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<pre><a name="line-1"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Yesod</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Session</span>
<a name="line-2"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>encodeSession</span>
<a name="line-3"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>decodeSession</span>
<a name="line-4"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-5"></a>
<a name="line-6"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Web</span><span class='hs-varop'>.</span><span class='hs-conid'>ClientSession</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>CS</span>
<a name="line-7"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Serialize</span>
<a name="line-8"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Time</span>
<a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span>
<a name="line-10"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span><span class='hs-varid'>guard</span><span class='hs-layout'>)</span>
<a name="line-11"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-layout'>(</span><span class='hs-conid'>Text</span><span class='hs-layout'>,</span> <span class='hs-varid'>pack</span><span class='hs-layout'>,</span> <span class='hs-varid'>unpack</span><span class='hs-layout'>)</span>
<a name="line-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Arrow</span> <span class='hs-layout'>(</span><span class='hs-varid'>first</span><span class='hs-layout'>)</span>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'><$></span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-14"></a>
<a name="line-15"></a><a name="encodeSession"></a><span class='hs-definition'>encodeSession</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CS</span><span class='hs-varop'>.</span><span class='hs-conid'>Key</span>
<a name="line-16"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CS</span><span class='hs-varop'>.</span><span class='hs-conid'>IV</span>
<a name="line-17"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>UTCTime</span> <span class='hs-comment'>-- ^ expire time</span>
<a name="line-18"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-comment'>-- ^ remote host</span>
<a name="line-19"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Text</span><span class='hs-layout'>,</span> <span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ session</span>
<a name="line-20"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-comment'>-- ^ cookie value</span>
<a name="line-21"></a><span class='hs-definition'>encodeSession</span> <span class='hs-varid'>key</span> <span class='hs-varid'>iv</span> <span class='hs-varid'>expire</span> <span class='hs-varid'>rhost</span> <span class='hs-varid'>session'</span> <span class='hs-keyglyph'>=</span>
<a name="line-22"></a> <span class='hs-conid'>CS</span><span class='hs-varop'>.</span><span class='hs-varid'>encrypt</span> <span class='hs-varid'>key</span> <span class='hs-varid'>iv</span> <span class='hs-varop'>$</span> <span class='hs-varid'>encode</span> <span class='hs-varop'>$</span> <span class='hs-conid'>SessionCookie</span> <span class='hs-varid'>expire</span> <span class='hs-varid'>rhost</span> <span class='hs-varid'>session'</span>
<a name="line-23"></a>
<a name="line-24"></a><a name="decodeSession"></a><span class='hs-definition'>decodeSession</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CS</span><span class='hs-varop'>.</span><span class='hs-conid'>Key</span>
<a name="line-25"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>UTCTime</span> <span class='hs-comment'>-- ^ current time</span>
<a name="line-26"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-comment'>-- ^ remote host field</span>
<a name="line-27"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-comment'>-- ^ cookie value</span>
<a name="line-28"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Text</span><span class='hs-layout'>,</span> <span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-29"></a><span class='hs-definition'>decodeSession</span> <span class='hs-varid'>key</span> <span class='hs-varid'>now</span> <span class='hs-varid'>rhost</span> <span class='hs-varid'>encrypted</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-30"></a> <span class='hs-varid'>decrypted</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>CS</span><span class='hs-varop'>.</span><span class='hs-varid'>decrypt</span> <span class='hs-varid'>key</span> <span class='hs-varid'>encrypted</span>
<a name="line-31"></a> <span class='hs-conid'>SessionCookie</span> <span class='hs-varid'>expire</span> <span class='hs-varid'>rhost'</span> <span class='hs-varid'>session'</span> <span class='hs-keyglyph'><-</span>
<a name="line-32"></a> <span class='hs-varid'>either</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>decode</span> <span class='hs-varid'>decrypted</span>
<a name="line-33"></a> <span class='hs-varid'>guard</span> <span class='hs-varop'>$</span> <span class='hs-varid'>expire</span> <span class='hs-varop'>></span> <span class='hs-varid'>now</span>
<a name="line-34"></a> <span class='hs-varid'>guard</span> <span class='hs-varop'>$</span> <span class='hs-varid'>rhost'</span> <span class='hs-varop'>==</span> <span class='hs-varid'>rhost</span>
<a name="line-35"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>session'</span>
<a name="line-36"></a>
<a name="line-37"></a><a name="SessionCookie"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SessionCookie</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SessionCookie</span> <span class='hs-conid'>UTCTime</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Text</span><span class='hs-layout'>,</span> <span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-38"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span><span class='hs-layout'>)</span>
<a name="line-39"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Serialize</span> <span class='hs-conid'>SessionCookie</span> <span class='hs-keyword'>where</span>
<a name="line-40"></a> <span class='hs-varid'>put</span> <span class='hs-layout'>(</span><span class='hs-conid'>SessionCookie</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>putTime</span> <span class='hs-varid'>a</span> <span class='hs-varop'>>></span> <span class='hs-varid'>put</span> <span class='hs-varid'>b</span> <span class='hs-varop'>>></span> <span class='hs-varid'>put</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>first</span> <span class='hs-varid'>unpack</span><span class='hs-layout'>)</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-41"></a> <span class='hs-varid'>get</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-42"></a> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getTime</span>
<a name="line-43"></a> <span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-44"></a> <span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>first</span> <span class='hs-varid'>pack</span><span class='hs-layout'>)</span> <span class='hs-varop'><$></span> <span class='hs-varid'>get</span>
<a name="line-45"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>SessionCookie</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span>
<a name="line-46"></a>
<a name="line-47"></a><a name="putTime"></a><span class='hs-definition'>putTime</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Putter</span> <span class='hs-conid'>UTCTime</span>
<a name="line-48"></a><span class='hs-definition'>putTime</span> <span class='hs-varid'>t</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>UTCTime</span> <span class='hs-varid'>d</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-49"></a> <span class='hs-varid'>put</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toModifiedJulianDay</span> <span class='hs-varid'>d</span>
<a name="line-50"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ndt</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>diffUTCTime</span> <span class='hs-varid'>t</span> <span class='hs-varop'>$</span> <span class='hs-conid'>UTCTime</span> <span class='hs-varid'>d</span> <span class='hs-num'>0</span>
<a name="line-51"></a> <span class='hs-varid'>put</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toRational</span> <span class='hs-varid'>ndt</span>
<a name="line-52"></a>
<a name="line-53"></a><a name="getTime"></a><span class='hs-definition'>getTime</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Get</span> <span class='hs-conid'>UTCTime</span>
<a name="line-54"></a><span class='hs-definition'>getTime</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-55"></a> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-56"></a> <span class='hs-varid'>ndt</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-57"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromRational</span> <span class='hs-varid'>ndt</span> <span class='hs-varop'>`addUTCTime`</span> <span class='hs-conid'>UTCTime</span> <span class='hs-layout'>(</span><span class='hs-conid'>ModifiedJulianDay</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span>
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