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Add versioning to file transfer protocol.
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parent
1745b6294e
commit
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1 changed files with 67 additions and 18 deletions
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@ -1611,6 +1611,16 @@ function TransferredFile(sc, userid, id, up, username, name, mimetype, size) {
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* @type {string}
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*/
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this.id = id;
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/**
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* The negotiated file-transfer protocol version.
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*
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* This is the version of the file-transfer protocol, and is not
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* necessarily equal to the version of the Galene protocol used by the
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* server connection.
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*
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* @type {string}
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*/
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this.version = null;
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/**
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* True if this is an upload.
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*
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@ -1797,6 +1807,26 @@ TransferredFile.prototype.event = function(state, data) {
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f.onevent.call(f, state, data);
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}
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/**
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* Send a cancel message for a file transfer.
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*
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* Don't call this, call TransferredFile.cancel instead.
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*
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* @param {ServerConnection} sc
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* @param {string} userid
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* @param {string} id
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* @param {string|Error} [message]
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*/
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function sendFileCancel(sc, userid, id, message) {
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let m = {
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type: 'cancel',
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id: id,
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};
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if(message)
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m.message = message.toString();
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sc.userMessage('filetransfer', userid, m);
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}
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/**
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* Cancel a file transfer.
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@ -1804,23 +1834,16 @@ TransferredFile.prototype.event = function(state, data) {
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* Depending on the state, this will either forcibly close the connection,
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* send a handshake, or do nothing. It will set the state to cancelled.
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*
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* @param {string|Error} [data]
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* @param {string|Error} [message]
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*/
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TransferredFile.prototype.cancel = function(data) {
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TransferredFile.prototype.cancel = function(message) {
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let f = this;
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if(f.state === 'closed')
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return;
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if(f.state !== '' && f.state !== 'done' && f.state !== 'cancelled') {
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let m = {
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type: 'cancel',
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id: f.id,
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};
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if(data)
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m.message = data.toString();
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f.sc.userMessage('filetransfer', f.userid, m);
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}
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if(f.state !== '' && f.state !== 'done' && f.state !== 'cancelled')
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sendFileCancel(f.sc, f.userid, f.id, message);
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if(f.state !== 'done' && f.state !== 'cancelled')
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f.event('cancelled', data);
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f.event('cancelled', message);
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f.close();
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}
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@ -1878,6 +1901,7 @@ ServerConnection.prototype.sendFile = function(id, file) {
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sc.transferredFiles[f.fullid()] = f;
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sc.userMessage('filetransfer', id, {
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type: 'invite',
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version: ["1"],
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id: fileid,
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name: f.name,
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size: f.size,
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@ -1944,6 +1968,7 @@ TransferredFile.prototype.receive = async function() {
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await pc.setLocalDescription(offer);
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f.sc.userMessage('filetransfer', f.userid, {
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type: 'offer',
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version: [f.version],
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id: f.id,
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sdp: pc.localDescription.sdp,
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});
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@ -2163,10 +2188,21 @@ ServerConnection.prototype.fileTransfer = function(id, username, message) {
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let sc = this;
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switch(message.type) {
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case 'invite': {
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/** @type {string} */
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let version;
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if((message.version instanceof Array) && message.version.includes('1')) {
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version = '1';
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} else {
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sendFileCancel(sc, id, message.id,
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`Unknown protocol version ${message.version}; ` +
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'perhaps you need to upgrade your client ?');
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return;
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}
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let f = new TransferredFile(
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sc, id, message.id, false, username,
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message.name, message.mimetype, message.size,
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);
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f.version = version;
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f.state = 'inviting';
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try {
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@ -2194,17 +2230,30 @@ ServerConnection.prototype.fileTransfer = function(id, username, message) {
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sc.transferredFiles[fid] = f;
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break;
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}
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case 'offer':
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case 'offer': {
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let f = sc.getTransferredFile(id, message.id);
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if(!f) {
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console.error(`Unexpected ${message.type} for file transfer`);
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return;
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}
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if((message.version instanceof Array) && message.version.includes('1')) {
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f.version = '1';
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} else {
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f.cancel(`Unknown protocol version ${message.version}; ` +
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'perhaps you need to upgrade your client ?'
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);
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return;
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}
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f.answer(message.sdp).catch(e => f.cancel(e));
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break;
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}
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case 'answer': {
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let f = sc.getTransferredFile(id, message.id);
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if(!f) {
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console.error(`Unexpected ${message.type} for file transfer`);
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return;
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}
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if(message.type === 'offer')
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f.answer(message.sdp).catch(e => f.cancel(e));
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else
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f.receiveFile(message.sdp).catch(e => f.cancel(e));
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f.receiveFile(message.sdp).catch(e => f.cancel(e));
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break;
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}
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case 'ice':
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@ -2226,7 +2275,7 @@ ServerConnection.prototype.fileTransfer = function(id, username, message) {
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console.error(`Unexpected ${message.type} for file transfer`);
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return;
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}
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f.event('cancelled', message.value || null);
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f.event('cancelled', message.message || null);
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f.close();
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break;
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}
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