(argc, argv, "i:p:")) > 0)

        {

                switch (opt)

                {

                case 'i':                                // instance name

                        instance = optarg;

                        break;

                case 'p':

                        port = atoi(optarg);

                        break;

                default:

                        usage();

                }

        }

        if (instance == NULL)

        {

                char hostname[64];

                if (gethostname(hostname, sizeof hostname) < 0)

                        ep_app_abort("cannot get host name");

                snprintf(instancebuf, sizeof instancebuf, "GDP Router on %s", hostname);

                instance = instancebuf;

        }

        printf("advertise gdp '%s' on %d\n", instance, port);

        gdp_zc_publish(instance, port);

        printf("do other stuff here\n");

        sleep(300);

        printf("terminating...\n");

        return 0;

#else // GDP_OSCF_USE_ZEROCONF

        fprintf(stderr, "gdp-zcpublish: no Avahi available\n");

        return 1;

#endif // GDP_OSCF_USE_ZEROCONF

}

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