WIP, firefox support

app/ui.js

@@ -1134,32 +1134,15 @@ const UI = {
             return;
         }
         if (UI.rfb && UI.rfb.clipboardUp && UI.rfb.clipboardSeamless) {
+
+            if (UI.rfb.clipboardBinary) {
                 navigator.clipboard.read().then((data) => {
                     UI.rfb.clipboardPasteDataFrom(data);
                     UI.needToCheckClipboardChange = false;
+                }, (err) => {
+                    console.log("No data in clipboard");
                 }); 
-
-            /*UI.readClipboard(function (text) {
-                console.log("clipboard read");
-                var maximumBufferSize = 10000;
-                var clipVal = document.getElementById('noVNC_clipboard_text').value;
-
-                if (clipVal != text) {
-                    console.log("clipboard sent")
-                    document.getElementById('noVNC_clipboard_text').value = text; // The websocket has a maximum buffer array size
-
-                    if (text.length > maximumBufferSize) {
-                        UI.popupMessage("Clipboard contents too large. Data truncated", 2000);
-                        UI.rfb.clipboardPasteFrom(text.slice(0, maximumBufferSize));
-                    } else {
-                        //UI.popupMessage("Copied from Local Clipboard");
-                        UI.rfb.clipboardPasteFrom(text);
             }
-                } // Reset flag to prevent checking too often
-
-
-                UI.needToCheckClipboardChange = false;
-            }); */
         }
     },
 
@@ -1300,15 +1283,13 @@ const UI = {
         UI.rfb.antiAliasing = UI.getSetting('anti_aliasing');
         UI.rfb.clipboardUp = UI.getSetting('clipboard_up');
         UI.rfb.clipboardDown = UI.getSetting('clipboard_down');
-        UI.rfb.clipboardBinary = supportsBinaryClipboard();
         UI.rfb.clipboardSeamless = UI.getSetting('clipboard_seamless');
-        if (UI.rfb.clipboardSeamless) {
+        UI.rfb.clipboardBinary = supportsBinaryClipboard() && UI.rfb.clipboardSeamless;
+
+        //Only explicitly request permission to clipboard on browsers that support binary clipboard access
+        if (supportsBinaryClipboard()) {
             // explicitly request permission to the clipboard
-            if (UI.rfb.clipboardBinary) {
             navigator.permissions.query({ name: "clipboard-read" }).then((result) => { console.log('binary clipboard enabled') });
-            } else {
-                navigator.permissions.query({ name: "clipboardRead" }).then((result) => { console.log('binary clipboard enabled') }); 
-            }
         }
         // KASM-960 workaround, disable seamless on Safari
         if (/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) 

core/rfb.js

@@ -783,21 +783,28 @@ export default class RFB extends EventTargetMixin {
 
     clipboardPasteFrom(text) {
         if (this._rfbConnectionState !== 'connected' || this._viewOnly) { return; }
-        this.sentEventsCounter+=1;
+        if (!(typeof text === 'string' && text.length > 0)) { return; }
-        if (this._clipboardServerCapabilitiesFormats[extendedClipboardFormatText] &&
+
-            this._clipboardServerCapabilitiesActions[extendedClipboardActionNotify]) {
+        this.sentEventsCounter+=1;
 
-            this._clipboardText = text;
-            RFB.messages.extendedClipboardNotify(this._sock, [extendedClipboardFormatText]);
-        } else {
         let data = new Uint8Array(text.length);
         for (let i = 0; i < text.length; i++) {
-                // FIXME: text can have values outside of Latin1/Uint8
             data[i] = text.charCodeAt(i);
         }
 
-            RFB.messages.clientCutText(this._sock, data);
+        let h = hashUInt8Array(data);
+        if (h === this._clipHash) {
+            console.log('No clipboard changes');
+            return;
+        } else {
+            this._clipHash = h;
         }
+
+        let dataset = [];
+        let mimes = [ 'text/plain' ];
+        dataset.push(data);
+
+        RFB.messages.sendBinaryClipboard(this._sock, dataset, mimes);
     }
 
     async clipboardPasteDataFrom(clipdata) {
@@ -816,6 +823,9 @@ export default class RFB extends EventTargetMixin {
                     case 'text/plain':
                     case 'text/html':
                         let blob = await clipdata[i].getType(mime);
+                        if (!blob) {
+                            continue;
+                        }
                         let buff = await blob.arrayBuffer();
                         let data = new Uint8Array(buff);
 
@@ -2465,31 +2475,48 @@ export default class RFB extends EventTargetMixin {
         Log.Debug("HandleBinaryClipboard");
 
         let num = this._sock.rQshift8(); // how many different mime types
-        let blobs = [];
-        let clipdata = [];
         let mimes = [];
+        let clipItemData = {};
         console.log('Clipboard items recieved.');
 
         for (let i = 0; i < num; i++) {
             let mimelen = this._sock.rQshift8();
-            const mime = this._sock.rQshiftStr(mimelen);
+            let mime = this._sock.rQshiftStr(mimelen);
-
             let len = this._sock.rQshift32();
-
+            let data = this._sock.rQshiftBytes(len);
-            const data = this._sock.rQshiftBytes(len);
             
             switch(mime) {
                 case "image/png":
                 case "text/html":
                 case "text/plain":
-                    if (mimes.includes(mime)){
+                    //if (mimes.includes(mime)){
+                    //    continue;
+                    //}
+                    mimes.push(mime);
+
+                    if (!this.clipboardBinary) {
+                        if (mime == "text/plain") {
+
+                            let textdata = new TextDecoder().decode(data);
+
+                            if ((textdata.length > 0) && "\0" === textdata.charAt(textdata.length - 1)) {
+                                textdata = textdata.slice(0, -1);
+                            }
+
+                            console.log('Clipboard item raw: ' + data);
+                            console.log('Clipboard item decoded: ' + textdata);
+                            this.dispatchEvent(new CustomEvent(
+                                "clipboard",
+                                { detail: { text: textdata } })
+                            );
                             continue;
                         }
-                    mimes.push(mime);
+                        continue;
+                    }
+                    
                     console.log("Mime " + mime + ", len ", len);
                     console.log(data);
-                    let blob = new Blob([data], { type: mime });
+                    clipItemData[mime] = new Blob([data], { type: mime });
-                    clipdata.push(new ClipboardItem({ [mime]: blob }));
                     break;
                 default:
                     console.log('Mime type skipped: ' + mime);
@@ -2497,14 +2524,16 @@ export default class RFB extends EventTargetMixin {
             }
         }
 
-        if (clipdata.length > 0) {
+        if (Object.keys(clipItemData).length > 0) {
+            if (this.clipboardBinary) {
                 this._clipHash = 0;
-            navigator.clipboard.write(clipdata).then(
+                navigator.clipboard.write([new ClipboardItem(clipItemData)]).then(
                     function() {},
                     function(err) { 
                         console.log("Error writing to client clipboard: " + err); 
                     });
             }
+        }
 
         return true;
     }