/*
* XextAddDisplay - add a display to this extension
*/
XExtDisplayInfo *XextAddDisplay (
XExtensionInfo *extinfo,
Display *dpy,
_Xconst char *ext_name,
XExtensionHooks *hooks,
int nevents,
XPointer data)
{
XExtDisplayInfo *dpyinfo;
dpyinfo = (XExtDisplayInfo *) Xmalloc (sizeof (XExtDisplayInfo));
if (!dpyinfo) return NULL;
dpyinfo->display = dpy;
dpyinfo->data = data;
dpyinfo->codes = XInitExtension (dpy, ext_name);
/*
* if the server has the extension, then we can initialize the
* appropriate function vectors
*/
if (dpyinfo->codes) {
int i, j;
for (i = 0, j = dpyinfo->codes->first_event; i < nevents; i++, j++) {
XESetWireToEvent (dpy, j, hooks->wire_to_event);
XESetEventToWire (dpy, j, hooks->event_to_wire);
}
/* register extension for XGE */
if (strcmp(ext_name, GE_NAME))
xgeExtRegister(dpy, dpyinfo->codes->major_opcode, hooks);
if (hooks->create_gc)
XESetCreateGC (dpy, dpyinfo->codes->extension, hooks->create_gc);
if (hooks->copy_gc)
XESetCopyGC (dpy, dpyinfo->codes->extension, hooks->copy_gc);
if (hooks->flush_gc)
XESetFlushGC (dpy, dpyinfo->codes->extension, hooks->flush_gc);
if (hooks->free_gc)
XESetFreeGC (dpy, dpyinfo->codes->extension, hooks->free_gc);
if (hooks->create_font)
XESetCreateFont (dpy, dpyinfo->codes->extension, hooks->create_font);
if (hooks->free_font)
XESetFreeFont (dpy, dpyinfo->codes->extension, hooks->free_font);
if (hooks->close_display)
XESetCloseDisplay (dpy, dpyinfo->codes->extension,
hooks->close_display);
if (hooks->error)
XESetError (dpy, dpyinfo->codes->extension, hooks->error);
if (hooks->error_string)
XESetErrorString (dpy, dpyinfo->codes->extension,
hooks->error_string);
} else if (hooks->close_display) {
/* The server doesn't have this extension.
* Use a private Xlib-internal extension to hang the close_display
* hook on so that the "cache" (extinfo->cur) is properly cleaned.
* (XBUG 7955)
*/
XExtCodes *codes = XAddExtension(dpy);
if (!codes) {
XFree(dpyinfo);
return NULL;
}
XESetCloseDisplay (dpy, codes->extension, hooks->close_display);
}
/*
* now, chain it onto the list
*/
_XLockMutex(_Xglobal_lock);
dpyinfo->next = extinfo->head;
extinfo->head = dpyinfo;
extinfo->cur = dpyinfo;
extinfo->ndisplays++;
_XUnlockMutex(_Xglobal_lock);
return dpyinfo;
}
int
CSDPSInit(
Display *dpy,
int *numberType, /* RETURN */
char **floatingName) /* RETURN */
{
register Display *agent;
register xCAPConnReplyPrefix *p;
register char *c;
DPSCAPData my;
xCAPConnSetupReq setup;
union {
xCAPConnSuccess good;
xCAPConnFailed bad;
} reply;
XExtData *extData;
XExtCodes *codes;
int indian;
int rest;
Window clientWindow;
char fullDisplayName[MAXHOSTNAMELEN+10];
if (gCSDPS == NULL)
DPSCAPStartUp();
/* To fix dps-nx #68, Motif too slow on HP */
if ((c = getenv("DPSNXGCMODE")) != 0)
{
gNXSyncGCMode = atoi(c);
if (gNXSyncGCMode < DPSNXSYNCGCMODE_FLUSH
|| gNXSyncGCMode > DPSNXSYNCGCMODE_DELAYED)
gNXSyncGCMode = DPSNXSYNCGCMODE_DEFAULT;
}
/* We may have already called this routine via XDPSExtensionPresent,
so don't do it again! */
if ((codes = XDPSLGetCodes(dpy))
&& (agent = XDPSLGetShunt(dpy))
&& agent != dpy
&& codes->major_opcode == DPSXOPCODEBASE)
return(DPSCAPSUCCESS);
/* Try to create a window for ClientMessage communication */
clientWindow = XCreateSimpleWindow(
dpy,
DefaultRootWindow(dpy),
0, 0,
1, 1,
0,
BlackPixel(dpy, DefaultScreen(dpy)),
WhitePixel(dpy, DefaultScreen(dpy)));
if (clientWindow == None)
return(DPSCAPFAILED);
/* Try to open a connection to an agent */
if ((extData = DPSCAPOpenAgent(dpy, fullDisplayName)) == NULL)
{
XDestroyWindow(dpy, clientWindow);
return(DPSCAPFAILED);
}
/* DPSCAPOpenAgent only partially fills in extData, so finish it */
codes = XAddExtension(dpy);
codes->major_opcode = DPSXOPCODEBASE;
codes->first_event = 0; /* REQUIRED */
codes->first_error = FirstExtensionError;
extData->number = codes->extension;
extData->free_private = DPSCAPDestroy;
my = (DPSCAPData) extData->private_data;
my->codes = codes;
agent = my->agent;
/* +++ Is this all we have to do here? */
/* Send opening handshake */
indian = 1;
if (*(char *) &indian)
setup.byteorder = 'l';
else
setup.byteorder = 'B';
setup.dpscapVersion = DPSCAPPROTOVERSION;
setup.flags = DPSCAPNONEFLAG;
setup.libraryversion = DPSPROTOCOLVERSION;
setup.authProtoNameLength = 0;
setup.authProtoDataLength = 0;
setup.displayStringLength = strlen(fullDisplayName);
setup.nodeStringLength = 0;
setup.transportStringLength = 0;
setup.display = 0;
setup.screen = 0;
setup.reserved = 0;
setup.clientWindow = clientWindow;
#ifndef DPSLNKL
DPSCAPWrite(agent, (char *)&setup, sizeof(xCAPConnSetupReq), dpscap_nopad,dpscap_insert);
DPSCAPWrite(agent, fullDisplayName, setup.displayStringLength, dpscap_pad, dpscap_append);
N_XFlush(agent);
#else /* DPSLNKL */
if (CSDPSConfirmDisplay(agent, dpy, &setup, &reply, fullDisplayName) == 1)
{
p = (xCAPConnReplyPrefix *)&reply.good;
goto skip_read;
}
/* Read normal reply */
#endif /* DPSLNKL */
/* Read common reply prefix */
p = (xCAPConnReplyPrefix *)&reply.good;
N_XRead(agent, (char *)p, (long)sizeof(xCAPConnReplyPrefix));
#ifdef DPSLNKL
skip_read:
#endif
if (!p->success)
{
char mbuf[512];
/* read the rest */
c = (char *)&reply.bad.serverVersion;
N_XRead(agent, c, sz_xCAPConnFailed - sz_xCAPConnReplyPrefix);
sprintf(mbuf, "DPS NX: connection to \"%s\" refused by agent.", DisplayString(agent));
DPSWarnProc(NULL, mbuf);
c = (char *)Xmalloc(reply.bad.reasonLength);
if (!c) return(DPSCAPFAILED);
N_XReadPad(agent, c, (long)reply.bad.reasonLength);
if (!reply.bad.reasonLength)
sprintf(mbuf, "DPS NX: (no reason given)\n");
else
{
strcpy(mbuf, "DPS NX: ");
strncat(mbuf, c, reply.bad.reasonLength);
mbuf[reply.bad.reasonLength+7] = '\0';
}
DPSWarnProc(NULL, mbuf);
Xfree(c);
DPSCAPDestroy(extData);
Xfree(extData);
XDestroyWindow(dpy, clientWindow);
return(DPSCAPFAILED);
}
/* read the rest of the fixed length reply */
c = (char *)&reply.good.serverVersion;
rest = sizeof(xCAPConnSuccess) - sizeof(xCAPConnReplyPrefix);
N_XRead(agent, c, rest);
/* verify */
if (reply.good.serverVersion < DPSPROTOCOLVERSION)
{
/* Fine, we downgrade the client */
char qbuf[256];
sprintf(qbuf, "NX: server version %ld older than expected %d, client will downgrade", (long)reply.good.serverVersion, DPSPROTOCOLVERSION);
DPSWarnProc(NULL, qbuf);
}
my->dpscapVersion = reply.good.dpscapVersion;
if (my->dpscapVersion < DPSCAPPROTOVERSION)
{
/* Fine, we downgrade the client */
char kbuf[256];
sprintf(kbuf, "NX: agent version %d older than expected %d, client will downgrade", my->dpscapVersion, DPSCAPPROTOVERSION);
DPSWarnProc(NULL, kbuf);
#ifdef XXX
/* Saving this code as a reminder about what needs to be
cleaned up if we exit here */
DPSCAPDestroy(extData);
Xfree(extData);
XDestroyWindow(clientWindow);
return(DPSCAPFAILED);
#endif
}
if (numberType)
*numberType = reply.good.preferredNumberFormat;
/* read additional data */
c = (char *)Xmalloc(reply.good.floatingNameLength + 1);
N_XReadPad(agent, c, reply.good.floatingNameLength);
c[reply.good.floatingNameLength] = 0;
if (floatingName)
*floatingName = c;
else
Xfree(c);
/* set library extension data */
XDPSLSetVersion(agent, reply.good.serverVersion);
XDPSLSetVersion(dpy, reply.good.serverVersion);
XDPSLSetShunt(dpy, agent);
XDPSLSetCodes(dpy, codes);
if (XDPSLGetSyncMask(dpy) == DPSCAP_SYNCMASK_NONE)
XDPSLSetSyncMask(dpy, DPSCAP_SYNCMASK_DFLT);
my->agentWindow = reply.good.agentWindow;
XDPSLSetGCFlushMode(dpy, XDPSNX_GC_UPDATES_SLOW); /* default */
/* Hook my extension data on the dpy */
my->extData = extData;
XAddToExtensionList(CSDPSHeadOfDpyExt(dpy), extData);
(void) XESetCloseDisplay(dpy, codes->extension, DPSCAPCloseDisplayProc);
(void) XESetCopyGC(dpy, codes->extension, DPSCAPCopyGCProc);
(void) XESetFreeGC(dpy, codes->extension, DPSCAPFreeGCProc);
(void) XESetFlushGC(dpy, codes->extension, DPSCAPFlushGCProc);
XDPSLSetClientMessageHandler(dpy);
/* Chain my data on global list */
my->next = gCSDPS->head;
gCSDPS->head = my;
#ifdef MAHALO
/* Set function that is called after every Xlib protocol proc */
XDPSLSetAfterProc(dpy);
/* All CSDPS protocol is auto-flushed */
(void) XSetAfterFunction(agent, DPSCAPFlushAfterProc);
#endif /* MAHALO */
/* set agent arguments, if needed */
/* must follow setting of ShuntMap at least, so safest to
do here when everything has been setup */
XDPSLUpdateAgentArgs(dpy);
return(DPSCAPSUCCESS);
}
