appgroup.c

远程桌面连接工具

    ClientPtr client;
    int attrib_mask;
    AppGroupPtr pAppGrp;
{
    WindowPtr pWin;
    int idepth, ivids, found;
    ScreenPtr pScreen;
    DepthPtr pDepth;
    ColormapPtr pColormap;

    pWin = LookupWindow (pAppGrp->default_root, client);
    /* XXX check that pWin is not NULL */
    pScreen = pWin->drawable.pScreen;
    if (WindowTable[pScreen->myNum]->drawable.id != pAppGrp->default_root)
	return BadWindow;
    pDepth = pScreen->allowedDepths;
    if (pAppGrp->root_visual) {
	found = FALSE;
	for (idepth = 0; idepth < pScreen->numDepths; idepth++, pDepth++) {
	    for (ivids = 0; ivids < pDepth->numVids; ivids++) {
		if (pAppGrp->root_visual == pDepth->vids[ivids]) {
		    found = TRUE;
		    break;
		}
	    }
	}
	if (!found)
	    return BadMatch;
    }
    if (pAppGrp->default_colormap) {

	pColormap = (ColormapPtr)LookupIDByType (pAppGrp->default_colormap, RT_COLORMAP);
	/* XXX check that pColormap is not NULL */
	if (pColormap->pScreen != pScreen)
	    return BadColor;
	if (pColormap->pVisual->vid != (pAppGrp->root_visual ? pAppGrp->root_visual : pScreen->rootVisual))
	    return BadMatch;
    }
    return client->noClientException;
}

/* static */
int ProcXagCreate (client)
    register ClientPtr client;
{
    REQUEST (xXagCreateReq);
    AppGroupPtr pAppGrp;
    int ret;

    REQUEST_AT_LEAST_SIZE (xXagCreateReq);

    LEGAL_NEW_RESOURCE (stuff->app_group, client);
    pAppGrp = CreateAppGroup (client, stuff->app_group, 
		stuff->attrib_mask, (CARD32*) &stuff[1]);
    if (!pAppGrp)
	return BadAlloc;
    ret = AttrValidate (client, stuff->attrib_mask, pAppGrp);
    if (ret != Success) {
	XagAppGroupFree ((pointer)pAppGrp, (XID)0);
	return ret;
    }
    if (pAppGrp->single_screen) {
	CreateConnectionInfo (pAppGrp);
	if (!pAppGrp->ConnectionInfo)
	    return BadAlloc;
    }
    if (!AddResource (stuff->app_group, RT_APPGROUP, (pointer)pAppGrp))
	return BadAlloc;
    if (XagCallbackRefCount++ == 0)
	(void) AddCallback (&ClientStateCallback, XagClientStateChange, NULL);
    return client->noClientException;
}

/* static */
int ProcXagDestroy (client)
    register ClientPtr client;
{
    AppGroupPtr pAppGrp;
    REQUEST (xXagDestroyReq);

    REQUEST_SIZE_MATCH (xXagDestroyReq);
    pAppGrp = (AppGroupPtr)SecurityLookupIDByType (client, 
		(XID)stuff->app_group, RT_APPGROUP, SecurityReadAccess);
    if (!pAppGrp) return XagBadAppGroup;
    FreeResource ((XID)stuff->app_group, RT_NONE);
    if (--XagCallbackRefCount == 0)
	(void) DeleteCallback (&ClientStateCallback, XagClientStateChange, NULL);
    return client->noClientException;
}

static 
int ProcXagGetAttr (client)
    register ClientPtr client;
{
    AppGroupPtr pAppGrp;
    REQUEST (xXagGetAttrReq);
    xXagGetAttrReply rep;
    int n;

    REQUEST_SIZE_MATCH (xXagGetAttrReq);
    pAppGrp = (AppGroupPtr)SecurityLookupIDByType (client, 
		(XID)stuff->app_group, RT_APPGROUP, SecurityReadAccess);
    if (!pAppGrp) return XagBadAppGroup;
    rep.default_root = pAppGrp->default_root;
    rep.root_visual = pAppGrp->root_visual;
    rep.default_colormap = pAppGrp->default_colormap;
    rep.single_screen = pAppGrp->single_screen;
    rep.app_group_leader = (pAppGrp->leader) ? 1 : 0;
    if (client->swapped) {
    	swaps (&rep.sequence_number, n);
    	swapl (&rep.length, n);
    	swapl (&rep.default_root, n);
    	swapl (&rep.root_visual, n);
    	swapl (&rep.default_colormap, n);
    }
    WriteToClient (client, sizeof (xXagGetAttrReply), (char *)&rep);
    return client->noClientException;
}

static 
int ProcXagQuery (client)
    register ClientPtr client;
{
    ClientPtr pClient;
    AppGroupPtr pAppGrp;
    REQUEST (xXagQueryReq);
    int n;

    REQUEST_SIZE_MATCH (xXagQueryReq);
    pClient = LookupClient (stuff->resource, client);
    for (pAppGrp = appGrpList; pAppGrp != NULL; pAppGrp = pAppGrp->next)
	for (n = 0; n < pAppGrp->nclients; n++)
	    if (pAppGrp->clients[n] == pClient) {
		xXagQueryReply rep;

		rep.type = X_Reply;
		rep.length = 0;
		rep.sequence_number = client->sequence;
		rep.app_group = pAppGrp->appgroupId;
		if (client->swapped) {
		    swaps (&rep.sequence_number, n);
		    swapl (&rep.length, n);
		    swapl (&rep.app_group, n);
		}
		WriteToClient (client, sizeof (xXagQueryReply), (char *)&rep);
		return client->noClientException;
	    }

    return BadMatch;
}

static 
int ProcXagCreateAssoc (client)
    register ClientPtr client;
{
    REQUEST (xXagCreateAssocReq);

    REQUEST_SIZE_MATCH (xXagCreateAssocReq);
#ifdef WIN32
    if (stuff->window_type != XagWindowTypeWin32)
#else
    if (stuff->window_type != XagWindowTypeX11)
#endif
	return BadMatch;
#ifdef WIN32 /* and Mac, etc */
    if (!LocalClient (client))
	return BadAccess;
#endif

/* Macintosh, OS/2, and MS-Windows servers have some work to do here */

    return client->noClientException;
}

static 
int ProcXagDestroyAssoc (client)
    register ClientPtr client;
{
    REQUEST (xXagDestroyAssocReq);

    REQUEST_SIZE_MATCH (xXagDestroyAssocReq);
/* Macintosh, OS/2, and MS-Windows servers have some work to do here */
    return client->noClientException;
}

static 
int ProcXagDispatch (client)
    register ClientPtr	client;
{
    REQUEST (xReq);
    switch (stuff->data)
    {
    case X_XagQueryVersion:
	return ProcXagQueryVersion (client);
    case X_XagCreate:
	return ProcXagCreate (client);
    case X_XagDestroy:
	return ProcXagDestroy (client);
    case X_XagGetAttr:
	return ProcXagGetAttr (client);
    case X_XagQuery:
	return ProcXagQuery (client);
    case X_XagCreateAssoc:
	return ProcXagCreateAssoc (client);
    case X_XagDestroyAssoc:
	return ProcXagDestroyAssoc (client);
    default:
	return BadRequest;
    }
}

static 
int SProcXagQueryVersion (client)
    register ClientPtr	client;
{
    register int n;
    REQUEST(xXagQueryVersionReq);
    swaps(&stuff->length, n);
    return ProcXagQueryVersion(client);
}

static 
int SProcXagCreate (client)
    ClientPtr client;
{
    register int n;
    REQUEST (xXagCreateReq);
    swaps (&stuff->length, n);
    REQUEST_AT_LEAST_SIZE (xXagCreateReq);
    swapl (&stuff->app_group, n);
    swapl (&stuff->attrib_mask, n);
    SwapRestL (stuff);
    return ProcXagCreate (client);
}

static 
int SProcXagDestroy (client)
    ClientPtr client;
{
    register int n;
    REQUEST (xXagDestroyReq);
    swaps (&stuff->length, n);
    REQUEST_SIZE_MATCH (xXagDestroyReq);
    swapl (&stuff->app_group, n);
    return ProcXagDestroy (client);
}

static 
int SProcXagGetAttr (client)
    ClientPtr client;
{
    register int n;
    REQUEST (xXagGetAttrReq);
    swaps (&stuff->length, n);
    REQUEST_SIZE_MATCH (xXagGetAttrReq);
    swapl (&stuff->app_group, n);
    return ProcXagGetAttr (client);
}

static 
int SProcXagQuery (client)
    ClientPtr client;
{
    register int n;
    REQUEST (xXagQueryReq);
    swaps (&stuff->length, n);
    REQUEST_SIZE_MATCH (xXagQueryReq);
    swapl (&stuff->resource, n);
    return ProcXagQuery (client);
}

static 
int SProcXagCreateAssoc (client)
    ClientPtr client;
{
    register int n;
    REQUEST (xXagCreateAssocReq);
    swaps (&stuff->length, n);
    REQUEST_SIZE_MATCH (xXagCreateAssocReq);
    swapl (&stuff->window, n);
    swapl (&stuff->window_type, n);
    swaps (&stuff->system_window_len, n);
    return ProcXagCreateAssoc (client);
}

static 
int SProcXagDestroyAssoc (client)
    ClientPtr client;
{
    register int n;
    REQUEST (xXagDestroyAssocReq);
    swaps (&stuff->length, n);
    REQUEST_SIZE_MATCH (xXagDestroyAssocReq);
    swapl (&stuff->window, n);
    return ProcXagDestroyAssoc (client);
}

static 
int SProcXagDispatch (client)
    register ClientPtr	client;
{
    REQUEST(xReq);
    switch (stuff->data)
    {
    case X_XagQueryVersion:
	return SProcXagQueryVersion (client);
    case X_XagCreate:
	return SProcXagCreate (client);
    case X_XagDestroy:
	return SProcXagDestroy (client);
    case X_XagGetAttr:
	return SProcXagGetAttr (client);
    case X_XagQuery:
	return SProcXagQuery (client);
    case X_XagCreateAssoc:
	return SProcXagCreateAssoc (client);
    case X_XagDestroyAssoc:
	return SProcXagDestroyAssoc (client);
    default:
	return BadRequest;
    }
}

Colormap XagDefaultColormap (client)
    ClientPtr client;
{
    return (client->appgroup ? client->appgroup->default_colormap : None);
}

VisualID XagRootVisual (client)
    ClientPtr client;
{
    return (client->appgroup ? client->appgroup->root_visual : 0);
}

ClientPtr XagLeader (client)
    ClientPtr client;
{
    return (client->appgroup ? client->appgroup->leader : NULL);
}

/*
 * Return whether the Map request event should be sent to the appgroup leader.
 * We don't want to send it to the leader when the window is on a different
 * screen, e.g. a print screen.
 */
Bool XagIsControlledRoot (client, pParent)
    ClientPtr client;
    WindowPtr pParent;
{
    if (client->appgroup) {
	if (client->appgroup->single_screen && 
	    pParent->drawable.id == client->appgroup->default_root)
	    return TRUE;
	else if (!pParent->parent)
	    return TRUE;
	else
	    return FALSE;
    }
    return FALSE; 
}

void XagConnectionInfo (client, conn_prefix, conn_info, num_screen)
    ClientPtr client;
    xConnSetupPrefix** conn_prefix;
    char** conn_info;
    int* num_screen;
{
    if (client->appgroup && client->appgroup->ConnectionInfo) {
	*conn_prefix = &client->appgroup->connSetupPrefix;
	*conn_info = client->appgroup->ConnectionInfo;
	*num_screen = ((xConnSetup*)(client->appgroup->ConnectionInfo))->numRoots;
    } 
}

XID XagId (client)
    ClientPtr client;
{
    return (client->appgroup ? client->appgroup->appgroupId : 0);
}

void XagGetDeltaInfo (client, buf)
    ClientPtr client;
    CARD32* buf;
{
    *buf++ = (CARD32) client->appgroup->default_root;
    *buf++ = (CARD32) client->appgroup->root_visual;
    *buf++ = (CARD32) client->appgroup->default_colormap;
    *buf++ = (CARD32) client->appgroup->black_pixel;
    *buf = (CARD32) client->appgroup->white_pixel;
}

void XagCallClientStateChange (client)
    ClientPtr client;
{
    if (appGrpList) {
	NewClientInfoRec clientinfo;

	clientinfo.client = client;
	XagClientStateChange (NULL, NULL, (pointer)&clientinfo);
    }
}