/* Update the client property BLOB handling policy */
void crackBLOBHandling(const char *dev, const char *name, const char *enableBLOB, ClInfo *cp)
{
int i=0;
/* If we have EnableBLOB with property name, we add it to Client device list */
if (name[0])
addClDevice (cp, dev, name, 1);
else
/* Otherwise, we set the whole client blob handling to what's passed (enableBLOB) */
crackBLOB(enableBLOB, &cp->blob);
/* If whole client blob handling policy was updated, we need to pass that also to all children
and if the request was for a specific property, then we apply the policy to it */
for (i = 0; i < cp->nprops; i++)
{
Property *pp = &cp->props[i];
if (!name[0])
crackBLOB(enableBLOB, &pp->blob);
else if (!strcmp (pp->dev, dev) && (!strcmp(pp->name, name)))
{
crackBLOB(enableBLOB, &pp->blob);
return;
}
}
}
/* read more from the given client, send to each appropriate driver when see
* xml closure. also send all newXXX() to all other interested clients.
* shut down client if any trouble.
*/
static void
clientMsg (ClInfo *cp)
{
char buf[BUFSZ];
int i, nr;
/* read client */
nr = read (cp->s, buf, sizeof(buf));
if (nr < 0) {
fprintf (stderr, "Client %d: %s\n", cp->s, strerror(errno));
shutdownClient (cp);
return;
}
if (nr == 0) {
if (verbose)
fprintf (stderr, "Client %d: read EOF\n", cp->s);
shutdownClient (cp);
return;
}
if (verbose > 2)
fprintf (stderr, "Client %d: read %d:\n%.*s", cp->s, nr, nr, buf);
/* process XML, sending when find closure */
for (i = 0; i < nr; i++) {
char err[1024];
XMLEle *root = readXMLEle (cp->lp, buf[i], err);
if (root) {
char *roottag = tagXMLEle(root);
if (verbose > 1)
fprintf (stderr, "Client %d: read %s\n", cp->s,
xmlLog(root));
/* record BLOB message locally, others go to matching drivers */
if (!strcmp (roottag, "enableBLOB")) {
cp->blob = crackBLOB (pcdataXMLEle(root));
delXMLEle (root);
} else {
char *dev = findXMLAttValu (root, "device");
/* snag interested devices */
if (!strcmp (roottag, "getProperties"))
addClDevice (cp, dev);
/* send message to driver(s) responsible for dev */
send2Drivers (root, dev);
/* echo new* commands back to other clients, else done */
if (!strncmp (roottag, "new", 3))
send2Clients (cp, root, dev); /* does delXMLEle */
else
delXMLEle (root);
}
} else if (err[0])
fprintf (stderr, "Client %d: %s\n", cp->s, err);
}
}
/* read more from the given client, send to each appropriate driver when see
* xml closure. also send all newXXX() to all other interested clients.
* return -1 if had to shut down anything, else 0.
*/
int
readFromClient (ClInfo *cp)
{
char buf[MAXRBUF];
int shutany = 0;
ssize_t i, nr;
/* read client */
nr = read (cp->s, buf, sizeof(buf));
if (nr <= 0) {
if (nr < 0)
fprintf (stderr, "%s: Client %d: read: %s\n", indi_tstamp(NULL),
cp->s, strerror(errno));
else if (verbose > 0)
fprintf (stderr, "%s: Client %d: read EOF\n", indi_tstamp(NULL),
cp->s);
shutdownClient (cp);
return (-1);
}
/* process XML, sending when find closure */
for (i = 0; i < nr; i++) {
char err[1024];
XMLEle *root = readXMLEle (cp->lp, buf[i], err);
if (root) {
char *roottag = tagXMLEle(root);
const char *dev = findXMLAttValu (root, "device");
const char *name = findXMLAttValu (root, "name");
int isblob = !strcmp (tagXMLEle(root), "setBLOBVector");
Msg *mp;
if (verbose > 2) {
fprintf (stderr, "%s: Client %d: read ",indi_tstamp(NULL),cp->s);
traceMsg (root);
} else if (verbose > 1) {
fprintf (stderr, "%s: Client %d: read <%s device='%s' name='%s'>\n",
indi_tstamp(NULL), cp->s, tagXMLEle(root),
findXMLAttValu (root, "device"),
findXMLAttValu (root, "name"));
}
/* snag interested properties.
* N.B. don't open to alldevs if seen specific dev already, else
* remote client connections start returning too much.
*/
if (dev[0])
addClDevice (cp, dev, name, isblob);
else if (!strcmp (roottag, "getProperties") && !cp->nprops)
cp->allprops = 1;
/* snag enableBLOB -- send to remote drivers too */
if (!strcmp (roottag, "enableBLOB"))
// crackBLOB (pcdataXMLEle(root), &cp->blob);
crackBLOBHandling (dev, name, pcdataXMLEle(root), cp);
/* build a new message -- set content iff anyone cares */
mp = newMsg();
/* send message to driver(s) responsible for dev */
q2RDrivers (dev, mp, root);
/* echo new* commands back to other clients */
if (!strncmp (roottag, "new", 3)) {
if (q2Clients (cp, isblob, dev, name, mp, root) < 0)
shutany++;
}
/* set message content if anyone cares else forget it */
if (mp->count > 0)
setMsgXMLEle (mp, root);
else
freeMsg (mp);
delXMLEle (root);
} else if (err[0]) {
char *ts = indi_tstamp(NULL);
fprintf (stderr, "%s: Client %d: XML error: %s\n", ts,
cp->s, err);
fprintf (stderr, "%s: Client %d: XML read: %.*s\n", ts,
cp->s, (int)nr, buf);
shutdownClient (cp);
return (-1);
}
}
return (shutany ? -1 : 0);
}
