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updated rbj.js

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Nithish Anand B 2026-01-08 17:36:58 +05:30 committed by GitHub
parent d04dc7f376
commit dc19a62112
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1 changed files with 32 additions and 1 deletions
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33
core/rfb.js
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@ -131,12 +131,15 @@ export default class RFB extends EventTargetMixin {
// Server capabilities
this._rfbVersion = 0;
this._rfbMaxVersion = 3.8;
this._rfbServerVersion = null;
this._rfbTightVNC = false;
this._rfbVeNCryptState = 0;
this._rfbXvpVer = 0;
this._fbWidth = 0;
this._fbHeight = 0;
this._fbPixelFormat = null;
this._forceRawEncoding = false; // Modifications: 003.005 compat path
this._fbName = "";
@ -1506,6 +1509,7 @@ export default class RFB extends EventTargetMixin {
}
const sversion = this._sock.rQshiftStr(12).substr(4, 7);
this._rfbServerVersion = sversion;
Log.Info("Server ProtocolVersion: " + sversion);
let isRepeater = 0;
switch (sversion) {
@ -1516,6 +1520,11 @@ export default class RFB extends EventTargetMixin {
case "003.006": // UltraVNC
this._rfbVersion = 3.3;
break;
case "003.005": // non-standard (seen in impact.pcapng)
Log.Warn("Non-standard server version " + sversion + ", treating as RFB 3.3");
this._rfbVersion = 3.3;
this._forceRawEncoding = true; // Modifications: force raw/16bpp
break;
case "003.007":
this._rfbVersion = 3.7;
break;
@ -2164,6 +2173,18 @@ export default class RFB extends EventTargetMixin {
const greenShift = this._sock.rQshift8();
const blueShift = this._sock.rQshift8();
this._sock.rQskipBytes(3); // padding
this._fbPixelFormat = { // Modifications: store server pixel format
bpp: bpp,
depth: depth,
bigEndian: bigEndian,
trueColor: trueColor,
redMax: redMax,
greenMax: greenMax,
blueMax: blueMax,
redShift: redShift,
greenShift: greenShift,
blueShift: blueShift,
};
// NB(directxman12): we don't want to call any callbacks or print messages until
// *after* we're past the point where we could backtrack
@ -2226,6 +2247,11 @@ export default class RFB extends EventTargetMixin {
Log.Warn("Intel AMT KVM only supports 8/16 bit depths. Using low color mode.");
this._fbDepth = 8;
}
if (this._forceRawEncoding && this._fbPixelFormat &&
this._fbPixelFormat.depth === 16 && this._fbPixelFormat.trueColor) {
Log.Warn("Forcing 16bpp pixel format due to non-standard RFB version");
this._fbDepth = 16;
}
RFB.messages.pixelFormat(this._sock, this._fbDepth, true);
this._sendEncodings();
@ -2240,6 +2266,11 @@ export default class RFB extends EventTargetMixin {
// In preference order
encs.push(encodings.encodingCopyRect);
if (this._forceRawEncoding) { // Modifications: raw-only encodings
encs.push(encodings.encodingRaw);
RFB.messages.clientEncodings(this._sock, encs);
return;
}
// Only supported with full depth support
if (this._fbDepth == 24) {
if (supportsWebCodecsH264Decode) {
@ -3000,7 +3031,7 @@ export default class RFB extends EventTargetMixin {
return decoder.decodeRect(this._FBU.x, this._FBU.y,
this._FBU.width, this._FBU.height,
this._sock, this._display,
this._fbDepth);
this._fbDepth, this._fbPixelFormat); // Modifications
} catch (err) {
this._fail("Error decoding rect: " + err);
return false;