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|
<html>
<head>
<title>FlashPolicyFileServer</title>
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<table id="source"><tbody><tr><td><h1>FlashPolicyFileServer</h1></td><td></td></tr><tr class="filename"><td><h2 id="lib/server.js"><a href="#">server</a></h2></td><td>lib/server.js</td></tr><tr class="code">
<td class="docs">
<p>Module dependencies and cached references.
</p>
</td>
<td class="code">
<pre><code><span class="keyword">var</span> <span class="variable">slice</span> = <span class="class">Array</span>.<span class="variable">prototype</span>.<span class="variable">slice</span>
, <span class="variable">net</span> = <span class="variable">require</span>(<span class="string">'net'</span>);</code></pre>
</td>
</tr>
<tr class="code">
<td class="docs">
<p>The server that does the Policy File severing</p>
<h2>Options</h2>
<ul><li><code>log</code> false or a function that can output log information, defaults to console.log?</li></ul>
<h2></h2>
<ul><li><p><strong>param</strong>: <em>Object</em> options Options to customize the servers functionality.</p></li><li><p><strong>param</strong>: <em>Array</em> origins The origins that are allowed on this server, defaults to <code>*:*</code>.</p></li><li><p><strong>api</strong>: <em>public</em></p></li></ul>
</td>
<td class="code">
<pre><code><span class="keyword">function</span> <span class="class">Server</span>(<span class="variable">options</span>, <span class="variable">origins</span>){
<span class="keyword">var</span> <span class="variable">me</span> = <span class="this">this</span>;
<span class="this">this</span>.<span class="variable">origins</span> = <span class="variable">origins</span> || [<span class="string">'*:*'</span>];
<span class="this">this</span>.<span class="variable">port</span> = <span class="number integer">843</span>;
<span class="this">this</span>.<span class="variable">log</span> = <span class="variable">console</span>.<span class="variable">log</span>;
<span class="comment">// merge `this` with the options</span>
<span class="class">Object</span>.<span class="variable">keys</span>(<span class="variable">options</span>).<span class="variable">forEach</span>(<span class="keyword">function</span>(<span class="variable">key</span>){
<span class="variable">me</span>[<span class="variable">key</span>] &<span class="variable">amp</span>;&<span class="variable">amp</span>; (<span class="variable">me</span>[<span class="variable">key</span>] = <span class="variable">options</span>[<span class="variable">key</span>])
});
<span class="comment">// create the net server</span>
<span class="this">this</span>.<span class="variable">socket</span> = <span class="variable">net</span>.<span class="variable">createServer</span>(<span class="keyword">function</span> <span class="variable">createServer</span>(<span class="variable">socket</span>){
<span class="variable">socket</span>.<span class="variable">on</span>(<span class="string">'error'</span>, <span class="keyword">function</span> <span class="variable">socketError</span>(){ <span class="variable">me</span>.<span class="variable">responder</span>.<span class="variable">call</span>(<span class="variable">me</span>, <span class="variable">socket</span>) });
<span class="variable">me</span>.<span class="variable">responder</span>.<span class="variable">call</span>(<span class="variable">me</span>, <span class="variable">socket</span>);
});
<span class="comment">// Listen for errors as the port might be blocked because we do not have root priv.</span>
<span class="this">this</span>.<span class="variable">socket</span>.<span class="variable">on</span>(<span class="string">'error'</span>, <span class="keyword">function</span> <span class="variable">serverError</span>(<span class="variable">err</span>){
<span class="comment">// Special and common case error handling</span>
<span class="keyword">if</span> (<span class="variable">err</span>.<span class="variable">errno</span> == <span class="number integer">13</span>){
<span class="variable">me</span>.<span class="variable">log</span> &<span class="variable">amp</span>;&<span class="variable">amp</span>; <span class="variable">me</span>.<span class="variable">log</span>(
<span class="string">'Unable to listen to port `'</span> + <span class="variable">me</span>.<span class="variable">port</span> + <span class="string">'` as your Node.js instance does not have root privileges. '</span> +
(
<span class="variable">me</span>.<span class="variable">server</span>
? <span class="string">'The Flash Policy file will now be served inline over the supplied HTTP server, Flash Policy files request will suffer.'</span>
: <span class="string">'No fallback server supplied.'</span>
)
);
<span class="variable">me</span>.<span class="variable">socket</span>.<span class="variable">removeAllListeners</span>();
<span class="keyword">delete</span> <span class="variable">me</span>.<span class="variable">socket</span>;
<span class="variable">me</span>.<span class="variable">emit</span>(<span class="string">'connect_failed'</span>, <span class="variable">err</span>);
} <span class="keyword">else</span> {
<span class="variable">me</span>.<span class="variable">log</span> &<span class="variable">amp</span>;&<span class="variable">amp</span>; <span class="variable">me</span>.<span class="variable">log</span>(<span class="string">'FlashPolicyFileServer received a error event:\n'</span> + (<span class="variable">err</span>.<span class="variable">message</span> ? <span class="variable">err</span>.<span class="variable">message</span> : <span class="variable">err</span>));
}
});
<span class="this">this</span>.<span class="variable">socket</span>.<span class="variable">on</span>(<span class="string">'timeout'</span>, <span class="keyword">function</span> <span class="variable">serverTimeout</span>(){});
<span class="this">this</span>.<span class="variable">socket</span>.<span class="variable">on</span>(<span class="string">'close'</span>, <span class="keyword">function</span> <span class="variable">serverClosed</span>(<span class="variable">err</span>){
<span class="variable">err</span> &<span class="variable">amp</span>;&<span class="variable">amp</span>; <span class="variable">me</span>.<span class="variable">log</span> &<span class="variable">amp</span>;&<span class="variable">amp</span>; <span class="variable">me</span>.<span class="variable">log</span>(<span class="string">'Server closing due to an error: \n'</span> + (<span class="variable">err</span>.<span class="variable">message</span> ? <span class="variable">err</span>.<span class="variable">message</span> : <span class="variable">err</span>));
<span class="keyword">if</span> (<span class="variable">me</span>.<span class="variable">server</span>){
<span class="comment">// not online anymore</span>
<span class="keyword">delete</span> <span class="variable">me</span>.<span class="variable">server</span>.<span class="variable">online</span>;
<span class="comment">// Remove the inline policy listener if we close down</span>
<span class="comment">// but only when the server was `online` (see listen prototype)</span>
<span class="keyword">if</span>( <span class="variable">me</span>.<span class="variable">server</span>[<span class="string">'@'</span>] &<span class="variable">amp</span>;&<span class="variable">amp</span>; <span class="variable">me</span>.<span class="variable">server</span>.<span class="variable">online</span>){
<span class="variable">me</span>.<span class="variable">server</span>.<span class="variable">removeListener</span>(<span class="string">'connection'</span>, <span class="variable">me</span>.<span class="variable">server</span>[<span class="string">'@'</span>]);
}
}
<span class="variable">me</span>.<span class="variable">log</span> &<span class="variable">amp</span>;&<span class="variable">amp</span>; <span class="variable">me</span>.<span class="variable">log</span>(<span class="string">'Shutting down FlashPolicyFileServer'</span>);
});
<span class="comment">// Compile the initial `buffer`</span>
<span class="this">this</span>.<span class="variable">compile</span>();
}</code></pre>
</td>
</tr>
<tr class="code">
<td class="docs">
<p>Start listening for requests</p>
<h2></h2>
<ul><li><p><strong>param</strong>: <em>Number</em> port The port number it should be listening to.</p></li><li><p><strong>param</strong>: <em>Server</em> server A HTTP server instance, this will be used to listen for inline requests</p></li><li><p><strong>param</strong>: <em>Function</em> cb The callback needs to be called once server is ready</p></li><li><p><strong>api</strong>: <em>public</em></p></li></ul>
</td>
<td class="code">
<pre><code><span class="class">Server</span>.<span class="variable">prototype</span>.<span class="variable">listen</span> = <span class="keyword">function</span> <span class="variable">listen</span>(<span class="variable">port</span>, <span class="variable">server</span>, <span class="variable">cb</span>){
<span class="keyword">var</span> <span class="variable">me</span> = <span class="this">this</span>
, <span class="variable">args</span> = <span class="variable">slice</span>.<span class="variable">call</span>(<span class="variable">arguments</span>, <span class="number integer">0</span>)
, <span class="variable">callback</span>;
<span class="comment">// assign the correct vars, for flexible arguments</span>
<span class="variable">args</span>.<span class="variable">forEach</span>(<span class="keyword">function</span> <span class="variable">args</span>(<span class="variable">arg</span>){
<span class="keyword">var</span> <span class="variable">type</span> = <span class="keyword">typeof</span> <span class="variable">arg</span>;
<span class="keyword">if</span> (<span class="variable">type</span> === <span class="string">'number'</span>) <span class="variable">me</span>.<span class="variable">port</span> = <span class="variable">arg</span>;
<span class="keyword">if</span> (<span class="variable">type</span> === <span class="string">'function'</span>) <span class="variable">callback</span> = <span class="variable">arg</span>;
<span class="keyword">if</span> (<span class="variable">type</span> === <span class="string">'object'</span>) <span class="variable">me</span>.<span class="variable">server</span> = <span class="variable">arg</span>;
});
<span class="keyword">if</span> (<span class="this">this</span>.<span class="variable">server</span>){
<span class="comment">// no one in their right mind would ever create a `@` prototype, so Im just gonna store</span>
<span class="comment">// my function on the server, so I can remove it later again once the server(s) closes</span>
<span class="this">this</span>.<span class="variable">server</span>[<span class="string">'@'</span>] = <span class="keyword">function</span> <span class="variable">connection</span>(<span class="variable">socket</span>){
<span class="variable">socket</span>.<span class="variable">once</span>(<span class="string">'data'</span>, <span class="keyword">function</span> <span class="variable">requestData</span>(<span class="variable">data</span>){
<span class="comment">// if it's a Flash policy request, and we can write to the </span>
<span class="keyword">if</span> (
<span class="variable">data</span>
&<span class="variable">amp</span>;&<span class="variable">amp</span>; <span class="variable">data</span>[<span class="number integer">0</span>] === <span class="number integer">60</span>
&<span class="variable">amp</span>;&<span class="variable">amp</span>; <span class="variable">data</span>.<span class="variable">toString</span>() === <span class="string">'<policy-file-request/>\0'</span>
&<span class="variable">amp</span>;&<span class="variable">amp</span>; <span class="variable">socket</span>
&<span class="variable">amp</span>;&<span class="variable">amp</span>; (<span class="variable">socket</span>.<span class="variable">readyState</span> === <span class="string">'open'</span> || <span class="variable">socket</span>.<span class="variable">readyState</span> === <span class="string">'writeOnly'</span>)
){
<span class="comment">// send the buffer</span>
<span class="variable">socket</span>.<span class="variable">end</span>(<span class="variable">me</span>.<span class="variable">buffer</span>);
}
});
};
<span class="comment">// attach it</span>
<span class="this">this</span>.<span class="variable">server</span>.<span class="variable">on</span>(<span class="string">'connection'</span>, <span class="this">this</span>.<span class="variable">server</span>[<span class="string">'@'</span>]);
}
<span class="comment">// We add a callback method, so we can set a flag for when the server is `enabled` or `online`.</span>
<span class="comment">// this flag is needed because if a error occurs and the we cannot boot up the server the</span>
<span class="comment">// fallback functionality should not be removed during the `close` event</span>
<span class="this">this</span>.<span class="variable">socket</span>.<span class="variable">listen</span>(<span class="this">this</span>.<span class="variable">port</span>, <span class="keyword">function</span> <span class="variable">serverListening</span>(){
<span class="variable">me</span>.<span class="variable">socket</span>.<span class="variable">online</span> = <span class="variable">true</span>;
<span class="keyword">if</span> (<span class="variable">callback</span>) <span class="variable">callback</span>(), <span class="variable">callback</span> = <span class="variable">undefined</span>;
});
<span class="keyword">return</span> <span class="this">this</span>;
};</code></pre>
</td>
</tr>
<tr class="code">
<td class="docs">
<p>Adds a new origin to the Flash Policy File.</p>
<h2></h2>
<ul><li><p><strong>param</strong>: <em>Arguments</em> The origins that need to be added.</p></li><li><p><strong>api</strong>: <em>public</em></p></li></ul>
</td>
<td class="code">
<pre><code><span class="class">Server</span>.<span class="variable">prototype</span>.<span class="variable">add</span> = <span class="keyword">function</span> <span class="variable">add</span>(){
<span class="keyword">var</span> <span class="variable">args</span> = <span class="variable">slice</span>.<span class="variable">call</span>(<span class="variable">arguments</span>, <span class="number integer">0</span>)
, <span class="variable">i</span> = <span class="variable">args</span>.<span class="variable">length</span>;
<span class="comment">// flag duplicates</span>
<span class="keyword">while</span> (<span class="variable">i</span>--){
<span class="keyword">if</span> (<span class="this">this</span>.<span class="variable">origins</span>.<span class="variable">indexOf</span>(<span class="variable">args</span>[<span class="variable">i</span>]) &<span class="variable">gt</span>;= <span class="number integer">0</span>){
<span class="variable">args</span>[<span class="variable">i</span>] = <span class="keyword">null</span>;
}
}
<span class="comment">// Add all the arguments to the array</span>
<span class="comment">// but first we want to remove all `falsy` values from the args</span>
<span class="class">Array</span>.<span class="variable">prototype</span>.<span class="variable">push</span>.<span class="variable">apply</span>(
<span class="this">this</span>.<span class="variable">origins</span>
, <span class="variable">args</span>.<span class="variable">filter</span>(<span class="keyword">function</span>(<span class="variable">value</span>){ <span class="keyword">return</span> !!<span class="variable">value</span> })
);
<span class="this">this</span>.<span class="variable">compile</span>();
<span class="keyword">return</span> <span class="this">this</span>;
};</code></pre>
</td>
</tr>
<tr class="code">
<td class="docs">
<p>Removes a origin from the Flash Policy File.</p>
<h2></h2>
<ul><li><p><strong>param</strong>: <em>String</em> origin The origin that needs to be removed from the server</p></li><li><p><strong>api</strong>: <em>public</em></p></li></ul>
</td>
<td class="code">
<pre><code><span class="class">Server</span>.<span class="variable">prototype</span>.<span class="variable">remove</span> = <span class="keyword">function</span> <span class="variable">remove</span>(<span class="variable">origin</span>){
<span class="keyword">var</span> <span class="variable">position</span> = <span class="this">this</span>.<span class="variable">origins</span>.<span class="variable">indexOf</span>(<span class="variable">origin</span>);
<span class="comment">// only remove and recompile if we have a match</span>
<span class="keyword">if</span> (<span class="variable">position</span> &<span class="variable">gt</span>; <span class="number integer">0</span>){
<span class="this">this</span>.<span class="variable">origins</span>.<span class="variable">splice</span>(<span class="variable">position</span>,<span class="number integer">1</span>);
<span class="this">this</span>.<span class="variable">compile</span>();
}
<span class="keyword">return</span> <span class="this">this</span>;
};</code></pre>
</td>
</tr>
<tr class="code">
<td class="docs">
<p>Closes and cleans up the server</p>
<ul><li><p><strong>api</strong>: <em>public</em></p></li></ul>
</td>
<td class="code">
<pre><code><span class="class">Server</span>.<span class="variable">prototype</span>.<span class="variable">close</span> = <span class="keyword">function</span> <span class="variable">close</span>(){
<span class="this">this</span>.<span class="variable">socket</span>.<span class="variable">removeAllListeners</span>();
<span class="this">this</span>.<span class="variable">socket</span>.<span class="variable">close</span>();
<span class="keyword">return</span> <span class="this">this</span>;
};</code></pre>
</td>
</tr>
<tr class="code">
<td class="docs">
<p>Proxy the event listener requests to the created Net server
</p>
</td>
<td class="code">
<pre><code><span class="class">Object</span>.<span class="variable">keys</span>(<span class="variable">process</span>.<span class="class">EventEmitter</span>.<span class="variable">prototype</span>).<span class="variable">forEach</span>(<span class="keyword">function</span> <span class="variable">proxy</span>(<span class="variable">key</span>){
<span class="class">Server</span>.<span class="variable">prototype</span>[<span class="variable">key</span>] = <span class="class">Server</span>.<span class="variable">prototype</span>[<span class="variable">key</span>] || <span class="keyword">function</span> (){
<span class="keyword">if</span> (<span class="this">this</span>.<span class="variable">socket</span>) <span class="this">this</span>.<span class="variable">socket</span>[<span class="variable">key</span>].<span class="variable">apply</span>(<span class="this">this</span>.<span class="variable">socket</span>, <span class="variable">arguments</span>);
<span class="keyword">return</span> <span class="this">this</span>;
};
});</code></pre>
</td>
</tr>
<tr class="code">
<td class="docs">
<p>Creates a new server instance.</p>
<h2></h2>
<ul><li><p><strong>param</strong>: <em>Object</em> options A options object to override the default config</p></li><li><p><strong>param</strong>: <em>Array</em> origins The origins that should be allowed by the server</p></li><li><p><strong>api</strong>: <em>public</em></p></li></ul>
</td>
<td class="code">
<pre><code><span class="variable">exports</span>.<span class="variable">createServer</span> = <span class="keyword">function</span> <span class="variable">createServer</span>(<span class="variable">options</span>, <span class="variable">origins</span>){
<span class="variable">origins</span> = <span class="class">Array</span>.<span class="variable">isArray</span>(<span class="variable">origins</span>) ? <span class="variable">origins</span> : (<span class="class">Array</span>.<span class="variable">isArray</span>(<span class="variable">options</span>) ? <span class="variable">options</span> : <span class="variable">false</span>);
<span class="variable">options</span> = !<span class="class">Array</span>.<span class="variable">isArray</span>(<span class="variable">options</span>) &<span class="variable">amp</span>;&<span class="variable">amp</span>; <span class="variable">options</span> ? <span class="variable">options</span> : {};
<span class="keyword">return</span> <span class="keyword">new</span> <span class="class">Server</span>(<span class="variable">options</span>, <span class="variable">origins</span>);
};</code></pre>
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<td class="docs">
<p>Provide a hook to the original server, so it can be extended if needed.
</p>
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<td class="code">
<pre><code><span class="variable">exports</span>.<span class="class">Server</span> = <span class="class">Server</span>;</code></pre>
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<td class="docs">
<p>Module version
</p>
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<pre><code><span class="variable">exports</span>.<span class="variable">version</span> = <span class="string">'0.0.2'</span>;
</code></pre>
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