From c6ce58b302950c743bbbcbc38da4ecf33721f82b Mon Sep 17 00:00:00 2001
From: "Nicolas \"Pixel\" Noble" <pixel@nobis-crew.org>
Date: Sun, 22 Dec 2013 12:48:47 -0800
Subject: Actually supporting client/server enforcements, as well as ping.

---
 includes/BWebSocket.h |  8 +++++---
 src/BWebSocket.cc     | 35 ++++++++++++++++++++---------------
 2 files changed, 25 insertions(+), 18 deletions(-)

diff --git a/includes/BWebSocket.h b/includes/BWebSocket.h
index 49f8cd1..cf25684 100644
--- a/includes/BWebSocket.h
+++ b/includes/BWebSocket.h
@@ -30,17 +30,19 @@ class WebSocketWorker : public StacklessTask {
   public:
     virtual bool parse(Http::Request & req) { return true; }
     void sendFrame(WebSocketFrame * frame) { m_sendQueue.push(frame); }
+    void enforceServer(void) throw (GeneralException);
+    void enforceClient(void) throw (GeneralException);
   protected:
       WebSocketWorker(IO<Handle> socket, const String & url) : m_socket(new BStream(socket)) { m_name = String("WebSocket:") + url + ":" + m_socket->getName(); }
       ~WebSocketWorker();
     void disconnect() { m_socket->close(); }
     virtual void receiveMessage(const uint8_t * msg, size_t len, bool binary) = 0;
-  private:
+    virtual void Do();
+private:
     void processMessage();
     void processPing();
     void processPong();
-    const char * getName() const { return m_name.to_charp(); }
-    void Do();
+    virtual const char * getName() const { return m_name.to_charp(); }
     String m_name;
     IO<BStream> m_socket;
     enum {
diff --git a/src/BWebSocket.cc b/src/BWebSocket.cc
index 3e81e7d..013f1e0 100644
--- a/src/BWebSocket.cc
+++ b/src/BWebSocket.cc
@@ -121,10 +121,8 @@ void Balau::WebSocketWorker::Do() {
                 m_socket->read(&c, 1);
                 if (m_socket->isClosed()) return;
                 m_hasMask = c & 0x80;
-                if (m_enforceServer && !m_hasMask)
-                    goto error;
-                if (m_enforceClient && m_hasMask)
-                    goto error;
+                if (m_enforceServer && !m_hasMask) goto error;
+                if (m_enforceClient && m_hasMask) goto error;
                 m_payloadLen = c & 0x7f;
                 m_state = READ_PLL;
                 if (m_payloadLen == 126) {
@@ -167,8 +165,7 @@ void Balau::WebSocketWorker::Do() {
                 while (m_remainingBytes) {
                     int r = m_socket->read(m_payload + m_totalLen - m_remainingBytes, m_remainingBytes);
                     if (m_socket->isClosed()) return;
-                    if (r < 0)
-                        goto error;
+                    if (r < 0) goto error;
                     m_remainingBytes -= r;
                 }
 
@@ -216,13 +213,25 @@ void Balau::WebSocketWorker::processMessage() {
 }
 
 void Balau::WebSocketWorker::processPing() {
-
+    sendFrame(new WebSocketFrame(m_payload, m_payloadLen, OPCODE_PING, m_enforceClient));
 }
 
 void Balau::WebSocketWorker::processPong() {
 
 }
 
+void Balau::WebSocketWorker::enforceClient() throw (GeneralException) {
+    if (m_enforceClient || m_enforceServer)
+        throw GeneralException("Can't set client or server mode more than once");
+    m_enforceClient = true;
+}
+
+void Balau::WebSocketWorker::enforceServer() throw (GeneralException) {
+    if (m_enforceClient || m_enforceServer)
+        throw GeneralException("Can't set client or server mode more than once");
+    m_enforceServer = true;
+}
+
 void Balau::WebSocketServerBase::sendError(IO<Handle> out, const char * serverName) {
     const char * status = Http::getStatusMsg(400);
     String errorMsg;
@@ -242,18 +251,14 @@ static const Balau::String magic = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
 bool Balau::WebSocketServerBase::Do(HttpServer * server, Http::Request & req, HttpServer::Action::ActionMatch & match, IO<Handle> out) throw (GeneralException) {
     WebSocketWorker * worker = NULL;
 
-    if (!req.upgrade)
-        goto error;
+    if (!req.upgrade) goto error;
 
-    if (req.headers["Upgrade"] != "websocket")
-        goto error;
+    if (req.headers["Upgrade"] != "websocket") goto error;
 
-    if (req.headers["Sec-WebSocket-Key"] == "")
-        goto error;
+    if (req.headers["Sec-WebSocket-Key"] == "") goto error;
 
     worker = spawnWorker(out, req.uri);
-    if (!worker->parse(req))
-        goto error;
+    if (!worker->parse(req)) goto error;
 
     TaskMan::registerTask(worker);
     {
-- 
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