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Build in the behavior to ignore decodeUTF8 errors

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Makes the code clearer and more explicit in intent.
This commit is contained in:
Samuel Mannehed 2019-12-23 10:25:02 +01:00 committed by Lauri Kasanen
parent c3ef9ff557
commit ce94d92e18
2 changed files with 15 additions and 12 deletions
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12
kasmweb/core/rfb.js
View File

@ -1288,11 +1288,7 @@ export default class RFB extends EventTargetMixin {
const name_length = this._sock.rQshift32();
if (this._sock.rQwait('server init name', name_length, 24)) { return false; }
let name = this._sock.rQshiftStr(name_length);
try {
name = decodeUTF8(name);
} catch (e) {
// bypass no-empty
}
name = decodeUTF8(name, true);
if (this._rfb_tightvnc) {
if (this._sock.rQwait('TightVNC extended server init header', 8, 24 + name_length)) { return false; }
@ -1912,11 +1908,7 @@ export default class RFB extends EventTargetMixin {
}
let name = this._sock.rQshiftStr(length);
try {
name = decodeUTF8(name);
} catch (e) {
// bypass no-empty
}
name = decodeUTF8(name, true);
this._setDesktopName(name);

13
kasmweb/core/util/strings.js
View File

@ -7,8 +7,19 @@
*/
// Decode from UTF-8
export function decodeUTF8(utf8string) {
export function decodeUTF8(utf8string, allowLatin1=false) {
try {
return decodeURIComponent(escape(utf8string));
} catch (e) {
if (e instanceof URIError) {
if (allowLatin1) {
// If we allow Latin1 we can ignore any decoding fails
// and in these cases return the original string
return utf8string;
}
}
throw e;
}
}
// Encode to UTF-8