/* start the given remote INDI driver connection.
* exit if trouble.
*/
void
startRemoteDvr (DvrInfo *dp)
{
Msg *mp;
char dev[1024];
char host[1024];
char buf[1024];
int indi_port, sockfd;
/* extract host and port */
indi_port = INDIPORT;
if (sscanf (dp->name, "%[^@]@%[^:]:%d", dev, host, &indi_port) < 2) {
fprintf (stderr, "Bad remote device syntax: %s\n", dp->name);
Bye();
}
/* connect */
sockfd = openINDIServer (host, indi_port);
/* record flag pid, io channels, init lp and snoop list */
dp->pid = REMOTEDVR;
dp->rfd = sockfd;
dp->wfd = sockfd;
dp->lp = newLilXML();
dp->msgq = newFQ(1);
dp->sprops = (Property*) malloc (1); /* seed for realloc */
dp->nsprops = 0;
dp->nsent = 0;
dp->active = 1;
dp->ndev = 1;
dp->dev = (char **) malloc(sizeof(char *));
/* N.B. storing name now is key to limiting outbound traffic to this
* dev.
*/
dp->dev[0] = (char *) malloc(MAXINDIDEVICE * sizeof(char));
strncpy (dp->dev[0], dev, MAXINDIDEVICE-1);
dp->dev[0][MAXINDIDEVICE-1] = '\0';
/* Sending getProperties with device lets remote server limit its
* outbound (and our inbound) traffic on this socket to this device.
*/
mp = newMsg();
pushFQ (dp->msgq, mp);
sprintf (buf, "<getProperties device='%s' version='%g'/>\n",
dp->dev[0], INDIV);
setMsgStr (mp, buf);
mp->count++;
if (verbose > 0)
fprintf (stderr, "%s: Driver %s: socket=%d\n", indi_tstamp(NULL),
dp->name, sockfd);
}
int
main (int ac, char *av[])
{
FILE *fp;
/* save our name for usage() */
me = av[0];
/* crack args */
while (--ac && **++av == '-') {
char *s = *av;
while (*++s) {
switch (*s) {
case 'b': /* beep when true */
bflag++;
break;
case 'd':
if (ac < 2) {
fprintf (stderr, "-d requires open fileno\n");
usage();
}
directfd = atoi(*++av);
ac--;
break;
case 'e': /* print each updated expression value */
eflag++;
break;
case 'f': /* print final expression value */
fflag++;
break;
case 'h':
if (directfd >= 0) {
fprintf (stderr, "Can not combine -d and -h\n");
usage();
}
if (ac < 2) {
fprintf (stderr, "-h requires host name\n");
usage();
}
host = *++av;
ac--;
break;
case 'i': /* read expression from stdin */
iflag++;
break;
case 'o': /* print operands as they change */
oflag++;
break;
case 'p':
if (directfd >= 0) {
fprintf (stderr, "Can not combine -d and -p\n");
usage();
}
if (ac < 2) {
fprintf (stderr, "-p requires tcp port number\n");
usage();
}
port = atoi(*++av);
ac--;
break;
case 't':
if (ac < 2) {
fprintf (stderr, "-t requires timeout\n");
usage();
}
timeout = atoi(*++av);
ac--;
break;
case 'v': /* verbose */
verbose++;
break;
case 'w': /* wait for expression to be true */
wflag++;
break;
default:
fprintf (stderr, "Unknown flag: %c\n", *s);
usage();
}
}
}
/* now there are ac args starting with av[0] */
/* compile expression from av[0] or stdin */
if (ac == 0)
compile (NULL);
else if (ac == 1)
compile (av[0]);
else
usage();
/* open connection */
if (directfd >= 0) {
fp = fdopen (directfd, "r+");
setbuf (fp, NULL); /* don't absorb next guy's stuff */
if (!fp) {
fprintf (stderr, "Direct fd %d: %s\n",directfd,strerror(errno));
exit(1);
}
if (verbose)
fprintf (stderr, "Using direct fd %d\n", directfd);
} else {
fp = openINDIServer();
if (verbose)
fprintf (stderr, "Connected to %s on port %d\n", host, port);
}
/* build a parser context for cracking XML responses */
lillp = newLilXML();
/* set up to catch an io timeout function */
signal (SIGALRM, onAlarm);
/* send getProperties */
getProps(fp);
/* initialize all properties */
initProps(fp);
/* evaluate expression, return depending on flags */
return (runEval(fp));
}
