amiga-ntimed/main_amiga_client.c

/*
 * Copyright (c) 2015 Carsten Larsen
 * Copyright (c) 2014 Poul-Henning Kamp
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include "ntimed_platform.h"
#include "ntimed.h"
#include "tz.h"
#include "ntp.h"
#include "udp.h"

#define ARGSFORMAT "P=PARAM/K,T=TRACEFILE/K,Z=TIMEZONE/K,SERVERS/M,SYNC/S,SAVE/S,SHOW/S,QUIET/S"
const char *vers = "\0$VER: ntimed-poll 0.9 (15.04.2015)";

#define PARAM_CLIENT PARAM_INSTANCE
#define PARAM_TABLE_NAME client_param_table
#include "param_instance.h"
#undef PARAM_TABLE_NAME
#undef PARAM_CLIENT

void Time_Amiga(struct todolist *);
extern int validtime;

BOOL savetime;
BOOL started_from_wb;
struct Library *BattClockBase;
struct Library *UtilityBase = NULL;
struct Library *SocketBase  = NULL;
struct RDArgs *rdargs       = NULL;
struct ntp_peerset *nps     = NULL;
struct todolist *tdl        = NULL;
struct udp_socket *usc      = NULL;

struct ntimedargs {
    char *params;
    char *tracefile;
    char *timezone;
    char **servers;
    long synchronize;
    long save;
    long show;
    long quiet;
};

static void init_libs(struct ntimedargs *args);
static void init_logic(struct ntimedargs *args);
static void clean_exit();

int main(int argc, char **argv)
{
    struct ntimedargs args = {
        NULL, NULL, NULL, NULL,
        FALSE, FALSE, FALSE, FALSE
    };

    started_from_wb = (argc == 0);
    atexit(clean_exit);

    if(started_from_wb) {
        args.servers = (char *[]) {
            "0.pool.ntp.org",
            "1.pool.ntp.org",
            "2.pool.ntp.org",
            "3.pool.ntp.org"
        };
        args.synchronize = TRUE;
        args.save = TRUE;
        args.quiet = TRUE;
    } else {
        rdargs = ReadArgs(ARGS_FORMAT, (APTR)&args, NULL);
        if (!rdargs)
        {
            PrintFault(IoErr(), (ARGPTR)argv[0]);
            exit(2);
        }
    }

    if (!args.quiet) {
        EnableDebug();

        if (args.show) {
            EnableTraceDebug();
        }
    }

    init_libs(&args);

    if (args.timezone) {
        ArgTimezone(args.timezone);
    }

    if (args.tracefile) {
        ArgTracefile(args.tracefile);
    }

    init_logic(&args);

    if (args.synchronize) {
        SetSyncTime(10);
    }

    savetime = (BOOL)args.save;

    NTP_PeerSet_Poll(NULL, nps, usc, tdl);
    (void)TODO_Run(NULL, tdl);

    return 0;
}

static void init_libs(struct ntimedargs *args)
{
    if(!(UtilityBase = (struct Library *)OpenLibrary(UTILLIB_NAME, UTILLIB_REV))) {
        Put(NULL, OCX_DIAG, "Cannot open utility library.\n");
        exit(2);
    }

    if (args->save) {
        BattClockBase = OpenResource(BATTCLOCK_NAME);
    }

#ifdef AROS
    if(!(SocketBase = OpenLibrary(BSDLIB_NAME, BSDLIB_REV))) {
        Put(NULL, OCX_DIAG, "No TCP/IP Stack running.\n");
        exit(2);
    }

    if(SocketBaseTags(SBTM_SETVAL(SBTC_ERRNOPTR(sizeof(errno))), (IPTR)&errno,
                      SBTM_SETVAL(SBTC_HERRNOLONGPTR), (IPTR)&h_errno, TAG_DONE)) {
        Put(NULL, OCX_DIAG, "Error initializing bsdsocket.\n");
        exit(2);
    }
#endif
}

static void set_params(char *params)
{
    char *token;
    const char d[2] = ",";

    if (params == NULL)
        return;

    token = strtok(params, d);

    while (token != NULL)
    {
        Param_Tweak(NULL, token);
        token = strtok(NULL, d);
    }
}

static void init_logic(struct ntimedargs *args)
{
    struct ntp_peer *np;
    struct combine_delta *cd;

    int i;
    int npeer = 0;

    Put(NULL, OCX_DEBUG, "Timezone set to %s (UTC%s%.2f) %s\n",
        tza[tzid].abbr,
        tza[tzid].offset < 0.0 ? "-" : "+",
        fabs(tza[tzid].offset),
        tza[tzid].name);

    tdl = TODO_NewList();
    Time_Amiga(tdl);

    PLL_Init();

    nps = NTP_PeerSet_New(NULL);

    Param_Register(client_param_table);
    NF_Init();

    set_params(args->params);

    for (i = 0; args->servers[i]; i++)
        npeer += NTP_PeerSet_Add(NULL, nps, args->servers[i]);

    if (npeer == 0) {
        Put(NULL, OCX_DEBUG, "No NTP peers found\n");
        exit(1);
    }

    Put(NULL, OCX_TRACE, "# NTIMED Format client 1.0\n");
    Put(NULL, OCX_TRACE, "# Found %d peers\n", npeer);
    Param_Report(NULL, OCX_TRACE);

    usc = UdpTimedSocket(NULL);
    if (usc == NULL) {
        Put(NULL, OCX_DEBUG, "Could not open UDP socket\n");
        exit(1);
    }

    cd = CD_New();

    NTP_PeerSet_Foreach(np, nps) {
        NF_New(np);
        np->combiner = CD_AddSource(cd, np->hostname, np->ip);
    }

    if (args->synchronize) {
        Put(NULL, OCX_DEBUG, "Synchronizing local clock to server(s)\n");

    } else {
        Put(NULL, OCX_DEBUG, "Synchronizing ...\n");
    }
}

static void clean_exit()
{
    if (savetime && validtime) {
        Time_Amiga_Save();
        Put(NULL, OCX_DEBUG, "Saved to real-time clock\n");
    }

    ArgTracefile(NULL);

    if(usc) {
        UDP_Socket_Destroy(usc);
        usc = NULL;
    }

    if (UtilityBase != NULL) {
        CloseLibrary(UtilityBase);
        UtilityBase = NULL;
    }

#ifdef AROS
    if (SocketBase != NULL) {
        CloseLibrary(SocketBase);
        SocketBase = NULL;
    }
#endif

    if (rdargs) {
        FreeArgs(rdargs);
        rdargs = NULL;
    }

    freeall();
}