Repository: SnapDrop/snapdrop Branch: master Commit: b8b78cc22a67 Files: 23 Total size: 118.2 KB Directory structure: gitextract_hpr_ld_l/ ├── .github/ │ └── FUNDING.yml ├── .gitignore ├── LICENSE ├── README.md ├── client/ │ ├── images/ │ │ └── snapdrop-graphics.sketch │ ├── index.html │ ├── manifest.json │ ├── scripts/ │ │ ├── clipboard.js │ │ ├── network.js │ │ └── ui.js │ ├── service-worker.js │ ├── sounds/ │ │ └── blop.ogg │ └── styles.css ├── docker/ │ ├── nginx/ │ │ └── default.conf │ ├── nginx-with-openssl.Dockerfile │ └── openssl/ │ ├── create.sh │ ├── snapdropCA.cnf │ └── snapdropCert.cnf ├── docker-compose.yml ├── docs/ │ ├── faq.md │ └── local-dev.md └── server/ ├── index.js └── package.json ================================================ FILE CONTENTS ================================================ ================================================ FILE: .github/FUNDING.yml ================================================ # These are supported funding model platforms github: robinlinus patreon: # Replace with a single Patreon username open_collective: # Replace with a single Open Collective username ko_fi: # Replace with a single Ko-fi username tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry liberapay: # Replace with a single Liberapay username issuehunt: # Replace with a single IssueHunt username otechie: # Replace with a single Otechie username custom: https://www.paypal.com/donate/?hosted_button_id=MG8GV7YCYT352 ================================================ FILE: .gitignore ================================================ node_modules .DS_Store fqdn.env /docker/certs ================================================ FILE: LICENSE ================================================ GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. 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The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an "about box". You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see . The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read . ================================================ FILE: README.md ================================================ # Snapdrop [Snapdrop](https://snapdrop.net): local file sharing in your browser. Inspired by Apple's Airdrop. ## Snapdrop is now LimeWire Dear Snapdrop community, Snapdrop has been acquired by LimeWire, a leading file sharing platform with integrated AI tools. You can continue to share any files between devices, while benefitting from: * sharing files between devices in the same network * anonymous up- & downloads * end-to-end encryption * up to 40GB storage for free users * integrated AI tools for signed-up users Visit [snapdrop.net](https://snapdrop.net) or [limewire.com](https://limewire.com) The Github repository will stay as-is and you can still go ahead and download and run the classic Snapdrop on your own infrastructure. ## Classic Snapdrop is built with the following awesome technologies * Vanilla HTML5 / ES6 / CSS3 frontend * [WebRTC](http://webrtc.org/) / [WebSockets](http://www.websocket.org/) * [NodeJS](https://nodejs.org/en/) backend * [Progressive Web App](https://wikipedia.org/wiki/Progressive_Web_App) Have any questions? Read our [FAQ](/docs/faq.md). You can [host your own instance with Docker](/docs/local-dev.md). ================================================ FILE: client/index.html ================================================ Snapdrop

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Snapdrop

The easiest way to transfer files across devices
 ================================================ FILE: client/manifest.json ================================================ { "name": "Snapdrop", "short_name": "Snapdrop", "icons": [{ "src": "images/android-chrome-192x192.png", "sizes": "192x192", "type": "image/png" },{ "src": "images/android-chrome-512x512.png", "sizes": "512x512", "type": "image/png" },{ "src": "images/android-chrome-192x192-maskable.png", "sizes": "192x192", "type": "image/png", "purpose": "maskable" },{ "src": "images/android-chrome-512x512-maskable.png", "sizes": "512x512", "type": "image/png", "purpose": "maskable" },{ "src": "images/favicon-96x96.png", "sizes": "96x96", "type": "image/png" }], "background_color": "#efefef", "display": "minimal-ui", "theme_color": "#3367d6", "share_target": { "method":"GET", "action": "/?share_target", "params": { "title": "title", "text": "text", "url": "url" } } } ================================================ FILE: client/scripts/clipboard.js ================================================ // Polyfill for Navigator.clipboard.writeText if (!navigator.clipboard) { navigator.clipboard = { writeText: text => { // A contains the text to copy const span = document.createElement('span'); span.textContent = text; span.style.whiteSpace = 'pre'; // Preserve consecutive spaces and newlines // Paint the span outside the viewport span.style.position = 'absolute'; span.style.left = '-9999px'; span.style.top = '-9999px'; const win = window; const selection = win.getSelection(); win.document.body.appendChild(span); const range = win.document.createRange(); selection.removeAllRanges(); range.selectNode(span); selection.addRange(range); let success = false; try { success = win.document.execCommand('copy'); } catch (err) { return Promise.error(); } selection.removeAllRanges(); span.remove(); return Promise.resolve(); } } } ================================================ FILE: client/scripts/network.js ================================================ window.URL = window.URL || window.webkitURL; window.isRtcSupported = !!(window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection); class ServerConnection { constructor() { this._connect(); Events.on('beforeunload', e => this._disconnect()); Events.on('pagehide', e => this._disconnect()); document.addEventListener('visibilitychange', e => this._onVisibilityChange()); } _connect() { clearTimeout(this._reconnectTimer); if (this._isConnected() || this._isConnecting()) return; const ws = new WebSocket(this._endpoint()); ws.binaryType = 'arraybuffer'; ws.onopen = e => console.log('WS: server connected'); ws.onmessage = e => this._onMessage(e.data); ws.onclose = e => this._onDisconnect(); ws.onerror = e => console.error(e); this._socket = ws; } _onMessage(msg) { msg = JSON.parse(msg); console.log('WS:', msg); switch (msg.type) { case 'peers': Events.fire('peers', msg.peers); break; case 'peer-joined': Events.fire('peer-joined', msg.peer); break; case 'peer-left': Events.fire('peer-left', msg.peerId); break; case 'signal': Events.fire('signal', msg); break; case 'ping': this.send({ type: 'pong' }); break; case 'display-name': Events.fire('display-name', msg); break; default: console.error('WS: unkown message type', msg); } } send(message) { if (!this._isConnected()) return; this._socket.send(JSON.stringify(message)); } _endpoint() { // hack to detect if deployment or development environment const protocol = location.protocol.startsWith('https') ? 'wss' : 'ws'; const webrtc = window.isRtcSupported ? '/webrtc' : '/fallback'; const url = protocol + '://' + location.host + location.pathname + 'server' + webrtc; return url; } _disconnect() { this.send({ type: 'disconnect' }); this._socket.onclose = null; this._socket.close(); } _onDisconnect() { console.log('WS: server disconnected'); Events.fire('notify-user', 'Connection lost. Retry in 5 seconds...'); clearTimeout(this._reconnectTimer); this._reconnectTimer = setTimeout(_ => this._connect(), 5000); } _onVisibilityChange() { if (document.hidden) return; this._connect(); } _isConnected() { return this._socket && this._socket.readyState === this._socket.OPEN; } _isConnecting() { return this._socket && this._socket.readyState === this._socket.CONNECTING; } } class Peer { constructor(serverConnection, peerId) { this._server = serverConnection; this._peerId = peerId; this._filesQueue = []; this._busy = false; } sendJSON(message) { this._send(JSON.stringify(message)); } sendFiles(files) { for (let i = 0; i < files.length; i++) { this._filesQueue.push(files[i]); } if (this._busy) return; this._dequeueFile(); } _dequeueFile() { if (!this._filesQueue.length) return; this._busy = true; const file = this._filesQueue.shift(); this._sendFile(file); } _sendFile(file) { this.sendJSON({ type: 'header', name: file.name, mime: file.type, size: file.size }); this._chunker = new FileChunker(file, chunk => this._send(chunk), offset => this._onPartitionEnd(offset)); this._chunker.nextPartition(); } _onPartitionEnd(offset) { this.sendJSON({ type: 'partition', offset: offset }); } _onReceivedPartitionEnd(offset) { this.sendJSON({ type: 'partition-received', offset: offset }); } _sendNextPartition() { if (!this._chunker || this._chunker.isFileEnd()) return; this._chunker.nextPartition(); } _sendProgress(progress) { this.sendJSON({ type: 'progress', progress: progress }); } _onMessage(message) { if (typeof message !== 'string') { this._onChunkReceived(message); return; } message = JSON.parse(message); console.log('RTC:', message); switch (message.type) { case 'header': this._onFileHeader(message); break; case 'partition': this._onReceivedPartitionEnd(message); break; case 'partition-received': this._sendNextPartition(); break; case 'progress': this._onDownloadProgress(message.progress); break; case 'transfer-complete': this._onTransferCompleted(); break; case 'text': this._onTextReceived(message); break; } } _onFileHeader(header) { this._lastProgress = 0; this._digester = new FileDigester({ name: header.name, mime: header.mime, size: header.size }, file => this._onFileReceived(file)); } _onChunkReceived(chunk) { if(!chunk.byteLength) return; this._digester.unchunk(chunk); const progress = this._digester.progress; this._onDownloadProgress(progress); // occasionally notify sender about our progress if (progress - this._lastProgress < 0.01) return; this._lastProgress = progress; this._sendProgress(progress); } _onDownloadProgress(progress) { Events.fire('file-progress', { sender: this._peerId, progress: progress }); } _onFileReceived(proxyFile) { Events.fire('file-received', proxyFile); this.sendJSON({ type: 'transfer-complete' }); } _onTransferCompleted() { this._onDownloadProgress(1); this._reader = null; this._busy = false; this._dequeueFile(); Events.fire('notify-user', 'File transfer completed.'); } sendText(text) { const unescaped = btoa(unescape(encodeURIComponent(text))); this.sendJSON({ type: 'text', text: unescaped }); } _onTextReceived(message) { const escaped = decodeURIComponent(escape(atob(message.text))); Events.fire('text-received', { text: escaped, sender: this._peerId }); } } class RTCPeer extends Peer { constructor(serverConnection, peerId) { super(serverConnection, peerId); if (!peerId) return; // we will listen for a caller this._connect(peerId, true); } _connect(peerId, isCaller) { if (!this._conn) this._openConnection(peerId, isCaller); if (isCaller) { this._openChannel(); } else { this._conn.ondatachannel = e => this._onChannelOpened(e); } } _openConnection(peerId, isCaller) { this._isCaller = isCaller; this._peerId = peerId; this._conn = new RTCPeerConnection(RTCPeer.config); this._conn.onicecandidate = e => this._onIceCandidate(e); this._conn.onconnectionstatechange = e => this._onConnectionStateChange(e); this._conn.oniceconnectionstatechange = e => this._onIceConnectionStateChange(e); } _openChannel() { const channel = this._conn.createDataChannel('data-channel', { ordered: true, reliable: true // Obsolete. See https://developer.mozilla.org/en-US/docs/Web/API/RTCDataChannel/reliable }); channel.onopen = e => this._onChannelOpened(e); this._conn.createOffer().then(d => this._onDescription(d)).catch(e => this._onError(e)); } _onDescription(description) { // description.sdp = description.sdp.replace('b=AS:30', 'b=AS:1638400'); this._conn.setLocalDescription(description) .then(_ => this._sendSignal({ sdp: description })) .catch(e => this._onError(e)); } _onIceCandidate(event) { if (!event.candidate) return; this._sendSignal({ ice: event.candidate }); } onServerMessage(message) { if (!this._conn) this._connect(message.sender, false); if (message.sdp) { this._conn.setRemoteDescription(new RTCSessionDescription(message.sdp)) .then( _ => { if (message.sdp.type === 'offer') { return this._conn.createAnswer() .then(d => this._onDescription(d)); } }) .catch(e => this._onError(e)); } else if (message.ice) { this._conn.addIceCandidate(new RTCIceCandidate(message.ice)); } } _onChannelOpened(event) { console.log('RTC: channel opened with', this._peerId); const channel = event.channel || event.target; channel.binaryType = 'arraybuffer'; channel.onmessage = e => this._onMessage(e.data); channel.onclose = e => this._onChannelClosed(); this._channel = channel; } _onChannelClosed() { console.log('RTC: channel closed', this._peerId); if (!this.isCaller) return; this._connect(this._peerId, true); // reopen the channel } _onConnectionStateChange(e) { console.log('RTC: state changed:', this._conn.connectionState); switch (this._conn.connectionState) { case 'disconnected': this._onChannelClosed(); break; case 'failed': this._conn = null; this._onChannelClosed(); break; } } _onIceConnectionStateChange() { switch (this._conn.iceConnectionState) { case 'failed': console.error('ICE Gathering failed'); break; default: console.log('ICE Gathering', this._conn.iceConnectionState); } } _onError(error) { console.error(error); } _send(message) { if (!this._channel) return this.refresh(); this._channel.send(message); } _sendSignal(signal) { signal.type = 'signal'; signal.to = this._peerId; this._server.send(signal); } refresh() { // check if channel is open. otherwise create one if (this._isConnected() || this._isConnecting()) return; this._connect(this._peerId, this._isCaller); } _isConnected() { return this._channel && this._channel.readyState === 'open'; } _isConnecting() { return this._channel && this._channel.readyState === 'connecting'; } } class PeersManager { constructor(serverConnection) { this.peers = {}; this._server = serverConnection; Events.on('signal', e => this._onMessage(e.detail)); Events.on('peers', e => this._onPeers(e.detail)); Events.on('files-selected', e => this._onFilesSelected(e.detail)); Events.on('send-text', e => this._onSendText(e.detail)); Events.on('peer-left', e => this._onPeerLeft(e.detail)); } _onMessage(message) { if (!this.peers[message.sender]) { this.peers[message.sender] = new RTCPeer(this._server); } this.peers[message.sender].onServerMessage(message); } _onPeers(peers) { peers.forEach(peer => { if (this.peers[peer.id]) { this.peers[peer.id].refresh(); return; } if (window.isRtcSupported && peer.rtcSupported) { this.peers[peer.id] = new RTCPeer(this._server, peer.id); } else { this.peers[peer.id] = new WSPeer(this._server, peer.id); } }) } sendTo(peerId, message) { this.peers[peerId].send(message); } _onFilesSelected(message) { this.peers[message.to].sendFiles(message.files); } _onSendText(message) { this.peers[message.to].sendText(message.text); } _onPeerLeft(peerId) { const peer = this.peers[peerId]; delete this.peers[peerId]; if (!peer || !peer._peer) return; peer._peer.close(); } } class WSPeer { _send(message) { message.to = this._peerId; this._server.send(message); } } class FileChunker { constructor(file, onChunk, onPartitionEnd) { this._chunkSize = 64000; // 64 KB this._maxPartitionSize = 1e6; // 1 MB this._offset = 0; this._partitionSize = 0; this._file = file; this._onChunk = onChunk; this._onPartitionEnd = onPartitionEnd; this._reader = new FileReader(); this._reader.addEventListener('load', e => this._onChunkRead(e.target.result)); } nextPartition() { this._partitionSize = 0; this._readChunk(); } _readChunk() { const chunk = this._file.slice(this._offset, this._offset + this._chunkSize); this._reader.readAsArrayBuffer(chunk); } _onChunkRead(chunk) { this._offset += chunk.byteLength; this._partitionSize += chunk.byteLength; this._onChunk(chunk); if (this.isFileEnd()) return; if (this._isPartitionEnd()) { this._onPartitionEnd(this._offset); return; } this._readChunk(); } repeatPartition() { this._offset -= this._partitionSize; this._nextPartition(); } _isPartitionEnd() { return this._partitionSize >= this._maxPartitionSize; } isFileEnd() { return this._offset >= this._file.size; } get progress() { return this._offset / this._file.size; } } class FileDigester { constructor(meta, callback) { this._buffer = []; this._bytesReceived = 0; this._size = meta.size; this._mime = meta.mime || 'application/octet-stream'; this._name = meta.name; this._callback = callback; } unchunk(chunk) { this._buffer.push(chunk); this._bytesReceived += chunk.byteLength || chunk.size; const totalChunks = this._buffer.length; this.progress = this._bytesReceived / this._size; if (isNaN(this.progress)) this.progress = 1 if (this._bytesReceived < this._size) return; // we are done let blob = new Blob(this._buffer, { type: this._mime }); this._callback({ name: this._name, mime: this._mime, size: this._size, blob: blob }); } } class Events { static fire(type, detail) { window.dispatchEvent(new CustomEvent(type, { detail: detail })); } static on(type, callback) { return window.addEventListener(type, callback, false); } static off(type, callback) { return window.removeEventListener(type, callback, false); } } RTCPeer.config = { 'sdpSemantics': 'unified-plan', 'iceServers': [{ urls: 'stun:stun.l.google.com:19302' }] } ================================================ FILE: client/scripts/ui.js ================================================ const $ = query => document.getElementById(query); const $$ = query => document.body.querySelector(query); const isURL = text => /^((https?:\/\/|www)[^\s]+)/g.test(text.toLowerCase()); window.isDownloadSupported = (typeof document.createElement('a').download !== 'undefined'); window.isProductionEnvironment = !window.location.host.startsWith('localhost'); window.iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream; // set display name Events.on('display-name', e => { const me = e.detail.message; const $displayName = $('displayName') $displayName.textContent = 'You are known as ' + me.displayName; $displayName.title = me.deviceName; }); class PeersUI { constructor() { Events.on('peer-joined', e => this._onPeerJoined(e.detail)); Events.on('peer-left', e => this._onPeerLeft(e.detail)); Events.on('peers', e => this._onPeers(e.detail)); Events.on('file-progress', e => this._onFileProgress(e.detail)); Events.on('paste', e => this._onPaste(e)); } _onPeerJoined(peer) { if ($(peer.id)) return; // peer already exists const peerUI = new PeerUI(peer); $$('x-peers').appendChild(peerUI.$el); setTimeout(e => window.animateBackground(false), 1750); // Stop animation } _onPeers(peers) { this._clearPeers(); peers.forEach(peer => this._onPeerJoined(peer)); } _onPeerLeft(peerId) { const $peer = $(peerId); if (!$peer) return; $peer.remove(); } _onFileProgress(progress) { const peerId = progress.sender || progress.recipient; const $peer = $(peerId); if (!$peer) return; $peer.ui.setProgress(progress.progress); } _clearPeers() { const $peers = $$('x-peers').innerHTML = ''; } _onPaste(e) { const files = e.clipboardData.files || e.clipboardData.items .filter(i => i.type.indexOf('image') > -1) .map(i => i.getAsFile()); const peers = document.querySelectorAll('x-peer'); // send the pasted image content to the only peer if there is one // otherwise, select the peer somehow by notifying the client that // "image data has been pasted, click the client to which to send it" // not implemented if (files.length > 0 && peers.length === 1) { Events.fire('files-selected', { files: files, to: $$('x-peer').id }); } } } class PeerUI { html() { return ` ` } constructor(peer) { this._peer = peer; this._initDom(); this._bindListeners(this.$el); } _initDom() { const el = document.createElement('x-peer'); el.id = this._peer.id; el.innerHTML = this.html(); el.ui = this; el.querySelector('svg use').setAttribute('xlink:href', this._icon()); el.querySelector('.name').textContent = this._displayName(); el.querySelector('.device-name').textContent = this._deviceName(); this.$el = el; this.$progress = el.querySelector('.progress'); } _bindListeners(el) { el.querySelector('input').addEventListener('change', e => this._onFilesSelected(e)); el.addEventListener('drop', e => this._onDrop(e)); el.addEventListener('dragend', e => this._onDragEnd(e)); el.addEventListener('dragleave', e => this._onDragEnd(e)); el.addEventListener('dragover', e => this._onDragOver(e)); el.addEventListener('contextmenu', e => this._onRightClick(e)); el.addEventListener('touchstart', e => this._onTouchStart(e)); el.addEventListener('touchend', e => this._onTouchEnd(e)); // prevent browser's default file drop behavior Events.on('dragover', e => e.preventDefault()); Events.on('drop', e => e.preventDefault()); } _displayName() { return this._peer.name.displayName; } _deviceName() { return this._peer.name.deviceName; } _icon() { const device = this._peer.name.device || this._peer.name; if (device.type === 'mobile') { return '#phone-iphone'; } if (device.type === 'tablet') { return '#tablet-mac'; } return '#desktop-mac'; } _onFilesSelected(e) { const $input = e.target; const files = $input.files; Events.fire('files-selected', { files: files, to: this._peer.id }); $input.value = null; // reset input } setProgress(progress) { if (progress > 0) { this.$el.setAttribute('transfer', '1'); } if (progress > 0.5) { this.$progress.classList.add('over50'); } else { this.$progress.classList.remove('over50'); } const degrees = `rotate(${360 * progress}deg)`; this.$progress.style.setProperty('--progress', degrees); if (progress >= 1) { this.setProgress(0); this.$el.removeAttribute('transfer'); } } _onDrop(e) { e.preventDefault(); const files = e.dataTransfer.files; Events.fire('files-selected', { files: files, to: this._peer.id }); this._onDragEnd(); } _onDragOver() { this.$el.setAttribute('drop', 1); } _onDragEnd() { this.$el.removeAttribute('drop'); } _onRightClick(e) { e.preventDefault(); Events.fire('text-recipient', this._peer.id); } _onTouchStart(e) { this._touchStart = Date.now(); this._touchTimer = setTimeout(_ => this._onTouchEnd(), 610); } _onTouchEnd(e) { if (Date.now() - this._touchStart < 500) { clearTimeout(this._touchTimer); } else { // this was a long tap if (e) e.preventDefault(); Events.fire('text-recipient', this._peer.id); } } } class Dialog { constructor(id) { this.$el = $(id); this.$el.querySelectorAll('[close]').forEach(el => el.addEventListener('click', e => this.hide())) this.$autoFocus = this.$el.querySelector('[autofocus]'); } show() { this.$el.setAttribute('show', 1); if (this.$autoFocus) this.$autoFocus.focus(); } hide() { this.$el.removeAttribute('show'); document.activeElement.blur(); window.blur(); } } class ReceiveDialog extends Dialog { constructor() { super('receiveDialog'); Events.on('file-received', e => { this._nextFile(e.detail); window.blop.play(); }); this._filesQueue = []; } _nextFile(nextFile) { if (nextFile) this._filesQueue.push(nextFile); if (this._busy) return; this._busy = true; const file = this._filesQueue.shift(); this._displayFile(file); } _dequeueFile() { if (!this._filesQueue.length) { // nothing to do this._busy = false; return; } // dequeue next file setTimeout(_ => { this._busy = false; this._nextFile(); }, 300); } _displayFile(file) { const $a = this.$el.querySelector('#download'); const url = URL.createObjectURL(file.blob); $a.href = url; $a.download = file.name; if(this._autoDownload()){ $a.click() return } if(file.mime.split('/')[0] === 'image'){ console.log('the file is image'); this.$el.querySelector('.preview').style.visibility = 'inherit'; this.$el.querySelector("#img-preview").src = url; } this.$el.querySelector('#fileName').textContent = file.name; this.$el.querySelector('#fileSize').textContent = this._formatFileSize(file.size); this.show(); if (window.isDownloadSupported) return; // fallback for iOS $a.target = '_blank'; const reader = new FileReader(); reader.onload = e => $a.href = reader.result; reader.readAsDataURL(file.blob); } _formatFileSize(bytes) { if (bytes >= 1e9) { return (Math.round(bytes / 1e8) / 10) + ' GB'; } else if (bytes >= 1e6) { return (Math.round(bytes / 1e5) / 10) + ' MB'; } else if (bytes > 1000) { return Math.round(bytes / 1000) + ' KB'; } else { return bytes + ' Bytes'; } } hide() { this.$el.querySelector('.preview').style.visibility = 'hidden'; this.$el.querySelector("#img-preview").src = ""; super.hide(); this._dequeueFile(); } _autoDownload(){ return !this.$el.querySelector('#autoDownload').checked } } class SendTextDialog extends Dialog { constructor() { super('sendTextDialog'); Events.on('text-recipient', e => this._onRecipient(e.detail)) this.$text = this.$el.querySelector('#textInput'); const button = this.$el.querySelector('form'); button.addEventListener('submit', e => this._send(e)); } _onRecipient(recipient) { this._recipient = recipient; this._handleShareTargetText(); this.show(); const range = document.createRange(); const sel = window.getSelection(); range.selectNodeContents(this.$text); sel.removeAllRanges(); sel.addRange(range); } _handleShareTargetText() { if (!window.shareTargetText) return; this.$text.textContent = window.shareTargetText; window.shareTargetText = ''; } _send(e) { e.preventDefault(); Events.fire('send-text', { to: this._recipient, text: this.$text.innerText }); } } class ReceiveTextDialog extends Dialog { constructor() { super('receiveTextDialog'); Events.on('text-received', e => this._onText(e.detail)) this.$text = this.$el.querySelector('#text'); const $copy = this.$el.querySelector('#copy'); copy.addEventListener('click', _ => this._onCopy()); } _onText(e) { this.$text.innerHTML = ''; const text = e.text; if (isURL(text)) { const $a = document.createElement('a'); $a.href = text; $a.target = '_blank'; $a.textContent = text; this.$text.appendChild($a); } else { this.$text.textContent = text; } this.show(); window.blop.play(); } async _onCopy() { await navigator.clipboard.writeText(this.$text.textContent); Events.fire('notify-user', 'Copied to clipboard'); } } class Toast extends Dialog { constructor() { super('toast'); Events.on('notify-user', e => this._onNotfiy(e.detail)); } _onNotfiy(message) { this.$el.textContent = message; this.show(); setTimeout(_ => this.hide(), 3000); } } class Notifications { constructor() { // Check if the browser supports notifications if (!('Notification' in window)) return; // Check whether notification permissions have already been granted if (Notification.permission !== 'granted') { this.$button = $('notification'); this.$button.removeAttribute('hidden'); this.$button.addEventListener('click', e => this._requestPermission()); } Events.on('text-received', e => this._messageNotification(e.detail.text)); Events.on('file-received', e => this._downloadNotification(e.detail.name)); } _requestPermission() { Notification.requestPermission(permission => { if (permission !== 'granted') { Events.fire('notify-user', Notifications.PERMISSION_ERROR || 'Error'); return; } this._notify('Even more snappy sharing!'); this.$button.setAttribute('hidden', 1); }); } _notify(message, body) { const config = { body: body, icon: '/images/logo_transparent_128x128.png', } let notification; try { notification = new Notification(message, config); } catch (e) { // Android doesn't support "new Notification" if service worker is installed if (!serviceWorker || !serviceWorker.showNotification) return; notification = serviceWorker.showNotification(message, config); } // Notification is persistent on Android. We have to close it manually const visibilitychangeHandler = () => { if (document.visibilityState === 'visible') { notification.close(); Events.off('visibilitychange', visibilitychangeHandler); } }; Events.on('visibilitychange', visibilitychangeHandler); return notification; } _messageNotification(message) { if (document.visibilityState !== 'visible') { if (isURL(message)) { const notification = this._notify(message, 'Click to open link'); this._bind(notification, e => window.open(message, '_blank', null, true)); } else { const notification = this._notify(message, 'Click to copy text'); this._bind(notification, e => this._copyText(message, notification)); } } } _downloadNotification(message) { if (document.visibilityState !== 'visible') { const notification = this._notify(message, 'Click to download'); if (!window.isDownloadSupported) return; this._bind(notification, e => this._download(notification)); } } _download(notification) { document.querySelector('x-dialog [download]').click(); notification.close(); } _copyText(message, notification) { notification.close(); if (!navigator.clipboard.writeText(message)) return; this._notify('Copied text to clipboard'); } _bind(notification, handler) { if (notification.then) { notification.then(e => serviceWorker.getNotifications().then(notifications => { serviceWorker.addEventListener('notificationclick', handler); })); } else { notification.onclick = handler; } } } class NetworkStatusUI { constructor() { window.addEventListener('offline', e => this._showOfflineMessage(), false); window.addEventListener('online', e => this._showOnlineMessage(), false); if (!navigator.onLine) this._showOfflineMessage(); } _showOfflineMessage() { Events.fire('notify-user', 'You are offline'); } _showOnlineMessage() { Events.fire('notify-user', 'You are back online'); } } class WebShareTargetUI { constructor() { const parsedUrl = new URL(window.location); const title = parsedUrl.searchParams.get('title'); const text = parsedUrl.searchParams.get('text'); const url = parsedUrl.searchParams.get('url'); let shareTargetText = title ? title : ''; shareTargetText += text ? shareTargetText ? ' ' + text : text : ''; if(url) shareTargetText = url; // We share only the Link - no text. Because link-only text becomes clickable. if (!shareTargetText) return; window.shareTargetText = shareTargetText; history.pushState({}, 'URL Rewrite', '/'); console.log('Shared Target Text:', '"' + shareTargetText + '"'); } } class Snapdrop { constructor() { const server = new ServerConnection(); const peers = new PeersManager(server); const peersUI = new PeersUI(); Events.on('load', e => { const receiveDialog = new ReceiveDialog(); const sendTextDialog = new SendTextDialog(); const receiveTextDialog = new ReceiveTextDialog(); const toast = new Toast(); const notifications = new Notifications(); const networkStatusUI = new NetworkStatusUI(); const webShareTargetUI = new WebShareTargetUI(); }); } } const snapdrop = new Snapdrop(); if ('serviceWorker' in navigator) { navigator.serviceWorker.register('service-worker.js') .then(serviceWorker => { console.log('Service Worker registered'); window.serviceWorker = serviceWorker }); } window.addEventListener('beforeinstallprompt', e => { if (window.matchMedia('(display-mode: standalone)').matches) { // don't display install banner when installed return e.preventDefault(); } else { const btn = document.querySelector('#install') btn.hidden = false; btn.onclick = _ => e.prompt(); return e.preventDefault(); } }); // Background Animation Events.on('load', () => { let c = document.createElement('canvas'); document.body.appendChild(c); let style = c.style; style.width = '100%'; style.position = 'absolute'; style.zIndex = -1; style.top = 0; style.left = 0; let ctx = c.getContext('2d'); let x0, y0, w, h, dw; function init() { w = window.innerWidth; h = window.innerHeight; c.width = w; c.height = h; let offset = h > 380 ? 100 : 65; offset = h > 800 ? 116 : offset; x0 = w / 2; y0 = h - offset; dw = Math.max(w, h, 1000) / 13; drawCircles(); } window.onresize = init; function drawCircle(radius) { ctx.beginPath(); let color = Math.round(197 * (1 - radius / Math.max(w, h))); ctx.strokeStyle = 'rgba(' + color + ',' + color + ',' + color + ',0.1)'; ctx.arc(x0, y0, radius, 0, 2 * Math.PI); ctx.stroke(); ctx.lineWidth = 2; } let step = 0; function drawCircles() { ctx.clearRect(0, 0, w, h); for (let i = 0; i < 8; i++) { drawCircle(dw * i + step % dw); } step += 1; } let loading = true; function animate() { if (loading || step % dw < dw - 5) { requestAnimationFrame(function() { drawCircles(); animate(); }); } } window.animateBackground = function(l) { loading = l; animate(); }; init(); animate(); }); Notifications.PERMISSION_ERROR = ` Notifications permission has been blocked as the user has dismissed the permission prompt several times. This can be reset in Page Info which can be accessed by clicking the lock icon next to the URL.`; document.body.onclick = e => { // safari hack to fix audio document.body.onclick = null; if (!(/.*Version.*Safari.*/.test(navigator.userAgent))) return; blop.play(); } ================================================ FILE: client/service-worker.js ================================================ var CACHE_NAME = 'snapdrop-cache-v2'; var urlsToCache = [ 'index.html', './', 'styles.css', 'scripts/network.js', 'scripts/ui.js', 'scripts/clipboard.js', 'sounds/blop.mp3', 'images/favicon-96x96.png' ]; self.addEventListener('install', function(event) { // Perform install steps event.waitUntil( caches.open(CACHE_NAME) .then(function(cache) { console.log('Opened cache'); return cache.addAll(urlsToCache); }) ); }); self.addEventListener('fetch', function(event) { event.respondWith( caches.match(event.request) .then(function(response) { // Cache hit - return response if (response) { return response; } return fetch(event.request); } ) ); }); self.addEventListener('activate', function(event) { console.log('Updating Service Worker...') event.waitUntil( caches.keys().then(function(cacheNames) { return Promise.all( cacheNames.filter(function(cacheName) { // Return true if you want to remove this cache, // but remember that caches are shared across // the whole origin return true }).map(function(cacheName) { return caches.delete(cacheName); }) ); }) ); }); ================================================ FILE: client/styles.css ================================================ /* Constants */ :root { --icon-size: 24px; --primary-color: #4285f4; --peer-width: 120px; --text-color: #333; --bg-color: #fafafa; --bg-color-secondary: #f1f3f4; } /* Layout */ html { height: 100%; } html, body { margin: 0; display: flex; flex-direction: column; width: 100%; overflow-x: hidden; } body { flex-grow: 1; align-items: center; justify-content: center; overflow-y: hidden; } .row-reverse { display: flex; flex-direction: row-reverse; } .row { display: flex; flex-direction: row; } .column { display: flex; flex-direction: column; } .center { display: flex; align-items: center; justify-content: center; } .grow { flex-grow: 1; } .full { position: absolute; top: 0; left: 0; right: 0; bottom: 0; } header { position: absolute; top: 0; left: 0; right: 0; height: 56px; align-items: center; padding: 16px; box-sizing: border-box; } [hidden] { display: none !important; } /* Typography */ body { font-family: -apple-system, BlinkMacSystemFont, Roboto, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } h1 { font-size: 34px; font-weight: 400; letter-spacing: -.01em; line-height: 40px; margin: 8px 0 0; } h2 { font-size: 24px; font-weight: 400; letter-spacing: -.012em; line-height: 32px; } h3 { font-size: 20px; font-weight: 500; margin: 16px 0; } .font-subheading { font-size: 16px; font-weight: 400; line-height: 24px; word-break: break-all; } .font-body1, body { font-size: 14px; font-weight: 400; line-height: 20px; } .font-body2 { font-size: 12px; line-height: 18px; } a { text-decoration: none; color: currentColor; cursor: pointer; } /* Icons */ .icon { width: var(--icon-size); height: var(--icon-size); fill: currentColor; } /* Shadows */ [shadow="1"] { box-shadow: 0 3px 4px 0 rgba(0, 0, 0, 0.14), 0 1px 8px 0 rgba(0, 0, 0, 0.12), 0 3px 3px -2px rgba(0, 0, 0, 0.4); } [shadow="2"] { box-shadow: 0 4px 5px 0 rgba(0, 0, 0, 0.14), 0 1px 10px 0 rgba(0, 0, 0, 0.12), 0 2px 4px -1px rgba(0, 0, 0, 0.4); } /* Animations */ @keyframes fade-in { 0% { opacity: 0; } } /* Main Header */ body>header a { margin-left: 8px; } /* Peers List */ x-peers { width: 100%; overflow: hidden; flex-flow: row wrap; z-index: 2; } /* Empty Peers List */ x-no-peers { padding: 8px; text-align: center; /* prevent flickering on load */ animation: fade-in 300ms; animation-delay: 500ms; animation-fill-mode: backwards; } x-no-peers h2, x-no-peers a { color: var(--primary-color); } x-peers:not(:empty)+x-no-peers { display: none; } /* Peer */ x-peer { -webkit-user-select: none; user-select: none; } x-peer label { width: var(--peer-width); padding: 8px; cursor: pointer; touch-action: manipulation; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); position: relative; } x-peer .name { width: var(--peer-width); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: center; } input[type="file"] { visibility: hidden; position: absolute; } x-peer x-icon { --icon-size: 40px; width: var(--icon-size); padding: 12px; border-radius: 50%; background: var(--primary-color); color: white; display: flex; margin-bottom: 8px; transition: transform 150ms; will-change: transform; } x-peer:not([transfer]):hover x-icon, x-peer:not([transfer]):focus x-icon { transform: scale(1.05); } x-peer[transfer] x-icon { box-shadow: none; opacity: 0.8; transform: scale(1); } .status, .device-name { height: 18px; opacity: 0.7; } x-peer[transfer] .status:before { content: 'Transferring...'; } x-peer:not([transfer]) .status, x-peer[transfer] .device-name { display: none; } x-peer x-icon { animation: pop 600ms ease-out 1; } @keyframes pop { 0% { transform: scale(0.7); } 40% { transform: scale(1.2); } } x-peer[drop] x-icon { transform: scale(1.1); } /* Footer */ footer { position: absolute; bottom: 0; left: 0; right: 0; align-items: center; padding: 0 0 16px 0; text-align: center; } footer .logo { --icon-size: 80px; margin-bottom: 8px; color: var(--primary-color); } footer .font-body2 { color: var(--primary-color); } @media (min-height: 800px) { footer { margin-bottom: 16px; } } /* Dialog */ x-dialog x-background { background: rgba(0, 0, 0, 0.61); z-index: 10; transition: opacity 300ms; will-change: opacity; padding: 16px; } x-dialog x-paper { z-index: 3; background: white; border-radius: 8px; padding: 16px 24px; width: 100%; max-width: 400px; box-sizing: border-box; transition: transform 300ms; will-change: transform; } x-dialog:not([show]) { pointer-events: none; } x-dialog:not([show]) x-paper { transform: scale(0.1); } x-dialog:not([show]) x-background { opacity: 0; } x-dialog .row-reverse>.button { margin-top: 16px; margin-left: 8px; } x-dialog a { color: var(--primary-color); } /* Receive Dialog */ #receiveDialog .row { margin-top: 24px; margin-bottom: 8px; } /* Receive Text Dialog */ #receiveTextDialog #text { width: 100%; word-break: break-all; max-height: 300px; overflow-x: hidden; overflow-y: auto; -webkit-user-select: all; -moz-user-select: all; user-select: all; white-space: pre-wrap; } #receiveTextDialog #text a { cursor: pointer; } #receiveTextDialog #text a:hover { text-decoration: underline; } #receiveTextDialog h3 { /* Select the received text when double-clicking the dialog */ user-select: none; pointer-events: none; } /* Button */ .button { padding: 0 16px; box-sizing: border-box; min-height: 36px; min-width: 100px; font-size: 14px; line-height: 24px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; white-space: nowrap; cursor: pointer; user-select: none; background: inherit; color: var(--primary-color); } .button, .icon-button { position: relative; display: flex; align-items: center; justify-content: center; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); touch-action: manipulation; border: none; outline: none; } .button:before, .icon-button:before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: currentColor; opacity: 0; transition: opacity 300ms; } .button:hover:before, .icon-button:hover:before { opacity: 0.1; } .button:before { border-radius: 8px; } .button:focus:before, .icon-button:focus:before { opacity: 0.2; } button::-moz-focus-inner { border: 0; } /* Icon Button */ .icon-button { width: 40px; height: 40px; } .icon-button:before { border-radius: 50%; } /* Text Input */ .textarea { box-sizing: border-box; border: none; outline: none; padding: 16px 24px; border-radius: 16px; margin: 8px 0; font-size: 14px; font-family: inherit; background: #f1f3f4; display: block; overflow: auto; resize: none; min-height: 40px; line-height: 16px; max-height: 300px; } /* Info Animation */ #about { color: white; z-index: 11; overflow: hidden; pointer-events: none; text-align: center; } #about .fade-in { transition: opacity 300ms; will-change: opacity; transition-delay: 300ms; z-index: 11; pointer-events: all; } #about:not(:target) .fade-in { opacity: 0; pointer-events: none; transition-delay: 0; } #about .logo { --icon-size: 96px; } #about x-background { position: absolute; top: calc(32px - 200px); right: calc(32px - 200px); width: 400px; height: 400px; border-radius: 50%; background: var(--primary-color); transform: scale(0); z-index: -1; } /* Hack such that initial scale(0) isn't animated */ #about x-background { will-change: transform; transition: transform 800ms cubic-bezier(0.77, 0, 0.175, 1); } #about:target x-background { transform: scale(12); } #about .row a { margin: 8px 8px -16px; } /* Loading Indicator */ .progress { width: 80px; height: 80px; position: absolute; top: 0px; clip: rect(0px, 80px, 80px, 40px); --progress: rotate(0deg); transition: transform 200ms; } .circle { width: 72px; height: 72px; border: 4px solid var(--primary-color); border-radius: 40px; position: absolute; clip: rect(0px, 40px, 80px, 0px); will-change: transform; transform: var(--progress); } .over50 { clip: rect(auto, auto, auto, auto); } .over50 .circle.right { transform: rotate(180deg); } /* Generic placeholder */ [placeholder]:empty:before { content: attr(placeholder); } /* Toast */ .toast-container { padding: 0 8px 24px; overflow: hidden; pointer-events: none; } x-toast { position: absolute; min-height: 48px; bottom: 24px; width: 100%; max-width: 344px; background-color: #323232; color: rgba(255, 255, 255, 0.95); align-items: center; box-sizing: border-box; padding: 8px 24px; z-index: 20; transition: opacity 200ms, transform 300ms ease-out; cursor: default; line-height: 24px; border-radius: 8px; pointer-events: all; } x-toast:not([show]):not(:hover) { opacity: 0; transform: translateY(100px); } /* Instructions */ x-instructions { position: absolute; top: 120px; opacity: 0.5; transition: opacity 300ms; z-index: -1; text-align: center; } x-instructions:before { content: attr(mobile); } x-peers:empty~x-instructions { opacity: 0; } /* Responsive Styles */ @media (min-height: 800px) { footer { margin-bottom: 16px; } } @media screen and (min-height: 800px), screen and (min-width: 1100px) { x-instructions:before { content: attr(desktop); } } @media (max-height: 420px) { x-instructions { top: 24px; } footer .logo { --icon-size: 40px; } } /* iOS specific styles */ @supports (-webkit-overflow-scrolling: touch) { html { position: fixed; } x-instructions:before { content: attr(mobile); } } /* Color Themes */ /* Default colors */ body { --text-color: #333; --bg-color: #fafafa; --bg-color-secondary: #f1f3f4; } /* Colored Elements */ body { color: var(--text-color); background-color: var(--bg-color); transition: background-color 0.5s ease; } x-dialog x-paper { background-color: var(--bg-color); } .textarea { color: var(--text-color); background-color: var(--bg-color-secondary); } /* Image Preview */ #img-preview{ max-width: 100%; max-height: 50vh; margin: auto; display: block; } /* Edge specific styles */ @supports (-ms-ime-align: auto) { html, body { overflow: hidden; } } ================================================ FILE: docker/nginx/default.conf ================================================ server { listen 80; #server_name your.domain; #charset koi8-r; #access_log /var/log/nginx/host.access.log main; expires epoch; location / { root /usr/share/nginx/html; index index.html index.htm; } location /server { proxy_connect_timeout 300; proxy_pass http://node:3000; proxy_set_header Connection "upgrade"; proxy_set_header Upgrade $http_upgrade; proxy_set_header X-Forwarded-for $remote_addr; } location /ca.crt { alias /etc/ssl/certs/snapdropCA.crt; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # error_page 500 502 503 504 /50x.html; location = /50x.html { root /usr/share/nginx/html; } } server { listen 443 ssl http2; ssl_certificate /etc/ssl/certs/snapdrop-dev.crt; ssl_certificate_key /etc/ssl/certs/snapdrop-dev.key; #server_name ; #charset koi8-r; #access_log /var/log/nginx/host.access.log main; expires epoch; location / { root /usr/share/nginx/html; index index.html index.htm; } location /server { proxy_connect_timeout 300; proxy_pass http://node:3000; proxy_set_header Connection "upgrade"; proxy_set_header Upgrade $http_upgrade; proxy_set_header X-Forwarded-for $remote_addr; } location /ca.crt { alias /etc/ssl/certs/snapdropCA.crt; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # error_page 500 502 503 504 /50x.html; location = /50x.html { root /usr/share/nginx/html; } } ================================================ FILE: docker/nginx-with-openssl.Dockerfile ================================================ FROM nginx:alpine RUN apk add --no-cache openssl ================================================ FILE: docker/openssl/create.sh ================================================ #!/bin/sh cnf_dir='/mnt/openssl/' certs_dir='/etc/ssl/certs/' openssl req -config ${cnf_dir}snapdropCA.cnf -new -x509 -days 1 -keyout ${certs_dir}snapdropCA.key -out ${certs_dir}snapdropCA.crt openssl req -config ${cnf_dir}snapdropCert.cnf -new -out /tmp/snapdrop-dev.csr -keyout ${certs_dir}snapdrop-dev.key openssl x509 -req -in /tmp/snapdrop-dev.csr -CA ${certs_dir}snapdropCA.crt -CAkey ${certs_dir}snapdropCA.key -CAcreateserial -extensions req_ext -extfile ${cnf_dir}snapdropCert.cnf -sha512 -days 1 -out ${certs_dir}snapdrop-dev.crt exec "$@" ================================================ FILE: docker/openssl/snapdropCA.cnf ================================================ [ req ] default_bits = 2048 default_md = sha256 default_days = 1 encrypt_key = no distinguished_name = subject x509_extensions = x509_ext string_mask = utf8only prompt = no [ subject ] organizationName = Snapdrop OU = CA commonName = snapdrop-CA [ x509_ext ] subjectKeyIdentifier = hash authorityKeyIdentifier = keyid:always,issuer # You only need digitalSignature below. *If* you don't allow # RSA Key transport (i.e., you use ephemeral cipher suites), then # omit keyEncipherment because that's key transport. basicConstraints = critical, CA:TRUE, pathlen:0 keyUsage = critical, digitalSignature, keyEncipherment, cRLSign, keyCertSign ================================================ FILE: docker/openssl/snapdropCert.cnf ================================================ [ req ] default_bits = 2048 default_md = sha256 default_days = 1 encrypt_key = no distinguished_name = subject req_extensions = req_ext string_mask = utf8only prompt = no [ subject ] organizationName = Snapdrop OU = Development # Use a friendly name here because it's presented to the user. The server's DNS # names are placed in Subject Alternate Names. Plus, DNS names here is deprecated # by both IETF and CA/Browser Forums. If you place a DNS name here, then you # must include the DNS name in the SAN too (otherwise, Chrome and others that # strictly follow the CA/Browser Baseline Requirements will fail). commonName = ${ENV::FQDN} [ req_ext ] subjectKeyIdentifier = hash basicConstraints = CA:FALSE keyUsage = digitalSignature, keyEncipherment subjectAltName = DNS:${ENV::FQDN} nsComment = "OpenSSL Generated Certificate" extendedKeyUsage = serverAuth ================================================ FILE: docker-compose.yml ================================================ version: "3" services: node: image: "node:lts-alpine" user: "node" working_dir: /home/node/app volumes: - ./server/:/home/node/app command: ash -c "npm i && node index.js" nginx: build: context: ./docker/ dockerfile: nginx-with-openssl.Dockerfile image: "nginx-with-openssl" volumes: - ./client:/usr/share/nginx/html - ./docker/nginx/default.conf:/etc/nginx/conf.d/default.conf - ./docker/certs:/etc/ssl/certs - ./docker/openssl:/mnt/openssl ports: - "8080:80" - "443:443" env_file: ./docker/fqdn.env entrypoint: /mnt/openssl/create.sh command: ["nginx", "-g", "daemon off;"] ================================================ FILE: docs/faq.md ================================================ # Frequently Asked Questions ### Instructions / Discussions * [Video Instructions](https://www.youtube.com/watch?v=4XN02GkcHUM) (Big thanks to [TheiTeckHq](https://www.youtube.com/channel/UC_DUzWMb8gZZnAbISQjmAfQ)) * [idownloadblog](http://www.idownloadblog.com/2015/12/29/snapdrop/) * [thenextweb](http://thenextweb.com/insider/2015/12/27/snapdrop-is-a-handy-web-based-replacement-for-apples-fiddly-airdrop-file-transfer-tool/) * [winboard](http://www.winboard.org/artikel-ratgeber/6253-dateien-vom-desktop-pc-mit-anderen-plattformen-teilen-mit-snapdrop.html) * [免費資源網路社群](https://free.com.tw/snapdrop/) * [Hackernews](https://news.ycombinator.com/front?day=2020-12-24) * [Reddit](https://www.reddit.com/r/Android/comments/et4qny/snapdrop_is_a_free_open_source_cross_platform/) * [Producthunt](https://www.producthunt.com/posts/snapdrop) ### Help! I can't install the PWA! if you are using a Chromium-based browser (Chrome, Edge, Brave, etc.), you can easily install Snapdrop PWA on your desktop by clicking the install button in the top-right corner while on [snapdrop.net](https://snapdrop.net) (see below). ### What about the connection? Is it a P2P-connection directly from device to device or is there any third-party-server? It uses a P2P connection if WebRTC is supported by the browser. WebRTC needs a Signaling Server, but it is only used to establish a connection and is not involved in the file transfer. ### What about privacy? Will files be saved on third-party-servers? None of your files are ever sent to any server. Files are sent only between peers. Snapdrop doesn't even use a database. If you are curious have a look [at the Server](https://github.com/RobinLinus/snapdrop/blob/master/server/). Even if Snapdrop was able to view the files being transfered, WebRTC encrypts the files on transit, so the server would be unable to read them. ### What about security? Are my files encrypted while being sent between the computers? Yes. Your files are sent using WebRTC, which encrypts them on transit. ### Why don't you implement feature xyz? Snapdrop is a study in radical simplicity. The user interface is insanely simple. Features are chosen very carefully because complexity grows quadratically since every feature potentially interferes with each other feature. We focus very narrowly on a single use case: instant file transfer. We are not trying to optimize for some edge-cases. We are optimizing the user flow of the average users. Don't be sad if we decline your feature request for the sake of simplicity. If you want to learn more about simplicity you can read [Insanely Simple: The Obsession that Drives Apple's Success](https://www.amazon.com/Insanely-Simple-Ken-Segall-audiobook/dp/B007Z9686O) or [Thinking, Fast and Slow](https://www.amazon.com/Thinking-Fast-Slow-Daniel-Kahneman/dp/0374533555). ### Snapdrop is awesome! How can I support it? * [Donate via PayPal to help cover the server costs](https://www.paypal.com/donate/?hosted_button_id=FTP9DXUR7LA7Q) * [File bugs, give feedback, submit suggestions](https://github.com/RobinLinus/snapdrop/issues) * Share Snapdrop on your social media. * Fix bugs and make a pull request. * Do security analysis and suggestions ## "Inofficial" Instances Here's a list of other people hosting inofficial instances of Snapdrop: - https://pairdrop.net/ - https://snapdrop.k26.ch/ - https://snapdrop.9pfs.repl.co/ - https://filedrop.codext.de/ - https://s.hoothin.com/ - https://www.wulingate.com/ - https://snapdrop.fairysoft.net/ - https://airtransferer.web.app/ - https://drop.wuyuan.dev - https://share.jck.cx DISCLAIMER: WE ARE NOT IN ANY WAY AFFILIATED WITH THE PEOPLE WHO RUN THESE INSTANCES. WE DO NOT KNOW THEM. WE CANNOT VERIFY THE CODE THEY ARE RUNNING! ## Third-Party Apps Here's a list of some third-party Snapdrop apps: 1. [Snapdrop Desktop App](https://github.com/alextwothousand/snapdrop-desktop) built on top of Electron. (Thanks to [alextwothousand!](https://github.com/alextwothousand/)). 1. [Snapdrop Android App](https://github.com/fm-sys/snapdrop-android) allows you to also send files directly from other apps via the share action. 1. [Snapdrop Flutter App](https://github.com/congnguyendinh0/snapdrop_flutter) 1. [Snapdrop iOS App](https://github.com/CDsigma/Snapdrop-iOS-App) 1. [Snapdrop Node App (with completely Node server)](https://github.com/Bellisario/node-snapdrop) 1. [SnapDrop VSCode Extension](https://github.com/Yash-Garg/snapdrop-vsc) 1. Feel free to make one :) [< Back](/README.md) ================================================ FILE: docs/local-dev.md ================================================ # Local Development ## Install First, [Install docker with docker-compose.](https://docs.docker.com/compose/install/) Then, clone the repository: ``` git clone https://github.com/RobinLinus/snapdrop.git cd snapdrop docker-compose up -d ``` Now point your browser to `http://localhost:8080`. - To restart the containers run `docker-compose restart`. - To stop the containers run `docker-compose stop`. - To debug the NodeJS server run `docker logs snapdrop_node_1`. ## Run locally by pulling image from Docker Hub Have docker installed, then use the command: ``` docker pull linuxserver/snapdrop ``` To run the image, type (if port 8080 is occupied by host use another random port :80): ``` docker run -d -p 8080:80 linuxserver/snapdrop ``` ## Testing PWA related features PWAs require that the app is served under a correctly set up and trusted TLS endpoint. The nginx container creates a CA certificate and a website certificate for you. To correctly set the common name of the certificate, you need to change the FQDN environment variable in `docker/fqdn.env` to the fully qualified domain name of your workstation. If you want to test PWA features, you need to trust the CA of the certificate for your local deployment. For your convenience, you can download the crt file from `http://:8080/ca.crt`. Install that certificate to the trust store of your operating system. - On Windows, make sure to install it to the `Trusted Root Certification Authorities` store. - On MacOS, double click the installed CA certificate in `Keychain Access`, expand `Trust`, and select `Always Trust` for SSL. - Firefox uses its own trust store. To install the CA, point Firefox at `http://:8080/ca.crt`. When prompted, select `Trust this CA to identify websites` and click OK. - When using Chrome, you need to restart Chrome so it reloads the trust store (`chrome://restart`). Additionally, after installing a new cert, you need to clear the Storage (DevTools -> Application -> Clear storage -> Clear site data). Please note that the certificates (CA and webserver cert) expire after a day. Also, whenever you restart the nginx docker, container new certificates are created. The site is served on `https://:443`.     ## Deployment Notes The client expects the server at http(s)://your.domain/server. When serving the node server behind a proxy, the `X-Forwarded-For` header has to be set by the proxy. Otherwise, all clients that are served by the proxy will be mutually visible. By default, the server listens on port 3000. For an nginx configuration example, see `docker/nginx/default.conf`. [< Back](/README.md) ================================================ FILE: server/index.js ================================================ var process = require('process') // Handle SIGINT process.on('SIGINT', () => { console.info("SIGINT Received, exiting...") process.exit(0) }) // Handle SIGTERM process.on('SIGTERM', () => { console.info("SIGTERM Received, exiting...") process.exit(0) }) const parser = require('ua-parser-js'); const { uniqueNamesGenerator, animals, colors } = require('unique-names-generator'); class SnapdropServer { constructor(port) { const WebSocket = require('ws'); this._wss = new WebSocket.Server({ port: port }); this._wss.on('connection', (socket, request) => this._onConnection(new Peer(socket, request))); this._wss.on('headers', (headers, response) => this._onHeaders(headers, response)); this._rooms = {}; console.log('Snapdrop is running on port', port); } _onConnection(peer) { this._joinRoom(peer); peer.socket.on('message', message => this._onMessage(peer, message)); peer.socket.on('error', console.error); this._keepAlive(peer); // send displayName this._send(peer, { type: 'display-name', message: { displayName: peer.name.displayName, deviceName: peer.name.deviceName } }); } _onHeaders(headers, response) { if (response.headers.cookie && response.headers.cookie.indexOf('peerid=') > -1) return; response.peerId = Peer.uuid(); headers.push('Set-Cookie: peerid=' + response.peerId + "; SameSite=Strict; Secure"); } _onMessage(sender, message) { // Try to parse message try { message = JSON.parse(message); } catch (e) { return; // TODO: handle malformed JSON } switch (message.type) { case 'disconnect': this._leaveRoom(sender); break; case 'pong': sender.lastBeat = Date.now(); break; } // relay message to recipient if (message.to && this._rooms[sender.ip]) { const recipientId = message.to; // TODO: sanitize const recipient = this._rooms[sender.ip][recipientId]; delete message.to; // add sender id message.sender = sender.id; this._send(recipient, message); return; } } _joinRoom(peer) { // if room doesn't exist, create it if (!this._rooms[peer.ip]) { this._rooms[peer.ip] = {}; } // notify all other peers for (const otherPeerId in this._rooms[peer.ip]) { const otherPeer = this._rooms[peer.ip][otherPeerId]; this._send(otherPeer, { type: 'peer-joined', peer: peer.getInfo() }); } // notify peer about the other peers const otherPeers = []; for (const otherPeerId in this._rooms[peer.ip]) { otherPeers.push(this._rooms[peer.ip][otherPeerId].getInfo()); } this._send(peer, { type: 'peers', peers: otherPeers }); // add peer to room this._rooms[peer.ip][peer.id] = peer; } _leaveRoom(peer) { if (!this._rooms[peer.ip] || !this._rooms[peer.ip][peer.id]) return; this._cancelKeepAlive(this._rooms[peer.ip][peer.id]); // delete the peer delete this._rooms[peer.ip][peer.id]; peer.socket.terminate(); //if room is empty, delete the room if (!Object.keys(this._rooms[peer.ip]).length) { delete this._rooms[peer.ip]; } else { // notify all other peers for (const otherPeerId in this._rooms[peer.ip]) { const otherPeer = this._rooms[peer.ip][otherPeerId]; this._send(otherPeer, { type: 'peer-left', peerId: peer.id }); } } } _send(peer, message) { if (!peer) return; if (this._wss.readyState !== this._wss.OPEN) return; message = JSON.stringify(message); peer.socket.send(message, error => ''); } _keepAlive(peer) { this._cancelKeepAlive(peer); var timeout = 30000; if (!peer.lastBeat) { peer.lastBeat = Date.now(); } if (Date.now() - peer.lastBeat > 2 * timeout) { this._leaveRoom(peer); return; } this._send(peer, { type: 'ping' }); peer.timerId = setTimeout(() => this._keepAlive(peer), timeout); } _cancelKeepAlive(peer) { if (peer && peer.timerId) { clearTimeout(peer.timerId); } } } class Peer { constructor(socket, request) { // set socket this.socket = socket; // set remote ip this._setIP(request); // set peer id this._setPeerId(request) // is WebRTC supported ? this.rtcSupported = request.url.indexOf('webrtc') > -1; // set name this._setName(request); // for keepalive this.timerId = 0; this.lastBeat = Date.now(); } _setIP(request) { if (request.headers['x-forwarded-for']) { this.ip = request.headers['x-forwarded-for'].split(/\s*,\s*/)[0]; } else { this.ip = request.connection.remoteAddress; } // IPv4 and IPv6 use different values to refer to localhost if (this.ip == '::1' || this.ip == '::ffff:127.0.0.1') { this.ip = '127.0.0.1'; } } _setPeerId(request) { if (request.peerId) { this.id = request.peerId; } else { this.id = request.headers.cookie.replace('peerid=', ''); } } toString() { return `` } _setName(req) { let ua = parser(req.headers['user-agent']); let deviceName = ''; if (ua.os && ua.os.name) { deviceName = ua.os.name.replace('Mac OS', 'Mac') + ' '; } if (ua.device.model) { deviceName += ua.device.model; } else { deviceName += ua.browser.name; } if(!deviceName) deviceName = 'Unknown Device'; const displayName = uniqueNamesGenerator({ length: 2, separator: ' ', dictionaries: [colors, animals], style: 'capital', seed: this.id.hashCode() }) this.name = { model: ua.device.model, os: ua.os.name, browser: ua.browser.name, type: ua.device.type, deviceName, displayName }; } getInfo() { return { id: this.id, name: this.name, rtcSupported: this.rtcSupported } } // return uuid of form xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx static uuid() { let uuid = '', ii; for (ii = 0; ii < 32; ii += 1) { switch (ii) { case 8: case 20: uuid += '-'; uuid += (Math.random() * 16 | 0).toString(16); break; case 12: uuid += '-'; uuid += '4'; break; case 16: uuid += '-'; uuid += (Math.random() * 4 | 8).toString(16); break; default: uuid += (Math.random() * 16 | 0).toString(16); } } return uuid; }; } Object.defineProperty(String.prototype, 'hashCode', { value: function() { var hash = 0, i, chr; for (i = 0; i < this.length; i++) { chr = this.charCodeAt(i); hash = ((hash << 5) - hash) + chr; hash |= 0; // Convert to 32bit integer } return hash; } }); const server = new SnapdropServer(process.env.PORT || 3000); ================================================ FILE: server/package.json ================================================ { "name": "snapdrop", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "author": "", "license": "ISC", "dependencies": { "ua-parser-js": "^0.7.24", "unique-names-generator": "^4.3.0", "ws": "^7.4.6" } }