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screen: reject unsupported security types with clear error instead of mishandling

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iris 2026-05-20 17:31:41 +02:00
parent 86e4f41203
commit 76061eb3ae
1 changed files with 9 additions and 3 deletions
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12
hive-ag3nt/assets/screen.html
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@ -221,12 +221,18 @@ canvas { display: block; cursor: default; }
if (types.indexOf(1) !== -1) prefer = 1; // plain None if (types.indexOf(1) !== -1) prefer = 1; // plain None
else if (types.indexOf(19) !== -1) prefer = 19; // VeNCrypt else if (types.indexOf(19) !== -1) prefer = 19; // VeNCrypt
else prefer = types[0]; else prefer = types[0];
// Only handle known-safe types; reject everything else.
if (prefer !== 1 && prefer !== 19) {
dbg('no supported security type in [' + Array.from(types).join(', ') + '] — need 1 (None) or 19 (VeNCrypt)', 'err');
setStatus('unsupported security types: [' + Array.from(types).join(', ') + ']', 'error');
ws.close();
return false;
}
dbg('→ choosing security type ' + prefer + dbg('→ choosing security type ' + prefer +
(prefer === 1 ? ' (None)' : prefer === 19 ? ' (VeNCrypt)' : prefer === 2 ? ' (VncAuth)' : '')); (prefer === 1 ? ' (None)' : ' (VeNCrypt)'));
send(new Uint8Array([prefer])); send(new Uint8Array([prefer]));
if (prefer === 1) state = 'security-result'; if (prefer === 1) state = 'security-result';
else if (prefer === 19) state = 'vencrypt-version'; else state = 'vencrypt-version';
else state = 'security-vnc-challenge';
return true; return true;
} }
case 'security-vnc-challenge': { case 'security-vnc-challenge': {