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<?php |
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namespace XoopsModules\Extgallery; |
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/***************************************************************/ |
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/* PhpCaptcha - A visual and audio CAPTCHA generation library |
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Software License Agreement (BSD License) |
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Copyright (C) 2005-2006, Edward Eliot. |
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All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions are met: |
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* Redistributions of source code must retain the above copyright |
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notice, this list of conditions and the following disclaimer. |
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* Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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* Neither the name of Edward Eliot nor the names of its contributors |
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may be used to endorse or promote products derived from this software |
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without specific prior written permission of Edward Eliot. |
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS IS" AND ANY |
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY |
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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Last Updated: 18th April 2006 */ |
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/***************************************************************/ |
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/************************ Documentation ************************/ |
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/* |
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Documentation is available at http://www.ejeliot.com/pages/2 |
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*/ |
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// this class will only work correctly if a visual CAPTCHA has been created first using PhpCaptcha |
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/** |
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* Class AudioPhpCaptcha |
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*/ |
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class AudioPhpCaptcha |
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{ |
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public $sFlitePath; |
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public $sAudioPath; |
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public $sCode; |
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/** |
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* AudioPhpCaptcha constructor. |
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* @param string $sFlitePath |
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* @param string $sAudioPath |
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*/ |
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public function __construct( |
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$sFlitePath = CAPTCHA_FLITE_PATH, // path to flite binary |
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$sAudioPath = CAPTCHA_AUDIO_PATH // the location to temporarily store the generated audio CAPTCHA |
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) |
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{ |
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$this->SetFlitePath($sFlitePath); |
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$this->SetAudioPath($sAudioPath); |
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// retrieve code if already set by previous instance of visual PhpCaptcha |
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if (isset($_SESSION[CAPTCHA_SESSION_ID])) { |
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$this->sCode = $_SESSION[CAPTCHA_SESSION_ID]; |
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} |
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} |
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/** |
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* @param $sFlitePath |
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*/ |
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public function SetFlitePath($sFlitePath) |
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{ |
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$this->sFlitePath = $sFlitePath; |
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} |
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/** |
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* @param $sAudioPath |
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*/ |
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public function SetAudioPath($sAudioPath) |
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{ |
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$this->sAudioPath = $sAudioPath; |
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} |
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/** |
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* @param $sText |
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* |
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* @return string |
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*/ |
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public function Mask($sText) |
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{ |
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$iLength = mb_strlen($sText); |
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// loop through characters in code and format |
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$sFormattedText = ''; |
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foreach ($sText as $i => $iValue) { |
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// comma separate all but first and last characters |
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if ($i > 0 && $i < $iLength - 1) { |
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$sFormattedText .= ', '; |
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} elseif ($i == $iLength - 1) { |
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// precede last character with "and" |
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$sFormattedText .= ' and '; |
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} |
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$sFormattedText .= $sText[$i]; |
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} |
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$aPhrases = [ |
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'The %1$s characters are as follows: %2$s', |
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'%2$s, are the %1$s letters', |
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'Here are the %1$s characters: %2$s', |
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'%1$s characters are: %2$s', |
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'%1$s letters: %2$s', |
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]; |
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$iPhrase = \array_rand($aPhrases); |
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return \sprintf($aPhrases[$iPhrase], $iLength, $sFormattedText); |
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} |
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public function Create() |
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{ |
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$sText = $this->Mask($this->sCode); |
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$sFile = \md5($this->sCode . \time()); |
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// create file with flite |
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\shell_exec("$this->sFlitePath -t \"$sText\" -o $this->sAudioPath$sFile.wav"); |
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// set headers |
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\header('Content-type: audio/x-wav'); |
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\header("Content-Disposition: attachment;filename=$sFile.wav"); |
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// output to browser |
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echo file_get_contents("$this->sAudioPath$sFile.wav"); |
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// delete temporary file |
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@\unlink("$this->sAudioPath$sFile.wav"); |
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} |
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} |
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mambax7 /
extgallery
If you suppress an error, we recommend checking for the error condition explicitly: