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matt
319
unix/vncconfig/vncExt.c
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319
unix/vncconfig/vncExt.c
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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#define NEED_REPLIES
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#include <X11/Xlib.h>
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#include <X11/Xlibint.h>
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#define _VNCEXT_PROTO_
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#include "vncExt.h"
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static Bool XVncExtQueryConnectNotifyWireToEvent(Display* dpy, XEvent* e,
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xEvent* w);
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static Bool extensionInited = False;
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static XExtCodes* codes = 0;
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static Bool checkExtension(Display* dpy)
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{
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if (!extensionInited) {
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extensionInited = True;
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codes = XInitExtension(dpy, VNCEXTNAME);
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if (!codes) return False;
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XESetWireToEvent(dpy, codes->first_event + VncExtQueryConnectNotify,
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XVncExtQueryConnectNotifyWireToEvent);
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}
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return codes != 0;
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}
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Bool XVncExtQueryExtension(Display* dpy, int* event_basep, int* error_basep)
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{
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if (!checkExtension(dpy)) return False;
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*event_basep = codes->first_event;
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*error_basep = codes->first_error;
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return True;
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}
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Bool XVncExtSetParam(Display* dpy, const char* param)
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{
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xVncExtSetParamReq* req;
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xVncExtSetParamReply rep;
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int paramLen = strlen(param);
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if (paramLen > 255) return False;
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if (!checkExtension(dpy)) return False;
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LockDisplay(dpy);
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GetReq(VncExtSetParam, req);
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req->reqType = codes->major_opcode;
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req->vncExtReqType = X_VncExtSetParam;
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req->length += (paramLen + 3) >> 2;
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req->paramLen = paramLen;
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Data(dpy, param, paramLen);
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if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
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UnlockDisplay(dpy);
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SyncHandle();
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return False;
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}
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UnlockDisplay(dpy);
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SyncHandle();
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return rep.success;
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}
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Bool XVncExtGetParam(Display* dpy, const char* param, char** value, int* len)
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{
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xVncExtGetParamReq* req;
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xVncExtGetParamReply rep;
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int paramLen = strlen(param);
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*value = 0;
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*len = 0;
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if (paramLen > 255) return False;
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if (!checkExtension(dpy)) return False;
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LockDisplay(dpy);
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GetReq(VncExtGetParam, req);
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req->reqType = codes->major_opcode;
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req->vncExtReqType = X_VncExtGetParam;
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req->length += (paramLen + 3) >> 2;
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req->paramLen = paramLen;
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Data(dpy, param, paramLen);
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if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
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UnlockDisplay(dpy);
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SyncHandle();
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return False;
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}
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if (rep.success) {
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*len = rep.valueLen;
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*value = (char*) Xmalloc (*len+1);
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if (!*value) {
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_XEatData(dpy, (*len+1)&~1);
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return False;
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}
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_XReadPad(dpy, *value, *len);
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(*value)[*len] = 0;
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}
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UnlockDisplay(dpy);
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SyncHandle();
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return rep.success;
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}
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char* XVncExtGetParamDesc(Display* dpy, const char* param)
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{
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xVncExtGetParamDescReq* req;
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xVncExtGetParamDescReply rep;
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char* desc = 0;
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int paramLen = strlen(param);
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if (paramLen > 255) return False;
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if (!checkExtension(dpy)) return False;
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LockDisplay(dpy);
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GetReq(VncExtGetParamDesc, req);
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req->reqType = codes->major_opcode;
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req->vncExtReqType = X_VncExtGetParamDesc;
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req->length += (paramLen + 3) >> 2;
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req->paramLen = paramLen;
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Data(dpy, param, paramLen);
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if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
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UnlockDisplay(dpy);
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SyncHandle();
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return False;
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}
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if (rep.success) {
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desc = (char*)Xmalloc(rep.descLen+1);
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if (!desc) {
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_XEatData(dpy, (rep.descLen+1)&~1);
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return False;
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}
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_XReadPad(dpy, desc, rep.descLen);
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desc[rep.descLen] = 0;
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}
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UnlockDisplay(dpy);
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SyncHandle();
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return desc;
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}
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char** XVncExtListParams(Display* dpy, int* nParams)
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{
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xVncExtListParamsReq* req;
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xVncExtListParamsReply rep;
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char** list = 0;
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char* ch;
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int rlen, paramLen, i;
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if (!checkExtension(dpy)) return False;
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LockDisplay(dpy);
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GetReq(VncExtListParams, req);
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req->reqType = codes->major_opcode;
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req->vncExtReqType = X_VncExtListParams;
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if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
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UnlockDisplay(dpy);
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SyncHandle();
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return False;
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}
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UnlockDisplay(dpy);
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SyncHandle();
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if (rep.nParams) {
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list = (char**)Xmalloc(rep.nParams * sizeof(char*));
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rlen = rep.length << 2;
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ch = (char*)Xmalloc(rlen + 1);
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if (!list || !ch) {
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if (list) Xfree((char*)list);
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if (ch) Xfree(ch);
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_XEatData(dpy, rlen);
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UnlockDisplay(dpy);
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SyncHandle();
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return 0;
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}
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_XReadPad(dpy, ch, rlen);
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paramLen = *ch++;
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for (i = 0; i < rep.nParams; i++) {
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list[i] = ch;
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ch += paramLen;
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paramLen = *ch;
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*ch++ = 0;
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}
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}
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*nParams = rep.nParams;
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UnlockDisplay(dpy);
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SyncHandle();
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return list;
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}
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void XVncExtFreeParamList(char** list)
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{
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if (list) {
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Xfree(list[0]-1);
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Xfree((char*)list);
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}
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}
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Bool XVncExtSelectInput(Display* dpy, Window w, int mask)
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{
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xVncExtSelectInputReq* req;
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if (!checkExtension(dpy)) return False;
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LockDisplay(dpy);
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GetReq(VncExtSelectInput, req);
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req->reqType = codes->major_opcode;
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req->vncExtReqType = X_VncExtSelectInput;
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req->window = w;
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req->mask = mask;
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UnlockDisplay(dpy);
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SyncHandle();
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return True;
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}
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Bool XVncExtConnect(Display* dpy, const char* hostAndPort)
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{
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xVncExtConnectReq* req;
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xVncExtConnectReply rep;
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int strLen = strlen(hostAndPort);
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if (strLen > 255) return False;
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if (!checkExtension(dpy)) return False;
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LockDisplay(dpy);
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GetReq(VncExtConnect, req);
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req->reqType = codes->major_opcode;
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req->vncExtReqType = X_VncExtConnect;
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req->length += (strLen + 3) >> 2;
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req->strLen = strLen;
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Data(dpy, hostAndPort, strLen);
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if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
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UnlockDisplay(dpy);
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SyncHandle();
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return False;
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}
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UnlockDisplay(dpy);
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SyncHandle();
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return rep.success;
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}
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Bool XVncExtGetQueryConnect(Display* dpy, char** addr, char** user,
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int* timeout, void** opaqueId)
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{
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xVncExtGetQueryConnectReq* req;
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xVncExtGetQueryConnectReply rep;
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if (!checkExtension(dpy)) return False;
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LockDisplay(dpy);
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GetReq(VncExtGetQueryConnect, req);
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req->reqType = codes->major_opcode;
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req->vncExtReqType = X_VncExtGetQueryConnect;
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if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
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UnlockDisplay(dpy);
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SyncHandle();
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return False;
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}
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UnlockDisplay(dpy);
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SyncHandle();
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*addr = Xmalloc(rep.addrLen+1);
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*user = Xmalloc(rep.userLen+1);
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if (!*addr || !*user) {
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Xfree(*addr);
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Xfree(*user);
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_XEatData(dpy, ((rep.addrLen+1)&~1) + ((rep.userLen+1)&~1));
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return False;
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}
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_XReadPad(dpy, *addr, rep.addrLen);
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(*addr)[rep.addrLen] = 0;
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_XReadPad(dpy, *user, rep.userLen);
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(*user)[rep.userLen] = 0;
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*timeout = rep.timeout;
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*opaqueId = (void*)(intptr_t)rep.opaqueId;
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return True;
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}
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Bool XVncExtApproveConnect(Display* dpy, void* opaqueId, int approve)
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{
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xVncExtApproveConnectReq* req;
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if (!checkExtension(dpy)) return False;
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LockDisplay(dpy);
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GetReq(VncExtApproveConnect, req);
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req->reqType = codes->major_opcode;
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req->vncExtReqType = X_VncExtApproveConnect;
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req->approve = approve;
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req->opaqueId = (CARD32)(intptr_t)opaqueId;
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UnlockDisplay(dpy);
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SyncHandle();
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return True;
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}
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static Bool XVncExtQueryConnectNotifyWireToEvent(Display* dpy, XEvent* e,
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xEvent* w)
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{
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XVncExtQueryConnectEvent* ev = (XVncExtQueryConnectEvent*)e;
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xVncExtQueryConnectNotifyEvent* wire
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= (xVncExtQueryConnectNotifyEvent*)w;
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ev->type = wire->type & 0x7f;
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ev->serial = _XSetLastRequestRead(dpy,(xGenericReply*)wire);
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ev->send_event = (wire->type & 0x80) != 0;
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ev->display = dpy;
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ev->window = wire->window;
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return True;
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}
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