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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE OverloadedStrings #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-3"></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'>Request</span>
<a name="line-4"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>parseWaiRequest</span>
<a name="line-5"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Request</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-6"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>RequestBodyContents</span>
<a name="line-7"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>FileInfo</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-8"></a> <span class='hs-comment'>-- The below are exported for testing.</span>
<a name="line-9"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>randomString</span>
<a name="line-10"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>parseWaiRequest'</span>
<a name="line-11"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-12"></a>
<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><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'>second</span><span class='hs-layout'>)</span>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Wai</span><span class='hs-varop'>.</span><span class='hs-conid'>Parse</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>NWP</span>
<a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Yesod</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Wai</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>W</span>
<a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Random</span> <span class='hs-layout'>(</span><span class='hs-conid'>RandomGen</span><span class='hs-layout'>,</span> <span class='hs-varid'>newStdGen</span><span class='hs-layout'>,</span> <span class='hs-varid'>randomRs</span><span class='hs-layout'>)</span>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Web</span><span class='hs-varop'>.</span><span class='hs-conid'>Cookie</span> <span class='hs-layout'>(</span><span class='hs-varid'>parseCookiesText</span><span class='hs-layout'>)</span>
<a name="line-20"></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-21"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Char8</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>S8</span>
<a name="line-22"></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>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>HTTP</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-varid'>queryToQueryText</span><span class='hs-layout'>)</span>
<a name="line-24"></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'>join</span><span class='hs-layout'>)</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromMaybe</span><span class='hs-layout'>,</span> <span class='hs-varid'>catMaybes</span><span class='hs-layout'>)</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>L</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Set</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Set</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>T</span>
<a name="line-29"></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-varop'>.</span><span class='hs-conid'>Encoding</span> <span class='hs-layout'>(</span><span class='hs-varid'>decodeUtf8With</span><span class='hs-layout'>)</span>
<a name="line-30"></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-varop'>.</span><span class='hs-conid'>Encoding</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</span> <span class='hs-layout'>(</span><span class='hs-varid'>lenientDecode</span><span class='hs-layout'>)</span>
<a name="line-31"></a>
<a name="line-32"></a><a name="Request"></a><span class='hs-comment'>-- | The parsed request information.</span>
<a name="line-33"></a><a name="Request"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Request</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Request</span>
<a name="line-34"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>reqGetParams</span> <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'>Text</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-35"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>reqCookies</span> <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'>Text</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-36"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>reqWaiRequest</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Request</span>
<a name="line-37"></a> <span class='hs-comment'>-- | Languages which the client supports.</span>
<a name="line-38"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>reqLangs</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Text</span><span class='hs-keyglyph'>]</span>
<a name="line-39"></a> <span class='hs-comment'>-- | A random, session-specific nonce used to prevent CSRF attacks.</span>
<a name="line-40"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>reqNonce</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Text</span>
<a name="line-41"></a> <span class='hs-layout'>}</span>
<a name="line-42"></a>
<a name="line-43"></a><a name="parseWaiRequest"></a><span class='hs-definition'>parseWaiRequest</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Request</span>
<a name="line-44"></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-45"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span>
<a name="line-46"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Request</span>
<a name="line-47"></a><span class='hs-definition'>parseWaiRequest</span> <span class='hs-varid'>env</span> <span class='hs-varid'>session'</span> <span class='hs-varid'>key'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>parseWaiRequest'</span> <span class='hs-varid'>env</span> <span class='hs-varid'>session'</span> <span class='hs-varid'>key'</span> <span class='hs-varop'><$></span> <span class='hs-varid'>newStdGen</span>
<a name="line-48"></a>
<a name="line-49"></a><a name="parseWaiRequest'"></a><span class='hs-definition'>parseWaiRequest'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RandomGen</span> <span class='hs-varid'>g</span>
<a name="line-50"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Request</span>
<a name="line-51"></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-52"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span>
<a name="line-53"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>g</span>
<a name="line-54"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Request</span>
<a name="line-55"></a><span class='hs-definition'>parseWaiRequest'</span> <span class='hs-varid'>env</span> <span class='hs-varid'>session'</span> <span class='hs-varid'>key'</span> <span class='hs-varid'>gen</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Request</span> <span class='hs-varid'>gets''</span> <span class='hs-varid'>cookies'</span> <span class='hs-varid'>env</span> <span class='hs-varid'>langs''</span> <span class='hs-varid'>nonce</span>
<a name="line-56"></a> <span class='hs-keyword'>where</span>
<a name="line-57"></a> <span class='hs-varid'>gets'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>queryToQueryText</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>queryString</span> <span class='hs-varid'>env</span>
<a name="line-58"></a> <span class='hs-varid'>gets''</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>second</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-str'>""</span><span class='hs-layout'>)</span> <span class='hs-varid'>gets'</span>
<a name="line-59"></a> <span class='hs-varid'>reqCookie</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lookup</span> <span class='hs-str'>"Cookie"</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>requestHeaders</span> <span class='hs-varid'>env</span>
<a name="line-60"></a> <span class='hs-varid'>cookies'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>parseCookiesText</span> <span class='hs-varid'>reqCookie</span>
<a name="line-61"></a> <span class='hs-varid'>acceptLang</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lookup</span> <span class='hs-str'>"Accept-Language"</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>requestHeaders</span> <span class='hs-varid'>env</span>
<a name="line-62"></a> <span class='hs-varid'>langs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>pack</span> <span class='hs-varop'>.</span> <span class='hs-conid'>S8</span><span class='hs-varop'>.</span><span class='hs-varid'>unpack</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>maybe</span> <span class='hs-conid'>[]</span> <span class='hs-conid'>NWP</span><span class='hs-varop'>.</span><span class='hs-varid'>parseHttpAccept</span> <span class='hs-varid'>acceptLang</span>
<a name="line-63"></a>
<a name="line-64"></a> <span class='hs-varid'>lookupText</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>decodeUtf8With</span> <span class='hs-varid'>lenientDecode</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>k</span>
<a name="line-65"></a>
<a name="line-66"></a> <span class='hs-comment'>-- The language preferences are prioritized as follows:</span>
<a name="line-67"></a> <span class='hs-varid'>langs'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>catMaybes</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>join</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>langKey</span> <span class='hs-varid'>gets'</span> <span class='hs-comment'>-- Query _LANG</span>
<a name="line-68"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>langKey</span> <span class='hs-varid'>cookies'</span> <span class='hs-comment'>-- Cookie _LANG</span>
<a name="line-69"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>lookupText</span> <span class='hs-varid'>langKey</span> <span class='hs-varid'>session'</span> <span class='hs-comment'>-- Session _LANG</span>
<a name="line-70"></a> <span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-varid'>langs</span> <span class='hs-comment'>-- Accept-Language(s)</span>
<a name="line-71"></a>
<a name="line-72"></a> <span class='hs-comment'>-- Github issue #195. We want to add an extra two-letter version of any</span>
<a name="line-73"></a> <span class='hs-comment'>-- language in the list.</span>
<a name="line-74"></a> <span class='hs-varid'>langs''</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>addTwoLetters</span> <span class='hs-layout'>(</span><span class='hs-varid'>id</span><span class='hs-layout'>,</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span><span class='hs-layout'>)</span> <span class='hs-varid'>langs'</span>
<a name="line-75"></a>
<a name="line-76"></a> <span class='hs-comment'>-- If sessions are disabled nonces should not be used (any</span>
<a name="line-77"></a> <span class='hs-comment'>-- nonceKey present in the session is ignored). If sessions</span>
<a name="line-78"></a> <span class='hs-comment'>-- are enabled and a session has no nonceKey a new one is</span>
<a name="line-79"></a> <span class='hs-comment'>-- generated.</span>
<a name="line-80"></a> <span class='hs-varid'>nonce</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>key'</span><span class='hs-layout'>,</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>nonceKey</span> <span class='hs-varid'>session'</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-81"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-82"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>decodeUtf8With</span> <span class='hs-varid'>lenientDecode</span> <span class='hs-varid'>x</span>
<a name="line-83"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>pack</span> <span class='hs-varop'>$</span> <span class='hs-varid'>randomString</span> <span class='hs-num'>10</span> <span class='hs-varid'>gen</span>
<a name="line-84"></a>
<a name="line-85"></a><a name="addTwoLetters"></a><span class='hs-definition'>addTwoLetters</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Text</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Text</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-conid'>Set</span> <span class='hs-conid'>Text</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Text</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Text</span><span class='hs-keyglyph'>]</span>
<a name="line-86"></a><span class='hs-definition'>addTwoLetters</span> <span class='hs-layout'>(</span><span class='hs-varid'>toAdd</span><span class='hs-layout'>,</span> <span class='hs-varid'>exist</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span>
<a name="line-87"></a> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>flip</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>notMember</span> <span class='hs-varid'>exist</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toAdd</span> <span class='hs-conid'>[]</span>
<a name="line-88"></a><span class='hs-definition'>addTwoLetters</span> <span class='hs-layout'>(</span><span class='hs-varid'>toAdd</span><span class='hs-layout'>,</span> <span class='hs-varid'>exist</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span><span class='hs-conop'>:</span><span class='hs-varid'>ls</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-89"></a> <span class='hs-varid'>l</span> <span class='hs-conop'>:</span> <span class='hs-varid'>addTwoLetters</span> <span class='hs-layout'>(</span><span class='hs-varid'>toAdd'</span><span class='hs-layout'>,</span> <span class='hs-varid'>exist'</span><span class='hs-layout'>)</span> <span class='hs-varid'>ls</span>
<a name="line-90"></a> <span class='hs-keyword'>where</span>
<a name="line-91"></a> <span class='hs-layout'>(</span><span class='hs-varid'>toAdd'</span><span class='hs-layout'>,</span> <span class='hs-varid'>exist'</span><span class='hs-layout'>)</span>
<a name="line-92"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>l</span> <span class='hs-varop'>></span> <span class='hs-num'>2</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>toAdd</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-num'>2</span> <span class='hs-varid'>l</span><span class='hs-conop'>:</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>exist</span><span class='hs-layout'>)</span>
<a name="line-93"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>toAdd</span><span class='hs-layout'>,</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>l</span> <span class='hs-varid'>exist</span><span class='hs-layout'>)</span>
<a name="line-94"></a>
<a name="line-95"></a><a name="randomString"></a><span class='hs-comment'>-- | Generate a random String of alphanumerical characters</span>
<a name="line-96"></a><span class='hs-comment'>-- (a-z, A-Z, and 0-9) of the given length using the given</span>
<a name="line-97"></a><span class='hs-comment'>-- random number generator.</span>
<a name="line-98"></a><span class='hs-definition'>randomString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RandomGen</span> <span class='hs-varid'>g</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>g</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-99"></a><span class='hs-definition'>randomString</span> <span class='hs-varid'>len</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>take</span> <span class='hs-varid'>len</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>toChar</span> <span class='hs-varop'>.</span> <span class='hs-varid'>randomRs</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>61</span><span class='hs-layout'>)</span>
<a name="line-100"></a> <span class='hs-keyword'>where</span>
<a name="line-101"></a> <span class='hs-varid'>toChar</span> <span class='hs-varid'>i</span>
<a name="line-102"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>i</span> <span class='hs-varop'><</span> <span class='hs-num'>26</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toEnum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>i</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fromEnum</span> <span class='hs-chr'>'A'</span>
<a name="line-103"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>i</span> <span class='hs-varop'><</span> <span class='hs-num'>52</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toEnum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>i</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fromEnum</span> <span class='hs-chr'>'a'</span> <span class='hs-comment'>-</span> <span class='hs-num'>26</span>
<a name="line-104"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toEnum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>i</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fromEnum</span> <span class='hs-chr'>'0'</span> <span class='hs-comment'>-</span> <span class='hs-num'>52</span>
<a name="line-105"></a>
<a name="line-106"></a><a name="RequestBodyContents"></a><span class='hs-comment'>-- | A tuple containing both the POST parameters and submitted files.</span>
<a name="line-107"></a><a name="RequestBodyContents"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>RequestBodyContents</span> <span class='hs-keyglyph'>=</span>
<a name="line-108"></a> <span class='hs-layout'>(</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'>Text</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-109"></a> <span class='hs-layout'>,</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'>FileInfo</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-110"></a> <span class='hs-layout'>)</span>
<a name="line-111"></a>
<a name="line-112"></a><a name="FileInfo"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>FileInfo</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FileInfo</span>
<a name="line-113"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>fileName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Text</span>
<a name="line-114"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>fileContentType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Text</span>
<a name="line-115"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>fileContent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>L</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-116"></a> <span class='hs-layout'>}</span>
<a name="line-117"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
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